:root {
  --bg: #f7f9fc;
  --card: rgba(255,255,255,.88);
  --text: #1f2937;
  --primary: #1f3c88;
  --border: #dbe3ef;
  --accent: #f59e0b;
  --radius-card: 18px;
  --radius-btn: 16px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: var(--bg); color: var(--text); }
a { color: inherit; text-decoration: none; }
.centered-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.card, .login-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-card); box-shadow: 0 10px 30px rgba(31,60,136,.07); padding: 24px; }
.btn { background: var(--primary); color: white; border: none; border-radius: var(--radius-btn); padding: 12px 18px; cursor: pointer; display: inline-block; }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-small { padding: 8px 12px; font-size: 14px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid.single { grid-template-columns: 1fr; }
.form-grid label { display: grid; gap: 8px; }
.form-grid label.full, .full { grid-column: 1 / -1; }
input, textarea, select { width: 100%; border: 1px solid var(--border); border-radius: 14px; padding: 12px 14px; background: white; }
.alert.error { background: #fff1f2; color: #9f1239; border: 1px solid #fecdd3; border-radius: 14px; padding: 12px; margin-bottom: 12px; }
.clean-list { padding-left: 18px; }