:root {
            --primary: #2a9d8f;
            --secondary: #264653;
            --accent: #e9c46a;
            --light: #f1faee;
            --highlight: #e76f51;
            --warning: #f4a261;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.6;
        }
        
        header {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
            color: white;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.5rem;
        }
        
        .logo i {
            color: var(--accent);
        }
        
        .nav-links {
            display: flex;
            gap: 2rem;
        }
        
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        
        .nav-links a:hover {
            color: var(--accent);
        }
        
        .active {
            color: var(--accent) !important;
            border-bottom: 2px solid var(--accent);
        }
        
        .page-header {
            background: linear-gradient(rgba(38, 70, 83, 0.9), rgba(38, 70, 83, 0.95)), url('https://images.unsplash.com/photo-1569163139394-de44aa9a21ef?ixlib=rb-4.0.3') no-repeat center center/cover;
            color: white;
            padding: 3rem 2rem;
            text-align: center;
        }
        
        .page-header h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }
        
        .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
        }
        
        .breadcrumb a {
            color: var(--accent);
            text-decoration: none;
        }
        
        .breadcrumb span {
            color: white;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
            color: var(--secondary);
            font-size: 2.2rem;
            position: relative;
        }
        
        .section-title:after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background: var(--primary);
            margin: 0.5rem auto;
            border-radius: 2px;
        }
        
        .simulation-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 3rem 0;
        }
        
        @media (max-width: 900px) {
            .simulation-container {
                grid-template-columns: 1fr;
            }
        }
        
        .control-panel {
            background: white;
            border-radius: 10px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .control-group {
            margin-bottom: 2rem;
        }
        
        .control-group h3 {
            color: var(--secondary);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .control-group h3 i {
            color: var(--primary);
        }
        
        .slider-container {
            margin-bottom: 1.5rem;
        }
        
        .slider-label {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
        }
        
        .slider {
            width: 100%;
            height: 8px;
            border-radius: 4px;
            background: #ddd;
            outline: none;
        }
        
        .slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary);
            cursor: pointer;
        }
        
        .slider-energy::-webkit-slider-thumb {
            background: var(--highlight);
        }
        
        .slider-transport::-webkit-slider-thumb {
            background: var(--accent);
        }
        
        .slider-agriculture::-webkit-slider-thumb {
            background: var(--primary);
        }
        
        .slider-industry::-webkit-slider-thumb {
            background: var(--warning);
        }
        
        .results-panel {
            background: white;
            border-radius: 10px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            display: flex;
            flex-direction: column;
        }
        
        .climate-visualization {
            flex: 1;
            background: var(--light);
            border-radius: 8px;
            margin-bottom: 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 300px;
            position: relative;
            overflow: hidden;
        }
        
        .planet {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: linear-gradient(45deg, #2a9d8f, #264653, #e9c46a);
            position: relative;
            box-shadow: 0 0 30px rgba(0, 0, 0, 0.2);
            transition: all 0.5s ease;
        }
        
        .temperature-display {
            position: absolute;
            top: 20px;
            left: 0;
            right: 0;
            text-align: center;
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--secondary);
        }
        
        .chart-container {
            height: 250px;
            margin-top: 1rem;
        }
        
        .impact-summary {
            background: var(--light);
            border-radius: 8px;
            padding: 1.5rem;
            margin-top: 1rem;
        }
        
        .impact-summary h3 {
            color: var(--secondary);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .impact-item {
            display: flex;
            align-items: center;
            margin-bottom: 0.5rem;
            gap: 0.5rem;
        }
        
        .impact-item i {
            color: var(--primary);
        }
        
        .btn {
            display: inline-block;
            background-color: var(--highlight);
            color: white;
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            text-align: center;
        }
        
        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        
        .btn-outline:hover {
            background: var(--primary);
            color: white;
        }
        
        .btn:hover {
            background-color: #d45a3c;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .text-center {
            text-align: center;
        }
        
        .mt-3 {
            margin-top: 3rem;
        }
        
        .scenario-buttons {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        
        .scenario-btn {
            background: white;
            border: 2px solid var(--primary);
            border-radius: 8px;
            padding: 1rem;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .scenario-btn:hover {
            background: var(--primary);
            color: white;
        }
        
        .scenario-btn h3 {
            color: var(--secondary);
            margin-bottom: 0.5rem;
        }
        
        .scenario-btn.active {
            background: var(--primary);
            color: white;
        }
        
        .scenario-btn.active h3 {
            color: white;
        }
        
        footer {
            background: var(--secondary);
            color: white;
            padding: 3rem 2rem;
            text-align: center;
            margin-top: 4rem;
        }
         .footer-content h3 {
       font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--accent); /* soft yellow */
}
        .footer-content {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin: 2rem 0;
        }
        
        .footer-links a {
            color: var(--accent);
            text-decoration: none;
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
        }