/* ============================================================================
   BUILDER RESPONSIVE - TABLET & MOBILE
   ============================================================================ */

/* Tablet (768px - 1023px): Side-by-side with smaller schematic */
@media (min-width: 768px) and (max-width: 1023px) {
    .builder-layout {
        display: flex;
        flex-direction: row;
        gap: 1.5rem;
    }

    .parts-list-column {
        flex: 1;
        min-width: 0;
    }

    .schematic-column {
        width: 260px;
        flex-shrink: 0;
    }

    .pc-schematic-wrapper {
        position: sticky;
        top: 80px;
    }

    .pc-schematic__svg {
        max-width: 100%;
        height: auto;
    }

    /* Smaller parts on tablet */
    .part-row {
        padding: 0.75rem 1rem;
    }

    .part-row__type {
        min-width: 80px;
    }
}

/* Mobile (< 768px): Stacked with schematic on top */
@media (max-width: 767px) {
    .builder-layout {
        display: flex;
        flex-direction: column-reverse;
        gap: 1.5rem;
    }

    .schematic-column {
        width: 100%;
        max-width: 280px;
        margin: 0 auto;
    }

    .pc-schematic-wrapper {
        position: relative;
    }

    .pc-schematic__svg {
        max-width: 100%;
        height: auto;
    }

    .parts-list-column {
        width: 100%;
    }

    /* Compact parts list on mobile */
    .parts-list {
        border-radius: 8px;
    }

    .parts-list__header {
        padding: 1rem;
    }

    .parts-list__body {
        padding: 0.5rem;
    }

    /* Footer styles handled in _modals-panels.css */

    /* ========================================================
       Part Rows - Mobile Layout (< 768px)
       Grid: header + add-area on row 1, items on row 2
       ======================================================== */

    .part-row {
        display: grid;
        grid-template-columns: 1fr auto;
        grid-template-rows: auto auto auto;
        gap: 0.5rem;
        padding: 0;
        border-bottom: 1px solid var(--border);
        background: transparent;
    }

    .part-row:last-child {
        border-bottom: none;
    }

    /* Row 1, Column 1: Header with icon, label */
    .part-row__header {
        display: flex;
        align-items: center;
        justify-content: flex-start;
        padding: 0.75rem;
        background: transparent;
        border-bottom: none;
        gap: 0.5rem;
        grid-column: 1;
        grid-row: 1;
    }

    .part-row__type {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        flex: 1;
        min-width: 0;
    }

    .part-row__icon {
        width: 18px;
        height: 18px;
        flex-shrink: 0;
        color: var(--text-secondary);
    }

    .part-row__label {
        font-size: 0.8125rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.02em;
        color: var(--text-secondary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        flex: 1;
    }

    /* Row 1, Column 2: Add button */
    .part-row__add-area {
        display: flex;
        align-items: center;
        gap: 0.25rem;
        flex-shrink: 0;
        grid-column: 2;
        grid-row: 1;
        padding: 0.75rem;
    }

    .part-row__add-btn {
        display: inline-flex;
        align-items: center;
        gap: 0.375rem;
        padding: 0.5rem 0.75rem;
        font-size: 0.75rem;
        background: var(--accent);
        color: #000;
        border: none;
        border-radius: 4px;
        cursor: pointer;
        transition: all 0.15s ease;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .part-row__add-btn:active {
        background: var(--accent-hover);
        transform: scale(0.98);
    }

    .part-row__add-btn svg {
        width: 14px;
        height: 14px;
        flex-shrink: 0;
    }

    /* Always show text on mobile */
    .part-row__add-btn .part-row__add-text {
        display: inline;
    }

    /* Slot indicator: inline next to label on mobile */
    .part-row__slot-indicator {
        display: none; /* Hidden, badge will be used instead */
    }

    /* Row 2: Items container - spans full width */
    .part-row__items {
        padding: 0.5rem;
        position: relative;
        min-width: 0;
        grid-column: 1 / -1;
        grid-row: 2;
    }

    /* Slot badge: inline on mobile (for multi items) */
    .part-row__slot-badge {
        position: static;
        display: none;
        font-size: 0.625rem;
        font-weight: 500;
        color: var(--text-muted);
        background: transparent;
        border: 1px solid var(--border);
        padding: 0.25rem 0.5rem;
        border-radius: 3px;
        white-space: nowrap;
        margin-bottom: 0.5rem;
        width: fit-content;
    }

