* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

.stars {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.star {
    position: absolute;
    background-color: #fff;
    width: 2px;
    height: 2px;
    border-radius: 50%;
    opacity: 0;
    animation: twinkle 4s infinite;
}

@keyframes twinkle {
    0% { opacity: 0; }
    50% { opacity: 1; }
    100% { opacity: 0; }
}

.error-container {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    padding: 40px;
    text-align: center;
    z-index: 10;
    width: 90%;
    max-width: 600px;
    transform: translateY(20px);
    opacity: 0;
    animation: fadeIn 1s forwards 0.5s;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.error-code {
    font-size: 120px;
    font-weight: 700;
    color: #0066cc;
    margin-bottom: 20px;
    position: relative;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.error-code:after {
    content: "";
    position: absolute;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, transparent, #0066cc, transparent);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

.error-message {
    font-size: 24px;
    color: #444;
    margin-bottom: 30px;
}

.error-description {
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

.home-button {
    display: inline-block;
    background-color: #0066cc;
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.home-button:hover {
    background-color: #0055aa;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
}

.home-button:active {
    transform: translateY(1px);
}

.orbiting-circle {
    position: absolute;
    width: 200px;
    height: 200px;
    border: 2px solid rgba(0, 102, 204, 0.3);
    border-radius: 50%;
    animation: rotate 15s linear infinite;
}

.planet {
    position: absolute;
    width: 30px;
    height: 30px;
    background-color: #0066cc;
    border-radius: 50%;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 20px rgba(0, 102, 204, 0.6);
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.space-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
    z-index: -1;
}