:root {
    --bg-color: #1a1a1a;
    --text-color: #fff;
    --border-color: #FFB479;
    --button-bg: #FFB964;
    --button-text: #1a1a1a;
    --button-hover-bg: #FFCD8F;
    --card-bg: #2a2a2a;
    --mango-accent: #FFE500;
  }
  .light-mode {
    --bg-color: #fff;
    --text-color: #1a1a1a;
    --border-color: #FFB964;
    --button-bg: #FFB479;
    --button-text: #fff;
    --button-hover-bg: #FFCD8F;
    --card-bg: #f0f0f0;
  }
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  body {
    font-family: 'Orbitron', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
  }
  body.no-scroll {
    overflow: hidden;
  }
  .mode-toggle, .cards-todo-counter {
    position: fixed;
    padding: 5px;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: 5px solid var(--border-color);
    border-radius: 5px;
    font-family: 'Orbitron', sans-serif;
    z-index: 1000;
    cursor: pointer;
  }
  .mode-toggle {
    top: 20px;
    right: 20px;
  }
  .cards-todo-counter {
    top: 20px;
    left: 20px;
  }
  header {
    padding: 20px;
    text-align: center;
  }
  .center-image {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
  }
  main {
    max-width: 1200px;
    width: 100%;
    padding: 20px;
  }
  .card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
  }
  .card {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s;
    background-color: var(--card-bg);
  }
  .card:hover {
    transform: scale(1.05);
  }
  .card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    object-position: top right;
  }
  .card h2 {
    padding: 10px;
    text-align: center;
  }
  .card-details {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background-color: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
    max-width: 80%;
    max-height: 80%;
    overflow-y: auto;
    z-index: 1001;
    opacity: 0;
    transition: transform 0.3s ease-out, opacity 0.3s ease-out;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .card-details::-webkit-scrollbar {
    display: none;
  }
  .card-details.active {
    display: block;
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  .card-details-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .card-details-image {
    max-width: 300px;
    margin-bottom: 20px;
  }
  .card-details-description {
    background-color: rgba(255, 229, 0, 0.1);
    border-radius: 5px;
    padding: 10px;
    margin-bottom: 20px;
    max-width: 500px;
    text-align: justify;
  }
  .card-details-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
  }
  .note {
    border: 1px solid var(--border-color);
    padding: 20px;
    margin-top: 20px;
    border-radius: 10px;
  }
  .button {
    display: inline-block;
    padding: 10px 20px;
    margin: 10px;
    color: var(--button-text);
    background-color: var(--button-bg);
    border: 2px solid var(--border-color);
    border-radius: 5px;
    text-decoration: none;
    transition: background-color 0.3s, color 0.3s;
    font-family: 'Orbitron', sans-serif;
    font-size: 16px; 
    line-height: 1.5; 
    min-width: 120px;
    text-align: center;
  }
  .button:hover {
    background-color: var(--button-hover-bg);
  }
  
  .loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s;
  }
  .loader.fade-out {
    opacity: 0;
  }
  .loader-content {
    text-align: center;
  }
  .loader-image {
    width: 100px;
    height: 100px;
    animation: pulse 1s infinite alternate;
  }
  @keyframes pulse {
    from { transform: scale(1); }
    to { transform: scale(1.1); }
  }
  .scroll-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--button-bg);
    color: var(--button-text);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s;
  }
  .scroll-to-top.visible {
    opacity: 1;
  }