:root {
  --bg: #07080d;
  --card: #10131c;
  --line: rgba(255, 255, 255, 0.08);
  --text: #eef2ff;
  --muted: #94a3b8;
  --accent: #22d3ee;
  --danger: #fb7185;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(34, 211, 238, 0.12), transparent),
    radial-gradient(900px 400px at 100% 0%, rgba(232, 121, 249, 0.1), transparent),
    var(--bg);
  color: var(--text);
  font-family: Outfit, "Segoe UI", sans-serif;
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 22px 80px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.logo {
  display: flex;
  gap: 12px;
  align-items: center;
}

.logo strong {
  display: block;
  font-size: 22px;
}

.logo small {
  color: var(--muted);
}

.pulse {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.6);
  animation: ping 1.6s infinite;
}

@keyframes ping {
  70% {
    box-shadow: 0 0 0 12px transparent;
  }
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.live-readout {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: "JetBrains Mono", monospace;
}

.live-readout strong {
  font-size: 36px;
  letter-spacing: -0.04em;
}

.warn {
  color: #fb7185;
  background: rgba(251, 113, 133, 0.08);
  border: 1px solid rgba(251, 113, 133, 0.25);
  border-radius: 12px;
  padding: 10px 12px;
}

.chip {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.chip.connected {
  color: #4ade80;
  border-color: #4ade80;
}

.chip.scanning,
.chip.connecting,
.chip.reconnecting {
  color: #fbbf24;
  border-color: #fbbf24;
}

.chip.error {
  color: var(--danger);
  border-color: var(--danger);
}

section {
  background: color-mix(in srgb, var(--card) 88%, transparent);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px;
  margin-bottom: 18px;
  backdrop-filter: blur(12px);
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

h2 {
  margin: 0;
  font-size: 18px;
}

.hint {
  color: var(--muted);
  line-height: 1.55;
}

.row,
.form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: end;
}

.form + .form {
  margin-top: 10px;
}

/* A field that should eat the leftover width instead of sitting at the fixed
   140px every other input uses. */
.form label.grow {
  flex: 1 1 240px;
}

.form label.grow input {
  width: 100%;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  margin-top: 12px;
  background: rgba(2, 6, 23, 0.35);
}

.panel[hidden] {
  display: none;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.panel-head h3 {
  margin: 0;
  font-size: 15px;
}

.preview-out {
  position: relative;
  margin-top: 10px;
  border-radius: 12px;
  overflow: hidden;
  background: #05070d;
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
}

.yt-player {
  position: relative;
  margin-top: 10px;
  border-radius: 14px;
  overflow: hidden;
  background: #05070d;
  aspect-ratio: 16 / 9;
  width: 100%;
  min-height: 420px;
  display: grid;
  place-items: center;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

.yt-player.is-portrait {
  aspect-ratio: 9 / 16;
  width: min(360px, 100%);
  max-height: min(720px, 75vh);
  margin-inline: auto;
}

.preview-frame.is-portrait {
  height: min(640px, 70vh);
  aspect-ratio: 9 / 16;
  width: auto;
  max-width: 360px;
  margin-inline: auto;
}

.yt-player img,
.preview-out img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  image-rendering: auto;
}

.yt-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 9px;
  border-radius: 6px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  background: #ef4444;
  color: #fff;
  opacity: 0.92;
}

.yt-badge.is-preview {
  background: rgba(15, 23, 42, 0.82);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.preview-off {
  position: absolute;
  color: var(--muted);
  font-size: 13px;
}

.hint code {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(148, 163, 184, 0.14);
  color: var(--text);
  word-break: break-all;
}

.hint a {
  color: var(--accent);
}

.btn {
  border: 0;
  background: linear-gradient(180deg, #67e8f9, #22d3ee);
  color: #082f36;
  font-weight: 700;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
}

.btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.btn.danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 50%, transparent);
}

.btn:disabled {
  opacity: 0.5;
  cursor: wait;
}

.preview-frame {
  height: 280px;
  border-radius: 18px;
  overflow: hidden;
  background:
    linear-gradient(45deg, #151515 25%, transparent 25%),
    linear-gradient(-45deg, #151515 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #151515 75%),
    linear-gradient(-45deg, transparent 75%, #151515 75%);
  background-size: 28px 28px;
  background-position: 0 0, 0 14px, 14px -14px, -14px 0;
  background-color: #0b0b0b;
}

iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.theme-pills,
.layout-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.layout-pills {
  margin-top: 12px;
}

.pill {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 6px 10px;
  cursor: pointer;
}

.pill.on {
  border-color: var(--accent);
  color: var(--accent);
}

.session-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(108px, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.stat-card {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.stat-card b {
  font-size: 25px;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.stat-card span {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.zone-bars {
  display: grid;
  gap: 7px;
  margin-bottom: 14px;
}

.zone-bar-row {
  display: grid;
  grid-template-columns: 96px 1fr 64px;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.zone-bar-row .track {
  height: 10px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}

.zone-bar-row .fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.5s ease;
}

.zone-bar-row .val {
  text-align: right;
  font-family: "JetBrains Mono", monospace;
  color: var(--muted);
  font-size: 12px;
}

.listen-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.listen-row .btn {
  flex: 0 0 auto;
}

.listen-row.playing #btn-listen {
  background: #134e4a;
  border-color: #2dd4bf;
}

.sound-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.sound-toggle {
  display: flex;
  /* The global label rule stacks children; these controls read better inline. */
  flex-direction: row;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
  cursor: pointer;
  user-select: none;
}

.sound-toggle input {
  flex: 0 0 auto;
}

.sound-toggle input {
  width: 17px;
  height: 17px;
  accent-color: var(--accent);
  cursor: pointer;
}

.sound-toggle.range input[type="range"] {
  /* Undo the checkbox sizing and the global field chrome above. */
  width: 116px;
  height: 22px;
  padding: 0;
  border: 0;
  background: transparent;
}

.sound-toggle.range b {
  color: var(--text);
  font-variant-numeric: tabular-nums;
  min-width: 40px;
}

.devices {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.device {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
}

.device b {
  display: block;
}

.device small {
  color: var(--muted);
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

/* An explicit display always beats the hidden attribute, so the fields that
   swap with the streaming target need this to actually disappear. */
label[hidden] {
  display: none;
}

input,
select {
  background: #0b0f18;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 12px;
  padding: 0 12px;
  width: 140px;
  /* A select sizes itself from its own font metrics, so only a shared explicit
     height keeps it level with the inputs next to it. */
  height: 42px;
  font-family: inherit;
  font-size: 15px;
}

.urls {
  display: grid;
  gap: 8px;
}

.talker-msg {
  justify-self: stretch;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.url-row {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 8px;
  align-items: center;
}

.url-row code {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  background: #0b0f18;
  padding: 10px;
  border-radius: 10px;
  overflow: auto;
}

.steps {
  color: var(--muted);
  line-height: 1.65;
  padding-left: 18px;
}

.steps strong {
  color: var(--text);
}

@media (max-width: 720px) {
  .url-row {
    grid-template-columns: 1fr;
  }
}