*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  :root {
    --ink: #0f0f0f;
    --paper: #f5f2eb;
    --muted: #888;
    --accent: #e63b2e;
    --panel-bg: rgba(245,242,235,0.92);
    --panel-border: rgba(0,0,0,0.12);
  }

.pal-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
}
.pal-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.52rem;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.35);
  text-transform: uppercase;
  transition: color 0.15s;
  white-space: nowrap;
}
.pal-wrap:hover .pal-label { color: rgba(255,255,255,0.7); }
.pal-swatch.active + .pal-label { color: rgba(255,255,255,0.9); }

  html,
  body {
    overscroll-behavior: none;
  }

  body {
    font-family: 'Syne', sans-serif;
    background: #0f0f0f;
    color: #fff;
    overflow: hidden;
    height: 100vh;
    height: 100dvh;
    width: 100vw;
    touch-action: manipulation;
  }

  /* CANVAS LAYER */
  #bg-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
  }

  /* UI OVERLAY */
  #ui {
    position: fixed;
    z-index: 10;
    inset: 0;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding-bottom: 1.5rem;
    transition: opacity 0.6s;
  }
  #ui.hidden #panel,
  #ui.hidden .logo {
    opacity: 0;
    pointer-events: none;
  }
  #ui.hidden #title-bar {
    background: transparent;
    pointer-events: none;
  }
  #ui.hidden #top-actions,
  body.fullscreen-active #top-actions {
    opacity: 0.08;
    transform: translateY(-0.35rem);
  }
  #ui.hidden #top-actions:hover,
  #ui.hidden #top-actions:focus-within,
  body.fullscreen-active #top-actions:hover,
  body.fullscreen-active #top-actions:focus-within {
    opacity: 1;
    transform: translateY(0);
  }

  #title-bar {
    position: fixed;
    top: 0; left: 0; right: 0;
    padding: 1.25rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    pointer-events: all;
    background: linear-gradient(to bottom, rgba(0,0,0,0.5), transparent);
  }

  .logo {
    display: flex;
    align-items: baseline;
    gap: 0.1em;
    cursor: default;
    user-select: none;
  }
  .logo-focus {
    font-family: 'Syne', sans-serif;
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #fff;
    text-shadow: 0 0 28px rgba(255,255,255,0.25);
  }
  .logo-flow {
    font-family: 'Syne', sans-serif;
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #e63b2e;
    text-shadow: 0 0 22px rgba(230,59,46,0.55);
  }
  .logo-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #e63b2e;
    margin: 0 0.18em 0.22em;
    box-shadow: 0 0 8px rgba(230,59,46,0.8);
    flex-shrink: 0;
  }

  #top-actions {
    display: flex;
    gap: 0.65rem;
    align-items: center;
    pointer-events: all;
    transition: opacity 0.22s ease, transform 0.22s ease;
  }

  #global-timer {
    position: fixed;
    top: 4.4rem;
    left: 50%;
    z-index: 12;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    transform: translateX(-50%);
    pointer-events: all;
    padding: 0.38rem 0.48rem 0.38rem 0.72rem;
    border: 1px solid rgba(93,255,210,0.2);
    border-radius: 999px;
    background: rgba(9,13,21,0.62);
    color: rgba(255,255,255,0.78);
    font-family: 'DM Mono', monospace;
    box-shadow: 0 14px 34px rgba(0,0,0,0.3);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: opacity 0.18s ease, transform 0.18s ease;
  }
  #global-timer.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateX(-50%) translateY(-0.35rem);
  }
  #global-timer-label {
    font-size: 0.56rem;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.42);
  }
  #global-timer-display {
    min-width: 58px;
    text-align: center;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    color: #fff;
  }
  #global-timer.running #global-timer-display {
    color: #8ff5c2;
  }
  #global-timer.paused #global-timer-display {
    color: #ffd28a;
  }
  #global-timer-toggle,
  #global-timer-reset {
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 999px;
    background: rgba(255,255,255,0.07);
    color: rgba(255,255,255,0.72);
    cursor: pointer;
    font-family: 'DM Mono', monospace;
    font-size: 0.56rem;
    letter-spacing: 0.07em;
    padding: 0.28rem 0.5rem;
  }
  #global-timer-toggle:hover,
  #global-timer-reset:hover {
    background: rgba(255,255,255,0.14);
    color: #fff;
  }
  #global-timer-toggle:disabled,
  #global-timer-reset:disabled {
    cursor: default;
    opacity: 0.42;
  }

