/**
 * 柠檬认证页面 - 现代化登录注册样式
 * 专业、现代、用户友好的设计
 * 优化的交互体验和视觉效果
 */

/* ===== 认证页面特有变量 ===== */
:root {
    /* 间距变量兼容性映射 */
    --lemon-space-xs: var(--lemon-spacing-xs);
    --lemon-space-sm: var(--lemon-spacing-sm);
    --lemon-space-md: var(--lemon-spacing-md);
    --lemon-space-lg: var(--lemon-spacing-lg);
    --lemon-space-xl: var(--lemon-spacing-xl);
    --lemon-space-2xl: var(--lemon-spacing-2xl);
    --lemon-space-3xl: var(--lemon-spacing-3xl);

    /* 认证页面特有颜色 */
    --lemon-primary-dark: #3730a3;
    --lemon-secondary-light: #8b5cf6;
    --lemon-secondary-dark: #5b21b6;

    /* 认证页面特有渐变 */
    --lemon-gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --lemon-gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --lemon-gradient-success: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --lemon-gradient-warning: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --lemon-gradient-glass: linear-gradient(145deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);

    /* 认证页面特有文字颜色 */
    --lemon-text-tertiary: #718096;
    --lemon-text-inverse: #ffffff;
    --lemon-text-accent: var(--lemon-primary);

    /* 认证页面特有背景颜色 */
    --lemon-bg-tertiary: #edf2f7;
    --lemon-bg-overlay: rgba(0, 0, 0, 0.5);
    --lemon-bg-glass: rgba(255, 255, 255, 0.1);

    /* 认证页面特有边框颜色 */
    --lemon-border-focus: var(--lemon-primary);

    /* 认证页面特有阴影 */
    --lemon-shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --lemon-shadow-glow: 0 0 20px rgba(79, 70, 229, 0.3);

    /* 认证页面特有动画 */
    --lemon-transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ===== 主页面容器 ===== */
.lemon-auth-page {
    min-height: 100vh;
    background: var(--lemon-gradient-primary);
    position: relative;
    overflow-x: hidden;
    font-family: var(--lemon-font-family);
    font-feature-settings: 'kern' 1, 'liga' 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
}

/* 背景装饰元素 */
.auth-background-decoration {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.floating-element {
    position: absolute;
    border-radius: var(--lemon-radius-full);
    background: var(--lemon-bg-glass);
    backdrop-filter: blur(10px);
    animation: float 6s ease-in-out infinite;
}

.floating-element-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.floating-element-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 8%;
    animation-delay: 2s;
}

.floating-element-3 {
    width: 200px;
    height: 200px;
    bottom: 20%;
    left: 10%;
    animation-delay: 4s;
}

.floating-element-4 {
    width: 100px;
    height: 100px;
    top: 30%;
    right: 20%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) translateX(0px) rotate(0deg);
        opacity: 0.7;
    }
    25% {
        transform: translateY(-20px) translateX(10px) rotate(2deg);
        opacity: 0.8;
    }
    50% {
        transform: translateY(-40px) translateX(-5px) rotate(-1deg);
        opacity: 0.6;
    }
    75% {
        transform: translateY(-10px) translateX(15px) rotate(1deg);
        opacity: 0.9;
    }
}

/* 主容器 */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--lemon-spacing-lg);
    position: relative;
    z-index: 1;
    flex: 1;
}

.auth-content-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1400px;
    width: 100%;
    background: var(--lemon-bg-primary);
    border-radius: var(--lemon-radius-3xl);
    box-shadow: var(--lemon-shadow-xl);
    overflow: hidden;
    min-height: 600px;
    position: relative;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: slideInScale 0.8s var(--lemon-transition-bounce);
}

@keyframes slideInScale {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===== 品牌展示区域 ===== */
.auth-brand-panel {
    background: var(--lemon-gradient-primary);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--lemon-spacing-3xl);
}

