/* ==========================================================================
   STYLE SHEET: ร้านชำ เส 89 (Premium, Minimalist, Glassmorphism POS Theme)
   ========================================================================== */

/* 1. Reset & Core Variable Settings */
:root {
    /* Color Palette - Premium Slate & Neon Accents */
    --bg-primary: #090d16;
    --bg-secondary: #0f172a;
    --bg-card: rgba(22, 28, 45, 0.7);
    --bg-input: #1e293b;
    --bg-hover: #1e293b;
    
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-primary: #6366f1; /* Indigo */
    --color-primary-hover: #4f46e5;
    --color-primary-soft: rgba(99, 102, 241, 0.15);
    
    --color-success: #10b981; /* Emerald */
    --color-success-hover: #059669;
    --color-success-soft: rgba(16, 185, 129, 0.15);
    
    --color-warning: #f59e0b; /* Amber */
    --color-warning-soft: rgba(245, 158, 11, 0.15);
    
    --color-danger: #ef4444; /* Rose */
    --color-danger-hover: #dc2626;
    --color-danger-soft: rgba(239, 68, 68, 0.15);

    --color-info: #06b6d4; /* Cyan */
    --color-info-soft: rgba(6, 182, 212, 0.15);
    
    --font-family: 'Prompt', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --transition-speed: 0.25s;
    --border-radius: 12px;
}

body.light-mode {
    --bg-primary: #F9F6F0; /* Soft warm paper/ivory tone like Claude AI */
    --bg-secondary: #ffffff; /* Crisp white for cards/panels */
    --bg-card: rgba(255, 255, 255, 0.82);
    --bg-input: #ffffff; /* Warm white input fields */
    --bg-hover: #f1ebd9; /* Cozy beige-tan hover color */
    
    --border-color: rgba(84, 78, 71, 0.12); /* Soft warm-toned borders */
    --border-hover: rgba(84, 78, 71, 0.22);
    
    --text-primary: #191919; /* Warm dark gray/black */
    --text-secondary: #5d584f; /* Cozy warm medium gray */
    --text-muted: #8c8576; /* Soft warm muted text */
    
    --card-shadow: 0 8px 32px 0 rgba(84, 78, 71, 0.04);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-input);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Helpers */
.hidden { display: none !important; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-success) !important; }
.text-danger { color: var(--color-danger) !important; }
.text-warning { color: var(--color-warning) !important; }
.fw-medium { font-weight: 500; }
.font-bold { font-weight: 700; }
.badge {
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 50px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.badge-success {
    background-color: var(--color-success-soft);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}
.badge-warning {
    background-color: var(--color-warning-soft);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}
.badge-danger {
    background-color: var(--color-danger-soft);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* 2. Form Inputs & Buttons */
input, select, textarea {
    font-family: var(--font-family);
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 14px;
    border-radius: var(--border-radius);
    outline: none;
    font-size: 0.95rem;
    transition: all var(--transition-speed) ease;
    width: 100%;
}
input:focus, select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}
input::placeholder {
    color: var(--text-muted);
}

.btn {
    font-family: var(--font-family);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    font-size: 0.95rem;
}
.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
}
.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
}
.btn-primary:disabled {
    background-color: var(--bg-input);
    color: var(--text-muted);
    cursor: not-allowed;
    border-color: var(--border-color);
}
.btn-secondary {
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-hover);
    border-color: var(--text-muted);
}
.btn-outline-danger {
    background-color: transparent;
    color: var(--color-danger);
    border: 1px solid var(--color-danger);
}
.btn-outline-danger:hover {
    background-color: var(--color-danger-soft);
}
.btn-outline-primary {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}
.btn-outline-primary:hover {
    background-color: var(--color-primary-soft);
}
.btn-outline-secondary {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.btn-outline-secondary:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-muted);
}
.btn-outline-secondary.active {
    background-color: var(--color-primary) !important;
    color: #ffffff !important;
    border-color: var(--color-primary) !important;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}
.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}
.btn-lg {
    padding: 14px 28px;
    font-size: 1.1rem;
}
.btn-block {
    display: flex;
    width: 100%;
}
.btn-icon-only {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--border-radius);
}

