/* ==================== SCIENCE-THEMED MARKETING WEBSITE ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  overflow-x: hidden;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #dbeafe 100%);
  color: #1e40af;
  line-height: 1.6;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ==================== SCIENTIFIC BACKGROUND ELEMENTS ==================== */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(
      circle at 20% 50%,
      rgba(59, 130, 246, 0.03) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 80%,
      rgba(99, 102, 241, 0.03) 0%,
      transparent 50%
    );
  pointer-events: none;
  z-index: -1;
}

/* ==================== NAVIGATION ==================== */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(20px);
  z-index: 1000;
  padding: 1.2rem 2rem;
  border-bottom: 3px solid #3b82f6;
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.15);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, #1e40af, #1e40af, #1e40af);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  /*text-shadow: 0 0 30px rgba(59, 130, 246, 0.3);*/
 
}

.logo-icon {
  font-size: 2.5rem;
  filter: drop-shadow(0 0 15px rgba(59, 130, 246, 0.6));
}
.nav-logo {
  position: relative; /* or just remove position properties */
  height: 50px;
  display: flex;
  align-items: center;
}

.nav-logo img {
  height: 100%;
  width: auto;
  object-fit: contain;
}

/* Adjust for responsive design */
@media (max-width: 768px) {
  .nav-logo {
    height: 40px;
  }
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: #1e40af;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  position: relative;
  padding: 0.5rem 0;
  font-size: 1.05rem;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
  transition: width 0.3s;
  border-radius: 2px;
}

.nav-links a:hover,
.nav-links a:focus-visible{
  color: #3b82f6;
  transform: translateY(-2px);
  outline: 2px solid #60a5fa;
  outline-offset: 4px;
  border-radius: 4px;
}

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

/* ==================== HERO SECTION WITH SCIENCE ELEMENTS ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 8rem 2rem 4rem;
  background: linear-gradient(135deg, #f0f9ff 0%, #dbeafe 50%, #bfdbfe 100%);
}

/* Floating Science Particles */
.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(
      circle at 10% 20%,
      rgba(59, 130, 246, 0.1) 0%,
      transparent 30%
    ),
    radial-gradient(
      circle at 90% 80%,
      rgba(96, 165, 250, 0.1) 0%,
      transparent 30%
    ),
    radial-gradient(
      circle at 50% 50%,
      rgba(147, 197, 253, 0.05) 0%,
      transparent 50%
    );
  animation: particleFloat 20s ease-in-out infinite;
}

@keyframes particleFloat {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-20px) scale(1.05);
  }
}

/* Molecular Structure Background */
.hero::after {
  content: "";
  position: absolute;
  top: 10%;
  right: 5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(
    circle,
    rgba(59, 130, 246, 0.05) 20%,
    transparent 20%
  );
  background-size: 50px 50px;
  animation: moleculeRotate 30s linear infinite;
  opacity: 0.3;
}

@keyframes moleculeRotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.hero-background {
  position: absolute;
  inset: 0;
  z-index: 0;
}

@keyframes bubbleRise {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Rotating Science Image  */
.hero-science-image {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 250px;
  height: 250px;
  opacity: 0.9;
  animation: rotateAndGlow 25s infinite ease-in-out;
  z-index: 1;
  filter: drop-shadow(0 0 30px rgba(59, 130, 246, 0.4));
}

.hero-science-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

@keyframes rotateAndGlow {
  0%,
  100% {
    transform: translateY(-50%) rotate(0deg) scale(1);
    filter: drop-shadow(0 0 40px rgba(59, 130, 246, 0.4));
  }
  25% {
    transform: translateY(-55%) rotate(90deg) scale(1.08);
    filter: drop-shadow(0 0 60px rgba(96, 165, 250, 0.6));
  }
  50% {
    transform: translateY(-50%) rotate(180deg) scale(1);
    filter: drop-shadow(0 0 40px rgba(59, 130, 246, 0.4));
  }
  75% {
    transform: translateY(-45%) rotate(270deg) scale(1.08);
    filter: drop-shadow(0 0 60px rgba(96, 165, 250, 0.6));
  }
}

