/* ===== 变量 ===== */
:root {
    --bg: #ffffff;
    --bg-subtle: #f9fafb;
    --bg-sidebar: #f3f4f6;
    --bg-code: #1e293b;
    --text: #111827;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
    --border: #e5e7eb;
    --primary: #3b82f6;
    --primary-bg: #eff6ff;
    --green: #10b981;
    --green-bg: #ecfdf5;
    --orange: #f59e0b;
    --orange-bg: #fffbeb;
    --purple: #8b5cf6;
    --purple-bg: #f5f3ff;
    --red: #ef4444;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', sans-serif;
    --font-mono: 'SFMono-Regular', 'Fira Code', Consolas, monospace;
    --nav-h: 60px;
    --sidebar-w: 280px;
}

/* 暗色模式 */
:root.dark {
    --bg: #0f172a;
    --bg-subtle: #1e293b;
    --bg-sidebar: #0f172a;
    --bg-code: #1e293b;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --text-light: #64748b;
    --border: #334155;
    --primary-bg: #1e3a5f;
    --green-bg: #14532d;
    --orange-bg: #451a03;
    --purple-bg: #3b0764;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
::selection { background: var(--primary); color: #fff; }

/* ===== 顶部导航 ===== */
.top-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 16px;
}

.nav-logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.nav-logo span { color: var(--primary); }
.nav-logo-img { width: 36px; height: 36px; border-radius: 8px; }

.nav-version {
    font-size: 0.78rem;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    padding: 3px 10px;
    border-radius: 10px;
    color: var(--text-muted);
    white-space: nowrap;
}

.nav-links {
    display: flex;
    gap: 4px;
    margin-left: 24px;
}

.nav-links a {
    font-size: 0.92rem;
    padding: 8px 14px;
    border-radius: 6px;
    color: var(--text-muted);
    transition: all 0.15s;
}

.nav-links a:hover { background: var(--bg-subtle); color: var(--text); }
.nav-links a.active { background: var(--primary-bg); color: var(--primary); font-weight: 500; }

.nav-spacer { flex: 1; }

.nav-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.btn {
    font-size: 0.92rem;
    padding: 8px 16px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    transition: all 0.15s;
}

.btn:hover { background: var(--bg-subtle); }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { opacity: 0.9; }

.nav-mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text);
}

/* 移动端下拉导航菜单 */
.nav-mobile-menu {
    display: none;
    position: absolute;
    top: var(--nav-h);
    right: 0;
    width: 220px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 0 0 12px 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
    z-index: 200;
    overflow: hidden;
}
.nav-mobile-menu.open { display: block; }
.nav-mobile-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    font-size: 0.95rem;
    color: var(--text);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: background 0.15s;
}
.nav-mobile-menu a:last-child { border-bottom: none; }
.nav-mobile-menu a:hover { background: var(--bg-subtle); }
.nav-mobile-menu .menu-divider {
    height: 1px;
    background: var(--border);
    margin: 0;
}
.nav-mobile-menu .menu-label {
    padding: 10px 18px 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== 主布局 ===== */
.main-layout {
    margin-top: var(--nav-h);
    display: flex;
    min-height: calc(100vh - var(--nav-h));
}

/* 首页布局：无侧边栏，内容居中铺满 */
.main-layout.home-layout .content {
    max-width: 100%;
    width: 100%;
}

/* ===== 内容区 ===== */
.content {
    flex: 1;
    padding: 28px 32px;
    min-width: 0;
    overflow-x: hidden;
}

/* ===== 页脚 ===== */
.footer {
    border-top: 1px solid var(--border);
    padding: 24px 40px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ===== 侧栏遮罩 ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.35);
    z-index: 90;
    -webkit-tap-highlight-color: transparent;
}

/* ===== 平板 (<=900px) ===== */
@media (max-width: 900px) {
    .top-nav { padding: 0 16px; gap: 10px; }
    .nav-links { display: none; }
    .nav-mobile-toggle { display: flex; }

    .sidebar {
        position: fixed;
        top: var(--nav-h);
        left: -280px;
        width: 280px;
        height: calc(100vh - var(--nav-h));
        z-index: 95;
        transition: left 0.25s ease;
        border-right: 1px solid var(--border);
        overflow-y: auto;
    }
    .sidebar.open { left: 0; }
    .sidebar-overlay.open { display: block; }

    .content { padding: 20px 16px; }
    .api-grid { grid-template-columns: 1fr; }
    .detail-grid { grid-template-columns: 1fr; }
    .detail-grid .detail-right { position: static; }
    .info-cards { grid-template-columns: repeat(2, 1fr); }
    .detail-header-row { flex-wrap: wrap; }
    .detail-header-meta { width: 100%; margin-top: 8px; }
}

/* ===== 手机 (<=600px) ===== */
@media (max-width: 600px) {
    :root { --nav-h: 52px; }

    html, body {
        overflow-x: hidden;
        -webkit-text-size-adjust: 100%;
    }

