/* 使用CSS变量，方便主题管理 - 极致简洁风格 */
:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --secondary-color: #6b7280;
    --danger-color: #ef4444;
    --success-color: #10b981;
    --background-color: #ffffff;
    --card-background: #ffffff;
    --header-background: #ffffff;
    --footer-background: #ffffff;
    --border-radius: 6px;
    --border-radius-sm: 4px;
    --border-radius-lg: 8px;
    --box-shadow: none;
    --box-shadow-hover: 0 2px 6px rgba(0, 0, 0, 0.08);
    --transition: all 0.2s ease;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-color: #e5e7eb;
    --hover-bg: #f9fafb;
    --success-bg: #f0fdf4;
    --success-text: #166534;
    --spacing-xl: 24px;
    --spacing-lg: 16px;
    --spacing-md: 12px;
    --spacing-sm: 8px;
    --spacing-xs: 4px;
}

/* 重置样式，使用H5最佳实践 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth; /* H5平滑滚动 */
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background-color);
    min-height: 100vh;
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6;
}

/* 页面容器 */
.container {
    max-width: 2400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles - 极致简洁风格 */
.main-header {
    background: var(--header-background);
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    max-width: 2400px;
    margin: 0 auto;
    padding: 0 16px;
}

.site-title {
    font-size: 1.8rem;
    color: var(--text-primary);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: 0;
    letter-spacing: -0.3px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.site-logo {
    width: 32px;
    height: 32px;
    transition: transform 0.2s ease;
    object-fit: contain;
}

.site-title:hover .site-logo {
    transform: rotate(5deg);
}

/* 导航菜单 - 极致简洁风格 */
.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    padding: 0;
    margin: 0;
    flex-shrink: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    border-radius: var(--border-radius);
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--hover-bg);
}

.nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
    background: var(--hover-bg);
}

.nav-link i {
    font-size: 1rem;
    color: var(--primary-color);
}

.dropdown-icon {
    font-size: 0.8rem;
    margin-left: 4px;
    transition: transform 0.2s ease;
}

/* 下拉菜单样式 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-hover);
    list-style: none;
    padding: 8px 0;
    margin: 4px 0 0 0;
    min-width: 160px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
}

.nav-item.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-item.dropdown:hover .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-item {
    padding: 0;
}

.dropdown-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s ease;
    width: 100%;
    background: transparent;
    border: none;
    cursor: pointer;
}

.dropdown-link:hover {
    background: var(--hover-bg);
    color: var(--primary-color);
}

/* 搜索容器样式 - 极致简洁风格 */
.search-container {
    display: flex;
    flex: 1;
    max-width: 600px;
    min-width: 300px;
}

.search-box {
    display: flex;
    width: 100%;
    background: var(--hover-bg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.search-box:focus-within {
    border-color: var(--primary-color);
    background: white;
}

.search-box input {
    flex: 1;
    padding: 12px 16px;
    border: none;
    outline: none;
    font-size: 14px;
    background: transparent;
    color: var(--text-primary);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-box button {
    padding: 12px 20px;
    border: none;
    background: var(--primary-color);
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-box button:hover {
    background: var(--primary-hover);
}

/* Main Content */
.main-content {
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

/* Page Container */
.page-container {
    max-width: 2400px;
    margin: 0 auto;
    padding: 16px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--background-color);
}

.content-wrapper {
    display: flex;
    flex: 1;
}



/* Content Area */
.content-area,
.websites-section {
    flex: 1;
    background: var(--card-background);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid transparent;
    margin-bottom: var(--spacing-lg);
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.section-title {
    font-size: 1.8rem;
    color: var(--text-primary);
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    letter-spacing: -0.3px;
}

.section-title i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

/* Controls - 极简风格 */
.controls {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

/* 按钮样式 - 极致简洁风格 */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    background: transparent;
    min-width: auto;
    justify-content: center;
}

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

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

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

.btn-secondary:hover {
    background: #4b5563;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
    padding: 6px 12px;
    font-size: 12px;
}

.btn-danger:hover {
    background: #dc2626;
}

/* 小按钮样式 - 极致简洁风格 */
.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    gap: 6px;
    min-width: auto;
}

