/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #000;
    --secondary-color: #666;
    --accent-color: #4f46e5;
    --bg-color: #ffffff;
    --text-color: #000;
    --border-color: #e5e5e5;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --card-bg: #fff;
    --hover-bg: rgba(0, 0, 0, 0.02);
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] {
    --primary-color: #fff;
    --secondary-color: #a0a0a0;
    --bg-color: #0a0a0a;
    --text-color: #fff;
    --border-color: #333;
    --card-bg: #1a1a1a;
    --hover-bg: rgba(255, 255, 255, 0.05);
    --accent-color: #4f46e5;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.4);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 300;
    line-height: 1.6;
    color: var(--text-color);
    background: transparent;
    transition: var(--transition);
}

/* 确保html和body在loading状态下支持flexbox布局 */
.loading-page,
.loading-page html {
    margin: 0 !important;
    padding: 0 !important;
}

[data-theme="dark"] body {
    background: var(--bg-color);
    color: var(--text-color);
}

.container {
    max-width: 1550px;
    margin: 0 auto;
    padding: 0 60px;
}

/* Header Styles */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid transparent;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] .header {
    background: rgba(10, 10, 10, 0.8);
}

/* Header with scroll effect */
.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .header.scrolled {
    background: rgba(10, 10, 10, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

.nav {
    padding: 0;
}

.nav-container {
    max-width: 1550px !important;
    margin: 0 auto;
    padding: 0 200px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 24px;
}

/* Logo Styles */
.nav-brand {
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-color);
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.logo-text {
    font-size: 20px;
    font-weight: 500;
    color: var(--primary-color);
}

/* Navigation Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.nav-search {
    position: relative;
}

.search-container {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 12px;
    color: var(--secondary-color);
    z-index: 1;
}

.search-input {
    padding: 10px 12px 10px 40px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
    width: 240px;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

[data-theme="dark"] .search-input {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .search-input::placeholder {
    color: var(--secondary-color);
}

[data-theme="dark"] .search-input:focus {
    border-color: var(--accent-color);
    background: var(--card-bg);
}

/* Navigation Buttons */
.nav-buttons {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-categories {
    padding: 8px 16px;
    background: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 300;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    margin-right: 8px;
}

.btn-categories:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

[data-theme="dark"] .btn-categories {
    border-color: #444;
    color: #ccc;
}

[data-theme="dark"] .btn-categories:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-submit {
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-submit:hover {
    background: #333;
    transform: translateY(-1px);
}

[data-theme="dark"] .btn-submit {
    background: var(--primary-color);
    color: var(--bg-color);
}

[data-theme="dark"] .btn-submit:hover {
    background: #e5e5e5;
    color: var(--bg-color);
}

.btn-theme {
    padding: 8px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    gap: 3px;
}

.mobile-menu-btn span {
    width: 20px;
    height: 2px;
    background: var(--text-color);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 40px 0 60px;
    background: #ffffff;
    position: relative;
}

[data-theme="dark"] .hero {
    background: var(--bg-color);
}

[data-theme="dark"] .hero-title {
    color: var(--text-color);
}

[data-theme="dark"] .hero-description {
    color: var(--secondary-color);
}

.hero-content {
    text-align: center;
    max-width: 1150px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(1.5rem, 3vw, 2.4rem);
    font-weight: 500;
    line-height: 1.1;
    margin-bottom: 16px;
    color: var(--text-color);
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, #4ade80, #22c55e);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.hero-description {
    font-size: 20px;
    color: var(--secondary-color);
    margin-bottom: 40px;
    line-height: 1.6;
    font-weight: 300;
    letter-spacing: 0.5px;
}

/* Hero Actions */
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.btn-primary {
    padding: 16px 32px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 400;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    min-width: 160px;
    height: 56px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    background: linear-gradient(135deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #feca57);
    border-radius: 50px;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: xor;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    opacity: 0;
    transition: var(--transition);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:hover {
    background: #333;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    padding: 12px 48px;
    background: white;
    color: var(--text-color);
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 400;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    min-width: 220px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    background: linear-gradient(135deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #feca57);
    border-radius: 50px;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: xor;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn-secondary:active {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .btn-secondary {
    background: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .btn-secondary::before {
    background: linear-gradient(135deg, #4f46e5, #06b6d4, #10b981, #8b5cf6, #f59e0b);
}

[data-theme="dark"] .btn-secondary:hover {
    background: var(--hover-bg);
    color: var(--text-color);
    border-color: #444;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

