:root {
    --bg-color: #000000;
    --card-bg: #0a0a0a;
    --text-color: #e0e0e0;
    --accent-color: #bb86fc;
    --accent-secondary: #03dac6;
    --border-color: #222;
    --font-stack: 'Inter', system-ui, -apple-system, sans-serif;
}

* {
    box-sizing: border-box;
}

body.pitch-black {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-stack);
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* ==================== SIDEBAR ==================== */
.sidebar {
    width: 300px;
    background: linear-gradient(180deg, #050505 0%, #0a0a0a 100%);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
}

.sidebar.hidden {
    margin-left: -300px;
}

.sidebar-header {
    padding: 20px 15px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(187, 134, 252, 0.05);
}

.sidebar-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--accent-color);
}

.sidebar-controls {
    padding: 10px;
    display: flex;
    gap: 8px;
    background: #000;
    border-bottom: 1px solid var(--border-color);
}

.category-search-container {
    padding: 12px;
}

.category-search-container input {
    width: 100%;
    background: #111;
    border: 1px solid #333;
    color: #fff;
    padding: 10px;
    border-radius: 6px;
    font-size: 0.85rem;
    transition: border-color 0.2s;
}

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

.category-list {
    flex-grow: 1;
    overflow-y: auto;
    padding: 0;
    margin: 0;
    list-style: none;
}

.category-list::-webkit-scrollbar {
    width: 8px;
}

.category-list::-webkit-scrollbar-track {
    background: #000;
}

.category-list::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 4px;
}

.category-item {
    padding: 10px 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    border-bottom: 1px solid #111;
    font-size: 0.88rem;
    transition: all 0.15s ease;
    position: relative;
}

.category-item:hover {
    background: rgba(187, 134, 252, 0.1);
    padding-left: 18px;
}

.category-item.active {
    background: rgba(187, 134, 252, 0.15);
    border-left: 3px solid var(--accent-color);
}

.category-item.subcategory {
    padding-left: 40px;
    font-size: 0.82rem;
    opacity: 0.9;
}

.category-group {
    padding: 0;
    margin: 0;
    border-bottom: 1px solid var(--border-color);
}

.group-header-content {
    padding: 12px 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    background: rgba(3, 218, 198, 0.05);
    transition: background 0.2s;
}

.group-header-content:hover {
    background: rgba(3, 218, 198, 0.1);
}

.category-name {
    flex: 1;
    user-select: none;
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.dashboard-header {
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(90deg, #050505 0%, #0a0a0a 100%);
    border-bottom: 1px solid var(--border-color);
    z-index: 50;
    flex-wrap: wrap;
    gap: 10px;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-toggle-btn {
    background: transparent;
    border: 1px solid #333;
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.2s;
}

.sidebar-toggle-btn:hover {
    background: #222;
    border-color: var(--accent-color);
}

/* ==================== STATS BAR ==================== */
.stats-bar {
    display: flex;
    gap: 40px;
    padding: 15px 20px;
    background: #000;
    border-bottom: 1px solid #222;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.7rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    font-weight: 600;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--accent-secondary);
}

.stat-value.highlight {
    color: var(--accent-color);
}

/* ==================== PRODUCT GRID ==================== */
.p-view-sh {
    flex-grow: 1;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    padding: 15px;
    background: #000;
}

.p-view-sh::-webkit-scrollbar {
    width: 12px;
}

.p-view-sh::-webkit-scrollbar-track {
    background: #000;
}

.p-view-sh::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 6px;
}

.p-item-sh {
    background: var(--card-bg) !important;
    border: 1px solid #333 !important;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.25s ease;
    display: flex !important;
    flex-direction: column !important;
    min-height: 280px !important;
    height: auto !important;
    visibility: visible !important;
    opacity: 1 !important;
    z-index: 10 !important;
}

.p-item-sh:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
    box-shadow: 0 8px 24px rgba(187, 134, 252, 0.2);
}

.p-item-sh.selected-for-comparison {
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 20px rgba(187, 134, 252, 0.4);
}

.p-img-box {
    width: 100%;
    aspect-ratio: 1/1;
    min-height: 150px; /* Fallback for browsers not supporting aspect-ratio */
    background: #fff;
    position: relative;
    overflow: hidden;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s;
}

.p-item-sh:hover .product-image {
    transform: scale(1.05);
}

.price-tag {
    position: absolute;
    bottom: 8px;
    left: 8px;
    background: rgba(0,0,0,0.85);
    color: var(--accent-secondary);
    padding: 4px 10px;
    font-weight: bold;
    font-size: 1rem;
    border-radius: 4px;
    backdrop-filter: blur(4px);
}

.price-change {
    position: absolute;
    top: 8px;
    left: 8px;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 4px;
}

.price-change.positive {
    background: rgba(76, 175, 80, 0.9);
    color: #fff;
}

.price-change.negative {
    background: rgba(244, 67, 54, 0.9);
    color: #fff;
}