/* 3. Login Page Layout */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    background-image: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 60%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}
.login-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--card-shadow);
    text-align: center;
    animation: fadeInUp 0.5s ease-out;
}
.login-header h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #ffffff 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.login-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 30px;
}
.logo-icon {
    width: 64px;
    height: 64px;
    background-color: var(--color-primary-soft);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border: 1px solid rgba(99, 102, 241, 0.3);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.2);
}
.logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}
.form-group {
    margin-bottom: 20px;
    text-align: left;
}
.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}
.input-password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}
.input-password-wrapper input {
    padding-left: 42px;
    padding-right: 42px;
}
.input-icon {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    width: 18px;
    height: 18px;
    pointer-events: none;
}
.toggle-password {
    position: absolute;
    right: 14px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
}
.toggle-password:hover {
    color: var(--text-primary);
}
.password-hint {
    font-size: 0.95rem;
    color: var(--color-warning);
    margin-top: 12px;
    display: block;
    text-align: center;
    font-style: italic;
    font-weight: 500;
}
.error-msg {
    color: var(--color-danger);
    background-color: var(--color-danger-soft);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 10px;
    border-radius: var(--border-radius);
    font-size: 0.85rem;
    margin-bottom: 20px;
    display: none;
}

/* 4. App Main Layout */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.main-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}
.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: opacity 0.25s ease;
}
.header-logo:hover {
    opacity: 0.85;
}
.header-logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}
.header-logo h1 {
    font-size: 1.3rem;
    font-weight: 600;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-link {
    font-family: var(--font-family);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-speed) ease;
}
.nav-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-hover);
}
.nav-link.active {
    color: var(--color-primary);
    background-color: var(--color-primary-soft);
}

.scanner-status {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--color-success);
}
.pulse-indicator {
    width: 8px;
    height: 8px;
    background-color: var(--color-success);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulse 1.6s infinite;
}

.main-content {
    flex: 1;
    padding: 30px 40px;
    display: flex;
    flex-direction: column;
}
.tab-content {
    display: none;
    animation: fadeIn var(--transition-speed) ease;
}
.tab-content.active {
    display: block;
}

/* 5. POS Screen Layout (ขายของหน้าร้าน) */
.pos-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 30px;
    height: calc(100vh - 150px);
}
.pos-products-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-width: 0;
}
.panel-header-search {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 15px;
    margin-bottom: 20px;
    align-items: center;
}
.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}
.search-input-wrapper input {
    padding-left: 45px;
}
.search-icon {
    position: absolute;
    left: 15px;
    color: var(--text-muted);
}
.scanner-hook-box {
    display: flex;
    gap: 8px;
}
/* Hidden input but accessible */
#pos-scanner-input {
    width: 140px;
    font-size: 0.8rem;
    opacity: 0.6;
}
#pos-scanner-input:focus {
    border-color: var(--color-success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.categories-container {
    margin-bottom: 20px;
}
.categories-scroll {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 8px;
}
.category-btn {
    font-family: var(--font-family);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 18px;
    border-radius: 50px;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-speed) ease;
}
.category-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}
.category-btn.active {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.products-grid-container {
    flex: 1;
    overflow-y: auto;
    padding-right: 5px;
    margin-bottom: 15px;
    width: 100%;
    min-width: 0;
}
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 15px;
}

/* Product Card design */
.product-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-speed) cubic-bezier(0.165, 0.84, 0.44, 1);
    display: flex;
    flex-direction: column;
    position: relative;
}
.product-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}
.product-card-img {
    height: 120px;
    width: 100%;
    object-fit: cover;
    background-color: var(--bg-input);
    border-bottom: 1px solid var(--border-color);
}
.product-card-no-img {
    height: 120px;
    width: 100%;
    background-color: var(--bg-input);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}
.product-card-no-img i {
    width: 28px;
    height: 28px;
}
.product-card-body {
    padding: 12px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.product-card-name {
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 2.8em;
}
.product-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}
.product-card-price {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-success);
}
.product-card-stock {
    font-size: 0.75rem;
    color: var(--text-muted);
}
.product-card-badge {
    position: absolute;
    top: 8px;
    right: 8px;
}

.pos-tip-card {
    background-color: var(--color-primary-soft);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--border-radius);
    padding: 12px 18px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    font-size: 0.8rem;
    line-height: 1.5;
}
.pos-tip-card .tip-icon {
    color: var(--color-primary);
    display: flex;
}
.pos-tip-card .tip-content strong {
    color: var(--text-primary);
}

