@media (max-width: 768px) {
  #sc-player-area { display: block; }
  #sc-widget {
    position: static;
    width: 0;
    height: 0;
    clip: auto;
  }
}
@media (max-width: 768px) {
  #sc-player-area {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 99;
    background: var(--bg);
    border-top: 1px solid var(--card-border);
  }
  #sc-placeholder {
    width: 100%;
    height: 80px;
    background: var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font);
    font-size: 12px;
    color: var(--text-tertiary);
  }
  #sc-placeholder.hidden { display: none; }
  body.night #sc-player-area { background: #1e2228; border-top-color: #3a3f48; }
  #sc-widget.sc-active {
    position: static;
    width: 100%;
    height: 80px;
    clip: auto;
    overflow: visible;
    pointer-events: auto;
    z-index: 99;
  }
  body.night #sc-widget.sc-active {
    filter: invert(0.88) hue-rotate(180deg);
  }
  body { padding-bottom: 84px; }
}

/* ═══════════════════════════════════════════
   Mobile View (≤ 768px)
   ═══════════════════════════════════════════ */
@media (max-width: 768px) {
  /* Hide desktop-only elements */
  #graph-viewport { display: none !important; }
  #dev-toggle { display: none !important; }
  #dev-panel { display: none !important; }
  #toolbar { display: none !important; }

  /* Mode tabs in mobile header */
  #mode-tabs { display: none !important; }
  #mobile-mode-tabs {
    display: flex !important;
    position: fixed;
    top: calc(8px + env(safe-area-inset-top, 0px));
    left: 50%;
    transform: translateX(-50%);
    z-index: 200;
    gap: 2px;
    background: var(--card-border);
    border-radius: var(--card-radius);
    padding: 2px;
    height: 32px;
    box-sizing: border-box;
    align-items: center;
  }
  #mobile-mode-tabs .mode-tab {
    font-family: var(--font);
    font-size: 12px;
    font-weight: 400;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-radius: calc(var(--card-radius) - 2px);
    padding: 0 14px;
    height: 100%;
    cursor: pointer;
    transition: none;
    display: flex;
    align-items: center;
  }
  #mobile-mode-tabs .mode-tab.active {
    background: #f0ddd4;
    color: #9a5843;
    font-weight: 500;
  }

  /* Show mobile tracks container */
  #mobile-tracks { display: flex !important; }
  body.crates-mode #mobile-tracks { display: none !important; }
  body.crates-mode #mobile-shuffle-area { display: none !important; }
  body.crates-mode #mobile-sources { display: none !important; }

  /* Crates view on mobile */
  #crates-view { touch-action: none; }

  /* Mobile shuffle button — fills center */
  #mobile-shuffle-btn { display: none !important; }

  #mobile-shuffle-area {
    flex-shrink: 0;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    gap: 8px;
  }
  #mobile-shuffle-area button {
    display: flex;
    width: auto;
    justify-content: center;
    font-family: var(--font);
    font-size: 16px;
    font-weight: 400;
    color: var(--text-primary);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    padding: 6px 16px;
    cursor: pointer;
    align-items: center;
    gap: 6px;
    box-shadow: 0 1px 4px rgba(42, 37, 32, 0.08);
    transition: color 0.2s, background 0.2s;
  }
  #mobile-shuffle-area button:active { background: var(--card-border); }
  #mobile-shuffle-area .mobile-shuffle { padding: 6px 20px; }
  #mobile-shuffle-area .mobile-share { padding: 6px 10px; }
  #mobile-shuffle-area .mobile-share svg .check { display: none; }
  #mobile-shuffle-area .mobile-share.copied { color: var(--connection-highlight); border-color: var(--connection-highlight); }
  #mobile-shuffle-area .mobile-share.copied svg .check { display: block; }
  #mobile-shuffle-area .mobile-share.copied svg .link { display: none; }

  /* Mobile header title — hidden, replaced by mode tabs */
  #mobile-title {
    display: none !important;
    position: fixed;
    top: calc(8px + env(safe-area-inset-top, 0px));
    left: 0; right: 0;
    z-index: 190;
    text-align: center;
    font-family: var(--font);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 32px;
    pointer-events: none;
  }

