<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="1:1">
  <title>8-Point Compass Direction Grid</title>
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      user-select: none;
      -webkit-user-select: none;
    }
    body {
      font-family: system-ui, -apple-system, sans-serif;
      background: #f8fafc;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 100%;
      padding: 10px;
      gap: 10px;
    }
    .header-bar {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      width: 100%;
      max-width: 360px;
    }
    .toggle-btn {
      background: #ffffff;
      border: 1.5px solid #cbd5e1;
      border-radius: 20px;
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 6px;
      box-shadow: 0 1px 3px rgba(0,0,0,0.06);
      transition: all 0.2s ease;
    }
    .toggle-btn.active {
      background: #0284c7;
      color: #ffffff;
      border-color: #0284c7;
      box-shadow: 0 2px 6px rgba(2,132,199,0.3);
    }
    .label-badge {
      background: #fff7ed;
      border: 1.5px solid #ea580c;
      color: #9a3412;
      border-radius: 8px;
      padding: 5px 12px;
      font-size: 14px;
      font-weight: 700;
      text-align: center;
      letter-spacing: -0.2px;
      box-shadow: 0 1px 3px rgba(234,88,12,0.1);
    }
    .map-container {
      position: relative;
      width: 100%;
      max-width: 360px;
      aspect-ratio: 1 / 1;
      background: #e0f2fe;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: inset 0 0 0 1px #bae6fd;
    }
    .grid-board {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      grid-template-rows: repeat(5, 1fr);
      width: 100%;
      height: 100%;
      position: absolute;
      inset: 0;
      background-image: 
        linear-gradient(to right, rgba(14, 116, 144, 0.12) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(14, 116, 144, 0.12) 1px, transparent 1px);
      background-size: 20% 20%;
    }
    .cell {
      position: relative;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      z-index: 2;
    }
    .landmark-icon {
      font-size: 26px;
      line-height: 1;
      filter: drop-shadow(0 2px 3px rgba(0,0,0,0.15));
      transition: transform 0.2s ease;
    }
    .landmark-name {
      font-size: 10px;
      font-weight: 700;
      color: #0f172a;
      background: rgba(255, 255, 255, 0.9);
      padding: 1px 4px;
      border-radius: 4px;
      margin-top: 2px;
      white-space: nowrap;
      border: 0.5px solid rgba(0,0,0,0.08);
    }
    .highlight-ring {
      position: absolute;
      width: 52px;
      height: 52px;
      border-radius: 50%;
      pointer-events: none;
      z-index: 1;
      transition: all 0.3s ease;
    }
    .origin-ring {
      background: rgba(2, 132, 199, 0.15);
      border: 2px solid #0284c7;
    }
    .target-ring {
      background: rgba(234, 88, 12, 0.15);
      border: 2px dashed #ea580c;
      animation: pulseTarget 1.8s infinite ease-in-out;
    }
    @keyframes pulseTarget {
      0%, 100% { transform: scale(1); opacity: 0.9; }
      50% { transform: scale(1.1); opacity: 0.5; }
    }
    svg.overlay-layer {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      z-index: 3;
      pointer-events: none;
    }
    .arrow-path {
      stroke: #ea580c;
      stroke-width: 3.5;
      stroke-linecap: round;
      stroke-dasharray: 6 5;
      animation: dashFlow 1s linear infinite;
      filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
    }
    @keyframes dashFlow {
      to {
        stroke-dashoffset: -22;
      }
    }
    .compass-overlay {
      position: absolute;
      width: 130px;
      height: 130px;
      transform: translate(-50%, -50%);
      pointer-events: none;
      z-index: 2;
      transition: top 0.35s ease, left 0.35s ease;
    }
  </style>
</head>
<body>

  <div class="header-bar">
    <button id="btnCamp" class="toggle-btn active" onclick="setOrigin('camp')">
      From Camp 🏕️
    </button>
    <button id="btnLighthouse" class="toggle-btn" onclick="setOrigin('lighthouse')">
      From Lighthouse 🗼
    </button>
  </div>

  <div id="dirBadge" class="label-badge">
    Lighthouse is Northeast (NE) of Camp
  </div>

