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

        :root {
            --primary-green: #2d5016;
            --secondary-green: #4a7c2f;
            --accent-blue: #1e5a7d;
            --alert-orange: #e67e22;
            --alert-red: #c0392b;
            --bg-dark: #0f1419;
            --bg-light: #f4f6f5;
            --text-dark: #2c3e50;
            --text-light: #ecf0f1;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Header y Navegación */
        header {
            background: linear-gradient(135deg, var(--primary-green), var(--accent-blue));
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }

        nav {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }

        .nav-links a:hover,
        .nav-links a.active {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* Secciones */
        .section {
            display: none;
            min-height: calc(100vh - 80px);
            padding: 3rem 2rem;
            animation: fadeIn 0.5s ease;
        }

        .section.active {
            display: block;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
        }

        /* Hero Section */
        .hero {
            text-align: center;
            padding: 4rem 0;
            background: linear-gradient(180deg, rgba(45, 80, 22, 0.3), rgba(15, 20, 25, 0.9));
            border-radius: 12px;
            margin-bottom: 3rem;
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #4a7c2f, #1e5a7d);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-light);
            max-width: 800px;
            margin: 0 auto;
            opacity: 0.9;
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }

        .stat-card {
            background: linear-gradient(135deg, rgba(74, 124, 47, 0.2), rgba(30, 90, 125, 0.2));
            padding: 2rem;
            border-radius: 12px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 24px rgba(74, 124, 47, 0.3);
        }

        .stat-number {
            font-size: 3rem;
            font-weight: bold;
            margin-bottom: 0.5rem;
        }

        .stat-card.pollution .stat-number { color: var(--alert-orange); }
        .stat-card.deforestation .stat-number { color: #27ae60; }
        .stat-card.climate .stat-number { color: var(--alert-red); }

        .stat-label {
            font-size: 1.1rem;
            color: var(--text-light);
            opacity: 0.8;
        }

        /* Mapa Interactivo */
        .map-container {
            background: rgba(30, 90, 125, 0.1);
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .map-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .map-title {
            font-size: 2rem;
            color: var(--text-light);
        }

        .map-filters {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .filter-btn {
            padding: 0.75rem 1.5rem;
            border: 2px solid transparent;
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-light);
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.95rem;
            font-weight: 500;
        }

        .filter-btn:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        .filter-btn.active {
            background: var(--secondary-green);
            border-color: var(--text-light);
        }

        .filter-btn.pollution.active { background: var(--alert-orange); }
        .filter-btn.deforestation.active { background: #27ae60; }
        .filter-btn.climate.active { background: var(--alert-red); }

        #worldMap {
            width: 100%;
            height: 600px;
            background: linear-gradient(180deg, #1a2332, #0f1419);
            border-radius: 8px;
            position: relative;
            overflow: hidden;
            cursor: crosshair;
        }

        .marker {
            position: absolute;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            cursor: pointer;
            transition: all 0.3s ease;
            animation: pulse 2s infinite;
            box-shadow: 0 0 20px currentColor;
        }

        .marker:hover {
            transform: scale(1.5);
            z-index: 10;
        }

        .marker.pollution { background-color: var(--alert-orange); }
        .marker.deforestation { background-color: #27ae60; }
        .marker.climate { background-color: var(--alert-red); }

        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.2); }
        }

        .marker-tooltip {
            position: absolute;
            background: rgba(0, 0, 0, 0.95);
            color: var(--text-light);
            padding: 1rem;
            border-radius: 8px;
            max-width: 300px;
            pointer-events: none;
            z-index: 100;
            border: 2px solid;
            display: none;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
        }

        .marker-tooltip.show {
            display: block;
        }

        .tooltip-title {
            font-weight: bold;
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }

        .tooltip-info {
            font-size: 0.9rem;
            line-height: 1.4;
        }

        /* Content Sections */
        .content-section {
            background: rgba(30, 90, 125, 0.1);
            border-radius: 12px;
            padding: 3rem;
            margin: 2rem 0;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .content-section h2 {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            color: var(--text-light);
        }

        .content-section p {
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
            opacity: 0.9;
        }

        .impact-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }

        .impact-card {
            background: rgba(0, 0, 0, 0.3);
            padding: 2rem;
            border-radius: 8px;
            border-left: 4px solid;
            transition: all 0.3s ease;
        }

        .impact-card:hover {
            transform: translateX(10px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }

        .impact-card.pollution { border-color: var(--alert-orange); }
        .impact-card.deforestation { border-color: #27ae60; }
        .impact-card.climate { border-color: var(--alert-red); }

        .impact-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--text-light);
        }

        .impact-card ul {
            list-style: none;
            padding-left: 0;
        }

        .impact-card li {
            padding: 0.5rem 0;
            padding-left: 1.5rem;
            position: relative;
        }

        .impact-card li::before {
            content: "▸";
            position: absolute;
            left: 0;
            color: var(--secondary-green);
        }

        /* Progress Bars */
        .progress-section {
            margin: 3rem 0;
        }

        .progress-item {
            margin-bottom: 2rem;
        }

        .progress-label {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
            font-size: 1.1rem;
        }

        .progress-bar {
            height: 30px;
            background: rgba(0, 0, 0, 0.3);
            border-radius: 15px;
            overflow: hidden;
            position: relative;
        }

        .progress-fill {
            height: 100%;
            border-radius: 15px;
            transition: width 1s ease;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            padding-right: 1rem;
            font-weight: bold;
        }

        .progress-fill.pollution { background: linear-gradient(90deg, var(--alert-orange), #f39c12); }
        .progress-fill.deforestation { background: linear-gradient(90deg, #27ae60, #2ecc71); }
        .progress-fill.climate { background: linear-gradient(90deg, var(--alert-red), #e74c3c); }

        /* Responsive */
        @media (max-width: 768px) {
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .nav-links { 
                width: 100%;
                justify-content: center;
                margin-top: 1rem;
            }
            #worldMap { height: 400px; }
            .map-header { flex-direction: column; align-items: flex-start; }
            .content-section { padding: 2rem; }
            .content-section h2 { font-size: 2rem; }
        }

        /* Footer */
        footer {
            background: var(--primary-green);
            padding: 2rem;
            text-align: center;
            margin-top: 4rem;
        }

        footer p {
            opacity: 0.8;
        }