/* ==================== LIGHT THEME MODERN CSS ==================== */
  * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      transition: all 0.2s ease;
  }

  body {
      background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
      font-family: 'Poppins', 'Inter', sans-serif;
      min-height: 100vh;
      /* padding: 20px; */

  }

  /* Main Container with 3D Border & Shadow - LIGHT THEME */
  .quiz-container {
      max-width: 1200px;
      width: 100%;
      background: linear-gradient(145deg, #ffffff, #f8fafc);
      border-radius: 14px;
      padding: 30px 25px;
      box-shadow: 20px 20px 40px rgba(0, 0, 0, 0.08), -10px -10px 30px rgba(255, 255, 255, 0.7), 0 0 0 1px rgba(0, 0, 0, 0.02) inset;
      border: 1px solid rgba(255, 255, 255, 0.8);
      transition: transform 0.3s, box-shadow 0.3s;
      margin: 10px auto;
      /* display: flex;
      flex-direction: column; */

  }

  .quiz-container:hover {
      box-shadow: 25px 25px 50px rgba(0, 0, 0, 0.12), -15px -15px 35px rgba(255, 255, 255, 0.8), 0 0 0 2px rgba(99, 102, 241, 0.2) inset;
      transform: translateY(-5px);
  }

  /* Heading with Gradient */
  .quiz-container h1 {
      text-align: center;
      font-size: 2.5rem;
      font-weight: 800;
      background: linear-gradient(135deg, #4f46e5, #7c3aed, #ec4899);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      text-shadow: 0 2px 10px rgba(79, 70, 229, 0.15);
      letter-spacing: -0.5px;
      margin-bottom: 20px;
  }

  /* 3D Button Style - Light Theme */
  .music-button,
  .no-answer,
  #optionButtons button,
  #startButton {
      background: linear-gradient(145deg, #ffffff, #f0f2f5);
      border: none;
      padding: 14px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: 14px;
      color: #1e293b;
      cursor: pointer;
      box-shadow: 0 6px 0 #cbd5e1;
      transform: translateY(-2px);
      transition: all 0.1s linear;
      font-family: inherit;
      letter-spacing: 1px;
      border: 1px solid rgba(255, 255, 255, 0.5);
  }

  .music-button:active,
  .no-answer:active,
  #optionButtons button:active,
  #startButton:active {
      transform: translateY(4px);
      box-shadow: 0 2px 0 #cbd5e1;
  }

  .music-button:hover,
  #startButton:hover,
  .no-answer:hover,
  #optionButtons button:hover {
      background: linear-gradient(145deg, #ffffff, #e8ecf5);
      color: #4f46e5;
      box-shadow: 0 6px 0 #b9c3d4;
      transform: translateY(-3px);
  }

  #startButton {
      font-size: 1.2rem;
      padding: 18px 40px;
      background: linear-gradient(145deg, #4f46e5, #6366f1);
      color: white;
      box-shadow: 0 10px 0 #312e81;
      margin: 20px auto;
      display: block;
      border: none;
  }

  #startButton:hover {
      background: linear-gradient(145deg, #6366f1, #818cf8);
      color: white;
      box-shadow: 0 10px 0 #4338ca;
  }

  /* Quiz Area Layout */
  .quiz-area {
      display: flex;
      flex-wrap: wrap;
      gap: 25px;
      margin-top: 20px;
  }

  /* Question Panel - Glassmorphism Light */
  .question-panel {
      flex: 2;
      min-width: 260px;
      background: rgba(255, 255, 255, 0.7);
      backdrop-filter: blur(8px);
      border-radius: 14px;
      padding: 25px;
      border: 1px solid rgba(255, 255, 255, 0.9);
      box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  }

  /* Score Panel - Vibrant Light */
  .score-panel {
      flex: 1;
      min-width: 220px;
      background: linear-gradient(145deg, #ffffff, #f8fafc);
      border-radius: 14px;
      padding: 20px;
      border: 1px solid #e2e8f0;
      box-shadow: 10px 10px 20px rgba(0, 0, 0, 0.05), -5px -5px 15px rgba(255, 255, 255, 0.8);
  }

  /* Group Turn & Timer */
  .group-turn {
      font-size: 1.3rem;
      font-weight: 700;
      background: linear-gradient(120deg, #4f46e5, #ec4899);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      display: inline-block;
      padding: 5px 15px;
      border-radius: 14px;
      margin-bottom: 20px;
      letter-spacing: 1px;
  }

