/* ==========================================================================
   Components: Cards, Buttons, Modals, Stories Ring, Toasts & Micro-UI
   ========================================================================== */

/* ==========================================================================
   Card — Standardized Component System
   Variants: .card (base), .card-hover, .card-glass, .card-interactive
   ========================================================================== */

.card {
    background-color: var(--surface-1);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--elevation-1);
    transition: box-shadow var(--motion-normal), border-color var(--motion-fast), transform var(--motion-fast);
}

.card-hover:hover {
    box-shadow: var(--elevation-2);
    transform: translateY(-2px);
}

.card-glass {
    background: var(--surface-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-default);
}

.card-interactive {
    cursor: pointer;
}

.card-interactive:focus-visible {
    box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
    outline: var(--focus-ring-offset) solid transparent;
}

/* Post Card (specific card variant) */
.post-card {
    background-color: var(--surface-1);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--elevation-1);
    transition: box-shadow var(--motion-normal), border-color var(--motion-fast),
                transform var(--motion-fast);
}

.post-card:hover {
    box-shadow: var(--elevation-2);
}

.post-card:active {
    transform: scale(0.99);
}

.post-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
}

.post-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ==========================================================================
   Avatar — Standardized Component System
   Sizes: xxs(24) sm(32) md(40) lg(48) xl(88) 2xl(110)
   States: normal, :hover, :focus-visible, .avatar-group
   ========================================================================== */

.avatar-container {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    background-color: var(--surface-3);
    border: 1.5px solid var(--border-subtle-2);
    transition: transform var(--motion-fast);
    flex-shrink: 0;
}

a.avatar,
button.avatar {
    cursor: pointer;
}

a.avatar:hover,
button.avatar:hover {
    transform: scale(1.04);
}

a.avatar:focus-visible,
button.avatar:focus-visible {
    box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
    outline: var(--focus-ring-offset) solid transparent;
}

/* Size variants */
.avatar-xxs { width: 24px; height: 24px; }
.avatar-sm { width: 32px; height: 32px; }
.avatar-md { width: 48px; height: 48px; }
.avatar-lg { width: 88px; height: 88px; }
.avatar-xl { width: 110px; height: 110px; }

/* Avatar Group (stacked) */
.avatar-group {
    display: flex;
    align-items: center;
}

.avatar-group .avatar {
    border: 2px solid var(--surface-1);
}

.avatar-group .avatar + .avatar {
    margin-left: -10px;
}

/* ==========================================================================
   Story Rings — Standardized
   ========================================================================== */

.story-ring-active {
    padding: 2.5px;
    background: var(--gradient-story);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform var(--motion-fast);
}

.story-ring-active:hover {
    transform: scale(1.05);
}

.story-ring-active:focus-visible {
    box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
}

.story-ring-active .avatar {
    border: 2px solid var(--surface-1);
}

/* ==========================================================================
   Badges — Standardized Component System
   Variants: .badge, .badge-dot, .badge-pill, .badge-verified
   ========================================================================== */

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 11px;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: var(--radius-pill);
    background: var(--color-primary);
    color: #FFF;
    line-height: 1;
}

.badge-sm {
    font-size: 10px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
}

.badge-success { background: var(--color-success); }
.badge-warning { background: var(--color-warning); color: #000; }
.badge-info { background: var(--color-info); }
.badge-accent { background: var(--color-accent); }

/* Dot indicator */
.badge-dot {
    width: 10px;
    height: 10px;
    min-width: 10px;
    padding: 0;
    border-radius: 50%;
    background: var(--color-success);
}

.badge-dot-danger { background: var(--color-primary); }
.badge-dot-warning { background: var(--color-warning); }

/* Verified checkmark */
.badge-verified {
    color: #38BDF8;
    font-size: 13px;
    display: inline-flex;
    align-items: center;
}

/* Online indicator (positioned absolute by parent) */
.online-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--success);
    border: 2px solid var(--surface-1);
    position: absolute;
    bottom: 0;
    right: 0;
}

/* Pill badge (nav counters, notification counters) */
.badge-pill {
    position: absolute;
    background: var(--gradient-primary);
    color: #FFF;
    font-size: 11px;
    font-weight: 800;
    min-width: 20px;
    height: 20px;
    border-radius: var(--radius-pill);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
    box-shadow: 0 2px 8px var(--color-primary-glow, rgba(255, 45, 85, 0.4));
    animation: popBadge 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Legacy nav-badge → keep for backward compatibility */
.nav-badge {
    position: absolute;
    right: 14px;
    background: var(--gradient-primary);
    color: #FFF;
    font-size: 11px;
    font-weight: 800;
    min-width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
    box-shadow: 0 2px 8px rgba(255, 45, 85, 0.4);
    animation: popBadge 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* @keyframes popBadge — moved to motion.css */

.post-user-info .username {
    font-weight: 700;
    font-size: 14px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 5px;
}

.post-user-info .time {
    font-size: 12px;
    color: var(--text-muted);
}

/* Post Media Display */
.post-media-container {
    position: relative;
    width: 100%;
    background: #000;
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
}

.post-media-container img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.post-media-container video {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Adaptive video container (supports 9:16 Shorts, 4:5 portrait, 16:9 landscape) */
.post-media-container.post-media-video {
    aspect-ratio: var(--media-ratio, 9 / 16);
    max-height: min(76vh, 660px);
    min-height: 260px;
    background: #070707;
}

.post-media-container.post-media-video video {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    max-height: min(76vh, 660px);
    object-fit: contain;
    background: transparent;
    transition: object-fit 0.25s ease;
}

.post-media-container.post-media-video.fit-cover video {
    object-fit: cover;
}

/* Ambient video background blur effect */
.post-media-container .video-blur-backdrop {
    position: absolute;
    inset: -24px;
    background-size: cover;
    background-position: center;
    filter: blur(28px) brightness(0.42);
    transform: scale(1.15);
    pointer-events: none;
    z-index: 1;
    opacity: 0.85;
    transition: opacity 0.3s ease;
}

/* Fit / Fill toggle button on top-right of video */
.video-fit-toggle {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #FFF;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--radius-full, 9999px);
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    cursor: pointer;
    z-index: 10;
    transition: all 0.2s ease;
}

.video-fit-toggle:hover {
    background: rgba(0, 0, 0, 0.85);
    border-color: rgba(255, 255, 255, 0.35);
    transform: scale(1.08);
}

.video-fit-toggle:active {
    transform: scale(0.95);
}

.post-card:hover .post-media-container img {
    transform: scale(1.015);
}

/* Double-Tap Heart Burst Particle Animations */
.heart-burst-overlay {
    position: absolute;
    font-size: 90px;
    color: #FFF;
    filter: drop-shadow(0 8px 24px rgba(255, 45, 85, 0.7));
    pointer-events: none;
    display: none;
    z-index: 15;
}

.heart-burst-overlay.animate {
    display: block;
    animation: heartBurst 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

/* Post Actions Bar */
.post-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px 8px 18px;
}

.action-buttons-left {
    display: flex;
    align-items: center;
    gap: 18px;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 22px;
    color: var(--text-main);
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.action-btn:hover {
    transform: scale(1.15);
}

.action-btn:active {
    transform: scale(0.9);
}

.action-btn.liked {
    color: var(--like);
}

.action-btn.liked i {
    animation: bounceScale 0.45s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.action-btn.saved {
    color: var(--primary);
}

.action-btn span {
    font-size: 14px;
    font-weight: 700;
}

/* Post Caption & Hashtags */
.post-content {
    padding: 0 18px 14px 18px;
    font-size: 14px;
    line-height: 1.5;
}

.post-caption .username {
    font-weight: 700;
    margin-right: 6px;
    color: var(--text-main);
}

.post-hashtag {
    color: var(--primary);
    font-weight: 600;
    transition: opacity var(--transition-fast);
}

.post-hashtag:hover {
    text-decoration: underline;
    opacity: 0.85;
}

.view-comments-btn {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-top: 6px;
    display: inline-block;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.view-comments-btn:hover {
    color: var(--primary);
}

/* Quick Inline Comment Input */
.post-quick-comment-box {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-surface);
}

.quick-comment-input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 13px;
    color: var(--text-main);
    outline: none;
}

.quick-comment-input::placeholder {
    color: var(--text-subtle);
}

.quick-comment-submit {
    color: var(--primary);
    font-weight: 700;
    font-size: 13px;
    opacity: 0.7;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.quick-comment-submit:hover {
    opacity: 1;
    transform: scale(1.05);
}

.quick-emoji-pills {
    display: flex;
    gap: 6px;
}

.emoji-pill {
    cursor: pointer;
    font-size: 16px;
    transition: transform var(--transition-fast);
}

.emoji-pill:hover {
    transform: scale(1.3);
}

/* ==========================================================================
   Buttons — Standardized Component System
   States: normal, :hover, :active, :focus-visible, :disabled, .loading
   ========================================================================== */

/* --- Base Button --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 18px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 14px;
    letter-spacing: -0.2px;
    cursor: pointer;
    transition: all var(--motion-fast);
    border: 1px solid transparent;
    text-decoration: none;
    user-select: none;
    outline: none;
    position: relative;
    overflow: hidden;
}

.btn:focus-visible {
    box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
    outline: var(--focus-ring-offset) solid transparent;
}

.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    pointer-events: none;
    cursor: not-allowed;
}

/* --- Size Variants --- */
.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 12px 24px;
    font-size: 15px;
    border-radius: var(--radius-lg);
}

.btn-pill {
    border-radius: var(--radius-pill);
}

/* --- Primary (Gradient) --- */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-on-gradient);
    box-shadow: 0 4px 14px var(--color-primary-glow, rgba(255, 45, 85, 0.35));
}

.btn-primary:hover {
    background: var(--gradient-primary-hover);
    box-shadow: 0 6px 20px var(--color-primary-glow, rgba(255, 45, 85, 0.5));
    transform: translateY(-1.5px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:focus-visible {
    box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color),
                0 4px 14px var(--color-primary-glow, rgba(255, 45, 85, 0.35));
}

