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Update HTML for 3D Earth animation and styling #909

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Update HTML for 3D Earth animation and styling #909

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130 changes: 72 additions & 58 deletions 3D Earth/index.html
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Original file line number Diff line number Diff line change
@@ -1,71 +1,85 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Animated 3D Earth</title>
<style>
body {
margin: 0;
height: 100vh;
display: flex;
justify-content: center;
align-items: center;
background-color: #000;
overflow: hidden;
perspective: 1000px;
}
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CSS Realistic 3D Earth Illusion</title>
<style>
body {
margin: 0;
height: 100vh;
display: flex;
justify-content: center;
align-items: center;
background: radial-gradient(circle at center, #000015 0%, #000 80%);
overflow: hidden;
}

.scene {
width: 300px;
height: 300px;
position: relative;
}
.scene {
width: 300px;
height: 300px;
position: relative;
transform: rotateX(18deg) rotateZ(-8deg);
}

.globe {
width: 100%;
height: 100%;
border-radius: 50%;
position: absolute;
transform-style: preserve-3d;
background: url('https://eoimages.gsfc.nasa.gov/images/imagerecords/57000/57735/land_ocean_ice_cloud_2048.jpg');
background-size: 200% 150%;
animation: spin 20s linear infinite;
box-shadow:
inset 30px 0 80px rgba(0, 0, 0, 0.8),
inset -30px 0 40px rgba(255, 255, 255, 0.2),
0 0 40px rgba(168, 219, 255, 0.4);
}
.globe {
width: 100%;
height: 100%;
border-radius: 50%;
position: relative;
background-image: url('https://eoimages.gsfc.nasa.gov/images/imagerecords/57000/57735/land_ocean_ice_cloud_2048.jpg');
background-size: 220% 100%;
background-position: 0 0;
background-repeat: repeat-x;
animation: spin 25s linear infinite;
box-shadow:
inset -40px 0 60px rgba(0, 0, 0, 0.9),
inset 40px 0 60px rgba(255, 255, 255, 0.2),
0 0 30px rgba(90,150,255,0.5);
overflow: hidden;
}

.globe::after {
content: "";
position: absolute;
inset: 0;
border-radius: 50%;
background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.3), rgba(0,0,0,0.7) 70%);
mix-blend-mode: overlay;
}
/* Central highlight (curvature illusion) */
.globe::before {
content: "";
position: absolute;
inset: 0;
border-radius: 50%;
background: radial-gradient(circle at 35% 35%, rgba(255,255,255,0.45) 0%, rgba(255,255,255,0.1) 35%, rgba(0,0,0,0.9) 100%);
mix-blend-mode: overlay;
}

@keyframes spin {
0% { background-position: 0 0; }
100% { background-position: -200% 0; }
}
/* Limb darkening (edge shadow for roundness) */
.globe::after {
content: "";
position: absolute;
inset: 0;
border-radius: 50%;
background: radial-gradient(circle at 50% 50%, rgba(0,0,0,0) 60%, rgba(0,0,0,0.9) 100%);
}

@keyframes dayNightCycle {
0% { background-position: 0 0; }
100% { background-position: 100% 100%; }
}
/* Simulated atmospheric glow */
.atmosphere {
position: absolute;
inset: -12px;
border-radius: 50%;
background: radial-gradient(circle, rgba(120,190,255,0.45), transparent 70%);
filter: blur(12px);
z-index: -1;
}

@keyframes shadowMovement {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
</style>
/* Gentle "axis wobble" to break flatness */
@keyframes spin {
0% { background-position: 0 0; transform: rotateY(0deg) rotateX(10deg); }
50% { background-position: -100% 0; transform: rotateY(10deg) rotateX(15deg); }
100% { background-position: -200% 0; transform: rotateY(0deg) rotateX(10deg); }
}
</style>
</head>
<body>
<div class="scene">
<div class="globe"></div>
</div>
<div class="scene">
<div class="globe"></div>
<div class="atmosphere"></div>
</div>
</body>
</html>