/* POS Cart Panel (Right side) */
.pos-cart-panel {
    background: var(--bg-card);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    height: auto;
    max-height: 100%;
    align-self: start;
    padding: 20px;
    min-width: 0;
}
.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}
.cart-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}
.cart-items-wrapper {
    flex: 0 1 auto;
    overflow-y: auto;
    margin-bottom: 15px;
    padding-right: 5px;
    border-bottom: 1px solid var(--border-color);
}
.empty-cart-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: auto;
    min-height: 140px;
    color: var(--text-muted);
    text-align: center;
    padding: 20px 10px;
}
.empty-cart-state .empty-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.4;
}
.empty-cart-state p {
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px;
}
.empty-cart-state span {
    font-size: 0.75rem;
}

/* Cart items list */
.cart-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    animation: fadeIn 0.2s ease;
}
.cart-item-details {
    flex: 1;
}
.cart-item-name {
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 4px;
    line-height: 1.3;
}
.cart-item-price {
    font-size: 0.8rem;
    color: var(--color-success);
}
.cart-item-qty-control {
    display: flex;
    align-items: center;
    background-color: var(--bg-input);
    border-radius: 8px;
    padding: 2px;
    border: 1px solid var(--border-color);
}
.qty-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    width: 26px;
    height: 26px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    border-radius: 6px;
}
.qty-btn:hover {
    background-color: var(--bg-hover);
}
.qty-val {
    width: 30px;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
}
.cart-item-total {
    font-size: 0.9rem;
    font-weight: 600;
    width: 65px;
    text-align: right;
}
.btn-remove-cart-item {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    padding: 4px;
}
.btn-remove-cart-item:hover {
    color: var(--color-danger);
}

/* Calculations */
.cart-summary-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.input-inline {
    width: 80px;
    text-align: right;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.85rem;
}
.summary-divider {
    border: none;
    border-top: 1px solid var(--border-color);
}
.total-row {
    font-size: 1.1rem;
    color: var(--text-primary);
}
.total-row .font-bold {
    font-size: 1.5rem;
}

.payment-method-section {
    margin-top: 5px;
}
.payment-method-section label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
}
.payment-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.pay-method-btn {
    font-family: var(--font-family);
    background-color: var(--bg-input);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-speed) ease;
}
.pay-method-btn:hover {
    border-color: var(--text-muted);
    color: var(--text-primary);
}
.pay-method-btn.active {
    background-color: var(--color-primary-soft);
    border-color: var(--color-primary);
    color: var(--color-primary);
}
.pay-method-img-btn {
    padding: 0;
    overflow: hidden;
    height: 42px; /* matches Cash button height */
}
.payment-method-img-full {
    width: 100%;
    height: 100%;
    object-fit: fill; /* stretches to fill the button */
    display: block;
}

.payment-details-box {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 12px;
    animation: slideDown 0.2s ease;
}
.input-cash {
    width: 120px;
    text-align: right;
    font-size: 1rem;
    font-weight: 600;
    padding: 6px 12px;
    border-color: var(--border-color);
}
.input-cash:focus {
    border-color: var(--color-success);
}
.fast-cash-buttons {
    display: flex;
    gap: 6px;
    margin-top: 10px;
    margin-bottom: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
}
.btn-fast-cash {
    font-family: var(--font-family);
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    cursor: pointer;
    min-width: 45px;
    flex-shrink: 0;
}
.btn-fast-cash:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}
.change-row {
    margin-top: 8px;
    border-top: 1px dashed var(--border-color);
    padding-top: 8px;
    font-size: 1.1rem;
    color: var(--text-primary);
}
.change-row .font-bold {
    font-size: 1.5rem;
}

.promptpay-qrcode-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 5px 0;
}
.qr-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}
.qr-code-view {
    width: 140px;
    height: 140px;
    background-color: white;
    border-radius: 8px;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.qr-code-view img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.qr-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}
.checkout-btn {
    margin-top: 10px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* 6. Inventory Screen Layout */
.inventory-layout {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.inventory-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    background: var(--bg-card);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    padding: 15px 20px;
    border-radius: var(--border-radius);
}
.controls-left {
    display: flex;
    gap: 10px;
    flex: 1;
}
.controls-left .search-input-wrapper {
    flex: 1;
    max-width: 400px;
}
.controls-right {
    display: flex;
    gap: 10px;
}
.select-modern {
    width: 200px;
    cursor: pointer;
}

/* Tables Styling */
.table-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}
.table-responsive {
    overflow-x: auto;
}
.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}
.table th, .table td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
}
.table th {
    background-color: rgba(255, 255, 255, 0.02);
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.table tbody tr {
    transition: background-color var(--transition-speed) ease;
}
.table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}
.actions-cell-container {
    display: flex;
    gap: 8px;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
}
.table-product-img {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: 8px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
}
.table-product-no-img {
    width: 50px;
    height: 50px;
    background-color: var(--bg-input);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}
.table-product-no-img i {
    width: 20px;
    height: 20px;
}