/* --- Secondary --- */
.btn-secondary {
    background-color: var(--surface-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.btn-secondary:hover {
    background-color: var(--surface-active);
    border-color: var(--text-secondary);
}

.btn-secondary:active {
    background-color: var(--border-default);
}

/* --- Glass --- */
.btn-glass {
    background: var(--surface-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.btn-glass:hover {
    background: var(--surface-hover);
    box-shadow: var(--elevation-1);
}

/* --- Ghost (text-only) --- */
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}

.btn-ghost:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

/* --- Danger --- */
.btn-danger {
    background: var(--color-primary);
    color: var(--text-on-color);
}

.btn-danger:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 14px var(--color-primary-glow, rgba(255, 45, 85, 0.35));
}

/* --- AI Sparkle Button --- */
.btn-ai {
    background: linear-gradient(135deg, #6366F1 0%, #A855F7 50%, #EC4899 100%);
    color: #FFF;
    border: none;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 2px 10px rgba(168, 85, 247, 0.4);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--motion-fast);
    cursor: pointer;
}

.btn-ai:hover {
    box-shadow: 0 4px 16px rgba(168, 85, 247, 0.6);
    transform: scale(1.04);
}

.btn-ai:focus-visible {
    box-shadow: 0 0 0 var(--focus-ring-width) rgba(168, 85, 247, 0.5),
                0 4px 16px rgba(168, 85, 247, 0.6);
}

/* --- Block (full-width) --- */
.btn-block {
    width: 100%;
}

/* --- Loading State --- */
.btn.loading {
    pointer-events: none;
    color: transparent !important;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    color: #FFF;
}

/* ==========================================================================
   Icon Buttons — Standardized
   ========================================================================== */

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--motion-fast);
    text-decoration: none;
    outline: none;
}

.icon-btn:hover {
    background-color: var(--surface-hover);
    color: var(--text-primary);
}

.icon-btn:focus-visible {
    box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
}

.icon-btn:active {
    transform: scale(0.92);
    background-color: var(--surface-active);
}

/* Size variants */
.icon-btn-sm {
    width: 30px;
    height: 30px;
    font-size: 14px;
}

.icon-btn-lg {
    width: 44px;
    height: 44px;
    font-size: 20px;
}

/* Accent variant */
.icon-btn-primary {
    color: var(--color-primary);
}

.icon-btn-primary:hover {
    background: var(--primary-light);
    color: var(--color-primary);
}

/* Glass variant */
.icon-btn-glass {
    background: var(--surface-glass);
    border: 1px solid var(--border-default);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.icon-btn-glass:hover {
    background: var(--surface-hover);
    box-shadow: var(--elevation-1);
}

/* Legacy alias — keep for backward compatibility */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: var(--text-muted);
    transition: all var(--transition-fast);
    background: transparent;
    border: none;
    cursor: pointer;
    text-decoration: none;
    outline: none;
}

.btn-icon:hover {
    background-color: var(--bg-surface-hover);
    color: var(--text-main);
}

.btn-icon:focus-visible {
    box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
}

/* ==========================================================================
   Form Inputs, Textarea & Select — Standardized Component System
   States: normal, :hover, :focus, :disabled, .input-error, .input-success
   ========================================================================== */

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 18px;
}

.form-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}

/* Base input */
.form-input {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--border-default);
    background-color: var(--surface-3);
    color: var(--text-primary);
    outline: none;
    font-size: 14px;
    font-family: inherit;
    transition: border-color var(--motion-fast), background-color var(--motion-fast), box-shadow var(--motion-fast);
}

.form-input:hover {
    border-color: var(--border-strong);
}

.form-input:focus {
    border-color: var(--color-primary);
    background-color: var(--bg-input-focus);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.form-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: var(--surface-hover);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

/* Size variants */
.input-sm {
    padding: 8px 12px;
    font-size: 13px;
    border-radius: var(--radius-sm);
}

.input-lg {
    padding: 14px 20px;
    font-size: 15px;
    border-radius: var(--radius-lg);
}

/* State variants */
.input-error {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.input-success {
    border-color: var(--color-success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

/* Icon-leading input */
.input-icon-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon-wrapper .input-icon {
    position: absolute;
    left: 14px;
    color: var(--text-secondary);
    font-size: 16px;
    pointer-events: none;
}

.input-icon-wrapper .form-input {
    padding-left: 42px;
}

/* ==========================================================================
   Textarea — Standardized
   ========================================================================== */

.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--border-default);
    background-color: var(--surface-3);
    color: var(--text-primary);
    outline: none;
    font-size: 14px;
    font-family: inherit;
    line-height: 1.5;
    resize: vertical;
    min-height: 80px;
    transition: border-color var(--motion-fast), background-color var(--motion-fast), box-shadow var(--motion-fast);
}

.form-textarea:focus {
    border-color: var(--color-primary);
    background-color: var(--bg-input-focus);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.form-textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: var(--surface-hover);
}

.form-textarea::placeholder {
    color: var(--text-tertiary);
}

/* ==========================================================================
   Drag & Drop Zone
   ========================================================================== */

.upload-dropzone {
    border: 2px dashed var(--border-default);
    border-radius: var(--radius-lg);
    padding: 32px 20px;
    text-align: center;
    background: var(--surface-hover);
    cursor: pointer;
    transition: all var(--motion-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.upload-dropzone:hover,
.upload-dropzone.dragover {
    border-color: var(--color-primary);
    background: var(--primary-light);
    transform: scale(1.01);
}

.upload-dropzone i {
    font-size: 40px;
    color: var(--color-primary);
}

/* Upload Preview Gallery */
.upload-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 10px;
    margin-top: 14px;
}

.upload-preview-item {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.upload-preview-item img,
.upload-preview-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.upload-preview-item .remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    color: #FFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.upload-preview-item .remove-btn:hover {
    transform: scale(1.2);
    background: var(--primary);
}

/* ==========================================================================
   Modals — Standardized Component System
   Variants: .modal-sm, .modal-lg, .modal-confirm
   ========================================================================== */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.68);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal-backdrop, 1040);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--motion-normal);
}

.modal-backdrop.show {
    opacity: 1;
    visibility: visible;
}

.modal-dialog {
    background-color: var(--surface-1);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    width: 92%;
    max-width: 540px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--elevation-3);
    display: flex;
    flex-direction: column;
    transform: scale(0.92) translateY(20px);
    transition: all var(--motion-slow);
}

.modal-backdrop.show .modal-dialog {
    transform: scale(1) translateY(0);
}

/* Size variants */
.modal-sm {
    max-width: 400px;
}

.modal-lg {
    max-width: 680px;
}

/* Confirm dialog variant */
.modal-confirm .modal-dialog {
    max-width: 420px;
    text-align: center;
}

.modal-confirm .modal-body {
    padding: 32px 24px 20px;
}

.modal-confirm .modal-body .confirm-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.modal-confirm .modal-body .confirm-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.modal-confirm .modal-body .confirm-message {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.modal-confirm .modal-footer {
    justify-content: center;
    gap: 12px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-default);
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-default);
}

/* ==========================================================================
   Toasts — Standardized Component System
   ========================================================================== */

#toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: var(--z-toast, 1060);
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
}

#toast-container > * {
    pointer-events: auto;
}

.toast {
    background-color: var(--surface-1);
    border: 1px solid var(--border-default);
    border-left: 5px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    box-shadow: var(--elevation-3);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    animation: slideUpFade 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    min-width: 280px;
    max-width: 400px;
}

.toast.toast-success { border-left-color: var(--color-success); }
.toast.toast-error   { border-left-color: var(--color-primary); }
.toast.toast-info    { border-left-color: var(--color-secondary); }
.toast.toast-warning { border-left-color: var(--color-warning); }

/* ==========================================================================
   Tabs — Standardized Component System
   Variants: .tab-nav-underline (default), .tab-nav-pill
   ========================================================================== */

.tab-nav-container {
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-default);
    margin-bottom: 24px;
    gap: 32px;
    justify-content: center;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}

.tab-nav-container::-webkit-scrollbar {
    display: none;
}

.tab-nav-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 4px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--motion-fast);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: inherit;
}

.tab-nav-item:hover {
    color: var(--text-primary);
}

.tab-nav-item.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-nav-item:focus-visible {
    box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
    border-radius: var(--radius-xs);
}

/* Pill variant */
.tab-nav-pill {
    gap: 8px;
    border-bottom: none;
}

.tab-nav-pill .tab-nav-item {
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-default);
    background: var(--surface-1);
    border-bottom: 1px solid var(--border-default);
}

.tab-nav-pill .tab-nav-item:hover {
    background: var(--surface-hover);
}

.tab-nav-pill .tab-nav-item.active {
    background: var(--color-primary);
    color: #FFF;
    border-color: var(--color-primary);
}

/* ==========================================================================
   Tooltip — Pure CSS (data-tooltip attribute)
   ========================================================================== */

[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) scale(0.8);
    background: var(--text-primary);
    color: var(--surface-1);
    font-size: 12px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--motion-fast), transform var(--motion-fast);
    z-index: var(--z-tooltip, 1070);
}

[data-tooltip]:hover::after,
[data-tooltip]:focus-visible::after {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

/* Tooltip position variants */
[data-tooltip-pos="bottom"]::after {
    bottom: auto;
    top: calc(100% + 8px);
}

[data-tooltip-pos="left"]::after {
    bottom: auto;
    top: 50%;
    left: auto;
    right: calc(100% + 8px);
    transform: translateY(-50%) scale(0.8);
}

[data-tooltip-pos="left"]:hover::after,
[data-tooltip-pos="left"]:focus-visible::after {
    transform: translateY(-50%) scale(1);
}

[data-tooltip-pos="right"]::after {
    bottom: auto;
    top: 50%;
    left: calc(100% + 8px);
    transform: translateY(-50%) scale(0.8);
}