  #hide-btn,
  #fullscreen-btn,
  #auto-quality-btn,
  #leaderboard-btn,
  #sound-btn,
  #idea-btn,
  #help-btn {
    font-family: 'DM Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.7);
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    cursor: pointer;
    pointer-events: all;
    transition: background 0.2s, color 0.2s;
  }
  #auto-quality-btn {
    min-width: 112px;
  }
  #hide-btn:hover,
  #fullscreen-btn:hover,
  #auto-quality-btn:hover,
  #leaderboard-btn:hover,
  #sound-btn:hover,
  #idea-btn:hover,
  #help-btn:hover { background: rgba(255,255,255,0.2); color: #fff; }
  #auto-quality-btn.active {
    background: rgba(48,209,88,0.22);
    border-color: rgba(48,209,88,0.45);
    color: #9df0b3;
  }
  #auto-quality-btn.battery {
    background: rgba(255,159,10,0.2);
    border-color: rgba(255,159,10,0.42);
    color: #ffd28a;
  }
  #sound-btn.active {
    background: rgba(93,255,210,0.18);
    border-color: rgba(93,255,210,0.42);
    color: #b6ffeb;
  }
  #auto-quality-btn.crisp {
    background: rgba(93,144,255,0.2);
    border-color: rgba(93,144,255,0.42);
    color: #b8ceff;
  }

  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible,
  .pal-wrap:focus-visible,
  .scene-fav:focus-visible,
  .scene-btn:focus-visible {
    outline: 2px solid rgba(93,255,210,0.85);
    outline-offset: 3px;
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      transition-duration: 0.01ms !important;
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      scroll-behavior: auto !important;
    }
  }

  #idea-btn,
  #help-btn {
    width: 34px;
    min-width: 34px;
    padding-left: 0;
    padding-right: 0;
  }

  #idea-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  #idea-btn svg {
    width: 15px;
    height: 15px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  /* Panel */
  #panel {
    pointer-events: all;
    background: linear-gradient(180deg, rgba(21,28,41,0.82), rgba(13,16,25,0.88));
    backdrop-filter: blur(30px) saturate(145%);
    -webkit-backdrop-filter: blur(30px) saturate(145%);
    border: 1px solid rgba(132,170,220,0.18);
    border-radius: 1rem;
    padding: 1rem 1.15rem;
    width: min(94vw, 1120px);
    box-shadow:
      0 22px 70px rgba(0,0,0,0.48),
      0 1px 0 rgba(255,255,255,0.08) inset;
  }
  #panel-toggle {
    display: none;
  }

  #panel h2 {
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.4);
    margin-bottom: 0.75rem;
    font-family: 'DM Mono', monospace;
  }

  /* SCENE GRID */
  .scene-rail {
    position: relative;
  }
  #scene-grid {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 0.6rem;
    overflow-x: auto;
    padding-bottom: 0.15rem;
    padding-right: 3.1rem;
    scrollbar-width: none;
  }
  #scene-grid::-webkit-scrollbar { display: none; }
  .scene-scroll-btn {
    position: absolute;
    top: 50%;
    right: 0.15rem;
    transform: translateY(-50%);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.14);
    background: rgba(13,18,29,0.78);
    color: rgba(255,255,255,0.72);
    font-family: 'DM Mono', monospace;
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    pointer-events: all;
    box-shadow: 0 10px 26px rgba(0,0,0,0.34);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: background 0.15s, color 0.15s, opacity 0.15s, transform 0.15s;
  }
  .scene-scroll-btn:hover {
    background: rgba(93,255,210,0.18);
    color: #fff;
    transform: translateY(-50%) translateX(2px);
  }
  .scene-scroll-btn.hidden {
    opacity: 0;
    pointer-events: none;
  }

