/* ========================================
   主样式文件 - main.css
   ======================================== */

/* CSS变量定义 */
:root {
    /* 颜色 */
    --primary-color: #22d3ee;
    --primary-hover: #60a5fa;
    --secondary-color: #34d399;
    --accent-color: #60a5fa;
    --danger-color: #f43f5e;

    /* 背景色 */
    --bg-primary: #111827;
    --bg-secondary: #0f172a;
    --bg-tertiary: #111827;

    /* 文字色 */
    --text-primary: #e5e7eb;
    --text-secondary: #94a3b8;
    --text-tertiary: #94a3b8;

    /* 边框 */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-radius: 16px;
    --border-radius-sm: 10px;

    /* 阴影 */
    --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.25);
    --shadow-xl: 0 10px 30px rgba(0, 0, 0, 0.25);

    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;

    /* 布局 */
    --header-height: 64px;
    --sidebar-width: 260px;
    --max-width: 100%;
}

/* 深色主题 */
[data-theme="dark"] {
    --bg-primary: #1F2937;
    --bg-secondary: #111827;
    --bg-tertiary: #374151;

    --text-primary: #F9FAFB;
    --text-secondary: #D1D5DB;
    --text-tertiary: #9CA3AF;

    --border-color: #374151;

    --shadow-sm: 0 1px 2px 0 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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: radial-gradient(1200px 600px at 10% -10%, rgba(34, 211, 238, 0.12), transparent 60%),
                radial-gradient(800px 400px at 90% 0%, rgba(96, 165, 250, 0.10), transparent 60%),
                var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    width: 100%;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: 4px;
}

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

/* ========================================
   顶部导航栏
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    gap: var(--spacing-lg);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.logo i {
    font-size: 1.75rem;
}

.search-container {
    flex: 1;
    max-width: 600px;
    position: relative;
}

.search-input {
    width: 100%;
    height: 40px;
    padding: 0 var(--spacing-md) 0 40px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(90, 167, 255, 0.16);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

.search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    display: none;
    z-index: 1001;
}

.search-results.active {
    display: block;
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ========================================
   主内容区
   ======================================== */
.app-container {
    display: flex;
    margin-top: var(--header-height);
    margin-left: auto;
    margin-right: auto;
    min-height: calc(100vh - var(--header-height));
    width: 100%;
    max-width: none;
    padding: 0;
    box-sizing: border-box;
    overflow-x: visible;
}

/* 左侧导航栏 */
.sidebar {
    position: fixed;
    left: 0;
    top: var(--header-height);
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background-color: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 900;
    transition: transform var(--transition-normal);
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.sidebar-header h3 i {
    color: var(--primary-color);
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md) 0;
}

.category-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.category-item {
    margin: 0;
}

.category-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border-left: 3px solid transparent;
}

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

.category-link.active {
    background-color: rgba(90, 167, 255, 0.14);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    font-weight: 600;
}

.category-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    color: var(--primary-color);
}

.category-name {
    flex: 1;
    font-size: 0.95rem;
}

.category-count {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    background-color: var(--bg-secondary);
    padding: 2px 8px;
    border-radius: 12px;
}

.sidebar-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.tool-stats {
    display: flex;
    justify-content: center;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.stat-item i {
    color: var(--primary-color);
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--spacing-lg) var(--spacing-md) 100px var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: margin-left var(--transition-normal);
    width: calc(100% - var(--sidebar-width));
    max-width: 100%;
    box-sizing: border-box;
}

/* Hero区域 */
.hero-section {
    width: 100%;
    margin-bottom: var(--spacing-xl);
}

.hero-content {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.1) 0%, rgba(96, 165, 250, 0.1) 100%);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 30%, rgba(34, 211, 238, 0.15) 0%, transparent 50%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero-text {
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.hero-stats .stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.hero-stats .stat-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.hero-stats .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.hero-stats .stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.hero-features {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-features .feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.hero-features .feature-item i {
    color: var(--secondary-color);
}

.main-content section {
    max-width: 1200px;
    width: 100%;
}

.main-content .tools-grid {
    max-width: 100%;
    width: 100%;
}

.sidebar.collapsed + .main-content {
    margin-left: 0;
    width: 100%;
}

.sidebar.show + .main-content {
    margin-left: 0;
    width: 100%;
}

section {
    margin-bottom: var(--spacing-xl);
    width: 100%;
}

.current-category-tools {
    flex: 1;
    width: 100%;
}

/* 底部版权信息 */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    z-index: 800;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-content .footer-info {
    margin-top: var(--spacing-xs);
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.footer-content .footer-info a {
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-content .footer-info a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    width: 100%;
}

.section-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-header h2 i {
    color: var(--primary-color);
}

/* ========================================
   工具网格
   ======================================== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    width: 100%;
}

.tools-grid.list-view {
    grid-template-columns: 1fr;
}

/* ========================================
   分类网格
   ======================================== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

/* ========================================
   空状态
   ======================================== */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-tertiary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state p {
    margin-bottom: var(--spacing-sm);
}

.empty-state .hint {
    font-size: 0.875rem;
}

/* ========================================
   筛选控件
   ======================================== */
.filter-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.select-input {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.select-input:hover {
    border-color: var(--primary-color);
}

.select-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(90, 167, 255, 0.16);
}

/* ========================================
   加载提示
   ======================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    background-color: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    text-align: center;
}

.loading-spinner i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }
}

@media (min-width: 1200px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: var(--spacing-md);
    }
}

@media (max-width: 1199px) and (min-width: 992px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: var(--spacing-md);
    }
}

@media (max-width: 991px) and (min-width: 768px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: var(--spacing-md);
    }
}

@media (max-width: 767px) and (min-width: 480px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: var(--spacing-sm);
    }
}

@media (max-width: 479px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }

    .header-container {
        padding: 0 var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .logo span {
        display: none;
    }

    .logo i {
        font-size: 1.5rem;
    }

    .search-container {
        max-width: none;
        flex: 1;
    }

    .search-input {
        height: 36px;
        font-size: 0.875rem;
    }

    .header-actions {
        gap: var(--spacing-xs);
    }

    .btn-icon {
        width: 36px;
        height: 36px;
    }

    .main-content {
        padding: var(--spacing-md);
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .filter-controls {
        flex-direction: column;
        width: 100%;
    }

    .select-input {
        width: 100%;
    }

    .footer-content p {
        font-size: 0.75rem;
    }

    .footer-content .footer-info {
        font-size: 0.65rem;
    }
}

@media (max-width: 480px) {
    :root {
        --header-height: 52px;
        --spacing-md: 12px;
        --spacing-sm: 6px;
    }

    .header-container {
        padding: 0 var(--spacing-sm);
    }

    .logo i {
        font-size: 1.25rem;
    }

    .search-input {
        height: 32px;
        font-size: 0.8rem;
        padding: 0 var(--spacing-sm) 0 32px;
    }

    .search-icon {
        left: 10px;
        font-size: 0.875rem;
    }

    .btn-icon {
        width: 32px;
        height: 32px;
        font-size: 0.875rem;
    }

    .main-content {
        padding: var(--spacing-sm);
    }

    .section-header h2 {
        font-size: 1rem;
    }

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

    .footer-content .footer-info {
        font-size: 0.6rem;
    }
}