[data-tooltip-pos="right"]:hover::after,
[data-tooltip-pos="right"]:focus-visible::after {
    transform: translateY(-50%) scale(1);
}

/* ==========================================================================
   Dropdown — Standardized Component System
   ========================================================================== */

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--surface-1);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-3);
    padding: 8px;
    z-index: var(--z-dropdown, 1000);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--motion-fast), transform var(--motion-fast), visibility var(--motion-fast);
}

.dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: background var(--motion-fast);
    text-decoration: none;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
}

.dropdown-item:hover {
    background: var(--surface-hover);
}

.dropdown-item:focus-visible {
    box-shadow: inset 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
    outline: none;
}

.dropdown-item.danger {
    color: var(--color-primary);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-default);
    margin: 6px 0;
}

/* ==========================================================================
   Interactive Realtime Social Notification Toast
   ========================================================================== */

.toast-close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px;
    font-size: 16px;
    display: flex;
    align-items: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.toast-close-btn:hover {
    color: var(--text-main);
    background: var(--bg-surface-hover);
}

.interactive-notification-toast {
    position: relative;
    width: 360px;
    max-width: calc(100vw - 32px);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.16), 0 2px 8px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    cursor: pointer;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    animation: toastSlideInRight 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.interactive-notification-toast:hover {
    transform: translateY(-3px) scale(1.01);
    box-shadow: 0 16px 44px rgba(0, 0, 0, 0.22);
    border-color: rgba(255, 45, 85, 0.3);
}

.notif-toast-inner {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 40px 14px 14px;
}

.notif-toast-avatar-wrapper {
    position: relative;
    flex-shrink: 0;
}

.notif-toast-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-subtle);
}

.notif-type-icon {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    color: #FFF;
    border: 2px solid var(--bg-surface);
}

.notif-type-icon.like { background: linear-gradient(135deg, #FF2D55, #FF5E7E); }
.notif-type-icon.comment { background: linear-gradient(135deg, #007AFF, #5856D6); }
.notif-type-icon.follow { background: linear-gradient(135deg, #34C759, #30D158); }
.notif-type-icon.mention { background: linear-gradient(135deg, #AF52DE, #BF5AF2); }
.notif-type-icon.message { background: linear-gradient(135deg, #00C7BE, #32ADE6); }

.notif-toast-content {
    flex: 1;
    min-width: 0;
    font-size: 13.5px;
    line-height: 1.35;
}

.notif-toast-text {
    color: var(--text-main);
    word-break: break-word;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.notif-actor-name {
    font-weight: 800;
    color: var(--text-main);
}

.notif-toast-snippet {
    font-size: 12.5px;
    color: var(--text-muted);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.notif-toast-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11.5px;
    color: var(--text-muted);
    margin-top: 4px;
}

.notif-action-hint {
    color: var(--primary);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.notif-toast-thumb {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--border-color);
}

.notif-toast-close {
    position: absolute;
    top: 8px;
    right: 8px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 16px;
    cursor: pointer;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.notif-toast-close:hover {
    background: var(--bg-surface-hover);
    color: var(--text-main);
}

.notif-progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    width: 100%;
    background: var(--gradient-primary);
    animation: toastProgress 5.5s linear forwards;
    transform-origin: left;
}

/* @keyframes toastProgress, toastSlideInRight — moved to motion.css */

/* ==========================================================================
   Global Desktop Top Header Nav
   ========================================================================== */

.app-top-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky, 1020);
    height: 64px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    margin: -28px -24px 24px -24px;
    transition: background-color var(--transition-normal);
}

.header-search-box {
    position: relative;
    width: 380px;
    max-width: 100%;
}

.header-search-input {
    width: 100%;
    padding: 9px 16px 9px 40px;
    border-radius: var(--radius-full);
    border: 1.5px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-main);
    font-size: 13.5px;
    outline: none;
    transition: all var(--transition-fast);
}

.header-search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
    background: var(--bg-surface);
    width: 440px;
}

.header-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
    pointer-events: none;
}

.header-search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: 200;
    display: none;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
}

.header-actions-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-btn-create {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    color: #FFF;
    font-size: 13.5px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(255, 45, 85, 0.35);
    transition: all var(--transition-fast);
}

.header-btn-create:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(255, 45, 85, 0.45);
}

.header-icon-btn {
    position: relative;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.header-icon-btn:hover {
    background: var(--bg-surface-hover);
    color: var(--primary);
    transform: scale(1.05);
}

.header-icon-badge {
    position: absolute;
    top: -3px;
    right: -3px;
    background: var(--primary);
    color: #FFF;
    font-size: 10px;
    font-weight: 900;
    min-width: 17px;
    height: 17px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    border: 2px solid var(--bg-surface);
}

.header-user-status-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 4px 14px 4px 4px;
    border-radius: var(--radius-full);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-main);
    transition: all var(--transition-fast);
}

.header-user-status-chip:hover {
    background: var(--bg-surface-hover);
    border-color: var(--border-subtle);
}

.online-pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--bg-surface);
}

/* ==========================================================================
   Skeleton, Empty State & Loading — Standardized Component System
   ========================================================================== */

/* --- Skeleton (placeholder shimmer) --- */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--surface-3) 25%,
        var(--surface-hover) 50%,
        var(--surface-3) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.6s infinite;
    border-radius: var(--radius-sm);
}

.skeleton-text {
    height: 14px;
    border-radius: var(--radius-pill);
    margin-bottom: 8px;
}

.skeleton-text:last-child {
    width: 60%;
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.skeleton-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-md);
}

.skeleton-card {
    width: 100%;
    padding: 16px;
    background: var(--surface-1);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-default);
}

.skeleton-card .skeleton-image {
    margin-top: 12px;
}

/* --- Empty State --- */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 48px 24px;
}

.empty-state-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #FFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 16px;
    box-shadow: 0 8px 24px var(--color-primary-glow, rgba(255, 45, 85, 0.4));
}

/* --- Visual Empty State Illustrations --- */
.empty-state-media {
    position: relative;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.empty-state-illustration {
    width: 220px;
    height: 220px;
    max-width: 75vw;
    object-fit: contain;
    display: block;
    filter: drop-shadow(0 14px 28px rgba(0, 0, 0, 0.16));
    transition: transform var(--motion-normal, 0.3s ease);
    animation: floatSubtle 4s ease-in-out infinite alternate;
}

.empty-state-illustration:hover {
    transform: scale(1.04) translateY(-4px);
}

@keyframes floatSubtle {
    0% { transform: translateY(0); }
    100% { transform: translateY(-8px); }
}

@media (max-width: 640px) {
    .empty-state-illustration {
        width: 170px;
        height: 170px;
    }
}

.empty-state-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.empty-state-description {
    color: var(--text-secondary);
    font-size: 14px;
    max-width: 360px;
    line-height: 1.5;
    margin-bottom: 20px;
}

.empty-state-action {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

/* --- Loading Spinner --- */
.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-default);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.spinner-lg { width: 36px; height: 36px; border-width: 4px; }

/* Loading overlay */
.loading-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-glass);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 10;
    border-radius: inherit;
}

/* Loading dots */
.loading-dots {
    display: inline-flex;
    gap: 6px;
    align-items: center;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
    animation: loadingDot 1.2s ease-in-out infinite;
}

.loading-dots span:nth-child(2) { animation-delay: 0.15s; }
.loading-dots span:nth-child(3) { animation-delay: 0.3s; }

/* @keyframes loadingDot — moved to motion.css */

/* Loading text (inline spinner + text) */
.loading-text {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
}

/* ==========================================================================
   Bottom Sheet — Standardized Component System
   ========================================================================== */

.bottom-sheet-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop, 1040);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--motion-normal);
}

.bottom-sheet-backdrop.show {
    opacity: 1;
    visibility: visible;
}

.bottom-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--z-modal, 1050);
    background: var(--surface-1);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    max-height: 88vh;
    max-height: 88dvh;
    overflow-y: auto;
    box-shadow: var(--elevation-3);
    transform: translateY(100%);
    transition: transform var(--motion-slow);
    padding-bottom: var(--safe-bottom, 0px);
}

.bottom-sheet.show {
    transform: translateY(0);
}

.bottom-sheet-handle {
    display: flex;
    justify-content: center;
    padding: 8px 0;
    position: sticky;
    top: 0;
    background: inherit;
    z-index: 1;
}

.bottom-sheet-handle::before {
    content: '';
    width: 36px;
    height: 4px;
    border-radius: var(--radius-pill);
    background: var(--border-default);
}

.bottom-sheet-header {
    padding: 8px 20px 16px;
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary);
    text-align: center;
}

.bottom-sheet-body {
    padding: 0 20px 20px;
}

/* ==========================================================================
   Mobile-First Components Optimization (< 768px)
   ========================================================================== */

@media (max-width: 767px) {
    /* Feed Wrapper Mobile Reset */
    .feed-wrapper {
        flex-direction: column;
        gap: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        padding: 0 !important;
        box-sizing: border-box !important;
    }

    /* Post Card Mobile Edge-to-Edge Comfort */
    .post-card {
        border-radius: var(--radius-md);
        border-left: 1px solid var(--border-color);
        border-right: 1px solid var(--border-color);
        box-shadow: var(--shadow-xs);
    }

    .post-header {
        padding: 11px 14px;
    }

    .post-actions {
        padding: 10px 14px 6px 14px;
    }

    .action-btn {
        font-size: 24px;
        min-width: 38px;
        min-height: 38px;
        justify-content: center;
    }

    .action-buttons-left {
        gap: 14px;
    }

    .post-content {
        padding: 0 14px 12px 14px;
        font-size: 13.5px;
    }

    .post-quick-comment-box {
        padding: 8px 14px;
    }

    .quick-comment-input {
        font-size: 14px; /* Prevents auto-zoom on iOS */
    }

    /* Video poster display on mobile */
    .post-media-container video {
        background-color: #0a0a0a;
    }