/* 7. Reports Screen Layout */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}
.metric-card {
    background: var(--bg-card);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}
.metric-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.metric-icon i {
    width: 28px;
    height: 28px;
}
.metric-info {
    display: flex;
    flex-direction: column;
}
.metric-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}
.metric-info h2 {
    font-size: 1.45rem;
    font-weight: 600;
}

.bg-primary-soft { background-color: var(--color-primary-soft); }
.bg-warning-soft { background-color: var(--color-warning-soft); }
.bg-success-soft { background-color: var(--color-success-soft); }
.bg-info-soft { background-color: var(--color-info-soft); }

.report-filters-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 15px 20px;
    border-radius: 16px;
    margin-bottom: 25px;
}
.filters-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}
.date-picker-group {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.input-date {
    width: 160px;
    padding: 8px 12px;
}
.quick-date-buttons {
    display: flex;
    gap: 8px;
}
.export-actions {
    display: flex;
    gap: 10px;
}

.reports-charts-row {
    display: grid;
    grid-template-columns: 2fr 1.2fr;
    gap: 25px;
    margin-bottom: 25px;
}
.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    flex-direction: column;
}
.chart-header {
    margin-bottom: 20px;
}
.chart-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}
.chart-body {
    position: relative;
    height: 300px;
    width: 100%;
}

.table-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}
.table-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

/* 8. Modals UI */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(9, 13, 22, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.25s ease;
}
.modal-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    width: 100%;
    max-width: 580px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--card-shadow);
    animation: scaleUp 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.modal-container.modal-small {
    max-width: 400px;
}
.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
}
.btn-close-modal {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.8rem;
    cursor: pointer;
    line-height: 1;
}
.btn-close-modal:hover {
    color: var(--text-primary);
}
.modal-body {
    padding: 24px;
}
.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 15px;
}
.input-scanner-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}
.input-scanner-wrapper input {
    padding-left: 45px;
    padding-right: 50px;
}
.input-scanner-wrapper .btn {
    position: absolute;
    right: 5px;
    height: 34px;
    width: 34px;
    padding: 0;
    border-radius: 8px;
}
.input-help {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Image Upload Area */
.photo-upload-group {
    display: flex;
    flex-direction: column;
}
.image-upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    min-height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.01);
}
.image-upload-zone:hover {
    border-color: var(--color-primary);
    background-color: rgba(99, 102, 241, 0.02);
}
.upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}
.upload-icon {
    width: 32px;
    height: 32px;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.upload-placeholder small {
    color: var(--text-muted);
    font-size: 0.75rem;
}
.image-preview-container {
    position: relative;
    width: 100%;
    max-height: 200px;
    overflow: hidden;
    border-radius: var(--border-radius);
}
.image-preview-container img {
    width: 100%;
    max-height: 200px;
    object-fit: contain;
}
.btn-remove-image {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: var(--color-danger);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-speed) ease;
}
.btn-remove-image:hover {
    background-color: var(--color-danger-hover);
    transform: translateY(-1px);
}


/* Toast Alerts */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #1e293b;
    border: 1px solid var(--color-primary);
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 50px;
    z-index: 10000;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: fadeInUp 0.3s ease;
}
.toast.success {
    border-color: var(--color-success);
    background-color: #0f172a;
}
.toast.danger {
    border-color: var(--color-danger);
    background-color: #0f172a;
}

/* 9. Receipt Styles (Shared between On-Screen Preview and Print Area) */
.receipt-preview-box, .receipt-print-area {
    color: #000000 !important;
    font-family: 'Courier New', Courier, 'Prompt', monospace;
}

.receipt-preview-box h2, .receipt-print-area h2 {
    font-size: 1.25rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 6px;
    color: #000000 !important;
}

.receipt-preview-box p, .receipt-print-area p {
    font-size: 0.8rem;
    margin: 3px 0;
    color: #222222 !important;
    text-align: left;
}

.receipt-preview-box .text-center, .receipt-print-area .text-center {
    text-align: center !important;
}

.receipt-preview-box .divider, .receipt-print-area .divider {
    border-top: 1px dashed #000000;
    margin: 8px 0;
    height: 0;
}

.receipt-preview-box .info-row, .receipt-print-area .info-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    margin: 3px 0;
}

.receipt-preview-box .info-row span:first-child, .receipt-print-area .info-row span:first-child {
    color: #444444 !important;
}