  <div class="map-container">
    
    <div id="compassRose" class="compass-overlay" style="top: 50%; left: 50%;">
      <svg viewBox="0 0 140 140" width="100%" height="100%">
        <circle cx="70" cy="70" r="62" fill="rgba(255,255,255,0.85)" stroke="#0284c7" stroke-width="1.5" stroke-dasharray="3 3"/>
        <line x1="70" y1="12" x2="70" y2="128" stroke="#94a3b8" stroke-width="1"/>
        <line x1="12" y1="70" x2="128" y2="70" stroke="#94a3b8" stroke-width="1"/>
        <line x1="28" y1="28" x2="112" y2="112" stroke="#cbd5e1" stroke-width="1"/>
        <line x1="28" y1="112" x2="112" y2="28" stroke="#cbd5e1" stroke-width="1"/>

        
        <text x="70" y="10" text-anchor="middle" font-size="10" font-weight="900" fill="#0369a1">N</text>
        <text x="134" y="73" text-anchor="middle" font-size="10" font-weight="900" fill="#0369a1">E</text>
        <text x="70" y="137" text-anchor="middle" font-size="10" font-weight="900" fill="#0369a1">S</text>
        <text x="6" y="73" text-anchor="middle" font-size="10" font-weight="900" fill="#0369a1">W</text>

        <text x="122" y="24" text-anchor="middle" font-size="9" font-weight="800" fill="#ea580c">NE</text>
        <text x="122" y="124" text-anchor="middle" font-size="9" font-weight="800" fill="#64748b">SE</text>
        <text x="18" y="124" text-anchor="middle" font-size="9" font-weight="800" fill="#ea580c">SW</text>
        <text x="18" y="24" text-anchor="middle" font-size="9" font-weight="800" fill="#64748b">NW</text>
        <circle cx="70" cy="70" r="3" fill="#0284c7" />
      </svg>
    </div>

    
    <div class="grid-board">
      
      <div class="cell"><div class="landmark-icon">🏔️</div><div class="landmark-name">Mountain</div></div>
      <div class="cell"></div>
      <div class="cell"></div>
      <div class="cell"></div>
      <div class="cell"><div class="landmark-icon">🗼</div><div class="landmark-name">Lighthouse</div></div>

      
      <div class="cell"></div><div class="cell"></div><div class="cell"></div><div class="cell"></div><div class="cell"></div>

      
      <div class="cell"></div>
      <div class="cell"></div>
      <div class="cell"><div class="landmark-icon">🏕️</div><div class="landmark-name">Camp</div></div>
      <div class="cell"></div>
      <div class="cell"></div>

      
      <div class="cell"></div><div class="cell"></div><div class="cell"></div><div class="cell"></div><div class="cell"></div>

      
      <div class="cell"><div class="landmark-icon">🐊</div><div class="landmark-name">Swamp</div></div>
      <div class="cell"></div>
      <div class="cell"></div>
      <div class="cell"></div>
      <div class="cell"><div class="landmark-icon">🌲</div><div class="landmark-name">Forest</div></div>
    </div>

    
    <svg class="overlay-layer" viewBox="0 0 100 100" preserveAspectRatio="none">
      <defs>
        <marker id="arrowhead" viewBox="0 0 10 10" refX="6" refY="5" markerWidth="6" markerHeight="6" orient="auto-start-reverse">
          <path d="M 0 1.5 L 8 5 L 0 8.5 z" fill="#ea580c" />
        </marker>
      </defs>
      <line id="dirLine" class="arrow-path" x1="50" y1="50" x2="90" y2="10" marker-end="url(#arrowhead)" />
    </svg>

    
    <div id="originRing" class="highlight-ring origin-ring" style="top: calc(50% - 26px); left: calc(50% - 26px);"></div>
    <div id="targetRing" class="highlight-ring target-ring" style="top: calc(10% - 26px); left: calc(90% - 26px);"></div>
  </div>

