/* Calculator UI Components */

/* Tabs Interface */
.calc-tabs {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
    overflow-x: auto;
    scrollbar-width: none;
    /* Hide scrollbar Firefox */
}

.calc-tabs::-webkit-scrollbar {
    display: none;
    /* Hide scrollbar Chrome/Safari */
}

.calc-tab-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--color-text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    font-family: var(--font-heading);
    font-size: 0.95rem;
}

.calc-tab-btn:hover {
    color: var(--color-accent);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.calc-tab-btn.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.calc-tab-content {
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.calc-tab-content.active {
    display: block;
}

/* Data Tables */
.data-table-container {
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    min-width: 600px;
}

.data-table th,
.data-table td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.data-table th {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    font-weight: 600;
    position: sticky;
    top: 0;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:hover {
    background: var(--color-bg-tertiary);
}

.table-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-icon {
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border);
}

.btn-delete {
    color: #ef4444;
}

.btn-delete:hover {
    background: #fee2e2;
    border-color: #fecaca;
}

/* Add Item Form */
.add-item-form {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    border: 1px solid var(--color-border);
}

.add-item-header {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-row {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-group {
    flex: 1;
    min-width: 150px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* Labels & Status */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.success {
    background: #d1fae5;
    color: #059669;
}

.status-badge.warning {
    background: #fef3c7;
    color: #d97706;
}

/* Split View for Desktop */
@media (min-width: 1024px) {
    .calc-split-view {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
        align-items: start;
    }

    .calc-visualization-panel {
        position: sticky;
        top: 100px;
        /* Header height + spacing */
        background: var(--color-bg-secondary);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-sm);
    }

    .calc-input-panel {
        min-width: 0;
        /* Prevent grid blowout */
    }
}