/* DNA Helix */
.dna-helix {
  position: absolute;
  width: 250px;
  height: 500px;
  left: 8%;
  top: 15%;
  opacity: 0.25;
  animation: dnaFloat 12s infinite ease-in-out;
  z-index: 1;
}

@keyframes dnaFloat {
  0%,
  100% {
    transform: translateY(0) rotateY(0deg);
  }
  50% {
    transform: translateY(-30px) rotateY(180deg);
  }
}

.dna-strand {
  position: absolute;
  width: 100%;
  height: 100%;
}

.dna-strand::before,
.dna-strand::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  box-shadow: 0 0 25px rgba(59, 130, 246, 0.6);
}

.strand-1::before {
  left: 0;
  animation: dnaMove1 4s infinite ease-in-out;
}

.strand-1::after {
  right: 0;
  animation: dnaMove2 4s infinite ease-in-out;
}

@keyframes dnaMove1 {
  0%,
  100% {
    top: 0;
    transform: translateX(0);
  }
  50% {
    top: 50%;
    transform: translateX(60px);
  }
}

@keyframes dnaMove2 {
  0%,
  100% {
    top: 0;
    transform: translateX(0);
  }
  50% {
    top: 50%;
    transform: translateX(-60px);
  }
}

/* 3D Atom Structure */
.atom {
  position: absolute;
  left: 12%;
  bottom: 15%;
  width: 250px;
  height: 250px;
  opacity: 0.35;
  z-index: 1;
}

.nucleus {
  position: absolute;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #1e40af, #3b82f6);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 40px rgba(59, 130, 246, 0.9);
  animation: nucleusPulse 2.5s infinite;
}

@keyframes nucleusPulse {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.9);
  }
  50% {
    transform: translate(-50%, -50%) scale(1.3);
    box-shadow: 0 0 60px rgba(96, 165, 250, 1);
  }
}

.orbit {
  position: absolute;
  border: 3px solid rgba(59, 130, 246, 0.4);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.orbit-1 {
  width: 120px;
  height: 120px;
  animation: orbitSpin1 5s linear infinite;
}

.orbit-2 {
  width: 170px;
  height: 170px;
  animation: orbitSpin2 7s linear infinite reverse;
}

.orbit-3 {
  width: 220px;
  height: 220px;
  animation: orbitSpin3 9s linear infinite;
}

@keyframes orbitSpin1 {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes orbitSpin2 {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(-360deg);
  }
}

@keyframes orbitSpin3 {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

.electron {
  position: absolute;
  width: 18px;
  height: 18px;
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.9);
}

.electron-1 {
  top: 50%;
  left: 50%;
  animation: electronOrbit1 5s linear infinite;
}

.electron-2 {
  top: 50%;
  left: 50%;
  animation: electronOrbit2 7s linear infinite;
}

.electron-3 {
  top: 50%;
  left: 50%;
  animation: electronOrbit3 9s linear infinite;
}

@keyframes electronOrbit1 {
  from {
    transform: translate(-50%, -50%) rotate(0deg) translateX(60px) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg) translateX(60px)
      rotate(-360deg);
  }
}

@keyframes electronOrbit2 {
  from {
    transform: translate(-50%, -50%) rotate(0deg) translateX(85px) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(-360deg) translateX(85px)
      rotate(360deg);
  }
}

@keyframes electronOrbit3 {
  from {
    transform: translate(-50%, -50%) rotate(0deg) translateX(110px) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg) translateX(110px)
      rotate(-360deg);
  }
}

.hero-content {
  text-align: center;
  z-index: 10;
  position: relative;
  max-width: 1000px;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 900;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.title-line {
  background: linear-gradient(135deg, #1e40af, #1e40af, #1e40af);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: titleSlide 1.2s ease-out;
  text-shadow: 0 0 40px rgba(59, 130, 246, 0.3);
  filter: drop-shadow(0 4px 8px rgba(59, 130, 246, 0.2));
}

