body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #0f2027;
    overflow-y: auto;

}



.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('bgg.jpg') no-repeat center center/cover;
    filter: blur(10px) brightness(0.7);
    z-index: -1;

}

.container {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    padding: 60px 40px;
    border-radius: 25px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    border: 1px solid #00ffff77;
    max-width: 800px;
    margin: 30px;
    animation: fadeInUp 1s ease-in-out;
}


@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(50px); }
    100% { opacity: 1; transform: translateY(0); }
}

header h1 {
    font-size: 3.5em;
    font-weight: bold;
    background: linear-gradient(45deg, #00ff88, #007a4d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 2px 2px 10px rgba(0, 255, 128, 0.6);
    animation: glowGreen 2s ease-in-out infinite alternate;
    letter-spacing: 2px;
    text-transform: uppercase;
    user-select: none; /* Mouse diye text select করা যাবে না */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

@keyframes glowGreen {
    0% {
        text-shadow: 0 0 10px #00ff88, 0 0 20px #00ff88;
    }
    100% {
        text-shadow: 0 0 20px #00ff88, 0 0 30px #00ff88;
    }
}


    
header p {
    font-size: 1.4em;
    color: #00ffcc;
    margin: 20px 0 30px;
    user-select: none; /* Mouse diye text select করা যাবে না */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

 .social-links {
    margin: 40px 0;
    user-select: none; /* Mouse diye text select করা যাবে না */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.social-links a {
    color: #1eaf7f;
    font-size: 2.5em;
    margin: 0 15px;
    text-decoration: none;
    transition: all 0.4s ease-in-out;
}

.social-links a:hover {
    color: #00ffff;
    transform: scale(1.2) rotate(5deg);
    text-shadow: 0 0 15px #00ffff;
}
/* Tooltip styling */


.contact-info {
    margin: 30px 0;
}

.contact-link {
    display: inline-block;
    color: #bbff00;
    font-size: 1.3em;
    margin: 10px 25px;
    text-decoration: none;
    transition: color 0.3s ease-in-out;
    user-select: none; /* Mouse diye text select করা যাবে না */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.contact-link i {
    margin-right: 8px;
}

.contact-link:hover {
    color: #00ff88;
    transform: scale(1.1);
}

.cta-button {
    background: linear-gradient(135deg, #2c1fe9, #7873f5);
    color: white;
    border: none;
    padding: 16px 50px;
    font-size: 1.4em;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.4s ease-in-out;
    animation: pulse 2.5s infinite;
    user-select: none; /* Mouse diye text select করা যাবে না */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.cta-button:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.5);
}

@keyframes pulse {
    0% { transform: scale(1); background-color: #ff6ec4; }
    50% { transform: scale(1.05); background-color: #00ffd5; }
    100% { transform: scale(1); background-color: #ff6ec4; }
}

.bio-text {
    margin-top: 30px;
    padding: 25px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    user-select: none; /* Mouse diye text select করা যাবে না */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.bio-text p {
    font-size: 1.15em;
    color: #06ca51;
    margin: 12px 0;
    letter-spacing: 1px;
    text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease-in-out, color 0.3s ease-in-out;
}

.bio-text p:hover {
    transform: translateX(15px);
    color: #ffeb3b;
}

.bio-text p.edu {
    font-style: italic;
    color: #00ffcc;
    font-size: 1em;
    border-top: 0px solid #00ffff77;
    padding-top: 10px;
    margin-top: 25px;
}

.bio-text p.edu:hover {
    color: #ffd700;
    transform: translateX(15px);

}

/* RESPONSIVE SECTION */

@media (max-width: 1024px) {
    .container {
        padding: 45px;
    }

    header h1 {
        font-size: 3.2em;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 35px 25px;
        max-width: 90%;
    }

    header h1 {
        font-size: 2.4em;
    }

    header p {
        font-size: 1.1em;
    }

    .social-links a {
        font-size: 1.8em;
        margin: 0 10px;
    }

    .contact-link {
        font-size: 1em;
        margin: 8px 10px;
    }

    .cta-button {
        font-size: 1.2em;
        padding: 12px 30px;
    }

    .bio-text p {
        font-size: 1em;
    }

    .bio-text p.edu {
        font-size: 0.95em;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8em;
    }

    header p {
        font-size: 1em;
    }

    .cta-button {
        font-size: 1em;
        padding: 10px 25px;
    }

    .social-links {
        margin: 20px 0;
    }

    .bio-text {
        padding: 20px;
    }

    .bio-text p {
        font-size: 0.95em;
    }

    .social-links a {
        font-size: 1.6em;
        margin: 0 8px;
    }

    .contact-link {
        font-size: 0.95em;
    }
}



.profile-picture {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 30px;
  animation: slideDown 1s ease forwards;
  opacity: 0;
  user-select: none; /* Mouse diye text select করা যাবে না */
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.profile-picture img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 4px solid #00ffcc;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
}

.profile-picture img:hover {
  transform: scale(1.05);
}

/* Animation */
@keyframes slideDown {
  0% {
    transform: translateY(-50px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}



  .container {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(25px) saturate(180%);
  }
  header h1 {
    font-family: 'Orbitron', sans-serif;
}
/* Toast Notification */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #00ffcc, #005555);
    color: #fff;
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: bold;
    box-shadow:
      0 8px 20px rgba(0, 255, 204, 0.4),
      0 0 15px rgba(0, 255, 255, 0.6),
      inset 0 0 5px rgba(255, 255, 255, 0.2);
    transform: scale(0.5) rotateX(90deg) rotateY(90deg);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.25, 1.3, 0.5, 1);
    z-index: 9999;
    pointer-events: none;
    font-family: 'Segoe UI', sans-serif;
  }
  .toast.show {
    opacity: 1;
    transform: scale(1) rotateX(0) rotateY(0);
  }
  .toast.hide {
    opacity: 0;
    transform: scale(0.5) rotateX(90deg) rotateY(90deg);
    transition: all 0.5s ease-in;
  }
  
    
  @keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
  }
  
  .toast.shake {
    animation: shake 0.5s ease;
  }