:root {
      --bg: #f0f4f8;
      --container-bg: #ffffff;
      --text-color: #2c3e50;
      --quote-bg: #ecf0f1;
      --highlight: #3498db;
      --random-bg: #e8f6f3;
      --random-border: #2ecc71;
    }

    body.dark {
      --bg: #121212;
      --container-bg: #1e1e1e;
      --text-color: #f4f4f4;
      --quote-bg: #2c2c2c;
      --highlight: #8ab4f8;
      --random-bg: #1a3e38;
      --random-border: #27ae60;
    }

    body {
      font-family: 'Segoe UI', sans-serif;
      background: var(--bg);
      color: var(--text-color);
      margin: 0;
      padding: 20px;
      transition: background 0.3s, color 0.3s;
    }

    .container {
      max-width: 1000px;
      margin: auto;
      background: var(--container-bg);
      padding: 20px;
      border-radius: 12px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
      transition: background 0.3s;
    }

    h1 {
      text-align: center;
      margin-bottom: 10px;
    }

    textarea, button, input {
      width: 100%;
      padding: 12px;
      margin: 10px 0;
      border-radius: 8px;
      border: 1px solid #ccc;
      font-size: 16px;
      background: #fff;
      transition: background 0.3s;
    }

    body.dark textarea,
    body.dark input {
      background: #2c2c2c;
      color: #fff;
      border: 1px solid #444;
    }

    button {
      background-color: var(--highlight);
      color: #fff;
      font-weight: bold;
      cursor: pointer;
      border: none;
      transition: background 0.3s;
    }

    button:hover {
      opacity: 0.9;
    }

    .random-quote {
      background: var(--random-bg);
      padding: 15px;
      border-left: 5px solid var(--random-border);
      border-radius: 8px;
      font-style: italic;
      font-size: 18px;
      margin-bottom: 20px;
      text-align: center;
      animation: fadeIn 0.6s ease-in-out;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      gap: 15px;
    }

    .quote {
      background: var(--quote-bg);
      padding: 15px;
      border-radius: 10px;
      min-height: 100px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-style: italic;
      text-align: center;
      box-shadow: 0 2px 5px rgba(0,0,0,0.1);
      animation: fadeIn 0.5s ease-in;
      transition: background 0.3s;
    }

    @keyframes fadeIn {
      from {opacity: 0; transform: scale(0.95);}
      to {opacity: 1; transform: scale(1);}
    }

    .toggle-switch {
      display: flex;
      justify-content: flex-end;
      margin-bottom: 10px;
    }

    .toggle-switch label {
      display: flex;
      align-items: center;
      gap: 10px;
      cursor: pointer;
      font-size: 14px;
    }

    @media (max-width: 500px) {
      .quote {
        font-size: 14px;
      }
    }