:root {
      --color-blue: rgba(79, 156, 249, 1);
      --color-pink: rgba(239, 89, 182, 1);
      --color-purple: rgba(168, 163, 235, 1);
      --color-light-blue: #c6ebf3;
      --color-white: rgba(255, 255, 255, 1);
      --color-black: rgba(0, 0, 0, 1);
      --color-gray: rgba(108, 117, 125, 1);
      --color-light-gray: rgba(248, 249, 250, 1);
      --color-error: rgba(220, 53, 69, 1);
      --color-success: rgba(40, 167, 69, 1);
    
      --shadow-light: 0 0.2vw 1vw rgba(0, 0, 0, 0.1);
      --shadow-medium: 0 0.5vw 2vw rgba(0, 0, 0, 0.15);
      --shadow-heavy: 0 1vw 3vw rgba(0, 0, 0, 0.2);
    
      --transition-fast: 0.2s ease;
      --transition-medium: 0.3s ease;
      --transition-slow: 0.5s ease;
  }
    
  * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
  }
    
  body {
      font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
      line-height: 1.6;
      color: var(--color-black);
      background-color: var(--color-white);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
  }
    
  /* Overlay */
  .overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.6);
      backdrop-filter: blur(0.3vw);
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 1000;
      opacity: 0;
      visibility: hidden;
      transition: all var(--transition-medium);
  }
    
  .overlay.active {
      opacity: 1;
      visibility: visible;
  }
    
  /* Popup */
  .popup-wrapper {
      background: var(--color-white);
      border-radius: 1.5vw;
      padding: 3vw;
      width: 90%;
      max-width: 35vw;
      max-height: 90vh;
      overflow-y: auto;
      box-shadow: var(--shadow-heavy);
      transform: translateY(2vw) scale(0.95);
      transition: all var(--transition-medium);
      position: relative;
  }
    
  .overlay.active .popup-wrapper {
      transform: translateY(0) scale(1);
  }
    
  /* Header */
  .popup-header {
      text-align: center;
      margin-bottom: 2.5vw;
      position: relative;
  }
    
  .close-btn {
      position: absolute;
      top: -1vw;
      right: -1vw;
      background: var(--color-light-gray);
      border: none;
      border-radius: 50%;
      width: 3vw;
      height: 3vw;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--color-gray);
      transition: all var(--transition-fast);
      z-index: 10;
  }
    
  .close-btn:hover {
      background: var(--color-error);
      color: var(--color-white);
      transform: scale(1.1);
  }
    
  .popup-title {
      font-size: 2.2vw;
      font-weight: 700;
      color: var(--color-blue);
      margin-bottom: 0.5vw;
      animation: slideInDown 0.6s ease;
  }
    
  .popup-subtitle {
      font-size: 1.1vw;
      color: var(--color-gray);
      font-weight: 500;
      animation: slideInDown 0.6s ease 0.1s both;
  }
    
  /* Form */
  .contact-form {
      display: flex;
      flex-direction: column;
      gap: 1.8vw;
  }
    
  .form-group {
      display: flex;
      flex-direction: column;
      gap: 0.5vw;
      animation: slideInUp 0.6s ease both;
  }
    
  .form-group:nth-child(1) {
      animation-delay: 0.2s;
  }
  .form-group:nth-child(2) {
      animation-delay: 0.3s;
  }
  .form-group:nth-child(3) {
      animation-delay: 0.4s;
  }
  .form-group:nth-child(4) {
      animation-delay: 0.5s;
  }
    
  .form-label {
      font-size: 1vw;
      font-weight: 600;
      color: var(--color-black);
      margin-bottom: 0.3vw;
  }
    
  .form-input {
      width: 100%;
      padding: 1.2vw 1.5vw;
      border: 0.15vw solid var(--color-light-blue);
      border-radius: 0.8vw;
      font-size: 1.1vw;
      font-family: inherit;
      background: var(--color-white);
      color: var(--color-black);
      transition: all var(--transition-fast);
      position: relative;
  }
    
  .form-input:focus {
      outline: none;
      border-color: var(--color-blue);
      box-shadow: 0 0 0 0.2vw rgba(79, 156, 249, 0.1);
      transform: translateY(-0.1vw);
  }
    