    .post-media-container video[poster] {
        background-image: var(--poster-url, none);
        background-size: cover;
        background-position: center;
    }

    /* Mobile Bottom Sheet Modals */
    .modal-backdrop {
        align-items: flex-end;
        padding: 0;
    }

    .modal-dialog {
        width: 100% !important;
        max-width: 100% !important;
        border-radius: var(--radius-2xl) var(--radius-2xl) 0 0 !important;
        max-height: 88vh !important;
        max-height: 88dvh !important;
        margin: 0;
        border-bottom: none !important;
        border-left: none !important;
        border-right: none !important;
        transform: translateY(100%);
        transition: transform var(--transition-spring);
        padding-bottom: max(var(--safe-bottom, 0px), 12px);
    }

    .modal-backdrop.show .modal-dialog {
        transform: translateY(0);
    }

    .modal-header {
        padding: 16px 20px 14px 20px;
        position: relative;
    }

    /* Modal Drag Handle for Sheet Feel */
    .modal-header::before {
        content: '';
        position: absolute;
        top: 6px;
        left: 50%;
        transform: translateX(-50%);
        width: 36px;
        height: 4px;
        border-radius: var(--radius-full);
        background: var(--border-color);
    }

    .modal-header h3 {
        font-size: 16px;
    }

    .modal-body {
        padding: 16px 20px;
    }

    .modal-footer {
        padding: 12px 20px;
    }

    /* Toasts on Mobile */
    #toast-container {
        top: calc(var(--mobile-header-height, 56px) + 8px);
        left: 14px;
        right: 14px;
        align-items: center;
    }

    .toast {
        min-width: unset;
        width: 100%;
        max-width: 100%;
        font-size: 13.5px;
        padding: 12px 16px;
    }

    .interactive-notification-toast {
        width: 100%;
        max-width: 100%;
    }

    /* Form Inputs on Mobile to prevent iOS auto-zoom */
    .form-input {
        font-size: 15px;
        padding: 11px 14px;
    }

    /* Dropzone on Mobile */
    .upload-dropzone {
        padding: 22px 14px;
        gap: 8px;
    }

    .upload-dropzone i {
        font-size: 32px;
    }

    /* Stories Bar Touch Styling */
    #stories-bar {
        padding: 10px 4px 12px 4px !important;
        gap: 12px !important;
        -webkit-overflow-scrolling: touch;
    }

    /* Mobile: AI Sparkle Button */
    .btn-ai {
        font-size: 11px;
        padding: 5px 10px;
    }

    /* Mobile: Better touch target for post author */
    .post-user {
        gap: 10px;
    }

    .post-user .avatar {
        width: 36px;
        height: 36px;
    }

    .post-user-info .username {
        font-size: 13px;
    }

    /* Mobile: Emoji pills larger for touch */
    .emoji-pill {
        font-size: 18px;
        padding: 2px;
    }

    .quick-emoji-pills {
        gap: 8px;
    }

    .quick-comment-submit {
        font-size: 14px;
        font-weight: 800;
    }

    /* Mobile: Upload preview grid denser */
    .upload-preview-grid {
        grid-template-columns: repeat(auto-fill, minmax(75px, 1fr));
        gap: 8px;
    }

    /* Mobile: bottom sheet drag handle */
    .modal-header {
        padding-top: 18px;
    }
}

/* =========================================================================
   Visual Vibrancy & Interactive Image Animations
   ========================================================================= */

/* 2. Floating Heart Double Tap Animation */
.floating-like-heart {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    font-size: 80px;
    color: #FF2D55;
    text-shadow: 0 0 25px rgba(255, 45, 85, 0.8), 0 0 50px rgba(255, 45, 85, 0.4);
    pointer-events: none;
    z-index: 50;
    animation: heartPop 0.85s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

/* @keyframes heartPop — moved to motion.css */

/* 3. Ambient Glow Effects on Visual Elements */
.ambient-glow-card {
    position: relative;
    transition: all var(--transition-normal);
}

.ambient-glow-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow: 0 10px 30px -5px rgba(var(--profile-accent-rgb, 255, 45, 85), 0.25);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
    z-index: -1;
}

.ambient-glow-card:hover::after {
    opacity: 1;
}

/* 4. Glowing Stories Ring Pulse */
.story-avatar-wrap {
    position: relative;
    padding: 3px;
    border-radius: 50%;
    background: var(--gradient-primary);
    background-size: 200% 200%;
    animation: gradientSpin 4s ease infinite;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 12px rgba(255, 45, 85, 0.35);
    transition: transform var(--transition-fast);
}

.story-avatar-wrap:hover {
    transform: scale(1.08);
}

/* @keyframes gradientSpin — moved to motion.css */

/* 5. Smooth Fade-in on Image Load */
img.lazy-fade-in {
    opacity: 0;
    transition: opacity 0.4s ease-in;
}

img.lazy-fade-in.loaded {
    opacity: 1;
}

/* ==========================================================================
   Utility Classes — Shared micro-layout helpers
   ========================================================================== */

/* Display */
.hidden { display: none !important; }
.block { display: block; }
.inline { display: inline; }
.inline-flex { display: inline-flex; }
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; min-width: 0; }
.flex-shrink-0 { flex-shrink: 0; }

/* Text */
.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-success) !important; }
.text-muted { color: var(--text-secondary) !important; }
.text-subtle { color: var(--text-tertiary) !important; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.text-bold { font-weight: 700; }
.text-800 { font-weight: 800; }
.text-sm { font-size: 13px; }
.text-xs { font-size: 12px; }
.text-lg { font-size: 15px; }
.text-mono { font-family: monospace; }

/* Position */
.pos-relative { position: relative; }
.pos-absolute { position: absolute; }

/* Width */
.w-full { width: 100%; }
.max-w-sm { max-width: 360px; }
.max-w-md { max-width: 560px; }

/* Spacing (margin) */
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }
.mx-auto { margin-left: auto; margin-right: auto; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }

/* Spacing (padding) */
.p-3 { padding: 16px; }
.p-4 { padding: 24px; }
.px-3 { padding-left: 16px; padding-right: 16px; }
.py-2 { padding-top: 8px; padding-bottom: 8px; }

/* ==========================================================================
   Template-Specific Component Classes
   ========================================================================== */

/* Feed wrapper */
.feed-wrapper {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    width: 100%;
    max-width: 1260px;
    gap: 32px;
    min-width: 0;
    box-sizing: border-box;
}

.feed-container {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 760px;
    min-width: 0;
    box-sizing: border-box;
}

/* Stories bar */
.stories-bar {
    display: flex;
    gap: 14px;
    overflow-x: auto;
    padding: 12px 2px;
    border-bottom: 1px solid var(--border-default);
    margin-bottom: 6px;
    align-items: center;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.stories-bar::-webkit-scrollbar {
    display: none;
}

.add-story-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    flex-shrink: 0;
}

.add-story-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px dashed var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-1);
    transition: transform var(--motion-fast);
}

.add-story-circle:hover {
    transform: scale(1.05);
}

.add-story-plus {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFF;
    box-shadow: 0 2px 8px var(--color-primary-glow, rgba(255, 45, 85, 0.4));
}

.story-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    flex-shrink: 0;
}

.story-group-label {
    font-size: 12px;
    font-weight: 600;
    max-width: 70px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-primary);
}

/* Feed posts */
.feed-posts {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

/* Skeleton post placeholder */
.skeleton-post {
    padding: 16px;
}

.skeleton-post-header {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 14px;
}

/* ==========================================================================
   Feed Enhancements (PART 6): scroll reveal, media overlays, infinite scroll,
   pull-to-refresh, image fade, press feedback
   ========================================================================== */

/* Scroll reveal */
.feed-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s var(--ease-emphasized),
                transform 0.5s var(--ease-emphasized);
}

.feed-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Infinite scroll sentinel */
.feed-sentinel {
    height: 1px;
    width: 100%;
    pointer-events: none;
}

.feed-loading-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
}

.feed-no-more {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
}

/* Media overlay indicators */
.media-overlay-icon {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    color: #FFF;
    font-size: 20px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 10;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.media-overlay-icon.hide-overlay {
    opacity: 0;
    visibility: hidden;
}

.media-count-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    color: #FFF;
    font-size: 12px;
    font-weight: 700;
    padding: 5px 10px;
    border-radius: var(--radius-full);
    pointer-events: none;
    z-index: 10;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Image lazy load fade-in */
img.feed-image-fade {
    opacity: 0;
    transition: opacity 0.4s ease;
}

img.feed-image-fade.loaded {
    opacity: 1;
}

/* Pull-to-refresh indicator */
.pull-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 0;
    height: 0;
    overflow: hidden;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
    transition: height 0.2s ease, padding 0.2s ease;
}

.pull-indicator.pulling {
    height: 48px;
    padding: 12px;
}

.pull-indicator.refreshing {
    height: 48px;
    padding: 12px;
    color: var(--primary);
}

/* User card (right panel) */
.user-card {
    display: flex;
    align-items: center;
    gap: 14px;
}

.user-card-info {
    flex: 1;
    min-width: 0;
}

.user-card-name {
    font-weight: 800;
    font-size: 15px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-card-sub {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Trending tags */
.trending-tags {
    display: flex;
    flex-wrap: wrap;
}

/* Footer info */
.footer-info {
    font-size: 12px;
    color: var(--text-tertiary);
    padding: 0 8px;
    line-height: 1.6;
}

/* Search result item */
.search-result-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 18px;
    border-bottom: 1px solid var(--border-subtle-2);
    transition: background var(--motion-fast);
    text-decoration: none;
    color: inherit;
}

.search-result-item:hover {
    background: var(--surface-hover);
}

.search-result-name {
    font-weight: 700;
    font-size: 14px;
    color: var(--text-primary);
}

.search-result-username {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Explore page layout */
.explore-layout {
    display: flex;
    justify-content: center;
    width: 100%;
    max-width: 1040px;
    gap: 32px;
    min-width: 0;
    box-sizing: border-box;
}

