.error-page {
    max-width: 600px;
    margin: 5% auto;
    text-align: center;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: #fff;
    background: linear-gradient(135deg, #1f1c2c, #928dab);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.4);
    animation: fadeIn 1s ease-in-out;
}

.error-page h1 {
    font-size: 2em;
    margin-bottom: 20px;
}

.error-page p {
    font-size: 1.2em;
    margin-bottom: 30px;
}

.error-code {
    font-size: 6em;
    font-weight: bold;
    color: #ff4f81;
    text-shadow: 2px 2px 8px rgba(255, 79, 129, 0.8);
    margin-bottom: 10px;
}

.error-page .btn {
    background-color: #ff4f81;
    color: #fff;
    padding: 10px 20px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease;
    box-shadow: 0 0 10px rgba(255, 79, 129, 0.5);
}

.error-page .btn:hover {
    background-color: #e84370;
    text-decoration: none;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}