/* Only the three discovery pages opt in. 600px and wider stay on the desktop UI. */
.app-bottom-nav, .app-detail-bar, .app-row-more, .app-section-toggle { display: none; }

/* One size standard for tablet (600-1199px) and phone (<600px) on all three pages (owner, 2026-11-12).
   ui-ux-pro-max "data-dense dashboard": 4/8px spacing, 8px between tap targets, web targets 24px+.
   Colors are each page's desktop theme tokens (index = --bg-primary/--input-bg, channel = --bg-body/--bg-card). */
@media (max-width: 1199.98px) {
  :is(body.index-dashboard, body.detail-page) {
    --app-canvas: var(--bg-body, var(--bg-primary, #f8f9fa));
    --app-surface: var(--bg-card, var(--input-bg, #ffffff));
    --app-line: var(--border-color, #d1d5db);
    --app-accent: var(--primary-color, #3b82f6);
    --app-soft: color-mix(in srgb, var(--app-accent) 14%, transparent);
    --ui-control: 36px;
    --ui-radius: 10px;
    --ui-card-radius: 12px;
    --ui-card-pad: 16px;
    --ui-gap: 12px;
    --ui-row-pad: 10px;
    --ui-thumb: 120px;
    --ui-fs-title: 20px;
    --ui-fs-section: 16px;
    --ui-fs-body: 14px;
    --ui-fs-meta: 12px;
  }
  :is(body.index-dashboard, body.detail-page).dark-theme {
    --app-canvas: var(--bg-body, var(--bg-primary, #0a0a0a));
    --app-surface: var(--bg-card, var(--input-bg, #0a0a0a));
    --app-line: var(--border-color, #333333);
    --app-accent: var(--primary-color, #dc2626);
  }
}

/* Tablet tables (600-1199px) on the index and channel pages: one 16:9 thumbnail size that never shrinks or clips. */
@media (min-width: 600px) and (max-width: 1199.98px) {
  :is(body.index-dashboard #dataContainer .video-table, body.channel-detail-page .videos-section .data-table) .thumbnail-wrapper.video { flex: 0 0 96px; width: 96px !important; height: 54px !important; }
  :is(body.index-dashboard #dataContainer .video-table, body.channel-detail-page .videos-section .data-table) .thumbnail-wrapper.video .video-thumbnail { width: 100% !important; height: 100% !important; object-fit: cover; border-radius: 6px; }
}