.explore-main {
    flex: 1;
    max-width: 660px;
    min-width: 0;
    width: 100%;
    box-sizing: border-box;
}

/* Notifications page layout */
.notifications-layout {
    display: flex;
    justify-content: center;
    width: 100%;
    max-width: 1040px;
    gap: 32px;
    min-width: 0;
    box-sizing: border-box;
}

.notifications-main {
    flex: 1;
    max-width: 660px;
    min-width: 0;
    width: 100%;
    box-sizing: border-box;
}

.notif-card {
    padding: 24px;
}

.notif-filter-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.notif-filter-bar::-webkit-scrollbar {
    display: none;
}

.explore-search-wrapper {
    margin-bottom: 20px;
    position: relative;
}

.explore-search-icon {
    position: absolute;
    left: 18px;
    top: 14px;
    color: var(--text-muted);
    font-size: 16px;
    pointer-events: none;
}

.explore-search-input {
    padding: 13px 20px 13px 48px !important;
    border-radius: var(--radius-full) !important;
    background: var(--bg-surface) !important;
    font-size: 14.5px !important;
    box-shadow: var(--shadow-sm) !important;
}

.explore-search-dropdown {
    display: none;
    position: absolute;
    top: 54px;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    max-height: 360px;
    overflow-y: auto;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

/* Notification item hover */
.notification-item {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    transition: all var(--motion-fast);
    cursor: pointer;
}

.notification-item:hover {
    transform: translateX(3px);
    background: var(--surface-hover);
}

/* Post detail back link */
.post-detail-back {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 14px;
    color: var(--text-secondary);
    width: fit-content;
    transition: color var(--motion-fast);
    text-decoration: none;
}

.post-detail-back:hover {
    color: var(--color-primary);
}

/* Icon size helpers */
.icon-lg { font-size: 19px; }
.icon-2x { font-size: 24px; }

/* ==========================================================================
   Page-Specific Components (migrated from inline <style> blocks)
   ========================================================================== */

/* --- Explore Page: Filter Chips & Grid --- */
.explore-filter-bar {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 16px;
    margin-bottom: 20px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.explore-filter-bar::-webkit-scrollbar {
    display: none;
}

.explore-chip {
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    background: var(--surface-1);
    border: 1px solid var(--border-default);
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--motion-fast);
}

.explore-chip:hover,
.explore-chip.active {
    background: var(--gradient-primary);
    color: #FFF;
    border-color: transparent;
    box-shadow: 0 4px 14px var(--color-primary-glow, rgba(255, 45, 85, 0.35));
    transform: translateY(-1px);
}

.explore-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.explore-item {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--surface-1);
    box-shadow: var(--elevation-1);
    cursor: pointer;
    border: 1px solid var(--border-default);
    transition: all var(--motion-normal);
}

.explore-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
}

.explore-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.explore-item:hover img {
    transform: scale(1.06);
}

.explore-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.75) 100%);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 12px;
    opacity: 0;
    transition: opacity var(--motion-fast);
    color: #FFF;
}

.explore-item:hover .explore-overlay {
    opacity: 1;
}

.explore-stats {
    display: flex;
    gap: 12px;
    font-size: 13px;
    font-weight: 700;
}

@media (max-width: 767px) {
    .explore-layout {
        flex-direction: column;
        gap: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        padding: 0 10px !important;
        box-sizing: border-box !important;
    }
    .explore-main {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
    }
    .notifications-layout {
        flex-direction: column;
        gap: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        padding: 0 10px !important;
        box-sizing: border-box !important;
    }
    .notifications-main {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
    }
    .notif-card {
        padding: 16px 12px !important;
        border-radius: var(--radius-lg) !important;
    }
    .explore-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 4px;
    }
    .explore-item {
        border-radius: var(--radius-xs);
        border: none;
    }
    .explore-filter-bar {
        gap: 8px;
        padding-bottom: 10px;
        margin-bottom: 14px;
        -webkit-overflow-scrolling: touch;
    }
    .explore-chip {
        padding: 6px 13px;
        font-size: 12.5px;
    }
    .explore-overlay {
        padding: 8px;
    }
    .explore-stats {
        gap: 8px;
        font-size: 11px;
    }
}

@media (max-width: 340px) {
    .explore-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 4px;
    }
    .explore-item {
        border-radius: var(--radius-sm);
    }
}

/* ==========================================================================
   Explore Enhancements (PART 9)
   ========================================================================== */

/* Video badge — pill with play icon + count */
.explore-video-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #FFF;
    font-size: 12px;
    font-weight: 700;
    z-index: 5;
    pointer-events: none;
}

.explore-video-badge i {
    font-size: 14px;
}

/* Overlay top row — hashtags */
.explore-overlay-top {
    display: flex;
    justify-content: flex-end;
    gap: 6px;
    flex-wrap: wrap;
}

.explore-hashtag {
    background: rgba(0, 0, 0, 0.55);
    padding: 3px 8px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    color: #FFF;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.explore-overlay-bottom-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 8px;
}

.explore-author-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 13px;
}

.explore-author-row .avatar {
    width: 26px;
    height: 26px;
    border: 1.5px solid #FFF;
}

/* Hover preview video layer */
.explore-preview-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    pointer-events: none;
    z-index: 2;
    transition: opacity 0.3s ease;
}

.explore-item:hover .explore-preview-video {
    opacity: 1;
}

.explore-item img {
    transition: transform 0.4s ease, opacity 0.3s ease;
}

/* Grid reveal animation */
.explore-item {
    animation: motionFadeIn 0.3s var(--ease-emphasized) both;
}

.explore-item.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Explore sentinel for infinite scroll */
.explore-sentinel {
    width: 100%;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

/* Search dropdown items */
.explore-search-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    text-decoration: none;
    color: var(--text-main);
    transition: background var(--motion-fast);
}

.explore-search-item:hover,
.explore-search-item.active {
    background: var(--surface-hover);
}

.explore-search-item.active {
    background: var(--color-primary-light, rgba(255, 45, 85, 0.08));
}

.explore-search-empty {
    padding: 20px;
    font-size: 13.5px;
    color: var(--text-muted);
    text-align: center;
}

/* Empty & error states */
.explore-grid-empty,
.explore-grid-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.explore-grid-error i {
    font-size: 36px;
    color: #F59E0B;
}

.explore-grid-error p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Chip press feedback */
.explore-chip:active {
    transform: scale(0.95);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .explore-item {
        animation: none;
    }
    .explore-item:hover .explore-preview-video {
        opacity: 0;
    }
    .explore-item:hover img {
        transform: none;
    }
}

/* Leaderboard Showcase */
.leaderboard-view {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
    animation: fadeInUp 0.4s ease forwards;
}
.leaderboard-hero {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.15), rgba(121, 80, 242, 0.15));
    border: 1px solid rgba(255, 107, 107, 0.25);
    border-radius: var(--radius-xl, 20px);
    padding: 24px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.leaderboard-hero h2 {
    font-size: 22px;
    font-weight: 800;
    margin: 0 0 6px 0;
    background: linear-gradient(135deg, #FF6B6B, #FA5252, #FF922B);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.leaderboard-hero p {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
}
.leaderboard-podium {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 8px;
}
@media (max-width: 640px) {
    .leaderboard-podium {
        grid-template-columns: 1fr;
    }
}
.podium-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg, 16px);
    padding: 20px 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease;
}
.podium-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.12);
}
.podium-card.rank-1 {
    border-color: rgba(255, 215, 0, 0.6);
    background: linear-gradient(180deg, rgba(255, 215, 0, 0.08), var(--bg-card));
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.15);
}
.podium-card.rank-2 {
    border-color: rgba(192, 192, 192, 0.5);
}
.podium-card.rank-3 {
    border-color: rgba(205, 127, 50, 0.5);
}
.podium-avatar-wrapper {
    position: relative;
    margin-bottom: 12px;
}
.podium-avatar-wrapper .avatar {
    width: 68px;
    height: 68px;
    border: 3px solid #FFD700;
}
.podium-card.rank-2 .avatar { border-color: #C0C0C0; }
.podium-card.rank-3 .avatar { border-color: #CD7F32; }
.podium-crown {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 24px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}
.podium-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
    text-decoration: none;
}
.podium-name:hover { color: var(--primary); }
.podium-username {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}
.podium-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 99px;
    background: rgba(255, 107, 107, 0.12);
    color: var(--primary);
    margin-bottom: 12px;
}
.podium-stats {
    display: flex;
    justify-content: center;
    gap: 12px;
    width: 100%;
    margin-bottom: 14px;
    font-size: 12px;
    color: var(--text-secondary);
}
.podium-stats span strong {
    color: var(--text-primary);
}
.leaderboard-table {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg, 16px);
    overflow: hidden;
}
.leaderboard-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s ease;
}
.leaderboard-row:last-child {
    border-bottom: none;
}
.leaderboard-row:hover {
    background: var(--bg-hover, rgba(0,0,0,0.02));
}
.lb-rank {
    width: 28px;
    font-weight: 800;
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
}
.lb-user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    margin-left: 8px;
    text-decoration: none;
    color: var(--text-primary);
}
.lb-user-details {
    display: flex;
    flex-direction: column;
}
.lb-user-name {
    font-weight: 600;
    font-size: 14px;
}
.lb-user-meta {
    font-size: 11px;
    color: var(--text-secondary);
}
.lb-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* --- Shorts Page: Fullscreen Mode (mobile) --- */
@media (max-width: 767px) {
    .shorts-page .mobile-header,
    .shorts-page .mobile-bottom-nav {
        display: none !important;
    }
    .shorts-page .app-main {
        padding-top: 0 !important;
        padding-bottom: 0 !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
        margin: 0 !important;
    }
    .shorts-page .app-container {
        overflow: hidden;
    }
}

/* --- Messages Page: Chat Window --- */
.chat-window {
    width: 100%;
    max-width: 1020px;
    height: calc(100vh - 105px);
    display: flex;
    background: var(--surface-1);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--elevation-2);
}