.btn-sm i {
    font-size: 12px;
}

/* Select样式 - 极致简洁风格 */
select {
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 13px;
    font-weight: 500;
    background: var(--hover-bg);
    cursor: pointer;
    transition: var(--transition);
    outline: none;
    color: var(--text-primary);
    min-width: 140px;
}

select:focus {
    border-color: var(--primary-color);
    background: white;
}

/* Websites Grid */
.websites-grid {
    display: block;
    gap: var(--spacing-xl);
}

/* Category Section Styles - 极致简洁风格 */
.category-section {
    margin-bottom: var(--spacing-lg);
    background: transparent;
    padding: 0;
    transition: var(--transition);
}

.category-section-header {
    margin: 0 0 var(--spacing-md) 0;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    background: transparent;
}

.category-section-title {
    font-size: 1.2rem;
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    letter-spacing: -0.2px;
}

.category-section-title i {
    color: var(--primary-color);
    font-size: 1rem;
}

.category-section-count {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-left: auto;
}

/* 修改为自动换行布局 - 极致简洁风格 */
.category-websites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    justify-content: flex-start;
    padding: 8px 0;
}

/* 自动换行的卡片样式 - 极致简洁风格 */
.category-websites-grid .website-card {
    flex: none;
    width: 100%;
    max-width: none;
}

/* Website Card - 极致简洁风格 */
.website-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: all 0.2s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-height: 140px;
    justify-content: center;
    box-shadow: var(--box-shadow);
    position: relative;
}

.website-card:hover {
    border-color: var(--primary-color);
    background: white;
    box-shadow: var(--box-shadow-hover);
    transform: translateY(-2px);
}

.website-card .website-icon {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 50%;
}

.website-card:hover .website-icon {
    transform: scale(1.05);
}

.website-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 100%;
    line-height: 1.3;
}

.website-card .website-url {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    text-decoration: none;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color 0.2s ease;
    margin-top: auto;
    width: 100%;
    font-weight: 500;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    animation: fadeIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 550px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 75px rgba(0, 0, 0, 0.4);
    animation: slideIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 35px 25px;
    border-bottom: 2px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-header h2 i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 2.2rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    line-height: 1;
}

.close-btn:hover {
    color: var(--text-primary);
    background: var(--hover-bg);
    transform: rotate(90deg);
}

/* Form Styles */
form {
    padding: 35px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 15px;
    transition: var(--transition);
    outline: none;
    background: white;
    color: var(--text-primary);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    transform: translateY(-2px);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    padding: 25px 35px 30px;
    border-top: 2px solid var(--border-color);
    background: var(--hover-bg);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

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

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

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 30px;
    color: var(--text-secondary);
    background: var(--hover-bg);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    margin: 20px 0;
}

.empty-state i {
    font-size: 5rem;
    margin-bottom: 25px;
    opacity: 0.3;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.empty-state h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    line-height: 1.6;
}

/* Footer Styles */
.main-footer {
    background: var(--footer-background);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 500;
    letter-spacing: -0.2px;
}

.footer-links {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 22px;
    transition: var(--transition);
    padding: var(--spacing-xs);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    text-decoration: none;
    background: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 2px solid transparent;
}

.footer-links a:hover {
    color: var(--primary-color);
    background: var(--hover-bg);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.25);
    border-color: var(--primary-color);
}

/* Success Message */
.success-message {
    background: var(--success-bg);
    color: var(--success-text);
    padding: 18px 24px;
    border-radius: var(--border-radius);
    margin-bottom: 25px;
    border: 2px solid #a7f3d0;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideDown 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.15);
}

.success-message i {
    font-size: 1.5rem;
    color: var(--success-color);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-25px);
        box-shadow: 0 0 0 rgba(16, 185, 129, 0.15);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        box-shadow: 0 6px 20px rgba(16, 185, 129, 0.15);
    }
}

/* Settings Button and Menu */
.settings-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
}

