body { font-family: Arial, sans-serif; background: #f5f7fb; margin: 0; padding: 0; }
.login-card { max-width: 360px; margin: 10vh auto; background: #fff; padding: 30px; border-radius: 10px; box-shadow: 0 6px 20px rgba(0,0,0,0.08); }
h1 { margin: 0 0 10px; font-size: 20px; }
label { display: block; margin: 15px 0 6px; font-weight: 600; }
input[type="password"], input[type="text"] { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 6px; }
button { margin-top: 15px; width: 100%; padding: 10px; background: #0073aa; color: #fff; border: none; border-radius: 6px; font-weight: 600; cursor: pointer; }
.error { margin-top: 10px; color: #b00020; font-size: 13px; }
.note { margin-top: 15px; font-size: 12px; color: #666; }