/* ===== 基础变量 ===== */
:root {
    /* DeepSeek色彩系统 */
    --color-primary: #10a37f;
    --color-primary-dark: #0d8c6c;
    --color-primary-light: #e6f7f3;
    --color-surface: #ffffff;
    --color-background: #f9fafb;
    --color-border: #e5e7eb;
    --color-border-light: #f1f5f9;
    --color-text-primary: #1f2937;
    --color-text-secondary: #6b7280;
    --color-text-tertiary: #9ca3af;
    --color-error: #ef4444;
    --color-success: #10a37f;
    --color-warning: #f59e0b;
    --color-wechat: #07c160;
    --color-wechat-light: rgba(7, 193, 96, 0.1);

    /* 间距系统 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* 圆角系统 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 999px;

    /* 动画时长 */
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 350ms;

    /* 阴影系统 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* 动效曲线 */
    --ease-out: cubic-bezier(0.215, 0.61, 0.355, 1);
    --ease-in-out: cubic-bezier(0.645, 0.045, 0.355, 1);
}

/* ===== 基础重置与全局样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
    background-color: var(--color-background);
    color: var(--color-text-primary);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 减少动效支持 */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    :root {
        --color-border: #1f2937;
        --color-border-light: #374151;
        --color-text-secondary: #1f2937;
    }

    .login-form-card {
        border-width: 2px;
    }

    .input-wrapper {
        border-width: 2px;
    }
}

/* ===== 主容器布局 ===== */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 80px);
    padding: var(--space-xl);
    position: relative;
    overflow: hidden;
}

/* 背景装饰元素 */
.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(16, 163, 127, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(16, 163, 127, 0.05) 0%, transparent 50%);
    z-index: -1;
}

.login-wrapper {
    width: 100%;
    max-width: 420px;
    position: relative;
    animation: slideUp var(--duration-slow) var(--ease-out);
}

/* ===== 登录卡片 ===== */
.login-form-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border);
    overflow: hidden;
    position: relative;
    backdrop-filter: blur(10px);
}

/* 卡片装饰边框 */
.login-form-card::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    background: linear-gradient(135deg,
            rgba(16, 163, 127, 0.2) 0%,
            rgba(16, 163, 127, 0.1) 25%,
            transparent 50%,
            rgba(16, 163, 127, 0.1) 75%,
            rgba(16, 163, 127, 0.2) 100%);
    border-radius: calc(var(--radius-xl) + 1px);
    z-index: -1;
    opacity: 0.5;
}

/* ===== 卡片头部 ===== */
.login-header {
    padding: var(--space-xl);
    background: linear-gradient(135deg,
            rgba(16, 163, 127, 0.1) 0%,
            rgba(16, 163, 127, 0.05) 50%,
            transparent 100%);
    border-bottom: 1px solid var(--color-border-light);
    position: relative;
}

/* 头部装饰线条 */
.login-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
            transparent,
            var(--color-primary-light),
            transparent);
}

.brand-section {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.brand-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
    transform: rotate(-45deg);
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(16, 163, 127, 0.2);
    transition: transform var(--duration-normal) var(--ease-out);
}

.brand-icon:hover {
    transform: rotate(0deg);
}

.brand-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.brand-subtitle {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

.accent-number {
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    margin: 0 4px;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}

/* ===== 表单区域 ===== */
.login-form {
    padding: var(--space-xl);
}

.form-fields {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* 表单字段组 */
.form-field {
    position: relative;
}

.field-label-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.field-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
}

.field-hint {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}

.forgot-password {
    font-size: 0.75rem;
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--duration-fast) var(--ease-out);
    position: relative;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
}

.forgot-password:hover {
    color: var(--color-primary-dark);
    background: var(--color-primary-light);
    text-decoration: none;
}

/* 输入容器 */
.input-container {
    position: relative;
}

.input-wrapper {
    position: relative;
    background: var(--color-background);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--duration-normal) var(--ease-out);
    overflow: hidden;
}

.input-wrapper:hover {
    border-color: var(--color-text-tertiary);
}

.input-wrapper:focus-within {
    border-color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(16, 163, 127, 0.15);
    transform: translateY(-1px);
}