.settings-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    font-size: 20px;
    cursor: pointer;
    box-shadow: var(--box-shadow-hover);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.settings-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.settings-menu {
    position: absolute;
    bottom: 70px;
    right: 0;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-hover);
    padding: var(--spacing-lg);
    width: 240px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.settings-menu::before {
    content: '';
    position: absolute;
    bottom: -6px;
    right: 20px;
    width: 12px;
    height: 12px;
    background: white;
    transform: rotate(45deg);
    border: 1px solid var(--border-color);
    border-top: none;
    border-left: none;
}

.settings-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.settings-menu h4 {
    margin: 0 0 var(--spacing-md) 0;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.settings-menu h4 i {
    color: var(--primary-color);
    font-size: 1rem;
}

.settings-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

/* Menu Button Styles */
.menu-button {
    width: 100%;
    padding: var(--spacing-md);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
    text-align: left;
}

.menu-button:hover {
    background: var(--hover-bg);
    color: var(--primary-color);
}

.menu-button i {
    font-size: 1rem;
    color: var(--primary-color);
}

.settings-menu-item {
    width: 100%;
    padding: var(--spacing-sm);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
    text-align: left;
}

.settings-menu-item:hover {
    background: var(--hover-bg);
    color: var(--primary-color);
}

.settings-menu-item i {
    font-size: 1rem;
    color: var(--primary-color);
}

/* Modal Body */
.modal-body {
    padding: 35px;
}

/* Add Category Section */
.add-category-section {
    margin-bottom: 30px;
    padding-bottom: 25px;
    border-bottom: 2px solid var(--border-color);
}

.add-category-section h4 {
    margin: 0 0 20px 0;
    color: var(--text-primary);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.add-category-section h4 i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.add-category-form-modal {
    display: flex;
    gap: 15px;
    align-items: center;
}

#modalNewCategoryInput {
    flex: 1;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 15px;
    transition: var(--transition);
    background: white;
    color: var(--text-primary);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

#modalNewCategoryInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    transform: translateY(-2px);
}

/* Categories List Modal */
#categoriesListModal {
    max-height: 380px;
    overflow-y: auto;
    padding-right: 5px;
}

/* 滚动条样式 */
#categoriesListModal::-webkit-scrollbar,
#websitesListModal::-webkit-scrollbar {
    width: 8px;
}

#categoriesListModal::-webkit-scrollbar-track,
#websitesListModal::-webkit-scrollbar-track {
    background: var(--hover-bg);
    border-radius: 10px;
}

#categoriesListModal::-webkit-scrollbar-thumb,
#websitesListModal::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
    transition: var(--transition);
}

#categoriesListModal::-webkit-scrollbar-thumb:hover,
#websitesListModal::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.category-modal-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.category-modal-item:hover {
    background: var(--hover-bg);
    border-color: var(--primary-color);
}

.category-modal-info {
    flex: 1;
}

.category-modal-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 14px;
}

.category-modal-count {
    font-size: 12px;
    color: var(--text-secondary);
    margin-left: var(--spacing-xs);
    font-weight: 500;
    display: inline-block;
}

.category-modal-actions {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    justify-content: flex-end;
}

/* Modal Actions Top */
.modal-actions-top {
    margin-bottom: 25px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

/* Websites List Modal */
#websitesListModal {
    max-height: 450px;
    overflow-y: auto;
    padding-right: 5px;
}

.website-modal-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.website-modal-item:hover {
    background: var(--hover-bg);
    border-color: var(--primary-color);
}

.website-modal-info {
    flex: 1;
    min-width: 0;
}

.website-modal-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.website-modal-url {
    font-size: 12px;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    text-decoration: none;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
}

.website-modal-url:hover {
    text-decoration: underline;
    color: var(--primary-hover);
}

.website-modal-category {
    font-size: 11px;
    color: var(--primary-color);
    background: rgba(59, 130, 246, 0.1);
    padding: 3px 10px;
    border-radius: 12px;
    display: inline-block;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.website-modal-actions {
    display: flex;
    gap: var(--spacing-xs);
}

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 30px;
    color: var(--text-secondary);
    background: var(--hover-bg);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    margin: 20px 0;
}

.empty-state i {
    font-size: 5rem;
    margin-bottom: 25px;
    opacity: 0.3;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.empty-state h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    line-height: 1.6;
}

/* Loading State */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px 20px;
    color: var(--primary-color);
    background: var(--hover-bg);
    border-radius: var(--border-radius-lg);
    margin: 20px 0;
}

