/* ==================== iOS 液态玻璃风格 ==================== */

* { text-decoration: none; list-style: none; }

body {
    min-height: 100vh;
    overflow-x: hidden;
    /* 米黄色主题 - 温暖柔和的渐变 */
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(245, 222, 179, 0.5) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(255, 228, 196, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse at 40% 80%, rgba(238, 213, 183, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(255, 235, 205, 0.35) 0%, transparent 50%),
        var(--bg-body);
    background-attachment: fixed;
}

[data-theme="dark"] body {
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(100, 50, 80, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(50, 80, 120, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse at 40% 80%, rgba(80, 50, 100, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(50, 100, 80, 0.3) 0%, transparent 50%),
        var(--bg-body);
}

[data-theme="light"] body {
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(135, 206, 250, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(255, 182, 193, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse at 40% 80%, rgba(255, 218, 185, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(176, 224, 230, 0.3) 0%, transparent 50%),
        var(--bg-body);
}

[data-theme="green"] body {
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(144, 238, 144, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(152, 251, 152, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse at 40% 80%, rgba(143, 188, 143, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(60, 179, 113, 0.25) 0%, transparent 50%),
        var(--bg-body);
}

/* ==================== 顶部导航栏 - 液态玻璃 ==================== */
.top-nav {
    position: fixed;
    top: 12px;
    left: 12px;
    right: 12px;
    height: 52px;
    /* iOS 液态玻璃效果 */
    background: rgba(255, 255, 255, 0.45);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 100;
    overflow: visible;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .top-nav {
    background: rgba(40, 40, 45, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 30px;
    flex: 1;
    min-width: 0;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.logo-emoji { font-size: 1.3rem; }

/* 分类导航 */
.category-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 0;
    flex: 1;
    min-width: 0;
    overflow: visible; /* 允许下拉菜单显示 */
}

/* 分类项（可能有下拉） */
.category-item {
    position: relative;
    flex-shrink: 0;
}

.category-tab {
    padding: 6px 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 4px;
}

.category-tab:hover {
    color: var(--text-main);
    background: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .category-tab:hover {
    background: rgba(255, 255, 255, 0.1);
}

.category-tab.active {
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.1);
    font-weight: 500;
}

/* 下拉箭头 */
.category-tab .arrow {
    font-size: 0.6rem;
    transition: transform 0.2s;
    opacity: 0.6;
}

.category-item:hover .category-tab .arrow {
    transform: rotate(180deg);
}

/* 下拉菜单 - 液态玻璃 */
.category-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 8px;
    min-width: 150px;
    /* iOS 液态玻璃效果 */
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 14px;
    padding: 8px;
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 150;
}

[data-theme="dark"] .category-dropdown {
    background: rgba(40, 40, 45, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

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

.category-dropdown-item {
    display: block;
    width: 100%;
    padding: 8px 12px;
    font-size: 0.8rem;
    color: var(--text-main);
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    text-align: left;
    white-space: nowrap;
    transition: all 0.15s ease;
}

.category-dropdown-item:hover {
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent);
}

.category-dropdown-item.active {
    background: rgba(var(--accent-rgb), 0.15);
    color: var(--accent);
    font-weight: 500;
}

/* 搜索框 */
.search-wrapper {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.search-input {
    width: 100%;
    padding: 10px 20px 10px 42px;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 10px;
    color: var(--text-main);
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s ease;
}

[data-theme="dark"] .search-input {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.search-input:focus {
    background: rgba(255, 255, 255, 0.9);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb, 124, 77, 255), 0.15);
}

[data-theme="dark"] .search-input:focus {
    background: rgba(255, 255, 255, 0.15);
}

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

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    width: 16px;
    height: 16px;
    pointer-events: none;
}

/* 右侧操作区 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all 0.2s ease;
}

[data-theme="dark"] .theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.theme-toggle:hover {
    background: rgba(0, 0, 0, 0.1);
    transform: scale(1.05);
}

