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

  .container {
    min-height: 100vh;
    background: linear-gradient(135deg, #1ed760 0%, #1db954 30%, #ffffff 100%);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  }

  .header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 2rem;
    text-align: center;
    border-bottom: 3px solid #1db954;
  }

  .header h1 {
    color: #1db954;
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
  }

  .main-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
  }

  .search-box {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    margin-bottom: 2rem;
    border: 2px solid #1db954;
  }

  .search-box h2 {
    color: #1db954;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 600;
  }

  .search-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .form-group label {
    color: #2a2a2a;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  .form-group input {
    padding: 0.75rem 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f8f9fa;
    color: #2a2a2a;
  }

  .form-group input:focus {
    outline: none;
    border-color: #1db954;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(29, 185, 84, 0.2);
  }

  .form-group input:disabled {
    background: #e9ecef;
    cursor: not-allowed;
    opacity: 0.5;
  }

  .form-group input::placeholder {
    color: #999999;
  }

  .button-group {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
  }

  .btn {
    flex: 1;
    padding: 0.875rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  .btn-search {
    background: #1db954;
    color: #000000;
  }

  .btn-search:hover:not(:disabled) {
    background: #1ed760;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(30, 215, 96, 0.4);
  }

  .btn-search:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
  }

  .btn-clear {
    background: #666666;
    color: #ffffff;
  }

  .btn-clear:hover:not(:disabled) {
    background: #555555;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 102, 102, 0.4);
  }

  .btn-clear:disabled {
    opacity: 0.4;
    cursor: not-allowed;
  }

  .loading-message {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 3rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    text-align: center;
    border: 2px solid #1db954;
  }

  .spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(29, 185, 84, 0.2);
    border-top-color: #1db954;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
  }

  @keyframes spin {
    to {
      transform: rotate(360deg);
    }
  }

  .loading-message p {
    color: #1db954;
    font-size: 1.1rem;
    font-weight: 500;
  }

  .error-box {
    background: #fff5f5;
    border: 2px solid #e53e3e;
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: 0 5px 20px rgba(229, 62, 62, 0.2);
    animation: shake 0.5s;
  }

  @keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
  }

  .error-box p {
    color: #c53030;
    text-align: center;
    font-weight: 500;
    margin: 0;
    line-height: 1.5;
  }

  .lyrics-box {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    animation: fadeIn 0.5s ease;
    border: 2px solid #1db954;
  }

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

  .lyrics-box h3 {
    color: #1db954;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e0e0e0;
    font-weight: 600;
  }

  .lyrics-content {
    max-height: 500px;
    overflow-y: auto;
    padding-right: 1rem;
  }

  .lyrics-content::-webkit-scrollbar {
    width: 8px;
  }

  .lyrics-content::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
  }

  .lyrics-content::-webkit-scrollbar-thumb {
    background: #1db954;
    border-radius: 10px;
  }

  .lyrics-content::-webkit-scrollbar-thumb:hover {
    background: #1ed760;
  }

  .lyrics-line {
    color: #2a2a2a;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    margin: 0.2rem 0;
    padding: 0;
  }

  .lyrics-line:nth-child(4n) {
    margin-bottom: 1.2rem;
  }

  .hidden {
    display: none;
  }

  @media (max-width: 768px) {
    .header h1 {
      font-size: 1.8rem;
    }

    .search-box h2 {
      font-size: 1.2rem;
    }

    .button-group {
      flex-direction: column;
    }

    .btn {
      width: 100%;
    }

    .main-content {
      padding: 1rem;
    }

    .search-box,
    .lyrics-box {
      padding: 1.5rem;
    }
  }