.loading i {
    font-size: 3rem;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Responsive Design */
/* 超大型屏幕 */
@media (min-width: 1400px) {
    .container {
        max-width: 1300px;
    }
    
    .websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: 30px;
    }
}

/* 大型屏幕 */
@media (max-width: 1200px) {
    .container {
        max-width: 1100px;
    }
    
    .sidebar {
        width: 240px;
        padding: 20px;
    }
    
    .content-area {
        padding: 30px;
    }
    
    .websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 20px;
    }
}

/* 中型屏幕 */
@media (max-width: 1024px) {
    .container {
        max-width: 950px;
    }
    
    .sidebar {
        width: 220px;
        padding: 20px;
    }
    
    .content-area {
        padding: 25px;
    }
    
    /* 平板设备显示3列 */
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 20px;
    }
    
    .site-title {
        font-size: 2.5rem;
    }
}

/* 平板设备 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
        max-width: 100%;
    }

    .header-top {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .nav-menu {
        justify-content: center;
        gap: var(--spacing-md);
    }
    
    .nav-link {
        padding: 10px 16px;
        font-size: 15px;
    }

    .site-title {
        font-size: 2.2rem;
    }
    
    .site-title i {
        font-size: 2rem;
    }
    
    .nav-menu {
        gap: var(--spacing-sm);
        flex-wrap: wrap;
    }
    
    .nav-link {
        padding: 8px 12px;
        font-size: 14px;
        gap: 4px;
    }
    
    .nav-link span {
        font-size: 12px;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    .search-box input {
        padding: 14px 20px;
        font-size: 15px;
    }
    
    .search-box button {
        padding: 14px 22px;
        font-size: 15px;
    }

    .search-container {
        max-width: 100%;
    }

    .main-content {
        flex-direction: column;
        gap: 20px;
    }

    .sidebar {
        width: 100%;
        position: static;
        max-height: none;
        padding: 25px;
    }
    
    .sidebar-header {
        margin-bottom: 20px;
    }
    
    .categories-nav ul {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .category-item {
        margin-bottom: 0;
        flex: 1 1 calc(50% - 5px);
        min-width: 130px;
    }
    
    .category-link {
        justify-content: center;
        text-align: center;
        padding: 12px 10px;
        font-size: 13px;
    }
    
    .category-link i {
        display: none;
    }
    
    .content-area {
        padding: 25px;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }
    
    select {
        min-width: auto;
    }

    /* 平板设备显示2列 */
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 20px;
    }
    
    .website-card {
        padding: 20px;
    }
    
    .website-card h3 {
        font-size: 1.1rem;
    }
    
    .website-card .website-icon {
        font-size: 2.2rem;
        width: 55px;
        height: 55px;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px;
        max-height: 95vh;
    }
    
    .modal-header,
    form,
    .modal-body,
    .modal-footer {
        padding: 25px;
    }
    
    .settings-container {
        bottom: 30px;
        right: 30px;
    }
    
    .settings-btn {
        width: 65px;
        height: 65px;
        font-size: 26px;
    }
    
    .settings-menu {
        width: 260px;
        bottom: 80px;
    }
    
    /* 分类标题在平板设备上的优化 */
    .category-section-title {
        font-size: 1.3rem;
    }
    
    .category-section-count {
        font-size: 0.8rem;
        padding: 5px 14px;
    }
}

/* 小屏平板/大屏手机 */
@media (max-width: 640px) {
    .container {
        padding: 12px;
    }
    
    header {
        padding: 20px 25px;
        margin-bottom: 18px;
    }
    
    .site-title {
        font-size: 2rem;
        gap: 15px;
    }
    
    .search-box input {
        padding: 15px 20px;
        font-size: 15px;
    }
    
    .search-box button {
        padding: 15px 25px;
    }
    
    .sidebar {
        padding: 20px;
    }
    
    .sidebar-header h3 {
        font-size: 1.2rem;
    }
    
    .category-item {
        flex: 1 1 calc(50% - 5px);
        min-width: 120px;
    }
    
