body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to bottom right, #f4f7fa, #e3ecf3);
}

.hero {
  background: linear-gradient(135deg, #c1d5f2, #f2f6fc);
  animation: fadeIn 1.2s ease-in-out;
}

@keyframes fadeIn {
  0% { opacity: 0; transform: translateY(-20px); }
  100% { opacity: 1; transform: translateY(0); }
}

.btn-primary {
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.btn-primary:hover {
  transform: scale(1.05);
  background-color: #0056b3;
}

#topBtn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 10px 14px;
  display: none;
  border: none;
  border-radius: 5px;
  background: #007bff;
  color: #fff;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  z-index: 999;
}


p.lead {
  font-size: 1.2rem;
}

section {
  padding-top: 40px;
  padding-bottom: 40px;
}
a {
  color: #2980b9;
  text-decoration: none;
}
.card-img-top {
  height: 200px;
  object-fit: cover;
}
footer {
  background-color: #2c3e50;
  color: white;
  padding: 20px 0;
  text-align: center;
}
.card-img-top {
  height: 200px;
  object-fit: cover;
}

.card-title {
  font-weight: bold;
}
.card-text {
  color: #7f8c8d;
}
<!--about-->
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to bottom right, #f4f7fa, #e3ecf3);
}

.navbar {
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

section {
  padding: 60px 0;
}

h1, h2 {
  font-weight: 700;
}

.lead {
  font-size: 1.2rem;
  color: #333;
}

.fade-in {
  animation: fadeIn 1s ease-in-out both;
}

@keyframes fadeIn {
  0% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

footer {
  background-color: #343a40;
  color: white;
  text-align: center;
  padding: 20px 0;
}
/* ===========================
   GLOBAL STYLES
=========================== */
body {
  font-family: 'Poppins', sans-serif;
  background-color: #f8f9fa;
  color: #212529;
  line-height: 1.6;
  scroll-behavior: smooth;
}

/* ===========================
   NAVBAR
=========================== */
.navbar {
  background: rgba(0, 0, 0, 0.9);
  transition: all 0.4s ease;
  padding: 12px 0;
}

.navbar.scrolled {
  background-color: #111 !important;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
  display: flex;
  align-items: center;
  font-weight: 700;
  color: #fff !important;
}

.navbar-brand img {
  height: 45px;
  margin-right: 10px;
  transition: transform 0.3s ease;
}

.navbar-brand img:hover {
  transform: scale(1.1);
}

.nav-link {
  font-weight: 500;
  color: #ccc !important;
  transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: #00bf72 !important;
}

/* ===========================
   HERO SECTION
=========================== */
.hero {
  background: linear-gradient(135deg, #004d7a, #008793, #00bf72, #a8eb12);
  background-size: 400% 400%;
  animation: gradientShift 12s ease infinite;
  color: #fff;
  text-align: center;
  padding: 120px 20px;
  border-bottom-left-radius: 60px;
  border-bottom-right-radius: 60px;
  position: relative;
}

.hero h1 {
  font-weight: 700;
  font-size: 2.8rem;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  animation: fadeInDown 1.2s ease;
}

.hero p {
  font-size: 1.1rem;
  margin-top: 10px;
  color: #f1f1f1;
  animation: fadeInUp 1.5s ease;
}

.hero .btn {
  margin-top: 25px;
  font-size: 1.1rem;
  padding: 12px 25px;
  border-radius: 30px;
  background-color: #fff;
  color: #007bff;
  font-weight: 600;
  transition: all 0.3s ease;
}

.hero .btn:hover {
  background-color: #007bff;
  color: #fff;
  transform: translateY(-3px);
}

/* HERO ANIMATIONS */
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===========================
   ABOUT SECTION
=========================== */
.about-preview {
  background: #fff;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  margin: 60px auto;
  max-width: 950px;
  padding: 60px 30px;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.about-preview:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.about-preview h2 {
  font-weight: 700;
  color: #007bff;
}

.about-preview p {
  font-size: 1.1rem;
  color: #555;
}

/* ===========================
   WORKSHOPS SECTION
=========================== */
.workshop-card {
  border-radius: 15px;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  background: #fff;
  overflow: hidden;
}