  .form-input:hover:not(:focus) {
      border-color: var(--color-purple);
  }
    
  .form-input.error {
      border-color: var(--color-error);
      background: rgba(220, 53, 69, 0.05);
      animation: shake 0.5s ease;
  }
    
  .form-input.success {
      border-color: var(--color-success);
      background: rgba(40, 167, 69, 0.05);
  }
    
  /* Checkbox */
  .checkbox-group {
      margin-top: 0.5vw;
  }
    
  .checkbox-label {
      display: flex;
      align-items: flex-start;
      gap: 0.8vw;
      cursor: pointer;
      font-size: 0.9vw;
      line-height: 1.4;
  }
    
  .checkbox-input {
      display: none;
  }
    
  .checkbox-custom {
      width: 1.3vw;
      height: 1.3vw;
      border: 0.15vw solid var(--color-light-blue);
      border-radius: 0.3vw;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all var(--transition-fast);
      flex-shrink: 0;
      margin-top: 0.1vw;
  }
    
  .checkbox-input:checked + .checkbox-custom {
      background: var(--color-blue);
      border-color: var(--color-blue);
      transform: scale(1.1);
  }
    
  .checkbox-input:checked + .checkbox-custom::after {
      content: "";
      width: 0.4vw;
      height: 0.7vw;
      border: 0.15vw solid var(--color-white);
      border-top: none;
      border-left: none;
      transform: rotate(45deg);
      margin-top: -0.1vw;
  }
    
  .checkbox-text {
      color: var(--color-gray);
      font-weight: 500;
  }
    
  .policy-link {
      color: var(--color-blue);
      text-decoration: underline;
      transition: color var(--transition-fast);
  }
    
  .policy-link:hover {
      color: var(--color-purple);
  }
    
  /* Submit Button */
  .submit-btn {
      background: linear-gradient(135deg, var(--color-blue), var(--color-purple));
      color: var(--color-white);
      border: none;
      border-radius: 0.8vw;
      padding: 1.3vw 2vw;
      font-size: 1.2vw;
      font-weight: 600;
      font-family: inherit;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: all var(--transition-medium);
      margin-top: 1vw;
      animation: slideInUp 0.6s ease 0.6s both;
  }
    
  .submit-btn:hover:not(:disabled) {
      transform: translateY(-0.2vw);
      box-shadow: var(--shadow-medium);
  }
    
  .submit-btn:active {
      transform: translateY(0);
  }
    
  .submit-btn:disabled {
      opacity: 0.7;
      cursor: not-allowed;
  }
    
  .btn-text {
      transition: opacity var(--transition-fast);
  }
    
  .btn-loader {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      opacity: 0;
      transition: opacity var(--transition-fast);
  }
    
  .submit-btn.loading .btn-text {
      opacity: 0;
  }
    
  .submit-btn.loading .btn-loader {
      opacity: 1;
  }
    
  .loader-spinner {
      width: 1.5vw;
      height: 1.5vw;
      border: 0.15vw solid rgba(255, 255, 255, 0.3);
      border-top: 0.15vw solid var(--color-white);
      border-radius: 50%;
      animation: spin 1s linear infinite;
  }
    
  /* Error Messages */
  .error-message {
      font-size: 0.8vw;
      color: var(--color-error);
      font-weight: 500;
      opacity: 0;
      transform: translateY(-0.5vw);
      transition: all var(--transition-fast);
      min-height: 1.2vw;
  }
    
  .error-message.show {
      opacity: 1;
      transform: translateY(0);
  }
    
  /* Success Message */
  .success-message {
      text-align: center;
      padding: 2vw;
      opacity: 0;
      transform: scale(0.8);
      transition: all var(--transition-medium);
      display: none;
  }
    
  .success-message.show {
      opacity: 1;
      transform: scale(1);
      display: block;
  }
    
  .success-icon {
      color: var(--color-success);
      margin-bottom: 1vw;
      animation: bounceIn 0.8s ease;
  }
    
  .success-title {
      font-size: 1.8vw;
      font-weight: 700;
      color: var(--color-success);
      margin-bottom: 0.5vw;
  }
    
  .success-text {
      font-size: 1.1vw;
      color: var(--color-gray);
      font-weight: 500;
      margin-bottom: 1.5vw;
  }
    
  .success-close-btn {
      background: var(--color-blue);
      color: var(--color-white);
      border: none;
      border-radius: 0.8vw;
      padding: 1vw 2vw;
      font-size: 1.1vw;
      font-weight: 600;
      font-family: inherit;
      cursor: pointer;
      transition: all var(--transition-fast);
      margin-top: 1vw;
  }
    