.auth-brand-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(255,255,255,0.1) 0%, transparent 60%),
        radial-gradient(circle at 80% 80%, rgba(255,255,255,0.08) 0%, transparent 60%),
        radial-gradient(circle at 50% 50%, rgba(255,255,255,0.05) 0%, transparent 80%);
    pointer-events: none;
}

.brand-showcase {
    text-align: center;
    position: relative;
    z-index: 2;
    color: var(--lemon-text-inverse);
    max-width: 400px;
    animation: slideInLeft 0.8s var(--lemon-transition-bounce) 0.2s both;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 品牌LOGO区域 */
.brand-logo-section {
    margin-bottom: var(--lemon-spacing-3xl);
}

.custom-logo-wrapper img {
    max-height: 80px;
    width: auto;
    filter: brightness(0) invert(1);
}

.default-logo h1 {
    font-size: var(--lemon-font-size-3xl);
    font-weight: 800;
    margin: 0;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 欢迎信息 */
.welcome-section {
    margin-bottom: var(--lemon-spacing-2xl);
}

.welcome-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--lemon-spacing-lg);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.title-highlight {
    background: var(--lemon-gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.title-highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--lemon-gradient-accent);
    border-radius: var(--lemon-radius-full);
    opacity: 0.6;
}

.welcome-subtitle {
    font-size: var(--lemon-font-size-lg);
    opacity: 0.9;
    line-height: 1.6;
    font-weight: 400;
}



/* ===== 表单区域样式 ===== */
.auth-form-panel {
    padding: var(--lemon-spacing-3xl);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--lemon-bg-primary);
    position: relative;
}

.auth-form-panel::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 1px;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, var(--lemon-border-light) 50%, transparent 100%);
}

.form-container {
    width: 100%;
    max-width: 450px;
    animation: slideInRight 0.8s var(--lemon-transition-bounce) 0.4s both;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 表单头部 */
.form-header {
    text-align: center;
    margin-bottom: var(--lemon-spacing-2xl);
}

.form-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--lemon-spacing-md);
    font-size: var(--lemon-font-size-2xl);
    font-weight: 800;
    color: var(--lemon-text-primary);
    margin-bottom: var(--lemon-spacing-lg);
    letter-spacing: -0.02em;
}

.title-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--lemon-radius-lg);
    background: var(--lemon-gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--lemon-font-size-lg);
}

.form-subtitle {
    color: var(--lemon-text-secondary);
    font-size: var(--lemon-font-size-base);
    font-weight: 400;
    line-height: 1.5;
}

.switch-link {
    color: var(--lemon-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--lemon-transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: var(--lemon-spacing-xs);
    border-radius: var(--lemon-radius-sm);
    padding: var(--lemon-spacing-xs) var(--lemon-spacing-sm);
}

.switch-link:hover {
    color: var(--lemon-primary-dark);
    background: rgba(79, 70, 229, 0.1);
    transform: translateX(2px);
}

.switch-link i {
    font-size: var(--lemon-font-size-sm);
    transition: transform var(--lemon-transition-smooth);
}

.switch-link:hover i {
    transform: translateX(2px);
}

/* ===== 认证方式标签页 ===== */
.auth-method-tabs {
    margin-bottom: var(--lemon-space-2xl);
}

.tab-navigation {
    display: flex;
    background: var(--lemon-bg-secondary);
    border-radius: var(--lemon-radius-xl);
    padding: var(--lemon-space-xs);
    gap: var(--lemon-space-xs);
    box-shadow: var(--lemon-shadow-inner);
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--lemon-space-sm);
    padding: var(--lemon-space-lg);
    background: transparent;
    border: none;
    border-radius: var(--lemon-radius-lg);
    font-size: var(--lemon-font-size-sm);
    font-weight: 600;
    color: var(--lemon-text-secondary);
    cursor: pointer;
    transition: all var(--lemon-transition-smooth);
    position: relative;
    overflow: hidden;
    font-family: inherit;
}

