.error-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    max-width: 520px;
    width: 100%;
    margin: auto; /* Works alongside layout flex to keep perfectly centered */
    animation: fadeIn 0.4s ease-out;
}

/* Technical SVG Frame Handling */
.error-visual {
    width: 160px;
    height: 160px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 25px rgba(0, 150, 199, 0.25));
}

/* Typography Hierarchy */
.error-code {
    font-family: 'Poppins', sans-serif;
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1;
    color: var(--brand-blue);
    letter-spacing: -1px;
    margin: 0 0 0.5rem 0;
    text-shadow: 0 0 20px rgba(0, 150, 199, 0.2);
}

.error-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.75rem;
    letter-spacing: -0.2px;
}

.error-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--payoff-color);
    opacity: 0.75;
    margin-bottom: 2rem;
}

/* Control Actions styled precisely to match your existing brand colors */
.btn-return {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: rgba(0, 150, 199, 0.08);
    color: var(--text-white);
    border: 1px solid rgba(0, 150, 199, 0.4);
    padding: 12px 28px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s ease;
}

    .btn-return:hover {
        background-color: var(--brand-blue);
        border-color: var(--hover-blue);
        transform: translateY(-1px);
        box-shadow: 0 4px 20px rgba(0, 150, 199, 0.3);
    }

.icon-left {
    width: 16px;
    height: 16px;
    transition: transform 0.25s ease;
}

.btn-return:hover .icon-left {
    transform: translateX(-3px);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}