/* Design tokens — see docs/DESIGN.md for the full brief. */
:root {
  --bg: #0a0a0d;
  --surface-1: #141419;
  --surface-2: #1c1c22;
  --text: #f5ede0;
  --text-muted: #8a8a94;
  --accent: #ffb000;
  --accent-support: #ff3b30;
  --success: #3ddc84;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;

  --radius: 4px;
  --motion-ui: 150ms ease-out;
  --motion-flash: 90ms ease-out;

  --glow: 0 0 8px rgba(255, 176, 0, 0.65), 0 0 28px rgba(255, 176, 0, 0.35);

  --font-display: "VT323", ui-monospace, "Courier New", monospace;
  --font-ui: "Space Grotesk", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  /* Layered vignette + faint amber pool so the room never reads as flat black. */
  background:
    radial-gradient(ellipse 120% 80% at 50% 30%, rgba(255, 176, 0, 0.06), transparent 60%),
    radial-gradient(ellipse at top, var(--surface-1) 0%, var(--bg) 72%);
  color: var(--text);
  font-family: var(--font-ui);
  min-height: 100vh;
}

/* CRT scanline texture over the whole room. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.12) 3px
  );
  mix-blend-mode: multiply;
  opacity: 0.5;
  z-index: 5;
}

.room {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-3);
  text-align: center;
}

/* ---------- Wordmark ---------- */
.wordmark {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: uppercase;
}
.wordmark__glyph {
  color: var(--accent);
  text-shadow: var(--glow);
  margin-right: 0.15em;
}
.wordmark__text {
  color: var(--text);
}

/* ---------- No-JS fallback ---------- */
.noscript {
  max-width: 46ch;
  margin: 0;
  padding: var(--space-2) var(--space-3);
  color: var(--text);
  background: var(--surface-1);
  border: 1px solid var(--accent-support);
  border-radius: var(--radius);
  font-size: 1rem;
  line-height: 1.5;
}

/* ---------- Setup form ---------- */
.setup {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: center;
  gap: var(--space-2) var(--space-3);
  width: min(92vw, 720px);
  padding: var(--space-3);
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
  flex: 1 1 200px;
}
.field__label {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.field__input {
  font-family: var(--font-ui);
  font-size: 1.1rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid #2b2b33;
  border-radius: var(--radius);
  padding: 12px var(--space-2);
  min-height: 48px;
  transition:
    border-color var(--motion-ui),
    box-shadow var(--motion-ui);
}
.field__input::placeholder {
  color: #55555f;
}
.field__input:hover {
  border-color: #3a3a44;
}
.field__input:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(255, 176, 0, 0.3);
}
.field__input[aria-invalid="true"] {
  border-color: var(--accent-support);
}
.field__error {
  margin: 0;
  min-height: 1.1em;
  font-size: 0.8rem;
  color: var(--accent-support);
}

/* ---------- Presets ---------- */
.presets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  flex-basis: 100%;
  justify-content: center;
}
.preset {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--surface-2);
  border-radius: 999px;
  padding: 8px 14px;
  min-height: 40px;
  cursor: pointer;
  transition:
    color var(--motion-ui),
    border-color var(--motion-ui),
    background var(--motion-ui);
}
.preset:hover {
  color: var(--text);
  border-color: var(--accent);
}
.preset:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(255, 176, 0, 0.3);
}

/* ---------- Ticker hero ---------- */
.ticker {
  position: relative;
  width: min(94vw, 1100px);
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background:
    radial-gradient(ellipse at center, rgba(255, 176, 0, 0.05), transparent 70%),
    var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  box-shadow: inset 0 0 0 1px rgba(255, 176, 0, 0.04);
  overflow: hidden;
}
.ticker__digits {
  font-family: var(--font-display);
  font-size: clamp(3rem, 15vw, 12rem);
  line-height: 0.9;
  color: var(--accent);
  text-shadow: var(--glow);
  margin: 0;
  font-variant-numeric: tabular-nums;
  transition:
    color var(--motion-flash),
    transform var(--motion-flash);
  will-change: transform;
}

/* Boot-up flicker: the sign powers on. */
.ticker__digits.is-booting {
  animation: boot-flicker 400ms steps(6, end);
}
@keyframes boot-flicker {
  0% { opacity: 0; filter: brightness(2.4); }
  15% { opacity: 1; filter: brightness(0.5); }
  30% { opacity: 0.6; filter: brightness(1.8); }
  50% { opacity: 1; filter: brightness(1); }
  65% { opacity: 0.4; filter: brightness(2); }
  100% { opacity: 1; filter: brightness(1); }
}

