.data-check-widget {
    margin: 1.5rem 0;
    padding: 1.2rem;
    border-radius: 24px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.08);
}

.dc-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.dc-tab {
    border: 1px solid #cbd5e1;
    background: white;
    color: #334155;
    border-radius: 999px;
    padding: 0.55rem 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.dc-tab:hover,
.dc-tab.active {
    background: #0f172a;
    color: white;
    border-color: #0f172a;
}

.dc-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    align-items: stretch;
}

.dc-input-area,
.dc-options,
.dc-result-card,
.dc-step-card,
.dc-note-box {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 18px;
    padding: 1rem;
}

.dc-input-area {
    display: grid;
    gap: 0.65rem;
}

.dc-input-area label,
.dc-options label {
    font-weight: 800;
    color: #334155;
}

.dc-input-area input,
.dc-options select {
    width: 100%;
    box-sizing: border-box;
    padding: 0.75rem 0.85rem;
    border-radius: 14px;
    border: 1px solid #cbd5e1;
    font-size: 1rem;
}

.dc-input-area button {
    width: fit-content;
    padding: 0.65rem 1rem;
    border: none;
    border-radius: 999px;
    background: #5b5fa8;
    color: white;
    font-weight: 800;
    cursor: pointer;
}

.dc-result-card {
    grid-column: span 2;
    border-left: 6px solid #5b5fa8;
}

.dc-result-card.success {
    border-left-color: #16a34a;
}

.dc-result-card.warning {
    border-left-color: #ea580c;
}

.dc-result-card.error {
    border-left-color: #dc2626;
}

.dc-result-label {
    display: inline-block;
    color: #64748b;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 800;
}

.dc-result-card strong {
    display: block;
    margin-top: 0.25rem;
    color: #0f172a;
    font-size: 1.25rem;
}

.dc-result-card p {
    margin-bottom: 0;
}

.dc-visual-area {
    margin-top: 1rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.dc-step-card h3 {
    margin-top: 0;
    color: #34387f;
}

.dc-bit-display {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    min-height: 3.2rem;
}

.dc-bit {
    min-width: 2.3rem;
    min-height: 2.3rem;
    padding: 0.25rem;
    border-radius: 12px;
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    color: #1e3a8a;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.08);
}

.dc-bit.parity {
    background: #fff7ed;
    border-color: #fed7aa;
    color: #7c2d12;
}

.dc-note-box {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: #14532d;
    font-weight: 650;
}

@media (max-width: 760px) {
    .dc-panel {
        grid-template-columns: 1fr;
    }

    .dc-result-card {
        grid-column: span 1;
    }
}