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

    body {
      font-family: 'Poppins', sans-serif;
      line-height: 1.6;
      background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
      color: var(--text-color);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 20px;
      overflow-x: hidden;
    }

    :root {
      --primary-color: #1e90ff;
      --secondary-color: #ff6b6b;
      --accent-color: #28a745;
      --card-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
      --button-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
      --transition: all 0.3s ease;
    }

    [data-theme="light"] {
      --bg-gradient-start: #e0f7fa;
      --bg-gradient-end: #80deea;
      --text-color: #1a1a1a;
      --card-bg: #ffffff;
      --button-bg: #1e90ff;
      --button-hover: #1565c0;
      --progress-bg: #e0e0e0;
      --progress-fill: #28a745;
    }

    [data-theme="dark"] {
      --bg-gradient-start: #1c2526;
      --bg-gradient-end: #2e4057;
      --text-color: #e0e0e0;
      --card-bg: #2c3e50;
      --button-bg: #1e90ff;
      --button-hover: #1565c0;
      --progress-bg: #4a5e72;
      --progress-fill: #28a745;
    }

    h1 {
      font-size: 2.8em;
      font-weight: 700;
      margin-bottom: 1.5rem;
      text-align: center;
      background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      animation: fadeIn 1s ease-in-out;
    }

    .input-container {
      margin-bottom: 1.5rem;
      text-align: center;
      width: 100%;
      max-width: 400px;
    }

    input[type="text"] {
      padding: 12px;
      font-size: 1em;
      border: 2px solid var(--primary-color);
      border-radius: 8px;
      width: 100%;
      background-color: var(--card-bg);
      color: var(--text-color);
      transition: var(--transition);
      box-shadow: var(--button-shadow);
    }

    input[type="text"]:focus {
      outline: none;
      border-color: var(--secondary-color);
      box-shadow: 0 0 8px var(--secondary-color);
    }

    .button-container {
      display: flex;
      gap: 12px;
      margin-bottom: 1.5rem;
      flex-wrap: wrap;
      justify-content: center;
    }

    button {
      padding: 12px 24px;
      font-size: 1em;
      font-weight: 600;
      background: linear-gradient(45deg, var(--button-bg), var(--secondary-color));
      color: #fff;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: var(--button-shadow);
    }

    button:hover {
      background: linear-gradient(45deg, var(--button-hover), var(--secondary-color));
      transform: translateY(-2px);
    }

    button:disabled {
      background: var(--progress-bg);
      cursor: not-allowed;
      transform: none;
      box-shadow: none;
    }

    button.clicked {
      transform: scale(0.95);
    }

    #quizContainer {
      background: var(--card-bg);
      padding: 2rem;
      border-radius: 12px;
      box-shadow: var(--card-shadow);
      width: 100%;
      max-width: 600px;
      text-align: center;
      margin-bottom: 1.5rem;
      display: none;
      animation: slideIn 0.5s ease-out;
    }

    #quizContainer.show {
      display: block;
    }

    .quiz-question h3 {
      font-size: 1.5em;
      margin-bottom: 1rem;
      color: var(--text-color);
    }

    .quiz-option {
      padding: 12px;
      margin: 8px 0;
      background: var(--button-bg);
      color: #fff;
      border-radius: 8px;
      cursor: pointer;
      transition: var(--transition);
      font-weight: 500;
      box-shadow: var(--button-shadow);
    }

    .quiz-option:hover {
      background: var(--button-hover);
      transform: translateY(-2px);
    }

    #progressContainer {
      width: 100%;
      max-width: 600px;
      margin-bottom: 1.5rem;
      display: none;
    }

    #progressContainer.show {
      display: block;
    }

    #progressBackground {
      width: 100%;
      height: 24px;
      background: var(--progress-bg);
      border-radius: 12px;
      overflow: hidden;
    }

    #progressBar {
      width: 0%;
      height: 100%;
      background: linear-gradient(45deg, var(--progress-fill), var(--secondary-color));
      border-radius: 12px;
      transition: width 0.3s ease;
    }

    #progressText {
      margin-top: 0.5rem;
      font-size: 1em;
      font-weight: 500;
      color: var(--text-color);
      text-align: center;
    }

    #resultContainer {
      background: var(--card-bg);
      padding: 2rem;
      border-radius: 12px;
      box-shadow: var(--card-shadow);
      width: 100%;
      max-width: 600px;
      text-align: center;
      display: none;
      animation: slideIn 0.5s ease-out;
    }

    #resultContainer.show {
      display: block;
    }

    #randomImage {
      max-width: 100%;
      height: auto;
      border-radius: 12px;
      margin-bottom: 1.5rem;
      opacity: 0;
      transition: opacity 0.7s ease, transform 0.7s ease;
      transform: scale(0.9);
    }

    #randomImage.show {
      opacity: 1;
      transform: scale(1);
    }

    #playerName,
    #playerPosition,
    #playerBio,
    #playerAchievements {
      opacity: 0;
      transition: opacity 0.7s ease, transform 0.7s ease;
      transform: translateY(20px);
    }

    #playerName.show,
    #playerPosition.show,
    #playerBio.show,
    #playerAchievements.show {
      opacity: 1;
      transform: translateY(0);
    }

    #playerName.hidden-initial,
    #playerPosition.hidden-initial,
    #playerBio.hidden-initial,
    #playerAchievements.hidden-initial {
      display: none;
    }

    #playerName {
      font-size: 2em;
      font-weight: 700;
      background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    #playerPosition {
      font-size: 1.2em;
      font-weight: 500;
      margin-bottom: 1rem;
    }

    #playerBio {
      font-size: 1em;
      margin-bottom: 1rem;
    }

    #achievementsList {
      list-style-type: none;
      text-align: left;
      margin-left: 1.5rem;
    }

    #achievementsList li {
      position: relative;
      padding-left: 1.5rem;
      margin-bottom: 0.5rem;
      font-size: 0.9em;
    }

    #achievementsList li::before {
      content: '⚽';
      position: absolute;
      left: 0;
      color: var(--secondary-color);
    }

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

    @keyframes slideIn {
      from { opacity: 0; transform: translateX(-20px); }
      to { opacity: 1; transform: translateX(0); }
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      h1 {
        font-size: 2.2em;
      }

      .input-container {
        max-width: 90%;
      }

      button {
        padding: 10px 20px;
        font-size: 0.9em;
      }

      .quiz-question h3 {
        font-size: 1.3em;
      }

      #quizContainer,
      #resultContainer {
        padding: 1.5rem;
        max-width: 90%;
      }

      #playerName {
        font-size: 1.8em;
      }

      #playerPosition {
        font-size: 1.1em;
      }
    }

    @media (max-width: 480px) {
      h1 {
        font-size: 1.8em;
      }

      input[type="text"] {
        padding: 10px;
        font-size: 0.9em;
      }

      button {
        padding: 8px 16px;
        font-size: 0.85em;
      }

      .quiz-option {
        padding: 10px;
        font-size: 0.9em;
      }

      #quizContainer,
      #resultContainer {
        padding: 1rem;
      }

      #playerName {
        font-size: 1.5em;
      }

      #playerBio {
        font-size: 0.9em;
      }

      #achievementsList li {
        font-size: 0.85em;
      }
    }