:root {
    --primary-color: #6f42c1;
    --secondary-color: #fd7e14;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --dark-color: #343a40;
    --light-color: #f8f9fa;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    min-height: 100vh;
}

/* Auth Pages */
.auth-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-page .card {
    border-radius: 15px;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    min-height: 100vh;
    background: linear-gradient(180deg, #2c3e50 0%, #34495e 100%);
    color: white;
    position: fixed;
    top: 0;
    right: 0;
    width: 250px;
    padding: 20px 0;
    box-shadow: -2px 0 10px rgba(0,0,0,0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.sidebar .logo {
    text-align: center;
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 20px;
}

.sidebar .logo i {
    font-size: 2.5rem;
    color: var(--secondary-color);
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.8);
    padding: 12px 25px;
    margin: 5px 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background-color: rgba(255,255,255,0.1);
    color: white;
}

.sidebar .nav-link i {
    margin-left: 10px;
    font-size: 1.2rem;
}

/* Main Content */
.main-content {
    margin-right: 250px;
    padding: 20px;
    min-height: 100vh;
    transition: all 0.3s ease;
}

/* Top Navbar */
.top-navbar {
    background: white;
    padding: 15px 25px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-navbar h4 {
    margin: 0;
    color: var(--dark-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

/* Stats Cards */
.stats-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-right: 4px solid;
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.stats-card.primary {
    border-color: var(--primary-color);
}

.stats-card.success {
    border-color: var(--success-color);
}

.stats-card.warning {
    border-color: var(--warning-color);
}

.stats-card.danger {
    border-color: var(--danger-color);
}

.stats-card .icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.stats-card.primary .icon {
    background: rgba(111, 66, 193, 0.1);
    color: var(--primary-color);
}

.stats-card.success .icon {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
}

.stats-card.warning .icon {
    background: rgba(255, 193, 7, 0.1);
    color: var(--warning-color);
}

.stats-card.danger .icon {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
}

.stats-card h3 {
    font-size: 2rem;
    font-weight: bold;
    margin: 10px 0;
}

.stats-card p {
    color: #6c757d;
    margin: 0;
}

/* Tables */
.table-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.table-card .card-header {
    background: transparent;
    border: none;
    padding: 0 0 20px 0;
}

.table {
    margin: 0;
}

.table thead th {
    background-color: #f8f9fa;
    border: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    padding: 15px;
    color: #6c757d;
}

.table tbody td {
    padding: 15px;
    vertical-align: middle;
}

/* Badges */
.badge {
    padding: 6px 12px;
    font-weight: 500;
    border-radius: 6px;
}

.badge-pending {
    background-color: #ffc107;
    color: #000;
}

.badge-preparing {
    background-color: #17a2b8;
    color: white;
}

.badge-ready {
    background-color: #28a745;
    color: white;
}

.badge-delivered {
    background-color: #6c757d;
    color: white;
}

.badge-cancelled {
    background-color: #dc3545;
    color: white;
}

/* Buttons */
.btn {
    border-radius: 8px;
    padding: 10px 20px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    border: none;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #38c172);
    border: none;
}

/* Menu Items (for Server) */
.menu-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    cursor: pointer;
}

.menu-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.menu-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.menu-item-body {
    padding: 15px;
}

.menu-item h5 {
    margin: 0 0 10px 0;
    color: var(--dark-color);
}

.menu-item .price {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Order Card */
.order-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 20px;
    border-right: 4px solid;
}

.order-card.pending {
    border-color: #ffc107;
}

.order-card.preparing {
    border-color: #17a2b8;
}

.order-card.ready {
    border-color: #28a745;
}

.order-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e9ecef;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 200px;
        transform: translateX(100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-right: 0;
    }
    
    .menu-toggle {
        display: block;
        position: fixed;
        top: 20px;
        right: 20px;
        z-index: 1001;
        background: var(--primary-color);
        color: white;
        border: none;
        padding: 10px 15px;
        border-radius: 8px;
    }
}

@media (min-width: 769px) {
    .menu-toggle {
        display: none;
    }
}

/* Loading */
.loading {
    text-align: center;
    padding: 50px;
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state i {
    font-size: 4rem;
    color: #dee2e6;
    margin-bottom: 20px;
}

.empty-state h4 {
    color: #6c757d;
    margin-bottom: 10px;
}

.empty-state p {
    color: #adb5bd;
}

/* Notification Badge */
.notification-badge {
    position: relative;
}

.notification-badge .badge {
    position: absolute;
    top: -8px;
    left: -8px;
    padding: 4px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
}

/* Category Tabs */
.category-tabs {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 10px 0;
    margin-bottom: 20px;
}

.category-tabs::-webkit-scrollbar {
    height: 5px;
}

.category-tabs::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

.category-tab {
    padding: 10px 20px;
    border-radius: 20px;
    background: white;
    border: 2px solid #e9ecef;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.category-tab:hover,
.category-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* PWA Install Banner */
.install-banner {
    position: fixed;
    bottom: 20px;
    right: 20px;
    left: 20px;
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 5px 25px rgba(0,0,0,0.2);
    z-index: 1000;
    display: none;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.install-banner.show {
    display: block;
}