:root {
      --primary: #007BFF;
      --primary-gradient: linear-gradient(135deg, #007BFF, #0056b3);
      --secondary: #FFC107;
      --dark: #1A1A1A;
      --light: #FFF5F5;
      --success: #28A745;
      --white: #FFFFFF;
      --glass: rgba(0, 123, 255, 0.1);
      --glass-border: rgba(0, 123, 255, 0.2);
      --text-color: var(--white);
      --bg-color: var(--dark);
      --gradient-color-1: rgba(0, 123, 255, 0.1);
      --gradient-color-2: rgba(255, 193, 7, 0.1);
      --toggle-bg-dark: var(--white);
      --toggle-icon-dark: #1A1A1A;
      --toggle-shadow-dark: rgba(0, 123, 255, 0.2);
      --toggle-bg-light: #1A1A1A;
      --toggle-icon-light: var(--white);
      --toggle-shadow-light: rgba(255, 193, 7, 0.2);
    }
    body.light-mode {
      --primary: #007BFF;
      --primary-gradient: linear-gradient(135deg, #007BFF, #0056b3);
      --secondary: #FFC107;
      --dark: #FFF5F5;
      --light: #1A1A1A;
      --white: #1A1A1A;
      --glass: rgba(0, 123, 255, 0.05);
      --glass-border: rgba(0, 123, 255, 0.15);
      --text-color: #1A1A1A;
      --bg-color: #FFF5F5;
      --gradient-color-1: rgba(0, 123, 255, 0.05);
      --gradient-color-2: rgba(255, 193, 7, 0.05);
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Arial', sans-serif;
    }
    body {
      background: var(--bg-color);
      color: var(--text-color);
      min-height: 100vh;
      background-image:
        radial-gradient(circle at 15% 50%, var(--gradient-color-1) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, var(--gradient-color-2) 0%, transparent 50%);
      transition: background 0.3s ease, color 0.3s ease;
    }
    .page {
      min-height: 100vh;
      display: none;
      padding: 20px;
      animation: fadeIn 0.5s ease-out;
    }
    .page.active {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
    @keyframes fadeIn {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    .container {
      width: 100%;
      max-width: 500px;
      margin: auto;
    }
    .glass-card {
      background: var(--glass);
      backdrop-filter: blur(20px);
      border: 1px solid var(--glass-border);
      border-radius: 24px;
      padding: 30px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
      position: relative;
      overflow: hidden;
      transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    }
    .glass-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--primary-gradient);
    }
    .header {
      text-align: center;
      margin-bottom: 40px;
    }
    .logo-container {
      background: var(--glass);
      width: 120px;
      height: 120px;
      border-radius: 30px;
      margin: 0 auto 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      transform: rotate(-5deg);
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
      transition: background 0.3s ease, box-shadow 0.3s ease;
    }
    .logo {
      width: 80px;
      height: auto;
    }
    .title {
      font-size: 2.5rem;
      font-weight: 800;
      margin-bottom: 10px;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .subtitle {
      color: var(--light);
      font-size: 1.1rem;
      opacity: 0.8;
      transition: color 0.3s ease;
    }
    .steps {
      display: flex;
      justify-content: space-between;
      margin-bottom: 30px;
      direction: ltr;
      padding: 0px 10px;
    }
    .step {
      width: 35px;
      height: 35px;
      border-radius: 50%;
      background: var(--glass);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      margin: 0 5px;
      position: relative;
      border: 2px solid var(--glass-border);
      transition: background 0.3s ease, border-color 0.3s ease;
    }
    .step.active {
      background: var(--primary-gradient);
      border: none;
    }
    .step.completed {
      background: var(--success);
      border: none;
    }
    .step::after {
      content: '';
      position: absolute;
      right: -15px;
      width: 20px;
      height: 2px;
      background: var(--glass-border);
      transition: background 0.3s ease;
    }
    .step:last-child::after {
      display: none;
    }
    .input-group {
      margin-bottom: 25px;
    }
    .label {
      display: block;
      font-weight: 600;
      margin-bottom: 10px;
      font-size: 1.1rem;
      text-align: left;
      direction: ltr;
    }
    .input {
      width: 100%;
      padding: 16px 20px;
      background: var(--glass);
      border: 2px solid var(--glass-border);
      border-radius: 16px;
      color: var(--text-color);
      font-size: 1rem;
      transition: all 0.3s ease;
      text-align: left;
      direction: ltr;
    }
    .input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.1);
    }
    .input::placeholder {
      color: rgba(255, 255, 255, 0.5);
    }
    body.light-mode .input::placeholder {
      color: rgba(0, 0, 0, 0.5);
    }
    .platforms {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 15px;
      margin-bottom: 25px;
    }
    .platform-option {
      background: var(--glass);
      border: 2px solid var(--glass-border);
      border-radius: 16px;
      padding: 20px;
      text-align: center;
      cursor: pointer;
      transition: all 0.3s ease;
      color: var(--text-color);
    }
    .platform-option:hover {
      transform: translateY(-5px);
    }
    .platform-option.selected {
      border-color: var(--primary);
      background: rgba(0, 123, 255, 0.1);
    }
    .platform-icon {
      width: 40px;
      height: 40px;
      margin-bottom: 10px;
    }
    .coins-options {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
      margin-bottom: 25px;
    }
    .coins-option {
      background: var(--glass);
      border: 2px solid var(--glass-border);
      border-radius: 16px;
      padding: 15px;
      text-align: center;
      cursor: pointer;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
      color: var(--text-color);
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100px;
    }
    .coins-icon {
      width: 80px;
      height: 80px;
      margin: 0;
    }
    .coins-option:hover {
      transform: translateY(-5px);
    }
