/* ---- Nocturne design tokens ---- */
:root {
  --color-bg: #161826;
  --color-text: #e9e9ed;

  --color-accent: #9184d9;
  --color-accent-300: #b1a7e6;
  --color-accent-2-300: #93cfc0;

  --color-neutral-100: #dcdde5;
  --color-neutral-200: #c2c3cf;
  --color-neutral-300: #999bac;
  --color-neutral-400: #757788;
  --color-neutral-500: #565868;
  --color-neutral-600: #414353;
  --color-neutral-700: #303241;
  --color-neutral-800: #252734;
  --color-neutral-900: #1b1d2a;

  --radius: 8px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: var(--font-body);
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 400;
  padding: var(--space-8) var(--space-6) var(--space-10);
}

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

.container { max-width: 1180px; margin: 0 auto; }

/* ---- Header ---- */
header { margin-bottom: var(--space-6); }
.header-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}
h1 {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 28px;
  margin: 0;
  color: var(--color-text);
}
.subhead {
  color: var(--color-neutral-300);
  font-size: 14px;
  margin: 0;
  max-width: 60ch;
}

/* ---- Tags ---- */
.tag {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  line-height: 1.6;
  padding: 2px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.tag-accent {
  color: var(--color-accent-300);
  border: 1px solid rgba(145, 132, 217, 0.4);
  background: rgba(145, 132, 217, 0.08);
}
.tag-outline {
  color: var(--color-neutral-300);
  border: 1px solid var(--color-neutral-600);
  font-family: var(--font-mono);
}

/* ---- Cards ---- */
.card {
  background: var(--color-neutral-900);
  border: 1px solid var(--color-neutral-800);
  border-radius: var(--radius);
}
.elev-sm { box-shadow: var(--shadow-sm); }
.elev-md { box-shadow: var(--shadow-md); }

/* ---- Buttons ---- */
.btn {
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius);
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-neutral-200);
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s, background 0.12s;
}
.btn:disabled { cursor: default; }
.btn-primary {
  border-color: var(--color-accent);
  color: var(--color-accent-300);
}
.btn-primary:hover:not(:disabled) { background: rgba(145, 132, 217, 0.1); }
.btn-primary:disabled { opacity: 0.6; }
.btn-secondary {
  border-color: var(--color-neutral-600);
  color: var(--color-neutral-200);
}
.btn-secondary:hover:not(:disabled) { border-color: var(--color-neutral-400); }
.btn-secondary:disabled { opacity: 0.4; }
.btn-ghost { color: var(--color-neutral-300); }
.btn-ghost:hover:not(:disabled) {
  background: var(--color-neutral-800);
  color: var(--color-neutral-100);
}
.btn-ghost:disabled { opacity: 0.4; }
.btn-remove { font-size: 12px; padding: 4px 10px; }

/* ---- Config card ---- */
.config-card {
  margin-bottom: var(--space-6);
  padding: var(--space-4) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.config-rows { display: flex; flex-direction: column; }
.lane-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-neutral-800);
}
.lane-label {
  width: 88px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-neutral-200);
  flex-shrink: 0;
}
.lane-row-spacer { flex: 1; }
.config-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-1);
}
.config-actions { display: flex; gap: var(--space-3); }

/* ---- Segmented control ---- */
.seg {
  display: inline-flex;
  gap: 2px;
  padding: 2px;
  background: var(--color-bg);
  border: 1px solid var(--color-neutral-700);
  border-radius: 999px;
  flex-shrink: 0;
}
.seg-opt {
  position: relative;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--color-neutral-300);
  cursor: pointer;
  user-select: none;
  transition: color 0.12s, border-color 0.12s, background 0.12s;
}
.seg-opt input {
  position: absolute;
  appearance: none;
  -webkit-appearance: none;
  inset: 0;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}
.seg-opt:hover { color: var(--color-neutral-100); }
.seg-opt:has(input:checked) {
  color: var(--color-accent-300);
  border-color: var(--color-accent);
  background: rgba(145, 132, 217, 0.1);
}
.seg-opt:has(input:focus-visible) {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.seg-opt:has(input:disabled) { opacity: 0.5; cursor: default; }
.seg-opt:has(input:disabled):hover { color: var(--color-neutral-300); }
.seg-opt:has(input:checked):has(input:disabled):hover { color: var(--color-accent-300); }

/* ---- Number input ---- */
.input {
  font: inherit;
  font-size: 13px;
  padding: 6px 8px;
  background: var(--color-bg);
  border: 1px solid var(--color-neutral-700);
  border-radius: var(--radius);
  color: var(--color-text);
}
.input:disabled { opacity: 0.5; }
.speed-field { display: flex; align-items: center; gap: var(--space-2); }
.speed-unit { font-size: 11px; color: var(--color-neutral-400); }
.tsv-num { width: 76px; text-align: center; }
.tsv-num::-webkit-inner-spin-button,
.tsv-num::-webkit-outer-spin-button { opacity: 0.6; }

/* ---- Comparison grid ---- */
.grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: repeat(var(--cols, 3), 1fr);
}

.lane-card {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.lane-card-head { padding: var(--space-4) var(--space-4) var(--space-3); }
.lane-card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}
.lane-card-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.lane-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}
.lane-card h3 {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 15px;
  margin: 0;
  color: var(--color-neutral-100);
}

.progress-track {
  height: 5px;
  border-radius: 3px;
  background: var(--color-neutral-800);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  border-radius: 3px;
  transition: width 0.12s linear;
}
.progress-caption {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-2);
}
.progress-caption span {
  font-size: 11px;
  color: var(--color-neutral-400);
  font-family: var(--font-mono);
}

.reading-window {
  position: relative;
  flex: none;
  height: 440px;
  overflow: hidden;
  padding: 0 var(--space-4) var(--space-8);
}
.reading-content {
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--color-neutral-200);
  white-space: pre-wrap;
}
.ready-placeholder {
  color: var(--color-neutral-500);
  font-style: italic;
}

@keyframes fadeInTok {
  from { opacity: 0; transform: translateY(2px); }
  to { opacity: 1; transform: translateY(0); }
}
.tsv-token { display: inline; }
.tsv-token.anim { animation: fadeInTok 0.18s ease-out both; }

/* Token classification colors (applied per streamed token) */
.tok-keyword { color: var(--color-accent-300); }
.tok-string { color: var(--color-accent-2-300); }
.tok-comment { color: var(--color-neutral-500); }
.tok-number { color: var(--color-neutral-300); }
.tok-call { color: var(--color-neutral-100); }
.tok-default { color: var(--color-neutral-200); }

/* Lane status dot colors + streaming glow (keyed to preset) */
.dot-slow { background: var(--color-neutral-400); }
.dot-mid { background: var(--color-accent-300); }
.dot-fast { background: var(--color-accent); }
.dot-custom { background: var(--color-accent-2-300); }
.lane-dot.glow.dot-slow { box-shadow: 0 0 8px #757788; }
.lane-dot.glow.dot-mid { box-shadow: 0 0 8px #b1a7e6; }
.lane-dot.glow.dot-fast { box-shadow: 0 0 8px #9184d9; }
.lane-dot.glow.dot-custom { box-shadow: 0 0 8px #93cfc0; }