:root {
    --main-color: #0ea5e9;
    --accent-color: #0284c7;
    --heading-color: #1e293b;
    --paragraph-color: #000000;
    --paragraph-light: #94a3b8;
    --background-color: #ffffff;
    --container-bg: #ffffff;
    
    /* Palette for categories */
    --sky-500: #3b82f6;
    --forest-500: #22c55e;
    --violet-500: #a855f7;
    --jade-500: #10b981;
    --aqua-500: #06b6d4;
    --sunset-500: #f59e0b;
    --limegreen-500: #84cc16;
    --cherry-500: #f43f5e;
  }
  
  /* Dark theme customization */
  [data-theme="dark"] {
    --heading-color: #f8fafc;
    --paragraph-color: #cbd5e1;
    --background-color: #0f172a;
    --container-bg: #1e293b;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(to bottom, var(--background-color), #f3f4f6);
    color: var(--paragraph-color);
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
  }
  
  .toggle-theme {
    position: fixed;
    top: 1rem;
    right: 1rem;
    padding: 0.75rem;
    border-radius: 50px;
    background: var(--container-bg);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    z-index: 2;
    transition: transform 0.3s, box-shadow 0.3s;
  }
  
  .toggle-theme:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  }
  
  .toggle-theme i {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--heading-color);
  }
  
  .hide {
    display: none;
  }
  
  .sustainability-section {
    padding: 5rem 1rem;
  }
  
  .wrapper {
    max-width: 1200px;
    margin: 0 auto;
  }
  
  .page-header {
    text-align: center;
    margin-bottom: 4rem;
  }
  
  .title-large {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #0077b6, #00b4d8);
    -webkit-background-clip: text;
    color: transparent;
    display: inline-block;
  }
  
  .text-light {
    color: var(--paragraph-color);
    font-size: 1.125rem;
    max-width: 48rem;
    margin: 0 auto;
    line-height: 1.7;
  }
  
  .stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s, transform 0.5s;
  }
  
  .stats-container.visible {
    opacity: 1;
    transform: translateY(0);
  }
  
  .stat-box {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
    border: 2px solid transparent;
  }
  
  .stat-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  }
  
  .icon-container {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
  }
  
  .icon-container i {
    width: 3rem;
    height: 3rem;
    transition: transform 0.3s;
  }
  
  .stat-box:hover .icon-container i {
    transform: scale(1.1);
  }
  
  .stat-box h3 {
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 1rem;
    text-align: center;
  }
  
  .cause-effect-container > div {
    margin-bottom: 1rem;
    transition: transform 0.3s;
  }
  
  .cause-effect-container > div:hover {
    transform: translateX(0.5rem);
  }
  
  h4 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
  }
  
  h4 span {
    margin-right: 0.5rem;
  }
  
  .initiative-list ul {
    list-style: none;
    margin-top: 0.5rem;
  }
  
  .initiative-list li {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    transition: transform 0.3s;
  }
  
  .initiative-list li:hover {
    transform: translateX(0.5rem);
  }
  
  .statistics-box {
    background: rgba(0, 0, 0, 0.05);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
    transition: transform 0.3s;
  }
  
  .statistics-box:hover {
    transform: scale(1.05);
  }
  
  .statistics-box h4 {
    margin-bottom: 0.5rem;
  }
  
  .statistics-box p:last-child {
    font-weight: bold;
    margin-top: 0.5rem;
  }
  
  [data-theme="dark"] .stat-box {
    background: rgba(30, 41, 59, 0.8);
  }
  
  [data-theme="dark"] .statistics-box {
    background: rgba(255, 255, 255, 0.05);
  }