.title-line:nth-child(2) {
  animation-delay: 0.3s;
}

@keyframes titleSlide {
  from {
    opacity: 0;
    transform: translateX(-100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-subtitle {
  font-size: 2.2rem;
  color: #3b82f6;
  margin-bottom: 1.5rem;
  font-weight: 700;
  animation: fadeInUp 1.2s ease-out 0.5s both;
}

.hero-description {
  font-size: 1.4rem;
  color: #3b82f6;
  margin-bottom: 2.5rem;
  animation: fadeInUp 1.2s ease-out 0.7s both;
  font-weight: 500;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.3rem 3rem;
  background: linear-gradient(135deg, #1e40af, #3b82f6);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1.2rem;
  transition: all 0.4s;
  box-shadow: 0 12px 40px rgba(59, 130, 246, 0.4);
  animation: fadeInUp 1.2s ease-out 0.9s both;
  position: relative;
  overflow: hidden;
}

.cta-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.5s;
}

.cta-button:hover::before {
  left: 100%;
}

.cta-button:hover {
  transform: translateY(-8px) scale(1.05);
  box-shadow: 0 20px 50px rgba(59, 130, 246, 0.5);
}

.cta-button .arrow {
  transition: transform 0.3s;
}

.cta-button:hover .arrow {
  transform: translateX(8px);
}

.scroll-indicator {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  animation: fadeIn 2.5s ease-out 1.2s both;
}

.mouse {
  width: 35px;
  height: 60px;
  border: 4px solid #3b82f6;
  border-radius: 25px;
  position: relative;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.wheel {
  width: 8px;
  height: 12px;
  background: #3b82f6;
  border-radius: 4px;
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  animation: wheelScroll 2.5s infinite;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

@keyframes wheelScroll {
  0% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(25px);
  }
}

.arrow-down {
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 12px solid #3b82f6;
  animation: arrowBounce 2.5s infinite;
  filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.5));
}

@keyframes arrowBounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-12px);
  }
  60% {
    transform: translateY(-6px);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Vertical Image Stack on Left */
.hero-image-stack {
  position: absolute;
  left: 5%;
  top: 50%;
  transform: translateY(-40%);
  display: flex;
  flex-direction: column;
  gap: 2rem;
  z-index: 5;
  margin-top: 5px;
}

.stack-image {
  width: 180px;
  height: 180px;
  border-radius: 25px;
  overflow: hidden;
  border: 4px solid rgba(59, 130, 246, 0.4);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
  transition: all 0.4s ease;
  background: white;
  animation: floatImage 3s ease-in-out infinite;
}

.stack-image:hover {
  transform: scale(1.15) rotate(5deg);
  border-color: #3b82f6;
  box-shadow: 0 15px 45px rgba(59, 130, 246, 0.5);
}

.stack-image-1 {
  animation-delay: 0s;
}

.stack-image-2 {
  animation-delay: 0.5s;
}

.stack-image-3 {
  animation-delay: 1s;
}

@keyframes floatImage {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.stack-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Responsive: hide on smaller screens */
@media (max-width: 1024px) {
  .hero-image-stack {
    display: none;
  }
}
/* ==================== SCROLL ANIMATION BASE ==================== */
.scroll-animate {
  opacity: 0;
  transition: all 1s ease-out;
}

.scroll-animate.from-left {
  transform: translateX(-120px);
}

.scroll-animate.from-right {
  transform: translateX(120px);
}

.scroll-animate.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ==================== SECTION STYLES ==================== */
.section-header {
  text-align: center;
  margin-bottom: 5rem;
  position: relative;
}

.section-header::before {
  content: "";
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 60px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15), transparent);
  border-radius: 50%;
  animation: pulse 3s infinite;
}

.section-title {
  font-size: 3.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, #1e40af, #3b82f6, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.5rem;
  filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.2));
}

