/* Inventory App Styles
 * ──────────────────────────────────────────────────────────────────
 * CSS Variable Convention (Golden Reference)
 * ──────────────────────────────────────────────────────────────────
 * - ALL colors MUST use theme.css variables (never hardcoded hex)
 * - Palette tokens:   var(--blue-400), var(--gray-200), etc.
 * - Semantic tokens:   var(--success), var(--danger), var(--warning), etc.
 * - Subtle backgrounds: color-mix(in srgb, var(--token) <opacity>%, transparent)
 * - Layout:            var(--space-*), var(--radius-*), var(--font-*)
 * ────────────────────────────────────────────────────────────────── */

/* Search input in header */
.header-actions .search-input {
    width: 180px;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--bg-base);
    color: var(--text-primary);
    font-size: var(--font-sm);
}

.header-actions .search-input:focus {
    outline: none;
    border-color: var(--accent);
}

.header-actions .search-input::placeholder {
    color: var(--text-tertiary);
}

/* Filter bar layout */
.filter-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-3);
}

.filter-bar .filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

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

/* =============================================================================
   KPI DASHBOARD
   ============================================================================= */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.kpi-card {
    position: relative;
    background: rgba(30, 30, 35, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.kpi-card:hover {
    transform: translateY(-2px);
    background: rgba(40, 40, 45, 0.6);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.kpi-card:active {
    transform: translateY(0);
}

.kpi-card.active {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 2px var(--bg-base), 0 0 0 4px var(--accent);
}

.kpi-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: currentColor;
}

/* KPI Status Colors */
.kpi-card.status-total {
    color: var(--text-primary);
}

.kpi-card.status-in-stock {
    color: var(--success);
}

.kpi-card.status-low-stock {
    color: var(--warning);
}

.kpi-card.status-out-of-stock {
    color: var(--danger);
}

.kpi-card.status-expiring {
    color: var(--purple-500, #a855f7);
}

.kpi-content {
    display: flex;
    flex-direction: column;
}

.kpi-count {
    font-size: var(--font-2xl);
    font-weight: 700;
    line-height: 1;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.kpi-label {
    font-size: var(--font-2xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.kpi-icon {
    font-size: var(--font-xl);
    opacity: 0.2;
    transform: rotate(-10deg);
}

.kpi-card:hover .kpi-icon {
    opacity: 0.4;
    transform: rotate(0deg) scale(1.1);
    transition: all 0.3s ease;
}

/* Spacing */
.mb-4 {
    margin-bottom: var(--space-4);
}

/* =============================================================================
   FORM GRID
   ============================================================================= */
.form-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2);
}

.form-grid .control-group {
    margin-bottom: 0;
}

.form-grid .control-group label {
    margin-bottom: 4px;
}

@media (max-width: 900px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}

.form-grid .control-group input:not([type="file"]),
.form-grid .control-group select {
    width: 100%;
    height: 38px;
    padding: 0 var(--space-2);
    box-sizing: border-box;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    background: var(--bg-base);
    color: var(--text-primary);
}

.form-grid .control-group input:focus,
.form-grid .control-group select:focus {
    outline: none;
    border-color: var(--accent);
}

/* =============================================================================
   INVENTORY LIST
   ============================================================================= */

/* Fill viewport - DISABLED specifically to allow full page scroll */
.container:has(.inventory-list) {
    display: block;
    min-height: auto;
}

.container:has(.inventory-list)>main {
    display: block;
}

.section:has(.inventory-list) {
    display: block;
}

.inventory-list {
    display: block;
    position: relative;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-2);
    /* No overflow-y: auto, No fixed min-height to allow full page scroll */
}

/* =============================================================================
   INVENTORY ITEM CARD
   ============================================================================= */
.inventory-item {
    display: flex;
    align-items: stretch;
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.2s ease;
    min-height: 68px;
    box-sizing: border-box;
    margin-bottom: var(--space-1);
    position: relative;
}

.inventory-item:hover {
    border-color: var(--accent);
    transform: translateX(2px);
    background: var(--bg-hover);
}

/* Status indicator bar */
.inventory-status-bar {
    width: 4px;
    flex-shrink: 0;
}

.inventory-status-bar.status-in-stock {
    background: var(--success);
}

.inventory-status-bar.status-low-stock {
    background: var(--warning);
    background-image: repeating-linear-gradient(-45deg,
            transparent,
            transparent 3px,
            rgba(0, 0, 0, 0.15) 3px,
            rgba(0, 0, 0, 0.15) 5px);
}

.inventory-status-bar.status-out-of-stock {
    background: var(--danger);
    background-image: repeating-linear-gradient(45deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.3) 2px,
            rgba(0, 0, 0, 0.3) 4px);
}

/* Icon area */
.inventory-icon {
    width: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--border-subtle);
    font-size: 1.5rem;
    color: var(--text-tertiary);
    background: rgba(0, 0, 0, 0.1);
}

.inventory-icon.clickable {
    cursor: pointer;
}

.inventory-icon.clickable:hover {
    background: rgba(59, 130, 246, 0.1);
}

/* Main content */
.inventory-main {
    flex: 1;
    min-width: 0;
    padding: var(--space-2) var(--space-3);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
}

.inventory-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.inventory-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-xs);
    color: var(--text-secondary);
}

.inventory-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

/* Typography */
.item-name {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.vendor-tag {
    color: var(--text-tertiary);
}

.ean-tag {
    font-family: var(--font-family-mono);
    background: rgba(255, 255, 255, 0.05);
    padding: 1px 6px;
    border-radius: 4px;
}

