/* Base Resets & Variables */
:root {
    --primary-color: #e63946;
    --dark-bg: #1d3557;
    --light-bg: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #2b2d42;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --soldout-color: #ef4444;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--light-bg);
    color: var(--text-color);
    padding-bottom: 50px;
    overflow-x: hidden;
    width: 100%;
}

/* Header / Navigation */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--dark-bg);
    color: white;
    padding: 12px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.logo h1 { 
    font-size: 1.3rem; 
    font-weight: 700;
}
.logo .tagline { 
    font-size: 0.75rem; 
    opacity: 0.8; 
}

.cart-btn {
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 4px rgba(230, 57, 70, 0.3);
}

/* Main Container */
.container, .hub-container {
    max-width: 1100px;
    margin: 15px auto;
    padding: 0 15px;
    width: 100%;
}

.banner {
    text-align: center;
    margin-bottom: 15px;
}

/* Search Bar Styling */
.search-wrapper {
    margin-bottom: 15px;
}
.search-input {
    width: 100%;
    padding: 12px 16px;
    border-radius: 25px;
    border: 1px solid var(--border-color);
    outline: none;
    font-size: 0.95rem;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

/* Category & Admin Tab Filters (Horizontal Scroll on Mobile) */
.category-filter, .filter-bar, .module-tab-bar {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 5px 2px 12px 2px;
    margin-bottom: 15px;
    scrollbar-width: none; /* Firefox */
    -webkit-overflow-scrolling: touch;
    width: 100%;
    flex-wrap: nowrap;
}

.category-filter::-webkit-scrollbar, 
.filter-bar::-webkit-scrollbar, 
.module-tab-bar::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.filter-btn, .tab-btn {
    border: 1px solid var(--border-color);
    background: white;
    padding: 8px 18px;
    border-radius: 20px;
    cursor: pointer;
    white-space: nowrap;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-color);
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.filter-btn.active, .tab-btn.active {
    background: var(--dark-bg);
    color: white;
    border-color: var(--dark-bg);
}

/* Menu Grid Layout */
.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 15px;
}

/* Menu Card & Floating Sold Out Badge */
.menu-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 2px 5px rgba(0,0,0,0.03);
    transition: transform 0.2s ease;
    overflow: hidden;
}

.menu-card.out-of-stock {
    background-color: #fafafa;
}

.menu-card.out-of-stock .card-title,
.menu-card.out-of-stock .card-price {
    color: #a1a1aa !important;
}

.stock-badge-soldout {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--soldout-color);
    color: white;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 4px 8px;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 10;
}

.card-title { 
    font-size: 1.05rem; 
    font-weight: 700;
    margin-bottom: 4px; 
    color: var(--text-color);
}

.card-category {
    font-size: 0.72rem;
    text-transform: uppercase;
    color: #6b7280;
    font-weight: 600;
    margin-bottom: 8px;
    display: block;
}

.card-price { 
    font-weight: 700; 
    color: var(--success-color); 
    font-size: 1.1rem;
}

.add-btn {
    background: var(--dark-bg);
    color: white;
    border: none;
    padding: 11px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.9rem;
    width: 100%;
    margin-top: 15px;
    transition: background-color 0.2s ease;
}

.add-btn:active {
    transform: scale(0.98);
}

.add-btn:disabled {
    background: #e2e8f0 !important;
    color: #94a3b8 !important;
    cursor: not-allowed;
}

/* Global Table Mobile Scroll Wrapper */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 15px;
}

table {
    width: 100%;
    border-collapse: collapse;
    white-space: nowrap;
}

/* Grid Layouts for Admin Cards / Stats */
.stats-grid, .reports-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

/* POS Layout Flex Wrapper */
.pos-billing-wrapper {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.pos-billing-wrapper .table-section {
    flex: 1;
    min-width: 0; /* Prevents flex overflow */
}

.pos-billing-wrapper .receipt-section {
    width: 320px;
    flex-shrink: 0;
}

/* Strict Mobile Optimization (< 768px) */
@media (max-width: 768px) {
    .container, .hub-container {
        padding: 0 10px;
        margin: 8px auto;
    }

    .navbar {
        padding: 10px 12px;
    }

    .logo h1 {
        font-size: 1.1rem;
    }

    .menu-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    /* Wrap POS side-by-side layout into single column */
    .pos-billing-wrapper {
        flex-direction: column;
    }

    .pos-billing-wrapper .receipt-section {
        width: 100%;
    }

    /* Wrap Inventory row items on mobile */
    .inventory-item-row {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 10px;
    }

    .inventory-item-actions {
        width: 100%;
        display: flex;
        justify-content: flex-end;
        gap: 8px;
    }

    /* Order Action Buttons Wrap */
    .order-actions-row {
        flex-direction: column !important;
        gap: 8px !important;
    }
    
    .order-actions-row select, 
    .order-actions-row button {
        width: 100% !important;
    }

    .modal-content {
        width: 95% !important;
        max-height: 90vh !important;
        padding: 15px !important;
        overflow-y: auto !important;
    }
}

/* PRINT-SPECIFIC OVERRIDES (Thermal Receipt Optimization) */
@media print {
    @page {
        size: 80mm auto;
        margin: 0;
    }

    body {
        background: #fff !important;
        color: #000 !important;
        padding: 0 !important;
        margin: 0 !important;
        width: 100% !important;
    }

    /* Hide UI elements on print */
    .navbar, 
    .back-nav-btn, 
    .hub-container, 
    .module-tab-bar, 
    .stats-bar, 
    .filter-bar, 
    .modal, 
    button, 
    #logout-btn, 
    #enable-sound-btn {
        display: none !important;
    }

    .view-section {
        display: block !important;
        padding: 0 !important;
        margin: 0 !important;
        width: 100% !important;
    }

    .inventory-card, .printable-receipt {
        border: none !important;
        box-shadow: none !important;
        padding: 5px !important;
        width: 100% !important;
    }

    table {
        width: 100% !important;
        border-collapse: collapse !important;
        font-size: 12px !important;
    }

    th, td {
        padding: 4px 2px !important;
        color: #000 !important;
    }
}