.title-underline {
  width: 120px;
  height: 5px;
  background: linear-gradient(90deg, #1e40af, #3b82f6, #60a5fa);
  margin: 0 auto 2rem;
  border-radius: 3px;
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.4);
}

.section-subtitle {
  font-size: 1.3rem;
  color: #3b82f6;
  font-weight: 600;
}

/* ==================== ABOUT SECTION ==================== */
.about-section {
  padding: 8rem 2rem;
  background: linear-gradient(180deg, #f0f9ff 0%, #dbeafe 50%, #f0f9ff 100%);
  position: relative;
  overflow: hidden;
}

.about-section::before {
  content: "";
  position: absolute;
  top: 10%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.08), transparent);
  border-radius: 50%;
  animation: float 15s ease-in-out infinite;
}

.about-section::after {
  content: "";
  position: absolute;
  bottom: 10%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.08), transparent);
  border-radius: 50%;
  animation: float 20s ease-in-out infinite reverse;
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(30px, -30px);
  }
}

.about-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 3rem;
  position: relative;
  z-index: 1;
}

.about-card {
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(20px);
  padding: 3rem;
  border-radius: 25px;
  border: 3px solid rgba(59, 130, 246, 0.3);
  transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 10px 40px rgba(59, 130, 246, 0.15);
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1), transparent);
  transition: all 0.6s;
  transform: scale(0);
}

.about-card:hover::before {
  transform: scale(1);
}

.about-card:hover {
  transform: translateY(-15px) scale(1.03);
  border-color: #3b82f6;
  box-shadow: 0 25px 60px rgba(59, 130, 246, 0.3);
}

.card-icon {
  font-size: 5rem;
  margin-bottom: 2rem;
  display: inline-block;
  filter: drop-shadow(0 0 25px rgba(59, 130, 246, 0.5));
  animation: iconFloat 3s ease-in-out infinite;
  position: relative;
}

/* Create circular orbit path */
.card-icon::before,
.card-icon::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.8);
  top: 50%;
  left: 50%;
}

.card-icon::before {
  animation: orbitAround 4s linear infinite;
}

.card-icon::after {
  animation: orbitAround 4s linear infinite;
  animation-delay: 2s;
}

@keyframes orbitAround {
  0% {
    transform: translate(-50%, -50%) rotate(0deg) translateY(-70px);
  }
  100% {
    transform: translate(-50%, -50%) rotate(360deg) translateY(-70px);
  }
}

.about-card h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: #1e40af;
  font-weight: 800;
}

.about-card p {
  color: #3b82f6;
  line-height: 1.9;
  font-size: 1.05rem;
}

/* ==================== GALLERY SECTION ==================== */
.gallery-section {
  padding: 8rem 2rem;
  background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 50%, #ffffff 100%);
  position: relative;
}

.gallery-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: repeating-linear-gradient(
      90deg,
      rgba(59, 130, 246, 0.03) 0px,
      transparent 2px,
      transparent 40px
    ),
    repeating-linear-gradient(
      0deg,
      rgba(59, 130, 246, 0.03) 0px,
      transparent 2px,
      transparent 40px
    );
  pointer-events: none;
}

/* GALLERY SECTION - 4 COLUMNS */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 4rem;
  position: relative;
  z-index: 1;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 25px;
  box-shadow: 0 15px 45px rgba(59, 130, 246, 0.2);
  transition: all 0.5s;
  aspect-ratio: 4/3;
  border: 3px solid rgba(59, 130, 246, 0.2);
}

.gallery-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(30, 64, 175, 0.3),
    rgba(96, 165, 250, 0.3)
  );
  opacity: 0;
  transition: opacity 0.5s;
  z-index: 1;
}

.gallery-item:hover::before {
  opacity: 1;
}

.gallery-item:hover {
  transform: scale(1.05) translateY(-10px);
  box-shadow: 0 30px 70px rgba(59, 130, 246, 0.4);
  border-color: #3b82f6;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}