    /* --- 导航 --- */
    .top-nav {
        padding: 0 14px;
        gap: 8px;
    }
    .nav-logo { font-size: 1rem; }
    .nav-version { display: none; }
    .nav-actions { display: flex; gap: 6px; }
    .nav-actions .btn { padding: 6px 10px; font-size: 0.82rem; }
    /* 手机端隐藏登录/注册按钮，用下拉菜单替代 */
    #userLoggedOut { display: none !important; }
    #userLoggedIn .btn { padding: 5px 8px; font-size: 0.78rem; }
    .nav-mobile-toggle { display: flex; font-size: 1.4rem; }

    /* 手机端隐藏左侧sidebar，导航全走顶部下拉菜单 */
    .sidebar { display: none !important; }
    .sidebar-overlay { display: none !important; }
    .main-layout { margin-left: 0 !important; }

    /* --- 内容区：宽松 --- */
    .content {
        padding: 20px 16px 40px;
    }

    /* --- 列表页 --- */
    .page-header { margin-bottom: 20px; }
    .page-header h1 { font-size: 1.3rem; }
    .page-header p { font-size: 0.88rem; margin-top: 4px; }

    .search-box {
        padding: 14px 18px;
        margin-bottom: 20px;
        border-radius: 12px;
        font-size: 0.92rem;
    }
    .search-box kbd { display: none; }

    .filter-tags {
        gap: 8px;
        margin-bottom: 20px;
        overflow-x: auto;
        flex-wrap: wrap;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 4px;
    }
    .filter-tag {
        padding: 8px 16px;
        font-size: 0.85rem;
        border-radius: 20px;
        white-space: nowrap;
        flex-shrink: 0;
    }

    /* 卡片：一行一张，大间距 */
    .api-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .api-card {
        padding: 16px;
        gap: 12px;
        border-radius: 12px;
    }
    .api-card-icon {
        width: 44px;
        height: 44px;
        border-radius: 10px;
        font-size: 1.2rem;
    }
    .api-card-name {
        font-size: 1rem;
        gap: 6px;
    }
    .api-card-desc {
        font-size: 0.85rem;
        margin-top: 4px;
        -webkit-line-clamp: 2;
    }

    /* ===== 详情页：全部纵向排列 ===== */

    .breadcrumb { font-size: 0.82rem; margin-bottom: 16px; }

    /* 头部：堆叠 */
    .detail-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    .detail-header-icon { width: 48px; height: 48px; font-size: 1.4rem; }
    .detail-header-title { font-size: 1.25rem; gap: 8px; }
    .detail-header-desc { font-size: 0.88rem; margin-top: 6px; }
    .detail-header-meta {
        width: 100%;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 0.82rem;
    }

    /* 信息卡片：一行一张 */
    .info-cards {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .info-card {
        padding: 14px 16px;
        border-radius: 10px;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .info-card-label { font-size: 0.82rem; margin-bottom: 0; }
    .info-card-value { font-size: 0.95rem; text-align: right; }

    /* 接口地址：换行显示 */
    .detail-url {
        padding: 14px;
        font-size: 0.82rem;
        flex-wrap: wrap;
        gap: 8px;
        border-radius: 10px;
    }
    .detail-url .copy-btn {
        font-size: 0.78rem;
        padding: 6px 14px;
        border-radius: 6px;
    }

    /* 分栏：上下排列，文档在前，调试在后 */
    .detail-grid {
        grid-template-columns: 1fr !important;
        gap: 20px;
    }
    .detail-grid .detail-right {
        position: static !important;
    }

    /* 参数表：卡片式，一行一个字段 */
    .params-table {
        border-radius: 10px;
        display: block;
    }
    .params-table thead { display: none; }
    .params-table tbody { display: block; }
    .params-table tr {
        display: block;
        padding: 14px 16px;
        border-bottom: 1px solid var(--border);
    }
    .params-table tr:last-child { border-bottom: none; }
    .params-table td {
        display: block;
        padding: 3px 0;
        border: none;
        font-size: 0.88rem;
        line-height: 1.5;
    }
    .params-table td[data-label]::before {
        content: attr(data-label) "：";
        font-weight: 600;
        color: var(--text-muted);
        font-size: 0.82rem;
    }

    .detail-section h3 { font-size: 1rem; margin-bottom: 12px; }

    /* 返回示例 */
    .response-block {
        padding: 14px;
        font-size: 0.78rem;
        border-radius: 10px;
        max-height: 320px;
        word-break: break-all;
    }

    /* 调试卡片：全宽，大输入框 */
    .try-card { border-radius: 12px; }
    .try-card-header { padding: 14px 18px; font-size: 1rem; }
    .try-card-body { padding: 16px; }

    .try-row {
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        margin-bottom: 16px;
    }
    .try-row label {
        font-size: 0.88rem;
        font-weight: 500;
        min-width: auto;
    }
    .try-row input {
        padding: 12px 14px;
        font-size: 0.92rem;
        width: 100%;
    }
    .try-btn {
        width: 100%;
        padding: 14px;
        font-size: 1rem;
        font-weight: 600;
        border-radius: 10px;
    }
    .try-result {
        padding: 14px;
        font-size: 0.78rem;
        max-height: 320px;
    }
}