:root {
    --bg: #0a0a0c;
    --bg-elev: #131318;
    --ink: #e8e6df;
    --ink-dim: #8a8780;
    --ink-faint: #4a4842;
    --rule: #1f1e23;
    --accent: #d94f3a;
    --accent-warm: #f0a868;
    --serif: 'Fraunces', Georgia, serif;
    --mono: 'JetBrains Mono', 'SF Mono', monospace;
  }

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

  html, body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--serif);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
  }

  body {
    background-image:
      radial-gradient(ellipse 80% 50% at 50% 40%, rgba(217,79,58,0.04), transparent 60%),
      radial-gradient(ellipse 60% 80% at 70% 80%, rgba(240,168,104,0.03), transparent 70%);
  }

  #canvas-wrap {
    position: fixed;
    inset: 0;
    z-index: 1;
  }

  canvas { display: block; }

  /* Grain overlay */
  body::after {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    opacity: 0.06;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/><feColorMatrix values='0 0 0 0 1   0 0 0 0 1   0 0 0 0 1   0 0 0 0.4 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  }

  /* Vignette */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 3;
    background: radial-gradient(ellipse at center, transparent 30%, rgba(0,0,0,0.5) 100%);
  }

  header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 10;
    padding: 28px 40px 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    pointer-events: none;
  }

  .masthead {
    pointer-events: auto;
  }

  .kicker {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-dim);
    margin-bottom: 6px;
  }

  .kicker .dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    margin-right: 8px;
    transform: translateY(-1px);
    animation: pulse 2.4s ease-in-out infinite;
  }

  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
  }

  h1 {
    font-family: var(--serif);
    font-weight: 300;
    font-size: 38px;
    line-height: 1;
    letter-spacing: -0.02em;
    font-variation-settings: "opsz" 144;
  }

  h1 em {
    font-style: italic;
    color: var(--accent-warm);
    font-weight: 400;
  }

  .byline {
    margin-top: 8px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    color: var(--ink-faint);
  }

  .meta {
    text-align: right;
    pointer-events: auto;
  }

  .meta .label {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink-faint);
  }

  .meta .val {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-dim);
    margin-top: 2px;
  }

  /* Side panel */
  aside.panel {
    position: fixed;
    top: 50%;
    right: 32px;
    transform: translateY(-50%);
    width: 290px;
    z-index: 10;
    padding: 24px 22px;
    background: rgba(19,19,24,0.78);
    backdrop-filter: blur(12px) saturate(120%);
    -webkit-backdrop-filter: blur(12px) saturate(120%);
    border: 1px solid var(--rule);
    border-radius: 2px;
  }

  aside.panel::before {
    content: '';
    position: absolute;
    left: -1px;
    top: 16px;
    width: 2px;
    height: 32px;
    background: var(--accent);
  }

  .panel-title {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink-dim);
    margin-bottom: 18px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
  }

  .panel-title .n {
    color: var(--ink-faint);
    font-size: 9px;
  }

  .control {
    margin-bottom: 14px;
  }

  .control:last-child { margin-bottom: 0; }

  .control-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 4px;
  }

  .control-label {
    font-family: var(--serif);
    font-size: 13px;
    font-style: italic;
    color: var(--ink);
  }

  .control-label .sub {
    font-family: var(--mono);
    font-style: normal;
    font-size: 9px;
    color: var(--ink-faint);
    margin-left: 6px;
    letter-spacing: 0.1em;
  }

  .control-value {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--accent-warm);
    font-variant-numeric: tabular-nums;
  }

  input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 1px;
    background: var(--ink-faint);
    outline: none;
    cursor: ew-resize;
  }

  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 10px;
    height: 10px;
    background: var(--ink);
    border-radius: 50%;
    border: 2px solid var(--bg);
    transition: transform 0.15s, background 0.15s;
  }

  input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--accent-warm);
    transform: scale(1.3);
  }

  input[type="range"]::-moz-range-thumb {
    width: 10px;
    height: 10px;
    background: var(--ink);
    border-radius: 50%;
    border: 2px solid var(--bg);
    cursor: ew-resize;
  }

  .divider {
    height: 1px;
    background: var(--rule);
    margin: 18px 0;
  }

  .presets {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    margin-top: 6px;
  }

  .preset-btn {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: transparent;
    color: var(--ink-dim);
    border: 1px solid var(--rule);
    padding: 7px 4px;
    cursor: pointer;
    transition: all 0.15s;
  }

  .preset-btn:hover {
    color: var(--ink);
    border-color: var(--ink-faint);
    background: rgba(217,79,58,0.05);
  }

  .preset-btn.active {
    color: var(--accent);
    border-color: var(--accent);
  }

  /* Footer essay */
  .essay {
    position: fixed;
    bottom: 28px;
    left: 40px;
    max-width: 380px;
    z-index: 10;
  }

  .essay .label {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin-bottom: 8px;
  }

  .essay p {
    font-family: var(--serif);
    font-size: 13px;
    line-height: 1.55;
    color: var(--ink-dim);
    font-weight: 300;
  }

  .essay p em {
    color: var(--ink);
    font-style: italic;
  }

  .essay p .accent {
    color: var(--accent-warm);
    font-style: italic;
  }

  /* Bottom right readout */
  .readout {
    position: fixed;
    bottom: 28px;
    right: 32px;
    z-index: 10;
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-faint);
    text-align: right;
    letter-spacing: 0.08em;
  }

  .readout .live {
    color: var(--accent);
  }

  /* Bottom action bar */
  .actions {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 12px;
  }

  .action-btn {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    background: transparent;
    color: var(--ink-dim);
    border: 1px solid var(--rule);
    padding: 10px 16px;
    cursor: pointer;
    transition: all 0.2s;
    backdrop-filter: blur(6px);
    background: rgba(19,19,24,0.5);
  }

  .action-btn:hover {
    color: var(--ink);
    border-color: var(--accent);
  }

  .action-btn.playing {
    color: var(--accent);
    border-color: var(--accent);
  }

  @media (max-width: 900px) {
    aside.panel {
      width: calc(100% - 32px);
      right: 16px;
      left: 16px;
      top: auto;
      bottom: 80px;
      transform: none;
    }
    .essay { display: none; }
    h1 { font-size: 26px; }
    header { padding: 20px 20px 0 20px; }
    .meta { display: none; }
  }


  #canvas-wrap canvas {
    width: 100%;
    height: 100%;
    display: block;
  }