:root {
  color-scheme: light;
  --bg: #f2eee6;
  --panel: rgba(255, 252, 246, 0.9);
  --ink: #1f2430;
  --muted: #5f6573;
  --accent: #b4492d;
  --accent-dark: #7f2b17;
  --line: rgba(31, 36, 48, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(180, 73, 45, 0.18), transparent 35%),
    linear-gradient(135deg, #faf7f2 0%, var(--bg) 55%, #e7e0d4 100%);
}

.shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 32px auto;
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(300px, 380px) 1fr;
}

.panel,
.video-panel {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: 0 24px 80px rgba(31, 36, 48, 0.1);
}

.panel {
  padding: 28px;
}

.video-panel {
  padding: 18px;
  min-height: 420px;
}

.eyebrow {
  margin: 0 0 8px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
}

.summary {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.field {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

.field span,
.status-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
}

.field input {
  width: 100%;
  border: 1px solid rgba(31, 36, 48, 0.16);
  border-radius: 14px;
  padding: 14px 16px;
  font: inherit;
  background: rgba(255, 255, 255, 0.85);
  color: var(--ink);
}

.primary {
  border: 0;
  border-radius: 16px;
  padding: 15px 18px;
  font: inherit;
  font-weight: 700;
  color: #fff6f2;
  background: linear-gradient(135deg, var(--accent) 0%, #d2693e 100%);
  cursor: pointer;
}

.primary:hover {
  filter: brightness(1.03);
}

.button-row {
  display: grid;
  gap: 12px;
  margin-top: 22px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.secondary {
  border: 1px solid rgba(31, 36, 48, 0.18);
  border-radius: 16px;
  padding: 15px 18px;
  font: inherit;
  font-weight: 700;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.78);
  cursor: pointer;
}

.secondary:hover {
  background: rgba(255, 255, 255, 0.94);
}

.status-grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.diagnostics-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.diagnostic-card {
  border-radius: 18px;
  padding: 14px 16px;
  background: rgba(31, 36, 48, 0.04);
  border: 1px solid rgba(31, 36, 48, 0.08);
}

.status-text {
  margin: 8px 0 0;
  font-size: 15px;
  font-weight: 600;
}

.error-text {
  margin: 8px 0 0;
  min-height: 72px;
  border-radius: 14px;
  padding: 12px 14px;
  background: rgba(31, 36, 48, 0.05);
  color: #7e2f1f;
  white-space: pre-wrap;
}

#remoteVideo {
  width: 100%;
  min-height: 100%;
  border-radius: 20px;
  background: #11141b;
  object-fit: contain;
}

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .video-panel {
    min-height: 320px;
  }

  .button-row {
    grid-template-columns: 1fr;
  }

  .diagnostics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .diagnostics-grid {
    grid-template-columns: 1fr;
  }
}