  <script>
    const POS = {
      camp: { x: 50, y: 50 },
      lighthouse: { x: 90, y: 10 }
    };

    function setOrigin(origin) {
      const btnCamp = document.getElementById('btnCamp');
      const btnLighthouse = document.getElementById('btnLighthouse');
      const badge = document.getElementById('dirBadge');
      const compass = document.getElementById('compassRose');
      const dirLine = document.getElementById('dirLine');
      const originRing = document.getElementById('originRing');
      const targetRing = document.getElementById('targetRing');

      if (origin === 'camp') {
        btnCamp.classList.add('active');
        btnLighthouse.classList.remove('active');
        badge.textContent = 'Lighthouse is Northeast (NE) of Camp';
        
        compass.style.left = '50%';
        compass.style.top = '50%';

        originRing.style.left = 'calc(50% - 26px)';
        originRing.style.top = 'calc(50% - 26px)';

        targetRing.style.left = 'calc(90% - 26px)';
        targetRing.style.top = 'calc(10% - 26px)';

        dirLine.setAttribute('x1', '50');
        dirLine.setAttribute('y1', '50');
        dirLine.setAttribute('x2', '86');
        dirLine.setAttribute('y2', '14');
      } else {
        btnLighthouse.classList.add('active');
        btnCamp.classList.remove('active');
        badge.textContent = 'Camp is Southwest (SW) of Lighthouse';

        compass.style.left = '90%';
        compass.style.top = '10%';

        originRing.style.left = 'calc(90% - 26px)';
        originRing.style.top = 'calc(10% - 26px)';

        targetRing.style.left = 'calc(50% - 26px)';
        targetRing.style.top = 'calc(50% - 26px)';

        dirLine.setAttribute('x1', '90');
        dirLine.setAttribute('y1', '10');
        dirLine.setAttribute('x2', '54');
        dirLine.setAttribute('y2', '46');
      }
    }

    // Initialize to default Camp -> Lighthouse
    setOrigin('camp');
  </script>
</body>
</html>

Specifying Locations Using 8-Point Compass Directions

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="1:1">
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #1e2945;
      background: #ffffff;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      height: 100%;
      padding: 10px;
      user-select: none;
    }

    /* Stepper & Controls Bar */
    .top-bar {
      width: 100%;
      max-width: 440px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .steps-row {
      display: flex;
      gap: 6px;
      width: 100%;
    }

    .step-tab {
      flex: 1;
      text-align: center;
      padding: 6px 4px;
      font-size: 13px;
      font-weight: 600;
      background: #f1f5f9;
      color: #64748b;
      border-radius: 6px;
      border: 1.5px solid transparent;
      cursor: pointer;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .step-tab.active {
      background: #e0f2fe;
      color: #0284c7;
      border-color: #0284c7;
      box-shadow: 0 1px 3px rgba(2, 132, 199, 0.15);
    }

    .step-tab.completed {
      background: #f0fdf4;
      color: #16a34a;
    }

    /* Main visual stage */
    .stage-wrapper {
      position: relative;
      width: 100%;
      max-width: 380px;
      aspect-ratio: 1 / 1;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    svg.grid-canvas {
      width: 100%;
      height: 100%;
      overflow: visible;
    }

    /* Compass Rose in Corner */
    .compass {
      position: absolute;
      top: 24px;
      left: 36px;
      width: 60px;
      height: 60px;
      pointer-events: none;
      opacity: 0.9;
    }

    /* Bottom Control Bar */
    .controls {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      width: 100%;
    }

    .btn {
      background: #f8fafc;
      border: 1px solid #cbd5e1;
      color: #334155;
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 13px;
      font-weight: 600;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: all 0.2s ease;
    }

    .btn:hover {
      background: #f1f5f9;
      border-color: #94a3b8;
    }

    .btn-primary {
      background: #0284c7;
      border-color: #0284c7;
      color: #ffffff;
    }

    .btn-primary:hover {
      background: #0369a1;
      border-color: #0369a1;
    }
  </style>
</head>
<body>

  
  <div class="top-bar">
    <div class="steps-row">
      <button class="step-tab" id="tab0" onclick="goToStep(0)">Start</button>
      <button class="step-tab" id="tab1" onclick="goToStep(1)">1. 2 units E</button>
      <button class="step-tab" id="tab2" onclick="goToStep(2)">2. 1 unit NE</button>
      <button class="step-tab" id="tab3" onclick="goToStep(3)">3. 2 units N</button>
    </div>
  </div>

