:root {
  --bg: #0f1b2d;
  --card: #162339;
  --text: #e6edf3;
  --muted: #9fb3c8;
  --accent: #4fd1c5;
  --danger: #ff6b6b;
  --warn: #f6ad55;
  --ok: #48bb78;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #1b2a44 0%, #0f1b2d 50%, #0b1421 100%);
  color: var(--text);
  font-family: "Segoe UI", Tahoma, sans-serif;
  min-height: 100vh;
  display: grid;
  place-items: center;
}

.card {
  width: min(560px, 90vw);
  background: var(--card);
  padding: 32px;
  border-radius: 16px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

h1 {
  margin: 0 0 8px;
  font-size: 28px;
  letter-spacing: 0.5px;
}

.subtitle {
  margin: 0 0 24px;
  color: var(--muted);
}

.status {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.pill {
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

.pill.running {
  background: rgba(72, 187, 120, 0.2);
  color: var(--ok);
}

.pill.starting {
  background: rgba(79, 209, 197, 0.15);
  color: var(--accent);
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.pill.exited,
.pill.stopped {
  background: rgba(246, 173, 85, 0.2);
  color: var(--warn);
}

.pill.error,
.pill.missing {
  background: rgba(255, 107, 107, 0.2);
  color: var(--danger);
}

.pill.unknown {
  background: rgba(159, 179, 200, 0.15);
  color: var(--muted);
}

.pill.joinable {
  background: rgba(72, 187, 120, 0.2);
  color: var(--ok);
}

.pill.not-joinable {
  background: rgba(246, 173, 85, 0.2);
  color: var(--warn);
}

.actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.btn {
  padding: 12px 16px;
  border: none;
  border-radius: 10px;
  background: #203048;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease;
}

.btn-accent {
  background: #21455a;
  border: 1px solid rgba(79, 209, 197, 0.35);
}

.btn-accent:hover {
  background: #2b5a74;
}

.btn:hover {
  background: #2b3f5f;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.message {
  min-height: 20px;
  color: var(--muted);
  margin-bottom: 16px;
}

.ark-status {
  margin-bottom: 18px;
}

.meta {
  font-size: 13px;
  color: var(--muted);
  display: grid;
  gap: 6px;
}