[data-theme="dark"] .btn-secondary:active {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 500;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--secondary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 8px;
    display: block;
}

/* Sections */
.editors-choice {
    padding: 1px 0 1px;
}

.editors-choice .container {
    max-width: 1200px;
}

.editors-choice-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.latest-tools {
    padding: 0 0 40px 0;
}

.latest-tools .container {
    max-width: 1200px;
}

.newsletter {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 15px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 16px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-icon {
    color: var(--text-color);
}

.section-description {
    font-size: 18px;
    color: var(--secondary-color);
    margin-bottom: 24px;
}

.view-all-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.view-all-link:hover {
    opacity: 0.8;
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.category-card {
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12), 0 2px 6px rgba(0, 0, 0, 0.08);
    transform: translateZ(0);
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255, 107, 107, 0.05) 100%);
    opacity: 0;
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-12px) translateZ(0) scale(1.03);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.18), 0 12px 24px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--primary-color);
    z-index: 10;
}

.category-card:hover::before {
    opacity: 1;
}

[data-theme="dark"] .category-card {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .category-card:hover {
    background: var(--hover-bg);
    border-color: #444;
}

.category-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
}

.category-count {
    color: var(--secondary-color);
    font-size: 14px;
}

/* Latest Tools Grid */
.latest-tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

/* Section Footer */
.section-footer {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.more-tools-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.more-tools-btn:hover {
    background: #333;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

/* Tool Card - Simple Design */
.tool-card {
    background: var(--bg-color);
    border-radius: 12px;
    padding: 16px;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    min-height: 100px;
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    background: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .tool-card {
    background: var(--card-bg);
    border-color: var(--border-color);
    box-shadow: var(--shadow);
}

[data-theme="dark"] .tool-card:hover {
    background: var(--hover-bg);
    border-color: #444;
    box-shadow: var(--shadow-hover);
}

.tool-icon-container {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    overflow: hidden;
}

.tool-icon-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}

.tool-icon-fallback {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 16px;
    border-radius: 8px;
}

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

.tool-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-color);
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-description {
    color: var(--secondary-color);
    font-size: 14px;
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 移除旧的样式 */
.tool-image,
.tool-content,
.tool-header,
.tool-icon,
.tool-meta,
.tool-tagline,
.tool-footer,
.tool-category,
.tool-pricing {
    display: none;
}

/* Mobile responsive styles for tool cards */
@media (max-width: 480px) {
    .tool-card {
        padding: 12px;
        gap: 10px;
        min-height: 90px;
    }

    .tool-icon-container {
        width: 36px;
        height: 36px;
    }
    
    .tool-icon-fallback {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
    
    .tool-name {
        font-size: 15px;
        margin-bottom: 3px;
    }
    
    .tool-description {
        font-size: 13px;
        line-height: 1.3;
    }
}

/* Loading States - 统一的加载样式 */
/* Main Container Flex Layout for Loading States */
main .container {
    display: flex !important;
    flex-direction: column !important;
    min-height: calc(100vh - 64px - 150px) !important; /* 视口高度 - 导航栏高度 - footer高度 */
    padding-top: 20px !important;
    padding-bottom: 40px !important;
}

/* Categories pages specific container layout */
.categories-main .container {
    display: flex !important;
    flex-direction: column !important;
    min-height: calc(100vh - 64px - 150px) !important; /* 视口高度 - 导航栏高度 - footer高度 */
    padding-top: 20px !important;
    padding-bottom: 40px !important;
    padding-left: 200px !important;
    padding-right: 200px !important;
}

/* Tool Detail Page specific container layout */
.tool-detail-main .container {
    display: flex !important;
    flex-direction: column !important;
    min-height: calc(100vh - 64px - 150px) !important; /* 视口高度 - 导航栏高度 - footer高度 */
    padding-top: 20px !important;
    padding-bottom: 40px !important;
    padding-left: 200px !important;
    padding-right: 200px !important;
}

.loading-state {
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    z-index: 1000 !important;
    width: auto !important;
    height: auto !important;
    visibility: visible !important;
}



.loading-content {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
    gap: 1rem !important;
    margin: 0 !important;
    padding: 0 !important;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    color: var(--secondary-color);
    font-size: 1.1rem;
    margin: 0;
}



/* Loading页面时确保footer显示且无滚动条 */
.loading-page {
    height: 100vh !important;
    overflow: hidden !important;
    display: flex !important;
    flex-direction: column !important;
}