  .scene-btn {
    position: relative;
    min-height: 108px;
    min-width: 118px;
    flex: 0 0 118px;
    background: rgba(255,255,255,0.045);
    border: 1px solid rgba(255,255,255,0.09);
    border-radius: 0.7rem;
    padding: 0.62rem 0.5rem 0.58rem;
    cursor: pointer;
    text-align: center;
    transition: background 0.15s, border-color 0.15s, transform 0.12s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 0.48rem;
    color: rgba(255,255,255,0.7);
    overflow: hidden;
  }
  .scene-btn:hover { background: rgba(255,255,255,0.12); transform: translateY(-1px); }
  .scene-btn.active {
    border-color: rgba(93,255,210,0.72);
    background: radial-gradient(circle at 30% 20%, rgba(93,255,210,0.24), rgba(55,134,255,0.12) 55%, rgba(255,255,255,0.04));
    box-shadow: 0 0 28px rgba(69,202,255,0.22), 0 0 0 1px rgba(76,132,255,0.32) inset;
    color: #fff;
  }
  .scene-preview {
    position: relative;
    width: 76px;
    height: 42px;
    display: grid;
    place-items: center;
    overflow: hidden;
    flex: 0 0 auto;
    border-radius: 0.48rem;
    border: 1px solid rgba(255,255,255,0.12);
    background: linear-gradient(135deg, rgba(15,19,30,0.96), rgba(28,35,52,0.72));
    box-shadow: 0 10px 24px rgba(0,0,0,0.2), 0 1px 0 rgba(255,255,255,0.08) inset;
  }
  .scene-preview::before,
  .scene-preview::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: none;
  }
  .scene-preview::before {
    opacity: 0.88;
    transform-origin: center;
  }
  .scene-preview::after {
    opacity: 0.72;
  }
  .scene-preview canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
  }
  .scene-btn:hover .scene-preview,
  .scene-btn.active .scene-preview {
    box-shadow: 0 12px 26px rgba(0,0,0,0.22), 0 0 22px rgba(93,255,210,0.16), 0 1px 0 rgba(255,255,255,0.1) inset;
  }
  .scene-btn.active .scene-preview {
    border-color: rgba(93,255,210,0.62);
    transform: scale(1.06);
  }
  .scene-btn .label {
    width: 100%;
    font-size: 0.65rem;
    font-family: 'DM Mono', monospace;
    letter-spacing: 0.06em;
    line-height: 1.25;
    text-align: center;
    overflow-wrap: anywhere;
  }
  .scene-fav {
    position: absolute;
    top: 0.38rem;
    right: 0.38rem;
    z-index: 4;
    width: 22px;
    height: 22px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 999px;
    background: rgba(0,0,0,0.22);
    color: rgba(255,255,255,0.34);
    font-size: 0.7rem;
    line-height: 1;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.15s;
  }
  .scene-fav:hover {
    background: rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.85);
  }
  .scene-fav.active {
    border-color: rgba(255,209,102,0.58);
    color: #ffd166;
    background: rgba(255,209,102,0.14);
  }

  /*  CONTROLS  */
  #controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
  align-items: stretch;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 0.72rem;
}

  .ctrl {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 140px;
  background: rgba(255,255,255,0.035);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.8rem;
  padding: 0.75rem 0.9rem;
}

.ctrl.presets {
  grid-column: 1 / -1;
  align-items: flex-start;
  margin-top: 0.1rem;
}

.ctrl:nth-child(1) { grid-column: 1 / 2; }
.ctrl:nth-child(2) { grid-column: 2 / 3; }
.ctrl:nth-child(3) { grid-column: 3 / 5; }

  .ctrl label {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.4);
    white-space: nowrap;
  }

  .ctrl input[type=range] {
    flex: 1;
    min-width: 0;
    -webkit-appearance: none;
    height: 3px;
    background: rgba(255,255,255,0.15);
    border-radius: 99px;
    outline: none;
  }
  .ctrl input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px; height: 14px;
    background: #65e7a8;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 14px rgba(101,231,168,0.55);
  }

  .palette-row {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.ctrl:nth-child(3) {
  border-color: rgba(255,168,28,0.38);
}