  
  <div class="stage-wrapper">
    <svg class="grid-canvas" viewBox="0 0 380 380" id="svgGrid">
      <defs>
        
        <marker id="arrow-e" viewBox="0 0 10 10" refX="7" refY="5" markerWidth="6" markerHeight="6" orient="auto">
          <path d="M 0 1.5 L 8 5 L 0 8.5 z" fill="#2563eb" />
        </marker>
        <marker id="arrow-ne" viewBox="0 0 10 10" refX="7" refY="5" markerWidth="6" markerHeight="6" orient="auto">
          <path d="M 0 1.5 L 8 5 L 0 8.5 z" fill="#0891b2" />
        </marker>
        <marker id="arrow-n" viewBox="0 0 10 10" refX="7" refY="5" markerWidth="6" markerHeight="6" orient="auto">
          <path d="M 0 1.5 L 8 5 L 0 8.5 z" fill="#16a34a" />
        </marker>
      </defs>

      
      
      
      
      <g stroke="#e2e8f0" stroke-width="1.5">
        
        <line x1="65" y1="65" x2="65" y2="315" />
        <line x1="115" y1="65" x2="115" y2="315" />
        <line x1="165" y1="65" x2="165" y2="315" />
        <line x1="215" y1="65" x2="215" y2="315" />
        <line x1="265" y1="65" x2="265" y2="315" />
        <line x1="315" y1="65" x2="315" y2="315" />
        
        <line x1="65" y1="65" x2="315" y2="65" />
        <line x1="65" y1="115" x2="315" y2="115" />
        <line x1="65" y1="165" x2="315" y2="165" />
        <line x1="65" y1="215" x2="315" y2="215" />
        <line x1="65" y1="265" x2="315" y2="265" />
        <line x1="65" y1="315" x2="315" y2="315" />
      </g>

      
      <g font-size="12" fill="#94a3b8" font-weight="600" text-anchor="middle">
        
        <text x="65" y="336">1</text>
        <text x="115" y="336">2</text>
        <text x="165" y="336">3</text>
        <text x="215" y="336">4</text>
        <text x="265" y="336">5</text>
        <text x="315" y="336">6</text>

        
        <text x="46" y="319" text-anchor="end">1</text>
        <text x="46" y="269" text-anchor="end">2</text>
        <text x="46" y="219" text-anchor="end">3</text>
        <text x="46" y="169" text-anchor="end">4</text>
        <text x="46" y="119" text-anchor="end">5</text>
        <text x="46" y="69" text-anchor="end">6</text>
      </g>

      
      
      <line id="path1" x1="65" y1="315" x2="165" y2="315" 
            stroke="#2563eb" stroke-width="3.5" stroke-linecap="round"
            marker-end="url(#arrow-e)" opacity="0" style="transition: opacity 0.3s;" />

      
      <line id="path2" x1="165" y1="315" x2="215" y2="265" 
            stroke="#0891b2" stroke-width="3.5" stroke-linecap="round"
            marker-end="url(#arrow-ne)" opacity="0" style="transition: opacity 0.3s;" />

      
      <line id="path3" x1="215" y1="265" x2="215" y2="165" 
            stroke="#16a34a" stroke-width="3.5" stroke-linecap="round"
            marker-end="url(#arrow-n)" opacity="0" style="transition: opacity 0.3s;" />

      
      <g id="waypoints">
        
        <circle cx="65" cy="315" r="5" fill="#2563eb" />
        <text x="65" y="303" font-size="18" text-anchor="middle">⚓</text>
        <text x="65" y="354" font-size="11" font-weight="700" fill="#2563eb" text-anchor="middle">Dock (1,1)</text>

        
        <circle id="node1" cx="165" cy="315" r="4" fill="#2563eb" opacity="0" />

        
        <circle id="node2" cx="215" cy="265" r="4" fill="#0891b2" opacity="0" />

        
        <circle id="node3" cx="215" cy="165" r="5" fill="#16a34a" opacity="0.3" />
        <text x="215" y="152" font-size="20" text-anchor="middle">🪙</text>
        <text x="215" y="130" font-size="11" font-weight="700" fill="#16a34a" text-anchor="middle">Treasure (4,4)</text>
      </g>