.sale-corner {
    position: absolute;
    top: 0;
    right: 0;
    background: linear-gradient(135deg, #ff4081, #f50057);
    color: #fff;
    padding: 6px 12px;
    font-size: 0.75rem;
    border-radius: 0 0 0 8px;
    font-weight: bold;
}

.favorite-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0,0,0,0.7);
    border: none;
    color: #ccc;
    padding: 8px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s;
    backdrop-filter: blur(4px);
}

.favorite-btn:hover, .favorite-btn.active {
    color: #ff4081;
    transform: scale(1.1);
}

.p-detail-sh {
    padding: 12px;
    background: var(--card-bg);
}

.product-name {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: #fff;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-unit {
    font-size: 0.75rem;
    color: #888;
}

.compare-hint {
    font-size: 0.7rem;
    color: var(--accent-color);
    margin-top: 4px;
    text-align: center;
}

.group-header {
    grid-column: 1 / -1;
    background: linear-gradient(90deg, rgba(187, 134, 252, 0.1) 0%, transparent 100%);
    padding: 12px 15px;
    font-weight: bold;
    font-size: 0.95rem;
    color: var(--accent-color);
    border-left: 4px solid var(--accent-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

/* ==================== BUTTONS ==================== */
.btn-icon {
    background: transparent;
    border: 1px solid #333;
    color: #ccc;
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-icon:hover {
    background: #222;
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.btn-icon.active {
    background: var(--accent-color);
    color: #000;
    border-color: var(--accent-color);
}

.search-input {
    background: #111;
    border: 1px solid #333;
    color: #fff;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    transition: border-color 0.2s;
}

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

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.clear-search {
    position: absolute;
    right: 10px;
    cursor: pointer;
    color: #666;
    transition: color 0.2s;
    display: none;
    z-index: 5;
}

.clear-search:hover {
    color: var(--accent-color);
}

.stat-item.clickable {
    cursor: pointer;
    transition: all 0.2s;
}

.stat-item.clickable:hover {
    background: rgba(187, 134, 252, 0.1);
    transform: translateY(-2px);
    border-color: var(--accent-color);
}

#main-content-area {
    position: relative;
    flex-grow: 1;
    overflow-y: auto;
}

.price-changes-panel {
    padding: 20px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid #333;
    padding-bottom: 10px;
}

.p-changes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
}

.p-changes-grid .p-item-sh {
    min-height: 220px !important;
}

.p-changes-grid .p-detail-sh {
    padding: 8px;
}

.p-changes-grid .product-name {
    font-size: 0.75rem;
}

.p-changes-grid .price-tag {
    font-size: 0.85rem;
    padding: 2px 6px;
}

.p-changes-grid .price-change {
    font-size: 0.65rem;
    padding: 2px 5px;
}

.price-change-card {
    background: var(--card-bg);
    border: 1px solid #222;
    border-radius: 8px;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: border-color 0.2s;
}

.price-change-card:hover {
    border-color: var(--accent-color);
}

.change-card-img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    background: #fff;
    border-radius: 4px;
}

.change-card-info { flex: 1; }
.change-card-name { font-size: 0.85rem; font-weight: bold; margin-bottom: 4px; }
.change-card-unit { font-size: 0.75rem; color: #888; }
.change-card-diff.positive { color: #4caf50; }
.change-card-diff.negative { color: #f44; }

/* ==================== MODALS ==================== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    inset: 0;
    background: rgba(0,0,0,0.95);
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(8px);
}

.modal-content {
    background: linear-gradient(135deg, #0a0a0a 0%, #111 100%);
    width: 100%;
    max-width: 900px;
    max-height: 85vh;
    border-radius: 12px;
    padding: 30px;
    position: relative;
    display: flex;
    flex-direction: column;
    border: 1px solid #333;
    overflow: hidden;
    animation: modalFadeIn 0.3s ease;
}

.modal-content.large-modal {
    max-width: 1400px;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    color: var(--accent-color);
    font-size: 1.5rem;
}

.close-modal {
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
    line-height: 1;
}

.close-modal:hover {
    color: var(--accent-color);
}

.scrollable-content {
    flex: 1;
    overflow-y: auto;
    margin-top: 15px;
}

.scrollable-content::-webkit-scrollbar {
    width: 10px;
}

.scrollable-content::-webkit-scrollbar-track {
    background: #000;
}

.scrollable-content::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 5px;
}

/* ==================== SCI-FI CHART MODAL ==================== */
.sci-fi-modal {
    background: linear-gradient(135deg, #000 0%, #0a0a0a 50%, #111 100%);
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 40px rgba(187, 134, 252, 0.3);
}

.chart-analytics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.stat-card {
    background: rgba(187, 134, 252, 0.05);
    border: 1px solid #222;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    transition: all 0.3s;
}