  .preset-row {
    display: flex;
    gap: 0.55rem;
    align-items: center;
    flex-wrap: wrap;
  }
  .preset-row.shell {
    justify-content: center;
    width: 100%;
    gap: 0.75rem;
  }
  .preset-row.slots {
    justify-content: center;
    gap: 0.8rem;
  }
  .preset-slot {
    display: flex;
    gap: 0.35rem;
    align-items: center;
  }
  .preset-slot:nth-child(2) {
    gap: 0.62rem;
  }
  .preset-btn,
  .preset-edit,
  .preset-share,
  .preset-random {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.06em;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.68);
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
  }
  .preset-btn {
    padding: 0.35rem 0.8rem;
    min-width: 92px;
  }
  .preset-edit,
  .preset-share,
  .preset-random {
    padding: 0.35rem 0.5rem;
    min-width: 34px;
  }
  .preset-btn:hover,
  .preset-edit:hover,
  .preset-share:hover,
  .preset-random:hover {
    background: rgba(255,255,255,0.14);
    color: #fff;
  }
  .preset-random {
    border-color: rgba(93,255,210,0.28);
    color: rgba(178,255,234,0.78);
    background: rgba(93,255,210,0.08);
    box-shadow: 0 0 18px rgba(93,255,210,0.08);
    margin-left: 0.28rem;
    padding-inline: 0.9rem;
  }
  .preset-random::before,
  .preset-random::after {
    content: "";
    display: inline-block;
    width: 3px;
    height: 3px;
    margin: 0 0.42rem 0.1rem;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.65;
  }
  .preset-btn.active {
    border-color: rgba(93,144,255,0.62);
    background: rgba(93,144,255,0.14);
    color: #fff;
  }
  #scene-tooltip {
    position: fixed;
    z-index: 18;
    display: none;
    max-width: 240px;
    pointer-events: none;
    font-family: 'DM Mono', monospace;
    font-size: 0.62rem;
    line-height: 1.45;
    letter-spacing: 0.04em;
    color: rgba(255,255,255,0.78);
    background: rgba(9,12,18,0.9);
    border: 1px solid rgba(93,255,210,0.22);
    border-radius: 0.6rem;
    padding: 0.58rem 0.7rem;
    box-shadow: 0 14px 34px rgba(0,0,0,0.36);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }
  #scene-tooltip strong {
    display: block;
    margin-bottom: 0.2rem;
    color: rgba(255,255,255,0.92);
    text-transform: uppercase;
  }
  .pal-swatch {
    width: 22px; height: 22px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform 0.15s, border-color 0.15s;
  }
  .pal-swatch:hover { transform: scale(1.15); }
  .pal-swatch.active { border-color: #fff; transform: scale(1.15); }

  /* Hint text */
  #hint {
    position: fixed;
    bottom: 1rem;
    right: 1.5rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.62rem;
    color: rgba(255,255,255,0.25);
    letter-spacing: 0.06em;
    pointer-events: none;
    z-index: 11;
  }

#qa-badge {
  position: fixed;
  top: 4.4rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 16;
  display: none;
  max-width: 90vw;
  font-family: 'DM Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.09em;
  color: rgba(255,255,255,0.76);
  background: rgba(0,0,0,0.45);
  border: 1px solid rgba(93,255,210,0.22);
  border-radius: 999px;
  padding: 0.34rem 0.78rem;
  pointer-events: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
#qa-badge.visible { display: block; }

  /* TIMER */
  #timer-row {
    display: flex;
    gap: 0.4rem;
    align-items: center;
    flex-wrap: nowrap;
    justify-content: flex-end;
    padding-left: 0.75rem;
    border-left: 1px solid rgba(255,255,255,0.1);
    margin-left: auto;
  }
  #timer-row label {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.4);
    white-space: nowrap;
  }
  #timer-display {
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    color: rgba(255,255,255,0.9);
    letter-spacing: 0.1em;
    min-width: 52px;
    text-align: right;
    padding: 0 0.1rem;
  }
  #timer-custom-mins {
    width: 64px;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.04em;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.86);
    padding: 0.36rem 0.55rem;
    border-radius: 999px;
    outline: none;
    text-align: center;
  }
  #timer-custom-mins::placeholder {
    color: rgba(255,255,255,0.35);
  }
  #timer-custom-mins:focus {
    border-color: rgba(93,255,210,0.55);
  }
  #timer-display.running { color: #65e7a8; }
  #timer-begin,
  #timer-reset {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.5);
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
  }
  #timer-begin:hover,
  #timer-reset:hover { background: rgba(255,255,255,0.1); color: #fff; }
  #timer-begin:disabled {
    opacity: 0.4;
    cursor: default;
  }