    .category-link {
        padding: 10px 8px;
        font-size: 12px;
    }
    
    .content-area {
        padding: 20px;
    }
    
    .controls {
        margin-bottom: 25px;
        padding-bottom: 20px;
    }
    
    /* 小屏平板显示2列 */
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 18px;
    }
    
    .website-card {
        padding: 18px;
    }
    
    .website-card h3 {
        font-size: 1rem;
    }
    
    .website-card .website-icon {
        font-size: 2rem;
        width: 50px;
        height: 50px;
    }
    
    .modal-header h2 {
        font-size: 1.5rem;
    }
    
    .modal-header,
    form,
    .modal-body,
    .modal-footer {
        padding: 20px;
    }
    
    .settings-container {
        bottom: 25px;
        right: 25px;
    }
    
    .settings-btn {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .settings-menu {
        width: 250px;
        bottom: 75px;
    }
}

/* 手机屏幕 */
@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    header {
        padding: 18px 20px;
        margin-bottom: 15px;
        border-radius: var(--border-radius);
    }
    
    .site-title {
        font-size: 1.8rem;
        gap: 12px;
    }
    
    .site-title i {
        font-size: 1.5rem;
    }
    
    .search-box {
        border-radius: var(--border-radius);
    }
    
    .search-box input {
        padding: 14px 18px;
        font-size: 14px;
    }
    
    .search-box button {
        padding: 14px 22px;
        font-size: 14px;
    }
    
    .main-content {
        gap: 15px;
    }
    
    .sidebar {
        padding: 18px;
        border-radius: var(--border-radius);
    }
    
    .sidebar-header {
        margin-bottom: 15px;
        padding-bottom: 15px;
    }
    
    .sidebar-header h3 {
        font-size: 1.1rem;
    }
    
    .categories-nav ul {
        gap: 8px;
    }
    
    .category-item {
        flex: 1 1 calc(50% - 4px);
        min-width: 110px;
    }
    
    .category-link {
        padding: 9px 6px;
        font-size: 11px;
        border-radius: var(--border-radius-sm);
    }
    
    .category-count {
        padding: 3px 8px;
        font-size: 0.75rem;
        min-width: 24px;
    }
    
    .content-area {
        padding: 18px;
        border-radius: var(--border-radius);
    }
    
    .controls {
        margin-bottom: 20px;
        padding-bottom: 18px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 14px;
        border-radius: var(--border-radius);
    }
    
    select {
        padding: 12px 20px;
        font-size: 14px;
        border-radius: var(--border-radius);
    }
    
    /* 手机屏幕显示2列 */
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 15px;
    }
    
    .website-card {
        padding: 16px;
        border-radius: 10px;
        min-height: 140px;
    }
    
    .website-card h3 {
        font-size: 0.95rem;
        margin-bottom: 6px;
    }
    
    .website-card .website-icon {
        font-size: 1.8rem;
        margin-bottom: 10px;
        width: 45px;
        height: 45px;
    }
    
    .website-card .website-url {
        font-size: 0.7rem;
    }
    
    .modal-content {
        width: 98%;
        margin: 10px;
        border-radius: var(--border-radius);
    }
    
    .modal-header h2 {
        font-size: 1.4rem;
    }
    
    .modal-header,
    form,
    .modal-body,
    .modal-footer {
        padding: 18px;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    .form-group input,
    .form-group select {
        padding: 14px 18px;
        font-size: 14px;
    }
    
    .modal-footer {
        flex-direction: column;
        gap: 12px;
    }
    
    .modal-footer .btn {
        width: 100%;
        justify-content: center;
    }
    
    .footer {
        padding: 20px 25px;
        margin-top: 20px;
        border-radius: var(--border-radius);
    }
    
    .footer-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .footer p {
        font-size: 13px;
    }
    
    .footer-links {
        gap: 15px;
    }
    
    .footer-links a {
        width: 40px;
        height: 40px;
        font-size: 18px;
        padding: 10px;
    }
    
    .settings-container {
        bottom: 20px;
        right: 20px;
    }
    
    .settings-btn {
        width: 55px;
        height: 55px;
        font-size: 22px;
    }
    
    .settings-menu {
        width: 240px;
        bottom: 70px;
        padding: 18px;
    }
    