/* Header固定高度 */
.loading-page > .header {
    flex-shrink: 0 !important;
}

/* Main内容区域占据剩余空间并居中loading */
.loading-page > .categories-main,
.loading-page > .tool-detail-main,
.loading-page > main {
    flex: 1 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-height: 0 !important;
    overflow: hidden !important;
    position: relative !important;
}

/* Container在loading状态下隐藏其他内容 */
.loading-page > .categories-main > .container,
.loading-page > .tool-detail-main > .container,
.loading-page > main > .container {
    display: contents !important;
}

/* loading状态在flex容器中自然居中 */
.loading-page .loading-state {
    position: static !important;
    transform: none !important;
    z-index: auto !important;
    top: auto !important;
    left: auto !important;
    width: auto !important;
    height: auto !important;
}



/* Footer固定高度 */
.loading-page > .footer {
    flex-shrink: 0 !important;
}

/* 确保loading状态下的特殊元素隐藏 */
.loading-page .breadcrumb,
.loading-page .category-header,
.loading-page .tools-controls,
.loading-page .tools-container,
.loading-page .pagination-container {
    display: none !important;
}

/* Categories页面特殊的loading状态隐藏 */
.loading-page .page-header,
.loading-page .category-groups-section,
.loading-page .selected-group-content {
    display: none !important;
}

/* 但是要确保loading-state和error-state在categories页面可见 */
.loading-page .loading-state,
.loading-page .error-state {
    display: block !important;
    visibility: visible !important;
}

/* 错误状态在loading页面中的特殊定位 */
.loading-page .error-state {
    position: static !important;
    transform: none !important;
    z-index: auto !important;
    top: auto !important;
    left: auto !important;
    width: auto !important;
    height: auto !important;
}

/* Newsletter Section */
.newsletter {
    background: linear-gradient(135deg, var(--primary-color) 0%, #333 100%);
    color: white;
}

.newsletter-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.newsletter-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.newsletter-description {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.9;
}

.newsletter-form {
    display: flex;
    gap: 12px;
    max-width: 400px;
    margin: 0 auto;
}

.newsletter-input {
    flex: 1;
    padding: 14px 16px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
}

.newsletter-btn {
    padding: 14px 24px;
    background: white;
    color: var(--primary-color);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.newsletter-btn:hover {
    background: #f0f0f0;
}

/* Footer */
.footer {
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
    padding: 12px 0 10px;
}

.footer .container {
    padding-left: 200px;
    padding-right: 200px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 1px;
}

.footer-title {
    font-size: 1.2rem;
    font-weight: 300;
    margin-bottom: 16px;
    color: var(--text-color);
}

.footer-description {
    color: var(--secondary-color);
    margin-bottom: 20px;
    font-size: 0.85rem;
    font-weight: 300;
}

.footer-section {
    flex: 1;
    min-width: 150px;
    max-width: 250px;
}

.footer-heading {
    font-weight: 400;
    margin-bottom: 16px;
    color: var(--text-color);
    font-size: 0.9rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 300;
    font-size: 0.85rem;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
    color: var(--secondary-color);
    font-weight: 300;
    font-size: 0.8rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 16px;
        height: 56px;
    }
    
    .nav-center,
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding: 40px 0 40px;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .latest-tools {
        padding: 0 0 60px 0;
    }
    
    .section-header {
        margin-bottom: 15px;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .categories-grid,
    .tools-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 280px;
    }
}

/* Mobile Menu Styles */
.mobile-menu-open .nav-actions {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
    padding: 20px 24px;
    box-shadow: var(--shadow);
    gap: 16px;
    flex-direction: column;
    align-items: stretch;
}

.mobile-menu-open .nav-search {
    width: 100%;
}

.mobile-menu-open .search-input {
    width: 100%;
}

.mobile-menu-open .nav-buttons {
    flex-direction: row;
    justify-content: space-between;
}

/* Mobile Menu Button Animation */
.mobile-menu-open .mobile-menu-btn span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-open .mobile-menu-btn span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-open .mobile-menu-btn span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Theme Toggle Dark Mode Styles */
[data-theme="dark"] .btn-theme svg {
    transform: rotate(180deg);
}

/* Enhanced Responsive Design */
@media (max-width: 1024px) {
    .nav-container {
        gap: 16px;
    }
    
    .search-input {
        width: 200px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 40px;
        height: 56px;
        position: relative;
    }
    
