/* Minimal layout styles based on original - preserved look & feel */
.calculator-container {
    display: flex;
    min-height: 100vh;
    background: #f7f9fc;
    color: #222;
}

.sidebar {
    width: 300px;
    background: linear-gradient(135deg, #2c3e50, #1a2530);
    color: #fff;
    padding: 18px 12px;
    overflow: auto;
}

.search-container input {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: none;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.category {
    margin-top: 14px;
}

.category-title {
    padding: 10px;
    background: rgba(0, 0, 0, 0.18);
    font-weight: 600;
}

.calculator-list {
    list-style: none;
    padding-left: 12px;
    margin-top: 8px;
}

.calculator-list li {
    padding: 8px 6px;
    cursor: pointer;
    opacity: .95;
    transition: transform 0.2s, color 0.2s;
}

.calculator-list li:hover {
    transform: translateX(6px);
    color: #4dc0ff;
}

.calculator-list li.active {
    color: #4dc0ff;
    font-weight: 700;
}

.main-content {
    flex: 1;
    padding: 26px;
    overflow: auto;
}

.calculator-card {
    background: #fff;
    border-radius: 10px;
    padding: 22px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
}

.calculator-title {
    font-size: 22px;
    color: #243142;
    margin-bottom: 12px;
}

.input-group {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.input-group label {
    width: 150px;
    font-weight: 600;
    color: #243142;
}

.input-group input,
.input-group select {
    padding: 8px;
    border-radius: 6px;
    border: 1px solid #ddd;
    width: 220px;
}

.unit-selector {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.unit-option {
    padding: 8px 12px;
    border-radius: 6px;
    background: #f1f5f9;
    cursor: pointer;
}

.unit-option.active {
    background: #3498db;
    color: #fff;
}

.result-container {
    margin-top: 14px;
    padding: 14px;
    border-radius: 8px;
    background: #f8f9fa;
    border-left: 4px solid #3498db;
}

.result-title {
    font-weight: 700;
    color: #243142;
    margin-bottom: 8px;
}

.result-value {
    margin: 6px 0;
    font-weight: 700;
    color: #243142;
}

.formula-info {
    margin-top: 10px;
    font-style: italic;
    color: #666;
    font-size: 13px;
}

table.unit-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

table.unit-table th,
table.unit-table td {
    border: 1px solid #e2e8f0;
    padding: 8px;
    text-align: left;
    font-size: 14px;
}

table.unit-table th {
    background: #f1f5f9;
    font-weight: 700;
}

@media (max-width: 768px) {
    .calculator-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        max-height: 180px;
    }

    .input-group label {
        width: 100%;
    }

    .input-group input,
    .input-group select {
        width: 100%;
    }
}