[data-theme="dark"] .theme-toggle:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* ==================== 主内容区 ==================== */
.main-content {
    padding: 80px 40px 60px;
    max-width: 1400px;
    margin: 0 auto;
}

/* 分类区块 */
.section-container {
    margin-bottom: 15px;
}

.section-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
    padding-left: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* 子分类区块 */
.sub-section {
    margin-top: 12px;
    margin-left: 16px;
    padding-left: 16px;
    border-left: 2px solid rgba(var(--accent-rgb), 0.2);
}

.sub-section-title {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 8px;
    padding-left: 4px;
}

/* ==================== 卡片网格 ==================== */
.card-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

/* ==================== 液态玻璃卡片 ==================== */
.nav-card {
    position: relative;
    /* iOS 液态玻璃效果 */
    background: rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(30px) saturate(150%);
    -webkit-backdrop-filter: blur(30px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 14px;
    padding: 10px 16px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    box-shadow: 
        0 4px 16px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .nav-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 
        0 4px 16px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.nav-card:hover {
    transform: translateY(-3px) scale(1.02);
    background: rgba(255, 255, 255, 0.55);
    box-shadow: 
        0 12px 32px rgba(0, 0, 0, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.7);
    border-color: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .nav-card:hover {
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 
        0 12px 32px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.nav-card:active {
    transform: translateY(-1px) scale(0.98);
}

/* 隐藏项样式 */
.nav-card.hidden-item {
    border: 1px dashed var(--accent);
    opacity: 0.85;
}

/* 小图标 */
.nav-card .icon {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    object-fit: contain;
    flex-shrink: 0;
}

/* 图标备用显示 */
.icon-fallback {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    border-radius: 4px;
    font-size: 0.65rem;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

/* 标题 */
.nav-card .title {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-main);
    white-space: nowrap;
    line-height: 1;
}

/* Tooltip 描述 */
.nav-card .tooltip {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.85);
    color: white;
    font-size: 0.7rem;
    padding: 6px 10px;
    border-radius: 6px;
    white-space: nowrap;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    pointer-events: none;
    z-index: 100;
}

.nav-card .tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.85);
}

.nav-card:hover .tooltip {
    opacity: 1;
    visibility: visible;
}

/* ==================== 设置面板 - 液态玻璃 ==================== */
.settings-panel {
    display: none;
    position: fixed;
    top: 80px;
    right: 24px;
    width: 300px;
    /* iOS 液态玻璃效果 */
    background: rgba(255, 255, 255, 0.45);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 20px;
    padding: 24px;
    z-index: 200;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .settings-panel {
    background: rgba(40, 40, 45, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.settings-panel.show { display: block; }

.settings-panel h4 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 14px;
}

.theme-options {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.theme-btn {
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg-body);
    color: var(--text-main);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

.theme-btn.active {
    border-color: var(--accent);
    background: var(--accent);
    color: white;
}

.custom-css-area { margin-top: 20px; }

.custom-css-area textarea {
    width: 100%;
    height: 100px;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px;
    color: var(--text-main);
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.75rem;
    resize: vertical;
    outline: none;
}

[data-theme="dark"] .custom-css-area textarea {
    background: rgba(255, 255, 255, 0.05);
}

.custom-css-area textarea:focus { 
    border-color: var(--accent); 
}

.custom-css-area .hint {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 10px;
}

.apply-btn {
    margin-top: 12px;
    width: 100%;
    padding: 10px;
    background: var(--accent);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.apply-btn:hover { 
    background: var(--accent-hover);
    transform: translateY(-1px);
}

/* ==================== 密码弹窗 ==================== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-overlay.show { display: flex; }

.modal-box {
    /* iOS 液态玻璃效果 */
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(50px) saturate(180%);
    -webkit-backdrop-filter: blur(50px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 28px;
    padding: 40px;
    width: 340px;
    text-align: center;
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .modal-box {
    background: rgba(40, 40, 45, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.modal-box h3 { 
    margin-bottom: 24px; 
    font-size: 2rem; 
}