.workshop-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.workshop-card img {
  border-top-left-radius: 15px;
  border-top-right-radius: 15px;
}

.workshop-card .card-body {
  padding: 20px;
}

.workshop-card h5 {
  color: #007bff;
  font-weight: 600;
}

/* ===========================
   VIRTUAL LAB SECTION
=========================== */
.virtual-lab {
  background: linear-gradient(120deg, #e0f7fa, #f1f8e9);
  padding: 80px 20px;
  border-radius: 20px;
}

.virtual-lab h2 {
  color: #004d7a;
  font-weight: 700;
  margin-bottom: 20px;
}

.virtual-lab .btn {
  border-radius: 25px;
  padding: 10px 25px;
  font-weight: 600;
}

/* ===========================
   CONTACT SECTION
=========================== */
.contact-form {
  background: #fff;
  padding: 40px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-form input,
.contact-form textarea {
  border-radius: 10px;
  border: 1px solid #ddd;
  padding: 12px;
  width: 100%;
  margin-bottom: 15px;
  transition: border-color 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #007bff;
  outline: none;
}

/* ===========================
   BLOG SECTION
=========================== */
.blog-card {
  background: #fff;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: all 0.3s ease;
}

.blog-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

.blog-card img {
  border-top-left-radius: 15px;
  border-top-right-radius: 15px;
}

/* ===========================
   FOOTER
=========================== */
footer {
  background-color: #111;
  color: #ccc;
  padding: 20px;
}

footer strong {
  color: #00bf72;
}

/* ===========================
   SCROLL TO TOP BUTTON
=========================== */
#topBtn {
  display: none;
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1000;
  border: none;
  outline: none;
  background-color: #007bff;
  color: white;
  cursor: pointer;
  padding: 10px 15px;
  border-radius: 50%;
  font-size: 18px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

#topBtn:hover {
  background-color: #0056b3;
  transform: translateY(-3px);
}

/* ===========================
   ANIMATED HERO BACKGROUND
=========================== */
.hero {
  position: relative;
  overflow: hidden;
}

/* Floating chemistry icons container */
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Add molecule & lab icon layer */
.hero::before {
  content: "⚗️ ⚛️ 🧪 🧬 ⚗️ ⚛️ 🧪 🧬";
  position: absolute;
  white-space: nowrap;
  font-size: 2rem;
  opacity: 0.15;
  top: 30%;
  left: -100%;
  animation: floatSymbols 60s linear infinite;
}

.hero::after {
  content: "🧬 ⚛️ 🧪 ⚗️ 🧬 ⚛️ 🧪 ⚗️";
  position: absolute;
  white-space: nowrap;
  font-size: 1.8rem;
  opacity: 0.1;
  top: 70%;
  left: -100%;
  animation: floatSymbolsReverse 80s linear infinite;
}

/* Floating animations */
@keyframes floatSymbols {
  0% { transform: translateX(0); }
  100% { transform: translateX(200%); }
}

@keyframes floatSymbolsReverse {
  0% { transform: translateX(0); }
  100% { transform: translateX(200%); }
}

/* Slight floating motion on heading and button */
.hero h1, .hero p, .hero .btn {
  position: relative;
  z-index: 2;
}

.hero h1 {
  animation: floatSoft 6s ease-in-out infinite alternate;
}

.hero p {
  animation: floatSoft 6s ease-in-out infinite alternate-reverse;
}

@keyframes floatSoft {
  0% { transform: translateY(0); }
  100% { transform: translateY(-8px); }
}


/* Contact Form Card */
.card {
  border-radius: 12px;
  background-color: #ffffff;
}

#contactForm input,
#contactForm textarea {
  border-radius: 8px;
}

#contactForm button {
  background: linear-gradient(90deg, #1d8cf8, #3358f4);
  border: none;
  font-weight: bold;
  transition: 0.3s;
}

#contactForm button:hover {
  background: linear-gradient(90deg, #3358f4, #1d8cf8);
}

/* Info Box */
.bg-light {
  border-radius: 12px;
}