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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f8fafc;
    color: #334155;
    line-height: 1.6;
}

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: #1e293b;
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid #334155;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo i {
    font-size: 1.75rem;
    color: #3b82f6;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
}

.sidebar-nav ul {
    list-style: none;
}

.nav-item {
    margin: 0.25rem 0;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.2s ease;
}

.nav-link:hover {
    background-color: #334155;
    color: white;
}

.nav-item.active .nav-link {
    background-color: #3b82f6;
    color: white;
}

.nav-link i {
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 2rem;
    min-height: 100vh;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.header-left h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

.subtitle {
    color: #64748b;
    font-size: 1rem;
}

.header-right {
    display: flex;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background-color: #3b82f6;
    color: white;
}

.btn-primary:hover {
    background-color: #2563eb;
}

.btn-secondary {
    background-color: #64748b;
    color: white;
}

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

.btn-outline {
    background-color: transparent;
    color: #64748b;
    border: 1px solid #e2e8f0;
}

.btn-outline:hover {
    background-color: #f1f5f9;
    color: #334155;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
}

.stat-card:nth-child(1) .stat-icon {
    background-color: #3b82f6;
}

.stat-card:nth-child(2) .stat-icon {
    background-color: #10b981;
}

.stat-card:nth-child(3) .stat-icon {
    background-color: #f59e0b;
}

.stat-card:nth-child(4) .stat-icon {
    background-color: #ef4444;
}

.stat-content h3 {
    font-size: 1.875rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

.stat-content p {
    color: #64748b;
    font-size: 0.875rem;
}

/* Filters Section */
.filters-section {
    background: white;
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 300px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #64748b;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: border-color 0.2s ease;
}

.search-box input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.filter-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.filter-select {
    padding: 0.75rem 1rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    background: white;
    min-width: 150px;
}

.filter-select:focus {
    outline: none;
    border-color: #3b82f6;
}

/* Table Container */
.table-container {
    background: white;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.table-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.checkbox-container input[type="checkbox"] {
    margin-right: 0.5rem;
}

.selected-count {
    color: #64748b;
    font-size: 0.875rem;
}

.table-controls {
    display: flex;
    gap: 0.5rem;
}

.table-wrapper {
    overflow-x: auto;
}

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

.people-table th {
    background-color: #f8fafc;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: #374151;
    border-bottom: 1px solid #e2e8f0;
    white-space: nowrap;
}

.people-table td {
    padding: 1rem;
    border-bottom: 1px solid #f1f5f9;
    vertical-align: middle;
}

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

.people-table tbody tr.selected {
    background-color: #eff6ff;
}

/* Tags */
.tag {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background-color: #e0f2fe;
    color: #0369a1;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    margin: 0.125rem;
}

/* Actions */
.actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    padding: 0.5rem;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: 0.25rem;
    color: #64748b;
    transition: all 0.2s ease;
}

.action-btn:hover {
    background-color: #f1f5f9;
    color: #334155;
}

.action-btn.danger:hover {
    background-color: #fef2f2;
    color: #dc2626;
}

/* Table Footer */
.table-footer {
    padding: 1.5rem;
    border-top: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pagination-info {
    color: #64748b;
    font-size: 0.875rem;
}

.pagination {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.page-info {
    color: #64748b;
    font-size: 0.875rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 0.75rem;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1e293b;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: #64748b;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.25rem;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background-color: #f1f5f9;
    color: #334155;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid #e2e8f0;
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Import Zone */
.import-zone {
    border: 2px dashed #e2e8f0;
    border-radius: 0.75rem;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.import-zone:hover {
    border-color: #3b82f6;
    background-color: #f8fafc;
}

.import-zone.dragover {
    border-color: #3b82f6;
    background-color: #eff6ff;
}

.import-zone i {
    font-size: 3rem;
    color: #64748b;
    margin-bottom: 1rem;
}

.import-zone p {
    color: #64748b;
    margin-bottom: 1rem;
}

.import-preview {
    margin-top: 1rem;
}

.preview-table {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
}

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

.preview-table th,
.preview-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.875rem;
}

.preview-table th {
    background-color: #f8fafc;
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }
    
    .main-content {
        margin-left: 240px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .header-right {
        justify-content: stretch;
    }
    
    .filters-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: auto;
    }
    
    .filter-controls {
        flex-wrap: wrap;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .table-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .table-controls {
        justify-content: center;
    }
    
    .table-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 0.5rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.8rem;
    }
    
    .people-table {
        font-size: 0.8rem;
    }
    
    .people-table th,
    .people-table td {
        padding: 0.75rem 0.5rem;
    }
}