:root {
    --primary-color: #4e73df;
    --secondary-color: #858796;
    --success-color: #1cc88a;
    --info-color: #36b9cc;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --light-color: #f8f9fc;
    --dark-color: #5a5c69;
}

body {
    background-color: var(--light-color);
    font-family: 'Nunito', sans-serif;
}

/* Sidebar Styles */
.sidebar {
    min-height: 100vh;
    background: linear-gradient(180deg, var(--primary-color) 10%, #224abe 100%);
    color: white;
    position: fixed;
    z-index: 100;
    width: 250px;
    transition: all 0.3s;
}

.sidebar-brand {
    height: 70px;
    display: flex;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-brand h2 {
    color: white;
    font-size: 1.2rem;
    margin: 0;
}

.sidebar-menu {
    padding: 20px 0;
}

.sidebar-menu a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    transition: all 0.3s;
}

.sidebar-menu a:hover {
    background: rgba(255,255,255,0.1);
    color: white;
    padding-left: 25px;
}

.sidebar-menu a i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.sidebar-menu .active {
    background: rgba(255,255,255,0.1);
    color: white;
    border-left: 4px solid white;
}

/* Main Content */
.main-content {
    margin-left: 250px;
    padding: 20px;
    transition: all 0.3s;
}

/* Topbar */
.topbar {
    background: white;
    height: 70px;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-bottom: 24px;
}

/* Cards */
.card {
    border: none;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    margin-bottom: 24px;
    transition: all 0.3s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.card-header {
    background: white;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 15px 20px;
}

.stat-card {
    border-left: 4px solid var(--primary-color);
}

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

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

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

/* Tables */
.table-container {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.dataTables_wrapper .dataTables_filter input {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 5px 10px;
}

/* Forms */
.form-control, .form-select {
    border-radius: 4px;
    border: 1px solid #ddd;
    padding: 8px 12px;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(78,115,223,0.25);
}

/* Buttons */
.btn {
    border-radius: 4px;
    padding: 8px 16px;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--primary-color);
    border: none;
}

.btn-primary:hover {
    background: #224abe;
}

/* Login Page */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

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

.login-logo img {
    width: 100px;
    margin-bottom: 15px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        margin-left: -250px;
    }
    
    .sidebar.active {
        margin-left: 0;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .main-content.active {
        margin-left: 250px;
    }
    
    .topbar {
        margin-left: 0;
    }
}