  .success-close-btn:hover {
      background: var(--color-purple);
      transform: translateY(-0.1vw);
  }
    
  /* Demo Button */
  .demo-container {
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      background: linear-gradient(135deg, var(--color-light-blue), var(--color-purple));
  }
    
  .open-form-btn {
      background: var(--color-blue);
      color: var(--color-white);
      border: none;
      border-radius: 0.8vw;
      padding: 1.5vw 3vw;
      font-size: 1.3vw;
      font-weight: 600;
      cursor: pointer;
      transition: all var(--transition-medium);
      box-shadow: var(--shadow-medium);
  }
    
  .open-form-btn:hover {
      transform: translateY(-0.3vw);
      box-shadow: var(--shadow-heavy);
  }
    
  /* Animations */
  @keyframes slideInDown {
      from {
          opacity: 0;
          transform: translateY(-2vw);
      }
      to {
          opacity: 1;
          transform: translateY(0);
      }
  }
    
  @keyframes slideInUp {
      from {
          opacity: 0;
          transform: translateY(2vw);
      }
      to {
          opacity: 1;
          transform: translateY(0);
      }
  }
    
  @keyframes shake {
      0%,
      100% {
          transform: translateX(0);
      }
      25% {
          transform: translateX(-0.3vw);
      }
      75% {
          transform: translateX(0.3vw);
      }
  }
    
  @keyframes spin {
      0% {
          transform: rotate(0deg);
      }
      100% {
          transform: rotate(360deg);
      }
  }
    
  @keyframes bounceIn {
      0% {
          opacity: 0;
          transform: scale(0.3);
      }
      50% {
          opacity: 1;
          transform: scale(1.1);
      }
      100% {
          opacity: 1;
          transform: scale(1);
      }
  }

  /* Исправления для кнопки закрытия и ошибок */
  .close-icon {
      width: 1.5vw;
      height: 1.5vw;
      min-width: 16px;
      min-height: 16px;
  }

  /* Mobile Responsiveness - Improved Version */
  @media (max-width: 1024px) {
      :root {
          --mobile-padding: 6vw;
          --mobile-margin: 4vw;
      }
      
      .popup-wrapper {
          width: 92%;
          max-width: 500px;
          padding: var(--mobile-padding);
          border-radius: 4vw;
          margin: 2vw;
          max-height: 95vh;
      }

      .popup-header {
          margin-bottom: 5vw;
      }

      .popup-title {
          font-size: 7vw !important;
          margin-bottom: 1.5vw;
          line-height: 1.2;
      }

      .popup-subtitle {
          font-size: 4vw !important;
          line-height: 1.4;
      }

      .close-btn {
          width: 10vw;
          height: 10vw;
          top: -3vw;
          right: -3vw;
          min-width: 44px;
          min-height: 44px;
      }

      .close-icon {
          width: 5vw;
          height: 5vw;
          min-width: 20px;
          min-height: 20px;
      }

      .contact-form {
          gap: 5vw;
      }

      .form-group {
          gap: 2vw;
      }

      .form-label {
          font-size: 4vw !important;
          margin-bottom: 1.5vw;
          font-weight: 600;
      }

      .form-input {
          padding: 4vw 5vw;
          font-size: 4.5vw !important;
          border-radius: 3vw;
          border-width: 0.3vw;
          min-height: 15vw;
      }

      .form-input:focus {
          box-shadow: 0 0 0 0.5vw rgba(79, 156, 249, 0.1);
      }

      .checkbox-group {
          margin-top: 3vw;
      }

      .checkbox-label {
          font-size: 3.8vw !important;
          gap: 3vw;
          align-items: center;
          line-height: 1.5;
      }

      .checkbox-custom {
          width: 6vw;
          height: 6vw;
          border-radius: 1.5vw;
          border-width: 0.3vw;
          margin-top: 0;
      }

      .checkbox-input:checked + .checkbox-custom::after {
          width: 2vw;
          height: 3.5vw;
          border-width: 0.4vw;
          margin-top: -0.5vw;
      }

      .submit-btn {
          padding: 5vw 6vw;
          font-size: 4.5vw !important;
          border-radius: 3vw;
          margin-top: 3vw;
          min-height: 15vw;
      }