.receipt-preview-box .info-row span:last-child, .receipt-print-area .info-row span:last-child {
    font-weight: 600;
    color: #000000 !important;
}

.receipt-preview-box .item-row-container, .receipt-print-area .item-row-container {
    margin: 8px 0;
}

.receipt-preview-box .item-name-row, .receipt-print-area .item-name-row {
    font-size: 0.85rem;
    font-weight: 600;
    text-align: left;
    color: #000000 !important;
    word-break: break-word;
}

.receipt-preview-box .item-details-row, .receipt-print-area .item-details-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    padding-left: 12px;
    margin-top: 2px;
}

.receipt-preview-box .item-qty-price, .receipt-print-area .item-qty-price {
    color: #555555 !important;
}

.receipt-preview-box .item-totals, .receipt-print-area .item-totals {
    font-weight: 600;
    color: #000000 !important;
    text-align: right;
}

.receipt-preview-box .summary-totals, .receipt-print-area .summary-totals {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    margin: 5px 0;
}

.receipt-preview-box .summary-totals span:first-child, .receipt-print-area .summary-totals span:first-child {
    color: #333333 !important;
}

.receipt-preview-box .summary-totals span:last-child, .receipt-print-area .summary-totals span:last-child {
    font-weight: 600;
    color: #000000 !important;
    text-align: right;
}

.receipt-preview-box .totals-bold, .receipt-print-area .totals-bold {
    font-weight: 700;
    font-size: 1rem;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dashed #000000;
}

.receipt-preview-box .totals-bold span:last-child, .receipt-print-area .totals-bold span:last-child {
    font-size: 1.15rem;
}

.receipt-preview-box .footer-note, .receipt-print-area .footer-note {
    text-align: center !important;
    font-size: 0.75rem;
    color: #444444 !important;
    margin-top: 12px;
    line-height: 1.4;
}

/* Specific styling for on-screen receipt preview box modal */
.receipt-preview-box {
    background-color: #ffffff;
    color: #000000;
    padding: 24px;
    border-radius: 12px;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.05);
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #e2e8f0;
}

/* ==========================================================================
   10. PRINT MEDIA STYLING (For 58mm POS thermal printers)
   ========================================================================== */
.receipt-print-area {
    display: none; /* Hide from standard display */
}

@media print {
    /* Hide all elements on page except print receipt */
    body * {
        visibility: hidden;
    }
    
    .receipt-print-area, .receipt-print-area * {
        visibility: visible;
    }
    
    .receipt-print-area {
        display: block !important;
        position: absolute;
        left: 0;
        top: 0;
        width: 58mm; /* Standard 58mm receipt paper */
        font-size: 9pt;
        line-height: 1.3;
        color: #000000;
        background-color: #ffffff;
        padding: 2mm;
        margin: 0;
        box-sizing: border-box;
    }
    
    /* Document Setup */
    @page {
        size: 58mm auto;
        margin: 0;
    }
    
    /* Font size adjustment for printing */
    .receipt-print-area h2 {
        font-size: 12pt;
    }
    .receipt-print-area p, .receipt-print-area .info-row, .receipt-print-area .item-qty-price, .receipt-print-area .footer-note {
        font-size: 8pt;
    }
    .receipt-print-area .item-name-row, .receipt-print-area .summary-totals {
        font-size: 9pt;
    }
    .receipt-print-area .totals-bold {
        font-size: 10pt;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes scaleUp {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

/* Hide mobile elements on desktop by default */
.pos-mobile-toggle {
    display: none;
}

/* ==========================================================================
   11. RESPONSIVE MOBILE OPTIMIZATIONS
   ========================================================================== */
@media (max-width: 1024px) {
    .pos-layout {
        grid-template-columns: 1fr;
        height: auto;
        overflow-y: visible;
    }
    .pos-cart-panel {
        height: auto;
        min-height: 500px;
    }
    .cart-items-wrapper {
        flex: 1;
    }
    .empty-cart-state {
        height: 100%;
        min-height: auto;
    }
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .reports-charts-row {
        grid-template-columns: minmax(0, 1fr);
        gap: 15px;
    }
    .chart-card {
        min-width: 0;
        width: 100%;
    }
}

@media (max-width: 768px) {
    /* เพิ่มระยะขอบล่างของหน้าเพื่อไม่ให้โดนเนวิเกชั่นบาร์ที่ฟิกไว้ด้านล่างบัง */
    body {
        padding-bottom: 75px !important;
    }

