[teamai] Push 87 resource(s) from XingfenD

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+# Advanced Reference: Component Patterns & Code Templates
+
+This file contains advanced patterns and code templates to reference when implementing specific tasks.
+
+## Table of Contents
+
+1. [Responsive Slide Engine](#responsive-slide-engine)
+2. [Device Simulation Frames](#device-simulation-frames)
+3. [Tweaks Panel Implementation](#tweaks-panel-implementation)
+4. [Animation Timeline Engine](#animation-timeline-engine)
+5. [Design Canvas (Multi-option Comparison)](#design-canvas)
+6. [Dark Mode Toggle](#dark-mode-toggle)
+7. [Data Visualization Templates](#data-visualization-templates)
+
+---
+
+## Responsive Slide Engine
+
+For building fixed-size presentations that auto-fit to any viewport.
+
+**Key conventions**:
+- Internal arrays use 0-indexed, **but numbers displayed to the user are always 1-indexed**
+- Each `<section class="slide">` gets `data-screen-label="01 Title"`, `data-screen-label="02 Agenda"`, etc. for easy reference
+- Control buttons go **outside** the `.stage` scaled container to ensure usability on small screens
+
+```html
+<style>
+  * { margin: 0; padding: 0; box-sizing: border-box; }
+  body { 
+    background: #000; 
+    display: flex; 
+    align-items: center; 
+    justify-content: center;
+    height: 100vh;
+    overflow: hidden;
+    font-family: system-ui, sans-serif;
+  }
+  .stage {
+    width: 1920px;
+    height: 1080px;
+    position: relative;
+    transform-origin: center center;
+  }
+  .slide {
+    position: absolute;
+    inset: 0;
+    display: none;
+    padding: 80px;
+  }
+  .slide.active { display: flex; }
+  .controls {
+    position: fixed;
+    bottom: 20px;
+    left: 50%;
+    transform: translateX(-50%);
+    display: flex;
+    gap: 12px;
+    z-index: 1000;
+  }
+  .controls button {
+    padding: 8px 16px;
+    border: none;
+    border-radius: 6px;
+    background: rgba(255,255,255,0.15);
+    color: white;
+    cursor: pointer;
+    font-size: 14px;
+  }
+  .slide-counter {
+    position: fixed;
+    bottom: 20px;
+    right: 20px;
+    color: rgba(255,255,255,0.6);
+    font-size: 14px;
+  }
+</style>
+
+<script>
+  // Auto-fit scaling
+  function scaleStage() {
+    const stage = document.querySelector('.stage');
+    const scaleX = window.innerWidth / 1920;
+    const scaleY = window.innerHeight / 1080;
+    const scale = Math.min(scaleX, scaleY);
+    stage.style.transform = `scale(${scale})`;
+  }
+  window.addEventListener('resize', scaleStage);
+  scaleStage();
+
+  // Slide navigation
+  let current = parseInt(localStorage.getItem('slideIndex') || '0');
+  const slides = document.querySelectorAll('.slide');
+  
+  function showSlide(n) {
+    current = Math.max(0, Math.min(n, slides.length - 1));
+    slides.forEach((s, i) => s.classList.toggle('active', i === current));
+    localStorage.setItem('slideIndex', current);
+    // Display 1-indexed to user, store 0-indexed internally
+    document.querySelector('.slide-counter').textContent = `${current + 1} / ${slides.length}`;
+  }
+  
+  document.addEventListener('keydown', e => {
+    if (e.key === 'ArrowRight' || e.key === ' ') showSlide(current + 1);
+    if (e.key === 'ArrowLeft') showSlide(current - 1);
+  });
+  
+  showSlide(current);
+</script>
+```
+
+---
+
+## Device Simulation Frames
+
+### iPhone Frame
+
+```jsx
+const IPhoneFrame = ({ children, title = "App" }) => (
+  <div style={{
+    width: 390,
+    height: 844,
+    borderRadius: 48,
+    border: '12px solid #1a1a1a',
+    overflow: 'hidden',
+    position: 'relative',
+    boxShadow: '0 25px 50px -12px rgba(0,0,0,0.25)',
+    background: '#fff'
+  }}>
+    {/* Status bar */}
+    <div style={{
+      height: 54,
+      display: 'flex',
+      alignItems: 'center',