  #timer {
      font-size: 1.1rem;
      background: #f1f5f9;
      display: inline-block;
      margin-left: 20px;
      padding: 5px 20px;
      border-radius: 10px;
      color: #4f46e5;
      font-weight: 700;
      box-shadow: inset 2px 2px 5px #cbd5e1, inset -3px -3px 7px #ffffff;
      -webkit-border-radius: 10px;
      -moz-border-radius: 10px;
      -ms-border-radius: 10px;
      -o-border-radius: 10px;
  }

  /* Question Box */
  .question {
      font-size: 1.2rem;
      font-weight: 600;
      background: linear-gradient(145deg, #f8fafc, #eff3f8);
      padding: 20px;
      border-radius: 14px;
      margin: 20px 0;
      color: #1e293b;
      line-height: 1.4;
      border-left: 6px solid #4f46e5;
      box-shadow: 8px 8px 16px rgba(0, 0, 0, 0.05), -4px -4px 12px #ffffff;
  }

  /* Options Grid */
  .options {
      display: flex;
      flex-direction: column;
      gap: 15px;
  }

  #optionButtons {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 15px;
  }

  #optionButtons button {
      text-align: left;
      padding: 14px 20px;
      background: linear-gradient(145deg, #ffffff, #f1f5f9);
      font-size: 1rem;
      font-weight: 500;
      border-radius: 14px;
      color: #334155;
      border: 1px solid #e2e8f0;
  }

  #optionButtons button:hover {
      background: linear-gradient(145deg, #eef2ff, #e0e7ff);
      color: #4f46e5;
      border-color: #c7d2fe;
  }

  #optionButtons button:nth-child(1) {
      background: linear-gradient(135deg, #1E90FF, #5DADE2);
  }

  #optionButtons button:nth-child(2) {
      background: linear-gradient(135deg, #00C4B4, #26A69A);
  }

  #optionButtons button:nth-child(3) {
      background: linear-gradient(135deg, #E63946, #FF6F61);
  }

  #optionButtons button:nth-child(4) {
      background: linear-gradient(135deg, #F1C40F, #FFC107);
  }

  #optionButtons button:hover {
      transform: scale(1.05);
      background: linear-gradient(135deg, #FF6F61, #F1C40F);
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.25), 0 8px 24px rgba(0, 0, 0, 0.2);
  }

  #optionButtons button:focus {
      outline: 2px solid #00C4B4;
      outline-offset: 2px;
  }

  /* No Answer Button */
  .no-answer {
      background: linear-gradient(145deg, #fee2e2, #fecaca);
      color: #dc2626;
      box-shadow: 0 6px 0 #b91c1c;
      width: 100%;
      margin-top: 10px;
  }

  .no-answer:hover {
      background: linear-gradient(145deg, #fecaca, #fca5a5);
      color: #991b1b;
  }

  /* Scoreboard */
  .scoreboard h3 {
      color: #4f46e5;
      font-size: 1.2rem;
      border-bottom: 2px dashed #c7d2fe;
      display: inline-block;
      margin-bottom: 20px;
  }

  .scoreboard {
      margin-top: 1.5rem;
      padding: 1rem;
      border-radius: 0.5rem;
      background-color: #FFFFFF;
      box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
      animation: fadeIn 0.5s ease-in;
  }

  .score-box {
      display: flex;
      flex-direction: column;
      gap: 12px;
  }

  .score-box p {
      background: #ffffff;
      padding: 12px 18px;
      border-radius: 14px;
      font-weight: 600;
      font-size: 1.1rem;
      color: #1e293b;
      display: flex;
      justify-content: space-between;
      border: 1px solid #e2e8f0;
      box-shadow: 5px 5px 12px rgba(0, 0, 0, 0.04), -3px -3px 8px #ffffff;
  }

  .score-box span {
      font-weight: 800;
      font-size: 1.2rem;
      background: linear-gradient(135deg, #4f46e5, #ec4899);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
  }

  /* Music Control */
  .music-control {
      margin-top: 25px;
      text-align: center;
  }

  /* Custom Modal - Light Theme */
  .modal-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.3);
      backdrop-filter: blur(8px);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 1000;
      visibility: hidden;
      opacity: 0;
      transition: visibility 0.2s, opacity 0.2s;
  }

  .modal-overlay.active {
      visibility: visible;
      opacity: 1;
  }

  .modal-card {
      background: linear-gradient(145deg, #ffffff, #fefefe);
      max-width: 500px;
      width: 90%;
      border-radius: 14px;
      padding: 30px 25px;
      text-align: center;
      box-shadow: 30px 30px 50px rgba(0, 0, 0, 0.1), -15px -15px 30px rgba(255, 255, 255, 0.8), 0 0 0 1px rgba(79, 70, 229, 0.2) inset;
      transform: scale(0.9);
      transition: transform 0.2s;
      border: 1px solid rgba(255, 255, 255, 0.9);
  }