    .coins-option.selected {
      border-color: var(--primary);
      background: rgba(0, 123, 255, 0.1);
    }
    .btn {
      width: 100%;
      padding: 18px;
      border: none;
      border-radius: 16px;
      font-size: 1.2rem;
      font-weight: 700;
      cursor: pointer;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
      background: var(--primary-gradient);
      color: var(--white);
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 20px rgba(0, 123, 255, 0.3);
    }
    .btn::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.1), transparent);
      transform: translateX(-100%);
    }
    .btn:hover::before {
      transform: translateX(100%);
      transition: transform 0.8s ease;
    }
    .progress-container {
      width: 100%;
      height: 12px;
      background: var(--glass);
      border-radius: 100px;
      overflow: hidden;
      margin: 30px 0;
      transition: background 0.3s ease;
    }
    .progress-bar {
      height: 100%;
      background: var(--primary-gradient);
      width: 0%;
      transition: width 0.5s ease;
      position: relative;
      overflow: hidden;
    }
    .progress-bar::after {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
      );
      animation: progressShine 1.5s linear infinite;
    }
    @keyframes progressShine {
      0% { transform: translateX(-100%); }
      100% { transform: translateX(100%); }
    }
    .status-text {
      text-align: center;
      font-size: 1.2rem;
      margin: 20px 0;
      color: var(--light);
      transition: color 0.3s ease;
    }
    .counter {
      font-size: 5rem;
      font-weight: 800;
      text-align: center;
      margin: 30px 0;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-family: 'Arial', sans-serif;
    }
    .verify-icon {
      width: 100px;
      height: 100px;
      margin: 0 auto 20px;
      display: block;
    }
    .theme-toggle-button {
      position: fixed;
      top: 20px;
      right: 20px;
      border-radius: 50%;
      width: 50px;
      height: 50px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      z-index: 1000;
      transition: background-color 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    }
    body:not(.light-mode) .theme-toggle-button {
      background-color: var(--toggle-bg-dark);
      border: 1px solid var(--white);
      box-shadow: 0 5px 15px var(--toggle-shadow-dark);
    }
    body.light-mode .theme-toggle-button {
      background-color: var(--toggle-bg-light);
      border: 1px solid var(--dark);
      box-shadow: 0 5px 15px var(--toggle-shadow-light);
    }
    .theme-toggle-button img {
      width: 24px;
      height: 24px;
      transition: filter 0.3s ease;
    }
    @media (max-width: 480px) {
      .container { padding: 10px; }
      .title { font-size: 2rem; }
      .coins-options { grid-template-columns: repeat(2,1fr);
         gap: 8px; }
      .coins-option { padding: 12px; }
      .coins-icon { width: 70px; height: 70px; }
      .counter { font-size: 4rem; }
      .theme-toggle-button { top: 10px; right: 10px; width: 40px; height: 40px; }
      .theme-toggle-button img { width: 20px; height: 20px; }
    }
    
    .profile-section {
      margin-bottom: 25px;
      text-align: center;
    }
    .profile-card {
      background: var(--glass);
      border: 2px dashed var(--glass-border);
      border-radius: 16px;
      padding: 20px;
      display: inline-block;
      width: 90%;
      display: flex;
      margin: auto;
      justify-content: center;
      align-items: center;
      flex-direction: column;

      
    }
    .profile-avatar {
      width: 100px;
      height: 100px;
      border-radius: 50%;
      margin-bottom: 15px;
      border: 3px solid var(--primary);
      object-fit: cover;
      box-shadow: 0px 0px 17px var(--primary);
    }
    .profile-name {
      font-size: 1.3rem;
      font-weight: 600;
      color: var(--text-color);
      margin: 0;
    }
    .verification-question {
      font-size: 1.2rem;
      font-weight: 600;
      margin: 20px 0;
      color: var(--text-color);
    }
    .verification-buttons {
      display: flex;
      gap: 15px;
      justify-content: center;
      margin-top: 20px;
    }
    .verification-buttons .btn {
      width: auto;
      min-width: 100px;
      padding: 12px 24px;
      font-size: 1rem;
      font-weight: 600;
    }
    .btn-success { background: var(--success); }
    .btn-secondary {
      background: var(--glass);
      color: var(--text-color);
      border: 2px solid var(--glass-border);
    }
    .loading-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.8);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      z-index: 1000;
      color: white;
    }
    .loading-spinner {
      width: 50px;
      height: 50px;
      border: 4px solid rgba(255, 255, 255, 0.3);
      border-top: 4px solid var(--primary);
      border-radius: 50%;
      animation: spin 1s linear infinite;
      margin-bottom: 20px;
    }
    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
    .error-modal {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.8);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 1001;
    }
    .error-content {
      background: var(--glass);
      backdrop-filter: blur(20px);
      border: 1px solid var(--glass-border);
      border-radius: 16px;
      padding: 30px;
      max-width: 400px;
      text-align: center;
      color: var(--text-color);
    }
    .error-content h3 {
      margin-bottom: 15px;
      color: #ff4444;
    }
    .error-content p {
      margin-bottom: 20px;
    }
    .error-buttons {
      display: flex;
      gap: 10px;
      justify-content: center;
    }
    .error-btn {
      padding: 12px 20px;
      border: none;
      border-radius: 12px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }
    .error-btn.primary {
      background: var(--primary-gradient);
      color: var(--white);
    }
    .error-btn.secondary {
      background: var(--glass);
      color: var(--text-color);
      border: 1px solid var(--glass-border);
    }
    .hidden { display: none !important; }