+      justifyContent: 'space-between',
+      padding: '0 24px',
+      fontSize: 14,
+      fontWeight: 600
+    }}>
+      <span>9:41</span>
+      <div style={{
+        width: 126,
+        height: 34,
+        background: '#1a1a1a',
+        borderRadius: 20,
+        position: 'absolute',
+        left: '50%',
+        transform: 'translateX(-50%)',
+        top: 8
+      }} />
+      <span>⚡ 📶</span>
+    </div>
+    {/* Content */}
+    <div style={{ height: 'calc(100% - 54px)', overflow: 'auto' }}>
+      {children}
+    </div>
+    {/* Home indicator */}
+    <div style={{
+      position: 'absolute',
+      bottom: 8,
+      left: '50%',
+      transform: 'translateX(-50%)',
+      width: 134,
+      height: 5,
+      background: '#1a1a1a',
+      borderRadius: 3
+    }} />
+  </div>
+);
+```
+
+### Browser Window Frame
+
+```jsx
+const BrowserFrame = ({ children, url = "https://example.com", title = "Page" }) => (
+  <div style={{
+    borderRadius: 12,
+    overflow: 'hidden',
+    boxShadow: '0 25px 50px -12px rgba(0,0,0,0.25)',
+    border: '1px solid #e5e5e5'
+  }}>
+    {/* Title bar */}
+    <div style={{
+      background: '#f5f5f5',
+      padding: '12px 16px',
+      display: 'flex',
+      alignItems: 'center',
+      gap: 12,
+      borderBottom: '1px solid #e5e5e5'
+    }}>
+      <div style={{ display: 'flex', gap: 8 }}>
+        <div style={{ width: 12, height: 12, borderRadius: '50%', background: '#ff5f57' }} />
+        <div style={{ width: 12, height: 12, borderRadius: '50%', background: '#febc2e' }} />
+        <div style={{ width: 12, height: 12, borderRadius: '50%', background: '#28c840' }} />
+      </div>
+      <div style={{
+        flex: 1,
+        background: '#fff',
+        borderRadius: 6,
+        padding: '6px 12px',
+        fontSize: 13,
+        color: '#666',
+        border: '1px solid #e0e0e0'
+      }}>
+        {url}
+      </div>
+    </div>
+    {/* Content */}
+    <div style={{ background: '#fff' }}>
+      {children}
+    </div>
+  </div>
+);
+```
+
+---
+
+## Tweaks Panel Implementation
+
+```jsx
+const TweaksPanel = ({ config, onChange, visible }) => {
+  if (!visible) return null;
+  
+  return (
+    <div style={{
+      position: 'fixed',
+      bottom: 20,
+      right: 20,
+      width: 280,
+      background: 'rgba(24, 24, 27, 0.95)',
+      backdropFilter: 'blur(12px)',
+      borderRadius: 12,
+      padding: 16,
+      color: '#fff',
+      fontSize: 13,
+      zIndex: 9999,
+      boxShadow: '0 20px 60px rgba(0,0,0,0.3)',
+      border: '1px solid rgba(255,255,255,0.1)'
+    }}>
+      <div style={{ fontWeight: 600, marginBottom: 12, fontSize: 14 }}>Tweaks</div>
+      
+      {Object.entries(config).map(([key, value]) => (
+        <div key={key} style={{ marginBottom: 12 }}>
+          <label style={{ display: 'block', marginBottom: 4, opacity: 0.7 }}>
+            {key}
+          </label>
+          {typeof value === 'boolean' ? (
+            <input
+              type="checkbox"
+              checked={value}
+              onChange={e => onChange({ ...config, [key]: e.target.checked })}
+            />
+          ) : typeof value === 'number' ? (
+            <input
+              type="range"
+              min="0"
+              max="100"
+              value={value}
+              onChange={e => onChange({ ...config, [key]: Number(e.target.value) })}
+              style={{ width: '100%' }}
+            />
+          ) : value.startsWith('#') ? (
+            <input
+              type="color"
+              value={value}
+              onChange={e => onChange({ ...config, [key]: e.target.value })}
+            />
+          ) : (
+            <input
+              type="text"
+              value={value}
+              onChange={e => onChange({ ...config, [key]: e.target.value })}
