/* ============================================================
   QR Menu System - Main Styles
   ============================================================ */

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --info-color: #17a2b8;
    --light-bg: #f8f9fa;
    --dark-bg: #343a40;
    --border-color: #e9ecef;
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 5px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --border-radius: 10px;
    --transition: all 0.3s ease;
}

/* ============================================================
   General Styles
   ============================================================ */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f6f9;
    min-height: 100vh;
    color: #2c3e50;
    padding-bottom: 60px;
}

a {
    text-decoration: none;
    color: var(--secondary-color);
    transition: var(--transition);
}

a:hover {
    color: #2176ae;
}

/* ============================================================
   Scrollbar Styling
   ============================================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #c1c7cd;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8b0b8;
}

/* ============================================================
   Typography
   ============================================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: #2c3e50;
}

.text-muted {
    color: #7f8c8d !important;
}

/* ============================================================
   Card Styles
   ============================================================ */

.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    margin-bottom: 20px;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.card-header {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-bottom: 2px solid var(--border-color);
    padding: 18px 25px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.card-header h4, .card-header h5, .card-header h6 {
    margin: 0;
}

.card-body {
    padding: 25px;
}

.card-footer {
    background: #f8f9fa;
    border-top: 1px solid var(--border-color);
    padding: 15px 25px;
}

/* ============================================================
   Badge Styles
   ============================================================ */

.badge {
    padding: 6px 12px;
    font-weight: 500;
    border-radius: 50px;
    font-size: 0.75rem;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-info {
    background: #d1ecf1;
    color: #0c5460;
}

.badge-primary {
    background: #cce5ff;
    color: #004085;
}

.badge-secondary {
    background: #e2e3e5;
    color: #383d41;
}

.badge-lg {
    padding: 10px 18px;
    font-size: 0.9rem;
}

.badge-pulse {
    animation: pulse 2s infinite;
}

/* ============================================================
   Button Styles
   ============================================================ */

.btn {
    border-radius: 8px;
    padding: 10px 20px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color), #2980b9);
    border: none;
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #229954);
    border: none;
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.4);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #c0392b);
    border: none;
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #e67e22);
    border: none;
    color: white;
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(243, 156, 18, 0.4);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, var(--info-color), #138496);
    border: none;
    color: white;
}

.btn-info:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(23, 162, 184, 0.4);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, #6c757d, #5a6268);
    border: none;
    color: white;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(108, 117, 125, 0.4);
    color: white;
}

.btn-dark {
    background: linear-gradient(135deg, #343a40, #23272b);
    border: none;
    color: white;
}

.btn-dark:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 58, 64, 0.4);
    color: white;
}

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

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

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

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.1rem;
}

.btn:active {
    transform: scale(0.95) !important;
}

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

/* ============================================================
   Form Styles
   ============================================================ */

.form-control {
    border-radius: 8px;
    border: 2px solid var(--border-color);
    padding: 12px 15px;
    transition: var(--transition);
    font-size: 0.95rem;
}

.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.form-control.is-invalid {
    border-color: var(--danger-color);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 0.2rem rgba(231, 76, 60, 0.25);
}

.form-label {
    font-weight: 500;
    color: #2c3e50;
    margin-bottom: 8px;
}

.form-label.required::after {
    content: ' *';
    color: var(--danger-color);
}

.form-text {
    color: #7f8c8d;
    font-size: 0.85rem;
}

.input-group-text {
    background: #f8f9fa;
    border: 2px solid var(--border-color);
    border-right: none;
    color: #6c757d;
}

.input-group .form-control {
    border-left: none;
}

.input-group .form-control:focus {
    border-color: var(--secondary-color);
}

.input-group .form-control:focus + .input-group-text {
    border-color: var(--secondary-color);
}

/* ============================================================
   Navbar Styles
   ============================================================ */

.navbar {
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
    padding: 12px 0;
    background: linear-gradient(135deg, #2c3e50, #34495e) !important;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: white !important;
}

.navbar-brand i {
    margin-right: 10px;
    color: var(--secondary-color);
}

.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    padding: 8px 16px;
    border-radius: 8px;
    transition: var(--transition);
}

.navbar-dark .navbar-nav .nav-link:hover {
    color: white !important;
    background: rgba(255, 255, 255, 0.1);
}

.navbar-dark .navbar-nav .nav-link i {
    margin-right: 6px;
}

.navbar .badge {
    position: relative;
    top: -8px;
    margin-left: 5px;
}

.dropdown-menu {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 8px;
}

.dropdown-item {
    border-radius: 6px;
    padding: 8px 16px;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: #f1f3f5;
}

.dropdown-item i {
    width: 20px;
    margin-right: 8px;
}

/* ============================================================
   Dashboard Stats
   ============================================================ */

.stat-card {
    padding: 25px 20px;
    border-radius: var(--border-radius);
    background: white;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: default;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.stat-card .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    color: #2c3e50;
}

.stat-card .stat-label {
    color: #7f8c8d;
    font-weight: 500;
    margin-top: 5px;
    font-size: 0.95rem;
}