      
      <g id="explorer" transform="translate(65, 315)" style="transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);">
        <circle cx="0" cy="0" r="11" fill="#f59e0b" fill-opacity="0.25" />
        <circle cx="0" cy="0" r="6" fill="#f59e0b" stroke="#ffffff" stroke-width="2" />
      </g>
    </svg>

    
    <svg class="compass" viewBox="0 0 100 100">
      <circle cx="50" cy="50" r="46" fill="#ffffff" stroke="#cbd5e1" stroke-width="1.5" />
      
      <line x1="50" y1="12" x2="50" y2="88" stroke="#e2e8f0" stroke-width="1.5" />
      <line x1="12" y1="50" x2="88" y2="50" stroke="#e2e8f0" stroke-width="1.5" />
      <line x1="23" y1="23" x2="77" y2="77" stroke="#f1f5f9" stroke-width="1" />
      <line x1="77" y1="23" x2="23" y2="77" stroke="#f1f5f9" stroke-width="1" />
      
      
      <polygon points="50,14 46,50 50,46" fill="#ef4444" />
      <polygon points="50,14 54,50 50,46" fill="#dc2626" />
      <polygon points="50,86 46,50 50,54" fill="#94a3b8" />
      <polygon points="50,86 54,50 50,54" fill="#64748b" />
      <polygon points="86,50 50,46 54,50" fill="#94a3b8" />
      <polygon points="86,50 50,54 54,50" fill="#64748b" />
      <polygon points="14,50 50,46 46,50" fill="#94a3b8" />
      <polygon points="14,50 50,54 46,50" fill="#64748b" />

      
      <text x="50" y="10" font-size="10" font-weight="800" fill="#ef4444" text-anchor="middle">N</text>
      <text x="94" y="53" font-size="9" font-weight="700" fill="#475569" text-anchor="middle">E</text>
      <text x="50" y="97" font-size="9" font-weight="700" fill="#475569" text-anchor="middle">S</text>
      <text x="6" y="53" font-size="9" font-weight="700" fill="#475569" text-anchor="middle">W</text>
      <text x="78" y="24" font-size="7.5" font-weight="700" fill="#0891b2" text-anchor="middle">NE</text>
    </svg>
  </div>

  
  <div class="controls">
    <button class="btn" id="prevBtn" onclick="prevStep()">◀ Prev</button>
    <button class="btn btn-primary" id="playBtn" onclick="togglePlay()">▶ Play</button>
    <button class="btn" id="nextBtn" onclick="nextStep()">Next ▶</button>
    <button class="btn" onclick="resetAnimation()">↺ Replay</button>
  </div>

  <script>
    const coords = [
      { x: 65, y: 315 },  // Step 0: Start (1,1)
      { x: 165, y: 315 }, // Step 1: (3,1) East
      { x: 215, y: 265 }, // Step 2: (4,2) NE
      { x: 215, y: 165 }  // Step 3: (4,4) North
    ];

    let currentStep = 0;
    let autoPlayTimer = null;

    function updateView() {
      // Move explorer marker
      const pt = coords[currentStep];
      const explorer = document.getElementById('explorer');
      explorer.setAttribute('transform', `translate(${pt.x}, ${pt.y})`);

      // Update Path lines & Nodes
      document.getElementById('path1').style.opacity = currentStep >= 1 ? '1' : '0';
      document.getElementById('node1').style.opacity = currentStep >= 1 ? '1' : '0';

      document.getElementById('path2').style.opacity = currentStep >= 2 ? '1' : '0';
      document.getElementById('node2').style.opacity = currentStep >= 2 ? '1' : '0';

      document.getElementById('path3').style.opacity = currentStep >= 3 ? '1' : '0';
      document.getElementById('node3').style.opacity = currentStep >= 3 ? '1' : '0.3';