    .settings-menu h4 {
        font-size: 16px;
        margin-bottom: 15px;
        padding-bottom: 12px;
    }
    
    .settings-menu-item {
        padding: 12px 18px;
        font-size: 14px;
    }
    
    .empty-state {
        padding: 60px 20px;
        margin: 15px 0;
    }
    
    .empty-state i {
        font-size: 4rem;
        margin-bottom: 20px;
    }
    
    .empty-state h3 {
        font-size: 1.5rem;
        margin-bottom: 12px;
    }
    
    .empty-state p {
        font-size: 1rem;
        margin-bottom: 25px;
    }
    
    /* 分类标题在手机上的优化 */
    .category-section-title {
        font-size: 1.2rem;
        gap: 10px;
    }
    
    .category-section-title i {
        font-size: 1rem;
        padding: 10px;
    }
    
    .category-section-count {
        font-size: 0.75rem;
        padding: 4px 12px;
    }
}

/* 超小屏手机 */
@media (max-width: 360px) {
    .container {
        padding: 8px;
    }
    
    header {
        padding: 15px 20px;
        margin-bottom: 15px;
    }
    
    .site-title {
        font-size: 1.7rem;
        gap: 12px;
    }
    
    .search-box input {
        padding: 13px 18px;
        font-size: 13px;
    }
    
    .search-box button {
        padding: 13px 20px;
        font-size: 13px;
    }
    
    .sidebar {
        padding: 15px;
    }
    
    .categories-nav ul {
        gap: 6px;
    }
    
    .category-item {
        flex: 1 1 calc(50% - 3px);
        min-width: 100px;
    }
    
    .category-link {
        padding: 8px 5px;
        font-size: 10px;
    }
    
    .content-area {
        padding: 15px;
    }
    
    /* 超小屏手机显示2列 */
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
        gap: 12px;
    }
    
    .website-card {
        padding: 14px;
        min-height: 130px;
    }
    
    .website-card h3 {
        font-size: 0.9rem;
    }
    
    .website-card .website-icon {
        font-size: 1.6rem;
        width: 40px;
        height: 40px;
    }
    
    .modal-header,
    form,
    .modal-body,
    .modal-footer {
        padding: 16px;
    }
    
    .settings-btn {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
    
    .settings-menu {
        width: 220px;
        bottom: 65px;
        padding: 16px;
    }
}

/* 针对常见桌面分辨率的优化 */
@media (width: 2400px) {
    .container,
    .page-container {
        max-width: 2400px;
    }
    
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 30px;
    }
}

@media (width: 1920px) {
    .container {
        max-width: 1800px;
    }
    
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: 28px;
    }
}

@media (width: 1680px) {
    .container {
        max-width: 1600px;
    }
    
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 26px;
    }
}

@media (width: 1440px) {
    .container {
        max-width: 1350px;
    }
    
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 24px;
    }
}

@media (width: 1366px) {
    .container {
        max-width: 1300px;
    }
    
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
        gap: 22px;
    }
}

@media (width: 1280px) {
    .container {
        max-width: 1220px;
    }
    
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 20px;
    }
}

@media (width: 1024px) {
    .container {
        max-width: 960px;
    }
    
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
        gap: 20px;
    }
}

@media (width: 768px) {
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 20px;
    }
}

@media (width: 640px) {
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 18px;
    }
}

@media (width: 480px) {
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 15px;
    }
}

@media (width: 375px) {
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(135px, 1fr));
        gap: 14px;
    }
}

@media (width: 360px) {
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
        gap: 12px;
    }
    
    .site-title {
        font-size: 1.6rem;
        gap: 10px;
    }
    
    .empty-state {
        padding: 50px 20px;
    }
    
    .empty-state i {
        font-size: 4rem;
    }
    
    .empty-state h3 {
        font-size: 1.5rem;
    }
}

@media (width: 320px) {
    .category-websites-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 10px;
    }
    
    .site-title {
        font-size: 1.6rem;
        gap: 10px;
    }
    
    .empty-state {
        padding: 50px 20px;
    }
    
    .empty-state i {
        font-size: 4rem;
    }
    
    .empty-state h3 {
        font-size: 1.5rem;
    }
}