body {
    margin: 0;
    padding: 0;
    font-family: "Inter", Arial, sans-serif;
    background: #f5f5f7;
    color: #333;
    display: flex;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
}

.error-container {
    text-align: center;
    max-width: 600px;
    padding: 40px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    animation: fadeIn 0.5s ease;
}

.error-code {
    font-size: 80px;
    font-weight: 700;
    color: #ff6600;
    margin: 0;
}

.error-title {
    font-size: 28px;
    margin-top: 10px;
}

.error-description {
    font-size: 18px;
    margin-top: 10px;
    opacity: 0.7;
}

.tech-details {
    margin-top: 25px;
    padding: 15px;
    font-size: 14px;
    background: #f0f0f0;
    border-radius: 10px;
    text-align: left;
    color: #444;
}

a.btn {
    display: inline-block;
    margin-top: 25px;
    padding: 12px 24px;
    font-size: 16px;
    background: #ff6600;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    transition: 0.2s;
}

a.btn:hover {
    background: #ff3b00;
}

@media (max-width: 480px) {
    .error-code { font-size: 60px; }
    .error-title { font-size: 22px; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to   { opacity: 1; transform: translateY(0); }
}