.input-wrapper input {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    border: none;
    background: transparent;
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    outline: none;
    transition: all var(--duration-normal) var(--ease-out);
    font-variation-settings: 'wght' 400;
    letter-spacing: 0.01em;
}

.input-wrapper input::placeholder {
    color: var(--color-text-tertiary);
    font-weight: 300;
    opacity: 0.7;
}

.input-decoration {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg,
            transparent,
            var(--color-primary),
            transparent);
    opacity: 0;
    transform: scaleX(0.5);
    transition: all var(--duration-normal) var(--ease-out);
}

.input-wrapper:focus-within .input-decoration {
    opacity: 1;
    transform: scaleX(1);
}

/* 密码切换按钮 */
.password-toggle {
    position: absolute;
    right: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    padding: var(--space-xs);
    opacity: 0.6;
    transition: all var(--duration-fast) var(--ease-out);
    border-radius: var(--radius-sm);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle:hover {
    opacity: 1;
    color: var(--color-primary);
    background: rgba(16, 163, 127, 0.1);
}

.password-toggle:active {
    transform: translateY(-50%) scale(0.95);
}

.toggle-icon {
    font-size: 0.875rem;
    line-height: 1;
    display: inline-block;
    transition: transform var(--duration-fast) var(--ease-out);
}

.password-toggle:hover .toggle-icon {
    transform: scale(1.1);
}

/* 错误信息 */
.error-message {
    font-size: 0.75rem;
    color: var(--color-error);
    margin-top: var(--space-xs);
    min-height: 1rem;
    opacity: 0;
    transform: translateY(-4px);
    transition: all var(--duration-fast) var(--ease-out);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    letter-spacing: 0.01em;
}

.error-message:not(:empty) {
    opacity: 1;
    transform: translateY(0);
}

.error-message::before {
    content: '⚠';
    font-size: 0.625rem;
    flex-shrink: 0;
}

.error-animate {
    animation: shake 0.4s var(--ease-out);
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    20%,
    60% {
        transform: translateX(-4px);
    }

    40%,
    80% {
        transform: translateX(4px);
    }
}

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

.strength-bar {
    height: 4px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-xs);
    position: relative;
}

.strength-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 33.33%;
    width: 1px;
    height: 100%;
    background: var(--color-surface);
    opacity: 0.5;
}

.strength-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 66.66%;
    width: 1px;
    height: 100%;
    background: var(--color-surface);
    opacity: 0.5;
}

.strength-fill {
    height: 100%;
    width: 0%;
    border-radius: var(--radius-full);
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.strength-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.3),
            transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    100% {
        left: 100%;
    }
}

.strength-text {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    transition: color var(--duration-normal) var(--ease-out);
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ===== 表单选项 ===== */
.form-options {
    margin: var(--space-lg) 0 var(--space-xl);
}

.remember-me {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    user-select: none;
    transition: color var(--duration-fast) var(--ease-out);
}

.remember-me:hover {
    color: var(--color-text-primary);
}

.checkbox-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast) var(--ease-out);
    flex-shrink: 0;
    position: relative;
}

.checkbox-input:checked+.checkbox-custom {
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(16, 163, 127, 0.2);
}

.checkbox-input:checked+.checkbox-custom::after {
    content: '';
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) translate(1px, -1px);
}

.checkbox-input:focus+.checkbox-custom {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.checkbox-label {
    font-weight: 400;
    letter-spacing: 0.01em;
}

.agreement {
    margin-top: var(--space-lg);
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    transition: all var(--duration-normal) var(--ease-out);
}

.agreement:hover {
    border-color: var(--color-primary-light);
    background: rgba(16, 163, 127, 0.02);
}

.agreement p {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    line-height: 1.4;
    text-align: center;
    margin: 0;
}

.agreement a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0 2px;
    transition: all var(--duration-fast) var(--ease-out);
}

.agreement a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.agreement a:active {
    transform: translateY(1px);
}

/* ===== 登录提交按钮 ===== */
.login-submit {
    position: relative;
    width: 100%;
    padding: var(--space-md) var(--space-xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
    overflow: hidden;
    letter-spacing: 0.02em;
    outline: none;
}

.login-submit::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 var(--duration-slow) var(--ease-out);
}

.login-submit:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, #0a7a5f 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -8px rgba(16, 163, 127, 0.4);
}

