:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #818CF8;
    --secondary: #0EA5E9;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --dark: #1E293B;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --border-radius: 12px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --sidebar-width: 260px;
}

* {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
    background-color: var(--gray-50);
    color: var(--gray-800);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
}

.btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
    border-radius: 8px;
}

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

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: all 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--gray-100);
    font-weight: 600;
}

/* Forms */
.form-control, .form-select {
    border-radius: 8px;
    border: 1px solid var(--gray-200);
    padding: 10px 14px;
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-label {
    font-weight: 500;
    color: var(--gray-700);
    font-size: 0.875rem;
}

/* Alerts */
.alert {
    border-radius: 8px;
    border: none;
}

.alert-success {
    background-color: #ECFDF5;
    color: #065F46;
}

.alert-danger {
    background-color: #FEF2F2;
    color: #991B1B;
}

/* Badges */
.badge {
    border-radius: 6px;
    padding: 6px 10px;
    font-weight: 500;
}

.badge-success {
    background-color: #ECFDF5;
    color: #065F46;
}

.badge-warning {
    background-color: #FFFBEB;
    color: #92400E;
}

.badge-danger {
    background-color: #FEF2F2;
    color: #991B1B;
}

/* Tables */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 0;
}

.table thead th {
    background-color: var(--gray-50);
    color: var(--gray-600);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    padding: 0.875rem 1rem;
}

.table tbody td {
    border-color: var(--gray-100);
    vertical-align: middle;
    padding: 1rem;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background: white;
    border-right: 1px solid var(--gray-200);
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-brand {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-100);
}

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

.sidebar-nav .nav-item {
    padding: 0 0.75rem;
    margin-bottom: 0.25rem;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    color: var(--gray-600);
    font-weight: 500;
    transition: all 0.2s ease;
}

.sidebar-nav .nav-link:hover {
    background: var(--gray-50);
    color: var(--primary);
}

.sidebar-nav .nav-link.active {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(124, 58, 237, 0.1));
    color: var(--primary);
}

.sidebar-nav .nav-link i {
    font-size: 1.1rem;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.topbar {
    height: 64px;
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.content-wrapper {
    padding: 1.5rem;
}

/* Page Title */
.page-title {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--gray-900);
}

/* Dropdown */
.dropdown-menu {
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    padding: 0.5rem;
}

.dropdown-item {
    border-radius: 6px;
    padding: 0.5rem 1rem;
}

.dropdown-item:hover {
    background: var(--gray-50);
}

/* Stats Cards */
.stat-card {
    padding: 1.25rem;
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
}

.stat-card .stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
}

.empty-state .empty-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gray-100);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.empty-state .empty-icon i {
    font-size: 2rem;
    color: var(--gray-400);
}

/* Responsive */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
}