:root { font-family: system-ui, sans-serif; }
body { margin: 0; background: #0f172a; color: #e2e8f0; }
.view { max-width: 360px; margin: 0 auto; padding: 24px; }
h1 { text-align: center; }
input { width: 100%; box-sizing: border-box; padding: 12px; margin: 6px 0;
  border-radius: 8px; border: 1px solid #334155; background: #1e293b; color: #e2e8f0; font-size: 18px; }
button { cursor: pointer; border: 0; border-radius: 8px; padding: 12px; font-size: 16px;
  background: #334155; color: #e2e8f0; }
.keys { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 10px 0; }
.keys button { padding: 16px; font-size: 20px; }
.call { width: 100%; background: #16a34a; color: white; font-size: 18px; }
.hangup { background: #dc2626; color: white; }
header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.status { padding: 4px 10px; border-radius: 999px; background: #1e293b; font-size: 14px; }
.status.ready { background: #14532d; }
.status.busy { background: #7c2d12; }
.link { background: none; color: #94a3b8; padding: 4px; }
.error { color: #f87171; }
.incoming, .active { text-align: center; }
.active-keys { display: flex; gap: 8px; margin-top: 12px; }
.active-keys button { flex: 1; }
#timer { font-size: 28px; display: block; margin: 8px 0; }