/* ==================== CSS变量 CSS Variables ==================== */
:root {
    /* 颜色 Colors */
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-surface-hover: #f4f4f5;
    --color-surface-elevated: #ffffff;
    --color-text: #18181b;
    --color-text-secondary: #71717a;
    --color-text-muted: #a1a1aa;
    --color-border: #e4e4e7;
    --color-border-light: #f4f4f5;
    
    /* 主题色 Theme Colors */
    --color-primary: #18181b;
    --color-primary-text: #ffffff;
    --color-secondary: #f4f4f5;
    --color-secondary-text: #18181b;
    
    /* 功能色 Functional Colors */
    --color-success: #22c55e;
    --color-success-bg: rgba(34, 197, 94, 0.1);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.1);
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.1);
    --color-info: #3b82f6;
    --color-info-bg: rgba(59, 130, 246, 0.1);
    
    /* 尺寸 Dimensions */
    --header-height: 60px;
    --nav-height: 70px;
    --sidebar-width: 260px;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    
    /* 间距 Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    
    /* 阴影 Shadows */
    --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);
    
    /* 安全区域 Safe Area */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    
    /* 过渡 Transition */
    --transition: all 0.2s ease;
}

/* ==================== 基础样式 Base Styles ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

@media (max-width: 380px) {
    html {
        font-size: 14px;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    min-height: 100dvh;
    padding-bottom: calc(var(--nav-height) + var(--safe-bottom));
}

@media (min-width: 1024px) {
    body {
        padding-bottom: 0;
    }
}

a {
    color: var(--color-text);
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ==================== 布局 Layout ==================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.content {
    padding-top: calc(var(--header-height) + var(--space-md));
    padding-bottom: var(--space-lg);
}

@media (min-width: 1024px) {
    .content {
        padding-top: calc(var(--header-height) + var(--space-lg));
    }
}

/* ==================== 头部 Header ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(var(--color-surface), 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-md);
    z-index: 1000;
}

.header-logo a {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.header-nav {
    display: none;
}

@media (min-width: 768px) {
    .header-nav {
        display: flex;
        gap: var(--space-lg);
    }
    
    .header-nav .nav-link {
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--color-text-secondary);
        padding: var(--space-sm) 0;
        position: relative;
        transition: var(--transition);
        display: inline-flex;
        align-items: center;
        gap: var(--space-xs);
    }
    
    .header-nav .nav-link:hover,
    .header-nav .nav-link.active {
        color: var(--color-text);
    }
    
    .header-nav .nav-link.active::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 2px;
        background: var(--color-primary);
        border-radius: 2px;
    }
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* ==================== 按钮 Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    min-height: 40px;
    transition: var(--transition);
    touch-action: manipulation;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-primary-text);
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    background: var(--color-secondary);
    color: var(--color-secondary-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-surface-hover);
}

.btn-success {
    background: var(--color-success);
    color: white;
}

.btn-warning {
    background: var(--color-warning);
    color: white;
}

.btn-danger {
    background: var(--color-danger);
    color: white;
}

.btn-info {
    background: var(--color-info);
    color: white;
}

.btn-ghost {
    background: transparent;
    color: var(--color-text);
}

.btn-ghost:hover {
    background: var(--color-surface-hover);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    min-height: 32px;
}

.btn-lg {
    padding: 14px 24px;
    font-size: 1rem;
    min-height: 48px;
}

.btn-full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==================== 图标按钮 Icon Button ==================== */
.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
}

.icon-btn:hover {
    background: var(--color-surface-hover);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

/* ==================== SVG图标 SVG Icons ==================== */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
}

.icon svg {
    width: 1em;
    height: 1em;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* 导航链接中的图标 */
.header-nav .nav-link svg {
    width: 16px;
    height: 16px;
}

/* 下拉菜单中的图标 */
.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.dropdown-menu a svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* 按钮中的图标 */
.btn svg {
    width: 1em;
    height: 1em;
    flex-shrink: 0;
}

/* ==================== 表单 Forms ==================== */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.form-control {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 16px;
    min-height: 44px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-text);
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3E%3C/svg%3E");
    background-position: right 10px center;
    background-repeat: no-repeat;
    background-size: 20px;
    padding-right: 40px;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.form-error {
    font-size: 0.75rem;
    color: var(--color-danger);
    margin-top: var(--space-xs);
}

/* ==================== 卡片 Cards ==================== */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.card-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--color-surface-hover);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.card-body {
    padding: var(--space-md);
}

.card-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--color-border);
    background: var(--color-surface-hover);
}

/* ==================== 统计卡片 Stat Cards ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

@media (min-width: 640px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-md);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

/* ==================== 徽章 Badges ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.badge-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.badge-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.badge-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.badge-info {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.badge-secondary {
    background: var(--color-surface-hover);
    color: var(--color-text-secondary);
}

/* ==================== 提示框 Alerts ==================== */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
    border: 1px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.alert::before {
    content: '';
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.alert-success {
    background: var(--color-success-bg);
    color: var(--color-success);
    border-color: var(--color-success);
}

