* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #0f172a;
    color: #f8fafc;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 1rem;
    text-align: center;
}
.error-container {
    max-width: 600px;
    width: 100%;
    margin: auto;
    background-color: #1e293b;
    border: 1px solid #334155;
    padding: 2.5rem 2rem;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
}
.error-code {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1;
    color: #ea580c;
    margin-bottom: 1rem;
    letter-spacing: -2px;
}
.error-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 1rem;
}
.error-message {
    font-size: 1rem;
    line-height: 1.6;
    color: #94a3b8;
    margin-bottom: 1.5rem;
}
.error-divider {
    height: 1px;
    background-color: #334155;
    margin: 1.5rem 0;
}
.error-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}
.btn {
    display: inline-block;
    padding: 0.6rem 1.25rem;
    background-color: #ea580c;
    color: #ffffff;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid #ea580c;
    transition: background-color 0.2s ease;
}
.btn:hover {
    background-color: #c2410c;
}
.footer-info {
    font-size: 0.85rem;
    color: #64748b;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.badge-node {
    display: inline-block;
    background-color: #0f172a;
    border: 1px solid #475569;
    color: #cbd5e1;
    padding: 0.25rem 0.6rem;
    font-family: monospace;
    font-size: 0.8rem;
    font-weight: 600;
}