.tab-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.6s ease;
}

.tab-btn:hover::before {
    left: 100%;
}

.tab-btn:hover {
    color: var(--lemon-text-primary);
    background: rgba(255, 255, 255, 0.5);
}

.tab-btn.active {
    background: var(--lemon-gradient-primary);
    color: white;
    box-shadow: var(--lemon-shadow-md);
    transform: translateY(-1px);
}

.tab-btn.active::before {
    display: none;
}

.tab-btn i {
    font-size: var(--lemon-font-size-base);
    transition: transform var(--lemon-transition-smooth);
}

.tab-btn.active i {
    transform: scale(1.1);
}

.tab-btn span {
    font-size: var(--lemon-font-size-sm);
    font-weight: 600;
}

/* ===== 标签页面板 ===== */
.tab-panel {
    display: none;
    animation: fadeInSlide 0.5s var(--lemon-transition-smooth);
}

.tab-panel.active {
    display: block;
}

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

/* ===== 表单样式 ===== */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--lemon-space-xl);
}

.form-group {
    position: relative;
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--lemon-space-xs);
    font-size: var(--lemon-font-size-sm);
    font-weight: 600;
    color: var(--lemon-text-primary);
    margin-bottom: var(--lemon-space-md);
}

.label-text {
    flex: 1;
}

.required-indicator {
    color: #ef4444;
    font-weight: 700;
}

/* 输入框组 */
.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 16px;
    color: var(--lemon-text-secondary);
    font-size: var(--lemon-font-size-base);
    z-index: 3;
    transition: all var(--lemon-transition-smooth);
    pointer-events: none;
}

.form-input {
    width: 100%;
    padding: 16px 20px 16px 52px;
    border: 2px solid var(--lemon-border-light);
    border-radius: var(--lemon-radius-xl);
    font-size: var(--lemon-font-size-base);
    font-family: inherit;
    background: var(--lemon-bg-primary);
    color: var(--lemon-text-primary);
    transition: all var(--lemon-transition-smooth);
    position: relative;
    z-index: 2;
}

.form-input:focus {
    outline: none;
    border-color: var(--lemon-primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    transform: translateY(-2px);
    background: var(--lemon-bg-primary);
}

.input-group:focus-within .input-icon {
    color: var(--lemon-primary);
    transform: scale(1.1);
}

.form-input::placeholder {
    color: var(--lemon-text-tertiary);
    opacity: 0.8;
    font-weight: 400;
}

/* 输入框边框动画 */
.input-border {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--lemon-gradient-primary);
    border-radius: var(--lemon-radius-full);
    transition: all var(--lemon-transition-smooth);
    transform: translateX(-50%);
    z-index: 1;
}

.input-group:focus-within .input-border {
    width: 100%;
}

/* 密码显示/隐藏按钮 */
.password-toggle {
    position: absolute;
    right: 16px;
    background: none;
    border: none;
    color: var(--lemon-text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--lemon-radius-md);
    transition: all var(--lemon-transition-smooth);
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle:hover {
    color: var(--lemon-primary);
    background: rgba(79, 70, 229, 0.1);
    transform: scale(1.1);
}

.password-toggle i {
    font-size: var(--lemon-font-size-base);
}

/* 表单选项 */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--lemon-space-md);
    margin: var(--lemon-space-lg) 0;
}

/* 自定义复选框 */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--lemon-space-sm);
    cursor: pointer;
    font-size: var(--lemon-font-size-sm);
    color: var(--lemon-text-secondary);
}

.checkbox-input {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--lemon-border-medium);
    border-radius: var(--lemon-radius-sm);
    background: var(--lemon-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--lemon-transition-smooth);
    position: relative;
}

.checkbox-custom i {
    font-size: 12px;
    color: white;
    opacity: 0;
    transform: scale(0);
    transition: all var(--lemon-transition-smooth);
}

