/* 认证页面样式 */

.auth-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    position: relative;
}

.auth-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: white;
}

.auth-header h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.auth-header .tagline {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.auth-form {
    width: 100%;
    max-width: 400px;
    background-color: var(--bg-primary);
    border-radius: 16px;
    padding: var(--spacing-xl);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-form h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input {
    width: 100%;
}

.form-group input.error {
    border-color: var(--danger-color);
}

.form-error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--danger-color);
}

/* Turnstile验证码容器 */
.turnstile-container {
    display: flex;
    justify-content: center;
    min-height: 65px;
    margin: var(--spacing-md) 0;
    position: relative;
}

/* 验证码加载动画 */
.captcha-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 登录按钮加载动画 */
.btn-primary .btn-loader {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.loading-text {
    opacity: 0.7;
}

.auth-form button[type="submit"] {
    width: 100%;
    margin-top: var(--spacing-md);
}

.auth-footer {
    margin-top: var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--primary-color);
    font-weight: 500;
}

.auth-footer a:active {
    color: var(--primary-dark);
}

/* 响应式调整 */
@media (max-width: 480px) {
    .auth-container {
        padding: var(--spacing-md);
    }
    
    .auth-form {
        padding: var(--spacing-lg);
    }
    
    .auth-header h1 {
        font-size: 28px;
    }
}