.stat-card.text-primary .stat-icon { color: var(--secondary-color); }
.stat-card.text-success .stat-icon { color: var(--success-color); }
.stat-card.text-warning .stat-icon { color: var(--warning-color); }
.stat-card.text-danger .stat-icon { color: var(--danger-color); }
.stat-card.text-info .stat-icon { color: var(--info-color); }

/* ============================================================
   Login/Register Page
   ============================================================ */

.auth-container {
    max-width: 440px;
    margin: 60px auto;
}

.auth-container .card {
    border: none;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

.auth-container .card-body {
    padding: 40px;
}

.auth-container .logo {
    text-align: center;
    margin-bottom: 30px;
}

.auth-container .logo i {
    font-size: 3.5rem;
    color: var(--secondary-color);
}

.auth-container .logo h3 {
    margin-top: 10px;
    color: #2c3e50;
    font-weight: 700;
}

.auth-container .logo p {
    color: #7f8c8d;
    margin-top: 5px;
}

/* ============================================================
   Menu Viewer
   ============================================================ */

.menu-viewer {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.menu-viewer .restaurant-header {
    text-align: center;
    padding: 40px 30px;
    background: white;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-sm);
}

.menu-viewer .restaurant-logo {
    max-width: 150px;
    max-height: 150px;
    width: auto;
    height: auto;
    border-radius: 50%;
    margin-bottom: 15px;
    object-fit: cover;
    border: 4px solid var(--border-color);
}

.menu-viewer .restaurant-name {
    font-size: 2rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 5px;
}

.menu-viewer .restaurant-details {
    color: #7f8c8d;
}

.menu-viewer .restaurant-details i {
    margin-right: 8px;
    color: var(--secondary-color);
}

.menu-viewer .category-section {
    margin-bottom: 35px;
    background: white;
    border-radius: 15px;
    padding: 20px 25px;
    box-shadow: var(--shadow-sm);
}

.menu-viewer .category-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
    border-bottom: 3px solid var(--secondary-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.menu-viewer .category-title .badge {
    font-size: 0.8rem;
}

.menu-viewer .menu-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 15px 0;
    border-bottom: 1px solid #f1f3f5;
    transition: var(--transition);
}

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

.menu-viewer .menu-item:hover {
    background: #f8f9fa;
    margin: 0 -10px;
    padding-left: 10px;
    padding-right: 10px;
    border-radius: 8px;
}

.menu-viewer .item-info {
    flex: 1;
}

.menu-viewer .item-name {
    font-weight: 600;
    color: #2c3e50;
    font-size: 1.05rem;
}

.menu-viewer .item-description {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-top: 3px;
}

.menu-viewer .item-price {
    font-weight: 700;
    color: var(--secondary-color);
    font-size: 1.1rem;
    white-space: nowrap;
    margin-left: 20px;
    min-width: 80px;
    text-align: right;
}

.menu-viewer .item-unavailable {
    opacity: 0.5;
}

.menu-viewer .item-unavailable .item-name::after {
    content: ' (Unavailable)';
    font-size: 0.8rem;
    color: var(--danger-color);
    font-weight: normal;
}

/* ============================================================
   Admin Button (on menu viewer)
   ============================================================ */

.admin-button {
    position: fixed;
    bottom: 25px;
    right: 25px;
    z-index: 1000;
}

.admin-button .btn {
    border-radius: 50px;
    padding: 14px 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    font-weight: 600;
    background: linear-gradient(135deg, #2c3e50, #34495e);
    border: none;
    color: white;
}

.admin-button .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

.admin-button .btn i {
    margin-right: 8px;
}

/* ============================================================
   Loading Spinner
   ============================================================ */

.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* ============================================================
   Image Preview
   ============================================================ */

.image-preview {
    max-width: 200px;
    max-height: 200px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    padding: 5px;
    margin-top: 10px;
    object-fit: cover;
}

/* ============================================================
   Toast Notifications
   ============================================================ */

.toast-container {
    z-index: 1050;
}

.toast {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
}

.toast-header {
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    padding: 12px 20px;
}

.toast-header.bg-success {
    background: var(--success-color) !important;
}

.toast-header.bg-danger {
    background: var(--danger-color) !important;
}

.toast-header.bg-warning {
    background: var(--warning-color) !important;
}

.toast-header.bg-info {
    background: var(--info-color) !important;
}

.toast-body {
    padding: 15px 20px;
}

/* ============================================================
   Animations
   ============================================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.6; }
    100% { opacity: 1; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

.slide-in {
    animation: slideIn 0.4s ease;
}

.pulse {
    animation: pulse 2s infinite;
}

/* ============================================================
   Responsive Styles
   ============================================================ */

/* Mobile First Approach */
@media (max-width: 768px) {
    .auth-container {
        margin: 30px 15px;
    }
    
    .auth-container .card-body {
        padding: 25px;
    }
    
    .menu-viewer {
        padding: 10px;
    }
    
    .menu-viewer .restaurant-header {
        padding: 25px 15px;
    }
    
    .menu-viewer .restaurant-name {
        font-size: 1.5rem;
    }
    
    .menu-viewer .menu-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .menu-viewer .item-price {
        margin-left: 0;
        margin-top: 5px;
        width: 100%;
        text-align: left;
    }
    
