:root {
  --ink: #0d0c14;
  --panel: rgba(18, 17, 27, 0.72);
  --panel-solid: #14131e;
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #ece9f2;
  --text-dim: #a39fb4;
  --text-faint: #726e85;
  --accent: #ff7a59;
  --accent-2: #71b6ff;
  --radius: 16px;
  --shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.7);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--ink);
  color: var(--text);
  font-family: "Space Grotesk", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

body { position: fixed; inset: 0; }

#stage {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
  touch-action: none;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 50;
  background: var(--accent);
  color: #20120c;
  padding: 10px 16px;
  border-radius: 0 0 10px 0;
  font-weight: 600;
  text-decoration: none;
}
.skip:focus { left: 0; }

/* ---------- Brand bar ---------- */
.brandbar {
  position: fixed;
  top: max(18px, env(safe-area-inset-top));
  left: 22px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  pointer-events: none;
}
.mark {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: rgba(13, 12, 20, 0.55);
  border: 1px solid var(--line);
  border-radius: 12px;
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  color: var(--accent);
}
.brandtext { display: flex; flex-direction: column; line-height: 1.1; }
.brandname {
  font-family: "Fraunces", serif;
  font-weight: 500;
  font-size: 21px;
  letter-spacing: 0.2px;
}
.brandtag {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.panel-toggle {
  pointer-events: auto;
  margin-left: 6px;
  display: none;
}
.ghost-btn {
  background: rgba(13, 12, 20, 0.55);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  padding: 9px 13px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.show-when-closed { display: none; }
body.panel-hidden .show-when-open { display: none; }
body.panel-hidden .show-when-closed { display: inline; }

/* ---------- Seed pill ---------- */
.seedpill {
  position: fixed;
  top: max(22px, env(safe-area-inset-top));
  right: 22px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 9px;
  background: rgba(13, 12, 20, 0.6);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 15px 8px 12px;
  font-size: 13px;
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
}
.seedpill .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(255, 122, 89, 0.55);
  animation: pulse 2.4s var(--ease) infinite;
}
.seedpill.paused .dot { background: var(--text-faint); animation: none; box-shadow: none; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 122, 89, 0.5); }
  70% { box-shadow: 0 0 0 9px rgba(255, 122, 89, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 122, 89, 0); }
}
.seed-label { color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.12em; font-size: 10.5px; }
.seed-value { font-family: "IBM Plex Mono", monospace; letter-spacing: 0.04em; }

/* ---------- Panel ---------- */
.panel {
  position: fixed;
  top: 86px;
  left: 22px;
  z-index: 15;
  width: 332px;
  max-height: calc(100dvh - 110px);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px) saturate(1.5);
  -webkit-backdrop-filter: blur(22px) saturate(1.5);
  padding: 6px 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
  transition: transform 0.45s var(--ease), opacity 0.35s var(--ease);
}
.panel::-webkit-scrollbar { width: 8px; }
.panel::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 8px; }
body.panel-hidden .panel {
  transform: translateX(calc(-100% - 40px));
  opacity: 0;
  pointer-events: none;
}

.panel-section { padding: 16px 20px; border-bottom: 1px solid var(--line); }
.panel-section:last-of-type { border-bottom: none; }

.intro h1 {
  font-family: "Fraunces", serif;
  font-weight: 500;
  font-size: 24px;
  margin: 2px 0 8px;
  letter-spacing: 0.2px;
}
.intro p { margin: 0; color: var(--text-dim); font-size: 13.5px; line-height: 1.55; }

.group-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 12px;
}

/* Palettes */
.swatches { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.swatch {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  border-radius: 11px;
  cursor: pointer;
  text-align: left;
  color: var(--text);
  font: inherit;
  transition: border-color 0.2s, background 0.2s, transform 0.15s var(--ease);
}
.swatch:hover { border-color: var(--line-strong); transform: translateY(-1px); }
.swatch[aria-checked="true"] {
  border-color: var(--accent);
  background: rgba(255, 122, 89, 0.10);
}
.swatch .bar { height: 14px; border-radius: 5px; }
.swatch .nm { font-size: 12px; color: var(--text-dim); }
.swatch[aria-checked="true"] .nm { color: var(--text); }

/* Segmented */
.segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 4px;
}
.segmented button {
  border: none;
  background: transparent;
  color: var(--text-dim);
  font: inherit;
  font-size: 12.5px;
  padding: 8px 6px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.segmented button:hover { color: var(--text); }
.segmented button[aria-checked="true"] {
  background: rgba(255, 255, 255, 0.10);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