.chat-sidebar {
    width: 340px;
    border-right: 1px solid var(--border-default);
    display: flex;
    flex-direction: column;
    background: var(--surface-1);
    flex-shrink: 0;
}

.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--surface-2);
    min-width: 0;
}

.conv-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-subtle-2);
    transition: all var(--motion-fast);
    position: relative;
}

.conv-item:hover {
    background: var(--surface-hover);
}

.conv-item.active {
    background: var(--surface-active);
    border-left: 4px solid var(--color-primary);
}

.msg-bubble-me {
    background: var(--gradient-primary);
    color: #FFF;
    border-radius: 18px 18px 4px 18px;
    padding: 10px 16px;
    font-size: 14px;
    max-width: 72%;
    box-shadow: 0 4px 12px var(--color-primary-glow, rgba(255, 45, 85, 0.22));
    word-break: break-word;
    animation: slideUpFade 0.2s ease-out;
}

.msg-bubble-other {
    background: var(--surface-1);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    border-radius: 18px 18px 18px 4px;
    padding: 10px 16px;
    font-size: 14px;
    max-width: 72%;
    box-shadow: var(--elevation-0);
    word-break: break-word;
    animation: slideUpFade 0.2s ease-out;
}

.msg-time {
    font-size: 10.5px;
    margin-top: 4px;
    opacity: 0.8;
}

.typing-indicator-box {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: var(--surface-1);
    border: 1px solid var(--border-subtle-2);
    border-radius: var(--radius-pill);
    font-size: 12px;
    color: var(--text-secondary);
    width: fit-content;
    box-shadow: var(--elevation-0);
    animation: slideUpFade 0.2s ease;
}

.typing-dots {
    display: inline-flex;
    gap: 3px;
}

.typing-dot {
    width: 5px;
    height: 5px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: bounceScale 1.2s infinite ease-in-out;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

.search-user-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-subtle-2);
    transition: background var(--motion-fast);
}

.search-user-item:hover {
    background: var(--surface-hover);
}

@media (max-width: 768px) {
    .chat-window {
        height: calc(100dvh - var(--mobile-header-height, 56px) - 84px - var(--safe-bottom, 0px));
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-default);
        margin-bottom: 0;
    }
    .chat-sidebar {
        width: 100%;
    }
    .chat-main {
        display: none;
    }
    .chat-window.chat-open .chat-sidebar {
        display: none;
    }
    .chat-window.chat-open .chat-main {
        display: flex;
    }
    #messages-container {
        padding: 14px 12px;
        gap: 10px;
    }
    .msg-bubble-me,
    .msg-bubble-other {
        max-width: 84%;
        padding: 9px 14px;
        font-size: 13.5px;
    }
    #message-send-form {
        padding: 8px 12px;
    }
}

/* ==========================================================================
   Messages & Notifications Polish (PART 12)
   ========================================================================== */

/* ── Chat sidebar header ── */
.chat-sidebar-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-default);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.chat-sidebar-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 18px;
    color: var(--text-primary);
}

.socket-status-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--color-success, #22c55e);
    display: inline-block;
    flex-shrink: 0;
    transition: background var(--motion-normal);
}

.socket-status-dot.offline {
    background: var(--color-warning, #f59e0b);
}

/* ── Conversation search ── */
.chat-search-wrap {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
}

.chat-search-inner {
    position: relative;
}

.chat-search-inner .search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: 13px;
    pointer-events: none;
}

.chat-search-inner .form-input {
    padding: 8px 12px 8px 34px;
    font-size: 13px;
    border-radius: var(--radius-full);
}

/* ── Conv item unread state ── */
.conv-item-unread {
    font-weight: 800;
    color: var(--text-primary);
}

.conv-item-unread .conv-last-msg {
    color: var(--text-secondary);
}

.conv-unread-badge {
    background: var(--color-primary);
    color: #FFF;
    border-radius: var(--radius-full);
    padding: 1px 6px;
    font-size: 11px;
    font-weight: 800;
    min-width: 18px;
    text-align: center;
    flex-shrink: 0;
}

.conv-item-name-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 6px;
}

.conv-item-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 700;
    font-size: 14px;
    color: var(--text-primary);
}

.conv-last-msg {
    font-size: 12.5px;
    color: var(--text-tertiary);
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
    margin-top: 2px;
}

.conv-item-time {
    font-size: 11px;
    color: var(--text-tertiary);
    white-space: nowrap;
    flex-shrink: 0;
}

/* ── Chat header bar ── */
.chat-header-bar {
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-default);
    background: var(--surface-1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-header-user-name {
    font-weight: 800;
    font-size: 14.5px;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--motion-fast);
}

.chat-header-user-name:hover {
    color: var(--color-primary);
}

.chat-header-status {
    font-size: 11.5px;
    font-weight: 600;
}

.chat-header-status.online {
    color: var(--color-success, #22c55e);
}

.chat-header-status.offline {
    color: var(--text-tertiary);
}

/* ── Message input form ── */
.chat-input-form {
    display: none;
    padding: 12px 18px;
    border-top: 1px solid var(--border-default);
    background: var(--surface-1);
    gap: 10px;
    align-items: center;
    flex-shrink: 0;
}

.chat-input {
    border-radius: var(--radius-full) !important;
    padding: 11px 18px !important;
    flex: 1;
}

.chat-send-btn {
    border-radius: 50% !important;
    width: 42px !important;
    height: 42px !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex-shrink: 0 !important;
    transition: transform var(--motion-fast), box-shadow var(--motion-fast) !important;
}

.chat-send-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 4px 14px var(--color-primary-glow, rgba(255,45,85,0.3));
}

/* ── Read receipt check marks ── */
.msg-read-receipt {
    font-size: 10px;
    margin-left: 4px;
    opacity: 0.75;
}

.msg-read-receipt.read {
    color: #60a5fa;
    opacity: 1;
}

/* ── Message empty state ── */
.chat-empty-state {
    margin: auto;
    text-align: center;
    color: var(--text-tertiary);
    max-width: 320px;
    padding: 24px;
}

.chat-empty-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--color-primary-glow, rgba(255,45,85,0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 16px;
}

.chat-empty-illustration {
    width: 170px;
    height: 170px;
    object-fit: contain;
    margin: 0 auto 16px;
    display: block;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.15));
    animation: floatSubtle 4s ease-in-out infinite alternate;
}

.chat-empty-title {
    font-size: 17px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.chat-empty-subtitle {
    font-size: 13px;
    line-height: 1.55;
    color: var(--text-secondary);
}

/* ── Notification item polish ── */
.notif-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-default);
    padding-bottom: 16px;
}

.notif-header-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
}

.notif-item-unread {
    background: var(--color-primary-glow, rgba(255,45,85,0.04));
    border-left: 3px solid var(--color-primary);
}

.notif-item-unread:hover {
    background: rgba(255,45,85,0.07);
}

.notif-actor-img {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
}

.notif-icon-badge {
    position: absolute;
    bottom: -2px;
    right: -4px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    border: 2px solid var(--surface-1);
}

.notif-text {
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.4;
}

.notif-actor-name {
    font-weight: 700;
    color: var(--text-primary);
}

.notif-action-text {
    color: var(--text-secondary);
}

.notif-time {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 2px;
}

.notif-thumb {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
}

.notif-chevron {
    color: var(--text-tertiary);
    flex-shrink: 0;
}

/* Notification list reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .notification-item {
        transition: none;
    }
    .notification-item:hover {
        transform: none;
    }
    .msg-bubble-me,
    .msg-bubble-other {
        animation: none;
    }
    .typing-indicator-box {
        animation: none;
    }
}

/* --- Admin Settings: Configuration Tabs & Cards --- */
.settings-tabs {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid var(--border-default);
    margin-bottom: 24px;
    overflow-x: auto;
}

.settings-tab-btn {
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 14.5px;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    transition: all var(--motion-fast);
    font-family: inherit;
}

.settings-tab-btn:hover {
    color: var(--text-primary);
}

.settings-tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.settings-panel {
    display: none;
    animation: slideUpFade 0.25s ease-out;
}

.settings-panel.active {
    display: block;
}

.config-group-card {
    background: var(--surface-1);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: 24px 28px;
    margin-bottom: 24px;
    box-shadow: var(--elevation-1);
}

.config-group-card h3 {
    font-size: 17px;
    font-weight: 800;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.config-field-row {
    margin-bottom: 18px;
}

.config-field-row:last-child {
    margin-bottom: 0;
}

.secret-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.secret-toggle-btn {
    position: absolute;
    right: 12px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 16px;
}

.help-text {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}


/* ==========================================================================
   Theme Studio UI (PART 13)
   ========================================================================== */

/* Settings page sections */
.settings-section-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Theme mode grid */
.theme-mode-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

@media (max-width: 600px) {
    .theme-mode-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.theme-mode-card {
    position: relative;
    background: var(--surface-2);
    border: 2px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: 0 0 12px;
    cursor: pointer;
    overflow: hidden;
    transition: all var(--motion-fast);
    text-align: center;
    font-family: inherit;
}

.theme-mode-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--elevation-2);
}

.theme-mode-card.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

/* Mini preview thumbnails */
.theme-preview {
    height: 64px;
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 10px;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.theme-preview-light   { background: #F4F6FB; }
.theme-preview-dark    { background: #0B0E14; }
.theme-preview-amoled  { background: #000000; }
.theme-preview-midnight { background: #080D1A; }

.theme-preview-bar {
    height: 10px;
    border-radius: 4px;
    background: var(--color-primary);
    width: 50%;
}

.theme-preview-light   .theme-preview-bar { background: #FF2D55; }
.theme-preview-dark    .theme-preview-bar { background: #FF2D55; }
.theme-preview-amoled  .theme-preview-bar { background: #FF2D55; }
.theme-preview-midnight .theme-preview-bar { background: #6B8EFF; }

