/* Themes: each sets the surface, text, and accent tokens used below. */
:root,
[data-theme="observatory"] {
  --ink: #0a0e16;
  --panel: rgba(12, 16, 26, 0.8);
  --panel-2: rgba(24, 30, 44, 0.92);
  --line: rgba(226, 190, 120, 0.16);
  --line-strong: rgba(226, 190, 120, 0.36);
  --text: #efe6d0;
  --muted: #9c9482;
  --accent: #e3b25c;
  --accent-ink: #15110a;
  --accent-soft: rgba(227, 178, 92, 0.16);
  --hover: rgba(255, 255, 255, 0.05);
  --display: Georgia, "Times New Roman", serif;
  --ui: Bahnschrift, "DIN Alternate", "Segoe UI", system-ui, sans-serif;
}
[data-theme="forge"] {
  --ink: #120806;
  --panel: rgba(28, 13, 8, 0.82);
  --panel-2: rgba(44, 22, 14, 0.94);
  --line: rgba(255, 140, 80, 0.18);
  --line-strong: rgba(255, 140, 80, 0.4);
  --text: #f7e6da;
  --muted: #b49484;
  --accent: #ff7b3a;
  --accent-ink: #1b0a04;
  --accent-soft: rgba(255, 123, 58, 0.18);
  --hover: rgba(255, 200, 150, 0.06);
}
[data-theme="glacier"] {
  --ink: #dfeaf0;
  --panel: rgba(246, 250, 252, 0.84);
  --panel-2: rgba(255, 255, 255, 0.96);
  --line: rgba(20, 70, 90, 0.16);
  --line-strong: rgba(20, 70, 90, 0.36);
  --text: #0e2630;
  --muted: #4f6b76;
  --accent: #1d6f8e;
  --accent-ink: #ffffff;
  --accent-soft: rgba(29, 111, 142, 0.14);
  --hover: rgba(20, 70, 90, 0.06);
}
[data-theme="atlas"] {
  --ink: #e8dcc0;
  --panel: rgba(241, 231, 208, 0.93);
  --panel-2: #fbf5e6;
  --line: rgba(70, 44, 20, 0.2);
  --line-strong: rgba(70, 44, 20, 0.42);
  --text: #2b1f14;
  --muted: #6e5c46;
  --accent: #8a2f1c;
  --accent-ink: #fbf5e6;
  --accent-soft: rgba(138, 47, 28, 0.12);
  --hover: rgba(70, 44, 20, 0.06);
  --display: "Palatino Linotype", Palatino, Georgia, serif;
  --ui: Georgia, "Times New Roman", serif;
}
[data-theme="plasma"] {
  --ink: #07030f;
  --panel: rgba(14, 6, 26, 0.8);
  --panel-2: rgba(30, 14, 52, 0.94);
  --line: rgba(255, 79, 163, 0.2);
  --line-strong: rgba(54, 241, 255, 0.4);
  --text: #f4e9ff;
  --muted: #a78fc4;
  --accent: #ff4fa3;
  --accent-ink: #1a0410;
  --accent-soft: rgba(255, 79, 163, 0.16);
  --hover: rgba(255, 255, 255, 0.05);
}

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

html, body { height: 100%; margin: 0; }

body {
  overflow: hidden;
  background: var(--ink);
  color: var(--text);
  font-family: var(--ui);
  font-size: 14px;
  transition: background-color 0.5s, color 0.5s;
}

button, input, select { font: inherit; color: inherit; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

#view {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: grab;
  user-select: none;
}
#view:active { cursor: grabbing; }

.brand {
  position: fixed;
  top: 18px;
  left: 22px;
  pointer-events: none;
}
.brand h1 {
  margin: 0;
  font-family: var(--display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
  text-shadow: 0 1px 14px rgba(0, 0, 0, 0.5);
}
[data-theme="glacier"] .brand h1,
[data-theme="atlas"] .brand h1 { text-shadow: none; }

.panel {
  position: fixed;
  top: 72px;
  bottom: 84px;
  width: 268px;
  overflow-y: auto;
  padding: 6px 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 24px 50px -28px rgba(0, 0, 0, 0.7);
  transition: background-color 0.5s, border-color 0.5s;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}
#atlas { left: 16px; }
#instrument { right: 16px; width: 300px; }

.panel section { padding: 14px 0 6px; border-top: 1px solid var(--line); }
.panel section:first-child { border-top: 0; }

h2 {
  margin: 0 0 10px;
  font-family: var(--display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.muted { margin: 0 0 8px; color: var(--muted); font-size: 13px; }

