:root {
  --bg: #eef2f7;
  --surface: #ffffff;
  --ink: #0f172a;
  --muted: #4b5563;
  --accent: #0f766e;
  --accent-2: #1d4ed8;
  --danger: #b91c1c;
  --line: #dbe2ea;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top right, #d8f3ff 0, transparent 45%),
    radial-gradient(circle at left bottom, #d9fbe9 0, transparent 40%),
    var(--bg);
  min-height: 100vh;
}

.shell {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 24px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
}

.hero p {
  margin-top: 6px;
  color: var(--muted);
}

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

.controls {
  display: grid;
  gap: 10px;
  max-width: 520px;
}

.field span {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.9rem;
}

input, button {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  font: inherit;
  padding: 10px 12px;
}

select {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  font: inherit;
  padding: 10px 12px;
  background: #fff;
}

button {
  cursor: pointer;
  transition: transform 0.08s ease, opacity 0.2s ease;
}

button:active { transform: scale(0.98); }

.primary {
  background: linear-gradient(135deg, var(--accent), #0891b2);
  color: white;
  border: none;
}

.secondary {
  background: #f8fafc;
}

.danger {
  background: var(--danger);
  color: white;
  border: none;
}

.status {
  margin: 0;
  color: var(--muted);
}

.call.hidden, .hidden { display: none; }

.call-meta {
  display: grid;
  gap: 10px;
}

.invite-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.media-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: 8px;
  margin: 14px 0;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.btn-text {
  white-space: nowrap;
}

.device-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(200px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.tile {
  background: #020617;
  border-radius: 14px;
  overflow: hidden;
  margin: 0;
  position: relative;
  min-height: 160px;
  aspect-ratio: 16 / 9;
}

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

.label {
  position: absolute;
  left: 8px;
  bottom: 8px;
  margin: 0;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(2, 6, 23, 0.65);
  color: white;
  font-size: 0.75rem;
}

@media (max-width: 640px) {
  .shell { padding: 14px; }
  .card { padding: 14px; }
  .invite-row { grid-template-columns: 1fr; }
  .media-actions { grid-template-columns: 1fr; }
  .device-panel { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .tile { min-height: 140px; }
}

@media (min-width: 641px) and (max-width: 920px) {
  .media-actions {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }
  #leave {
    grid-column: 1 / -1;
  }
}