.checkbox-input:checked + .checkbox-custom {
    background: var(--lemon-gradient-primary);
    border-color: var(--lemon-primary);
    box-shadow: var(--lemon-shadow-glow);
}

.checkbox-input:checked + .checkbox-custom i {
    opacity: 1;
    transform: scale(1);
}

.checkbox-label {
    font-weight: 500;
    transition: color var(--lemon-transition-smooth);
    user-select: none;
}

.checkbox-wrapper:hover .checkbox-label {
    color: var(--lemon-text-primary);
}

.forgot-link {
    color: var(--lemon-primary);
    text-decoration: none;
    font-size: var(--lemon-font-size-sm);
    font-weight: 500;
    transition: all var(--lemon-transition-smooth);
    padding: var(--lemon-space-xs) var(--lemon-space-sm);
    border-radius: var(--lemon-radius-md);
}

.forgot-link:hover {
    color: var(--lemon-primary-dark);
    background: rgba(79, 70, 229, 0.1);
    transform: translateX(2px);
}

/* 验证码输入组 */
.verification-group {
    display: flex;
    gap: var(--lemon-space-md);
    align-items: flex-end;
}

.verification-group .input-group {
    flex: 1;
}

.verification-btn {
    padding: 16px 24px;
    background: var(--lemon-gradient-primary);
    color: white;
    border: none;
    border-radius: var(--lemon-radius-xl);
    font-size: var(--lemon-font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--lemon-transition-smooth);
    white-space: nowrap;
    min-width: 140px;
    position: relative;
    overflow: hidden;
    font-family: inherit;
    height: 56px;
}

.verification-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s ease;
}

.verification-btn:hover::before {
    left: 100%;
}

.verification-btn:hover {
    background: var(--lemon-gradient-secondary);
    transform: translateY(-2px);
    box-shadow: var(--lemon-shadow-lg);
}

.verification-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.verification-btn:disabled::before {
    display: none;
}

/* 表单行样式 */
.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--lemon-spacing-md);
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--lemon-spacing-sm);
}

.form-check-input {
    width: 18px;
    height: 18px;
    border: 2px solid #e2e8f0;
    border-radius: var(--lemon-radius-sm);
    background: white;
    cursor: pointer;
    transition: all var(--lemon-transition-smooth);
}

.form-check-input:checked {
    background: var(--lemon-primary);
    border-color: var(--lemon-primary);
}

.form-check-input:checked::after {
    content: '✓';
    color: white;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.form-check-label {
    font-size: 0.9rem;
    color: var(--lemon-text-secondary);
    cursor: pointer;
    line-height: 1.4;
}

.form-check-label a {
    color: var(--lemon-primary);
    text-decoration: none;
    font-weight: 500;
}

.form-check-label a:hover {
    text-decoration: underline;
}

.forgot-password-link {
    color: var(--lemon-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--lemon-transition-smooth);
}

.forgot-password-link:hover {
    color: var(--lemon-secondary);
    text-decoration: underline;
}

/* 字段提示样式 */
.field-tip {
    font-size: 0.8rem;
    color: var(--lemon-text-secondary);
    opacity: 0.8;
    margin-top: var(--lemon-spacing-sm);
}

/* 密码强度指示器 */
.password-strength {
    margin-top: var(--lemon-spacing-sm);
}

.strength-bar {
    width: 100%;
    height: 4px;
    background: #e2e8f0;
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: var(--lemon-spacing-sm);
}

.strength-fill {
    height: 100%;
    border-radius: 2px;
    transition: all var(--lemon-transition-smooth);
    width: 0%;
}

.strength-fill.weak {
    width: 33%;
    background: #ef4444;
}

.strength-fill.medium {
    width: 66%;
    background: #f59e0b;
}

.strength-fill.strong {
    width: 100%;
    background: #10b981;
}

.strength-text {
    font-size: 0.8rem;
    color: var(--lemon-text-secondary);
}