    /* จัดระเบียบเฮดเดอร์ด้านบนให้กะทัดรัด */
    .main-header {
        padding: 10px 15px;
        height: 60px;
        display: flex;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        position: sticky;
        top: 0;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    .header-logo h1 {
        font-size: 1.1rem;
    }
    
    .header-logo .badge {
        display: none; /* ซ่อนป้ายเพื่อประหยัดพื้นที่ */
    }

    /* การแสดงสถานะเครื่องสแกนในรูปแบบไอคอนกะทัดรัด */
    .scanner-status {
        padding: 6px;
        border-radius: 50%;
        margin-right: 100px; /* เว้นระยะไม่ให้ชนปุ่มเปลี่ยนธีมและปุ่มล็อกเอาต์ */
    }
    .scanner-status .status-text {
        display: none; /* ซ่อนข้อความยาวๆ */
    }

    /* ส่วนปุ่มการทำงานมุมขวาบน */
    .header-actions {
        position: absolute;
        top: 10px;
        right: 10px;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    #logout-btn {
        position: static;
        width: 40px;
        height: 40px;
        margin: 0;
    }

    /* แปลงเมนูนำทางหลักให้เป็นเนวิเกชั่นบาร์ติดขอบล่างแบบแอปมือถือ */
    .main-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background-color: var(--bg-secondary);
        border-top: 1px solid var(--border-color);
        display: flex;
        justify-content: space-around;
        align-items: center;
        padding: 6px 0;
        z-index: 999;
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.4);
    }

    .main-nav .nav-link {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        font-size: 0.7rem;
        gap: 2px;
        padding: 6px 5px;
        flex: 1;
        background: transparent;
        color: var(--text-secondary);
        border-radius: 0;
        height: auto;
    }

    .main-nav .nav-link.active {
        color: var(--color-primary);
        background: transparent;
        font-weight: 500;
    }
    
    .main-nav .nav-link.active::after {
        content: '';
        display: block;
        width: 12px;
        height: 2px;
        background-color: var(--color-primary);
        border-radius: 50px;
        margin-top: 2px;
    }

    .main-nav .nav-link i {
        width: 20px;
        height: 20px;
    }

    /* ลดระยะห่างรอบคอนเทนต์หลัก */
    .main-content {
        padding: 15px 12px;
    }

    /* โครงสร้าง POS บนมือถือ (สลับแท็บสินค้า/ตะกร้า) */
    .pos-layout {
        grid-template-columns: minmax(0, 1fr);
        height: auto;
        gap: 12px;
    }

    /* เมนูสวิตช์แท็บสินค้า/ตะกร้าบนหน้า POS */
    .pos-mobile-toggle {
        display: flex;
        background-color: var(--bg-secondary);
        border: 1px solid var(--border-color);
        border-radius: 30px;
        padding: 4px;
        gap: 4px;
        margin-bottom: 10px;
    }

    .pos-toggle-btn {
        flex: 1;
        font-family: var(--font-family);
        background: transparent;
        border: none;
        color: var(--text-secondary);
        padding: 10px;
        border-radius: 25px;
        cursor: pointer;
        font-weight: 500;
        font-size: 0.85rem;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        transition: all var(--transition-speed) ease;
    }

    .pos-toggle-btn.active {
        background-color: var(--color-primary-soft);
        color: var(--color-primary);
        font-weight: 600;
    }

    .pos-toggle-btn .badge-count {
        background-color: var(--color-primary);
        color: white;
        padding: 1px 6px;
        font-size: 0.7rem;
        border-radius: 50px;
        font-weight: 600;
    }

    /* ซ่อน/แสดงตามแท็บที่เลือก */
    .pos-layout.view-products .pos-cart-panel {
        display: none !important;
    }

    .pos-layout.view-cart .pos-products-panel {
        display: none !important;
    }

    .pos-layout.view-products .pos-products-panel {
        display: flex !important;
        flex-direction: column;
    }

    .pos-layout.view-cart .pos-cart-panel {
        display: flex !important;
        flex-direction: column;
        height: auto;
        min-height: 480px;
        padding: 15px;
    }

    /* ปรับแต่ง Grid สินค้าให้สวยงาม */
    .categories-scroll {
        padding-bottom: 6px;
        gap: 6px;
    }
    
    .category-btn {
        padding: 6px 14px;
        font-size: 0.8rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
        gap: 10px;
    }
    
    .product-card-img, .product-card-no-img {
        height: 100px;
    }

    .product-card-body {
        padding: 10px;
    }

    .product-card-name {
        font-size: 0.8rem;
        height: 2.8em;
        line-height: 1.3;
        margin-bottom: 6px;
    }

