/* 趣味机器学习 - 自定义样式 */
/* 在 Pico.css 之后加载，覆盖部分样式 */

/* ===== 步骤式代码构建 ===== */
.build-steps {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin: 1rem 0;
}
.build-step-card {
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 1rem 1.2rem;
    background: #fff;
}
.build-step-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.6rem;
}
.build-step-badge {
    background: #5b8def;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.15rem 0.55rem;
    border-radius: 4px;
    white-space: nowrap;
}
.build-step-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: #1e293b;
}
.step-editor-container {
    margin: 0.6rem 0;
    border-radius: 6px;
    overflow: hidden;
}
.build-step-note {
    font-size: 0.82rem;
    color: #64748b;
    margin: 0.4rem 0 0;
}

/* ===== 导航栏布局 ===== */
.top-nav {
    max-width: none;
    background: #1e293b;
    border-bottom: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 60px;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    box-shadow:
        0 4px 6px -1px rgba(0, 0, 0, 0.07),
        0 2px 4px -2px rgba(0, 0, 0, 0.05);
}

.nav-brand {
    margin-right: auto;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 0.95rem;
}

.brand-link strong {
    color: #fff;
    font-weight: 700;
}
.brand-icon {
    height: 26px;
    width: 26px;
    border-radius: 5px;
}

.top-nav ul {
    display: flex;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.top-nav .nav-item {
    color: #cbd5e1;
    font-size: 0.875rem;
    padding: 0.4rem 0.75rem;
    border-radius: 4px;
}
.top-nav .nav-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}
.top-nav .nav-item.active {
    background: var(--primary);
    color: #fff;
}

/* 固定导航栏占位 */
body {
    padding-top: 60px;
}

/* ===== 全局字体覆盖（Pico.css 默认偏大）===== */
h1 { font-size: 1.5rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.05rem; }
h4 { font-size: 0.95rem; }
p, li { font-size: 0.9rem; line-height: 1.7; }

@media (max-width: 767px) {
    .top-nav ul {
        display: none;
    }
}

/* ===== 页面布局 ===== */
@media (max-width: 767px) {
    #content-container {
        padding: 0.75rem;
    }
}
@media (min-width: 768px) {
    .layout,
    .content {
        margin-left: var(--sidebar-width, 200px);
        padding-left: 1.5rem;
        min-height: calc(100vh - 60px);
    }
    #content-container {
        padding: 1rem 1.25rem;
        max-width: 960px;
    }
}

/* ===== Alpine.js ===== */
[x-cloak] {
    display: none !important;
}

/* ===== 通用组件 ===== */
.button {
    padding: 0.4rem 0.85rem;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s;
    background: #333;
    color: #fff;
}
.button:hover {
    background: #111;
}
.button.secondary {
    background: #94a3b8;
}
.button.secondary:hover {
    background: #64748b;
}

.section-wrapper {
    scroll-margin-top: calc(60px + 1rem);
    padding: 1rem;
    margin: 0.5rem 0;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #eee;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    color: #222;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #f0f0f0;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: transparent;
    color: #bbb;
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: 400;
    flex-shrink: 0;
}

.echarts-container,
.pixi-container {
    width: 100%;
    height: 320px;
    margin: 0.75rem 0;
    border-radius: 6px;
    background: #fff;
    border: 1px solid #eee;
}
.pixi-container {
    background: #0f172a;
}
.pixi-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

.demo-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.75rem;
    flex-wrap: wrap;
}


.slider-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.slider-control label {
    font-size: 0.85rem;
    color: #666;
}
.slider-control input[type="range"] {
    width: 100px;
    accent-color: #333;
}
.slider-control span {
    min-width: 36px;
    font-size: 0.85rem;
    color: #333;
    font-weight: 600;
}

/* ===== 代码编辑器 ===== */
.code-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 0;
    background: #252526;
    border: 1px solid #333;
    border-bottom: none;
    border-radius: 6px 6px 0 0;
    padding: 0.25rem 0.5rem 0 0.5rem;
    box-shadow: none;
}

.code-tab {
    padding: 0.5rem 1rem;
    background: transparent;
    border: none;
    border-bottom: 0;
    font-size: 0.8rem;
    color: #888;
    cursor: pointer;
    transition: all 0.15s;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
}

.code-tab:hover {
    color: #ccc;
}

.code-tab.active {
    color: #ffffff;
    border-bottom-color: transparent;
    background: #3c3c3c;
}

.editor-wrapper {
    border: 1px solid #333;
    border-top: none;
    border-radius: 0 0 6px 6px;
    overflow: hidden;
}

.monaco-editor-container {
    width: 100%;
    height: 350px;
}

.editor-toolbar {
    display: flex;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: #252526;
    border-top: 1px solid #333;
}

.editor-btn {
    padding: 0.4rem 0.9rem;
    border: 1px solid #555;
    border-radius: 4px;
    background: #3c3c3c;
    font-size: 0.8rem;
    color: #cccccc;
    cursor: pointer;
    transition: all 0.15s;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
}

.editor-btn:hover {
    background: #505050;
    border-color: #777;
    color: #ffffff;
}

.btn-icon {
    font-size: 0.7rem;
    margin-right: 0.25rem;
}

/* ===== 输出控制台 ===== */
.output-console {
    margin-top: 0.75rem;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    overflow: hidden;
    background: #ffffff;
}

.console-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    background: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
}

.console-title {
    font-size: 0.8rem;
    color: #666;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-weight: 500;
}

.clear-btn {
    background: #ffffff;
    border: 1px solid #d0d0d0;
    border-radius: 4px;
    padding: 0.2rem 0.6rem;
    font-size: 0.75rem;
    color: #666;
    cursor: pointer;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    transition: all 0.15s;
}