  .modal-overlay.active .modal-card {
      transform: scale(1);
  }

  .modal-card h3 {
      font-size: 2rem;
      background: linear-gradient(135deg, #4f46e5, #ec4899);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      margin-bottom: 15px;
  }

  .modal-card p {
      font-size: 1.2rem;
      color: #334155;
      margin: 15px 0;
      line-height: 1.5;
  }

  .modal-card button {
      background: linear-gradient(145deg, #4f46e5, #6366f1);
      border: none;
      padding: 12px 28px;
      font-size: 1.1rem;
      font-weight: bold;
      border-radius: 14px;
      margin-top: 15px;
      cursor: pointer;
      color: white;
      box-shadow: 0 5px 0 #312e81;
      transition: 0.05s linear;
  }

  .modal-card button:active {
      transform: translateY(3px);
      box-shadow: 0 2px 0 #312e81;
  }

  /* Resume Banner - Light */
  .resume-banner {
      background: linear-gradient(95deg, #eef2ff, #e0e7ff);
      border-radius: 14px;
      padding: 12px 20px;
      margin: 0 0 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      border: 1px solid #c7d2fe;
      box-shadow: 8px 8px 16px rgba(0, 0, 0, 0.05), -4px -4px 12px #ffffff;
  }

  .resume-banner p {
      color: #4f46e5;
      font-weight: 600;
  }

  .resume-btn {
      background: linear-gradient(145deg, #10b981, #059669);
      color: white;
      font-weight: bold;
      padding: 8px 20px;
      border-radius: 14px;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 0 #047857;
  }

  .resume-btn:hover {
      background: linear-gradient(145deg, #34d399, #10b981);
      transform: translateY(-2px);
      box-shadow: 0 6px 0 #047857;
  }

  .reset-resume {
      background: linear-gradient(145deg, #f97316, #ea580c);
      box-shadow: 0 4px 0 #c2410c;
  }

  .reset-resume:hover {
      background: linear-gradient(145deg, #fb923c, #f97316);
  }

  .hide {
      display: none;
  }

  /* Footer */
  footer {
      text-align: center;
      margin-top: 30px;
      color: #64748b;
      font-size: 0.8rem;
      font-weight: 500;
  }

  /* ==================== RESPONSIVE DESIGN ==================== */
  @media (max-width: 800px) {
      .quiz-container {
          padding: 20px 15px;
      }

      .quiz-container h1 {
          font-size: 1.9rem;
      }

      .question {
          font-size: 1.2rem;
          padding: 15px;
      }

      .group-turn {
          font-size: 1.3rem;
          display: block;
          margin-bottom: 10px;
      }

      #timer {
          font-size: 1.2rem;
          margin-left: 0;
          display: block;
          margin-top: 10px;
          text-align: center;
      }

      #optionButtons {
          grid-template-columns: 1fr;
      }

      .score-box p {
          font-size: 1rem;
      }

      .modal-card h3 {
          font-size: 1.5rem;
      }

      .music-button,
      #optionButtons button {
          padding: 10px 16px;
          font-size: 0.9rem;
      }
  }

  @media (max-width: 480px) {
      .quiz-area {
          flex-direction: column;
      }

      .music-button,
      #startButton {
          padding: 10px 18px;
          font-size: 1rem;
      }

      #startButton {
          font-size: 1.3rem;
          padding: 14px 30px;
      }

      .question-panel,
      .score-panel {
          padding: 15px;
      }

      .score-box span {
          font-size: 1.3rem;
      }

      .resume-banner {
          flex-direction: column;
          text-align: center;
      }
  }

  /* Tablet Landscape */
  @media (min-width: 769px) and (max-width: 1024px) {
      .quiz-container {
          padding: 25px 20px;
      }

      .question {
          font-size: 1.4rem;
      }

      #optionButtons {
          grid-template-columns: repeat(2, 1fr);
      }
  }

  /* Additional 3D Hover Effects */
  .score-box p:hover {
      transform: translateX(5px);
      box-shadow: 8px 8px 15px rgba(0, 0, 0, 0.08), -4px -4px 10px #ffffff;
  }

  #optionButtons button:focus-visible,
  .music-button:focus-visible {
      outline: 2px solid #4f46e5;
      outline-offset: 2px;
  }