/* Sliders */
.sliders { display: grid; gap: 18px; }
.slider-row label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 12.5px;
  color: var(--text-dim);
  margin-bottom: 9px;
  letter-spacing: 0.02em;
}
.slider-row .val {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--text);
}
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  background-size: var(--fill, 50%) 100%;
  background-repeat: no-repeat;
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track { height: 4px; border-radius: 999px; }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 17px; height: 17px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.2);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
  margin-top: -6.5px;
}
input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  border: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
}
input[type="range"]:focus-visible { box-shadow: 0 0 0 3px rgba(113, 182, 255, 0.4); }
.slider-row { --fill: 50%; }
input[type="range"] { background-size: var(--fill) 100%; }

/* Switch */
.toggles .switch {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch .track {
  position: relative;
  flex: none;
  width: 42px; height: 24px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid var(--line);
  transition: background 0.25s;
}
.switch .track::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.25s var(--ease);
}
.switch input:checked + .track { background: var(--accent); }
.switch input:checked + .track::after { transform: translateX(18px); }
.switch input:focus-visible + .track { box-shadow: 0 0 0 3px rgba(255, 122, 89, 0.35); }
.switch-label { font-size: 13.5px; display: flex; flex-direction: column; }
.switch-label small { color: var(--text-faint); font-size: 11.5px; }

/* Actions */
.actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  padding: 11px 12px;
  border-radius: 11px;
  cursor: pointer;
  transition: background 0.18s, border-color 0.18s, transform 0.12s var(--ease);
}
.btn:hover { background: rgba(255, 255, 255, 0.09); border-color: rgba(255, 255, 255, 0.28); }
.btn:active { transform: translateY(1px); }
.btn.primary {
  grid-column: span 2;
  background: linear-gradient(180deg, #ff8c6e, var(--accent));
  border-color: transparent;
  color: #2a130c;
  font-weight: 600;
}
.btn.primary:hover { filter: brightness(1.05); }
.btn.small { padding: 9px 14px; font-size: 12.5px; }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(113, 182, 255, 0.45); }

/* Play/pause label swap */
#playpause .ic-play, #playpause .lbl-play { display: none; }
#playpause.paused .ic-pause, #playpause.paused .lbl-pause { display: none; }
#playpause.paused .ic-play, #playpause.paused .lbl-play { display: inline; }

/* Seed box */
.seed-form { display: flex; gap: 8px; }
.seed-form input {
  flex: 1;
  min-width: 0;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  padding: 10px 12px;
}
.seed-form input::placeholder { color: var(--text-faint); }
.seed-form input:focus-visible { outline: none; border-color: var(--accent-2); box-shadow: 0 0 0 3px rgba(113, 182, 255, 0.25); }
.hint { margin: 10px 0 0; font-size: 12px; color: var(--text-faint); line-height: 1.5; }

.about p { margin: 0; font-size: 13px; line-height: 1.62; color: var(--text-dim); }

.panel-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px 16px;
  font-size: 11.5px;
  color: var(--text-faint);
}
.panel-foot a { color: var(--text-dim); text-decoration: none; }
.panel-foot a:hover { color: var(--accent); }

/* ---------- Mobile dock ---------- */
.dock {
  position: fixed;
  z-index: 18;
  bottom: max(18px, env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  display: none;
  gap: 10px;
  background: rgba(13, 12, 20, 0.7);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}
.dock-btn {
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
}
.dock-btn:active { background: rgba(255, 255, 255, 0.14); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  z-index: 40;
  bottom: 26px;
  left: 50%;
  transform: translate(-50%, 18px);
  background: var(--panel-solid);
  border: 1px solid var(--line-strong);
  color: var(--text);
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 13.5px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  max-width: min(440px, calc(100vw - 40px));
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast a { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .brandtag { display: none; }
  .panel-toggle { display: inline-flex; }
  .dock { display: flex; }
  .panel {
    top: auto;
    bottom: 0;
    left: 0;
    width: 100%;
    max-height: 76dvh;
    border-radius: 20px 20px 0 0;
    border-bottom: none;
  }
  body:not(.panel-hidden) .dock { display: none; }
  body.panel-hidden .panel { transform: translateY(calc(100% + 40px)); }
  .seedpill { top: max(20px, env(safe-area-inset-top)); }
}

@media (prefers-reduced-motion: reduce) {
  .seedpill .dot { animation: none; }
  * { scroll-behavior: auto; }
}