.gallery-item:hover img {
  transform: scale(1.15);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(30, 64, 175, 0.9), transparent);
  display: flex;
  align-items: flex-end;
  padding: 2rem;
  opacity: 0;
  transition: opacity 0.4s;
  z-index: 2;
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-caption {
  color: white;
  font-size: 1.3rem;
  font-weight: 700;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* ==================== PROBLEM SECTION - REDUCED PADDING ==================== */
.problem-section {
  padding: 8rem 2rem 4rem 2rem;
  background: linear-gradient(180deg, #eff6ff 0%, #dbeafe 50%, #eff6ff 100%);
  position: relative;
}

.problem-intro {
  max-width: 900px;
  margin: 0 auto 4rem;
  text-align: center;
}

.problem-intro p {
  font-size: 1.3rem;
  color: #3b82f6;
  line-height: 2;
  font-weight: 500;
}

/* PROBLEM SECTION - LAST TWO ITEMS CENTERED */
.problems-grid {
  display: grid;
  grid-template-columns: 1fr; /* default: 1 column */
  gap: 2.5rem;
  margin-bottom: 4rem;
}

@media (min-width: 768px) {
  .problems-grid {
    grid-template-columns: repeat(2, 1fr); /* tablet: 2 columns */
  }
}

@media (min-width: 1024px) {
  .problems-grid {
    grid-template-columns: repeat(3, 1fr); /* desktop: 3 columns */
  }
}

.problem-item {
  background: rgba(255, 255, 255, 0.95);
  padding: 2.5rem;
  border-radius: 20px;
  border: 3px solid rgba(59, 130, 246, 0.3);
  transition: all 0.4s;
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.15);
  position: relative;
  overflow: hidden;
}

.problem-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s;
}

.problem-item:hover::before {
  transform: translateX(0);
}

.problem-item:hover {
  transform: translateY(-12px);
  border-color: #3b82f6;
  box-shadow: 0 20px 50px rgba(59, 130, 246, 0.3);
}

.problem-icon {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  display: block;
  filter: drop-shadow(0 0 15px rgba(59, 130, 246, 0.4));
}

.problem-item h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  color: #1e40af;
  font-weight: 800;
}

.problem-item p {
  color: #3b82f6;
  line-height: 1.8;
  font-size: 1.05rem;
}


.problem-number {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 4rem;
  font-weight: 900;
  background: linear-gradient(
    135deg,
    rgba(239, 68, 68, 0.2),
    rgba(248, 113, 113, 0.2)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.impact-statement {
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.1),
    rgba(96, 165, 250, 0.1)
  );
  padding: 3rem;
  border-radius: 25px;
  border: 3px solid rgba(59, 130, 246, 0.4);
  display: flex;
  align-items: center;
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
  box-shadow: 0 10px 40px rgba(59, 130, 246, 0.2);
}

.impact-icon {
  font-size: 4rem;
  flex-shrink: 0;
  filter: drop-shadow(0 0 20px rgba(59, 130, 246, 0.5));
}

.impact-statement p {
  font-size: 1.2rem;
  color: #1e40af;
  line-height: 2;
  font-weight: 600;
}

/* ==================== SOLUTION SECTION - REDUCED TOP PADDING ==================== */
.solution-section {
  padding: 4rem 2rem 8rem 2rem;
  background: linear-gradient(180deg, #f0f9ff 0%, #dbeafe 50%, #f0f9ff 100%);
  position: relative;
  overflow: hidden;
}

.solution-section::before {
  content: "";
  position: absolute;
  top: 20%;
  right: 10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1), transparent);
  border-radius: 50%;
  animation: pulse 10s ease-in-out infinite;
}

.solution-intro {
  max-width: 900px;
  margin: 0 auto 5rem;
  text-align: center;
}

.solution-intro p {
  font-size: 1.4rem;
  color: #3b82f6;
  line-height: 2;
  font-weight: 600;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
  position: relative;
  z-index: 1;
}