@media (max-width: 599.98px) {
  :is(body.index-dashboard, body.detail-page) {
    --ui-card-pad: 12px;
    --ui-thumb: 96px;
    --ui-fs-title: 18px;
    --ui-fs-section: 15px;
    --app-gutter: clamp(14px, 2.5vw, 32px);
    --app-bar-height: calc(64px + env(safe-area-inset-top));
    background: var(--app-canvas);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
    -webkit-tap-highlight-color: transparent;
  }
  .app-bottom-nav {
    position: fixed; inset: auto 0 0; z-index: 1003;
    display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
    padding: 6px max(8px, env(safe-area-inset-right)) max(6px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
    background: var(--app-surface); border-top: 1px solid var(--app-line);
  }
  .app-bottom-nav a {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    min-height: 52px; gap: 4px; padding: 4px; text-decoration: none;
    font-size: 11px; font-weight: 600; line-height: 1.3; color: var(--text-secondary, #657080);
  }
  .app-bottom-nav svg { width: 22px; height: 22px; }
  .app-bottom-nav [aria-current] { color: var(--app-accent); }
  .app-bottom-nav [aria-current] svg { background: var(--app-soft); box-shadow: 0 0 0 5px var(--app-soft); border-radius: 6px; }
  :is(body.index-dashboard, body.detail-page) :is(button, a, select, input, textarea):focus-visible { outline: 2px solid var(--app-accent); outline-offset: 3px; }
  :is(body.index-dashboard, body.detail-page) :is(input, select, textarea) { font-size: 16px; }
  :is(body.index-dashboard, body.detail-page) :is(button, a) { touch-action: manipulation; }
  :is(body.index-dashboard, body.detail-page) .pagination { display: flex; flex-wrap: wrap; gap: 6px; }
  :is(body.index-dashboard, body.detail-page) .pagination :is(button, a) { min-height: var(--ui-control); min-width: var(--ui-control); }
  :is(body.index-dashboard, body.detail-page) #toastContainer { max-width: calc(100vw - 28px); }
  body.detail-page { padding: 0; }
  body.detail-page > .container {
    width: 100%; max-width: 1440px; min-width: 0; margin: 0 auto; border-radius: 0;
    padding: 18px max(var(--app-gutter), env(safe-area-inset-right)) calc(90px + env(safe-area-inset-bottom)) max(var(--app-gutter), env(safe-area-inset-left));
    background: var(--app-canvas); animation: none;
  }
  .app-detail-bar {
    position: sticky; top: 0; z-index: 1002; display: flex; align-items: center; gap: 12px;
    min-height: var(--app-bar-height); padding: calc(8px + env(safe-area-inset-top)) calc(max(var(--app-gutter), env(safe-area-inset-right)) + 48px) 8px max(var(--app-gutter), env(safe-area-inset-left));
    background: var(--app-surface); border-bottom: 1px solid var(--app-line);
  }
  .app-back { display: grid; place-items: center; width: 44px; height: 44px; flex-shrink: 0; color: var(--text-primary); }
  .app-back svg { width: 24px; height: 24px; }
  .app-brand { display: flex; align-items: center; min-width: 0; }
  .app-brand img { width: 140px; max-width: 100%; height: 32px; object-fit: contain; }
  .app-logo-dark, .dark-theme .app-logo-light { display: none; }
  .dark-theme .app-logo-dark { display: block; }
  body.detail-page .theme-toggle {
    position: fixed; top: calc(10px + env(safe-area-inset-top)); right: max(var(--app-gutter), env(safe-area-inset-right)); z-index: 1003;
    width: 44px; height: 44px; min-width: 44px; padding: 10px; border-radius: 12px;
    border: 1px solid var(--app-line); background: var(--app-surface); color: var(--text-primary); box-shadow: none;
  }
  body.detail-page .theme-text { display: none; }
  body.detail-page :is(.section-title, .stats-title, h1, h2, h3) { overflow-wrap: anywhere; }
  body.detail-page :is(.header, .header-rank, .header-right, .video-header, .video-description, .stats-section, .chart-section, .growth-section, .niche-section, .ai-prompt-section, .ai-analysis-container) {
    min-width: 0; background: var(--app-surface); border: 1px solid var(--app-line); border-radius: 16px; box-shadow: none;
  }
  body.detail-page :is(.main-tab-panel, .tab-content, .stats-container, .analytics-charts-grid, .growth-col, .ai-tab-left, .ai-tab-right) { min-width: 0; max-width: 100%; }
  body.detail-page .main-tab-panel.active { height: auto; overflow: visible; padding: 0; background: transparent; border: 0; animation: none; }
  body.detail-page :is(.main-tabs, .ai-sub-tabs, .video-tab-groups, .period-filter-buttons) { max-width: 100%; overflow-x: auto; overflow-y: hidden; overscroll-behavior-x: contain; scrollbar-width: none; }
  body.detail-page :is(.main-tab-btn, .ai-sub-tab, .video-tab, .period-btn, .rank-filter-btn, .rank-filter-days, .vrank-btn, .filter-btn, .download-button, .youtube-button, .external-link, .report-download-btn, .ai-icon-btn, .subtitle-copy-btn, .subtitle-tab) { min-height: var(--ui-control); }
  body.detail-page .main-tabs { position: sticky; top: var(--app-bar-height); z-index: 30; margin-bottom: var(--ui-gap); background: var(--app-canvas); border-radius: 0; flex-wrap: nowrap; }
  body.detail-page .main-tab-btn { flex: 0 0 auto; padding: 8px 14px; font-size: var(--ui-fs-body); }
  body.detail-page .app-row-more { display: inline-flex; align-items: center; min-height: 44px; padding: 6px 0; margin-top: 4px; border: 0; background: transparent; color: var(--app-accent); font: inherit; font-size: 13px; cursor: pointer; }
  body.detail-page .app-row-more::after { content: '⌄'; margin-left: 8px; }
  body.detail-page .app-row-more[aria-expanded="true"]::after { content: '⌃'; }
}

@media (max-width: 599.98px) {
  .app-section-toggle { display: grid; place-items: center; margin-left: auto; width: var(--ui-control); height: var(--ui-control); flex-shrink: 0; padding: 8px; border: 0; background: transparent; color: var(--text-secondary); cursor: pointer; }
  .app-section-toggle svg { width: 20px; height: 20px; }
  .app-section-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
  .app-fold:not(.app-fold-open) > :not(:first-child) { display: none !important; }
  body.detail-page .app-fold { padding-block: 4px; }
  body.detail-page :is(.rank-panel-head, .similar-header, .vrank-head) { margin: 0; }
  body.detail-page .app-fold-open > :first-child { margin-bottom: 10px; }
}
@media (prefers-reduced-motion: reduce) and (max-width: 599.98px) {
  :is(body.index-dashboard, body.detail-page) *, :is(body.index-dashboard, body.detail-page) *::before, :is(body.index-dashboard, body.detail-page) *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}