.theme-preview-card {
    height: 8px;
    border-radius: 4px;
    width: 80%;
}

.theme-preview-light   .theme-preview-card { background: rgba(0,0,0,0.1); }
.theme-preview-dark    .theme-preview-card { background: rgba(255,255,255,0.1); }
.theme-preview-amoled  .theme-preview-card { background: rgba(255,255,255,0.07); }
.theme-preview-midnight .theme-preview-card { background: rgba(100,140,220,0.15); }

.theme-mode-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text-secondary);
}

.theme-mode-check {
    display: none;
    position: absolute;
    top: 8px;
    right: 8px;
    color: var(--color-primary);
    font-size: 16px;
}

.theme-mode-card.active .theme-mode-check {
    display: block;
}

/* Accent color swatches */
.accent-swatches {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.accent-swatch {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    background: var(--surface-2);
    border: 2px solid var(--border-default);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    cursor: pointer;
    transition: all var(--motion-fast);
    font-family: inherit;
    min-width: 72px;
    position: relative;
}

.accent-swatch:hover {
    border-color: var(--swatch-color, var(--color-primary));
    transform: translateY(-2px);
}

.accent-swatch.active {
    border-color: var(--swatch-color, var(--color-primary));
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--swatch-color, var(--color-primary)) 30%, transparent);
}

.accent-swatch-dot {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--swatch-color, var(--color-primary));
    display: block;
    box-shadow: 0 2px 8px color-mix(in srgb, var(--swatch-color, var(--color-primary)) 40%, transparent);
    transition: transform var(--motion-fast);
}

.accent-swatch:hover .accent-swatch-dot {
    transform: scale(1.1);
}

.accent-swatch-label {
    font-size: 11.5px;
    font-weight: 700;
    color: var(--text-secondary);
}

.accent-swatch-check {
    display: none;
    position: absolute;
    top: 5px;
    right: 5px;
    color: var(--swatch-color, var(--color-primary));
    font-size: 12px;
    font-weight: 900;
}

.accent-swatch.active .accent-swatch-check {
    display: block;
}

/* Live preview container */
.theme-live-preview {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-default);
    overflow: hidden;
}

.theme-live-preview-inner {
    background: var(--surface-1);
    padding: 18px 20px;
}

.theme-live-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-live-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    flex-shrink: 0;
}

/* Quick links in settings */
.settings-quick-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    transition: background var(--motion-fast);
}

.settings-quick-link:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

/* Sidebar settings nav item */
.nav-settings-item .nav-label::after {
    content: ' ⚙️';
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .theme-mode-card,
    .accent-swatch,
    .accent-swatch-dot {
        transition: none;
    }
    .theme-mode-card:hover,
    .accent-swatch:hover {
        transform: none;
    }
}

/* ==========================================================================
   PART 15 — GLOBAL POLISH (Auth, Post Detail, Skeleton Comments)
   ========================================================================== */

/* ── Auth System (Login & Register Split-Screen) ──────────────────────── */

.auth-split-wrapper {
    width: 100%;
    max-width: 1060px;
    margin: 40px auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-split-container {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    background: var(--surface-1);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-2xl, 24px);
    overflow: hidden;
    box-shadow: var(--elevation-3, 0 20px 40px rgba(0, 0, 0, 0.25));
}

.auth-split-visual {
    position: relative;
    background: #0A0F1D;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 44px 36px;
    min-height: 520px;
}

.auth-split-visual-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.auth-split-container:hover .auth-split-visual-img {
    transform: scale(1.03);
}

.auth-split-visual-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.15) 0%, rgba(15, 23, 42, 0.5) 45%, rgba(15, 23, 42, 0.95) 100%);
    pointer-events: none;
}

.auth-split-visual-content {
    position: relative;
    z-index: 2;
    color: #FFFFFF;
}

.auth-split-brand-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 45, 85, 0.3);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 6px 14px;
    border-radius: 9999px;
    font-size: 12.5px;
    font-weight: 700;
    color: #FFF;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.auth-split-visual-title {
    font-size: 26px;
    font-weight: 900;
    line-height: 1.3;
    letter-spacing: -0.5px;
    margin-bottom: 10px;
    color: #FFFFFF;
    font-family: var(--font-display);
}

.auth-split-visual-desc {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
}

.auth-split-form-side {
    padding: 44px 36px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

@media (max-width: 900px) {
    .auth-split-container {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }
    .auth-split-visual {
        display: none;
    }
    .auth-split-form-side {
        padding: 36px 24px;
    }
}

/* ── Community Creator Hub Widget ─────────────────────────────────────── */
.community-widget-card {
    background: var(--surface-1);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: var(--elevation-1);
    transition: transform var(--motion-fast), box-shadow var(--motion-fast);
}

.community-widget-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--elevation-2);
}

.community-widget-cover {
    position: relative;
    width: 100%;
    height: 120px;
    overflow: hidden;
}

.community-widget-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.community-widget-card:hover .community-widget-cover img {
    transform: scale(1.05);
}

.community-widget-body {
    padding: 16px;
}

.community-widget-title {
    font-size: 14.5px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.community-widget-desc {
    font-size: 12.5px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 12px;
}

.community-widget-btn {
    width: 100%;
    font-size: 12.5px;
    padding: 8px 12px;
    font-weight: 700;
}

.auth-wrapper {
    width: 100%;
    max-width: 460px;
    margin: 40px auto;
    padding: 0 16px;
}

.auth-card {
    background: var(--surface-1);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    box-shadow: var(--elevation-3);
    padding: 40px 32px;
    position: relative;
    overflow: hidden;
    transition: box-shadow var(--motion-normal);
}

.auth-glow {
    position: absolute;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 160px;
    height: 100px;
    background: var(--gradient-primary);
    filter: blur(48px);
    opacity: 0.35;
    pointer-events: none;
    border-radius: 50%;
}

.auth-glow.accent {
    background: var(--gradient-accent);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-icon-badge {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin: 0 auto 16px auto;
    box-shadow: 0 6px 20px var(--color-primary-glow);
    transition: transform var(--motion-fast);
}

.auth-icon-badge.accent {
    background: var(--gradient-accent);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.auth-card:hover .auth-icon-badge {
    transform: scale(1.05);
}

.auth-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-primary);
    font-family: var(--font-display);
    letter-spacing: -0.02em;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 6px;
    line-height: 1.4;
}

.auth-form-group {
    margin-bottom: 18px;
}

.auth-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.auth-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.01em;
}

.auth-forgot-link {
    font-size: 12.5px;
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    transition: opacity var(--motion-fast);
}

.auth-forgot-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.auth-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.auth-input-icon {
    position: absolute;
    left: 14px;
    color: var(--text-tertiary);
    font-size: 17px;
    pointer-events: none;
    transition: color var(--motion-fast);
}

.auth-input-wrap .form-input {
    width: 100%;
    padding-left: 44px;
    padding-right: 44px;
    height: 46px;
    font-size: 14.5px;
    border-radius: var(--radius-md);
    background: var(--surface-2);
    border: 1px solid var(--border-default);
    color: var(--text-primary);
    transition: all var(--motion-fast);
}

.auth-input-wrap .form-input:focus {
    background: var(--surface-1);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.auth-input-wrap .form-input:focus ~ .auth-input-icon {
    color: var(--color-primary);
}

.auth-toggle-pwd {
    position: absolute;
    right: 12px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 17px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--motion-fast);
    background: none;
    border: none;
}

.auth-toggle-pwd:hover {
    color: var(--text-primary);
    background: var(--surface-hover);
}

.auth-submit-btn {
    margin-top: 26px;
    height: 48px;
    font-size: 15px;
    font-weight: 700;
    border-radius: var(--radius-pill);
    box-shadow: 0 4px 16px var(--color-primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
}

.auth-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--color-primary-glow);
}

.auth-submit-btn:active {
    transform: translateY(0);
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 13.5px;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--color-primary);
    font-weight: 700;
    margin-left: 4px;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* ── Post Detail Page Layout & Components ─────────────────────────────── */

.post-detail-layout {
    display: flex;
    justify-content: center;
    width: 100%;
    max-width: 1060px;
    gap: 32px;
    margin: 0 auto;
}

.post-detail-main {
    flex: 1;
    max-width: 680px;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

#post-detail-wrapper .feed-reveal,
.post-detail-main .feed-reveal,
#post-detail-wrapper .post-card,
.post-detail-main .post-card {
    opacity: 1 !important;
    transform: none !important;
    visibility: visible !important;
}

#post-detail-wrapper .post-media-container {
    aspect-ratio: auto;
    min-height: 280px;
    max-height: 80vh;
}

#post-detail-wrapper .post-media-container video,
#post-detail-wrapper .post-media-container img {
    max-height: 80vh;
    object-fit: contain;
}

.post-detail-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: var(--radius-pill);
    background: var(--surface-1);
    border: 1px solid var(--border-default);
    width: fit-content;
    transition: all var(--motion-fast);
    box-shadow: var(--elevation-0);
}

.post-detail-back:hover {
    color: var(--color-primary);
    background: var(--surface-hover);
    transform: translateX(-3px);
}

.post-detail-back i {
    font-size: 16px;
    transition: transform var(--motion-fast);
}

.post-detail-back:hover i {
    transform: translateX(-2px);
}

.comments-card {
    background: var(--surface-1);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-1);
    padding: 24px;
}

.comments-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-default);
}

.comments-header h4 {
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.comments-count-badge {
    background: var(--surface-2);
    border: 1px solid var(--border-default);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text-secondary);
}

.comments-form {
    margin-bottom: 24px;
}

.comments-input-row {
    display: flex;
    gap: 12px;
    align-items: center;
}

.comments-input-row .avatar {
    flex-shrink: 0;
}

.comments-input-wrap {
    flex: 1;
    display: flex;
    gap: 8px;
}

.comments-input-wrap .form-input {
    border-radius: var(--radius-pill);
    padding: 11px 18px;
    font-size: 14px;
    background: var(--surface-2);
    border: 1px solid var(--border-default);
    color: var(--text-primary);
    transition: all var(--motion-fast);
}

