/* ═══════════════════════════════════════════
   指标说明页样式 (metric_guide.css)
   ═══════════════════════════════════════════ */

/* ── Hero 区域 ── */
.mg-hero {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    color: white;
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}
.mg-hero h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 0 8px;
}
.mg-hero h1 i { margin-right: 8px; }
.mg-hero p {
    opacity: 0.9;
    font-size: 1rem;
    margin: 0;
}
.mg-hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}
.mg-hero-stats .stat { text-align: center; }
.mg-hero-stats .stat-num {
    font-size: 1.6rem;
    font-weight: 700;
    display: block;
}
.mg-hero-stats .stat-label {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* ── 搜索框 ── */
.mg-search {
    max-width: 600px;
    margin: -20px auto var(--spacing-xl);
    position: relative;
    z-index: 2;
    padding: 0 var(--spacing-lg);
}
.mg-search input {
    width: 100%;
    padding: 14px 20px 14px 44px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: 1rem;
    background: var(--card-bg);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: border-color 0.2s;
}
.mg-search input:focus {
    border-color: #6366f1;
    outline: none;
}
.mg-search i {
    position: absolute;
    left: calc(var(--spacing-lg) + 14px);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: 1.1rem;
}

/* ── 指标关系全景图 ── */
.mg-relation-card {
    max-width: 1400px;
    margin: 0 auto var(--spacing-xl);
    padding: 0 var(--spacing-lg);
}
.mg-relation-inner {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}
.mg-relation-inner h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}
.mg-relation-chart {
    width: 100%;
    height: 260px;
}
.mg-relation-toggle {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}
.mg-relation-toggle button {
    background: none;
    border: 1px solid var(--border-color);
    padding: 4px 14px;
    font-size: 0.8rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
}
.mg-relation-toggle button:first-child { border-radius: 6px 0 0 6px; }
.mg-relation-toggle button:last-child { border-radius: 0 6px 6px 0; }
.mg-relation-toggle button.active {
    background: #6366f1;
    color: white;
    border-color: #6366f1;
}

/* ── 分类筛选栏 ── */
.mg-cat-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    padding: 0 var(--spacing-lg);
}
.mg-cat-nav button {
    padding: 6px 18px;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}
.mg-cat-nav button:hover {
    border-color: #6366f1;
    color: #6366f1;
}
.mg-cat-nav button.active {
    background: #6366f1;
    color: white;
    border-color: #6366f1;
}
.mg-cat-nav button i { font-size: 1rem; }

/* ── 主内容区域 ── */
.mg-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg) var(--spacing-2xl);
}

/* ── 场景卡片 ── */
.mg-scene {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    transition: box-shadow 0.2s;
}
.mg-scene:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

/* 场景头部 */
.mg-scene-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    cursor: pointer;
    user-select: none;
    gap: var(--spacing-md);
}
.mg-scene-header:hover {
    background: var(--bg-secondary);
}
.mg-scene-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    min-width: 0;
}
.mg-scene-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
    color: white;
}
.mg-scene-info { min-width: 0; }
.mg-scene-name {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 2px;
}
.mg-scene-analogy {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.mg-scene-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
}
.mg-scene-badge {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    background: var(--bg-secondary);
    padding: 2px 10px;
    border-radius: 12px;
    white-space: nowrap;
}
.mg-scene-arrow {
    font-size: 1.1rem;
    color: var(--text-tertiary);
    transition: transform 0.3s;
}
.mg-scene.is-open .mg-scene-arrow {
    transform: rotate(90deg);
}
.mg-scene-link {
    font-size: 0.8rem;
    color: #6366f1;
    text-decoration: none;
    white-space: nowrap;
    padding: 4px 12px;
    border: 1px solid #6366f1;
    border-radius: 6px;
    transition: all 0.2s;
}
.mg-scene-link:hover {
    background: #6366f1;
    color: white;
}

/* 场景描述 */
.mg-scene-desc {
    padding: 0 var(--spacing-xl) var(--spacing-md);
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: none;
}
.mg-scene.is-open .mg-scene-desc { display: block; }

/* 场景内容体 */
.mg-scene-body {
    padding: 0 var(--spacing-xl) var(--spacing-xl);
    display: none;
}
.mg-scene.is-open .mg-scene-body { display: block; }

/* ── 指标卡片 ── */
.mg-metric-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}
.mg-metric {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.2s;
}
.mg-metric:hover {
    border-color: rgba(99,102,241,0.3);
}

/* 指标卡片头部（始终可见） */
.mg-metric-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    gap: var(--spacing-md);
}
.mg-metric-head:hover {
    background: rgba(99,102,241,0.04);
}
.mg-metric-title {
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--text-primary);
    white-space: nowrap;
}
.mg-metric-oneline {
    flex: 1;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-left: var(--spacing-md);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.mg-metric-toggle {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    transition: transform 0.3s;
    flex-shrink: 0;
}
.mg-metric.is-open .mg-metric-toggle {
    transform: rotate(90deg);
}

/* 指标卡片展开内容 */
.mg-metric-detail {
    display: none;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}
.mg-metric.is-open .mg-metric-detail { display: block; }

/* 详情行 */
.mg-detail-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.88rem;
    line-height: 1.7;
}
.mg-detail-row:first-child { padding-top: var(--spacing-md); }
.mg-detail-icon {
    flex-shrink: 0;
    width: 22px;
    text-align: center;
    font-size: 0.95rem;
    margin-top: 2px;
}
.mg-detail-label {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    min-width: 70px;
}
.mg-detail-value {
    color: var(--text-secondary);
    flex: 1;
}
.mg-detail-value code {
    background: rgba(99,102,241,0.1);
    color: #6366f1;
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
}

/* 关联链接 */
.mg-detail-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
}
.mg-detail-links a {
    font-size: 0.8rem;
    color: #6366f1;
    text-decoration: none;
    padding: 3px 10px;
    border: 1px solid rgba(99,102,241,0.3);
    border-radius: 4px;
    transition: all 0.2s;
}
.mg-detail-links a:hover {
    background: #6366f1;
    color: white;
}

/* ── 响应式 ── */
@media (max-width: 768px) {
    .mg-hero h1 { font-size: 1.4rem; }
    .mg-hero-stats { gap: var(--spacing-lg); }
    .mg-hero-stats .stat-num { font-size: 1.3rem; }

    .mg-scene-header {
        padding: var(--spacing-md);
        flex-wrap: wrap;
    }
    .mg-scene-analogy {
        white-space: normal;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        line-clamp: 2;
        -webkit-box-orient: vertical;
    }
    .mg-scene-body {
        padding: 0 var(--spacing-md) var(--spacing-md);
    }
    .mg-scene-desc {
        padding: 0 var(--spacing-md) var(--spacing-sm);
    }
    .mg-scene-link { display: none; }

    .mg-metric-head {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    .mg-metric-oneline {
        display: none;
    }
    .mg-metric-detail {
        padding: 0 var(--spacing-md) var(--spacing-md);
    }
    .mg-detail-row {
        flex-wrap: wrap;
    }

    .mg-relation-chart { height: 200px; }
}