:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --border: #2d3a4f;
  --text: #e7ecf3;
  --muted: #93a4ba;
  --accent: #3b82f6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at top, #172033 0%, var(--bg) 55%);
  color: var(--text);
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.shell { width: min(420px, 100%); }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}

h1 {
  margin: 0 0 0.35rem;
  font-size: 1.75rem;
}

.subtitle {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.login-form {
  display: grid;
  gap: 1rem;
}

.login-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

input, button {
  background: #121a24;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.85rem;
  font: inherit;
}

button {
  cursor: pointer;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

button:hover { filter: brightness(1.08); }

button.ghost {
  margin-top: 1.25rem;
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
  width: 100%;
}

.links {
  display: grid;
  gap: 0.75rem;
}

.card-link {
  display: grid;
  gap: 0.25rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  background: #121a24;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

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

.card-link:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.error {
  margin: 1rem 0 0;
  color: #f87171;
  font-size: 0.9rem;
}

.hidden { display: none; }