.comments-input-wrap .form-input:focus {
    background: var(--surface-1);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.comments-submit-btn {
    border-radius: var(--radius-pill);
    padding: 0 20px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.emoji-bar {
    display: flex;
    gap: 6px;
    margin-top: 10px;
    padding: 4px 0 2px 48px;
    overflow-x: auto;
}

.emoji-btn {
    border: 1px solid transparent;
    background: var(--surface-2);
    font-size: 18px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-pill);
    transition: all var(--motion-fast);
    line-height: 1;
}

.emoji-btn:hover {
    background: var(--surface-hover);
    border-color: var(--border-default);
    transform: scale(1.15) translateY(-2px);
}

.emoji-btn:active {
    transform: scale(0.95);
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.comment-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    animation: motionFadeIn var(--duration-fast) ease-out;
}

.comment-bubble {
    flex: 1;
    background: var(--surface-2);
    border: 1px solid var(--border-subtle);
    padding: 12px 16px;
    border-radius: var(--radius-lg);
    border-top-left-radius: 4px;
    transition: background var(--motion-fast);
}

.comment-bubble:hover {
    background: var(--surface-hover);
}

.comment-bubble-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.comment-author-name {
    font-weight: 700;
    font-size: 13.5px;
    color: var(--text-primary);
    text-decoration: none;
}

.comment-author-name:hover {
    color: var(--color-primary);
}

.comment-time {
    font-size: 11.5px;
    color: var(--text-tertiary);
}

.comment-text {
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.5;
    word-break: break-word;
}

/* ── Skeleton Comments Loader ─────────────────────────────────────────── */

.skeleton-comment {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 8px 0;
}

.skeleton-comment-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
}

.skeleton-comment-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.skeleton-comment-line-1 {
    width: 35%;
    height: 12px;
    border-radius: 4px;
}

.skeleton-comment-line-2 {
    width: 80%;
    height: 14px;
    border-radius: 4px;
}

@media (max-width: 768px) {
    .auth-card {
        padding: 30px 20px;
    }
    .emoji-bar {
        padding-left: 0;
    }
    .post-detail-layout {
        gap: 0;
    }
}

/* ==========================================================================
   Header Dropdown Menus (Notifications, Messages, Quick Profile)
   ========================================================================== */

.header-action-wrapper {
    display: inline-flex;
    align-items: center;
    position: relative;
}

.header-dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 360px;
    max-width: calc(100vw - 24px);
    max-height: 480px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.16), 0 4px 16px rgba(0, 0, 0, 0.08);
    z-index: var(--z-dropdown, 1000);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: motionFadeIn 0.15s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: top right;
}

.header-dropdown-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-surface);
}

.header-dropdown-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
}

.btn-header-action {
    background: transparent;
    border: none;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.btn-header-action:hover {
    background: var(--bg-surface-hover);
    color: var(--color-primary-hover);
}

.header-dropdown-body {
    flex: 1;
    overflow-y: auto;
    max-height: 340px;
    background: var(--bg-surface);
}

.header-dropdown-footer {
    padding: 10px 16px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    background: var(--bg-surface);
}

.header-dropdown-view-all {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    display: block;
}

.header-dropdown-view-all:hover {
    text-decoration: underline;
}

.header-dropdown-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s ease;
    cursor: pointer;
    position: relative;
}

.header-dropdown-item:last-child {
    border-bottom: none;
}

.header-dropdown-item:hover {
    background: var(--bg-surface-hover);
}

.header-dropdown-item.unread {
    background: rgba(var(--primary-glow-rgb, 255, 62, 137), 0.08);
}

.header-dropdown-item.unread:hover {
    background: rgba(var(--primary-glow-rgb, 255, 62, 137), 0.14);
}

.header-item-content {
    flex: 1;
    min-width: 0;
}

.header-item-title {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.35;
    word-break: break-word;
}

.header-item-preview {
    font-size: 12.5px;
    color: var(--text-muted);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-item-time {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

.unread-indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
    flex-shrink: 0;
    margin-top: 6px;
}

.header-dropdown-empty {
    padding: 36px 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13.5px;
}

.header-dropdown-empty i {
    font-size: 32px;
    display: block;
    margin-bottom: 8px;
    opacity: 0.5;
}

/* Quick Profile Dropdown */
.header-profile-dropdown {
    width: 280px;
    background: var(--bg-surface) !important;
    padding-bottom: 4px;
}

.profile-dropdown-user-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-surface);
}

.profile-dropdown-user-info {
    flex: 1;
    min-width: 0;
}

.profile-dropdown-menu-list {
    padding: 6px 0;
    background: var(--bg-surface);
}

.profile-dropdown-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-main);
    text-decoration: none;
    transition: background 0.15s ease, color 0.15s ease;
    cursor: pointer;
    border: none;
    background: var(--bg-surface);
    width: 100%;
    text-align: left;
}

.profile-dropdown-link:hover {
    background: var(--bg-surface-hover);
}

.profile-dropdown-link i {
    font-size: 16px;
    width: 20px;
    text-align: center;
    color: var(--text-muted);
    transition: color 0.15s ease;
}

.profile-dropdown-link:hover i {
    color: var(--color-primary);
}

.header-dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 4px 0;
}

@media (max-width: 768px) {
    .header-dropdown-menu {
        position: fixed;
        top: 60px;
        right: 12px;
        left: 12px;
        width: auto;
        max-width: none;
        max-height: calc(100vh - 140px);
    }
}

/* ==========================================================================
   Upgraded Sidebar & Widescreen Content Components
   ========================================================================== */

/* Section headers in sidebar */
.nav-section-label {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.8px;
    color: var(--text-tertiary);
    padding: 18px 16px 6px 16px;
    text-transform: uppercase;
    transition: opacity var(--motion-fast);
}

.app-sidebar[data-sidebar-collapsed="true"] .nav-section-label {
    display: none;
}

/* Hot badge in sidebar */
.nav-badge-pill {
    background: linear-gradient(135deg, #FF2D55 0%, #FF8C00 100%);
    color: #FFF;
    font-size: 10px;
    font-weight: 800;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(255, 45, 85, 0.4);
    margin-left: auto;
}

.app-sidebar[data-sidebar-collapsed="true"] .nav-badge-pill {
    display: none;
}

/* Active Nav Item Indicator */
.nav-item.active {
    background: var(--bg-surface-hover);
    color: var(--primary);
    font-weight: 700;
    position: relative;
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 3.5px;
    background: var(--gradient-primary);
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
    box-shadow: var(--shadow-glow);
}

/* Sidebar Action: Create Post */
.nav-item.nav-item-create {
    color: var(--primary);
    font-weight: 700;
}

.nav-item.nav-item-create:hover {
    background: rgba(var(--primary-glow-rgb, 255, 62, 137), 0.12);
}

/* Sidebar User Mini Card at Footer */
.sidebar-user-card {
    margin-top: auto;
    background: var(--bg-surface-hover);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    transition: all var(--motion-fast);
}

.sidebar-user-card:hover {
    border-color: var(--border-focus);
    box-shadow: var(--elevation-1);
}

.sidebar-user-info-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    min-width: 0;
    flex: 1;
}

.sidebar-avatar-wrap {
    position: relative;
    flex-shrink: 0;
}

.sidebar-user-details {
    min-width: 0;
    flex: 1;
}

.sidebar-user-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.app-sidebar[data-sidebar-collapsed="true"] .sidebar-user-card {
    padding: 8px 4px;
    justify-content: center;
    border: none;
    background: transparent;
}

.app-sidebar[data-sidebar-collapsed="true"] .sidebar-user-details,
.app-sidebar[data-sidebar-collapsed="true"] .sidebar-user-actions {
    display: none;
}

/* ==========================================================================
   Settings Layout & Multi-Tab Content
   ========================================================================== */

.settings-layout {
    display: flex;
    justify-content: center;
    width: 100%;
    max-width: 1260px;
    gap: 32px;
}

.settings-main {
    flex: 1;
    max-width: 820px;
    min-width: 0;
}

.settings-tabs-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    padding: 6px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    scrollbar-width: none;
}

.settings-tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--motion-fast);
    white-space: nowrap;
}

.settings-tab-btn:hover {
    color: var(--text-main);
    background: var(--bg-surface-hover);
}

.settings-tab-btn.active {
    background: var(--bg-main);
    color: var(--primary);
    font-weight: 700;
    box-shadow: var(--elevation-1);
}

.settings-tab-pane {
    display: none;
    animation: motionFadeIn 0.2s ease;
}

.settings-tab-pane.active {
    display: block;
}

/* Quick Navigation Links List in Settings Right Card */
.quick-nav-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.quick-nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-main);
    font-size: 13.5px;
    font-weight: 600;
    transition: all var(--motion-fast);
}

.quick-nav-item:hover {
    background: var(--bg-surface-hover);
    color: var(--primary);
    transform: translateX(4px);
}

.quick-nav-item i:first-child {
    font-size: 16px;
    margin-right: 10px;
    color: var(--text-muted);
}

.quick-nav-item:hover i:first-child {
    color: var(--primary);
}

.settings-card {
    padding: 28px;
    margin-bottom: 24px;
}

@media (max-width: 767px) {
    .settings-layout {
        flex-direction: column;
        gap: 16px;
        padding: 0 10px !important;
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        box-sizing: border-box !important;
    }
    .settings-main {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
    }
    .settings-card {
        padding: 16px 12px !important;
        margin-bottom: 16px !important;
        border-radius: var(--radius-lg) !important;
    }
    .settings-tabs-bar {
        gap: 6px;
        padding: 4px;
        margin-bottom: 16px;
        width: 100%;
        box-sizing: border-box;
    }
    .settings-tab-btn {
        padding: 8px 12px;
        font-size: 12.5px;
    }
    .theme-mode-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 10px !important;
    }
    .accent-swatches {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 8px !important;
    }
}