/* ===================================================
 * Web Toolbox - 公共样式
 * 面包屑导航、语言切换器、类目导航、页脚、信任栏、
 * 相关工具、入场动画、响应式
 * =================================================== */

/* --- 面包屑导航 --- */
.bc-nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 40px;
    font-size: 13px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1000;
}
.container .bc-nav {
    padding-left: 0;
    padding-right: 0;
}
.bc-nav .bc-left {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}
.bc-nav a {
    color: #94a3b8;
    text-decoration: none;
    transition: color .2s;
}
.bc-nav a:hover {
    color: #7c3aed;
}
.bc-sep {
    color: #64748b;
    margin: 0 6px;
}
.bc-cur {
    color: #e4e4e7;
}

/* --- Header 右侧容器 --- */
.bc-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* --- 主题切换按钮 --- */
.theme-toggle {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #a1a1aa;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.2s ease;
    flex-shrink: 0;
}
.theme-toggle:hover {
    background: rgba(124, 58, 237, 0.2);
    border-color: rgba(124, 58, 237, 0.4);
    color: #e4e4e7;
}
[data-theme="light"] .theme-toggle {
    background: #ffffff;
    border-color: #e4e4e7;
    color: #3f3f46;
}
[data-theme="light"] .theme-toggle:hover {
    background: #f4f4f5;
    border-color: #7c3aed;
    color: #7c3aed;
}

/* --- 语言切换器 --- */
.lang-switcher {
    position: relative;
    flex-shrink: 0;
}
.lang-dropdown {
    position: relative;
    display: inline-block;
}
.lang-current {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}
.lang-current:hover {
    background: rgba(124, 58, 237, 0.2);
    border-color: rgba(124, 58, 237, 0.4);
}
.lang-current::after {
    content: '\25bc';
    font-size: 0.6rem;
    opacity: 0.7;
    transition: transform 0.2s ease;
}
.lang-dropdown.open .lang-current::after {
    transform: rotate(180deg);
}
.lang-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: rgba(26, 26, 46, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    min-width: 140px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    z-index: 100;
    overflow: hidden;
}
.lang-dropdown.open .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.lang-btn {
    display: block;
    width: 100%;
    background: transparent;
    border: none;
    color: #a0a0b8;
    padding: 10px 14px;
    cursor: pointer;
    font-size: 0.9rem;
    text-align: left;
    transition: all 0.15s ease;
}
.lang-btn:hover {
    background: rgba(124, 58, 237, 0.2);
    color: #fff;
}
.lang-btn.active {
    background: rgba(124, 58, 237, 0.3);
    color: #a78bfa;
}

/* --- 类目导航 --- */
.category-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 4px;
    padding: 12px 16px;
    margin: 0 -24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.cat-nav-item {
    color: #71717a;
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.82rem;
    transition: all 0.2s;
    white-space: nowrap;
}
.cat-nav-item:hover {
    color: #c4b5fd;
    background: rgba(124, 58, 237, 0.1);
}
.cat-nav-item.active {
    color: #a78bfa;
    background: rgba(124, 58, 237, 0.15);
    font-weight: 600;
}
[data-theme="light"] .category-nav {
    border-bottom-color: #e4e4e7;
}
[data-theme="light"] .cat-nav-item {
    color: #71717a;
}
[data-theme="light"] .cat-nav-item:hover {
    color: #7c3aed;
    background: rgba(124, 58, 237, 0.06);
}
[data-theme="light"] .cat-nav-item.active {
    color: #7c3aed;
    background: rgba(124, 58, 237, 0.1);
}

/* --- Light 主题：面包屑 --- */
[data-theme="light"] .bc-nav a {
    color: #71717a;
}
[data-theme="light"] .bc-nav a:hover {
    color: #7c3aed;
}
[data-theme="light"] .bc-sep {
    color: #a1a1aa;
}
[data-theme="light"] .bc-cur {
    color: #09090b;
}

