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

:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --border: #262626;
  --border-strong: #404040;
  --text: #e5e5e5;
  --text-dim: #737373;
  --text-faint: #525252;
  --live: #c9a227;
  --danger: #c44;
  --mono: ui-monospace, 'SF Mono', 'Cascadia Code', Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

.hidden {
  display: none !important;
}

/* ── Shell ───────────────────────────────────────────────── */

.app {
  width: min(420px, 100%);
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 24px 20px;
  padding: max(24px, env(safe-area-inset-top)) 20px max(24px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.app.in-call {
  justify-content: safe center;
  padding-top: max(16px, env(safe-area-inset-top));
}

/* ── Join ────────────────────────────────────────────────── */

.site-title {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 16px;
}

.site-lead {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 8px;
}

.site-desc {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 32px;
  line-height: 1.5;
}

.site-foot {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}

.field {
  display: block;
  margin-bottom: 16px;
}

.field-label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

input {
  display: block;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 0;
  background: var(--surface);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
}

input:focus {
  outline: 1px solid var(--border-strong);
  outline-offset: -1px;
}

button {
  border: none;
  font-family: inherit;
  cursor: pointer;
}

#join-btn {
  width: 100%;
  padding: 11px 16px;
  background: var(--text);
  color: var(--bg);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

#join-btn:hover:not(:disabled) {
  background: #fff;
}

#join-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.error {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--danger);
}

/* ── Room ────────────────────────────────────────────────── */

#voice-screen {
  display: flex;
  flex-direction: column;
}

.room-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.room-id h2 {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.2;
  margin-top: 4px;
}

.room-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  padding-bottom: 2px;
}

.room-count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  white-space: nowrap;
}

.copy-link {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid var(--border);
  padding: 6px 8px;
}

.copy-link:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

.reconnect-banner {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--live);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

/* ── Channel list ────────────────────────────────────────── */

.channel-list {
  list-style: none;
  margin: 0;
  border-bottom: 1px solid var(--border);
}

.channel-row {
  display: grid;
  grid-template-columns: 3px 1fr 64px auto;
  align-items: stretch;
  gap: 0 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  min-height: 56px;
}

.channel-row:last-child {
  border-bottom: none;
}

.channel-tally {
  background: transparent;
  transition: background 0.1s;
}

.channel-row.speaking .channel-tally {
  background: var(--live);
}

.channel-row.muted .channel-tally,
.channel-row.muted .channel-main,
.channel-row.muted .channel-tag {
  opacity: 0.45;
}

.channel-row.muted {
  opacity: 1;
}

.channel-main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  min-width: 0;
}

.channel-name {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.channel-meter {
  height: 4px;
  background: var(--border);
  overflow: hidden;
}

.channel-meter-fill {
  height: 100%;
  width: 0%;
  background: var(--text-dim);
  transition: width 0.05s linear;
}

.channel-row.speaking .channel-meter-fill {
  background: var(--live);
}

.channel-row.muted .channel-meter-fill {
  background: var(--text-faint);
  width: 0 !important;
}

.channel-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  align-self: center;
  padding-right: 2px;
}

.channel-tag.is-you {
  color: var(--text-dim);
}

.channel-tag.is-live {
  color: var(--live);
}

.channel-tag.is-muted {
  color: var(--danger);
}

.channel-tag.is-wait {
  color: var(--text-faint);
}

button.channel-tag {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
}

.channel-retry {
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.channel-list-empty {
  padding: 48px 0;
  text-align: center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
}

.channel-vol {
  align-self: center;
  width: 64px;
  height: 16px;
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  appearance: none;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.1s;
}

.channel-row:hover .channel-vol,
.channel-row:focus-within .channel-vol {
  opacity: 1;
}

.channel-vol::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--text-faint);
  border: none;
}

.channel-vol::-webkit-slider-thumb {
  appearance: none;
  width: 10px;
  height: 10px;
  margin-top: -3px;
  background: var(--text);
  cursor: pointer;
}

.channel-vol::-moz-range-track {
  height: 4px;
  background: var(--text-faint);
  border: none;
}

.channel-vol::-moz-range-thumb {
  width: 10px;
  height: 10px;
  background: var(--text);
  border: none;
  cursor: pointer;
}

@media (pointer: coarse) {
  .channel-vol {
    opacity: 1;
  }
}

.channel-vol:focus {
  outline: 1px solid var(--border-strong);
  outline-offset: 2px;
}

.channel-vol-slot {
  align-self: center;
}

/* ── Transport ───────────────────────────────────────────── */

.call-controls {
  padding-top: 8px;
}

.device-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 12px;
  padding-top: 8px;
}

.device-row.mic-only {
  grid-template-columns: 1fr;
}

.device-field {
  margin-bottom: 0;
}

select {
  display: block;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 0;
  background: var(--surface);
  color: var(--text);
  font-family: var(--sans);
  font-size: 13px;
}

select:focus {
  outline: 1px solid var(--border-strong);
  outline-offset: -1px;
}

.transport {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  padding-top: 16px;
}

.ptt-hint {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  text-align: center;
}

.remote-audio {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 1px;
  height: 1px;
  opacity: 0.01;
  pointer-events: none;
  overflow: hidden;
}

.transport-btn {
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  text-align: center;
  touch-action: manipulation;
  user-select: none;
  transition: border-color 0.1s, color 0.1s;
}

#mute-btn {
  touch-action: none;
}

.transport-btn:hover {
  border-color: var(--border-strong);
}

.transport-btn.is-muted,
.transport-btn.is-deafened {
  border-color: var(--danger);
  color: var(--danger);
}

.transport-btn.is-talking,
.transport-btn.is-talking:hover {
  border-color: var(--live);
  color: var(--live);
}

.ptt-hint.is-live {
  color: var(--live);
}

.transport-btn-leave:hover {
  border-color: var(--danger);
  color: var(--danger);
}

@media (prefers-reduced-motion: reduce) {
  .channel-meter-fill,
  .channel-tally,
  .channel-vol {
    transition: none;
  }
}