  @media (max-width: 720px) {
    #title-bar {
      align-items: stretch;
      flex-direction: column;
      gap: 0.48rem;
      padding: calc(0.75rem + env(safe-area-inset-top)) 0.75rem 0.6rem;
    }
    .logo {
      align-self: flex-start;
    }
    .logo-focus,
    .logo-flow {
      font-size: 1.5rem;
      letter-spacing: 0.045em;
    }
    .logo-dot {
      width: 7.5px;
      height: 7.5px;
      margin-bottom: 0.16em;
    }
    #top-actions {
      width: 100%;
      max-width: 100%;
      flex-wrap: nowrap;
      justify-content: flex-start;
      overflow-x: auto;
      scrollbar-width: none;
      gap: 0.35rem;
      padding-bottom: 0.12rem;
    }
    #top-actions::-webkit-scrollbar {
      display: none;
    }
    #global-timer {
      top: calc(5.85rem + env(safe-area-inset-top));
      max-width: calc(100vw - 1.1rem);
      gap: 0.32rem;
      padding: 0.32rem 0.38rem 0.32rem 0.52rem;
    }
    #global-timer-label {
      display: none;
    }
    #global-timer-display {
      min-width: 52px;
      font-size: 0.68rem;
    }
    #global-timer-toggle,
    #global-timer-reset {
      font-size: 0.5rem;
      padding: 0.24rem 0.4rem;
    }
    #hide-btn,
    #fullscreen-btn,
    #auto-quality-btn,
    #leaderboard-btn,
    #sound-btn,
    #idea-btn,
    #help-btn {
      font-size: 0.56rem;
      letter-spacing: 0.05em;
      padding: 0.32rem 0.5rem;
      flex: 0 0 auto;
    }
    #auto-quality-btn {
      min-width: 54px;
    }
    #idea-btn,
    #help-btn {
      width: 30px;
      min-width: 30px;
    }
    #ui {
      padding: 0 0.55rem calc(0.55rem + env(safe-area-inset-bottom));
    }
    #panel {
      width: 100%;
      max-height: min(46dvh, 430px);
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
      overscroll-behavior: contain;
      border-radius: 0.85rem;
      padding: 1rem 0.75rem 0.75rem;
      transition: max-height 0.22s ease, transform 0.22s ease;
    }
    body.panel-expanded #panel {
      max-height: min(78dvh, 680px);
    }
    #panel-toggle {
      display: flex;
      position: sticky;
      top: -0.35rem;
      z-index: 3;
      width: 100%;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      margin: -0.4rem 0 0.55rem;
      border: 0;
      background: transparent;
      color: rgba(255,255,255,0.42);
      font-family: 'DM Mono', monospace;
      font-size: 0.52rem;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      cursor: pointer;
      touch-action: none;
    }
    #panel-toggle::before {
      content: "";
      width: 44px;
      height: 4px;
      border-radius: 999px;
      background: rgba(255,255,255,0.22);
      box-shadow: 0 0 14px rgba(93,255,210,0.1);
    }
    #panel h2 {
      font-size: 0.56rem;
      margin-bottom: 0.55rem;
    }
    #scene-grid {
      gap: 0.45rem;
      padding-right: 2.3rem;
    }
    .scene-btn {
      min-width: 88px;
      flex-basis: 88px;
      min-height: 94px;
      padding: 0.55rem 0.4rem;
      border-radius: 0.58rem;
    }
    .scene-preview {
      width: 60px;
      height: 34px;
      border-radius: 0.42rem;
    }
    .scene-btn .label {
      font-size: 0.55rem;
      line-height: 1.2;
    }
    .scene-scroll-btn {
      width: 32px;
      height: 32px;
      right: 0;
      font-size: 1.05rem;
    }
    #controls {
      grid-template-columns: 1fr;
      gap: 0.5rem;
      padding-top: 0.55rem;
    }
    .ctrl:nth-child(1),
    .ctrl:nth-child(2),
    .ctrl:nth-child(3) {
      grid-column: 1 / -1;
    }
    .ctrl {
      min-width: 0;
      padding: 0.62rem;
      gap: 0.45rem;
      flex-wrap: wrap;
      border-radius: 0.68rem;
    }
    .ctrl label {
      font-size: 0.56rem;
    }
    .ctrl input[type=range] {
      min-width: 112px;
    }
    .palette-row {
      width: 100%;
      max-width: 100%;
      flex-wrap: nowrap;
      overflow-x: auto;
      padding-bottom: 0.2rem;
      scrollbar-width: none;
    }
    .palette-row::-webkit-scrollbar {
      display: none;
    }
    .pal-wrap {
      min-width: 38px;
      gap: 0.25rem;
    }
    .pal-swatch {
      width: 20px;
      height: 20px;
    }
    .pal-label {
      font-size: 0.45rem;
      letter-spacing: 0.04em;
    }
    .preset-row.shell {
      align-items: flex-start;
      justify-content: flex-start;
      gap: 0.5rem;
    }
    .preset-row.slots {
      justify-content: flex-start;
      gap: 0.45rem;
    }
    .preset-slot {
      gap: 0.25rem;
    }
    .preset-slot:nth-child(2) {
      gap: 0.34rem;
    }
    .preset-btn {
      min-width: 78px;
      padding: 0.32rem 0.58rem;
      font-size: 0.55rem;
    }
    .preset-edit,
    .preset-share,
    .preset-random {
      min-width: 30px;
      padding: 0.32rem 0.45rem;
      font-size: 0.55rem;
      margin-left: 0.05rem;
    }
    .preset-random::before,
    .preset-random::after {
      margin-inline: 0.22rem;
    }
    #timer-row {
      order: 3;
      width: 100%;
      padding-left: 0;
      border-left: 0;
      justify-content: flex-start;
      flex-wrap: wrap;
      margin-left: 0;
      gap: 0.35rem;
    }
    #timer-row label,
    #timer-custom-mins,
    #timer-begin,
    #timer-reset {
      font-size: 0.55rem;
    }
    #timer-custom-mins {
      width: 56px;
      padding: 0.32rem 0.45rem;
    }
    #timer-display {
      min-width: 48px;
      font-size: 0.62rem;
      text-align: left;
    }
    .preset-share { order: 2; }
    .preset-random { order: 2; }
    #hint {
      display: none;
    }
    #qa-badge {
      top: calc(3.15rem + env(safe-area-inset-top));
    }
    #help-overlay {
      padding: calc(0.8rem + env(safe-area-inset-top)) 0.8rem calc(0.8rem + env(safe-area-inset-bottom));
    }
    #help-box {
      max-height: 80dvh;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }
  }

