:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1c2330;
  --border: #2a3140;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --accent-hover: #4493f8;
  --disabled: #4a4f57;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  padding: 32px 48px 16px;
  border-bottom: 1px solid var(--border);
}

.topbar h1 {
  margin: 0;
  font-size: 28px;
  letter-spacing: 1px;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  padding: 32px 48px;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.card.active:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--panel-2);
  cursor: pointer;
}

.card.disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.card-body h2 {
  margin: 0 0 4px;
  font-size: 20px;
}

.card-body p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.card-host {
  display: inline-block;
  margin-top: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--muted);
}

.footer {
  text-align: center;
  padding: 24px;
  color: var(--muted);
  font-size: 12px;
  border-top: 1px solid var(--border);
}