:root {
  --bg: #0e0e11;
  --panel: #17171c;
  --panel-2: #1f1f27;
  --text: #f2f2f5;
  --muted: #8b8b96;
  --dim: #5a5a66;
  --pivot: #ff5252;
  --accent: #5b8cff;
  --tick: #ff5252;
  --border: #2a2a33;
}
:root.light {
  --bg: #f7f7f5;
  --panel: #ffffff;
  --panel-2: #efeff0;
  --text: #14141a;
  --muted: #6a6a74;
  --dim: #aaaab2;
  --pivot: #e23030;
  --accent: #2f6bff;
  --tick: #e23030;
  --border: #e2e2e6;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
  overflow: hidden;
}
body {
  display: flex;
  flex-direction: column;
}

/* ---------- Reading stage ---------- */
.stage {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}

.reticle {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35em;
}

.tick {
  width: 2px;
  height: 0.9rem;
  background: var(--tick);
  opacity: 0.85;
}

.word-row {
  display: flex;
  width: 100%;
  align-items: baseline;
  justify-content: center;
  font-size: var(--word-size, 7vw);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.1;
  font-feature-settings: "tnum" 0;
}
.seg { white-space: pre; }
.seg.left  { flex: 1 1 0; text-align: right; }
.seg.right { flex: 1 1 0; text-align: left; }
.seg.pivot { flex: 0 0 auto; color: var(--pivot); }
body.no-orp .seg.pivot { color: inherit; }

/* ---------- Scrolling (flow) reader ---------- */
.flow {
  position: absolute;
  inset: 0;
  display: none;           /* shown only in flow mode */
  align-items: center;
  overflow: hidden;
}
body.mode-flow .reticle { display: none; }
body.mode-flow .flow { display: flex; }
.flow-track {
  position: relative;
  white-space: nowrap;
  font-size: calc(var(--word-size, 7vw) * 0.55);
  font-weight: 600;
  line-height: 1.2;
  color: var(--dim);
  padding: 0 50vw;          /* room so first/last words can reach the anchor */
  will-change: transform;
  transition: transform 0.12s ease-out;
}
.flow-word { margin: 0 0.3em; }
.flow-word .piv { color: inherit; }
.flow-word.current { color: var(--text); }
.flow-word.current .piv { color: var(--pivot); }
body.no-orp .flow-word.current .piv { color: inherit; }
.flow-guide {
  position: absolute;
  top: 0; bottom: 0;
  left: 30%;
  width: 2px;
  background: var(--tick);
  opacity: 0.4;
  pointer-events: none;
}

/* progress */
.progress {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 6px;
  background: var(--panel-2);
  cursor: pointer;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.05s linear;
}

.hud {
  position: absolute;
  top: max(0.8rem, env(safe-area-inset-top));
  left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 1rem;
  color: var(--dim);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}

/* ---------- Controls ---------- */
.controls {
  background: var(--panel);
  border-top: 1px solid var(--border);
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.transport {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}
.btn {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.5rem 0.8rem;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease;
}
.btn:active { transform: scale(0.94); }
.btn.icon { min-width: 44px; }
.btn.play {
  min-width: 64px;
  font-size: 1.3rem;
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}
.btn.small { padding: 0.4rem 0.7rem; font-size: 0.85rem; }
.btn.primary { background: var(--accent); color: #fff; border-color: transparent; font-weight: 600; }
.btn.active { background: var(--accent); color: #fff; border-color: transparent; }

.sliders {
  display: flex;
  gap: 1.25rem;
}
.sliders label {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.sliders label span { width: 3em; }
.sliders input[type=range] { flex: 1; accent-color: var(--accent); }
.sliders output {
  width: 2.6em;
  text-align: right;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.toggles {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--muted);
}
.chk { display: flex; align-items: center; gap: 0.4rem; cursor: pointer; }
.chk input { accent-color: var(--accent); }
.toggles .btn { margin-left: auto; }
.toggles .btn + .btn { margin-left: 0; }

/* ---------- Editor sheet ---------- */
.sheet {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  z-index: 10;
}
.sheet.hidden { display: none; }
.sheet-inner {
  width: 100%;
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.sheet h1 { margin: 0; font-size: 1.5rem; }
.muted { color: var(--muted); font-size: 0.9rem; margin: 0; }
#input {
  width: 100%;
  min-height: 38vh;
  resize: vertical;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  font-size: 1rem;
  line-height: 1.5;
}
.sheet-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.sheet-actions .muted { margin-right: auto; }

/* ---------- Settings overlay ---------- */
.settings-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.25rem;
}
.settings-head h1 { margin: 0; }
#settings .sheet-inner { max-height: 100%; overflow-y: auto; }
.setting-row {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.setting-row > label:first-child {
  flex: 1;
  color: var(--muted);
  font-size: 0.9rem;
}
.setting-row input[type=range] { flex: 2; accent-color: var(--accent); }
.setting-row output {
  width: 3em;
  text-align: right;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.setting-row input[type=color] {
  width: 52px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: none;
  cursor: pointer;
}
.setting-row.toggles-row { gap: 1.5rem; flex-wrap: wrap; }
.sep {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.4rem 0;
  width: 100%;
}

/* immersive mode hides chrome for clean recording */
body.immersive .controls { display: none; }
body.immersive .hud { opacity: 0; }