.strength-level.weak {
    color: #ef4444;
}

.strength-level.medium {
    color: #f59e0b;
}

.strength-level.strong {
    color: #10b981;
}

/* ===== 提交按钮 ===== */
.submit-btn {
    width: 100%;
    padding: 18px 32px;
    background: var(--lemon-gradient-primary);
    color: white;
    border: none;
    border-radius: var(--lemon-radius-xl);
    font-family: inherit;
    font-size: var(--lemon-font-size-base);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--lemon-transition-smooth);
    position: relative;
    overflow: hidden;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--lemon-shadow-md);
    margin-top: var(--lemon-space-lg);
    user-select: none;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s ease;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    background: var(--lemon-gradient-secondary);
    transform: translateY(-3px);
    box-shadow: var(--lemon-shadow-xl);
}

.submit-btn:active {
    transform: translateY(-1px);
    box-shadow: var(--lemon-shadow-lg);
}

.btn-content {
    display: flex;
    align-items: center;
    gap: var(--lemon-space-sm);
    transition: all var(--lemon-transition-smooth);
}

.btn-loading {
    display: flex;
    align-items: center;
    gap: var(--lemon-space-sm);
    color: rgba(255, 255, 255, 0.9);
}

.btn-loading i {
    animation: spin 1s linear infinite;
}

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

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
    background: var(--lemon-text-tertiary);
}

.submit-btn:disabled::before {
    display: none;
}

/* ===== 微信登录区域 ===== */
.wechat-login-area {
    text-align: center;
    padding: var(--lemon-space-lg) 0;
}

.qr-code-section {
    margin-bottom: var(--lemon-space-3xl);
}

.qr-container {
    width: 220px;
    height: 220px;
    margin: 0 auto var(--lemon-space-lg);
    background: linear-gradient(145deg, var(--lemon-bg-secondary) 0%, var(--lemon-bg-tertiary) 100%);
    border: 3px solid var(--lemon-border-light);
    border-radius: var(--lemon-radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--lemon-shadow-md);
}

.qr-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--lemon-space-lg);
    color: var(--lemon-text-secondary);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--lemon-border-light);
    border-top: 4px solid var(--lemon-primary);
    border-radius: var(--lemon-radius-full);
    animation: spin 1s linear infinite;
}

.qr-loading p {
    margin: 0;
    font-size: var(--lemon-font-size-sm);
    font-weight: 500;
}

.qr-container img {
    max-width: 90%;
    max-height: 90%;
    border-radius: var(--lemon-radius-lg);
}

.qr-actions {
    display: flex;
    justify-content: center;
}

.refresh-btn {
    padding: var(--lemon-space-sm) var(--lemon-space-lg);
    background: var(--lemon-bg-secondary);
    border: 2px solid var(--lemon-border-medium);
    border-radius: var(--lemon-radius-lg);
    color: var(--lemon-text-secondary);
    font-size: var(--lemon-font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--lemon-transition-smooth);
    display: flex;
    align-items: center;
    gap: var(--lemon-space-sm);
}

.refresh-btn:hover {
    background: var(--lemon-bg-primary);
    border-color: var(--lemon-primary);
    color: var(--lemon-primary);
    transform: translateY(-2px);
}

/* 微信登录步骤 */
.wechat-steps {
    display: flex;
    justify-content: space-between;
    gap: var(--lemon-space-lg);
    margin-bottom: var(--lemon-space-3xl);
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--lemon-space-md);
    flex: 1;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--lemon-gradient-primary);
    color: white;
    border-radius: var(--lemon-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--lemon-font-size-base);
    box-shadow: var(--lemon-shadow-sm);
}

.step-content h4 {
    margin: 0 0 var(--lemon-space-xs) 0;
    font-size: var(--lemon-font-size-sm);
    font-weight: 600;
    color: var(--lemon-text-primary);
}