    .product-card-footer {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }

    .product-card-price {
        font-size: 0.95rem;
    }
    
    .product-card-stock {
        font-size: 0.7rem;
    }

    /* ปรับปรุงหน้าข้อมูลตัวชี้วัด (Reports Metrics) */
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        margin-bottom: 20px;
    }

    .metric-card {
        padding: 12px;
        gap: 10px;
        border-radius: 12px;
    }

    .metric-icon {
        width: 40px;
        height: 40px;
        border-radius: 8px;
    }

    .metric-icon i {
        width: 20px;
        height: 20px;
    }

    .metric-info h2 {
        font-size: 1.1rem;
    }

    .metric-label {
        font-size: 0.7rem;
        margin-bottom: 2px;
    }

    /* ส่วนฟิลเตอร์รายงานและส่งออกข้อมูล */
    .filters-row {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .date-picker-group {
        justify-content: space-between;
        width: 100%;
    }
    
    .input-date {
        flex: 1;
        max-width: none;
    }

    .quick-date-buttons {
        display: flex;
        justify-content: space-between;
        gap: 5px;
    }
    
    .quick-date-buttons .btn {
        flex: 1;
        font-size: 0.75rem;
        padding: 6px;
        white-space: nowrap;
    }

    .export-actions {
        width: 100%;
        display: flex;
        gap: 8px;
    }
    
    .export-actions .btn {
        flex: 1;
        font-size: 0.8rem;
        padding: 8px 10px;
    }

    /* ปรับแต่งคลังสินค้า (Inventory Controls & Table) */
    .inventory-controls {
        flex-direction: column;
        align-items: stretch;
        padding: 15px;
        gap: 10px;
    }

    .controls-left {
        flex-direction: column;
        gap: 8px;
    }
    
    .controls-left .search-input-wrapper {
        max-width: none;
    }

    .controls-left .select-modern {
        width: 100%;
    }

    .controls-right {
        display: flex;
        gap: 8px;
    }
    
    .controls-right .btn {
        flex: 1;
        font-size: 0.8rem;
        padding: 8px;
        white-space: nowrap;
    }

    /* ปรับแต่งตารางคลังสินค้าสำหรับสกรีนเล็ก */
    .table th, .table td {
        padding: 10px;
        font-size: 0.8rem;
    }
    
    .table-product-img, .table-product-no-img {
        width: 40px;
        height: 40px;
    }

    /* โมดอลแบบเต็มหน้าจอหรือแบบก้นกระเป๋าสำหรับมือถือ (Bottom-Sheet style) */
    .modal-container {
        width: 95% !important;
        max-height: 85vh;
        margin: auto;
        border-radius: 16px;
    }
    
    .modal-body {
        padding: 15px;
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .fast-cash-buttons {
        gap: 4px;
    }

    .btn-fast-cash {
        padding: 6px;
        font-size: 0.7rem;
        min-width: 40px;
    }
}

@media (max-width: 480px) {
    /* สำหรับมือถือขนาดเล็กเป็นพิเศษ */
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(115px, 1fr));
        gap: 8px;
    }
    
    .product-card-img, .product-card-no-img {
        height: 85px;
    }
    
    .promptpay-qrcode-container img {
        width: 120px;
        height: 120px;
    }
}

/* ==========================================================================
   12. MOBILE CARD VIEWS & VISIBILITY UTILITIES
   ========================================================================== */

/* Desktop-only / Mobile-only visibility */
.mobile-only {
    display: none !important;
}

@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
    .mobile-only {
        display: block !important;
    }
    
    /* ซ่อนกล่องสแกนเนอร์และการ์ดคำแนะนำบน mobile เพื่อประหยัดพื้นที่ */
    .scanner-hook-box {
        display: none !important;
    }
    .pos-tip-card {
        display: none !important;
    }
}

/* --- Mobile Card List Container --- */
.mobile-card-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* --- Mobile Empty State --- */
.mobile-empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}
.mobile-empty-state i {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.4;
}
.mobile-empty-state p {
    font-size: 0.9rem;
}

/* --- Mobile Section Header --- */
.mobile-section-header {
    padding: 12px 4px 8px;
}
.mobile-section-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ==========================================================================
   13. INVENTORY MOBILE CARD STYLES
   ========================================================================== */
.inv-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 14px;
    transition: border-color 0.2s ease;
}
.inv-card:active {
    border-color: var(--color-primary);
}