    .categories-main .container,
    .tool-detail-main .container,
    .footer .container {
        padding-left: 40px !important;
        padding-right: 40px !important;
    }
    
    .categories-main .container,
    .tool-detail-main .container {
        min-height: calc(100vh - 56px - 150px) !important; /* 移动端导航栏高度为56px */
    }
    
    main .container {
        min-height: calc(100vh - 56px - 150px) !important; /* 移动端导航栏高度为56px */
    }
    
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding: 40px 0 25px;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
        .editors-choice-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        justify-content: flex-start;
        gap: 0px;
    }
    
    .footer-section {
        min-width: 120px;
        max-width: 200px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 24px;
    }
    
    .nav-container {
        padding: 0 24px;
    }
    
    .categories-main .container,
    .tool-detail-main .container,
    .footer .container {
        padding-left: 24px !important;
        padding-right: 24px !important;
    }
    
    .categories-main .container,
    .tool-detail-main .container {
        min-height: calc(100vh - 56px - 150px) !important; /* 移动端导航栏高度为56px */
    }
    
    main .container {
        min-height: calc(100vh - 56px - 150px) !important; /* 移动端导航栏高度为56px */
    }
    
    .hero {
        padding: 30px 0 20px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 280px;
    }
    
    .hero-stats {
        gap: 20px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .latest-tools {
        padding: 0 0 30px 0;
    }
    
    .section-header {
        margin-bottom: 8px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .editors-choice-grid {
        grid-template-columns: 1fr;
    }

    .latest-tools-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 0px;
    }
    
    .footer-section {
        max-width: 100%;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles for Accessibility */
.btn-submit:focus,
.btn-theme:focus,
.btn-primary:focus,
.btn-secondary:focus,
.newsletter-input:focus,
.newsletter-btn:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

[data-theme="dark"] .btn-secondary:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000;
        --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    }
    
    [data-theme="dark"] {
        --border-color: #fff;
    }
}

/* ===== UTILITY CLASSES FOR ERROR HANDLING ===== */
.database-error-container {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1rem;
    background: #f8f9fa;
    border-radius: 12px;
    border: 1px solid #e9ecef;
}

.database-error-icon {
    margin-bottom: 1rem;
    font-size: 2.5rem;
}

.database-error-title {
    margin-bottom: 1rem;
    color: #333;
    font-size: 1.25rem;
}

.database-error-message {
    color: #666;
    margin-bottom: 1.5rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
    font-size: 0.9rem;
}

.database-error-tip {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-top: 1rem;
    font-size: 0.85rem;
}

.error-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #dc2626;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.newsletter-success {
    background: #059669 !important;
}

.newsletter-error {
    background: #dc2626 !important;
}

.button-success {
    background: #4ade80 !important;
}

/* ===== 完整的暗色主题样式 ===== */

[data-theme="dark"] .footer {
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
}

[data-theme="dark"] .footer-title {
    color: var(--text-color);
}

[data-theme="dark"] .footer-description {
    color: var(--secondary-color);
}

[data-theme="dark"] .footer-heading {
    color: var(--text-color);
}

[data-theme="dark"] .footer-links a {
    color: var(--secondary-color);
}

[data-theme="dark"] .footer-links a:hover {
    color: var(--text-color);
}

[data-theme="dark"] .newsletter {
    background: var(--bg-color);
}

[data-theme="dark"] .newsletter-title {
    color: var(--text-color);
}

[data-theme="dark"] .newsletter-description {
    color: var(--secondary-color);
}

[data-theme="dark"] .newsletter-input {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .newsletter-input::placeholder {
    color: var(--secondary-color);
}

[data-theme="dark"] .newsletter-btn {
    background: var(--primary-color);
    color: var(--bg-color);
}

[data-theme="dark"] .newsletter-btn:hover {
    background: #e5e5e5;
}

[data-theme="dark"] .section-title {
    color: var(--text-color);
}

[data-theme="dark"] .section-description {
    color: var(--secondary-color);
}

[data-theme="dark"] .view-all-link {
    color: var(--secondary-color);
}

[data-theme="dark"] .view-all-link:hover {
    color: var(--text-color);
}

[data-theme="dark"] .more-tools-btn {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-theme="dark"] .more-tools-btn:hover {
    background: var(--hover-bg);
    border-color: #444;
}