.step-content p {
    margin: 0;
    font-size: var(--lemon-font-size-xs);
    color: var(--lemon-text-secondary);
    line-height: 1.4;
}

/* 微信状态指示器 */
.wechat-status-indicator {
    padding: var(--lemon-space-lg);
    background: rgba(79, 70, 229, 0.1);
    border: 2px solid rgba(79, 70, 229, 0.2);
    border-radius: var(--lemon-radius-xl);
    color: var(--lemon-primary);
    font-weight: 600;
}

.status-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--lemon-space-md);
}

.status-icon {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
}

.status-icon i {
    font-size: var(--lemon-font-size-lg);
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.1);
    }
}

/* ===== 其他登录选项 ===== */
.alternative-options {
    margin-top: var(--lemon-space-2xl);
}

.divider-line {
    text-align: center;
    margin-bottom: var(--lemon-space-xl);
    position: relative;
}

.divider-line::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent 0%, var(--lemon-border-light) 50%, transparent 100%);
}

.divider-line span {
    background: var(--lemon-bg-primary);
    padding: 0 var(--lemon-space-lg);
    color: var(--lemon-text-secondary);
    font-size: var(--lemon-font-size-sm);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.quick-actions {
    display: flex;
    gap: var(--lemon-space-lg);
}

.quick-action {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--lemon-space-md);
    padding: var(--lemon-space-xl);
    background: var(--lemon-bg-secondary);
    border: 2px solid var(--lemon-border-light);
    border-radius: var(--lemon-radius-xl);
    text-decoration: none;
    color: var(--lemon-text-secondary);
    transition: all var(--lemon-transition-smooth);
    position: relative;
    overflow: hidden;
}

.quick-action::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.1), transparent);
    transition: left 0.6s ease;
}

.quick-action:hover::before {
    left: 100%;
}

.quick-action:hover {
    background: var(--lemon-bg-primary);
    border-color: var(--lemon-primary);
    color: var(--lemon-primary);
    transform: translateY(-4px);
    box-shadow: var(--lemon-shadow-lg);
}

.action-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--lemon-radius-lg);
    background: var(--lemon-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--lemon-transition-smooth);
}

.quick-action:hover .action-icon {
    background: var(--lemon-gradient-primary);
    color: white;
    transform: scale(1.1);
}

.action-icon i {
    font-size: var(--lemon-font-size-xl);
}

.quick-action span {
    font-size: var(--lemon-font-size-sm);
    font-weight: 600;
    text-align: center;
}



/* ===== 消息提示样式 ===== */
.auth-message {
    display: flex;
    align-items: center;
    gap: var(--lemon-spacing-md);
    padding: var(--lemon-spacing-lg);
    border-radius: var(--lemon-radius-lg);
    margin-bottom: var(--lemon-spacing-lg);
    font-size: 0.9rem;
    font-weight: 500;
    animation: slideInDown 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.auth-message-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.3);
}

.auth-message-error {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.3);
}

.auth-message-info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

.auth-message i {
    font-size: 1.1rem;
}

/* ===== 响应式设计 ===== */

/* 大屏平板 */
@media (max-width: 1200px) {
    .auth-content-wrapper {
        max-width: 1000px;
        grid-template-columns: 1fr 1fr;
    }

    .auth-brand-panel {
        padding: var(--lemon-spacing-3xl);
    }

    .auth-form-panel {
        padding: var(--lemon-spacing-3xl);
    }
}

/* 平板设备 */
@media (max-width: 1024px) {
    .auth-content-wrapper {
        grid-template-columns: 1fr;
        max-width: 600px;
    }

    .auth-brand-panel {
        padding: var(--lemon-spacing-3xl);
        border-radius: var(--lemon-radius-3xl) var(--lemon-radius-3xl) 0 0;
    }

    .auth-form-panel {
        padding: var(--lemon-spacing-3xl);
        border-radius: 0 0 var(--lemon-radius-3xl) var(--lemon-radius-3xl);
    }