  @media (max-width: 420px) {
    #top-actions {
      max-width: 100%;
    }
    #panel {
      max-height: min(62dvh, 560px);
    }
    .scene-btn {
      min-width: 82px;
      flex-basis: 82px;
    }
    .scene-preview {
      width: 54px;
      height: 32px;
    }
    .ctrl input[type=range] {
      min-width: 92px;
    }
  }

  @media (max-width: 360px) {
    #title-bar {
      padding-left: 0.55rem;
      padding-right: 0.55rem;
    }
    .logo-focus,
    .logo-flow {
      font-size: 1.29rem;
    }
    #top-actions {
      max-width: 100%;
    }
    #hide-btn,
    #fullscreen-btn,
    #auto-quality-btn,
    #leaderboard-btn {
      font-size: 0.52rem;
      padding: 0.28rem 0.42rem;
    }
    #sound-btn {
      font-size: 0.52rem;
      padding: 0.28rem 0.42rem;
    }
    #auto-quality-btn {
      min-width: 48px;
    }
  }

  @media (max-height: 640px) and (max-width: 720px) {
    #panel {
      max-height: 70dvh;
    }
    .scene-btn {
      min-height: 86px;
    }
  }

  /* ALERT OVERLAY */
  #timer-alert {
    position: fixed;
    inset: 0;
    z-index: 20;
    display: none;
    align-items: center;
    justify-content: center;
    pointer-events: none;
  }
  #timer-alert.show { display: flex; }
  #timer-alert-box {
    font-family: 'DM Mono', monospace;
    font-size: 1.1rem;
    letter-spacing: 0.12em;
    color: #fff;
    background: rgba(230,59,46,0.92);
    border-radius: 1rem;
    padding: 1.4rem 2.4rem;
    text-align: center;
    animation: alertPulse 0.5s ease-in-out 2;
  }
  @keyframes alertPulse {
    0%,100% { transform: scale(1); }
    50%      { transform: scale(1.06); }
  }

