@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

        :root {
            --bg-color: #1A202C;
            --sidebar-color: #2D3748;
            --text-color: #E2E8F0;
            --heading-color: #ffffff;
            --accent-color: #4C51BF;
            --card-bg-color: #3B4254;
            --input-bg-color: #3B4254;
            --input-border-color: #4A5568;
            --selected-bg: #4C51BF;
            --selected-text: #ffffff;
        }

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

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.6;
            overflow: hidden;
        }

        .dashboard-container {
            display: flex;
            height: 100vh;
        }

        .sidebar {
            width: 250px;
            background-color: var(--sidebar-color);
            padding: 24px;
            display: flex;
            flex-direction: column;
            box-shadow: 4px 0 10px rgba(0, 0, 0, 0.2);
            position: sticky;
            top: 0;
            left: 0;
            height: 100%;
        }

        .sidebar-header {
            display: flex;
            align-items: center;
            margin-bottom: 32px;
        }

        .user-avatar {
            width: 40px;
            height: 40px;
            background-color: #4A5568;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
        }

        .user-avatar svg {
            width: 24px;    
            height: 24px;
            fill: #A0AEC0;
        }

        .user-name {
            font-size: 1rem;
            font-weight: 600;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            padding: 12px 16px;
            margin-bottom: 8px;
            border-radius: 8px;
            color: var(--text-color);
            text-decoration: none;
            transition: background-color 0.2s;
        }

        .sidebar-nav a:hover {
            background-color: #4A5568;
        }

        .sidebar-nav a.active {
            background-color: var(--selected-bg);
            color: var(--selected-text);
            font-weight: 500;
        }
        
        .sidebar-nav a svg {
            width: 20px;
            height: 20px;
            margin-right: 12px;
            fill: currentColor;
        }

        .main-content {
            flex-grow: 1;
            padding: 32px 48px;
            overflow-y: auto;
        }

        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 32px;
        }

        .header h1 {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--heading-color);
        }

        .filter-button {
            display: flex;
            align-items: center;
            background-color: var(--accent-color);
            color: var(--selected-text);
            padding: 8px 16px;
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.2s;
            border: none;
        }

        .filter-button:hover {
            background-color: #667EEA;
        }

        .filter-button svg {
            width: 16px;
            height: 16px;
            fill: currentColor;
            margin-right: 8px;
        }

        .filters {
            display: grid;
            grid-template-columns: repeat(6, minmax(0, 1fr));
            gap: 16px;
            margin-bottom: 40px;
        }

        .filter-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .filter-group label {
            font-size: 0.875rem;
            font-weight: 500;
            color: #A0AEC0;
        }

        .filter-group input, .filter-group select {
            width: 100%;
            padding: 10px 12px;
            background-color: var(--input-bg-color);
            border: 1px solid var(--input-border-color);
            border-radius: 8px;
            color: var(--text-color);
            font-size: 1rem;
            -webkit-appearance: none;
            -moz-appearance: none;
            appearance: none;
            cursor: pointer;
        }
        
        .filter-group select {
            background: var(--input-bg-color) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="%23A0AEC0" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-chevron-down"><polyline points="6 9 12 15 18 9"></polyline></svg>') no-repeat right 12px center;
            background-size: 16px;
            padding-right: 32px;
        }

        .summary-heading {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--heading-color);
            margin-bottom: 24px;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .card {
            background-color: var(--card-bg-color);
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            position: relative;
            overflow: hidden;
            z-index: 1;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            background:
                linear-gradient(135deg, rgba(162, 85, 255, 0.3) 0%, transparent 40%),
                linear-gradient(225deg, rgba(255, 105, 180, 0.3) 0%, transparent 40%),
                linear-gradient(315deg, rgba(255, 230, 0, 0.3) 0%, transparent 40%),
                linear-gradient(45deg, rgba(0, 204, 255, 0.3) 0%, transparent 40%);
            mix-blend-mode: screen;
            z-index: -1;
        }
        .card.card-1::before {
            background: linear-gradient(135deg, rgba(100, 200, 255, 0.3) 0%, transparent 40%), linear-gradient(225deg, rgba(255, 150, 255, 0.3) 0%, transparent 40%);
            mix-blend-mode: lighten;
        }
        .card.card-2::before {
            background: linear-gradient(135deg, rgba(255, 100, 100, 0.3) 0%, transparent 40%), linear-gradient(225deg, rgba(255, 255, 100, 0.3) 0%, transparent 40%);
            mix-blend-mode: lighten;
        }
        .card.card-3::before {
            background: linear-gradient(135deg, rgba(100, 255, 100, 0.3) 0%, transparent 40%), linear-gradient(225deg, rgba(200, 200, 255, 0.3) 0%, transparent 40%);
            mix-blend-mode: lighten;
        }
        .card.card-4::before {
            background: linear-gradient(135deg, rgba(255, 150, 100, 0.3) 0%, transparent 40%), linear-gradient(225deg, rgba(100, 255, 200, 0.3) 0%, transparent 40%);
            mix-blend-mode: lighten;
        }

        .card h2 {
            font-size: 1rem;
            font-weight: 500;
            color: #A0AEC0;
            margin-bottom: 8px;
        }

        .card .metric {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--heading-color);
            margin-bottom: 4px;
        }

        .card .description {
            font-size: 0.875rem;
            color: #A0AEC0;
        }