/* Reset and Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', 'Segoe UI', sans-serif;
}

/* Custom Properties */
:root {
  --primary: #00ffcc;
  --primary-dark: #00ddb3;
  --secondary: #2c3e50;
  --accent: #e74c3c;
  --text-light: #ffffff;
  --text-dark: #333333;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* General page styling */
body {
  margin: 0;
  padding: 0;
  background-image: url('https://res.cloudinary.com/dp71rx6nx/image/upload/v1750778657/background_v9nwtm.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 100vh;
  color: var(--text-light);
  position: relative;
  overflow-x: hidden;
  padding-top: 4rem;
}

/* Animated gradient overlay */
.overlay {
  background: linear-gradient(45deg, rgba(0,0,0,0.7), rgba(0,0,0,0.4));
  min-height: 100vh;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px;
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
}

.overlay::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.7) 100%);
  animation: pulse 4s infinite;
}

@keyframes pulse {
  0% { opacity: 0.5; }
  50% { opacity: 0.8; }
  100% { opacity: 0.5; }
}

/* Content block styling */
.content {
  max-width: 900px;
  margin: auto;
  background: rgba(0, 0, 0, 0.7);
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: 0 0 30px rgba(0, 255, 204, 0.3);
  text-align: left;
  line-height: 1.8;
  margin-top: 10%;
  margin-bottom: 120px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 255, 204, 0.2);
  transform: translateY(0);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 1s ease-out;
}

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

.content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(0, 255, 204, 0.1), transparent);
  transform: translateX(-100%);
  transition: 0.5s;
}

.content:hover::before {
  transform: translateX(100%);
}

.content:hover {
  transform: translateY(-10px);
  box-shadow: 0 0 40px rgba(0, 255, 204, 0.5);
}

/* Enhanced heading animation */
h2 {
  font-size: 32px;
  margin-bottom: 25px;
  opacity: 0;
  background: linear-gradient(45deg, var(--primary), #fff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: slideFadeIn 1s ease-out forwards;
  text-shadow: 0 0 20px rgba(0, 255, 204, 0.3);
}

/* Enhanced paragraph animation */
p {
  font-size: 17px;
  line-height: 1.8;
  opacity: 0;
  margin-bottom: 20px;
  animation: fadeIn 1.5s ease-out 1s forwards;
  position: relative;
  padding-left: 20px;
  border-left: 2px solid rgba(0, 255, 204, 0.3);
  transition: all 0.3s ease;
}

p:hover {
  border-left-color: var(--primary);
  transform: translateX(10px);
}

/* Enhanced keyframe animations */
@keyframes slideFadeIn {
  0% {
    opacity: 0;
    transform: translateY(-50px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0, 255, 204, 0.1);
  transition: var(--transition);
}

.navbar:hover {
  background: rgba(0, 0, 0, 0.9);
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  text-shadow: 0 0 10px rgba(0, 255, 204, 0.5);
  transition: var(--transition);
}

.logo:hover {
  transform: scale(1.05);
  text-shadow: 0 0 20px rgba(0, 255, 204, 0.8);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-light);
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
  transition: var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links .active::after {
  width: 100%;
}

.nav-links a:hover,
.nav-links .active {
  color: var(--primary);
}

/* Footer */
footer {
  background: linear-gradient(180deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,1) 100%);
  color: #ccc;
  padding: 2rem;
  text-align: center;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-section {
  margin-bottom: 2rem;
}

.footer-section h4 {
  color: var(--primary);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.social-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

.social-links a {
  color: #ccc;
  font-size: 1.5rem;
  transition: var(--transition);
}

.social-links a:hover {
  color: var(--primary);
  transform: translateY(-3px);
}

/* Scroll To Top Button */
#scrollBtn {
  display: none;
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 100;
  font-size: 20px;
  background: var(--primary);
  color: var(--text-dark);
  border: none;
  padding: 15px;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(0, 255, 204, 0.4);
  transition: var(--transition);
}

#scrollBtn:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 30px rgba(0, 255, 204, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
  .navbar {
    padding: 1rem;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .content h2 {
    font-size: 2.5rem;
  }
  
  .footer-content {
    padding: 0 1rem;
  }
  
  .social-links {
    gap: 1rem;
  }
}

/* Interactive Data & ML Section Styles */
.data-ml-section {
  margin-top: 2.5rem;
  background: rgba(0, 255, 204, 0.07);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  box-shadow: 0 0 18px rgba(0,255,204,0.08);
  animation: fadeInUp 1.2s;
}

.data-ml-section h3 {
  color: var(--primary);
  margin-bottom: 1.2rem;
  font-size: 1.5rem;
  letter-spacing: 0.5px;
  text-shadow: 0 0 10px rgba(0,255,204,0.15);
}

.data-list, .ml-list {
  list-style: none;
  padding-left: 0;
  margin-bottom: 1.8rem;
}

.data-list li, .ml-list li {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.04);
  margin-bottom: 0.7rem;
  padding: 0.8rem 1rem;
  border-radius: 10px;
  transition: background 0.3s, transform 0.3s, box-shadow 0.3s;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,255,204,0.04);
}

.data-list li:hover, .ml-list li:hover {
  background: rgba(0,255,204,0.13);
  transform: translateX(8px) scale(1.03);
  box-shadow: 0 4px 16px rgba(0,255,204,0.13);
}

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  margin-right: 1rem;
  font-size: 1.3rem;
  color: var(--primary);
  background: rgba(0,255,204,0.08);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(0,255,204,0.08);
  transition: background 0.3s, color 0.3s, transform 0.3s;
}

.data-list li:hover .icon, .ml-list li:hover .icon {
  background: var(--primary);
  color: var(--text-dark);
  transform: scale(1.15) rotate(-8deg);
}

.data-list b, .ml-list b {
  color: var(--primary-dark);
  margin-right: 0.3rem;
}

@media (max-width: 768px) {
  .data-ml-section {
    padding: 1.2rem 0.5rem;
  }
  .data-list li, .ml-list li {
    font-size: 0.98rem;
    padding: 0.7rem 0.7rem;
  }
  .icon {
    width: 1.7rem;
    height: 1.7rem;
    font-size: 1rem;
    margin-right: 0.7rem;
  }
}