  .modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 30;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: rgba(0,0,0,0.42);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    pointer-events: all;
  }
  .modal-overlay.show { display: flex; }

  #leaderboard-box {
    width: min(92vw, 500px);
    background: rgba(12,14,20,0.92);
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 0.9rem;
    box-shadow: 0 18px 60px rgba(0,0,0,0.5);
    padding: 1.25rem;
    color: rgba(255,255,255,0.82);
  }
  #leaderboard-box h3 {
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: rgba(255,255,255,0.56);
    text-transform: uppercase;
    margin-bottom: 0.85rem;
  }
  #leaderboard-list {
    display: grid;
    gap: 0.55rem;
  }
  .usage-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.55rem;
    margin-bottom: 0.75rem;
  }
  .usage-card {
    background: rgba(255,255,255,0.045);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 0.7rem;
    padding: 0.65rem;
    font-family: 'DM Mono', monospace;
  }
  .usage-card span {
    display: block;
    margin-bottom: 0.28rem;
    font-size: 0.55rem;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.42);
  }
  .usage-card strong {
    display: block;
    font-size: 0.72rem;
    color: rgba(255,255,255,0.88);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .leaderboard-row {
    display: grid;
    grid-template-columns: 26px minmax(0, 1fr) auto;
    gap: 0.7rem;
    align-items: center;
    font-family: 'DM Mono', monospace;
    font-size: 0.68rem;
    color: rgba(255,255,255,0.74);
    background: rgba(255,255,255,0.045);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 0.7rem;
    padding: 0.62rem 0.7rem;
  }
  .leaderboard-rank {
    color: rgba(93,255,210,0.78);
  }
  .leaderboard-name {
    min-width: 0;
  }
  .leaderboard-name span {
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .leaderboard-bar {
    height: 3px;
    margin-top: 0.38rem;
    border-radius: 999px;
    background: rgba(255,255,255,0.1);
    overflow: hidden;
  }
  .leaderboard-bar i {
    display: block;
    height: 100%;
    width: var(--usage-width, 0%);
    border-radius: inherit;
    background: linear-gradient(90deg, rgba(93,255,210,0.86), rgba(93,144,255,0.78));
  }
  .leaderboard-time {
    color: rgba(255,255,255,0.9);
    white-space: nowrap;
  }
  .leaderboard-empty {
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    line-height: 1.5;
    color: rgba(255,255,255,0.58);
    background: rgba(255,255,255,0.045);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 0.7rem;
    padding: 0.85rem;
  }
  #leaderboard-close {
    margin-top: 1rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.14);
    color: rgba(255,255,255,0.72);
    padding: 0.42rem 0.9rem;
    border-radius: 999px;
    cursor: pointer;
  }
  #leaderboard-close:hover {
    background: rgba(255,255,255,0.14);
    color: #fff;
  }

  @media (max-width: 720px) {
    .modal-overlay {
      padding: calc(0.8rem + env(safe-area-inset-top)) 0.8rem calc(0.8rem + env(safe-area-inset-bottom));
    }
    #leaderboard-box {
      max-height: 80dvh;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }
    .leaderboard-row {
      grid-template-columns: 22px minmax(0, 1fr);
    }
    .leaderboard-time {
      grid-column: 2 / 3;
    }
    .usage-summary {
      grid-template-columns: 1fr;
    }
  }