/* Milestone flash: pulse red and scale up 2%. */
.ticker__digits.is-milestone {
  animation: milestone-pulse 340ms ease-out;
}
@keyframes milestone-pulse {
  0% { color: var(--accent); transform: scale(1); }
  26% { color: var(--accent-support); transform: scale(1.02); }
  100% { color: var(--accent); transform: scale(1); }
}

/* ---------- Sub-readouts ---------- */
.readouts {
  display: flex;
  gap: var(--space-4);
  color: var(--text-muted);
}
.readout {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.readout__value {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--text);
  letter-spacing: 0.02em;
}

/* ---------- Controls ---------- */
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  align-items: center;
}
.btn {
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid #2b2b33;
  border-radius: var(--radius);
  padding: 12px var(--space-3);
  min-height: 48px;
  min-width: 48px;
  cursor: pointer;
  transition:
    transform var(--motion-ui),
    border-color var(--motion-ui),
    background var(--motion-ui),
    color var(--motion-ui);
}
.btn:hover {
  border-color: var(--accent);
}
.btn:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(255, 176, 0, 0.35);
}
.btn:active {
  transform: translateY(2px);
}
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  border-color: #2b2b33;
}
.btn--primary {
  color: #0a0a0d;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.03em;
  box-shadow: 0 0 18px rgba(255, 176, 0, 0.35);
}
.btn--primary:hover:not(:disabled) {
  background: #ffc033;
}
.btn--icon {
  font-family: var(--font-display);
  font-size: 1.3rem;
}
.btn.is-confirmed {
  color: var(--success);
  border-color: var(--success);
}

.exit-present {
  position: fixed;
  top: var(--space-2);
  right: var(--space-2);
  z-index: 6;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--surface-2);
  border: 1px solid #2b2b33;
  border-radius: 999px;
  padding: 10px 16px;
  min-height: 44px;
  cursor: pointer;
  transition: color var(--motion-ui), border-color var(--motion-ui);
}
.exit-present:hover,
.exit-present:focus-visible {
  outline: none;
  color: var(--text);
  border-color: var(--accent);
}

/* ---------- Presenter mode ---------- */
.room.is-presenting .setup,
.room.is-presenting .readouts .readout:first-child {
  display: none;
}
.room.is-presenting .controls .btn:not(#pause):not(#reset):not(#mute) {
  display: none;
}
.room.is-presenting .ticker {
  min-height: 74vh;
}

/* ---------- Utility ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- About / search content ---------- */
.about {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--surface-2);
  background: var(--surface-1);
  padding: var(--space-8) var(--space-3);
}
.about__inner {
  max-width: 68ch;
  margin: 0 auto;
  text-align: left;
}
.about__h {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  letter-spacing: 0.03em;
  color: var(--accent);
  text-shadow: 0 0 10px rgba(255, 176, 0, 0.25);
  margin: var(--space-6) 0 var(--space-2);
}
.about__h:first-child {
  margin-top: 0;
}
.about p {
  line-height: 1.65;
  color: var(--text);
  margin: 0 0 var(--space-2);
}
.about__cta {
  display: inline-block;
  margin: var(--space-2) 0 var(--space-4);
  text-decoration: none;
}
.faq {
  margin: 0;
}
.faq dt {
  font-weight: 700;
  color: var(--text);
  margin-top: var(--space-3);
}
.faq dd {
  margin: 6px 0 0;
  color: var(--text-muted);
  line-height: 1.6;
}
.portfolio {
  margin-top: var(--space-8);
  padding-top: var(--space-3);
  border-top: 1px solid var(--surface-2);
  font-size: 0.9rem;
  color: var(--text-muted);
}
.portfolio a {
  color: var(--accent);
  text-decoration: none;
}
.portfolio a:hover,
.portfolio a:focus-visible {
  text-decoration: underline;
}

/* ---------- Breakpoints ---------- */
@media (max-width: 640px) {
  .ticker {
    min-height: 55vh;
  }
  .ticker__digits {
    font-size: clamp(2.5rem, 17vw, 5rem);
  }
  .readouts {
    gap: var(--space-3);
  }
  .controls {
    width: 100%;
  }
  .btn--primary {
    flex: 1 1 100%;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .ticker__digits {
    transition: color var(--motion-flash);
    will-change: auto;
  }
  .ticker__digits.is-booting {
    animation: none;
  }
  .ticker__digits.is-milestone {
    animation: none;
    color: var(--accent-support);
  }
  .btn:active {
    transform: none;
  }
}