.login-submit:hover:not(:disabled)::before {
    left: 100%;
}

.login-submit:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 4px 12px -4px rgba(16, 163, 127, 0.3);
}

.login-submit:disabled {
    background: var(--color-border);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    opacity: 0.6;
}

.login-submit:disabled .submit-content {
    opacity: 0.7;
}

.submit-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: opacity var(--duration-fast) var(--ease-out);
    position: relative;
    z-index: 1;
}

.submit-icon {
    font-size: 0.875rem;
    transition: transform var(--duration-normal) var(--ease-out);
    display: inline-block;
}

.login-submit:hover:not(:disabled) .submit-icon {
    transform: translateX(4px) scale(1.1);
}

.submit-text {
    font-weight: 500;
}

.submit-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity var(--duration-fast) var(--ease-out);
    z-index: 1;
}

.login-submit.loading .submit-content {
    opacity: 0;
}

.login-submit.loading .submit-loader {
    opacity: 1;
}

.loader-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===== 第三方登录区域 ===== */
.third-party-section {
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border-light);
    position: relative;
}

.third-party-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg,
            transparent,
            var(--color-primary),
            transparent);
}

.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.divider-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg,
            transparent,
            var(--color-border),
            transparent);
}

.divider-text {
    color: var(--color-text-tertiary);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}

/* 微信登录按钮 */
.wechat-login-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    width: 100%;
    padding: var(--space-md);
    background: var(--color-surface);
    color: var(--color-wechat);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
    outline: none;
}

.wechat-login-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(7, 193, 96, 0.1),
            transparent);
    transition: left var(--duration-slow) var(--ease-out);
}

.wechat-login-button:hover {
    background: rgba(7, 193, 96, 0.05);
    border-color: var(--color-wechat);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -8px rgba(7, 193, 96, 0.15);
    color: var(--color-wechat);
}

.wechat-login-button:hover::before {
    left: 100%;
}

.wechat-login-button:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px -4px rgba(7, 193, 96, 0.1);
}

.wechat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    position: relative;
    z-index: 1;
}

.wechat-icon svg {
    filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.1));
}

.wechat-text {
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.wechat-hint {
    text-align: center;
    margin-top: var(--space-sm);
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    opacity: 0.8;
    transition: opacity var(--duration-fast) var(--ease-out);
}

.third-party-section:hover .wechat-hint {
    opacity: 1;
}

/* ===== 注册区域 ===== */
.register-section {
    padding: var(--space-xl);
    border-top: 1px solid var(--color-border-light);
    background: linear-gradient(135deg,
            rgba(16, 163, 127, 0.05) 0%,
            rgba(16, 163, 127, 0.02) 50%,
            transparent 100%);
    position: relative;
}

.register-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
            transparent,
            var(--color-primary-light),
            transparent);
    opacity: 0.5;
}

.register-text {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

.register-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    margin-left: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.register-link::after {
    content: '→';
    font-size: 0.875rem;
    opacity: 0;
    transform: translateX(-4px);
    transition: all var(--duration-normal) var(--ease-out);
}

.register-link:hover {
    color: var(--color-primary-dark);
    background: rgba(16, 163, 127, 0.1);
    transform: translateX(2px);
}

.register-link:hover::after {
    opacity: 1;
    transform: translateX(0);
}

/* ===== 登录成功状态 ===== */
.login-success {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--color-border);
    padding: var(--space-2xl);
    text-align: center;
    animation: scaleIn var(--duration-slow) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.login-success::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg,
            var(--color-success),
            var(--color-primary));
}

.success-content {
    max-width: 320px;
    margin: 0 auto;
    position: relative;
}

.success-icon {
    margin-bottom: var(--space-xl);
}

.icon-circle {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-success) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 auto;
    animation: checkmark var(--duration-slow) var(--ease-out);
    box-shadow: 0 8px 24px rgba(16, 163, 127, 0.3);
}

@keyframes checkmark {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }

    50% {
        transform: scale(1.1) rotate(0);
    }

    70% {
        transform: scale(0.95) rotate(0);
    }

    100% {
        transform: scale(1) rotate(0);
        opacity: 1;
    }
}

.success-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

.success-message {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    font-size: 0.9375rem;
}