.modal-box input {
    width: 100%;
    padding: 14px 18px;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    margin-bottom: 16px;
    text-align: center;
}

[data-theme="dark"] .modal-box input {
    background: rgba(255, 255, 255, 0.1);
}

.modal-box input:focus { 
    border-color: var(--accent); 
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb, 124, 77, 255), 0.15);
}

.modal-box button {
    width: 100%;
    padding: 14px;
    background: var(--accent);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.modal-box button:hover { 
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.modal-box .error {
    color: #ff6b6b;
    font-size: 0.85rem;
    margin-top: 12px;
}

/* ==================== 返回顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    /* 液态玻璃效果 */
    background: rgba(255, 255, 255, 0.45);
    backdrop-filter: blur(30px) saturate(150%);
    -webkit-backdrop-filter: blur(30px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 4px 16px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .back-to-top {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 
        0 8px 24px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
    color: var(--text-main);
}

/* ==================== 页脚 ==================== */
.site-footer {
    position: fixed;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    color: var(--text-muted);
    opacity: 0.4;
    transition: opacity 0.3s;
    z-index: 40;
}

.site-footer:hover { opacity: 1; }

.site-footer a {
    color: var(--accent);
    text-decoration: none;
}

.site-footer a:hover { text-decoration: underline; }

.footer-custom { margin-right: 8px; }

.footer-inner {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ==================== 加载/空状态 ==================== */
.loading, .empty-state {
    text-align: center;
    padding: 100px 40px;
    color: var(--text-muted);
    font-size: 1rem;
}

/* ==================== 入场动画 ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-container {
    animation: fadeInUp 0.5s ease-out;
    animation-fill-mode: both;
}

.section-container:nth-child(1) { animation-delay: 0s; }
.section-container:nth-child(2) { animation-delay: 0.1s; }
.section-container:nth-child(3) { animation-delay: 0.2s; }
.section-container:nth-child(4) { animation-delay: 0.3s; }
.section-container:nth-child(5) { animation-delay: 0.4s; }
.section-container:nth-child(6) { animation-delay: 0.5s; }

/* ==================== 移动端适配 ==================== */
@media (max-width: 768px) {
    .top-nav {
        top: 8px;
        left: 8px;
        right: 8px;
        padding: 0 14px;
        height: 46px;
        border-radius: 14px;
    }
    
    .nav-left {
        gap: 10px;
        width: 100%;
        order: 1;
    }
    
    .nav-right {
        position: absolute;
        right: 14px;
        top: 50%;
        transform: translateY(-50%);
    }
    
    .logo { font-size: 1rem; }
    .logo-emoji { font-size: 1.1rem; }
    
    .category-nav {
        display: none; /* 移动端隐藏顶部分类导航 */
    }
    
    .search-wrapper {
        width: 140px;
    }
    
    .search-input {
        padding: 8px 14px 8px 36px;
        font-size: 0.85rem;
    }
    
    .search-icon {
        left: 12px;
        width: 14px;
        height: 14px;
    }
    
    .main-content {
        padding: 70px 16px 40px;
    }
    
    .section-container {
        margin-bottom: 25px;
    }
    
    .section-title {
        font-size: 0.75rem;
        margin-bottom: 14px;
    }
    
    .card-grid {
        gap: 10px;
    }
    
    .nav-card {
        padding: 6px 10px;
        border-radius: 6px;
        gap: 6px;
    }
    
    .nav-card .icon {
        width: 16px;
        height: 16px;
    }
    
    .icon-fallback {
        width: 16px;
        height: 16px;
        font-size: 0.55rem;
    }
    
    .nav-card .title {
        font-size: 0.75rem;
    }
    
    .nav-card .tooltip {
        display: none; /* 移动端不显示 tooltip */
    }
    
    .settings-panel {
        right: 8px;
        left: 8px;
        width: auto;
        top: 62px;
        padding: 20px;
        border-radius: 16px;
    }
    
    .theme-toggle {
        width: 30px;
        height: 30px;
        font-size: 0.95rem;
    }
}