  #sound-box {
    width: min(92vw, 460px);
    background: rgba(12,14,20,0.92);
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 0.9rem;
    box-shadow: 0 18px 60px rgba(0,0,0,0.5);
    padding: 1.25rem;
    color: rgba(255,255,255,0.82);
  }
  #sound-box h3 {
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: rgba(255,255,255,0.56);
    text-transform: uppercase;
    margin-bottom: 0.85rem;
  }
  .sound-list {
    display: grid;
    gap: 0.55rem;
  }
  .sound-volume {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) 42px;
    gap: 0.65rem;
    align-items: center;
    margin-top: 0.85rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.5);
  }
  #sound-volume {
    width: 100%;
    -webkit-appearance: none;
    height: 3px;
    background: rgba(255,255,255,0.15);
    border-radius: 99px;
    outline: none;
  }
  #sound-volume::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: #65e7a8;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 14px rgba(101,231,168,0.55);
  }
  #sound-volume-value {
    text-align: right;
    color: rgba(255,255,255,0.62);
  }
  .sound-option {
    display: grid;
    gap: 0.24rem;
    width: 100%;
    text-align: left;
    font-family: 'DM Mono', monospace;
    background: rgba(255,255,255,0.045);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 0.7rem;
    color: rgba(255,255,255,0.72);
    padding: 0.72rem 0.78rem;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
  }
  .sound-option strong {
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.88);
    text-transform: uppercase;
  }
  .sound-option span {
    font-size: 0.62rem;
    line-height: 1.45;
    color: rgba(255,255,255,0.48);
  }
  .sound-option:hover,
  .sound-option.active {
    background: rgba(93,255,210,0.1);
    border-color: rgba(93,255,210,0.34);
  }
  #sound-status {
    min-height: 1.1rem;
    margin-top: 0.65rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    color: rgba(101,231,168,0.78);
  }
  #sound-close {
    margin-top: 0.85rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.14);
    color: rgba(255,255,255,0.72);
    padding: 0.42rem 0.9rem;
    border-radius: 999px;
    cursor: pointer;
  }
  #sound-close:hover {
    background: rgba(255,255,255,0.14);
    color: #fff;
  }

  #rename-box {
    width: min(92vw, 390px);
    background: rgba(12,14,20,0.92);
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 0.9rem;
    box-shadow: 0 18px 60px rgba(0,0,0,0.5);
    padding: 1.15rem;
    color: rgba(255,255,255,0.82);
  }
  #rename-box h3 {
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: rgba(255,255,255,0.56);
    text-transform: uppercase;
    margin-bottom: 0.85rem;
  }
  #rename-input {
    width: 100%;
    font-family: 'DM Mono', monospace;
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    color: rgba(255,255,255,0.9);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.13);
    border-radius: 0.72rem;
    outline: none;
    padding: 0.72rem 0.78rem;
  }
  #rename-input:focus {
    border-color: rgba(93,255,210,0.48);
    box-shadow: 0 0 0 1px rgba(93,255,210,0.16);
  }
  .rename-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.55rem;
    margin-top: 0.85rem;
  }
  .rename-actions button {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.14);
    color: rgba(255,255,255,0.72);
    padding: 0.42rem 0.9rem;
    border-radius: 999px;
    cursor: pointer;
  }
  #rename-save {
    border-color: rgba(93,255,210,0.36);
    color: rgba(169,255,231,0.88);
  }
  @media (max-width: 720px) {
    #sound-box {
      max-height: 80dvh;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }
    #rename-box {
      max-height: 80dvh;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }
  }

  #help-box {
    width: min(92vw, 420px);
    background: rgba(12,14,20,0.9);
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 0.9rem;
    box-shadow: 0 18px 60px rgba(0,0,0,0.5);
    padding: 1.25rem;
    color: rgba(255,255,255,0.82);
  }
  #help-box h3 {
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    margin-bottom: 0.9rem;
  }
  .help-list {
    display: grid;
    gap: 0.55rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    line-height: 1.45;
  }
  .help-list div {
    display: grid;
    grid-template-columns: 82px 1fr;
    gap: 0.8rem;
    align-items: baseline;
  }
  .help-list span:first-child {
    color: rgba(255,255,255,0.42);
    white-space: nowrap;
  }
  .ctrl-value {
    min-width: 44px;
    max-width: 54px;
    font-family: 'DM Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    color: rgba(255,255,255,0.48);
    text-align: right;
    white-space: normal;
    overflow-wrap: anywhere;
    line-height: 1.15;
  }

  @media (max-width: 720px) {
    .ctrl-value {
      margin-left: auto;
      max-width: 48px;
      font-size: 0.55rem;
      text-align: right;
    }
  }
  #help-close {
    margin-top: 1rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.14);
    color: rgba(255,255,255,0.72);
    padding: 0.42rem 0.9rem;
    border-radius: 999px;
    cursor: pointer;
  }
  #help-close:hover {
    background: rgba(255,255,255,0.14);
    color: #fff;
  }