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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8fafc;
    color: #334155;
    line-height: 1.6;
}

/* Layout */
.main-content {
    margin-left: 250px;
    padding-top: 70px;
    transition: margin-left 0.3s;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 250px;
    background: white;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    z-index: 1000;
    overflow-y: auto;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid #e5e7eb;
}

.sidebar-header h2 {
    color: #334155;
    font-size: 20px;
}

.sidebar-nav ul {
    list-style: none;
    padding: 20px 0;
}

.sidebar-nav li {
    margin-bottom: 5px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: #64748b;
    text-decoration: none;
    transition: all 0.3s;
}

.sidebar-nav a:hover {
    background: #f1f5f9;
    color: #334155;
}

.sidebar-nav a.active {
    background: #eff6ff;
    color: #2563eb;
    border-left: 4px solid #2563eb;
}

.sidebar-nav i {
    margin-right: 10px;
    width: 20px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    right: 0;
    left: 250px;
    height: 70px;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 999;
    transition: left 0.3s;
}

.navbar-left {
    display: flex;
    align-items: center;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    color: #64748b;
    cursor: pointer;
    padding: 5px;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-menu {
    position: relative;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 5px;
    color: #334155;
}

.user-btn:hover {
    background: #f1f5f9;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    min-width: 200px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-radius: 8px;
    padding: 10px 0;
    display: none;
}

.user-menu:hover .user-dropdown {
    display: block;
}

.user-dropdown a {
    display: block;
    padding: 10px 20px;
    color: #64748b;
    text-decoration: none;
}

.user-dropdown a:hover {
    background: #f1f5f9;
    color: #334155;
}

/* Cards */
.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 20px;
    margin-bottom: 20px;
}

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

.card-header h2 {
    color: #334155;
    font-size: 18px;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

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

.data-table th {
    background: #f8fafc;
    padding: 12px 15px;
    text-align: left;
    font-weight: 600;
    color: #475569;
    border-bottom: 2px solid #e5e7eb;
}

.data-table td {
    padding: 12px 15px;
    border-bottom: 1px solid #e5e7eb;
}

.data-table tr:hover {
    background: #f8fafc;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #475569;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
}

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

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

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

.btn-secondary:hover {
    background: #4b5563;
}

.btn-success {
    background: #10b981;
    color: white;
}

.btn-success:hover {
    background: #059669;
}

.btn-danger {
    background: #ef4444;
    color: white;
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

/* Alerts */
.alert {
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
}

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

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

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

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1100;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid #e5e7eb;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid #e5e7eb;
    text-align: right;
}

/* Responsive */
@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
    }
    
    .navbar {
        left: 0;
    }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .menu-toggle {
        display: block;
        margin-right: 15px;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .sidebar,
    .no-print {
        display: none !important;
    }
    
    .main-content {
        margin: 0;
        padding: 0;
    }
}