      // Update Tab Headers
      for (let i = 0; i <= 3; i++) {
        const tab = document.getElementById(`tab${i}`);
        tab.classList.remove('active', 'completed');
        if (i === currentStep) {
          tab.classList.add('active');
        } else if (i < currentStep) {
          tab.classList.add('completed');
        }
      }
    }

    function goToStep(step) {
      currentStep = step;
      updateView();
    }

    function nextStep() {
      if (currentStep < 3) {
        currentStep++;
      } else {
        currentStep = 0;
      }
      updateView();
    }

    function prevStep() {
      if (currentStep > 0) {
        currentStep--;
        updateView();
      }
    }

    function resetAnimation() {
      pause();
      currentStep = 0;
      updateView();
      setTimeout(play, 300);
    }

    function play() {
      const playBtn = document.getElementById('playBtn');
      playBtn.textContent = '⏸ Pause';
      if (autoPlayTimer) clearInterval(autoPlayTimer);
      autoPlayTimer = setInterval(() => {
        if (currentStep < 3) {
          currentStep++;
          updateView();
        } else {
          pause();
        }
      }, 1800);
    }

    function pause() {
      const playBtn = document.getElementById('playBtn');
      playBtn.textContent = '▶ Play';
      if (autoPlayTimer) {
        clearInterval(autoPlayTimer);
        autoPlayTimer = null;
      }
    }

    function togglePlay() {
      if (autoPlayTimer) {
        pause();
      } else {
        if (currentStep === 3) currentStep = 0;
        updateView();
        play();
      }
    }

    // Initialize
    updateView();
    // Auto-start demonstration on load after brief delay
    setTimeout(play, 800);
  </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="aspect-ratio" content="1:1">
  <style>
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
      user-select: none;
    }

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: #ffffff;
      color: #1e2945;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      min-height: 100%;
      padding: 12px 16px;
      overflow: hidden;
    }

    .compass-wrap {
      position: relative;
      width: 100%;
      max-width: 320px;
      aspect-ratio: 1 / 1;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: auto;
    }

    svg {
      width: 100%;
      height: 100%;
      display: block;
      overflow: visible;
    }

    .dial-ring {
      fill: #f8fafc;
      stroke: #e2e8f0;
      stroke-width: 2;
    }

    .tick {
      stroke: #cbd5e1;
      stroke-width: 1.5;
      stroke-linecap: round;
    }

    .tick-cardinal {
      stroke: #94a3b8;
      stroke-width: 2;
    }

    .needle-group {
      transform-origin: 160px 160px;
      transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    .dir-point {
      cursor: pointer;
      outline: none;
    }

    .hit-area {
      fill: transparent;
    }

    .point-bg {
      transition: r 0.25s ease, fill 0.25s ease, filter 0.25s ease;
    }

    .point-text {
      font-family: system-ui, sans-serif;
      font-weight: 700;
      text-anchor: middle;
      dominant-baseline: central;
      pointer-events: none;
      transition: fill 0.2s ease, font-size 0.2s ease;
    }

    /* Cardinal Points Styling */
    .cardinal .point-bg {
      fill: #ffffff;
      stroke: #2563eb;
      stroke-width: 2;
    }
    .cardinal .point-text {
      fill: #2563eb;
      font-size: 15px;
    }

    /* Intercardinal Points Styling */
    .intercardinal .point-bg {
      fill: #ffffff;
      stroke: #f97316;
      stroke-width: 2;
    }
    .intercardinal .point-text {
      fill: #f97316;
      font-size: 13px;
    }

    /* Active Highlight States */
    .dir-point.active.cardinal .point-bg {
      fill: #2563eb;
      stroke: #1d4ed8;
      filter: drop-shadow(0 0 6px rgba(37, 99, 235, 0.45));
      animation: pulse-blue 1.5s infinite alternate ease-in-out;
    }
    .dir-point.active.cardinal .point-text {
      fill: #ffffff;
    }

    .dir-point.active.intercardinal .point-bg {
      fill: #f97316;
      stroke: #ea580c;
      filter: drop-shadow(0 0 6px rgba(249, 115, 22, 0.45));
      animation: pulse-orange 1.5s infinite alternate ease-in-out;
    }
    .dir-point.active.intercardinal .point-text {
      fill: #ffffff;
    }