.alert-success::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2322c55e' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
}

.alert-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
    border-color: var(--color-warning);
}

.alert-warning::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23f59e0b' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z'/%3E%3C/svg%3E");
}

.alert-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    border-color: var(--color-danger);
}

.alert-danger::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23ef4444' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M6 18L18 6M6 6l12 12'/%3E%3C/svg%3E");
}

.alert-info {
    background: var(--color-info-bg);
    color: var(--color-info);
    border-color: var(--color-info);
}

.alert-info::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%233b82f6' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z'/%3E%3C/svg%3E");
}

/* ==================== 表格 Tables ==================== */
.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

th {
    text-align: left;
    padding: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
    font-size: 0.75rem;
    text-transform: uppercase;
    white-space: nowrap;
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    vertical-align: middle;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: var(--color-surface-hover);
}

/* ==================== 列表 Lists ==================== */
.list-item {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
}

.list-item:last-child {
    border-bottom: none;
}

.list-content {
    flex: 1;
    min-width: 0;
}

.list-title {
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    word-break: break-word;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.list-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ==================== 标签页 Tabs ==================== */
.tabs {
    display: flex;
    gap: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.tab:hover {
    color: var(--color-text);
}

.tab.active {
    color: var(--color-text);
    border-bottom-color: var(--color-primary);
}

/* ==================== 用户菜单 User Menu ==================== */
.user-menu {
    position: relative;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    cursor: pointer;
    font-size: 0.875rem;
}

.user-btn .credits {
    color: var(--color-success);
    font-weight: 600;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    display: none;
    z-index: 1001;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px 16px;
    font-size: 0.875rem;
    color: var(--color-text);
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: var(--color-surface-hover);
}

.dropdown-menu hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-sm) 0;
}

.dropdown-menu .text-danger {
    color: var(--color-danger);
}

/* ==================== 底部导航 Bottom Nav ==================== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--nav-height) + var(--safe-bottom));
    padding-bottom: var(--safe-bottom);
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    padding-top: var(--space-sm);
}

@media (min-width: 1024px) {
    .bottom-nav {
        display: none;
    }
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: var(--space-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.7rem;
    transition: var(--transition);
}

.nav-item.active {
    color: var(--color-text);
}

.nav-icon {
    font-size: 1.25rem;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-icon svg {
    width: 24px;
    height: 24px;
    stroke-width: 2;
}

/* ==================== 验证码 CAPTCHA ==================== */
.captcha-wrap {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.captcha-img {
    height: 44px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid var(--color-border);
}

.captcha-refresh {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ==================== 进度条 Progress Bar ==================== */
.progress-bar {
    height: 8px;
    background: var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    margin-top: var(--space-sm);
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* ==================== 空状态 Empty State ==================== */
.empty-state {
    text-align: center;
    padding: var(--space-xl);
    color: var(--color-text-muted);
}

.empty-state-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-md);
    color: var(--color-text-muted);
    opacity: 0.5;
}

.empty-state-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.empty-state-text {
    font-size: 0.9rem;
}

/* ==================== 模态框 Modal ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--space-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-surface);
    border-radius: var(--radius);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.2s ease;
}

.modal-overlay.show .modal {
    transform: scale(1);
}

.modal-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: none;
    background: var(--color-surface-hover);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--color-border);
    color: var(--color-text);
}

.modal-close svg {
    width: 18px;
    height: 18px;
}

.modal-body {
    padding: var(--space-md);
}

.modal-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

/* ==================== 网格布局 Grid ==================== */
.grid {
    display: grid;
    gap: var(--space-md);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ==================== 工具类 Utilities ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }
.text-info { color: var(--color-info); }
.text-muted { color: var(--color-text-muted); }

.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }

.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }

.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-sm); }
.gap-3 { gap: var(--space-md); }

.hidden { display: none; }

/* ==================== 动画 Animations ==================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

.animate-fade-in {
    animation: fadeIn 0.3s ease;
}

.animate-slide-up {
    animation: slideUp 0.3s ease;
}

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

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

/* ==================== 打印 Print ==================== */
@media print {
    .header,
    .bottom-nav,
    .icon-btn {
        display: none !important;
    }
    
    body {
        padding: 0;
    }
}

/* ==================== 响应式适配 Responsive ==================== */
@media (max-width: 640px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .filter-bar {
        flex-direction: column;
    }
    
    .search-box {
        width: 100%;
    }
}

/* ==================== 暗色主题 Dark Theme ==================== */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #09090b;
        --color-surface: #18181b;
        --color-surface-hover: #27272a;
        --color-surface-elevated: #27272a;
        --color-text: #fafafa;
        --color-text-secondary: #a1a1aa;
        --color-text-muted: #71717a;
        --color-border: #27272a;
        --color-border-light: #3f3f46;
        
        --color-primary: #fafafa;
        --color-primary-text: #18181b;
        --color-secondary: #27272a;
        --color-secondary-text: #fafafa;
        
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    }
}