/* 登录注册页面样式 */
.auth-page {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}

/* 语言切换器固定定位 */
.lang-switcher-fixed {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 100;
}

.auth-container {
    width: 100%;
    max-width: 420px;
    background: var(--bg-white);
    border-radius: 24px;
    padding: 40px 30px;
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-page);
    border-radius: 50%;
    color: var(--text-primary);
    text-decoration: none;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: var(--primary-color);
    color: #fff;
}

.brand-logo {
    margin-bottom: 16px;
}

.logo-text {
    font-size: 32px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-title {
    font-size: 28px;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.auth-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 登录方式切换标签 */
.login-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
    background: var(--bg-page);
    padding: 6px;
    border-radius: 12px;
}

.login-tabs .tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.login-tabs .tab i {
    font-size: 16px;
}

.login-tabs .tab.active {
    background: #fff;
    color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.login-tabs .tab:hover:not(.active) {
    background: rgba(255, 255, 255, 0.5);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.form-label i {
    color: var(--primary-color);
    width: 16px;
}

.form-input {
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s;
    background: var(--bg-white);
    color: var(--text-primary);
}

.form-input:focus {
    border-color: var(--primary-color);
}

.password-input {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 16px;
    cursor: pointer;
}

.input-with-button {
    display: flex;
    gap: 8px;
}

.input-with-button .form-input {
    flex: 1;
}

.btn-code {
    background: var(--primary-color);
    color: var(--bg-white);
    border: none;
    border-radius: 8px;
    padding: 0 15px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.3s;
}

.btn-code:disabled {
    background: var(--text-light);
    cursor: not-allowed;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-wrapper .checkbox {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-wrapper a {
    color: var(--primary-color);
    text-decoration: none;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 13px;
}

.btn-submit {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    border: none;
    border-radius: 25px;
    padding: 14px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.divider {
    text-align: center;
    position: relative;
    margin: 10px 0;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    position: relative;
    background: var(--bg-white);
    padding: 0 15px;
    font-size: 13px;
    color: var(--text-light);
}

.social-login {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-btn {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-page);
    border: none;
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 22px;
    cursor: pointer;
    transition: all 0.3s;
}

.social-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

.social-btn.wechat:hover {
    color: #07c160;
}

.social-btn.qq:hover {
    color: #12b7f5;
}

.social-btn.alipay:hover {
    color: #1677ff;
}

.auth-footer {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 10px;
}

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

/* 国家代码选择器 */
.phone-input-group {
    display: flex;
    gap: 10px;
}

.country-code {
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 14px;
    background: var(--bg-white);
    color: var(--text-primary);
    cursor: pointer;
    outline: none;
    transition: border-color 0.3s;
}

.country-code:focus {
    border-color: var(--primary-color);
}

.phone-input-group .form-input {
    flex: 1;
}

/* 第三方登录区域 */
.social-login-section {
    margin-top: 30px;
}

.social-login-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.social-btn.google:hover {
    color: #DB4437;
}

.social-btn.facebook:hover {
    color: #4267B2;
}

.social-btn.twitter:hover {
    color: #1DA1F2;
}

.social-btn.apple:hover {
    color: #000;
}

.social-login-more {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.social-btn-outline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px;
    background: transparent;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s;
}

.social-btn-outline:hover {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.05);
    transform: translateY(-2px);
}

.social-btn-outline.discord:hover {
    color: #5865F2;
    border-color: #5865F2;
}

.social-btn-outline.telegram:hover {
    color: #0088cc;
    border-color: #0088cc;
}

.social-btn-outline.line:hover {
    color: #00B900;
    border-color: #00B900;
}

.social-btn-outline.zalo:hover {
    color: #0068FF;
    border-color: #0068FF;
}

/* 安全提示 */
.security-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
    padding: 12px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 12px;
    font-size: 13px;
    color: var(--success-color);
}

.security-notice i {
    font-size: 16px;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .auth-container {
        padding: 30px 20px;
    }
    
    .social-login-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .lang-switcher-fixed {
        top: 10px;
        right: 10px;
    }
}

/* 暗黑模式支持 */
@media (prefers-color-scheme: dark) {
    .social-btn-outline {
        background: rgba(255, 255, 255, 0.05);
    }
    
    .social-btn-outline:hover {
        background: rgba(79, 70, 229, 0.1);
    }
}