:root {
  color-scheme: dark;
  --bg: #121417;
  --card: #1c2128;
  --line: #2d343d;
  --text: #f3f5f7;
  --muted: #9aa3ad;
  --accent: #3ee0b0;
  --accent-ink: #06281e;
  --warn: #ffb020;
  --live: #ff4d4d;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 400px at 10% -10%, rgba(62, 224, 176, 0.16), transparent 55%),
    var(--bg);
  color: var(--text);
  font: 16px/1.45 ui-sans-serif, system-ui, "Segoe UI", sans-serif;
}

main {
  width: min(440px, 100%);
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 16px calc(28px + env(safe-area-inset-bottom));
}

header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

h1, h2 { margin: 0; font-weight: 700; letter-spacing: -0.03em; }
h1 { font-size: 32px; }
h2 { font-size: 20px; }

.lang { display: flex; gap: 6px; }
.lang button,
.row button,
.text-link {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
}

.lang button {
  border-radius: 999px;
  padding: 6px 10px;
  min-width: 42px;
}

.lang button.active {
  background: var(--text);
  color: #111;
  border-color: var(--text);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px;
  box-shadow: var(--shadow);
}

.card + .card,
#status,
.hint { margin-top: 12px; }

label { display: block; margin-bottom: 12px; }
label span, .hint, #stats, #status { color: var(--muted); }
.hint, #stats, #status { margin: 0; font-size: 14px; }
#status { color: var(--text); min-height: 1.2em; }

input, select, button, .button {
  font: inherit;
}

input, select {
  width: 100%;
  margin-top: 6px;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #12161b;
  color: var(--text);
}

#room {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.row { display: flex; gap: 8px; margin-bottom: 12px; }
.row button, .button, #start, #stop {
  border-radius: 12px;
  padding: 12px 10px;
  min-height: 48px;
}

.row button { flex: 1; }

.check {
  display: flex;
  align-items: center;
  gap: 10px;
}
.check input { width: 20px; height: 20px; margin: 0; }
.check span { color: var(--text); }

#start, .button {
  display: block;
  width: 100%;
  text-align: center;
  text-decoration: none;
  background: var(--accent);
  color: var(--accent-ink);
  border: 0;
  font-weight: 700;
}

#stop {
  width: 100%;
  margin-top: 12px;
  background: transparent;
  color: var(--live);
  border: 1px solid var(--live);
  font-weight: 700;
}

.warn { border-color: rgba(255, 176, 32, 0.45); }
.warn ol { margin: 12px 0 0; padding-left: 18px; color: var(--muted); }
.text-link {
  display: inline-block;
  margin-top: 10px;
  padding: 8px 0;
  border: 0;
  color: var(--warn);
}

.preview-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  background: #000;
  aspect-ratio: 16 / 9;
}

video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
}

video.mirror { transform: scaleX(-1); }

#tally {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--live);
  color: white;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.meter {
  height: 8px;
  margin-top: 12px;
  border-radius: 999px;
  background: #12161b;
  overflow: hidden;
}

#level {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), #f2e38a 70%, var(--live));
}

button:active { transform: translateY(1px); }

.panel {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #151a20;
  overflow: hidden;
}

.panel > summary {
  cursor: pointer;
  list-style: none;
  padding: 12px 14px;
  font-weight: 700;
  color: var(--text);
  user-select: none;
}

.panel > summary::-webkit-details-marker { display: none; }

.panel > summary::after {
  content: "▸";
  float: right;
  color: var(--muted);
  transition: transform 0.15s ease;
}

.panel[open] > summary::after { transform: rotate(90deg); }

.panel-body {
  padding: 0 14px 14px;
  border-top: 1px solid var(--line);
}

.panel-body label { margin-top: 12px; }
.panel-body .row { margin-top: 8px; }

.seg {
  display: flex;
  gap: 6px;
  margin-top: 12px;
}

.seg button {
  flex: 1;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  padding: 8px 10px;
  min-height: 40px;
}

.seg button.active {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  font-weight: 700;
}

.cap em {
  font-style: normal;
  color: var(--accent);
  font-weight: 700;
}

.cap-note {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.expert { margin-top: 4px; }

body.ui-simple #prefer-sharp + span { /* keep */ }
input[type="range"] {
  width: 100%;
  margin-top: 8px;
  accent-color: var(--accent);
}