.redirect-indicator {
    margin: var(--space-xl) 0;
}

.progress-container {
    height: 4px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-md);
    position: relative;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg,
            var(--color-success),
            var(--color-primary));
    border-radius: var(--radius-full);
    animation: fillProgress 3s linear forwards;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.4),
            transparent);
    animation: progressShimmer 1.5s infinite;
}

@keyframes fillProgress {
    to {
        width: 100%;
    }
}

@keyframes progressShimmer {
    100% {
        left: 100%;
    }
}

.redirect-countdown {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}

.countdown-number {
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    font-weight: 600;
    color: var(--color-success);
    min-width: 20px;
    font-size: 1rem;
}

.manual-redirect {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--duration-normal) var(--ease-out);
    margin-top: var(--space-lg);
}

.manual-redirect::after {
    content: '→';
    font-size: 0.875rem;
    opacity: 0;
    transform: translateX(-4px);
    transition: all var(--duration-normal) var(--ease-out);
}

.manual-redirect:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, #0a7a5f 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -8px rgba(16, 163, 127, 0.4);
}

.manual-redirect:hover::after {
    opacity: 1;
    transform: translateX(0);
}

.manual-redirect:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px -4px rgba(16, 163, 127, 0.3);
}

/* ===== 动画定义 ===== */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.98);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .login-container {
        padding: var(--space-lg);
    }

    .login-wrapper {
        max-width: 100%;
    }

    .login-form-card {
        border-radius: var(--radius-lg);
    }

    .login-header {
        padding: var(--space-lg);
    }

    .login-form {
        padding: var(--space-lg);
    }

    .brand-section {
        flex-direction: column;
        text-align: center;
        gap: var(--space-sm);
    }

    .brand-icon {
        margin-bottom: var(--space-sm);
    }

    .brand-title {
        font-size: 1.5rem;
    }

    .register-section {
        padding: var(--space-lg);
    }

    .login-success {
        padding: var(--space-xl);
        margin: 0 var(--space-md);
    }

    .success-title {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: var(--space-md);
    }

    .login-header,
    .login-form {
        padding: var(--space-md);
    }

    .brand-title {
        font-size: 1.25rem;
    }

    .brand-subtitle {
        font-size: 0.875rem;
    }

    .input-wrapper input {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.875rem;
    }

    .login-submit {
        padding: var(--space-sm) var(--space-lg);
        font-size: 0.875rem;
    }

    .wechat-login-button {
        padding: var(--space-sm);
        font-size: 0.875rem;
    }

    .form-fields {
        gap: var(--space-md);
    }

    .form-options {
        margin: var(--space-md) 0;
    }

    .login-success {
        padding: var(--space-lg);
    }

    .icon-circle {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
}

@media (max-width: 360px) {
    .login-container {
        padding: var(--space-sm);
    }

    .login-form-card {
        border-radius: var(--radius-md);
    }

    .brand-title {
        font-size: 1.125rem;
    }

    .field-label-group {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    .forgot-password {
        align-self: flex-end;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --color-surface: #1f2937;
        --color-background: #111827;
        --color-border: #374151;
        --color-border-light: #374151;
        --color-text-primary: #f9fafb;
        --color-text-secondary: #d1d5db;
        --color-text-tertiary: #9ca3af;
        --color-primary-light: rgba(16, 163, 127, 0.2);
    }

    .login-form-card {
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    }

    .input-wrapper {
        background: rgba(31, 41, 55, 0.5);
    }

    .input-wrapper:focus-within {
        background: var(--color-surface);
    }

    .agreement {
        background: rgba(31, 41, 55, 0.5);
    }

    .register-section {
        background: linear-gradient(135deg,
                rgba(16, 163, 127, 0.1) 0%,
                transparent 100%);
    }

    .wechat-login-button:hover {
        background: rgba(7, 193, 96, 0.1);
    }

    .login-container::before {
        background:
            radial-gradient(circle at 20% 30%, rgba(16, 163, 127, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 80% 70%, rgba(16, 163, 127, 0.05) 0%, transparent 50%);
    }
}

/* 打印样式 */
@media print {
    .login-container {
        background: white !important;
    }

    .login-form-card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }

    .login-submit,
    .wechat-login-button {
        display: none !important;
    }
}