:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --primary: #2b3a55;
  --primary-hover: #1e2a40;
  --border: #e2e4e9;
  --danger: #b3261e;
}

* { box-sizing: border-box; }

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

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 40px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.card h1 {
  font-size: 1.3rem;
  margin: 0 0 24px;
  text-align: center;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 6px;
}

input[type="text"], input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  margin-bottom: 18px;
}

input:focus { outline: 2px solid var(--primary); outline-offset: 1px; }

button {
  width: 100%;
  padding: 11px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover { background: var(--primary-hover); }

.error {
  background: #fdecea;
  color: var(--danger);
  border: 1px solid #f5c6c2;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 0.9rem;
  margin-bottom: 18px;
}

.dashboard { text-align: center; }
.dashboard p { color: var(--muted); }
.logout-form { margin-top: 20px; }
.logout-form button { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.logout-form button:hover { background: #f0f0f2; color: var(--text); }