:root {
          --primary: #4f46e5;
          --primary-dark: #4338ca;
          --success: #22c55e;
          --warning: #eab308;
          --gray-50: #f9fafb;
          --gray-100: #f3f4f6;
          --gray-200: #e5e7eb;
          --gray-300: #d1d5db;
          --gray-700: #374151;
          --gray-800: #1f2937;
        }
    
        * {
          margin: 0;
          padding: 0;
          box-sizing: border-box;
        }
    
        body {
          font-family: 'Inter', sans-serif;
          background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
          min-height: 100vh;
          padding: 2rem;
          color: var(--gray-800);
        }
    
        .container {
          max-width: 800px;
          margin: 0 auto;
        }
        .header {
          text-align: center;
          margin-bottom: 2.5rem;
        }
    
        .header h1 {
          font-size: 2.25rem;
          font-weight: 700;
          color: var(--gray-800);
          margin-bottom: 0.75rem;
        }
    
        .header p {
          color: var(--gray-700);
          font-size: 1.125rem;
        }
    
        .card {
          background: white;
          border-radius: 1rem;
          padding: 1.5rem;
          box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1),
                      0 2px 4px -2px rgb(0 0 0 / 0.1);
          margin-bottom: 1.5rem;
          transition: all 0.3s ease;
        }
    
        .card:hover {
          transform: translateY(-2px);
          box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1),
                      0 4px 6px -4px rgb(0 0 0 / 0.1);
        }
    
        .input-group {
          margin-bottom: 1.5rem;
        }
    
        .input-header {
          display: flex;
          align-items: center;
          gap: 0.5rem;
          margin-bottom: 0.75rem;
        }
    
        .input-header i {
          font-size: 1.5rem;
          color: var(--primary);
        }
    
        .input-header label {
          font-weight: 600;
          color: var(--gray-700);
          font-size: 1.125rem;
        }
    
        textarea {
          width: 100%;
          padding: 0.75rem;
          border: 2px solid var(--gray-200);
          border-radius: 0.75rem;
          font-size: 1rem;
          font-family: 'Inter', sans-serif;
          resize: vertical;
          transition: all 0.2s ease;
        }
    
        textarea:focus {
          outline: none;
          border-color: var(--primary);
          box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }
    
        button {
          width: 100%;
          padding: 1rem;
          background: var(--primary);
          color: white;
          border: none;
          border-radius: 0.75rem;
          font-size: 1.125rem;
          font-weight: 600;
          cursor: pointer;
          transition: all 0.2s ease;
          display: flex;
          align-items: center;
          justify-content: center;
          gap: 0.5rem;
        }
    
        button:hover {
          background: var(--primary-dark);
        }
    
        button i {
          font-size: 1.25rem;
        }
    
        .result-card {
          display: none;
          animation: slideIn 0.3s ease-out;
        }

        .result-card.active {
          display: block;
        }
    
        .percentage {
          text-align: center;
          margin-bottom: 1.5rem;
        }
    
        .percentage-circle {
          width: 150px;
          height: 150px;
          margin: 0 auto;
          position: relative;
          background: conic-gradient(var(--primary) var(--percentage), var(--gray-100) 0);
          border-radius: 50%;
          display: flex;
          align-items: center;
          justify-content: center;
        }
    
        .percentage-circle::before {
          content: '';
          position: absolute;
          width: 110px;
          height: 110px;
          background: white;
          border-radius: 50%;
        }
    
        .percentage-value {
          position: relative;
          font-size: 2rem;
          font-weight: 700;
          color: var(--primary);
        }
    
        .result-section {
          background: var(--gray-50);
          border-radius: 0.75rem;
          padding: 1rem;
          margin-bottom: 1rem;
        }
    
        .result-section h3 {
          font-size: 1rem;
          font-weight: 600;
          color: var(--gray-700);
          margin-bottom: 0.5rem;
        }
    
        .tags {
          display: flex;
          flex-wrap: wrap;
          gap: 0.5rem;
        }
    
        .tag {
          background: white;
          padding: 0.25rem 0.75rem;
          border-radius: 1rem;
          font-size: 0.875rem;
          border: 1px solid var(--gray-200);
        }
    
        /* Popup Geral */
        .popup-overlay {
          display: none;
          position: fixed;
          top: 0;
          left: 0;
          right: 0;
          bottom: 0;
          background: rgba(0, 0, 0, 0.5);
          backdrop-filter: blur(4px);
          z-index: 1000;
          animation: fadeIn 0.3s ease-out;
        }
    
        .popup {
          position: fixed;
          top: 50%;
          left: 50%;
          transform: translate(-50%, -50%);
          background: white;
          padding: 2rem;
          border-radius: 1rem;
          max-width: 90%;
          width: 400px;
          text-align: center;
          box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1),
                      0 8px 10px -6px rgb(0 0 0 / 0.1);
          animation: popIn 0.3s ease-out;
        }
    