    @keyframes pulse-blue {
      0% { r: 17px; }
      100% { r: 19px; }
    }

    @keyframes pulse-orange {
      0% { r: 15px; }
      100% { r: 17px; }
    }

    /* Bottom Info Badge */
    .badge-container {
      width: 100%;
      display: flex;
      justify-content: center;
      padding-top: 8px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 9999px;
      font-size: 15px;
      font-weight: 700;
      border: 1.5px solid transparent;
      transition: all 0.25s ease;
    }

    .badge-cardinal {
      background: #eff6ff;
      color: #2563eb;
      border-color: #bfdbfe;
    }

    .badge-intercardinal {
      background: #fff7ed;
      color: #ea580c;
      border-color: #fed7aa;
    }
  </style>
</head>
<body>

  <div class="compass-wrap">
    <svg viewBox="0 0 320 320" aria-label="8-Point Compass Rose">
      
      <circle cx="160" cy="160" r="146" class="dial-ring" />
      <circle cx="160" cy="160" r="110" fill="none" stroke="#e2e8f0" stroke-width="1.5" stroke-dasharray="2 3" />
      <circle cx="160" cy="160" r="70" fill="#ffffff" stroke="#f1f5f9" stroke-width="2" />

      
      
      <line x1="160" y1="18" x2="160" y2="28" class="tick-cardinal" />
      <line x1="160" y1="292" x2="160" y2="302" class="tick-cardinal" />
      <line x1="18" y1="160" x2="28" y2="160" class="tick-cardinal" />
      <line x1="292" y1="160" x2="302" y2="160" class="tick-cardinal" />
      
      <line x1="59.6" y1="59.6" x2="66.6" y2="66.6" class="tick" />
      <line x1="260.4" y1="59.6" x2="253.4" y2="66.6" class="tick" />
      <line x1="59.6" y1="260.4" x2="66.6" y2="253.4" class="tick" />
      <line x1="260.4" y1="260.4" x2="253.4" y2="253.4" class="tick" />

      
      <polygon points="160,82 165,155 160,160" fill="#93c5fd" />
      <polygon points="160,82 155,155 160,160" fill="#3b82f6" />
      <polygon points="160,238 165,165 160,160" fill="#cbd5e1" />
      <polygon points="160,238 155,165 160,160" fill="#94a3b8" />
      <polygon points="238,160 165,165 160,160" fill="#cbd5e1" />
      <polygon points="238,160 165,155 160,160" fill="#94a3b8" />
      <polygon points="82,160 155,165 160,160" fill="#cbd5e1" />
      <polygon points="82,160 155,155 160,160" fill="#94a3b8" />

      <polygon points="215,105 165,157 160,160" fill="#fed7aa" />
      <polygon points="215,105 157,165 160,160" fill="#f97316" />
      <polygon points="215,215 165,163 160,160" fill="#fed7aa" />
      <polygon points="215,215 163,165 160,160" fill="#f97316" />
      <polygon points="105,215 155,163 160,160" fill="#fed7aa" />
      <polygon points="105,215 163,155 160,160" fill="#f97316" />
      <polygon points="105,105 155,157 160,160" fill="#fed7aa" />
      <polygon points="105,105 157,155 160,160" fill="#f97316" />

      
      <g id="needleGroup" class="needle-group">
        <polygon points="160,60 166,160 154,160" fill="#2563eb" opacity="0.95" />
        <polygon points="160,215 165,160 155,160" fill="#cbd5e1" opacity="0.9" />
        <circle cx="160" cy="160" r="7" fill="#1e2945" />
        <circle cx="160" cy="160" r="3" fill="#ffffff" />
      </g>

      
      
      <g class="dir-point cardinal active" id="pt-N" data-dir="N" data-name="North" data-angle="0" data-type="cardinal" role="button" tabindex="0">
        <circle cx="160" cy="32" r="28" class="hit-area" />
        <circle cx="160" cy="32" r="17" class="point-bg" />
        <text x="160" y="32" class="point-text">N</text>
      </g>