  /* Mobile search — icon that expands */
  #mobile-search-wrap {
    display: flex !important;
    position: fixed;
    top: calc(8px + env(safe-area-inset-top, 0px));
    left: 8px;
    z-index: 200;
    align-items: center;
  }
  #mobile-search-wrap .search-icon {
    position: absolute;
    left: 50%; top: 50%; transform: translate(-50%, -50%);
    width: 14px; height: 14px;
    stroke: var(--text-secondary); fill: none;
    stroke-width: 2; stroke-linecap: round;
    pointer-events: none;
    z-index: 1;
    transition: left 0.25s cubic-bezier(0.22, 1, 0.36, 1), transform 0.25s cubic-bezier(0.22, 1, 0.36, 1);
  }
  #mobile-search-wrap.open .search-icon {
    left: 10px; transform: translate(0, -50%);
  }
  #mobile-search-input {
    font-family: var(--font);
    font-size: 12px;
    font-weight: 400;
    color: var(--text-primary);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    padding: 6px 6px 6px 6px;
    width: 32px;
    height: 32px;
    box-sizing: border-box;
    outline: none;
    cursor: pointer;
    transition: width 0.25s cubic-bezier(0.22, 1, 0.36, 1), padding 0.25s cubic-bezier(0.22, 1, 0.36, 1);
  }
  #mobile-search-wrap.open #mobile-search-input {
    width: calc(100vw - 56px);
    padding-left: 30px;
    cursor: text;
  }
  #mobile-search-input::placeholder { color: transparent; }
  #mobile-search-wrap.open #mobile-search-input::placeholder { color: var(--text-tertiary); }
  #mobile-search-input:focus { border-color: var(--connection-highlight); }
  #mobile-search-input.filtered { border-color: var(--connection-highlight); }
  #mobile-search-wrap.open #mobile-search-input.filtered { padding-right: 28px; }
  #mobile-search-clear {
    position: absolute;
    right: 8px; top: 50%; transform: translateY(-50%);
    width: 16px; height: 16px;
    border: none; background: none;
    cursor: pointer; color: var(--text-tertiary);
    font-size: 14px; line-height: 1; padding: 0;
    display: none;
  }
  #mobile-search-wrap.open #mobile-search-input.filtered ~ #mobile-search-clear { display: block; }
  #mobile-search-ac {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    width: calc(100vw - 56px);
    max-height: 300px;
    overflow-y: auto;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    display: none;
    z-index: 210;
  }
  #mobile-search-ac.open { display: block; }
  #mobile-search-ac .ac-section-header {
    font-family: var(--font);
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-tertiary);
    padding: 8px 14px 4px;
  }

  #mobile-help-btn {
    display: flex !important;
    position: fixed;
    top: calc(8px + env(safe-area-inset-top, 0px));
    right: 8px;
    z-index: 200;
    width: 32px;
    height: 32px;
    align-items: center;
    justify-content: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    cursor: pointer;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 16px;
    font-weight: 500;
    padding: 0;
  }
  #mobile-help-btn:active { background: var(--card-border); }
  #mobile-help-btn.open { color: var(--text-primary); }

  #mobile-help-panel {
    display: none;
    position: fixed;
    top: calc(48px + env(safe-area-inset-top, 0px));
    right: 8px;
    z-index: 199;
    width: calc(100vw - 16px);
    max-height: calc(100vh - 64px - env(safe-area-inset-top, 0px));
    overflow-y: auto;
    background: color-mix(in srgb, var(--card-bg) 92%, transparent);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    backdrop-filter: blur(20px) saturate(1.4);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    padding: 20px;
    font-family: var(--font);
    transform-origin: top right;
    animation: mobile-help-in 0.2s ease;
  }
  #mobile-help-panel.visible { display: block; }
  #mobile-help-panel h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 12px 0;
  }
  #mobile-help-panel p {
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-secondary);
    margin: 0 0 8px 0;
  }
  #mobile-help-panel p:last-child { margin-bottom: 0; }
  @keyframes mobile-help-in {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
  }

  /* Hide desktop help overlay on mobile — use mobile-help-panel instead */
  #help-overlay { display: none !important; }
  .help-diagram { display: none !important; }

  /* Mobile tracks layout */
  #mobile-tracks {
    flex-direction: column;
    flex: 1;
    overflow: hidden;
    justify-content: center;
    padding: 40px 0;
  }

  /* ── Carousel ── */
  #mobile-carousel {
    display: flex;
    align-items: center;
    gap: 20px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 0 calc((100vw - 70vw) / 2 + 5vw) 0 calc((100vw - 70vw) / 2 - 5vw);
    scroll-padding-inline: calc((100vw - 70vw) / 2 - 5vw) calc((100vw - 70vw) / 2 + 5vw);
    flex-shrink: 0;
    margin-bottom: 12px;
  }
  #mobile-carousel::-webkit-scrollbar { display: none; }

