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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark-color: #1f2937;
    --light-bg: #f3f4f6;
    --sidebar-width: 220px;
    --header-height: 60px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--light-bg);
    color: #333;
    line-height: 1.6;
}

.wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar - Optimized for full width */
.sidebar {
    width: var(--sidebar-width);
    background: var(--dark-color);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.3);
    border-radius: 3px;
}

.sidebar.collapsed {
    width: 60px;
}

.sidebar-header {
    padding: 15px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    text-align: center;
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
    white-space: nowrap;
}

.sidebar.collapsed .sidebar-header h2 {
    font-size: 14px;
}

.sidebar-menu {
    padding: 15px 0;
}

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

.sidebar-menu > ul > li {
    margin-bottom: 3px;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    color: #d1d5db;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.sidebar-menu a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.sidebar-menu a.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

.sidebar-menu a i {
    margin-right: 10px;
    width: 18px;
    text-align: center;
}

.menu-section .menu-title {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    color: white;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.menu-section .menu-title i {
    margin-right: 10px;
}

.submenu {
    padding-left: 15px;
}

.submenu a {
    font-size: 13px;
    padding: 8px 15px;
}

/* Main Content - Full Width Optimized */
.main-content {
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    transition: all 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content.expanded {
    margin-left: 60px;
    width: calc(100% - 60px);
}

/* Top Header - Streamlined */
.top-header {
    background: white;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 25px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.menu-toggle {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #666;
    padding: 5px;
}

.header-left h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark-color);
    margin: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.user-info i {
    font-size: 24px;
    color: var(--primary-color);
}

.role-badge {
    background: var(--primary-color);
    color: white;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.btn-logout {
    padding: 8px 15px;
    background: var(--danger-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.2s;
    font-size: 13px;
}

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

/* Page Content - Full Width */
.page-content {
    padding: 20px;
    flex: 1;
    max-width: 100%;
}

/* Card Styles - Optimized */
.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 20px;
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid #e5e7eb;
    background: #fafbfc;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark-color);
    margin: 0;
}

/* Buttons - Streamlined */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
    line-height: 1.5;
}

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

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

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

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

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

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

.btn-secondary {
    background: #6b7280;
    color: white;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 15px;
}

/* Form Styles - Optimized */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--dark-color);
    font-size: 13px;
}

.form-group label.required::after {
    content: "*";
    color: var(--danger-color);
    margin-left: 3px;
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

select.form-control {
    cursor: pointer;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

/* Checkbox Styles */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.checkbox-group input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.checkbox-group label {
    margin-bottom: 0;
    cursor: pointer;
}

/* Table Styles - Full Width Optimized */
.table-container {
    overflow-x: auto;
    margin: 0;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    font-size: 13px;
}

.data-table thead {
    background: #f9fafb;
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table th {
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    color: var(--dark-color);
    border-bottom: 2px solid #e5e7eb;
    white-space: nowrap;
}

.data-table th a {
    color: var(--dark-color);
    text-decoration: none;
}

.data-table th a:hover {
    color: var(--primary-color);
}

.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid #f3f4f6;
}

.data-table tbody tr:hover {
    background: #f9fafb;
}

/* Search Box */
.search-box {
    padding: 15px 20px;
    background: white;
    border-bottom: 1px solid #e5e7eb;
}

.search-box input {
    width: 100%;
    max-width: 400px;
    padding: 8px 12px 8px 35px;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    font-size: 14px;
}

.search-box i {
    position: absolute;
    left: 30px;
    top: 24px;
    color: #9ca3af;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

/* Alert Messages */
.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--info-color);
}

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

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 15px 20px;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #6b7280;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 15px 20px;
    border-top: 1px solid #e5e7eb;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 3px;
}

.stat-info p {
    color: #6b7280;
    font-size: 13px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

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

.stat-icon.warning {
    background: var(--warning-color);
    color: white;
}

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

/* Autocomplete Results */
.autocomplete-results {
    position: absolute;
    background: white;
    border: 1px solid #ddd;
    max-height: 200px;
    overflow-y: auto;
    width: 100%;
    z-index: 1000;
    display: none;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    border-radius: 4px;
    margin-top: 2px;
}

.autocomplete-results div {
    padding: 10px 12px;
    cursor: pointer;
    border-bottom: 1px solid #f3f4f6;
    font-size: 13px;
}

.autocomplete-results div:hover {
    background: #f0f0f0;
}

/* Badge */
.badge {
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* Responsive - Tablet */
@media (max-width: 1024px) {
    .sidebar {
        margin-left: calc(var(--sidebar-width) * -1);
    }
    
    .sidebar.active {
        margin-left: 0;
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    .header-left h1 {
        font-size: 16px;
    }
    
    .user-info span {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .data-table {
        font-size: 12px;
    }
    
    .data-table th,
    .data-table td {
        padding: 8px;
    }
}

/* Loading Spinner - Optimized */
.spinner {
    border: 3px solid #f3f4f6;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Performance Optimizations */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.card, .modal-content, .stat-card {
    will-change: transform;
}

img {
    max-width: 100%;
    height: auto;
}

/* ── Bulk action toolbar ── */
.bulk-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

/* ── Pagination ── */
.pagination {
    padding: 16px 0;
    text-align: center;
}
.pagination .btn { margin: 0 2px; }

/* ── Alert types ── */
.alert-error  { background:#fee; border-left:4px solid #e53e3e; color:#c53030; padding:12px; margin-bottom:16px; border-radius:4px; }
.alert-success{ background:#f0fff4; border-left:4px solid #38a169; color:#276749; padding:12px; margin-bottom:16px; border-radius:4px; }