:root {
    --sidebar-width: 260px;
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --background-color: #f8f9fa;
    --text-color: #333;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
}

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

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(135deg, var(--primary-color) 0%, #34495e 100%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: all 0.3s;
    z-index: 1000;
}

.sidebar-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h4 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

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

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
    border-left-color: var(--secondary-color);
}

.sidebar .nav-link i {
    width: 20px;
}

.sidebar .collapse .nav-link {
    padding: 8px 20px;
    font-size: 0.9rem;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.content-wrapper {
    flex: 1;
    padding: 20px;
}

/* Navbar */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#sidebarToggle {
    color: var(--primary-color);
}

/* Cards */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    margin-bottom: 20px;
}

.card-header {
    background-color: white;
    border-bottom: 2px solid var(--secondary-color);
    font-weight: 600;
    padding: 15px 20px;
}

.card-body {
    padding: 20px;
}

/* Dashboard Cards */
.stat-card {
    border-left: 4px solid var(--secondary-color);
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
}

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

.stat-card.success {
    border-left-color: #27ae60;
}

.stat-card.warning {
    border-left-color: #f39c12;
}

.stat-card.info {
    border-left-color: #3498db;
}

/* Tables */
.table-responsive {
    border-radius: 8px;
    overflow: hidden;
}

.table {
    margin-bottom: 0;
}

.table thead th {
    background-color: var(--primary-color);
    color: white;
    border: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    padding: 15px;
}

.table tbody tr {
    transition: background-color 0.2s;
}

.table tbody tr:hover {
    background-color: rgba(52, 152, 219, 0.05);
}

/* Buttons */
.btn {
    border-radius: 6px;
    padding: 8px 20px;
    font-weight: 500;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
}

/* Forms */
.form-control,
.form-select {
    border-radius: 6px;
    border: 1px solid #ddd;
    padding: 10px 15px;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.form-label {
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--primary-color);
}

/* Alerts */
.alert {
    border-radius: 8px;
    border: none;
    padding: 15px 20px;
}

/* Footer */
.footer {
    background-color: white;
    margin-top: auto;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.login-card {
    max-width: 450px;
    width: 100%;
    margin: 20px;
}

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

.login-header h3 {
    color: var(--primary-color);
    font-weight: 700;
}

/* Badge */
.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-weight: 500;
}

/* Action Buttons */
.action-btn {
    padding: 4px 8px;
    font-size: 0.85rem;
    margin: 2px;
}

/* Print Styles */
@media print {
    .sidebar,
    .navbar,
    .footer,
    .no-print {
        display: none !important;
    }

    .main-content {
        margin-left: 0;
    }

    .content-wrapper {
        padding: 0;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        margin-left: calc(-1 * var(--sidebar-width));
    }

    .sidebar.active {
        margin-left: 0;
    }

    .main-content {
        margin-left: 0;
    }
}

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

.sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}