/* Interactive Construction Calculator CSS */
.vnspo-calc-container {
    background: linear-gradient(145deg, #0f172a 0%, #1e293b 100%);
    color: #f1f5f9;
    border-radius: 16px;
    padding: 28px 24px;
    margin: 32px auto;
    max-width: 900px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    border: 1px solid #334155;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    box-sizing: border-box;
}

.vnspo-calc-header {
    text-align: center;
    margin-bottom: 24px;
    border-bottom: 1px solid #334155;
    padding-bottom: 16px;
}

.vnspo-calc-badge {
    display: inline-block;
    background: rgba(56, 189, 248, 0.15);
    color: #38bdf8;
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.vnspo-calc-title {
    font-size: 22px;
    font-weight: 700;
    color: #ffffff;
    margin: 4px 0 8px 0;
}

.vnspo-calc-subtitle {
    font-size: 13px;
    color: #94a3b8;
    margin: 0;
}

.vnspo-calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    align-items: start;
}

.vnspo-calc-field {
    margin-bottom: 20px;
}

.vnspo-calc-field label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #e2e8f0;
    margin-bottom: 8px;
}

.vnspo-calc-select {
    width: 100%;
    padding: 12px 14px;
    background-color: #0f172a;
    border: 1px solid #475569;
    border-radius: 8px;
    color: #ffffff;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.vnspo-calc-select:focus {
    border-color: #38bdf8;
}

.vnspo-calc-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.vnspo-calc-area-val {
    color: #38bdf8;
    font-size: 14px;
}

.vnspo-calc-slider {
    width: 100%;
    margin: 12px 0 8px 0;
    accent-color: #38bdf8;
    cursor: pointer;
}

.vnspo-calc-number-input {
    width: 100%;
    padding: 10px 14px;
    background-color: #0f172a;
    border: 1px solid #475569;
    border-radius: 8px;
    color: #ffffff;
    font-size: 14px;
    box-sizing: border-box;
}

.vnspo-calc-checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 13px;
    color: #cbd5e1;
    font-weight: normal;
}

.vnspo-calc-checkbox-label input {
    accent-color: #38bdf8;
    width: 18px;
    height: 18px;
}

.vnspo-calc-result-card {
    background: #09101d;
    border: 1px solid #1e293b;
    border-radius: 12px;
    padding: 20px;
}

.vnspo-calc-res-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 13px;
}

.vnspo-calc-res-label {
    color: #94a3b8;
}

.vnspo-calc-res-highlight {
    color: #e2e8f0;
    text-align: right;
    max-width: 60%;
}

.vnspo-calc-badge-warranty {
    background: #065f46;
    color: #34d399;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
}

.vnspo-calc-divider {
    border: 0;
    border-top: 1px solid #334155;
    margin: 14px 0;
}

.vnspo-calc-res-total {
    margin-bottom: 8px;
}

.vnspo-calc-price-tag {
    font-size: 22px;
    color: #38bdf8;
    font-weight: 800;
}

.vnspo-calc-note {
    font-size: 11px;
    color: #64748b;
    font-style: italic;
    margin: 10px 0 16px 0;
    line-height: 1.4;
}

.vnspo-calc-cta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.vnspo-calc-btn-primary, .vnspo-calc-btn-secondary {
    display: block;
    text-align: center;
    padding: 10px 12px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.vnspo-calc-btn-primary {
    background: #0284c7;
    color: #ffffff;
}

.vnspo-calc-btn-primary:hover {
    background: #0369a1;
}

.vnspo-calc-btn-secondary {
    background: #334155;
    color: #f1f5f9;
}

.vnspo-calc-btn-secondary:hover {
    background: #475569;
}

@media (max-width: 640px) {
    .vnspo-calc-grid {
        grid-template-columns: 1fr;
    }
    .vnspo-calc-cta {
        grid-template-columns: 1fr;
    }
}