+              style={{
+                width: '100%',
+                background: 'rgba(255,255,255,0.1)',
+                border: '1px solid rgba(255,255,255,0.2)',
+                borderRadius: 4,
+                padding: '4px 8px',
+                color: '#fff'
+              }}
+            />
+          )}
+        </div>
+      ))}
+    </div>
+  );
+};
+```
+
+---
+
+## Animation Timeline Engine
+
+```jsx
+const useTime = (duration = 5000) => {
+  const [time, setTime] = React.useState(0);
+  const [playing, setPlaying] = React.useState(true);
+  const frameRef = React.useRef();
+  const startRef = React.useRef();
+  
+  React.useEffect(() => {
+    if (!playing) return;
+    const animate = (timestamp) => {
+      if (!startRef.current) startRef.current = timestamp;
+      const elapsed = (timestamp - startRef.current) % duration;
+      setTime(elapsed / duration); // 0 to 1
+      frameRef.current = requestAnimationFrame(animate);
+    };
+    frameRef.current = requestAnimationFrame(animate);
+    return () => cancelAnimationFrame(frameRef.current);
+  }, [playing, duration]);
+  
+  return { time, playing, setPlaying };
+};
+
+const Easing = {
+  linear: t => t,
+  easeInOut: t => t < 0.5 ? 2 * t * t : -1 + (4 - 2 * t) * t,
+  easeOut: t => 1 - Math.pow(1 - t, 3),
+  easeIn: t => t * t * t,
+  spring: t => 1 - Math.pow(Math.E, -6 * t) * Math.cos(8 * t)
+};
+
+const interpolate = (t, from, to, easing = Easing.easeInOut) => {
+  const progress = easing(Math.max(0, Math.min(1, t)));
+  return from + (to - from) * progress;
+};
+
+// Usage example:
+// const { time } = useTime(3000);
+// const opacity = interpolate(time, 0, 1);
+// const x = interpolate(time, -100, 0, Easing.spring);
+```
+
+---
+
+## Design Canvas
+
+For displaying multiple design options side by side for comparison:
+
+```jsx
+const DesignCanvas = ({ options, columns = 3 }) => (
+  <div style={{
+    display: 'grid',
+    gridTemplateColumns: `repeat(${columns}, 1fr)`,
+    gap: 24,
+    padding: 40,
+    background: '#f8f9fa',
+    minHeight: '100vh'
+  }}>
+    {options.map((option, i) => (
+      <div key={i} style={{
+        background: '#fff',
+        borderRadius: 12,
+        overflow: 'hidden',
+        boxShadow: '0 1px 3px rgba(0,0,0,0.1)'
+      }}>
+        <div style={{
+          padding: '12px 16px',
+          borderBottom: '1px solid #eee',
+          fontSize: 13,
+          fontWeight: 600,
+          color: '#666'
+        }}>
+          Option {String.fromCharCode(65 + i)}: {option.label}
+        </div>
+        <div style={{ padding: 16 }}>
+          {option.content}
+        </div>
+      </div>
+    ))}
+  </div>
+);
+```
+
+---
+
+## Dark Mode Toggle
+
+```jsx
+const ThemeProvider = ({ children }) => {
+  const [dark, setDark] = React.useState(
+    window.matchMedia('(prefers-color-scheme: dark)').matches
+  );
+  
+  const theme = dark ? {
+    bg: '#0a0a0b',
+    surface: '#18181b',
+    border: '#27272a',
+    text: '#fafafa',
+    textMuted: '#a1a1aa',
+    primary: '#3b82f6'
+  } : {
+    bg: '#ffffff',
+    surface: '#f4f4f5',
+    border: '#e4e4e7',
+    text: '#18181b',
+    textMuted: '#71717a',
+    primary: '#2563eb'
+  };
+  
+  return (
+    <ThemeContext.Provider value={{ theme, dark, setDark }}>
+      <div style={{ background: theme.bg, color: theme.text, minHeight: '100vh' }}>
+        {children}
+      </div>
+    </ThemeContext.Provider>
+  );
+};
+```
+
+---
+
+## Data Visualization Templates
+
+### Chart.js Quick Start
+
+```html
+<canvas id="myChart" width="800" height="400"></canvas>
+<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
+<script>
+  const ctx = document.getElementById('myChart').getContext('2d');
+  new Chart(ctx, {
+    type: 'line', // bar, pie, doughnut, radar, etc.