.feature-card {
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(20px);
  padding: 3rem;
  border-radius: 25px;
  border: 3px solid rgba(59, 130, 246, 0.3);
  position: relative;
  transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(59, 130, 246, 0.15);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent,
    rgba(59, 130, 246, 0.1),
    transparent
  );
  transform: rotate(45deg);
  transition: all 0.6s;
}

.feature-card:hover::before {
  left: 100%;
}

.feature-card:hover {
  transform: translateY(-15px) scale(1.03);
  border-color: #3b82f6;
  box-shadow: 0 25px 60px rgba(59, 130, 246, 0.3);
}

.feature-number {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 4rem;
  font-weight: 900;
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.2),
    rgba(96, 165, 250, 0.2)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature-icon {
  font-size: 4rem;
  margin-bottom: 2rem;
  display: block;
  filter: drop-shadow(0 0 25px rgba(59, 130, 246, 0.5));
  animation: featureIconFloat 4s ease-in-out infinite;
}

@keyframes featureIconFloat {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-12px) rotate(5deg);
  }
}

.feature-card h3 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: #1e40af;
  font-weight: 800;
}

.feature-card p {
  color: #3b82f6;
  line-height: 1.9;
  font-size: 1.05rem;
}

/* ==================== TEAM SECTION ==================== */
.team-section {
  padding: 8rem 2rem;
  background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 50%, #ffffff 100%);
  position: relative;
}

.team-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(
      circle at 25% 25%,
      rgba(59, 130, 246, 0.05) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 75% 75%,
      rgba(96, 165, 250, 0.05) 0%,
      transparent 50%
    );
  pointer-events: none;
}
.team-grid {
  display: grid;
  grid-template-columns: 1fr; /* mobile default: 1 item per row */
  gap: 3.5rem;
  perspective: 1000px;
  position: relative;
  z-index: 1;
}

/* Tablet (2 per row) */
@media (min-width: 768px) {
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Small laptop (3 per row) */
@media (min-width: 992px) {
  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Desktop (4 per row) */
@media (min-width: 1200px) {
  .team-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.team-card {
  height: 480px;
  perspective: 1000px;
}

.team-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}

.team-card:hover .team-card-inner {
  transform: rotateY(180deg);
}

.team-card-front,
.team-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 25px;
  overflow: hidden;
  box-shadow: 0 15px 50px rgba(59, 130, 246, 0.2);
}

.team-card-front {
  background: linear-gradient(
    135deg,
    rgba(240, 249, 255, 0.95),
    rgba(219, 234, 254, 0.95)
  );
  border: 3px solid rgba(59, 130, 246, 0.3);
}

.team-card-back {
  background: linear-gradient(
    135deg,
    rgba(219, 234, 254, 0.98),
    rgba(191, 219, 254, 0.98)
  );
  border: 3px solid rgba(59, 130, 246, 0.4);
  transform: rotateY(180deg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2.5rem;
  text-align: center;
}

.member-image {
  width: 100%;
  aspect-ratio: 1600 / 1066; /* keeps all images the same ratio */
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #dbeafe, #bfdbfe);
  border-bottom: 3px solid rgba(59, 130, 246, 0.3); /* optional */
}

.member-image img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* fills container, keeps proportions */
  display: block;
}

.image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.placeholder-icon {
  font-size: 7rem;
  filter: drop-shadow(0 0 25px rgba(59, 130, 246, 0.5));
}

.member-social {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  gap: 0.8rem;
  opacity: 0;
  transition: opacity 0.4s;
}

.team-card:hover .member-social {
  opacity: 1;
}

.social-link {
  width: 45px;
  height: 45px;
  background: rgba(59, 130, 246, 0.9);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.3rem;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.social-link:hover {
  background: #1e40af;
  transform: scale(1.15) rotate(360deg);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.member-info {
  padding: 2.5rem;
}

