:root {
  --bg: #0b1220;
  --card: rgba(255, 255, 255, 0.06);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --border: rgba(255, 255, 255, 0.12);
  --primary: #4f8cff;
  --danger: #ff4d4f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
  background: radial-gradient(1200px 700px at 10% 10%, rgba(79, 140, 255, 0.35), transparent 55%),
    radial-gradient(900px 600px at 90% 30%, rgba(255, 77, 79, 0.28), transparent 55%),
    radial-gradient(900px 600px at 50% 100%, rgba(0, 255, 198, 0.12), transparent 60%), var(--bg);
  color: var(--text);
}

a {
  color: inherit;
}

.container {
  width: min(920px, calc(100% - 32px));
  margin: 24px auto 48px;
}

.container.wide {
  width: min(1180px, calc(100% - 32px));
}

.header {
  padding: 12px 0 18px;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.sub {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  backdrop-filter: blur(10px);
}

.row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.col {
  flex: 1 1 380px;
}

.label {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 8px;
}

.input {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.22);
  padding: 12px 14px;
  color: var(--text);
  font-size: 16px;
  outline: none;
}

.input:focus {
  border-color: rgba(79, 140, 255, 0.75);
  box-shadow: 0 0 0 3px rgba(79, 140, 255, 0.18);
}

.hint {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.18);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 14px;
  transition: transform 0.04s ease, border-color 0.12s ease, background 0.12s ease;
}

.btn:hover {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.06);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  border-color: rgba(79, 140, 255, 0.6);
  background: rgba(79, 140, 255, 0.2);
}

.btn-danger {
  border-color: rgba(255, 77, 79, 0.7);
  background: rgba(255, 77, 79, 0.18);
}

.btn-ghost {
  background: transparent;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 18px 0;
}

.tips {
  color: var(--muted);
  font-size: 14px;
}

.tip-title {
  color: var(--text);
  font-weight: 600;
  margin-bottom: 8px;
}

.tip-list {
  margin: 0;
  padding-left: 18px;
  line-height: 1.75;
}

.footer {
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
}

.link {
  opacity: 0.85;
}

.call {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.videos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.video-tile {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  min-height: 260px;
}

.tile-title {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 6px 10px;
  font-size: 12px;
  color: var(--muted);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  z-index: 2;
}

.remote-videos {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  padding: 10px;
}

.remote-videos video {
  width: 100%;
  height: 100%;
  min-height: 180px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.25);
}

video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.controls {
  display: grid;
  gap: 10px;
}

.control-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.status {
  font-size: 14px;
  color: var(--muted);
}

.small {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  word-break: break-word;
}

@media (max-width: 900px) {
  .videos {
    grid-template-columns: 1fr;
  }
}