/* Card Top Row: image + info + badge */
.inv-card-top {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}
.inv-card-img {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    object-fit: cover;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}
.inv-card-no-img {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    flex-shrink: 0;
}
.inv-card-no-img i {
    width: 20px;
    height: 20px;
}
.inv-card-info {
    flex: 1;
    min-width: 0;
}
.inv-card-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
}
.inv-card-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Card Bottom: Prices + Actions */
.inv-card-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.inv-card-prices {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.inv-price-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}
.inv-price-label strong {
    font-weight: 600;
    color: var(--text-primary);
}
.inv-price-label.text-success strong {
    color: var(--color-success);
}
.inv-stock-label {
    flex-basis: 100%;
}
.inv-card-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}
.inv-card-actions .btn {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    padding: 6px 10px;
}

/* ==========================================================================
   14. TRANSACTION MOBILE CARD STYLES
   ========================================================================== */
.txn-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 14px;
    transition: border-color 0.2s ease;
}
.txn-card:active {
    border-color: var(--color-primary);
}

/* Card Header: bill ID + time + payment badge */
.txn-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}
.txn-card-id {
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--color-primary);
    margin-bottom: 2px;
}
.txn-card-time {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* Items chips */
.txn-card-items {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 12px;
}
.txn-item-chip {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    padding: 3px 8px;
    border-radius: 20px;
    font-size: 0.72rem;
    white-space: nowrap;
}

/* Card Footer: amounts + receipt button */
.txn-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.txn-card-amounts {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    font-size: 0.75rem;
    color: var(--text-secondary);
}
.txn-card-amounts strong {
    font-weight: 600;
    color: var(--text-primary);
}
.txn-card-footer .btn {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    padding: 6px 10px;
    flex-shrink: 0;
}

/* --- Light Mode Special Overrides --- */
body.light-mode .login-header h2 {
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.light-mode .table th {
    background-color: rgba(84, 78, 71, 0.03);
}

body.light-mode .table tbody tr:hover {
    background-color: rgba(84, 78, 71, 0.04);
}

body.light-mode .cart-item {
    border-bottom: 1px solid rgba(84, 78, 71, 0.08);
}

body.light-mode .inv-card-bottom {
    border-top: 1px solid rgba(84, 78, 71, 0.08);
}

body.light-mode .txn-card-bottom {
    border-top: 1px solid rgba(84, 78, 71, 0.08);
}

body.light-mode .txn-item-chip {
    background-color: rgba(84, 78, 71, 0.04);
    border: 1px solid rgba(84, 78, 71, 0.08);
}

body.light-mode .txn-card-footer {
    border-top: 1px solid rgba(84, 78, 71, 0.08);
}

body.light-mode .change-row {
    border-top: 1px dashed rgba(84, 78, 71, 0.15);
}

body.light-mode ::-webkit-scrollbar-thumb {
    background: #d2c8b6; /* Warm beige-gray scrollbar */
}

body.light-mode ::-webkit-scrollbar-thumb:hover {
    background: #b9ae9b; /* Slightly darker warm beige-gray */
}

/* Dropdown styling inside transactions table */
.select-table-payment {
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.8rem;
    font-family: var(--font-family);
    cursor: pointer;
    outline: none;
    width: auto;
    display: inline-block;
    transition: all var(--transition-speed) ease;
}
.select-table-payment:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-soft);
}
body.light-mode .select-table-payment {
    background-color: #ffffff;
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* สีพื้นหลังเฉพาะของตัวเลือกช่องทางชำระเงิน */
.select-table-payment.pay-cash {
    background-color: var(--color-success-soft) !important;
    color: var(--color-success) !important;
    border-color: rgba(16, 185, 129, 0.3) !important;
}
.select-table-payment.pay-tct {
    background-color: var(--color-warning-soft) !important;
    color: var(--color-warning) !important;
    border-color: rgba(245, 158, 11, 0.3) !important;
}
.select-table-payment.pay-welfare {
    background-color: var(--color-primary-soft) !important;
    color: var(--color-primary) !important;
    border-color: rgba(99, 102, 241, 0.3) !important;
}
.select-table-payment.pay-qrcode {
    background-color: var(--color-info-soft) !important;
    color: var(--color-info) !important;
    border-color: rgba(6, 182, 212, 0.3) !important;
}

/* คลาสเพื่อไม่ให้ option ใน dropdown ใช้สีพื้นหลังและสีตัวอักษรของ select ตัวหลัก */
.select-table-payment option {
    background-color: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}