/* ============================================================
   BioInfo 知识图谱 - 自定义学术风格 CSS
   深蓝色主题 (#030D18 背景 + #E1E8F0 文字)
   ============================================================ */

/* ===== 基础覆盖 ===== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.8;
}

/* ===== Markdown 内容渲染 ===== */
.markdown-body {
    font-size: 16px;
    line-height: 1.8;
    color: #E1E8F0;
}

.markdown-body h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #64FFDA;
    border-bottom: 2px solid #112240;
    padding-bottom: 0.5rem;
    margin: 2rem 0 1.5rem;
}

.markdown-body h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #E1E8F0;
    margin: 1.8rem 0 1rem;
    padding-left: 0.75rem;
    border-left: 4px solid #64FFDA;
}

.markdown-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #8892B0;
    margin: 1.5rem 0 0.75rem;
}

.markdown-body p {
    margin: 1rem 0;
    text-align: justify;
}

.markdown-body strong {
    color: #64FFDA;
    font-weight: 600;
}

.markdown-body em {
    color: #8892B0;
    font-style: italic;
}

/* ===== 列表样式 ===== */
.markdown-body ul,
.markdown-body ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.markdown-body li {
    margin: 0.5rem 0;
}

.markdown-body ul li {
    list-style-type: disc;
}

.markdown-body ul li::marker {
    color: #64FFDA;
}

.markdown-body ol li::marker {
    color: #64FFDA;
}

/* ===== 表格样式 ===== */
.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.markdown-body th {
    background-color: #112240;
    color: #64FFDA;
    font-weight: 600;
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 2px solid #64FFDA;
}

.markdown-body td {
    padding: 0.6rem 1rem;
    border-bottom: 1px solid #1a2d4a;
}

.markdown-body tr:hover td {
    background-color: #0A1929;
}

.markdown-body tr:nth-child(even) td {
    background-color: rgba(17, 34, 64, 0.3);
}

/* ===== 代码块样式 ===== */
.markdown-body pre {
    background-color: #0A1929;
    border: 1px solid #112240;
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
    overflow-x: auto;
}

.markdown-body pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.85rem;
    line-height: 1.6;
}

.markdown-body code {
    background-color: #112240;
    color: #64FFDA;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'Fira Code', monospace;
}

/* ===== 引用块样式 ===== */
.markdown-body blockquote {
    border-left: 4px solid #64FFDA;
    background-color: #0A1929;
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.markdown-body blockquote p {
    margin: 0;
    color: #8892B0;
}

/* ===== 链接样式 ===== */
.markdown-body a {
    color: #64FFDA;
    text-decoration: none;
    border-bottom: 1px dashed #64FFDA;
    transition: all 0.2s;
}

.markdown-body a:hover {
    color: #4ECDC4;
    border-bottom-style: solid;
}

/* ===== 分隔线 ===== */
.markdown-body hr {
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, #112240, transparent);
    margin: 2rem 0;
}

/* ===== 知识点标签 ===== */
.knowledge-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.knowledge-tag--required {
    background-color: rgba(100, 255, 218, 0.15);
    color: #64FFDA;
    border: 1px solid rgba(100, 255, 218, 0.3);
}

.knowledge-tag--supplement {
    background-color: rgba(136, 146, 176, 0.15);
    color: #8892B0;
    border: 1px solid rgba(136, 146, 176, 0.3);
}

.knowledge-tag--elective {
    background-color: rgba(255, 215, 0, 0.15);
    color: #FFD700;
    border: 1px solid rgba(255, 215, 0, 0.3);
}

/* ===== 章节卡片 ===== */
.chapter-card {
    background-color: #0A1929;
    border: 1px solid #112240;
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.chapter-card:hover {
    border-color: #64FFDA;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(100, 255, 218, 0.1);
}

.chapter-card--placeholder {
    opacity: 0.6;
    border-style: dashed;
}

/* ===== 统计卡片 ===== */
.stat-card {
    background: linear-gradient(135deg, #0A1929 0%, #112240 100%);
    border: 1px solid #1a2d4a;
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.stat-card__number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #64FFDA;
    line-height: 1;
}

.stat-card__label {
    margin-top: 0.5rem;
    color: #8892B0;
    font-size: 0.875rem;
}

/* ===== 侧边栏 ===== */
.sidebar {
    background-color: #0A1929;
    border-right: 1px solid #112240;
}

.sidebar-item {
    padding: 0.5rem 1rem;
    color: #8892B0;
    font-size: 0.875rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.sidebar-item:hover {
    background-color: #112240;
    color: #E1E8F0;
}

.sidebar-item--active {
    background-color: #112240;
    color: #64FFDA;
    border-left: 3px solid #64FFDA;
}

/* ===== 实体节点卡片 ===== */
.entity-card {
    background-color: #0A1929;
    border: 1px solid #112240;
    border-radius: 10px;
    padding: 1.25rem;
    transition: all 0.3s;
}

.entity-card:hover {
    border-color: #64FFDA;
}

/* ===== 警告横幅 ===== */
.warning-banner {
    background: linear-gradient(90deg, rgba(255, 215, 0, 0.1) 0%, rgba(255, 215, 0, 0.05) 100%);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    color: #FFD700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* ===== 搜索框 ===== */
.search-box {
    background-color: #0A1929;
    border: 1px solid #112240;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: #E1E8F0;
    width: 100%;
    transition: all 0.2s;
}

.search-box:focus {
    outline: none;
    border-color: #64FFDA;
    box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.1);
}

.search-box::placeholder {
    color: #8892B0;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #030D18;
}

::-webkit-scrollbar-thumb {
    background: #112240;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1a2d4a;
}

/* ===== 打印样式 ===== */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .markdown-body h1,
    .markdown-body h2,
    .markdown-body h3 {
        color: black;
    }
    
    nav, footer, .sidebar {
        display: none;
    }
}

/* ===== 图谱页面专用 ===== */
#graph-container {
    width: 100%;
    height: 600px;
    background-color: #0A1929;
    border-radius: 12px;
    border: 1px solid #112240;
}

.graph-node {
    cursor: pointer;
}

.graph-link {
    stroke-opacity: 0.6;
}

/* ===== 动画 ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* ===== 响应式调整 ===== */
@media (max-width: 768px) {
    .markdown-body {
        font-size: 15px;
    }
    
    .markdown-body h1 {
        font-size: 1.5rem;
    }
    
    .markdown-body h2 {
        font-size: 1.25rem;
    }
    
    .stat-card__number {
        font-size: 1.75rem;
    }
}