:root {
      --primary-color: linear-gradient(135deg, #FF0050 0%, #25F4EE 100%);
      --primary-hover: linear-gradient(135deg, #d90045 0%, #1ae0e0 100%);
      --primary-solid: #FF0050;
      --primary-hover-solid: #d90045;
      --secondary-color: #25F4EE;
      --dark-color: linear-gradient(to bottom, #424242 0%, #121212 100%);
      --dark-solid: #212121;
      --light-color: #f8f9fa;
      --gray-color: #6c757d;
      --success-color: #28a745;
      --error-color: #dc3545;
    }

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

    body {
      font-family: 'Segoe UI', Roboto, sans-serif;
      background: var(--dark-color);
      color: white;
      line-height: 1.6;
      min-height: 100vh;
      padding: 0;
      margin: 0;
    }

    .container {
      max-width: 800px;
      margin: 0 auto;
      padding: 20px;
    }

    header {
      text-align: center;
      padding: 30px 0 20px;
    }

    .logo {
      font-size: 2.5rem;
      font-weight: 700;
      background: var(--primary-color);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      margin-bottom: 10px;
    }

    .tagline {
      color: var(--gray-color);
      margin-bottom: 30px;
      font-size: 1.1rem;
    }

    .download-box {
      background: rgba(255, 255, 255, 0.05);
      border-radius: 12px;
      padding: 25px;
      margin-bottom: 30px;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .input-group {
      margin-bottom: 20px;
    }

    label {
      display: block;
      margin-bottom: 8px;
      font-weight: 500;
    }

    input[type="text"] {
      width: 100%;
      padding: 15px;
      font-size: 1rem;
      border: 2px solid rgba(255, 255, 255, 0.2);
      border-radius: 8px;
      background: rgba(0, 0, 0, 0.3);
      color: white;
      transition: all 0.3s;
    }

    input[type="text"]:focus {
      outline: none;
      border-color: var(--primary-solid);
      box-shadow: 0 0 0 3px rgba(255, 0, 80, 0.2);
    }

    .example {
      font-size: 0.9rem;
      color: var(--gray-color);
      margin-top: 5px;
    }

    .btn {
      display: inline-block;
      padding: 12px 25px;
      font-size: 1rem;
      font-weight: 600;
      text-align: center;
      text-decoration: none;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.3s;
      border: none;
    }

    .btn-primary {
      background: var(--primary-color);
      color: white;
    }

    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(255, 0, 80, 0.3);
    }

    .btn-block {
      display: block;
      width: 100%;
    }

    #spinner {
      display: none;
      text-align: center;
      margin: 20px 0;
    }

    .spinner {
      border: 4px solid rgba(255, 255, 255, 0.1);
      border-top: 4px solid var(--primary-solid);
      border-radius: 50%;
      width: 40px;
      height: 40px;
      animation: spin 1s linear infinite;
      margin: 0 auto 15px;
    }

    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }

    #result {
      margin-top: 20px;
    }

    .video-preview {
      background: rgba(0, 0, 0, 0.3);
      border-radius: 8px;
      padding: 15px;
      margin-bottom: 20px;
      text-align: center;
    }

    .video-player {
      position: relative;
      width: 100%;
      max-width: 400px;
      border-radius: 8px;
      margin: 15px auto;
      overflow: hidden;
    }

    .video-player video {
      width: 100%;
      border-radius: 8px;
      display: block;
    }

    .play-pause-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(0,0,0,0.3);
      opacity: 0;
      transition: opacity 0.3s ease;
      pointer-events: none;
    }
    
    .play-pause-overlay i {
      font-size: 50px;
      color: white;
      text-shadow: 0 2px 10px rgba(0,0,0,0.5);
      transform: scale(0.8);
      transition: transform 0.3s ease;
    }
    
    .video-player.show-overlay .play-pause-overlay {
      opacity: 1;
    }
    
    .video-player.show-overlay .play-pause-overlay i {
      transform: scale(1);
    }

