/* AI导航公共样式文件 */
:root {
    --primary-color: #7B68EE;
    --primary-dark: #5D4FDB;
    --primary-light: #9370DB;
    --secondary-color: #1E9FFF;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #e6e6e6;
    --shadow: 0 2px 12px rgba(0,0,0,.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 50px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.view-toggle {
    display: flex;
    gap: 5px;
    background: var(--card-bg);
    border-radius: 12px;
    padding: 12px;
    margin-bottom: 10px;
}

.view-btn {
    padding: 6px 12px;
    border: none;
    background: none;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-light);
    transition: all 0.3s;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* 通用容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 通用按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(123, 104, 238, 0.3);
}

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

.btn-secondary:hover {
    background: #1a8ae6;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid white;
    color: white;
}

.btn-outline:hover {
    background: var(--bg-color);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

/* 卡片样式 */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,.15);
}

/* 网格布局 */
.grid {
    display: grid;
    gap: 20px;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* 工具网格布局 */
.tools-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.tools-grid .tool-card {
    flex: 0 0 calc(25% - 20px);
    box-sizing: border-box;
}

/* 列表视图 */
.tools-grid.list-view {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.tools-grid.list-view .tool-card {
    flex: 0 0 100%;
    width: 100%;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .tools-grid .tool-card {
        flex: 0 0 calc(33.333% - 20px);
    }
}

@media (max-width: 768px) {
    .tools-grid .tool-card {
        flex: 0 0 calc(50% - 20px);
    }
    
    .tools-grid.list-view .tool-card {
        flex: 0 0 100%;
    }
}

/* 暗色主题 */
.dark-theme {
    --bg-color: #1a1a1a;
    --card-bg: #2d2d2d;
    --text-color: #ffffff;
    --text-light: #b0b0b0;
    --border-color: #404040;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .grid-cols-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .grid-cols-4,
    .grid-cols-3,
    .grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
    
    .container {
        padding: 0 15px;
    }
    
    /* 手机端隐藏浮动按钮 */
    .floating-buttons {
        display: none;
    }
}

/* 单个卡片布局 - 固定宽度，左对齐 */
.tools-grid.grid-cols-4:has(.tool-card:only-child) {
    justify-content: flex-start;
    max-width: 100%;
}

.tools-grid.grid-cols-4:has(.tool-card:only-child) .tool-card {
    max-width: 300px;
}

/* 手机端单个卡片布局 */
@media (max-width: 768px) {
    .tools-grid.grid-cols-4:has(.tool-card:only-child),
    .tools-grid.grid-cols-3:has(.tool-card:only-child),
    .tools-grid.grid-cols-2:has(.tool-card:only-child) {
        grid-template-columns: repeat(1, 1fr);
        justify-content: flex-start;
    }
    
    .tools-grid.grid-cols-4:has(.tool-card:only-child) .tool-card,
    .tools-grid.grid-cols-3:has(.tool-card:only-child) .tool-card,
    .tools-grid.grid-cols-2:has(.tool-card:only-child) .tool-card {
        max-width: 300px;
    }
}

/* 工具类 */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

/* ==================== 侧边栏样式 ==================== */
.sidebar {
    width: 280px;
    background: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    padding: 20px;
    position: sticky;
    top: 90px;
    height: calc(100vh - 110px);
    overflow-y: auto;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.sidebar.collapsed {
    width: 70px;
    padding: 20px 10px;
}

.sidebar.collapsed .nav-text,
.sidebar.collapsed .nav-section-title,
.sidebar.collapsed .collapse-text,
.sidebar.collapsed .language-options,
.sidebar.collapsed .selected-language span {
    display: none;
}

.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: 12px 0;
}

.sidebar.collapsed .nav-icon {
    margin-right: 0;
    font-size: 18px;
}

.sidebar.collapsed .sidebar-footer {
    flex-direction: column;
    gap: 15px;
}

.sidebar.collapsed .language-selector {
    justify-content: center;
}

.sidebar.collapsed .collapse-btn {
    width: 100%;
    justify-content: center;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.nav-section {
    margin-bottom: 25px;
}

.nav-section-title {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-light);
    margin-bottom: 15px;
    letter-spacing: 0.5px;
    padding-left: 10px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    border-radius: var(--radius-sm);
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s;
    margin-bottom: 5px;
    position: relative;
}

.nav-item:hover {
    background: rgba(123, 104, 238, 0.08);
    color: var(--primary-color);
    transform: translateX(3px);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(123, 104, 238, 0.15), rgba(93, 79, 219, 0.1));
    color: var(--primary-color);
    font-weight: 500;
    border-left: 3px solid var(--primary-color);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--primary-color);
    border-radius: 0 2px 2px 0;
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    font-size: 16px;
    color: inherit;
}

.nav-text {
    font-size: 14px;
    font-weight: 500;
    flex: 1;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.language-selector {
    position: relative;
}

.custom-language-select {
    position: relative;
    cursor: pointer;
}

.selected-language {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.selected-language:hover {
    border-color: var(--primary-color);
}

.language-flag {
    width: 20px;
    height: 15px;
    object-fit: cover;
    border-radius: 2px;
}

.language-options {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
    margin-bottom: 5px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s;
    z-index: 100;
}

.custom-language-select.open .language-options {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    transition: all 0.2s;
}

.language-option:hover {
    background: var(--bg-color);
}

.collapse-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 10px 15px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-color);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.collapse-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(123, 104, 238, 0.2);
}

/* 侧边栏展开按钮（手机端） */
.sidebar-toggle {
    display: none;
    position: relative;
    top: auto;
    left: auto;
    z-index: 1001;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(123, 104, 238, 0.3);
    transition: all 0.3s;
    flex-shrink: 0;
}

.sidebar-toggle:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

/* 手机端侧边栏遮罩 */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: -300px;
        height: 100vh;
        width: 280px;
        z-index: 1000;
        border-radius: 0;
        border-right: 1px solid var(--border-color);
        transition: left 0.3s ease;
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .sidebar-toggle {
        display: flex;
    }
    
    .sidebar-overlay.active {
        display: block;
    }
    
    /* 手机端隐藏header中的logo */
    .mobile-hidden {
        display: none;
    }
    
    .main-container {
        margin-top: 20px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 260px;
    }
    
    .sidebar-toggle {
        /* 移除固定定位，现在在header内对齐 */
    }
}
/* ==================== 分类页面布局 ==================== */
.type-container {
    display: flex;
    gap: 30px;
    max-width: 100%;
    margin: 0 auto;
    padding: 20px;
    position: relative;
}

.type-content {
    flex: 1;
    min-width: 0; /* 防止内容溢出 */
}

@media (max-width: 992px) {
    .type-container {
        flex-direction: column;
        gap: 20px;
        padding: 15px;
    }
    
    .type-content {
        width: 100%;
    }
}


/* 暗色主题适配 */
.dark-theme .sidebar {
    background: var(--card-bg);
    border-color: var(--border-color);
}

.dark-theme .nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.dark-theme .selected-language,
.dark-theme .collapse-btn {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
}