body {
      margin: 0;
      padding: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 100vh;
      background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
      font-family: 'Inter', sans-serif;
      color: white;
      overflow: hidden;
    }

    .welcome-container {
      text-align: center;
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(10px);
      padding: 2.5rem;
      border-radius: 1rem;
      border: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: 0 10px 30px rgba(0,0,0,0.1);
      animation: fadeInUp 0.5s ease;
      max-width: 90%;
      width: 350px;
    }

    .logo-icon {
      font-size: 3.5rem;
      margin-bottom: 1rem;
      color: #fff;
    }

    .title {
      font-size: 1.5rem;
      font-weight: 700;
      margin: 0;
      letter-spacing: -0.5px;
    }

    .subtitle {
      font-size: 0.95rem;
      opacity: 0.9;
      margin-top: 0.5rem;
      margin-bottom: 2rem;
    }

    .btn {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 100%;
      padding: 0.8rem;
      margin-bottom: 1rem;
      border: none;
      border-radius: 0.5rem;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      font-family: 'Inter', sans-serif;
      text-decoration: none;
      box-sizing: border-box;
    }

    .btn-download {
      background: white;
      color: #7c3aed; 
    }

    .btn-download:hover {
      background: #f1f5f9;
      transform: translateY(-2px);
    }

    .btn-login {
      background: transparent;
      color: white;
      border: 2px solid white;
    }

    .btn-login:hover {
      background: rgba(255, 255, 255, 0.1);
      transform: translateY(-2px);
    }

    .btn i {
      margin-right: 8px;
    }


    :root { color-scheme: light dark; }
    html, body { min-height: 100%; }
    body {
      padding: 1rem;
      box-sizing: border-box;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }
    .welcome-container {
      width: min(100%, 380px);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }
    .btn {
      min-height: 48px;
    }
    @media (max-width: 480px) {
      body {
        align-items: center;
        padding: 1rem;
      }
      .welcome-container {
        padding: 1.5rem;
      }
      .title { font-size: 1.35rem; }
      .subtitle { margin-bottom: 1.5rem; }
    }
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }