:root {
  --bg: #0a0a0b;
  --bar-bg: #141417;
  --border: #26262b;
  --text: #f4f4f5;
  --muted: #8a8a94;
  --accent: #6366f1;
  --accent-hover: #7c7ff5;
  --speaker: #34d399;

  /* Driven by JS */
  --font-size: 56px;
  --active-opacity: 1;
  --dim-opacity: 0.35;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  overflow: hidden;
}

/* ---------- Top bar ---------- */
.bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px;
  background: rgba(20, 20, 23, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: transform 0.35s ease, opacity 0.35s ease;
}
.bar.hidden { transform: translateY(-100%); opacity: 0; }

.bar-group { display: flex; align-items: center; gap: 8px; }
.bar-group.controls { flex: 1; justify-content: center; flex-wrap: wrap; gap: 18px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  background: #1f1f24;
  border: 1px solid var(--border);
  border-radius: 9px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
  user-select: none;
  white-space: nowrap;
}
.btn:hover { background: #2a2a31; border-color: #3a3a42; }
.btn:active { transform: scale(0.97); }
.btn.active { background: var(--accent); border-color: var(--accent); }

.btn-primary { background: var(--accent); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.ctrl {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}
.ctrl span { min-width: 34px; }
.ctrl output {
  font-variant-numeric: tabular-nums;
  min-width: 38px;
  text-align: right;
  color: var(--text);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 120px;
  height: 4px;
  border-radius: 3px;
  background: #3a3a42;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--accent);
}
input[type="range"]::-moz-range-thumb {
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #fff;
}

/* ---------- Stage ---------- */
.stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.stage.mirror .prompter { transform: scaleX(-1); }

.reticle {
  position: fixed;
  top: 42%;
  left: 0; right: 0;
  height: calc(var(--font-size) * 1.35);
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 5;
  border-top: 1px solid rgba(99, 102, 241, 0.35);
  border-bottom: 1px solid rgba(99, 102, 241, 0.35);
  background: rgba(99, 102, 241, 0.05);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.stage.playing .reticle { opacity: 1; }

.prompter {
  padding: 42vh 8vw;
  font-size: var(--font-size);
  line-height: 1.45;
  font-weight: 600;
  letter-spacing: 0.01em;
  will-change: transform;
}

.line {
  opacity: var(--dim-opacity);
  transition: opacity 0.25s ease;
  margin: 0.15em 0;
}
.line.active { opacity: var(--active-opacity); }
.line.blank { height: 0.7em; }

.speaker {
  color: var(--speaker);
  font-weight: 800;
  letter-spacing: 0.03em;
}

/* ---------- Editor overlay ---------- */
.editor {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(6, 6, 8, 0.82);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.editor.open { opacity: 1; pointer-events: auto; }

.editor-card {
  width: min(760px, 100%);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bar-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
}
.editor-card h1 { font-size: 22px; font-weight: 700; }
.hint { color: var(--muted); font-size: 14px; line-height: 1.5; }
.hint code, kbd {
  background: #26262b;
  border: 1px solid #34343c;
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 12px;
  color: var(--speaker);
}
kbd { color: var(--text); }

#scriptInput {
  flex: 1;
  min-height: 300px;
  resize: vertical;
  background: #0e0e10;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 15px;
  line-height: 1.6;
  outline: none;
}
#scriptInput:focus { border-color: var(--accent); }

.editor-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.editor-tip { color: var(--muted); font-size: 13px; }

@media (max-width: 720px) {
  .bar-group.controls { order: 3; width: 100%; justify-content: flex-start; }
}