    .video-info {
      margin: 15px 0;
    }

    .download-options {
      display: flex;
      gap: 10px;
      justify-content: center;
      flex-wrap: wrap;
      margin-top: 20px;
    }

    .download-btn {
      background: linear-gradient(135deg, #25F4EE 0%, #1ae0e0 100%);
      color: black;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: 6px;
      text-decoration: none;
      transition: all 0.3s;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .download-btn:hover {
      background: linear-gradient(135deg, #1ae0e0 0%, #0dcaca 100%);
      transform: translateY(-2px);
    }

    .download-btn-audio {
      background: linear-gradient(135deg, #FE2C55 0%, #ff6b81 100%);
    }

    .download-btn-audio:hover {
      background: linear-gradient(135deg, #e0244b 0%, #e85a70 100%);
    }

    .features {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
      margin: 40px 0;
    }

    .feature-card {
      background: rgba(255, 255, 255, 0.05);
      padding: 20px;
      border-radius: 8px;
      transition: all 0.3s;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      background: rgba(255, 255, 255, 0.1);
    }

    .feature-icon {
      font-size: 2rem;
      margin-bottom: 15px;
      background: var(--primary-color);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .social-proof {
      background: rgba(255, 255, 255, 0.05);
      padding: 25px;
      border-radius: 12px;
      margin: 30px 0;
      text-align: center;
    }

    .counter {
      font-size: 2rem;
      font-weight: 700;
      background: var(--primary-color);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .testimonials {
      margin-top: 20px;
    }

    .testimonial {
      background: rgba(255, 255, 255, 0.1);
      padding: 15px;
      border-radius: 8px;
      margin: 10px 0;
      font-style: italic;
    }

    .guide-steps {
      margin: 30px 0;
    }

    .step {
      display: flex;
      align-items: flex-start;
      margin-bottom: 20px;
    }

    .step-number {
      background: var(--primary-color);
      color: white;
      width: 30px;
      height: 30px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: 15px;
      flex-shrink: 0;
    }

    .faq {
      margin: 40px 0;
    }

    .faq-item {
      background: rgba(255, 255, 255, 0.05);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
    }

    .faq-question {
      padding: 15px 20px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
    }

    .faq-answer {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .faq-item.active .faq-answer {
      padding: 0 20px 20px;
      max-height: 500px;
    }

    .floating-btn {
      position: fixed;
      bottom: 20px;
      right: 20px;
      z-index: 100;
      display: none;
      background: var(--primary-color);
      width: 60px;
      height: 60px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }

    footer {
      text-align: center;
      padding: 30px 0;
      color: var(--gray-color);
      font-size: 0.9rem;
    }

    .error-message {
      background: rgba(220, 53, 69, 0.2);
      border-left: 4px solid var(--error-color);
      padding: 15px;
      border-radius: 4px;
      margin: 15px 0;
    }

    .success-message {
      background: rgba(40, 167, 69, 0.2);
      border-left: 4px solid var(--success-color);
      padding: 15px;
      border-radius: 4px;
      margin: 15px 0;
    }

    @media (max-width: 768px) {
      .container {
        padding: 15px;
      }
      
      .logo {
        font-size: 2rem;
      }
      
      .download-box {
        padding: 20px;
      }
      
      .floating-btn {
        display: flex;
      }
    }

    /* AdSense container styling */
    .ad-container {
      margin: 30px 0;
      text-align: center;
      background: rgba(255, 255, 255, 0.05);
      padding: 20px;
      border-radius: 8px;
    }

    /* Clipboard notification */
    .clipboard-notification {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-solid);
      color: white;
      padding: 10px 20px;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      opacity: 0;
      transition: opacity 0.3s;
    }

    .clipboard-notification.show {
      opacity: 1;
    }

    /* Placeholder for video */
    .video-placeholder {
      width: 100%;
      max-width: 400px;
      height: 500px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 8px;
      margin: 15px auto;
      display: flex;
      align-items: center;
      justify-content: center;
      color: rgba(255, 255, 255, 0.5);
      font-size: 1.2rem;
    }