body {
    background-color: #f4f6f9;
    font-family: "Source Sans Pro", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-box {
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    padding: 50px 40px;
    max-width: 560px;
    width: 100%;
    text-align: center;
}

.error-icon {
    font-size: 72px;
    color: #dd4b39;
    margin-bottom: 20px;
}

.error-code {
    font-size: 18px;
    font-weight: 700;
    color: #dd4b39;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.error-title {
    font-size: 26px;
    font-weight: 700;
    color: #333333;
    margin-bottom: 16px;
}

.error-message {
    font-size: 15px;
    color: #666666;
    line-height: 1.7;
    margin-bottom: 30px;
}

.error-ref {
    font-size: 13px;
    color: #999999;
    margin-bottom: 28px;
}

.btn-home {
    background-color: #3c8dbc;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    padding: 10px 28px;
    font-size: 15px;
    text-decoration: none;
    display: inline-block;
    margin-right: 8px;
}

.btn-home:hover {
    background-color: #367fa9;
    color: #ffffff;
    text-decoration: none;
}

.btn-home-secondary {
    background-color: #6c757d;
}

.footer-note {
    margin-top: 36px;
    font-size: 12px;
    color: #bbbbbb;
    border-top: 1px solid #eeeeee;
    padding-top: 16px;
}