:root {
  --bg: #000;
  --fg: #fff;
  --accent: #ffd400;
  --accent-fg: #000;
  --muted: #1a1a1a;
  --border: #fff;
  --danger: #ff5a5a;
  color-scheme: dark;
}

* { box-sizing: border-box; }

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 20px;
  line-height: 1.4;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--accent); color: var(--accent-fg); padding: 12px 16px; z-index: 10;
}
.skip:focus { left: 0; }

:focus-visible { outline: 4px solid var(--accent); outline-offset: 3px; }

.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; gap: 8px; flex-wrap: wrap;
}
.top h1 { margin: 0; font-size: 1.4rem; letter-spacing: 0.02em; color: var(--accent); }
.top-actions { display: flex; gap: 8px; }

.chip {
  font: inherit; font-weight: 700;
  background: var(--bg); color: var(--fg);
  border: 3px solid var(--border); border-radius: 14px;
  padding: 10px 16px; min-height: 48px; cursor: pointer;
}
.chip:hover:not(:disabled) { background: var(--muted); }
.chip:disabled { opacity: 0.4; cursor: not-allowed; }
.chip.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }

.settings {
  margin: 0 14px 8px; padding: 14px;
  border: 3px solid var(--border); border-radius: 16px;
  display: grid; gap: 14px;
}
.settings[hidden] { display: none; }
.settings label { display: grid; gap: 6px; font-weight: 700; }
.settings label.check { display: block; font-weight: 400; font-size: 0.9rem; }
.settings input[type="range"] { width: 100%; height: 36px; accent-color: var(--accent); }
.settings select {
  font: inherit; background: var(--bg); color: var(--fg);
  border: 3px solid var(--border); border-radius: 12px; padding: 10px;
}

main { flex: 1; display: flex; flex-direction: column; gap: 12px; padding: 0 14px; min-height: 0; }

.viewfinder {
  position: relative; border: 4px solid var(--accent); border-radius: 20px;
  overflow: hidden; background: #111; aspect-ratio: 4 / 3; max-height: 42dvh; width: 100%;
}
.viewfinder video { width: 100%; height: 100%; object-fit: cover; display: block; }
.cam-msg {
  position: absolute; inset: 0; display: grid; place-items: center; text-align: center;
  padding: 16px; font-weight: 700; background: rgba(0,0,0,0.75);
}
.cam-msg[hidden] { display: none; }
.listening {
  position: absolute; left: 12px; top: 12px; background: var(--danger); color: #000;
  font-weight: 800; padding: 6px 14px; border-radius: 999px;
  animation: pulse 1.1s ease-in-out infinite;
}
.listening[hidden] { display: none; }
@keyframes pulse { 50% { opacity: 0.55; } }

.answer-card {
  border: 3px solid var(--border); border-radius: 18px; padding: 14px;
  flex: 1; overflow-y: auto; min-height: 120px;
}
.status { margin: 0 0 8px; color: #cfcfcf; font-size: 0.95rem; }
.status.error { color: var(--danger); font-weight: 700; }
.answer { margin: 0 0 12px; font-size: 1.5rem; font-weight: 700; line-height: 1.35; }
.answer-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.controls { padding: 12px 14px 16px; display: grid; gap: 12px; }
.text-form { display: flex; gap: 8px; }
.text-form input {
  flex: 1; min-width: 0; font: inherit; background: var(--bg); color: var(--fg);
  border: 3px solid var(--border); border-radius: 14px; padding: 12px 14px; min-height: 52px;
}
.text-form input::placeholder { color: #bdbdbd; }

.big-row { display: grid; grid-template-columns: 1fr 1.6fr; gap: 12px; }
.big {
  font: inherit; font-size: 1.35rem; font-weight: 800; cursor: pointer;
  border: 4px solid var(--border); border-radius: 22px; min-height: 92px; padding: 10px;
}
.big.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.big.secondary { background: var(--bg); color: var(--fg); }
.big.recording { background: var(--danger); border-color: var(--danger); color: #000; }
.big:disabled { opacity: 0.5; }

.hint { margin: 0; font-size: 0.8rem; color: #bdbdbd; text-align: center; }

@media (min-width: 820px) {
  main, .controls, .settings { max-width: 760px; width: 100%; margin-left: auto; margin-right: auto; }
  .viewfinder { max-height: 48dvh; }
}

@media (prefers-reduced-motion: reduce) {
  .listening { animation: none; }
}