      
      <g class="dir-point intercardinal" id="pt-NE" data-dir="NE" data-name="Northeast" data-angle="45" data-type="intercardinal" role="button" tabindex="0">
        <circle cx="250" cy="70" r="26" class="hit-area" />
        <circle cx="250" cy="70" r="15" class="point-bg" />
        <text x="250" y="70" class="point-text">NE</text>
      </g>

      
      <g class="dir-point cardinal" id="pt-E" data-dir="E" data-name="East" data-angle="90" data-type="cardinal" role="button" tabindex="0">
        <circle cx="288" cy="160" r="28" class="hit-area" />
        <circle cx="288" cy="160" r="17" class="point-bg" />
        <text x="288" y="160" class="point-text">E</text>
      </g>

      
      <g class="dir-point intercardinal" id="pt-SE" data-dir="SE" data-name="Southeast" data-angle="135" data-type="intercardinal" role="button" tabindex="0">
        <circle cx="250" cy="250" r="26" class="hit-area" />
        <circle cx="250" cy="250" r="15" class="point-bg" />
        <text x="250" y="250" class="point-text">SE</text>
      </g>

      
      <g class="dir-point cardinal" id="pt-S" data-dir="S" data-name="South" data-angle="180" data-type="cardinal" role="button" tabindex="0">
        <circle cx="160" cy="288" r="28" class="hit-area" />
        <circle cx="160" cy="288" r="17" class="point-bg" />
        <text x="160" y="288" class="point-text">S</text>
      </g>

      
      <g class="dir-point intercardinal" id="pt-SW" data-dir="SW" data-name="Southwest" data-angle="225" data-type="intercardinal" role="button" tabindex="0">
        <circle cx="70" cy="250" r="26" class="hit-area" />
        <circle cx="70" cy="250" r="15" class="point-bg" />
        <text x="70" y="250" class="point-text">SW</text>
      </g>

      
      <g class="dir-point cardinal" id="pt-W" data-dir="W" data-name="West" data-angle="270" data-type="cardinal" role="button" tabindex="0">
        <circle cx="32" cy="160" r="28" class="hit-area" />
        <circle cx="32" cy="160" r="17" class="point-bg" />
        <text x="32" y="160" class="point-text">W</text>
      </g>

      
      <g class="dir-point intercardinal" id="pt-NW" data-dir="NW" data-name="Northwest" data-angle="315" data-type="intercardinal" role="button" tabindex="0">
        <circle cx="70" cy="70" r="26" class="hit-area" />
        <circle cx="70" cy="70" r="15" class="point-bg" />
        <text x="70" y="70" class="point-text">NW</text>
      </g>
    </svg>
  </div>

  
  <div class="badge-container">
    <div id="badge" class="badge badge-cardinal">
      <span id="badgeText">N = North</span>
    </div>
  </div>

  <script>
    const points = document.querySelectorAll('.dir-point');
    const needle = document.getElementById('needleGroup');
    const badge = document.getElementById('badge');
    const badgeText = document.getElementById('badgeText');

    let currentAngle = 0;

    function selectDirection(point) {
      points.forEach(p => p.classList.remove('active'));
      point.classList.add('active');

      const targetAngle = parseInt(point.getAttribute('data-angle'), 10);
      const code = point.getAttribute('data-dir');
      const name = point.getAttribute('data-name');
      const type = point.getAttribute('data-type');

      // Calculate shortest rotation path
      let diff = (targetAngle - currentAngle) % 360;
      if (diff < -180) diff += 360;
      if (diff > 180) diff -= 360;
      currentAngle += diff;

      needle.style.transform = `rotate(${currentAngle}deg)`;

      // Update badge text and theme
      badgeText.textContent = `${code} = ${name}`;
      if (type === 'cardinal') {
        badge.className = 'badge badge-cardinal';
      } else {
        badge.className = 'badge badge-intercardinal';
      }
    }

    points.forEach(point => {
      point.addEventListener('click', () => selectDirection(point));
      point.addEventListener('keydown', (e) => {
        if (e.key === 'Enter' || e.key === ' ') {
          e.preventDefault();
          selectDirection(point);
        }
      });
    });
  </script>
</body>
</html>

OGM.6.SP.3

Aligned learning resources

Related diagrams