.chips {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.chip, .row-btn, .btn, .seg button, .dock-btn {
  cursor: pointer;
}
.chip {
  padding: 8px 10px;
  text-align: left;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--muted);
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}
.chip:hover { color: var(--text); border-color: var(--line-strong); }
.chip[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}

.list { display: grid; gap: 2px; margin-bottom: 8px; }
.row-btn {
  padding: 7px 8px;
  text-align: left;
  background: transparent;
  border: 0;
  border-radius: 4px;
  color: var(--text);
}
.row-btn:hover { background: var(--hover); }

.swatches {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}
.swatch {
  height: 30px;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: inset 0 0 0 1px var(--line-strong);
}
.swatch[aria-pressed="true"] {
  box-shadow: 0 0 0 2px var(--panel-2), 0 0 0 4px var(--accent);
}
.swatch[hidden] { display: none; }

.ctl { display: grid; gap: 4px; margin: 10px 0 12px; }
.ctl-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  color: var(--muted);
  font-size: 13px;
}
.ctl-head output {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
input[type="range"] {
  --p: 50%;
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 18px;
  margin: 0;
  background: transparent;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent) var(--p), var(--line-strong) var(--p));
}
input[type="range"]::-moz-range-track {
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent) var(--p), var(--line-strong) var(--p));
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  margin-top: -6.5px;
  border-radius: 50%;
  background: var(--panel-2);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--panel-2);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.seg-wrap { margin-bottom: 6px; }
.seg { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 4px; }
.seg button {
  flex: 1 1 auto;
  padding: 6px 8px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--muted);
  font-size: 13px;
}
.seg button:hover { color: var(--text); border-color: var(--line-strong); }
.seg button[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--text);
  font-weight: 600;
}

.inline, .stack { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 4px 0 8px; }
.stack { flex-direction: column; align-items: stretch; }

.check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
}
.check input { width: 16px; height: 16px; accent-color: var(--accent); margin: 0; }

.btn {
  padding: 7px 12px;
  background: var(--panel-2);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--text);
}
.btn:hover { border-color: var(--accent); }

.themes { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.theme {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 9px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--muted);
  cursor: pointer;
  text-align: left;
}
.theme:hover { color: var(--text); border-color: var(--line-strong); }
.theme[aria-pressed="true"] { color: var(--text); border-color: var(--accent); background: var(--accent-soft); }
.theme-dot { width: 12px; height: 12px; border-radius: 50%; flex: none; background: var(--accent); }
.theme[data-theme-id="observatory"] .theme-dot { background: #e3b25c; }
.theme[data-theme-id="forge"] .theme-dot { background: #ff7b3a; }
.theme[data-theme-id="glacier"] .theme-dot { background: #1d6f8e; }
.theme[data-theme-id="atlas"] .theme-dot { background: #8a2f1c; }
.theme[data-theme-id="plasma"] .theme-dot { background: #ff4fa3; }

.readout {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.readout[hidden] { display: none; }

#dock {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  display: flex;
  flex-wrap: nowrap;
  gap: 4px;
  max-width: calc(100vw - 24px);
  padding: 6px;
  overflow-x: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 24px 50px -28px rgba(0, 0, 0, 0.7);
  scrollbar-width: none;
}
#dock button {
  flex: none;
  padding: 8px 11px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 5px;
  color: var(--text);
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
}
#dock button:hover { background: var(--hover); border-color: var(--line); }
#dock #tour[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }

.notice {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  max-width: min(92vw, 520px);
  padding: 10px 14px;
  background: var(--panel-2);
  border: 1px solid var(--accent);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  z-index: 5;
}
.notice[hidden] { display: none; }

.fullnotice {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  text-align: center;
  z-index: 6;
}
.fullnotice[hidden] { display: none; }

.phone-only { display: none !important; }

body.panels-hidden .panel { display: none; }

@media (max-width: 760px) {
  .panel {
    top: auto;
    left: 8px;
    right: 8px;
    bottom: 72px;
    width: auto;
    max-height: 56vh;
    display: none;
  }
  #instrument { right: 8px; }
  body[data-sheet="atlas"] #atlas,
  body[data-sheet="instrument"] #instrument { display: block; }
  .phone-only { display: inline-block !important; order: -1; }
  #prev, #next { display: none; }
  .brand { top: 12px; left: 14px; }
  .brand h1 { font-size: 19px; }
  .chips { grid-template-columns: 1fr 1fr 1fr; }
  #dock { bottom: 8px; width: calc(100vw - 16px); }
  #dock button { padding: 8px 9px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}