[data-theme="dark"] .tool-name {
    color: var(--text-color);
}

[data-theme="dark"] .tool-description {
    color: var(--secondary-color);
}

[data-theme="dark"] .category-name {
    color: var(--text-color);
}

[data-theme="dark"] .category-count {
    color: var(--accent-color);
}

[data-theme="dark"] .loading-state {
    background: transparent;
}



[data-theme="dark"] .loading-content {
    background: transparent;
    color: var(--text-color);
}

[data-theme="dark"] .loading-spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
}

[data-theme="dark"] .loading-text {
    color: var(--secondary-color);
}



[data-theme="dark"] .database-error-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .database-error-title {
    color: var(--text-color);
}

[data-theme="dark"] .database-error-message {
    color: var(--secondary-color);
}

[data-theme="dark"] .error-notification {
    background: var(--card-bg);
    border-left: 4px solid var(--error-color);
    color: var(--text-color);
}

[data-theme="dark"] .stat-number {
    color: var(--text-color);
}

[data-theme="dark"] .stat-label {
    color: var(--secondary-color);
}

[data-theme="dark"] .mobile-menu-open .nav-actions {
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

/* Submit Tool Form 美化 */
.submit-tool-form-wrapper {
    width: 50%;
    max-width: 680px;
    margin: 40px auto 60px auto;
    background: var(--bg-color);
    border-radius: 18px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.07);
    padding: 36px 32px 28px 32px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}
.submit-tool-form .form-group {
    margin-bottom: 22px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}
.submit-tool-form label {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 8px;
    font-size: 1rem;
}
.submit-tool-form input,
.submit-tool-form textarea {
    font-family: inherit;
    font-size: 1rem;
    padding: 12px 14px;
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--text-color);
    outline: none;
    transition: border-color 0.2s;
    margin-bottom: 0;
}
.submit-tool-form input:focus,
.submit-tool-form textarea:focus {
    border-color: var(--primary-color);
}
.submit-tool-form textarea {
    resize: vertical;
    min-height: 90px;
    max-height: 300px;
}
.submit-tool-form .form-error {
    color: #e53935;
    font-size: 0.92rem;
    margin-top: 4px;
    min-height: 18px;
}
.submit-tool-form .form-success {
    color: #059669;
    font-size: 1rem;
    margin-top: 12px;
    margin-bottom: 0;
    text-align: center;
}
.submit-tool-form .form-error#formError {
    color: #e53935;
    font-size: 1rem;
    margin-top: 12px;
    margin-bottom: 0;
    text-align: center;
}
.submit-tool-form .btn-primary {
    width: 100%;
    height: 50px; /* 或你喜欢的高度 */
    border-radius: 25px; /* 高度一半 */
    padding: 14px 0;
    font-size: 1.1rem;
    font-weight: 700;
    margin-top: 8px;
    margin-bottom: 0;
    box-shadow: 0 2px 8px rgba(102,126,234,0.08);
}
.submit-tool-form .btn-primary:active {
    transform: scale(0.98);
}
.submit-tool-form .required {
    color: #e53935;
    font-size: 1.1em;
    margin-left: 2px;
}
@media (max-width: 600px) {
    .submit-tool-form-wrapper {
        max-width: 98vw;
        padding: 18px 6vw 18px 6vw;
    }
    .submit-tool-form label {
        font-size: 0.98rem;
    }
    .submit-tool-form input,
    .submit-tool-form textarea {
        font-size: 0.98rem;
        padding: 10px 10px;
    }
    .submit-tool-form .btn-primary {
        font-size: 1rem;
        padding: 12px 0;
    }
}

/*Dark*/
[data-theme="dark"] .submit-tool-form-wrapper {
    background: #232323;
    box-shadow: 0 4px 24px rgba(0,0,0,0.25);
}

[data-theme="dark"] .submit-tool-form input,
[data-theme="dark"] .submit-tool-form textarea {
    background: #181818;
    color: #f3f3f3;
    border-color: #444;
}

[data-theme="dark"] .submit-tool-form input:focus,
[data-theme="dark"] .submit-tool-form textarea:focus {
    border-color: var(--primary-color);
}

[data-theme="dark"] .submit-tool-form label {
    color: #f3f3f3;
}

[data-theme="dark"] .submit-tool-form .form-error {
    color: #ff6b6b;
}

[data-theme="dark"] .submit-tool-form .form-success {
    color: #34d399;
}

[data-theme="dark"] .submit-tool-form .btn-primary {
    background: #111;
    color: #fff;
    border: none;
}