body {
      margin: 0;
      height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      background: url('hasemi.org-logo.png') no-repeat center center/cover;
      font-family: 'Segoe UI', sans-serif;
    }

    .main {
      display: flex;
      gap: 20px; /* ডেস্কটপে gap */
    }

    .container {
      position: relative;
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(2px);
      border-radius: 15px;
      padding: 30px;
      color: blue;
      box-shadow: 0 8px 25px rgba(0,0,0,0.3);
      text-align: center;
    }

    .btn {
      width: 170px;
      height: 60px;
      font-size: 18px;
      background: #fff;
      border: none;
      border-radius: 50px;
      color: #000;
      outline: none;
      cursor: pointer;
      transition: all 0.4s;
    }

    .btn:hover {
      box-shadow: inset 0 0 0 4px #ef476f, 
                  inset 0 0 0 8px #ffd166, 
                  inset 0 0 0 12px #06d6a0,
                  inset 0 0 0 16px #118ab2;
      background: #073b4c;
      color: #fff;
    }

    /* ভাসমান টেক্সট */
    .floating-text {
      position: absolute;
      top: -40px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(255, 210, 48, 0.6);
      color: #09090B;
      padding: 8px 15px;
      border-radius: 8px;
      font-size: 14px;
      opacity: 0;
      transition: opacity 1s ease;
    }

    .show {
      opacity: 1;
    }

    /* মোবাইলের জন্য */
    @media (max-width: 768px) {
      .main {
        flex-direction: column;
        align-items: center;
        gap: 320px; /* মোবাইলে gap বাড়ানো হলো */
      }
      .container {
        margin-bottom: 20px; /* অতিরিক্ত ফাঁকা */
      }
    }
    
    
    
    
    
    
#whatsapp-button {
   position: fixed;
   width: 60px;
   height: 60px;
   bottom: 20px;
   left: 20px;
   background-color: #25D366;
   border-radius: 50%;
   box-shadow: 0 0 15px rgba(37, 211, 102, 0.8); /* সবুজ গ্লো */
   z-index: 1000;
   display: flex;
   align-items: center;
   justify-content: center;
   animation: bouncePulseGlow 2s infinite; /* কম্বিনেশন অ্যানিমেশন */
   transition: transform 0.3s;
}

#whatsapp-button img {
   width: 35px;
   height: 35px;
}
#whatsapp-button:hover {
   transform: scale(1.2); /* হোভার করলে আরও বড় হবে */
   box-shadow: 0 0 25px rgba(37, 211, 102, 1); /* হোভার করলে বেশি গ্লো */
}

/* Bounce + Pulse + Glow Animation */
@keyframes bouncePulseGlow {
   0%, 20%, 50%, 80%, 100% {
      transform: translateY(0) scale(1);
      box-shadow: 0 0 15px rgba(37, 211, 102, 0.8);
   }
   40% {
      transform: translateY(-10px) scale(1.1);
      box-shadow: 0 0 25px rgba(37, 211, 102, 1);
   }
   60% {
      transform: translateY(-5px) scale(0.95);
      box-shadow: 0 0 20px rgba(37, 211, 102, 0.9);
   }
}