    .auth-form-panel::before {
        display: none;
    }
}

/* 手机横屏 */
@media (max-width: 768px) {
    .auth-container {
        padding: var(--lemon-spacing-md);
    }

    .auth-content-wrapper {
        max-width: 100%;
        min-height: auto;
        border-radius: var(--lemon-radius-2xl);
    }

    .auth-brand-panel,
    .auth-form-panel {
        padding: var(--lemon-spacing-2xl);
    }

    .welcome-title {
        font-size: clamp(1.5rem, 4vw, 2.5rem);
    }

    .welcome-subtitle {
        font-size: var(--lemon-font-size-base);
    }



    .tab-navigation {
        flex-direction: column;
        gap: var(--lemon-spacing-xs);
    }

    .tab-btn {
        padding: var(--lemon-spacing-md);
    }

    .verification-group {
        flex-direction: column;
        gap: var(--lemon-spacing-lg);
    }

    .verification-btn {
        width: 100%;
        min-width: auto;
        height: 50px;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--lemon-spacing-lg);
    }

    .quick-actions {
        flex-direction: column;
    }

    .wechat-steps {
        flex-direction: column;
        gap: var(--lemon-spacing-lg);
    }

    .qr-container {
        width: 200px;
        height: 200px;
    }


}

/* 手机竖屏 */
@media (max-width: 480px) {
    .auth-container {
        padding: var(--lemon-spacing-sm);
    }

    .auth-brand-panel,
    .auth-form-panel {
        padding: var(--lemon-spacing-xl);
    }

    .form-title {
        font-size: var(--lemon-font-size-xl);
        flex-direction: column;
        gap: var(--lemon-spacing-sm);
    }

    .title-icon {
        width: 35px;
        height: 35px;
    }

    .form-input {
        padding: 14px 16px 14px 48px;
        font-size: var(--lemon-font-size-sm);
    }

    .input-icon {
        left: 14px;
        font-size: var(--lemon-font-size-sm);
    }

    .submit-btn {
        padding: 16px 24px;
        font-size: var(--lemon-font-size-sm);
        height: 55px;
    }

    .verification-btn {
        padding: 14px 20px;
        font-size: var(--lemon-font-size-xs);
        height: 48px;
    }

    .qr-container {
        width: 180px;
        height: 180px;
    }

    .step-number {
        width: 35px;
        height: 35px;
        font-size: var(--lemon-font-size-sm);
    }

    .step-content h4 {
        font-size: var(--lemon-font-size-xs);
    }

    .step-content p {
        font-size: 0.7rem;
    }



    .floating-element-1 {
        width: 200px;
        height: 200px;
    }

    .floating-element-2 {
        width: 100px;
        height: 100px;
    }

    .floating-element-3 {
        width: 120px;
        height: 120px;
    }

    .floating-element-4 {
        width: 80px;
        height: 80px;
    }
}

/* 超小屏幕 */
@media (max-width: 320px) {
    .auth-brand-panel,
    .auth-form-panel {
        padding: var(--lemon-spacing-lg);
    }

    .qr-container {
        width: 160px;
        height: 160px;
    }
}

/* ===== 无障碍和现代化增强 ===== */

/* 聚焦样式 */
.form-input:focus,
.submit-btn:focus,
.tab-btn:focus,
.password-toggle:focus,
.verification-btn:focus,
.checkbox-wrapper:focus-within,
.switch-link:focus,
.forgot-link:focus,
.quick-action:focus,
.refresh-btn:focus {
    outline: 3px solid rgba(79, 70, 229, 0.5);
    outline-offset: 2px;
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    :root {
        --lemon-primary: #3730a3;
        --lemon-secondary: #5b21b6;
        --lemon-text-primary: #000000;
        --lemon-text-secondary: #374151;
        --lemon-border-light: #6b7280;
    }
}