    .menu-viewer .category-section {
        padding: 15px;
    }
    
    .stat-card .stat-number {
        font-size: 2rem;
    }
    
    .card-header {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
    
    .card-header .btn-group {
        width: 100%;
    }
    
    .admin-button {
        bottom: 15px;
        right: 15px;
    }
    
    .admin-button .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
    .stat-card .stat-number {
        font-size: 2.2rem;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .admin-button,
    .btn,
    .no-print {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
        break-inside: avoid;
    }
    
    .menu-viewer .restaurant-header {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}

/* ============================================================
   Utility Classes
   ============================================================ */

.text-primary-custom { color: var(--secondary-color); }
.text-success-custom { color: var(--success-color); }
.text-warning-custom { color: var(--warning-color); }
.text-danger-custom { color: var(--danger-color); }

.bg-gradient-primary { background: linear-gradient(135deg, var(--secondary-color), #2980b9); }
.bg-gradient-success { background: linear-gradient(135deg, var(--success-color), #229954); }
.bg-gradient-danger { background: linear-gradient(135deg, var(--danger-color), #c0392b); }
.bg-gradient-warning { background: linear-gradient(135deg, var(--warning-color), #e67e22); }

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

.shadow-hover {
    transition: var(--transition);
}

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

.rounded-10 { border-radius: 10px; }
.rounded-15 { border-radius: 15px; }

.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }

/* ============================================================
   Table Styles
   ============================================================ */

.table {
    margin-bottom: 0;
}

.table thead th {
    background: #f8f9fa;
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
    color: #2c3e50;
    padding: 12px 15px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table tbody td {
    padding: 12px 15px;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.table tbody tr:hover {
    background: #f8f9fa;
}

.table .btn-group {
    gap: 3px;
}

.table .btn-group .btn {
    padding: 5px 10px;
    font-size: 0.8rem;
}

/* ============================================================
   Sortable/Drag & Drop Styles
   ============================================================ */

.sortable-item {
    cursor: move;
    transition: var(--transition);
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 5px;
    background: white;
    border: 1px solid var(--border-color);
}

.sortable-item:hover {
    background: #f8f9fa;
    border-color: var(--secondary-color);
}

.sortable-item.dragging {
    opacity: 0.5;
    background: #e9ecef;
}

.sortable-placeholder {
    background: #f1f3f5;
    border: 2px dashed var(--secondary-color);
    border-radius: 8px;
    height: 50px;
    margin: 5px 0;
}

.drag-handle {
    cursor: move;
    color: #ccc;
    transition: var(--transition);
}

.drag-handle:hover {
    color: var(--secondary-color);
}

.category-header {
    padding: 10px 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 10px;
}

.category-header h6 {
    margin: 0;
}

/* ============================================================
   Modal Styles
   ============================================================ */

.modal-content {
    border: none;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 2px solid var(--border-color);
    padding: 20px 25px;
}

.modal-header .modal-title {
    font-weight: 600;
}

.modal-body {
    padding: 25px;
}

.modal-footer {
    border-top: 2px solid var(--border-color);
    padding: 15px 25px;
}

/* ============================================================
   Custom Checkbox Toggle (Switch)
   ============================================================ */

.form-switch .form-check-input {
    width: 2.5em;
    height: 1.3em;
    cursor: pointer;
}

.form-switch .form-check-input:checked {
    background-color: var(--success-color);
    border-color: var(--success-color);
}

/* ============================================================
   Empty State
   ============================================================ */

.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state i {
    font-size: 4rem;
    color: #ddd;
}

.empty-state h5 {
    margin-top: 20px;
    color: #2c3e50;
}

.empty-state p {
    color: #7f8c8d;
    max-width: 400px;
    margin: 10px auto 20px;
}

/* ============================================================
   File Upload Area
   ============================================================ */

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px 20px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--secondary-color);
    background: #f8f9fa;
}

.upload-area.dragover {
    border-color: var(--secondary-color);
    background: #e3f2fd;
}

.upload-area i {
    font-size: 3rem;
    color: #ccc;
}

/* ============================================================
   Footer
   ============================================================ */

.footer {
    background: white;
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    margin-top: 40px;
    position: fixed;
    bottom: 0;
    width: 100%;
    z-index: 100;
}

/* ============================================================
   Miscellaneous
   ============================================================ */

hr {
    border-color: var(--border-color);
    opacity: 0.5;
    margin: 25px 0;
}

.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 15px 20px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
}

.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* QR Code Display */
.qr-code-container {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
}

.qr-code-container img {
    max-width: 200px;
    height: auto;
}

/* Responsive Table */
@media (max-width: 768px) {
    .table-responsive {
        font-size: 0.85rem;
    }
    
    .table .btn-group {
        display: flex;
        flex-wrap: wrap;
        gap: 3px;
    }
    
    .table .btn-group .btn {
        padding: 4px 8px;
        font-size: 0.75rem;
    }
}