      .loader-spinner {
          width: 6vw;
          height: 6vw;
          border-width: 0.3vw;
      }

      .error-message {
          font-size: 3.5vw !important;
          min-height: 5vw;
          margin-top: 1vw;
          line-height: 1.3;
      }

      /* Success Message */
      .success-message {
          padding: 5vw;
      }

      .success-icon {
          font-size: 12vw;
          margin-bottom: 3vw;
      }

      .success-title {
          font-size: 6vw !important;
          margin-bottom: 2vw;
      }

      .success-text {
          font-size: 4vw !important;
          margin-bottom: 4vw;
          line-height: 1.5;
      }

      .success-close-btn {
          padding: 4vw 6vw;
          font-size: 4.5vw !important;
          border-radius: 3vw;
          min-height: 15vw;
      }

      /* Demo Button */
      .open-form-btn {
          padding: 6vw 8vw;
          font-size: 5vw !important;
          border-radius: 3vw;
      }

      /* Улучшаем видимость ошибок */
      .form-input.error {
          border-color: var(--color-error);
          background: rgba(220, 53, 69, 0.1);
      }
      
      .form-input.error + .error-message {
          opacity: 1;
          transform: translateY(0);
      }
  }

  /* Улучшаем читаемость для очень маленьких экранов */
  @media (max-width: 480px) {
      .popup-wrapper {
          padding: 8vw;
          border-radius: 5vw;
          width: 95%;
          margin: 1vw;
      }

      .popup-title {
          font-size: 8vw !important;
      }

      .popup-subtitle {
          font-size: 4.5vw !important;
      }

      .close-btn {
          width: 12vw;
          height: 12vw;
          top: -4vw;
          right: -4vw;
      }
      
      .close-icon {
          width: 6vw;
          height: 6vw;
      }
      
      .form-input {
          padding: 5vw 6vw;
          font-size: 5vw !important;
      }

      .submit-btn {
          padding: 6vw 7vw;
          font-size: 5vw !important;
      }

      .checkbox-label {
          font-size: 4vw !important;
      }

      .error-message {
          font-size: 4vw !important;
          min-height: 6vw;
      }
      
      .success-icon svg {
          width: 16vw;
          height: 16vw;
      }
  }

  /* Особые стили для очень высоких устройств */
  @media (max-height: 600px) and (max-width: 768px) {
      .popup-wrapper {
          max-height: 98vh;
          overflow-y: auto;
      }
      
      .contact-form {
          gap: 3vw;
      }
      
      .form-input {
          padding: 3vw 4vw;
          min-height: 12vw;
      }
      
      .submit-btn {
          padding: 4vw 5vw;
          min-height: 12vw;
      }
  }

  /* Улучшаем читаемость на всех мобильных устройствах */
  @media (max-width: 1024px) {
      body {
          -webkit-text-size-adjust: 100%;
          -ms-text-size-adjust: 100%;
          text-size-adjust: 100%;
      }

      /* Увеличиваем область клика для инпутов */
      .form-input,
      .checkbox-label,
      .submit-btn {
          cursor: pointer;
          -webkit-tap-highlight-color: transparent;
      }

      /* Улучшаем фокус-стили для тач-устройств */
      .form-input:focus,
      .submit-btn:focus,
      .checkbox-input:focus + .checkbox-custom {
          outline: none;
          box-shadow: 0 0 0 0.4vw rgba(79, 156, 249, 0.3);
      }
  }

  /* Анимации для мобильных устройств */
  @media (max-width: 1024px) {
      .overlay .popup-wrapper {
          transform: translateY(5vw) scale(0.98);
      }

      .overlay.active .popup-wrapper {
          transform: translateY(0) scale(1);
      }

      @keyframes slideInDown {
          from {
              opacity: 0;
              transform: translateY(-5vw);
          }
          to {
              opacity: 1;
              transform: translateY(0);
          }
      }

      @keyframes slideInUp {
          from {
              opacity: 0;
              transform: translateY(5vw);
          }
          to {
              opacity: 1;
              transform: translateY(0);
          }
      }
  }

  /* Гарантируем минимальный размер для accessibility */
  @media (max-width: 1024px) {
      .close-btn {
          min-width: 44px;
          min-height: 44px;
      }
      
      .error-message {
          font-size: 14px !important;
      }
  }