/* --- Light 主题：语言切换器 --- */
[data-theme="light"] .lang-current {
    background: #ffffff;
    border-color: #e4e4e7;
    color: #3f3f46;
}
[data-theme="light"] .lang-current:hover {
    background: #f4f4f5;
    border-color: #7c3aed;
}
[data-theme="light"] .lang-menu {
    background: #ffffff;
    border-color: #e4e4e7;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .lang-btn {
    color: #3f3f46;
}
[data-theme="light"] .lang-btn:hover {
    background: #f4f4f5;
    color: #09090b;
}
[data-theme="light"] .lang-btn.active {
    background: #f3f0ff;
    color: #7c3aed;
}

/* --- Light 主题：信任栏 --- */
[data-theme="light"] .trust-bar {
    background: rgba(124, 58, 237, 0.05);
    border-color: rgba(124, 58, 237, 0.15);
}
[data-theme="light"] .trust-item {
    color: #6d28d9;
}

/* --- Light 主题：相关工具标题 --- */
[data-theme="light"] .related-tools h3 {
    border-bottom-color: #e4e4e7;
}

/* --- Light 主题：页脚 --- */
[data-theme="light"] .site-footer {
    border-top-color: #e4e4e7;
    color: #71717a;
}

/* --- 页脚 --- */
.site-footer {
    text-align: center;
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #a0a0b8;
    font-size: 0.9rem;
}
.category-nav + .site-footer {
    border-top: none;
    margin-top: 20px;
}
.site-footer a {
    color: #a78bfa;
    text-decoration: none;
}
.site-footer a:hover {
    text-decoration: underline;
}

/* --- Footer 法律链接 --- */
.footer-links {
    text-align: center;
    margin-bottom: 12px;
    font-size: 0.85rem;
}
.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.2s;
}
.footer-links a:hover {
    color: #a78bfa;
    text-decoration: underline;
}
.footer-links-sep {
    color: #52525b;
    margin: 0 10px;
}
[data-theme="light"] .footer-links a {
    color: #6b7280;
}
[data-theme="light"] .footer-links a:hover {
    color: #7c3aed;
}
[data-theme="light"] .footer-links-sep {
    color: #d4d4d8;
}

/* --- 相关工具 --- */
.related-tools {
    margin: 40px 0;
}
.related-tools h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}
.related-card {
    display: block;
    padding: 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}
.related-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(124, 58, 237, 0.3);
    transform: translateY(-2px);
}
.related-icon {
    font-size: 24px;
    margin-bottom: 8px;
}
.related-card h4, .related-name, .related-title, .related-card > span {
    color: #fff;
    font-weight: 500;
}
.related-card p, .related-desc {
    color: #a0a0b8;
    font-size: 0.8rem;
    margin-top: 4px;
}
[data-theme="light"] .related-card {
    background: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .related-card:hover {
    background: rgba(0, 0, 0, 0.06);
}
[data-theme="light"] .related-card h4, [data-theme="light"] .related-name, [data-theme="light"] .related-title, [data-theme="light"] .related-card > span {
    color: #1a1a2e;
}
[data-theme="light"] .related-card p, [data-theme="light"] .related-desc {
    color: #555;
}

/* --- 信任栏 --- */
.trust-bar {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin: 12px 0 24px;
    padding: 12px 20px;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.2);
    border-radius: 12px;
}
.trust-item {
    font-size: 13px;
    color: #a78bfa;
    white-space: nowrap;
}

/* --- 入场动画 --- */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}
.fade-in-delay1 { animation-delay: 0.15s; }
.fade-in-delay2 { animation-delay: 0.3s; }
.fade-in-delay3 { animation-delay: 0.45s; }
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* --- 响应式 --- */
@media (max-width: 768px) {
    .bc-nav {
        padding: 8px 16px 0;
        font-size: 12px;
    }
    .bc-right {
        gap: 4px;
    }
    .theme-toggle {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }
    .category-nav {
        gap: 2px;
        padding: 8px 8px;
        margin: 0 -16px 16px;
    }
    .cat-nav-item {
        padding: 5px 10px;
        font-size: 0.78rem;
    }
    .trust-bar {
        gap: 12px;
        padding: 10px 12px;
    }
    .trust-item {
        font-size: 12px;
    }
}