/* Modern CSS Variables & Theme - Bootstrap Edition */
:root {
    /* Bootstrap Color Palette */
    --primary-color: #0d6efd;
    --primary-hover: #0b5ed7;
    --primary-light: #6ea8fe;
    --secondary-color: #6c757d;
    --secondary-hover: #5c636a;
    --accent-color: #ffc107;
    --success-color: #198754;
    --success-hover: #157347;
    --info-color: #0dcaf0;
    --info-hover: #0aa2c0;
    --warning-color: #ffc107;
    --warning-hover: #ffca2c;
    --danger-color: #dc3545;
    --danger-hover: #bb2d3b;
    
    /* Neutrals */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-light: #adb5bd;
    --border-color: #dee2e6;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* POS visual refresh */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #60a5fa;
    --bg-secondary: #f3f6fb;
    --bg-tertiary: #e9eef6;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --bs-primary: #2563eb;
    --bs-primary-dark: #1d4ed8;
    --bs-primary-light: #93c5fd;
}

/* Base Styles */
html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

* {
    transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

/* Modern Card Styles */
.card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    border-bottom: none;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    font-weight: 600;
}

.card-body {
    padding: var(--spacing-lg);
}

/* Modern Button Styles */
.btn {
    border-radius: var(--radius-md);
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, var(--success-hover) 100%);
    color: white;
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--success-hover) 0%, var(--success-color) 100%);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, var(--danger-hover) 100%);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--danger-hover) 0%, var(--danger-color) 100%);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, var(--warning-hover) 100%);
    color: #000;
}

.btn-outline-primary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
}

/* Glass Morphism Effect */
.glass-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-lg);
}

/* Modern Form Controls */
.form-control, .form-select {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.625rem 0.875rem;
    transition: all var(--transition-base);
    background: var(--bg-primary);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    outline: none;
}


/* Custom Scrollbar */
.product-list::-webkit-scrollbar,
.order-item-list::-webkit-scrollbar,
.open-order-item-list::-webkit-scrollbar {
    width: 8px;
}

.product-list::-webkit-scrollbar-track,
.order-item-list::-webkit-scrollbar-track,
.open-order-item-list::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
}

.product-list::-webkit-scrollbar-thumb,
.order-item-list::-webkit-scrollbar-thumb,
.open-order-item-list::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    transition: background var(--transition-base);
}

.product-list::-webkit-scrollbar-thumb:hover,
.order-item-list::-webkit-scrollbar-thumb:hover,
.open-order-item-list::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Product Card Enhancements */
.product-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, rgba(99, 102, 241, 0.05) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.product-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.product-card:hover::before {
    opacity: 1;
}

/* Badge Styles */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.025em;
}

.badge-primary {
    background: var(--primary-color);
    color: white;
}

.badge-success {
    background: var(--success-color);
    color: white;
}

.badge-warning {
    background: var(--warning-color);
    color: #000;
}

.badge-danger {
    background: var(--danger-color);
    color: white;
}

/* Modal Enhancements */
.modal-content {
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) var(--spacing-xl);
}

.modal-header-error {
    background: linear-gradient(135deg, var(--danger-color) 0%, var(--danger-hover) 100%);
    color: white;
    border-bottom: none;
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--bg-secondary);
}

/* Loading Spinner */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.spinner {
    animation: spin 1s linear infinite;
}

/* Pulse Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Smooth Fade In */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

/* Payment Type Buttons */
.btn-payment-type {
    height: 250px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: 1.125rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}

.btn-payment-type:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    color: white;
    transform: scale(1.02);
}

/* Action Buttons */
.btn-action-home {
    width: 200px;
    height: 60px;
    font-size: 1.125rem;
    font-weight: 600;
}

/* Order Type Buttons */
.btn-order-type {
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
}

/* Bottom Action Buttons */
.bottom-action-buttons {
    position: fixed;
    bottom: 5px;
    background: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Top Bar Title */
.top-bar-title {
    position: fixed;
    top: 0;
    z-index: 999;
    align-items: center;
    justify-content: center;
    height: 3.5rem;
    display: flex;
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

/* Table Styles */
.table {
    border-collapse: separate;
    border-spacing: 0;
}

.table thead th {
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    padding: var(--spacing-md);
}

.table tbody tr {
    transition: all var(--transition-base);
}

.table tbody td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

/* Utility Classes */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

/* Notification Toast */
.toast {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
    min-height: 7rem;
    font-size: 1.15rem;
}

.toast .toast-body {
    padding: 1.5rem 1.75rem;
}

.toast .toast-body .fw-semibold {
    font-size: 1.35rem;
    letter-spacing: 0.02em;
}

.toast .btn-close {
    transform: scale(1.25);
}

.toast-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.95) 0%, rgba(5, 150, 105, 0.95) 100%);
    color: white;
}

.toast-error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.95) 0%, rgba(220, 38, 38, 0.95) 100%);
    color: white;
}

.toast-info {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.95) 0%, rgba(79, 70, 229, 0.95) 100%);
    color: white;
}

/* Cart Enhancements */
.cart-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-base);
}

.cart-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

/* Opt-in display heading. Keep Bootstrap heading elements layout-neutral. */
.surface-heading {
    font-weight: 700;
    color: var(--text-primary);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

/* Order Type Radio Buttons Enhancement */
.btn-check:checked + .btn-outline-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-color: var(--primary-color);
    color: white;
}

.btn-check:checked + .btn-outline-success {
    background: linear-gradient(135deg, var(--success-color) 0%, var(--success-hover) 100%);
    border-color: var(--success-color);
    color: white;
}

.btn-check:checked + .btn-outline-secondary {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%);
    border-color: #64748b;
    color: white;
}

/* Hover states for order type buttons */
.btn-outline-primary:hover {
    background: var(--primary-light);
    color: white;
    transform: scale(1.05);
}

.btn-outline-success:hover {
    background: var(--success-color);
    color: white;
    transform: scale(1.05);
}

.btn-outline-secondary:hover {
    background: #64748b;
    color: white;
    transform: scale(1.05);
}

/* Shimmer loading effect */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.shimmer {
    background: linear-gradient(90deg, var(--bg-secondary) 0%, var(--bg-tertiary) 50%, var(--bg-secondary) 100%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite linear;
}

/* Enhanced Input Fields */
input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
input[type="tel"],
textarea {
    transition: all var(--transition-base);
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
textarea:focus {
    transform: translateY(-2px);
}

/* Opt-in status messages. Bootstrap text utilities must not alter layout. */
.status-message.text-danger {
    color: var(--danger-color) !important;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(239, 68, 68, 0.1);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--danger-color);
    margin: var(--spacing-sm) 0;
}

.status-message.text-success {
    color: var(--success-color) !important;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(25, 135, 84, 0.1);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--success-color);
    margin: var(--spacing-sm) 0;
}

/* Slide in from right animation */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight var(--transition-base) ease-out;
}

/* Bounce animation for buttons */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

.bounce-on-hover:hover {
    animation: bounce 0.5s ease;
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* Enhanced Loading Spinner Component */
.loading-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Responsive Improvements */
@media (max-width: 768px) {
    .card-header {
        padding: var(--spacing-md);
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .btn-action-home {
        width: 100%;
    }
    
    .btn-payment-type {
        height: 180px;
        font-size: 1rem;
    }
    
    h5 {
        font-size: 1.25rem;
    }
}

/* Focus Styles */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Selection Styles */
::selection {
    background: var(--primary-light);
    color: white;
}

::-moz-selection {
    background: var(--primary-light);
    color: white;
}