:root {
  color-scheme: light dark;
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

#app {
  width: 100%;
  max-width: 720px;
  padding: 2rem;
}

.loading, .error {
  text-align: center;
  color: var(--muted);
}

.error { color: #f87171; }

.brand {
  text-align: center;
  margin-bottom: 2rem;
}

.brand h1 {
  font-size: 2rem;
  margin: 0 0 0.25rem;
  letter-spacing: -0.02em;
}

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

.login-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.header-row span {
  color: var(--muted);
  font-size: 0.9rem;
}

.header-row button {
  background: transparent;
  border: 1px solid var(--muted);
  color: var(--text);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  cursor: pointer;
}

.header-row button:hover { border-color: var(--accent); color: var(--accent); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.card {
  display: block;
  background: var(--card);
  border-radius: 12px;
  padding: 1.25rem;
  text-decoration: none;
  color: var(--text);
  border: 1px solid transparent;
  transition: border-color 0.15s ease;
}

.card:hover { border-color: var(--accent); }

.card h2 { margin: 0 0 0.35rem; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.85rem; }