  .mobile-carousel-item {
    flex-shrink: 0;
    width: 60vw;
    scroll-snap-align: center;
  }
  .mobile-carousel-item[data-rank="root"] {
    width: 70vw;
  }
  .mobile-carousel-card {
    background: var(--card-bg);
    border: 2px solid var(--card-border);
    border-radius: var(--card-radius);
    padding: 10px;
    box-shadow: var(--card-shadow);
    cursor: pointer;
    height: 100%;
    overflow: hidden;
    touch-action: manipulation;
  }
  .mobile-carousel-card:active { box-shadow: var(--card-hover-shadow); }
  .mc-context {
    font-size: 11px; font-weight: 400; color: var(--text-tertiary);
    text-align: center; margin-bottom: 11px;
  }

  .mobile-carousel-card .mc-art-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--art-radius);
    overflow: hidden;
    margin-bottom: 10px;
  }
  .mobile-carousel-card .album-art {
    width: 100%; height: 100%;
    object-fit: cover; display: block;
    background: #d9d1c7;
  }
  .mobile-carousel-card.selected { border: 2px solid var(--connection-highlight); }
  .mobile-carousel-card.selected .mc-art-wrap {
    animation: breathe 3s ease-in-out infinite;
  }
  .mobile-carousel-card.selected .mc-art-wrap:has(.no-art) {
    animation: none;
  }
  .mobile-carousel-card.loading .mc-art-wrap::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(90deg, transparent 25%, rgba(255,255,255,0.3) 50%, transparent 75%);
    background-size: 200% 100%;
    animation: card-shimmer 2.5s ease-in-out infinite;
    pointer-events: none; z-index: 10;
  }
  @keyframes breathe {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.013); }
  }

  .mobile-carousel-card .mc-title {
    font-size: 15px; font-weight: 700; line-height: 1.25; margin-bottom: 3px;
    overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
  }
  .mobile-carousel-card .mc-artist {
    font-size: 13px; font-weight: 300; color: var(--text-secondary); line-height: 1.3;
    overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
  }
  .mobile-carousel-card .mc-dj {
    font-size: 11px; font-weight: 300; color: var(--text-tertiary);
    margin-top: 3px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
  }

  /* ── Source pills ── */
  #mobile-sources {
    flex-shrink: 0;
    padding: 8px 16px 0;
    margin-top: 8px;
  }
  .mobile-source-row {
    display: flex; gap: 8px;
    align-items: center;
    overflow-x: auto; scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .mobile-source-label {
    flex-shrink: 0;
    font-size: 10px; font-weight: 500; letter-spacing: 0.06em;
    text-transform: uppercase; color: var(--text-tertiary);
  }
  .mobile-source-row::-webkit-scrollbar { display: none; }

  .mobile-source-pill {
    flex-shrink: 0;
    font-family: var(--font);
    font-size: 12px;
    font-weight: 400;
    color: var(--text-secondary);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 7px 14px;
    white-space: nowrap;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    text-decoration: none;
  }
  .mobile-source-pill:active {
    background: var(--card-border);
    color: var(--text-primary);
  }

  /* Mobile fade-in animation */
  @keyframes mobileFadeIn {
    from { opacity: 0; transform: translateY(12px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }
  .mobile-animate-in { animation: mobileFadeIn 0.35s ease both; }

  /* Shuffle button feedback */
  #mobile-shuffle-area button {
    transition: transform 0.2s cubic-bezier(0.22, 1, 0.36, 1), background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  }
  #mobile-shuffle-area button.shuffling {
    transform: scale(0.97);
    border-color: var(--connection-highlight);
    color: var(--connection-highlight);
  }

  /* Carousel exit animation */
  @keyframes mobileSlideOut {
    to { opacity: 0; transform: translateY(-10px) scale(0.97); }
  }
  .mobile-animate-out { animation: mobileSlideOut 0.2s ease both; }

  /* Smaller cards on short phones */
  @media (max-height: 750px) {
    .mobile-carousel-item { width: 54vw; }
    .mobile-carousel-item[data-rank="root"] { width: 63vw; }
  }

  /* Theme toggle: adjust for safe area */
  #theme-toggle {
    display: none !important;
  }
}