        .popup h2 {
          color: var(--gray-800);
          font-size: 1.5rem;
          margin-bottom: 1rem;
        }
    
        .popup p {
          color: var(--gray-700);
          margin-bottom: 1.5rem;
          line-height: 1.5;
        }
    
        .popup-buttons {
          display: flex;
          gap: 1rem;
          justify-content: center;
          flex-wrap: wrap;
        }
    
        .popup-button {
          padding: 0.75rem 1.5rem;
          border-radius: 0.5rem;
          font-weight: 600;
          cursor: pointer;
          transition: all 0.2s ease;
        }
    
        .popup-button.primary {
          background: var(--primary);
          color: white;
          border: none;
        }
    
        .popup-button.primary:hover {
          background: var(--primary-dark);
        }
    
        .popup-button.secondary {
          background: var(--gray-100);
          color: var(--gray-700);
          border: 1px solid var(--gray-200);
        }
        .popup-button.secondary:hover {
          background: var(--gray-200);
        }
    
        /* New styles for loading spinner */
        .loading-spinner {
            display: none;
            width: 30px;
            height: 30px;
            border: 3px solid var(--gray-200);
            border-radius: 50%;
            border-top-color: var(--primary);
            animation: spin 1s linear infinite;
            margin: 0 auto;
        }

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

        /* Tutorial popup styles */
        .tutorial-popup {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: white;
            padding: 2rem;
            border-radius: 1rem;
            max-width: 90%;
            width: 500px;
            z-index: 1002;
            box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1),
                        0 8px 10px -6px rgb(0 0 0 / 0.1);
        }

        .tutorial-step {
            display: none;
            text-align: center;
        }

        .tutorial-step.active {
            display: block;
            animation: fadeIn 0.3s ease-out;
        }

        .tutorial-step img {
            max-width: 100%;
            height: auto;
            margin-bottom: 1rem;
            border-radius: 0.5rem;
        }

        .tutorial-navigation {
            display: flex;
            justify-content: space-between;
            margin-top: 1.5rem;
        }

        .disclaimer {
            background: var(--gray-50);
            border-radius: 0.75rem;
            padding: 1rem;
            margin-top: 1.5rem;
            font-size: 0.875rem;
            color: var(--gray-700);
            border: 1px solid var(--gray-200);
        }

        /* Popup para Token */
        #popupOverlayToken {
          display: none;
          position: fixed;
          top: 0;
          left: 0;
          right: 0;
          bottom: 0;
          background: rgba(0, 0, 0, 0.5);
          backdrop-filter: blur(4px);
          z-index: 1001; /* um nível acima do outro popup */
          animation: fadeIn 0.3s ease-out;
        }
    
        #popupToken {
          position: fixed;
          top: 50%;
          left: 50%;
          transform: translate(-50%, -50%);
          background: white;
          padding: 2rem;
          border-radius: 1rem;
          max-width: 90%;
          width: 400px;
          text-align: center;
          box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1),
                      0 8px 10px -6px rgb(0 0 0 / 0.1);
          animation: popIn 0.3s ease-out;
          max-height: 80vh;
          overflow-y: auto;
        }
    
        #popupToken h2 {
          color: var(--gray-800);
          font-size: 1.5rem;
          margin-bottom: 1rem;
        }
    
        #popupToken p {
          color: var(--gray-700);
          margin-bottom: 1rem;
          line-height: 1.5;
        }
    
        #tokenInput {
          width: 100%;
          padding: 0.75rem;
          margin-bottom: 1rem;
          border: 2px solid var(--gray-200);
          border-radius: 0.75rem;
          font-size: 1rem;
          font-family: 'Inter', sans-serif;
          transition: all 0.2s ease;
        }
    
        #tokenInput:focus {
          outline: none;
          border-color: var(--primary);
          box-shadow: 0 0 0 3px rgba(79,70,229,0.1);
        }
    
        /* Botão "X" para fechar popup do Token */
        .close-token-popup {
          position: fixed;
          top: 1px;
          width: 10px;
          height: 10px;
          right: 0px;
          font-size: 1.2rem;
          color: var(--gray-700);
          background: transparent;
          border: none;
          cursor: pointer;
        }
    
        .close-token-popup:hover {
          color: var(--primary-dark);
        }
    
        /* Animações */
        @keyframes fadeIn {
          from { opacity: 0; }
          to   { opacity: 1; }
        }
    
        @keyframes popIn {
          from {
            opacity: 0;
            transform: translate(-50%, -45%);
          }
          to {
            opacity: 1;
            transform: translate(-50%, -50%);
          }
        }
    
        @keyframes slideIn {
          from {
            opacity: 0;
            transform: translateY(20px);
          }
          to {
            opacity: 1;
            transform: translateY(0);
          }
        }
    
        @media (max-width: 640px) {
          body {
            padding: 1rem;
          }
    
          .header h1 {
            font-size: 1.75rem;
          }
    
          .card {
            padding: 1rem;
          }
        }