/* Category badge */
.category-badge {
    display: inline-block;
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--bg-surface);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
}

/* Location badge */
.location-badge {
    display: inline-block;
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-2xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    background: color-mix(in srgb, var(--blue-400) 15%, transparent);
    color: var(--blue-400);
    border: 1px solid color-mix(in srgb, var(--blue-400) 25%, transparent);
}

/* =============================================================================
   INVENTORY INFO PANEL (right side)
   ============================================================================= */
.inventory-info {
    display: grid;
    grid-template-columns: auto auto;
    gap: 2px var(--space-3);
    padding: var(--space-2) var(--space-3);
    min-width: 180px;
    border-left: 1px solid var(--border-subtle);
    background: rgba(0, 0, 0, 0.05);
    align-items: center;
    align-content: center;
}

.info-block {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.info-label {
    font-size: 10px;
    text-transform: uppercase;
    color: var(--text-tertiary);
    font-weight: 600;
}

/* Qty display */
.qty-display {
    font-size: var(--font-sm);
    font-weight: 700;
    font-family: var(--font-family-mono);
}

.qty-display.stock-in-stock {
    color: var(--success);
}

.qty-display.stock-low-stock {
    color: var(--warning);
}

.qty-display.stock-out-of-stock {
    color: var(--danger);
}

.qty-value {
    font-weight: 700;
}

.qty-separator {
    opacity: 0.4;
    margin: 0 2px;
}

.qty-min {
    opacity: 0.6;
    font-weight: 400;
}

/* Stock status badge */
.stock-badge {
    display: inline-block;
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-2xs);
    font-weight: 600;
    text-transform: uppercase;
    width: fit-content;
}

.stock-badge.stock-in-stock {
    background: color-mix(in srgb, var(--success) 20%, transparent);
    color: var(--success);
}

.stock-badge.stock-low-stock {
    background: color-mix(in srgb, var(--warning) 20%, transparent);
    color: var(--warning);
}

.stock-badge.stock-out-of-stock {
    background: color-mix(in srgb, var(--danger) 20%, transparent);
    color: var(--danger);
}

/* Expiry display */
.expiry-date {
    font-size: var(--font-xs);
    color: var(--text-secondary);
    white-space: nowrap;
}

.expiry-days {
    font-size: var(--font-xs);
    font-weight: 600;
    white-space: nowrap;
}

.expiry-days.days-ok {
    color: var(--success);
}

.expiry-days.days-expiring {
    color: var(--warning);
}

.expiry-days.days-expired {
    color: var(--danger);
}

/* Expiry badge (used in detail modal) */
.expiry-badge {
    display: inline-block;
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-2xs);
    font-weight: 600;
    text-transform: uppercase;
}

.expiry-badge.expiry-ok {
    background: color-mix(in srgb, var(--success) 20%, transparent);
    color: var(--success);
}

.expiry-badge.expiry-expiring {
    background: color-mix(in srgb, var(--warning) 20%, transparent);
    color: var(--warning);
}

.expiry-badge.expiry-expired {
    background: color-mix(in srgb, var(--danger) 20%, transparent);
    color: var(--danger);
}

.expiry-badge.expiry-no-date {
    background: rgba(156, 163, 175, 0.2);
    color: var(--gray-400);
}

/* =============================================================================
   ACTIONS
   ============================================================================= */
.inventory-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-1);
    padding: var(--space-2);
    align-content: center;
}

.inventory-actions .btn {
    min-width: 40px;
    text-align: center;
}

/* =============================================================================
   DETAIL MODAL
   ============================================================================= */
.detail-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--border-subtle);
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-label {
    font-size: var(--font-2xs);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-value {
    font-size: var(--font-sm);
    color: var(--text-primary);
}

.detail-value a {
    color: var(--blue-400);
    text-decoration: none;
    word-break: break-all;
}

.detail-value a:hover {
    text-decoration: underline;
}

/* =============================================================================
   LOADING STATE
   ============================================================================= */
.inventory-list.loading {
    pointer-events: none;
    opacity: 0.5;
}

.inventory-list.loading::after {
    content: '';
    position: absolute;
    border: 3px solid var(--border-default);
    border-top-color: var(--accent);
    border-radius: 50%;
    width: 28px;
    height: 28px;
    top: 50%;
    left: 50%;
    margin: -14px 0 0 -14px;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* =============================================================================
   FOCUS & KEYBOARD NAV
   ============================================================================= */
.inventory-item:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.inventory-item:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* =============================================================================
   RESPONSIVE
   ============================================================================= */
@media (max-width: 768px) {
    .inventory-item {
        flex-wrap: wrap;
        min-height: auto;
    }

    .inventory-icon {
        display: none;
    }

    .inventory-meta {
        flex-wrap: wrap;
    }

    .inventory-info {
        width: 100%;
        border-left: none;
        border-top: 1px solid var(--border-subtle);
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-2);
        justify-content: space-between;
    }

    .inventory-actions {
        width: 100%;
        grid-template-columns: repeat(4, 1fr);
        border-top: 1px solid var(--border-subtle);
    }

    .filter-bar {
        grid-template-columns: repeat(2, 1fr);
    }

    .header-actions {
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .header-actions .search-input {
        width: 100%;
        order: -1;
    }
}

@media (max-width: 480px) {
    .filter-bar {
        grid-template-columns: 1fr;
    }

    .inventory-item {
        min-height: auto;
    }

    .inventory-header {
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .inventory-actions {
        grid-template-columns: repeat(4, 1fr);
    }
}