+    data: {
+      labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun'],
+      datasets: [{
+        label: 'Revenue',
+        data: [12, 19, 3, 5, 2, 3],
+        borderColor: '#3b82f6',
+        backgroundColor: 'rgba(59, 130, 246, 0.1)',
+        tension: 0.4,
+        fill: true
+      }]
+    },
+    options: {
+      responsive: true,
+      plugins: {
+        legend: { display: false }
+      },
+      scales: {
+        y: { beginAtZero: true, grid: { color: '#f0f0f0' } },
+        x: { grid: { display: false } }
+      }
+    }
+  });
+</script>
+```
+
+---
+
+## Color System Best Practices
+
+Use oklch to define a harmonious color system:
+
+```css
+:root {
+  /* oklch-based color system */
+  --primary-h: 250;  /* hue */
+  --primary: oklch(0.55 0.25 var(--primary-h));
+  --primary-light: oklch(0.75 0.15 var(--primary-h));
+  --primary-dark: oklch(0.35 0.2 var(--primary-h));
+  
+  /* Neutrals */
+  --gray-50: oklch(0.98 0.002 250);
+  --gray-100: oklch(0.96 0.004 250);
+  --gray-200: oklch(0.92 0.006 250);
+  --gray-300: oklch(0.87 0.008 250);
+  --gray-400: oklch(0.71 0.01 250);
+  --gray-500: oklch(0.55 0.014 250);
+  --gray-600: oklch(0.45 0.014 250);
+  --gray-700: oklch(0.37 0.014 250);
+  --gray-800: oklch(0.27 0.014 250);
+  --gray-900: oklch(0.21 0.014 250);
+}
+```
+
+---
+
+## Font Recommendations (Non-default Choices)
+
+> ⚠️ **These are experience-based suggestions, not hard rules.**
+> - Always prefer fonts already specified by the brand or design system; only refer to this table when the user hasn't provided any font scheme.
+> - The only hard rule: **Avoid Inter / Roboto / Arial / Fraunces / system-ui — fonts overused by AI-generated content** that instantly signal "this was assembled by AI."
+> - When choosing fonts, focus on "personality fit" rather than "what's trendy." The table below lists common high-quality choices, not an exhaustive list.
+
+| Use Case | Recommendation | Google Fonts Name |
+|------|------|------------------|
+| Modern headings | Plus Jakarta Sans | Plus+Jakarta+Sans |
+| Elegant body text | Outfit | Outfit |
+| Technical feel | Space Grotesk | Space+Grotesk |
+| Premium brand | Sora | Sora |
+| Editorial feel | Newsreader | Newsreader |
+| Handwritten style | Caveat | Caveat |
+| Monospace / code | JetBrains Mono | JetBrains+Mono |
+
+```html
+<link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap" rel="stylesheet">
+```
+
+---
+
+## Color × Font Pairing Reference
+
+> ⚠️ **These are experience-based pairing suggestions, not hard rules.** When you have **absolutely no design context**, pick one as a starting point — it's far better than starting from Inter + #3b82f6.
+> Once the user provides a brand / design system / reference site, drop this table immediately and follow their materials.
+
+For quickly establishing a visual system with personality:
+
+| Style | Primary Color (oklch) | Font Pairing | Best For |
+|---|---|---|---|
+| Modern tech | `oklch(0.55 0.25 250)` blue-violet | Space Grotesk + Inter | SaaS, dev tools, AI products |
+| Elegant editorial | `oklch(0.35 0.10 30)` warm brown | Newsreader + Outfit | Content platforms, blogs, editorial |
+| Premium brand | `oklch(0.20 0.02 250)` near-black | Sora + Plus Jakarta Sans | Luxury, consulting, finance |
+| Lively consumer | `oklch(0.70 0.20 30)` coral | Plus Jakarta Sans + Outfit | E-commerce, lifestyle, social |
+| Minimal professional | `oklch(0.50 0.15 200)` teal-blue | Outfit + Space Grotesk | Data products, dashboards, B2B |
+| Artisan warmth | `oklch(0.55 0.15 80)` caramel | Caveat (decorative) + Newsreader | Food & beverage, education, creative |
+
+Avoid these combos:
+- ❌ Inter + Roboto + blue buttons (peak AI aesthetic)
+- ❌ Fraunces + purple-pink gradients (overused)
+- ❌ More than three font families (visual chaos)