/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

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

.logo-placeholder {
    width: 80px;
    height: 80px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
    font-weight: bold;
}

.logo-section h1 {
    color: var(--text-primary);
    font-size: 28px;
    margin-bottom: 5px;
}

.logo-section p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-form {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.error-message {
    color: var(--danger-color);
    font-size: 14px;
    margin-top: 10px;
    display: none;
}

.error-message.show {
    display: block;
}

.demo-accounts {
    background: #f1f5f9;
    padding: 15px;
    border-radius: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.demo-accounts p {
    margin-bottom: 5px;
}

/* Header */
.main-header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-section .logo-placeholder {
    width: 50px;
    height: 50px;
    margin: 0;
}

.logo-section h1 {
    font-size: 24px;
    margin: 0;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-link {
    padding: 8px 16px;
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: 6px;
    transition: all 0.3s;
    font-size: 14px;
}

.nav-link:hover {
    background: #f1f5f9;
    color: var(--text-primary);
}

.nav-link.active {
    background: var(--primary-color);
    color: white;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

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

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

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

.btn-secondary:hover {
    background: #475569;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-large {
    padding: 12px 30px;
    font-size: 16px;
}

/* Main Content */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.page-header h2 {
    font-size: 28px;
    color: var(--text-primary);
}

.welcome-text {
    color: var(--text-secondary);
    margin-top: 10px;
}

/* Dashboard Stats */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
}

.stat-card h3 {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Quick Actions */
.quick-actions {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.quick-actions h3 {
    margin-bottom: 20px;
    font-size: 20px;
}

.action-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.action-buttons-section {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.category-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    position: relative;
}

.category-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.category-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.category-actions button {
    flex: 1;
}

/* Items Container */
.items-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.item-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.item-card h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.item-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    font-size: 14px;
    color: var(--text-secondary);
}

.item-actions {
    display: flex;
    gap: 10px;
}

.item-actions button {
    flex: 1;
}

/* Filter Section */
.filter-section {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
    display: flex;
    gap: 15px;
    align-items: end;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.category-filter-section {
    margin-bottom: 25px;
    display: flex;
    gap: 15px;
    align-items: center;
}

/* Inventory Selection */
.categories-inventory {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.category-inventory-section {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.category-inventory-section h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.inventory-item {
    background: #f8fafc;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.inventory-item-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 15px;
}

.inventory-item-name {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
}

.inventory-item-unit {
    font-size: 12px;
    color: var(--text-secondary);
    background: white;
    padding: 4px 8px;
    border-radius: 4px;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.quantity-display {
    min-width: 60px;
    text-align: center;
    font-weight: 600;
    font-size: 18px;
    color: var(--primary-color);
}

.quantity-btn {
    width: 35px;
    height: 35px;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

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

.quantity-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--card-bg);
    margin: auto;
    padding: 30px;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-content h3 {
    margin-bottom: 20px;
    font-size: 24px;
}

.close {
    color: var(--text-secondary);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 20px;
    top: 20px;
}

.close:hover {
    color: var(--text-primary);
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.form-actions button {
    flex: 1;
}

/* Users Table */
.users-table-container {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow-x: auto;
}

.users-table {
    width: 100%;
    border-collapse: collapse;
}

.users-table thead {
    background: #f8fafc;
}

.users-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

.users-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.users-table tbody tr:hover {
    background: #f8fafc;
}

.table-actions {
    display: flex;
    gap: 8px;
}

.table-actions button {
    padding: 6px 12px;
    font-size: 12px;
}

/* Orders Container */
.orders-container {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.order-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.order-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.order-date {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.order-id {
    font-size: 14px;
    color: var(--text-secondary);
}

.order-items {
    margin-top: 15px;
}

.order-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.order-item-name {
    font-weight: 500;
}

.order-item-details {
    color: var(--text-secondary);
    font-size: 14px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    background: var(--primary-color);
    color: white;
}

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

.badge.user {
    background: var(--secondary-color);
}

/* Image Styles */
.image-preview-container {
    margin-top: 10px;
    text-align: center;
}

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

.category-image,
.item-image,
.user-photo {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 15px;
    background: #f1f5f9;
}

.category-card .category-image {
    height: 180px;
    width: 100%;
}

.item-card .item-image {
    height: 150px;
    width: 100%;
    margin-bottom: 10px;
}

.user-photo-thumb {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    background: #f1f5f9;
}

.file-input {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
}

.file-input:hover {
    border-color: var(--primary-color);
}

.form-help-text {
    display: block;
    margin-top: 5px;
    font-size: 12px;
    color: var(--text-secondary);
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
    }
    
    .main-header {
        box-shadow: none;
        border-bottom: 2px solid #000;
    }
    
    .page-header {
        margin-bottom: 20px;
    }
    
    .order-card {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #000;
        margin-bottom: 20px;
    }
    
    .btn {
        display: none;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: stretch;
    }
    
    .main-nav {
        margin-top: 15px;
        width: 100%;
    }
    
    .nav-link {
        flex: 1;
        text-align: center;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .categories-grid,
    .items-container {
        grid-template-columns: 1fr;
    }
    
    .items-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .action-buttons-section {
        flex-direction: column;
    }
    
    .action-buttons-section .btn {
        width: 100%;
    }
}