    /* Show badge only for multi items on mobile */
    .part-row--multi .part-row__slot-badge {
        display: block;
    }

    /* Empty state */
    .part-row__empty {
        color: var(--text-muted);
        font-style: italic;
        font-size: 0.75rem;
        padding: 1rem 0.5rem;
        text-align: center;
    }

    /* Single item: horizontal flex inside items area */
    .part-row__item {
        display: flex;
        align-items: flex-start;
        gap: 0.5rem;
        padding: 0;
        background: transparent;
        border-bottom: none;
    }

    /* Multi items: each item in a card */
    .part-row--multi .part-row__items-list {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .part-row--multi .part-row__item {
        padding: 0.5rem;
        background: transparent;
        border: 1px solid var(--border);
        border-radius: 6px;
        gap: 0.5rem;
    }

    /* Thumbnail sizing */
    .part-row__thumb-container {
        flex-shrink: 0;
        width: 40px;
        height: 40px;
        min-width: 40px;
    }

    .part-row__thumb {
        width: 40px;
        height: 40px;
        object-fit: contain;
        border-radius: 4px;
        background: transparent;
    }

    /* Product info: flex-grow to fill available space */
    .part-row__product-info {
        flex: 1;
        min-width: 0;
        display: flex;
        flex-direction: column;
        gap: 0.125rem;
    }

    .part-row__product-header {
        display: flex;
        align-items: center;
        gap: 0.375rem;
        flex-wrap: wrap;
    }

    .part-row__quantity {
        font-weight: 600;
        color: var(--accent);
        font-size: 0.75rem;
        flex-shrink: 0;
    }

    .part-row__product-name {
        font-size: 0.8125rem;
        font-weight: 500;
        color: var(--text-primary);
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        line-height: 1.3;
    }

    .part-row__product-specs {
        font-size: 0.7rem;
        color: var(--text-muted);
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    /* Price: always visible on mobile (inside item or standalone) */
    .part-row__price-container {
        display: flex;
        align-items: center;
        gap: 0.375rem;
        flex-shrink: 0;
    }

    .part-row__price {
        font-size: 0.875rem;
        font-weight: 700;
        color: var(--accent);
        white-space: nowrap;
    }

    .part-row__stock {
        display: inline;
        font-size: 0.625rem;
        padding: 0.125rem 0.375rem;
        border-radius: 3px;
        white-space: nowrap;
    }

    .part-row__stock--available {
        background: rgba(34, 197, 94, 0.1);
        color: var(--success);
    }

    .part-row__stock--unavailable {
        background: rgba(239, 68, 68, 0.1);
        color: var(--error);
    }

    /* Actions: always visible, right-aligned */
    .part-row__actions {
        display: flex;
        gap: 0.25rem;
        flex-shrink: 0;
        align-self: flex-start;
        margin-top: 0.125rem;
    }

    .part-row__action-btn {
        width: 28px;
        height: 28px;
        min-width: 28px;
        padding: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background: transparent;
        border: 1px solid var(--border);
        border-radius: 4px;
        color: var(--text-muted);
        cursor: pointer;
        transition: all 0.15s ease;
    }

    .part-row__action-btn:active {
        background: var(--bg-tertiary);
        border-color: var(--border);
        color: var(--text-primary);
        transform: scale(0.96);
    }

    .part-row__action-btn--remove:active {
        border-color: var(--error);
        color: var(--error);
    }

    .part-row__action-btn svg {
        width: 14px;
        height: 14px;
    }

    /* Price column: show on mobile for single-item types (actions needed) */
    .part-row__price-column {
        display: flex;
        grid-column: 1 / -1;
        grid-row: 3;
        justify-content: flex-end;
        align-items: center;
        padding: 0 0.75rem 0.75rem;
        gap: 0.75rem;
    }

    /* Hide price column for multi-item types (actions are inside items) */
    .part-row--multi .part-row__price-column {
        display: none;
    }

    /* Show price column content for single-item types */
    .part-row__price-column-content {
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }

    /* Hide price column content for multi-item types */
    .part-row--multi .part-row__price-column-content {
        display: none;
    }

    /* Mobile builder header (catalog style) */
    .builder-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
        padding-bottom: 1rem;
    }

    .builder-header__title {
        font-size: 1.5rem;
    }

    .builder-header__badge {
        font-size: 0.8125rem;
    }

    .builder-subtitle {
        font-size: 0.875rem;
    }
}