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

body {
    font-family: 'Poppins', sans-serif;
    background: #f5f7fa;
    color: #333;
}

/* Login Page Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 420px;
}

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

.login-header i {
    font-size: 48px;
    color: #667eea;
    margin-bottom: 10px;
}

.login-header h2 {
    color: #333;
    margin-bottom: 5px;
}

.login-header p {
    color: #777;
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e8ed;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.login-btn:hover {
    transform: translateY(-2px);
}

.alert {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.alert-success {
    background: #efe;
    color: #3c3;
    border: 1px solid #cfc;
}

.demo-info {
    margin-top: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    font-size: 13px;
    color: #666;
}

.demo-info strong {
    color: #667eea;
}

/* Dashboard Layout */
.container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    width: 260px;
    background: #2c3e50;
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: transform 0.3s ease;
    z-index: 1000;
}

.sidebar-header {
    padding: 25px 20px;
    background: #1a252f;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    font-size: 22px;
    font-weight: 600;
}

.sidebar-header i {
    margin-right: 10px;
    color: #667eea;
}

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

.menu-item {
    display: flex;
    align-items: center;
    padding: 15px 25px;
    color: #ecf0f1;
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: rgba(255,255,255,0.1);
    border-left-color: #667eea;
}

.menu-item.active {
    background: rgba(102, 126, 234, 0.2);
    border-left-color: #667eea;
}

.menu-item i {
    width: 24px;
    margin-right: 15px;
    font-size: 18px;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

.top-bar {
    background: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #333;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.welcome-text {
    color: #555;
}

.logout-btn {
    padding: 8px 20px;
    background: #e74c3c;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: background 0.3s;
    font-size: 14px;
}

.logout-btn:hover {
    background: #c0392b;
}

.content-area {
    padding: 30px;
}

/* Page Header */
.page-header {
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 28px;
    color: #2c3e50;
    margin-bottom: 5px;
}

.page-header p {
    color: #7f8c8d;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform 0.3s;
}

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

.stat-info h3 {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 10px;
    font-weight: 500;
}

.stat-info .stat-value {
    font-size: 32px;
    font-weight: 700;
    color: #2c3e50;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-card:nth-child(1) .stat-icon {
    background: rgba(52, 152, 219, 0.1);
    color: #3498db;
}

.stat-card:nth-child(2) .stat-icon {
    background: rgba(46, 204, 113, 0.1);
    color: #2ecc71;
}

.stat-card:nth-child(3) .stat-icon {
    background: rgba(241, 196, 15, 0.1);
    color: #f1c40f;
}

.stat-card:nth-child(4) .stat-icon {
    background: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
}

/* Table Styles */
.table-container {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    overflow: hidden;
}

.table-header {
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #e1e8ed;
}

.table-header h2 {
    font-size: 18px;
    color: #2c3e50;
}

.search-box {
    display: flex;
    gap: 10px;
}

.search-box input {
    padding: 8px 15px;
    border: 2px solid #e1e8ed;
    border-radius: 6px;
    font-size: 14px;
    width: 250px;
}

.btn {
    padding: 8px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
}

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

.data-table thead {
    background: #f8f9fa;
}

.data-table th {
    padding: 15px 20px;
    text-align: left;
    font-weight: 600;
    color: #555;
    font-size: 14px;
}

.data-table td {
    padding: 15px 20px;
    border-top: 1px solid #e1e8ed;
    font-size: 14px;
}

.data-table tbody tr:hover {
    background: #f8f9fa;
}

.badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.table-actions {
    display: flex;
    gap: 8px;
}

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

.btn-info {
    background: #3498db;
    color: white;
}

.btn-warning {
    background: #f39c12;
    color: white;
}

.btn-danger {
    background: #e74c3c;
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .table-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .search-box {
        width: 100%;
    }
    
    .search-box input {
        width: 100%;
    }
    
    .data-table {
        font-size: 12px;
    }
    
    .data-table th,
    .data-table td {
        padding: 10px;
    }
}

@media (max-width: 480px) {
    .content-area {
        padding: 15px;
    }
    
    .stat-card {
        padding: 15px;
    }
    
    .stat-info .stat-value {
        font-size: 24px;
    }
}