/* 减少动画（尊重用户偏好） */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .floating-element {
        animation: none !important;
    }
}

/* 深色模式偏好 */
@media (prefers-color-scheme: dark) {
    .lemon-auth-page {
        background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    }
}

/* 现代化文本选择 */
::selection {
    background: rgba(79, 70, 229, 0.3);
    color: var(--lemon-text-primary);
}

::-moz-selection {
    background: rgba(79, 70, 229, 0.3);
    color: var(--lemon-text-primary);
}

/* 现代化滚动条 */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--lemon-bg-secondary);
    border-radius: var(--lemon-radius-lg);
}

::-webkit-scrollbar-thumb {
    background: var(--lemon-gradient-primary);
    border-radius: var(--lemon-radius-lg);
    border: 2px solid var(--lemon-bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--lemon-gradient-secondary);
}

/* Firefox 滚动条样式 */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--lemon-primary) var(--lemon-bg-secondary);
}

/* 聚焦指示器增强 */
.form-input:focus-visible,
.submit-btn:focus-visible,
.tab-btn:focus-visible {
    outline: 3px solid var(--lemon-primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 6px rgba(79, 70, 229, 0.1);
}

/* 状态指示器 */
.form-input.error {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input.success {
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* 加载状态 */
.loading {
    pointer-events: none;
    opacity: 0.7;
}

.loading * {
    cursor: wait !important;
}

/* 现代化视觉效果 */
.auth-content-wrapper {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.submit-btn:hover {
    box-shadow:
        var(--lemon-shadow-xl),
        0 0 30px rgba(79, 70, 229, 0.4);
}

/* 表单验证动画 */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.form-input.error {
    animation: shake 0.5s ease-in-out;
}

/* 成功动画 */
@keyframes checkmark {
    0% { stroke-dashoffset: 100; }
    100% { stroke-dashoffset: 0; }
}

/* 打印样式 */
@media print {
    .auth-background-decoration,
    .floating-element {
        display: none !important;
    }

    .lemon-auth-page {
        background: white !important;
    }

    .auth-content-wrapper {
        box-shadow: none !important;
        border: 2px solid #000;
    }

    .submit-btn,
    .verification-btn {
        background: #000 !important;
        color: #fff !important;
    }
}

/* ===== 修复和增强样式 ===== */

/* 确保表单在小屏幕上的可用性 */
@media (max-height: 700px) {
    .auth-container {
        align-items: flex-start;
        padding-top: var(--lemon-spacing-lg);
    }

    .auth-content-wrapper {
        min-height: auto;
    }

    .auth-brand-panel {
        padding: var(--lemon-spacing-lg);
    }

    .auth-form-panel {
        padding: var(--lemon-spacing-lg);
    }
}

/* 修复表单验证状态 */
.form-input.is-valid {
    border-color: var(--lemon-success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-input.is-invalid {
    border-color: var(--lemon-danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* 确保图标字体加载 */
.fa, .fas, .fab {
    font-family: "Font Awesome 5 Free", "Font Awesome 5 Brands";
    font-weight: 900;
}

/* 修复潜在的布局问题 */
.auth-content-wrapper * {
    box-sizing: border-box;
}

/* 确保背景渐变在所有浏览器中正常工作 */
.lemon-auth-page {
    background: #4f46e5; /* 后备颜色 */
    background: var(--lemon-gradient-primary);
}

/* 修复可能的溢出问题 */
.form-container {
    max-width: 100%;
    overflow: hidden;
}

/* 确保按钮在所有状态下都可见 */
.submit-btn,
.verification-btn {
    position: relative;
    z-index: 1;
}

/* 修复输入框在某些浏览器中的显示问题 */
.form-input {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

/* 确保在旧版浏览器中的兼容性 */
.auth-content-wrapper {
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
}

@supports not (backdrop-filter: blur(20px)) {
    .auth-content-wrapper {
        background: rgba(255, 255, 255, 0.95);
    }
}