body { display: flex; justify-content: center; align-items: center; min-height: 100vh; background: #f0f2f5; padding: 20px; }
.login-box { background: white; padding: 50px 50px 60px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); width: 100%; max-width: 500px; }
.login-box h1 { font-size: 28px; margin-bottom: 35px; text-align: center; color: #333; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 14px; color: #555; }
.form-group input { width: 100%; padding: 12px 14px; border: 1px solid #ddd; border-radius: 4px; font-size: 15px; }
.form-group input:focus { outline: none; border-color: #4a90d9; }
.login-btn { width: 100%; padding: 14px; background: #4a90d9; color: white; border: none; border-radius: 4px; font-size: 16px; cursor: pointer; margin-top: 14px; }
.login-btn:hover { background: #357abd; }
.error-msg { color: #e74c3c; font-size: 13px; text-align: center; margin-bottom: 16px; }

@media (max-width: 576px) {
    .login-box { padding: 30px 24px 40px; max-width: 100%; }
    .login-box h1 { font-size: 22px; margin-bottom: 24px; }
}

.remember { margin-bottom: 0; }
.checkbox-label { display: flex; align-items: center; gap: 6px; font-size: 13px; color: #666; cursor: pointer; }
.checkbox-label input[type="checkbox"] { width: 16px; height: 16px; cursor: pointer; }

.login-notice { margin-top: 16px; padding: 12px 14px; background: #fff3cd; border: 1px solid #ffc107; border-radius: 6px; font-size: 12px; color: #664d03; line-height: 1.6; text-align: center; max-width: 500px; width: 100%; }
.login-notice strong { color: #e74c3c; }