.stat-card:hover {
    background: rgba(187, 134, 252, 0.1);
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.stat-card .stat-label {
    font-size: 0.7rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.stat-card .stat-value {
    font-size: 1.4rem;
    font-weight: bold;
    color: var(--accent-secondary);
}

.chart-container {
    height: 400px;
    margin-bottom: 20px;
    background: rgba(0,0,0,0.5);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #222;
}

.prediction-panel {
    background: rgba(3, 218, 198, 0.05);
    border: 1px solid rgba(3, 218, 198, 0.3);
    border-radius: 8px;
    padding: 20px;
}

.prediction-panel h3 {
    margin: 0 0 15px 0;
    color: var(--accent-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.insight-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px;
    background: rgba(0,0,0,0.5);
    margin-bottom: 10px;
    border-radius: 6px;
    border-left: 3px solid transparent;
    transition: all 0.2s;
}

.insight-item:hover {
    background: rgba(0,0,0,0.7);
    border-left-color: var(--accent-color);
}

.modal-content.full-screen-modal {
    max-width: 95vw;
    max-height: 95vh;
    height: 95vh;
    padding: 20px;
}

.chart-analytics.full-width-analytics {
    grid-template-columns: repeat(6, 1fr);
    gap: 10px;
    margin-bottom: 10px;
}

.chart-container.full-height-container {
    flex: 1;
    height: auto;
    min-height: 0;
}

/* ==================== PRICE CHANGES MODAL ==================== */
.modal-filters {
    padding: 15px;
    background: rgba(0,0,0,0.5);
    border-radius: 8px;
    margin-bottom: 15px;
    border: 1px solid #222;
}

.price-change-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: rgba(255,255,255,0.02);
    margin-bottom: 6px;
    border-radius: 8px;
    border: 1px solid #222;
    cursor: pointer;
    transition: all 0.2s;
}

.price-change-card:hover {
    background: rgba(255,255,255,0.05);
    border-color: var(--accent-color);
    transform: translateX(5px);
}

.change-card-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    background: #fff;
    border-radius: 4px;
}

.change-card-info {
    flex: 1;
}

.change-card-name {
    font-weight: bold;
    margin-bottom: 2px;
    font-size: 0.85rem;
}

.change-card-unit {
    font-size: 0.7rem;
    color: #888;
}

.change-card-prices {
    text-align: right;
    font-size: 0.85rem;
}

.change-card-diff {
    text-align: center;
    padding: 5px 12px;
    border-radius: 6px;
    font-weight: bold;
    min-width: 80px;
    font-size: 0.8rem;
}

.change-card-diff.positive {
    background: rgba(76, 175, 80, 0.2);
    color: #4caf50;
}

.change-card-diff.negative {
    background: rgba(244, 67, 54, 0.2);
    color: #f44;
}

/* ==================== COMPARE MODAL ==================== */
.compare-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px;
    background: rgba(0,0,0,0.5);
    border-radius: 6px;
}

#compare-chart-container {
    height: 400px;
    margin-bottom: 20px;
    background: rgba(0,0,0,0.5);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #222;
}

.compare-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.compare-detail-card {
    background: rgba(255,255,255,0.02);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #222;
}

.compare-stat {
    font-size: 0.85rem;
    padding: 6px 0;
    color: #aaa;
}

.compare-stat strong {
    color: #fff;
    float: right;
}

.compare-stat .positive {
    color: #4caf50;
}

.compare-stat .negative {
    color: #f44;
}

/* ==================== CUSTOM CATEGORY MODAL ==================== */
.custom-cat-product-list {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid #333;
    border-radius: 6px;
    padding: 10px;
    margin-top: 8px;
    background: rgba(0,0,0,0.5);
}

.custom-cat-product-item {
    padding: 8px;
    border-bottom: 1px solid #222;
    display: flex;
    align-items: center;
    gap: 10px;
}

.custom-cat-product-item:last-child {
    border-bottom: none;
}

.custom-cat-product-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.custom-cat-product-item label {
    flex: 1;
    cursor: pointer;
    font-size: 0.85rem;
}

/* ==================== LOADING SPINNER ==================== */
.spinner-container {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3000;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.spinner-container.active {
    display: flex;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(187, 134, 252, 0.1);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .sidebar {
        width: 250px;
    }
    
    .sidebar.hidden {
        margin-left: -250px;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 8px;
        padding: 10px;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .header-left, .header-right {
        width: 100%;
        justify-content: space-between;
    }
    
    .stats-bar {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .modal-content {
        padding: 20px;
    }
    
    .chart-analytics {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==================== ADDITIONAL UTILITIES ==================== */
input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--accent-color);
}

input[type="radio"] {
    cursor: pointer;
    accent-color: var(--accent-color);
}

label {
    cursor: pointer;
    user-select: none;
}

select {
    cursor: pointer;
}

.p-view-sh.good-buys-view {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
}

.p-view-sh.good-buys-view .p-item-sh {
    min-height: 240px !important;
}