.clear-btn:hover {
    background: #f0f0f0;
    border-color: #b0b0b0;
    color: #333;
}

.console-content {
    padding: 0.75rem;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 0.8rem;
    line-height: 1.6;
    color: #444;
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
    margin: 0;
    background: #ffffff;
}

.console-content.success {
    color: #28a745;
}

.console-content.error {
    color: #dc3545;
}

/* ===== 可视化结果 ===== */
.code-visualization {
    margin-top: 0.75rem;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    overflow: hidden;
    background: #ffffff;
}

.viz-header {
    padding: 0.5rem 0.75rem;
    background: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
}

.viz-title {
    font-size: 0.8rem;
    color: #666;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-weight: 500;
}

.viz-container {
    width: 100%;
    height: 280px;
    background: #ffffff;
}

/* ===== 通用内容样式（从 gd.css 移动）===== */

/* 公式框 */
.formula-box {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 6px;
    margin: 0.75rem 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.formula-box > p {
    width: 100%;
    margin: 0.25rem 0 0;
    text-align: left;
}

.formula {
    font-family: "Times New Roman", serif;
    font-size: 1rem;
    font-style: italic;
    margin: 0.5rem 0;
    padding: 0.5rem 1.5rem;
    background: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    display: inline-block;
    overflow-x: auto;
    max-width: 100%;
}

/* 关键点 & 强调框 */
.key-point {
    background: #e8f5e9;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    border-left: 3px solid #4caf50;
    margin: 0.75rem 0;
}

.analogy-box {
    background: #fff3e0;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    border-left: 3px solid #ff9800;
    margin: 0.75rem 0;
}

/* 对比网格 */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 0.75rem;
    margin: 1rem 0;
}

.comparison-item {
    padding: 1rem;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
    background: #ffffff;
}
.comparison-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.comparison-item.warning {
    border-left: 3px solid #f44336;
}
.comparison-item.success {
    border-left: 3px solid #4caf50;
}
.comparison-item.info {
    border-left: 3px solid #2196f3;
}
.comparison-item h4 {
    margin-bottom: 0.4rem;
}
.comparison-item ul {
    margin: 0.4rem 0 0 1.2rem;
}

/* 收敛条件 */
.criteria-list {
    display: grid;
    gap: 1rem;
    margin: 1rem 0;
}
.criteria-item {
    padding: 1.25rem;
    background: #f8f9fa;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
}
.criteria-item h4 {
    margin-bottom: 0.5rem;
}

/* 代码块 */
.code-block {
    background: #1e293b;
    color: #e2e8f0;
    padding: 0.6rem 0.85rem;
    border-radius: 6px;
    font-family: "SF Mono", "Fira Code", monospace;
    font-size: 0.75rem;
    margin-top: 0.5rem;
    overflow-x: auto;
    white-space: pre-wrap;
}

/* SVG图表容器 */
.diagram-container {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 总结区域 */
.summary-section {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #e0e0e0;
}
.summary-section h3 {
    text-align: center;
    margin-bottom: 1rem;
}
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}
.summary-item {
    text-align: center;
    padding: 1rem;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
    background: #ffffff;
}
.summary-item strong {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    padding-bottom: 0.5rem;
    color: #333;
    border-bottom: 1px solid #e0e0e0;
}
.summary-item p {
    margin: 0;
    font-size: 0.85rem;
    color: #666;
    line-height: 1.5;
}

/* ===== 页面通用样式 ===== */

/* 页面标题 */
.page-header {
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #e0e0e0;
}

.page-header h1 {
    font-size: 1.5rem;
    color: #222;
    margin-bottom: 0.5rem;
}

.page-desc {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* 介绍段落 */
.intro-section {
    margin: 1rem 0;
    padding: 0;
}

/* 插图容器 */
.illustration {
    margin: 0.75rem 0;
    text-align: center;
}

/* 可视化提示 */
.visualization-hint {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding: 0.5rem 0.75rem;
    background: #f8f9fa;
    border-radius: 6px;
    font-size: 0.8rem;
    color: #666;
}

.hint-icon {
    font-size: 0.9rem;
}

/* 响应式 */
@media (max-width: 600px) {
    .formula {
        font-size: 1.1rem;
    }
    .diagram-container {
        max-width: 100%;
    }
}

/* ===== 步骤列表 ===== */
.steps-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1.5rem 0;
}

.step-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
}

.step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 50%;
    font-weight: 600;
    flex-shrink: 0;
}

.step-content strong { display: block; margin-bottom: 0.25rem; color: #333; }
.step-content p { margin: 0; color: #666; font-size: 0.9rem; }

/* ===== 代码输出区：图 + 日志并排 ===== */
.output-layout {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.75rem;
    align-items: flex-start;
}

.code-viz {
    flex: 2;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    overflow: hidden;
    background: #fff;
    min-width: 0;
}

.code-console {
    flex: 1;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    overflow: hidden;
    background: #fff;
    min-width: 0;
    display: flex;
    flex-direction: column;
    /* 高度与图表面板对齐：图表 320px + header ~40px */
    height: 360px;
}

/* 日志内容区填满剩余高度并滚动 */
.output-layout .console-content {
    flex: 1;
    overflow-y: auto;
    max-height: none;
}

/* 移动端竖排 */
@media (max-width: 767px) {
    .output-layout {
        flex-direction: column;
    }
    .code-viz,
    .code-console {
        width: 100%;
        height: auto;
    }
    .output-layout .console-content {
        max-height: 200px;
    }
}