/* Specific 404 Error Styles */
body {
    display: flex;
    flex-direction: column;
    align-items: center; 
    justify-content: center; /* Centers vertically for 404 */
    min-height: 100vh;
    margin: 0;
}

.error-card {
    width: 100%;
    padding: 40px 20px;
    text-align: center;
    margin-top: 10px;
}

.error-code {
    font-size: 5rem;
    font-weight: 800;
    margin: 0;
    color: white;
    letter-spacing: -2px;
}

.return-btn {
    display: inline-block;
    margin-top: 25px;
    padding: 15px 40px;
    background: var(--accent, #1e768a);
    color: white !important;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 800;
    transition: 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.return-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 25px rgba(30, 118, 138, 0.4);
    filter: brightness(1.1);
}