:root {
          --primary-color: #5b6abf;
          --secondary-color: #9c64a6;
          --accent-color: #6a5acd;
          --light-color: #e6e6fa;
          --success-color: #4caf50;
          --error-color: #f44336;
          --text-color: #2c3e50;
          --white: #ffffff;
        }

        /* Estilos del Header mejorado */
        .header {
          position: fixed;
          top: 0;
          left: 0;
          right: 0;
          background: linear-gradient(
            135deg,
            var(--primary-color),
            var(--secondary-color)
          );
          padding: 0 10%;
          display: flex;
          align-items: center;
          justify-content: space-between;
          z-index: 1000;
          box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
          transition: all 0.3s ease;
        }

        .header:hover {
          box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
        }

        .logo {
          font-size: 28px;
          font-family: "Montserrat", sans-serif;
          font-weight: 700;
          color: var(--white);
          text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
          letter-spacing: 1px;
        }

        .navigation ul {
          list-style: none;
          margin: 0;
          padding: 0;
        }

        .header .navigation ul li {
          float: left;
          position: relative;
        }

        .header .navigation ul li a {
          font-family: "Poppins", sans-serif;
          font-size: 16px;
          font-weight: 500;
          color: var(--white);
          text-decoration: none;
          padding: 22px 20px;
          display: block;
          transition: all 0.3s ease;
        }

        .header .navigation ul li a:hover {
          background-color: rgba(255, 255, 255, 0.15);
          transform: translateY(-2px);
        }

        .header .navigation ul li ul {
          position: absolute;
          right: 0;
          width: 220px;
          background: rgba(255, 255, 255, 0.95);
          border-radius: 0 0 8px 8px;
          box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
          display: none;
          overflow: hidden;
        }

        .header .navigation ul li ul li a {
          color: var(--text-color);
          padding: 12px 20px;
          font-size: 14px;
        }

        .header .navigation ul li ul li a:hover {
          background-color: var(--light-color);
          color: var(--primary-color);
        }

        .header .navigation ul li:hover > ul {
          display: initial;
          animation: fadeIn 0.3s ease-out;
        }

        #toggle,
        .header label {
          display: none;
          cursor: pointer;
        }

        .menu {
          width: 28px;
          height: 28px;
          filter: brightness(0) invert(1);
        }

        @media (max-width: 950px) {
          .header label {
            display: initial;
          }

          .header {
            padding: 15px 10%;
          }

          .header .navigation {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--primary-color);
            display: none;
            border-radius: 0 0 12px 12px;
          }

          .header .navigation ul li {
            width: 100%;
          }

          .header .navigation ul li a {
            padding: 12px 20px;
          }

          .header .navigation ul li ul {
            position: relative;
            width: 100%;
            left: 0;
            background: rgba(255, 255, 255, 0.1);
          }

          .header .navigation ul li ul li a {
            padding-left: 30px;
          }

          #toggle:checked ~ .navigation {
            display: block;
            animation: slideDown 0.4s ease-out;
          }
        }

        /* Estilos del cuerpo y fondo */
        body {
          font-family: "Poppins", sans-serif;
          background: linear-gradient(135deg, #e0f7fa, #d1c4e9, #b3e5fc);
          margin: 0;
          padding: 0;
          padding-top: 80px;
          min-height: 100vh;
          color: var(--text-color);
          background-size: 400% 400%;
          animation: gradientBG 15s ease infinite;
          display: flex;
          flex-direction: column;
          align-items: center; /* Centramos todo el contenido horizontalmente */
        }

        /* Animación de fondo */
        @keyframes gradientBG {
          0% {
            background-position: 0% 50%;
          }
          50% {
            background-position: 100% 50%;
          }
          100% {
            background-position: 0% 50%;
          }
        }

        /* Animaciones */
        @keyframes fadeIn {
          from {
            opacity: 0;
            transform: translateY(-10px);
          }
          to {
            opacity: 1;
            transform: translateY(0);
          }
        }

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

        @keyframes pulse {
          0% {
            transform: scale(1);
          }
          50% {
            transform: scale(1.05);
          }
          100% {
            transform: scale(1);
          }
        }

        @keyframes bounce {
          0%,
          20%,
          50%,
          80%,
          100% {
            transform: translateY(0);
          }
          40% {
            transform: translateY(-15px);
          }
          60% {
            transform: translateY(-7px);
          }
        }

        /* Título principal centrado */
        h1 {
          color: black;
          text-align: center;
          font-family: "Poppins", sans-serif;
          width: 100%;
        }

        /* Estilos juego imagen borrosa - CENTRADO */
        .container {
            max-width: 800px;
            margin: 0 auto;
            background-color: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            text-align: center; /* Todo el texto centrado */
        }

        .instructions {
            text-align: left;
            margin-bottom: 20px;
            padding: 10px;
            background-color: rgba(255, 255, 255, 0.7);
            border-radius: 8px;
            border-left: 4px solid var(--primary-color);
        }

        .game-area {
            margin: 20px auto; /* Centrar área de juego */
            display: flex;
            flex-direction: column;
            align-items: center; /* Centrar elementos horizontalmente */
        }

        .blurry-image {
            width: 300px;
            height: 300px;
            margin: 0 auto; /* Centrar la imagen */
            background-size: cover;
            background-position: center;
            border: 3px solid #ddd;
            border-radius: 10px;
            filter: blur(10px);
            transition: filter 0.5s ease;
        }

        .options {
            display: flex;
            flex-wrap: wrap;
            justify-content: center; /* Centrar opciones */
            gap: 10px;
            margin-top: 20px;
            width: 100%; /* Usar todo el ancho disponible */
        }

        .option-btn {
            padding: 10px 20px;
            font-size: 16px;
            background-color: #4CAF50;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        .option-btn:hover {
            background-color: #45a049;
        }

        .score {
            font-size: 18px;
            margin: 20px 0;
            font-weight: bold;
        }

        .feedback {
            font-size: 18px;
            font-weight: bold;
            margin: 10px 0;
            min-height: 27px;
        }

        .next-btn {
            padding: 10px 20px;
            font-size: 16px;
            background-color: #2196F3;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s;
            display: none;
        }

        .next-btn:hover {
            background-color: #0b7dda;
        }


        /* Estilos para el resumen final */
        .summary-container {
            display: none;
            margin-top: 20px;
            padding: 15px;
            background-color: rgba(255, 255, 255, 0.9);
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            max-width: 600px;
            width: 100%;
            animation: fadeIn 0.5s ease;
        }

        .summary-container h2 {
            color: var(--primary-color);
            margin-top: 0;
        }

        .summary-list {
            list-style-type: none;
            padding: 0;
            margin: 0;
            text-align: left;
        }

        .summary-list li {
            padding: 8px 10px;
            margin-bottom: 5px;
            border-radius: 4px;
            display: flex;
            align-items: center;
        }

        .correct-item {
            background-color: rgba(76, 175, 80, 0.2);
            border-left: 3px solid var(--success-color);
        }

        .incorrect-item {
            background-color: rgba(244, 67, 54, 0.2);
            border-left: 3px solid var(--error-color);
        }

        .summary-icon {
            margin-right: 10px;
            font-size: 18px;
        }

        .play-again-btn {
            padding: 10px 20px;
            font-size: 16px;
            background-color: var(--accent-color);
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s;
            margin-top: 15px;
        }

        .play-again-btn:hover {
            background-color: #574fb8;
        }