body {
    background: #0f172a;
    color: #e2e8f0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.centered {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
}

.card-404 {
    text-align: center;
    max-width: 500px;
}

.number {
    font-size: 100px;
    font-weight: 700;
    color: #6366f1;
    margin-bottom: 10px;
    letter-spacing: -2px;
}

h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

p {
    color: #94a3b8;
    line-height: 1.6;
    margin-bottom: 30px;
}

.actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.btn-primary {
    background: #6366f1;
    color: white;
    padding: 10px 18px;
    border-radius: 8px;
    text-decoration: none;
    transition: 0.2s;
    font-weight: 500;
}

.btn-primary:hover {
    background: #4f46e5;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    border: 1px solid #334155;
    color: #e2e8f0;
    padding: 10px 18px;
    border-radius: 8px;
    text-decoration: none;
    transition: 0.2s;
}

.btn-secondary:hover {
    border-color: #6366f1;
    color: #6366f1;
}