:root {
  --ink: #0f172a;
  --paper: #f5f7fb;
  --accent: #2f5af0;
  --line: #dde1ea;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

.login-card {
  max-width: 340px;
  margin: 80px auto;
  padding: 32px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.muted { color: #64748b; font-size: 14px; }

form label { display: block; margin: 14px 0 0; font-size: 14px; }
form input { display: block; margin-top: 4px; padding: 8px; width: 100%; border: 1px solid var(--line); border-radius: 5px; }

.btn {
  display: inline-block;
  margin-top: 20px;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border: none;
  border-radius: 5px;
  font-size: 14px;
  cursor: pointer;
  width: 100%;
}

.dashboard { max-width: 640px; margin: 60px auto; padding: 0 20px; }

.stat-grid { display: flex; gap: 16px; margin-top: 24px; }
.stat-card {
  flex: 1;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
}
.stat-card strong { display: block; font-size: 28px; }
.stat-card span { font-size: 13px; color: #64748b; }

.site-footer {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 20px 40px;
  text-align: center;
  font-size: 13px;
  color: #64748b;
}
.site-footer nav { margin-top: 8px; }
.site-footer nav a { color: #64748b; margin: 0 8px; }
.site-footer nav a:hover { color: var(--accent); }

@media (max-width: 420px) {
  .login-card { margin: 40px 16px; padding: 24px; max-width: none; }
  .dashboard { margin: 32px auto; padding: 0 16px; }
  .stat-grid { flex-direction: column; }
  .site-footer { padding: 20px 16px 32px; }
}