:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --error: #dc2626;
    --success: #16a34a;
    --bg: #f3f4f6;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #d1d5db;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.auth-card {
    background: #fff;
    width: 100%;
    max-width: 420px;
    padding: 36px 32px;
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.auth-card h1 {
    font-size: 22px;
    margin: 0 0 6px;
    text-align: center;
}

.auth-card .subtitle {
    text-align: center;
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.role-switch {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.role-switch label {
    flex: 1;
    text-align: center;
    padding: 8px 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
}

.role-switch input { display: none; }

.role-switch input:checked + span {
    color: var(--primary);
    font-weight: 700;
}

.role-switch label:has(input:checked) {
    border-color: var(--primary);
    background: #eff6ff;
}

.btn-primary {
    width: 100%;
    padding: 11px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s;
}

.btn-primary:hover { background: var(--primary-dark); }

.alert {
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 16px;
}

.alert-error {
    background: #fef2f2;
    color: var(--error);
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: var(--success);
    border: 1px solid #bbf7d0;
}

.auth-footer {
    text-align: center;
    margin-top: 18px;
    font-size: 13px;
    color: var(--muted);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.dashboard {
    max-width: 700px;
    margin: 60px auto;
    background: #fff;
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}

.dashboard h1 { margin-top: 0; }

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 12px;
    background: #eff6ff;
    color: var(--primary);
    font-weight: 600;
}

.logout-link {
    color: var(--error);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
}

@media (max-width: 480px) {
    body { padding: 12px; align-items: flex-start; }
    .auth-card { padding: 24px 18px; margin-top: 20px; }
    .dashboard { padding: 22px 18px; margin: 24px auto; }
    .role-switch { flex-direction: column; }
}