* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: "Poppins", sans-serif;
      }

      :root {
        --primary-color: #2041ff;
        --secondary-color: #6ea3ff;
        --accent-color: #ffffff;
        --light-color: #aff3ff;
        --text-color: #000000;
        --white: #ffffff;
        --error-color: #fe615c;
        --success-color: #66cc99;
        --card-bg: rgba(255, 255, 255, 0.9);
        --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
      }

      /* Header styles */
      .header-menu {
        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);
        border-bottom: 2px solid #fff;
        transition: all 0.3s ease;
      }

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

      .logo {
        font-size: 28px;
        font-family: "Poppins", 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;
        display: flex;
      }

      .header-menu .navigation ul li {
        position: relative;
      }

      .header-menu .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-menu .navigation ul li a:hover {
        background-color: rgba(255, 255, 255, 0.733);
        transform: translateY(-2px);
        color: var(--primary-color);
      }

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

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

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

        .header-menu {
          padding: 15px 10%;
        }

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

        .header-menu .navigation ul {
          flex-direction: column;
        }

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

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

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

      /* Body styles */
      body {
        font-family: "Poppins", sans-serif;
        background: linear-gradient(
          135deg,
          hsl(215, 100%, 86%),
          #3b97ff,
          #5c9bee
        );
        margin: 0;
        padding: 0;
        padding-top: 80px;
        min-height: 100vh;
        color: var(--text-color);
        background-size: 400% 400%;
        animation: gradientBG 15s ease infinite;
      }

      @keyframes gradientBG {
        0% {
          background-position: 0% 50%;
        }
        50% {
          background-position: 100% 50%;
        }
        100% {
          background-position: 0% 50%;
        }
      }

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

      /* Game styles */
      .game-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
      }

      h1 {
        color: var(--white);
        text-align: center;
        text-transform: uppercase;
        font-size: 2.5rem;
        margin-bottom: 20px;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
      }

      .instructions {
        background-color: var(--card-bg);
        border-radius: 12px;
        padding: 20px;
        margin-bottom: 30px;
        box-shadow: var(--shadow);
        text-align: center;
        font-size: 1.1rem;
        line-height: 1.6;
      }

      .container {
        display: flex;
        justify-content: space-around;
        flex-wrap: wrap;
        gap: 20px;
        margin-bottom: 30px;
      }

      .column {
        background-color: var(--card-bg);
        border-radius: 12px;
        padding: 20px;
        width: 45%;
        min-width: 300px;
        box-shadow: var(--shadow);
        transition: transform 0.3s ease;
      }

      .column:hover {
        transform: translateY(-5px);
      }

      .column h2 {
        color: var(--primary-color);
        margin-bottom: 15px;
        text-align: center;
        font-size: 1.5rem;
        border-bottom: 2px solid var(--light-color);
        padding-bottom: 10px;
      }

      .situation,
      .advice {
        padding: 12px 15px;
        margin: 10px 0;
        border-radius: 8px;
        cursor: grab;
        transition: all 0.3s ease;
        font-size: 1rem;
      }

      .situation {
        background-color: #e3f2fd;
        border-left: 5px solid #2196f3;
      }

      .situation:hover {
        background-color: #bbdefb;
        transform: translateX(5px);
      }

      .advice {
        background-color: #fff8e1;
        border-left: 5px solid #ffc107;
      }

      .advice:hover {
        background-color: #ffecb3;
        transform: translateX(5px);
      }

      .matches {
        margin-top: 30px;
        background-color: var(--card-bg);
        padding: 20px;
        border-radius: 12px;
        box-shadow: var(--shadow);
      }

      .matches h2 {
        color: var(--primary-color);
        margin-bottom: 15px;
        text-align: center;
        font-size: 1.5rem;
      }

      .match {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 12px 15px;
        margin: 8px 0;
        background-color: #e8f5e9;
        border-radius: 8px;
        transition: all 0.3s ease;
        font-size: 1rem;
      }

      .match:hover {
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      }

      .correct {
        background-color: #c8e6c9 !important;
        border-left: 5px solid var(--success-color);
      }

      .incorrect {
        background-color: #ffcdd2 !important;
        border-left: 5px solid var(--error-color);
      }

      .dragging {
        opacity: 0.5;
        transform: scale(0.98);
      }

      .button-container {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin: 30px 0;
      }

      button {
        padding: 12px 25px;
        background: linear-gradient(
          135deg,
          var(--primary-color),
          var(--secondary-color)
        );
        color: white;
        border: none;
        border-radius: 8px;
        cursor: pointer;
        font-size: 1rem;
        font-weight: 600;
        transition: all 0.3s ease;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      }

      button:hover {
        transform: translateY(-3px);
        box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
      }

      button:active {
        transform: translateY(1px);
      }

      #reset-btn {
        background: linear-gradient(135deg, #ff5252, #ff7675);
      }

      .result {
        text-align: center;
        font-weight: bold;
        margin-top: 20px;
        padding: 15px;
        border-radius: 8px;
        font-size: 1.1rem;
        transition: all 0.3s ease;
      }

      .success-message {
        background-color: var(--success-color);
        color: white;
        padding: 20px;
        border-radius: 12px;
        margin-top: 20px;
        text-align: center;
        font-size: 1.2rem;
        font-weight: 600;
        box-shadow: var(--shadow);
        display: none;
        animation: fadeIn 0.5s ease;
      }

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

      .confetti {
        position: fixed;
        width: 10px;
        height: 10px;
        background-color: #f00;
        border-radius: 50%;
        pointer-events: none;
        z-index: 1000;
      }

      @media (max-width: 768px) {
        .container {
          flex-direction: column;
        }

        .column {
          width: 100%;
        }

        h1 {
          font-size: 2rem;
        }
      }