.member-name {
  font-size: 1.7rem;
  margin-bottom: 0.8rem;
  color: #1e40af;
  font-weight: 800;
}

.member-role {
  color: #3b82f6;
  margin-bottom: 1.8rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.member-skills {
  display: flex;
  flex-wrap: nowrap; /* prevent wrapping */
  gap: 0.8rem;
  overflow-x: auto; /* allow scrolling if too many */
  scrollbar-width: thin; /* optional: slim scrollbar for Firefox */
}

.member-skills::-webkit-scrollbar {
  height: 6px; /* slim horizontal scrollbar */
}

.member-skills::-webkit-scrollbar-thumb {
  background: rgba(59, 130, 246, 0.5);
  border-radius: 10px;
}

.team-card-back h4 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: #1e40af;
  font-weight: 800;
}

.team-card-back p {
  color: #3b82f6;
  line-height: 1.9;
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

.member-quote {
  font-style: italic;
  color: #1e40af;
  padding: 1.2rem;
  border-left: 4px solid #3b82f6;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 8px;
  font-weight: 600;
}

/* ==================== FOOTER ==================== */
.footer {
  padding: 4rem 2rem;
  background: linear-gradient(135deg, #f0f9ff, #dbeafe);
  border-top: 3px solid #3b82f6;
  box-shadow: 0 -10px 40px rgba(59, 130, 246, 0.1);
}

.footer-content {
  text-align: center;
}

.footer-logo {
  font-size: 2rem;
  font-weight: 900;
  background: linear-gradient(135deg, #1e40af, #1e40af, #1e40af);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
}

.footer-text {
  color: #3b82f6;
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.footer-copyright {
  color: #60a5fa;
  font-size: 1rem;
  font-weight: 500;
}

/* ==================== TECHNOLOGIES SECTION ==================== */
.technologies-section {
  padding: 8rem 2rem;
  background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 100%);
  overflow: hidden;
  position: relative;
}

.technologies-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(
    circle at 20% 50%,
    rgba(59, 130, 246, 0.05) 0%,
    transparent 50%
  );
  pointer-events: none;
}

.tech-slider {
  margin-top: 4rem;
  position: relative;
  overflow: hidden;
  padding: 2rem 0;
  width: 100vw; /* Full viewport width */
  margin-left: calc(-50vw + 50%); /* Center it despite being full width */
}

.tech-track {
  display: flex;
  gap: 4rem;
  animation: slideLeft 40s linear infinite;
  width: fit-content;
}

@keyframes slideLeft {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.tech-item {
  flex-shrink: 0;
  position: relative;
}

.tech-circle {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(20px);
  border: 3px solid rgba(59, 130, 246, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  transition: all 0.4s;
  box-shadow: 0 10px 40px rgba(59, 130, 246, 0.15);
  position: relative;
  overflow: visible;
}

/* Orbiting Scientific Elements */
.tech-circle::before,
.tech-circle::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.6);
}

.tech-circle::before {
  animation: orbit1 4s linear infinite;
}

.tech-circle::after {
  animation: orbit2 4s linear infinite;
  animation-delay: 2s;
}

@keyframes orbit1 {
  from {
    transform: rotate(0deg) translateX(90px) rotate(0deg);
  }
  to {
    transform: rotate(360deg) translateX(90px) rotate(-360deg);
  }
}

@keyframes orbit2 {
  from {
    transform: rotate(0deg) translateX(90px) rotate(0deg);
  }
  to {
    transform: rotate(360deg) translateX(90px) rotate(-360deg);
  }
}

.tech-circle:hover {
  transform: translateY(-15px) scale(1.1);
  border-color: #3b82f6;
  box-shadow: 0 20px 60px rgba(59, 130, 246, 0.3);
}

.tech-circle img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(59, 130, 246, 0.2));
}

/* Navigation Arrows */
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 60px;
  background: rgba(59, 130, 246, 0.9);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 3px solid rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  z-index: 10;
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
}

.slider-arrow:hover {
  background: #1e40af;
  transform: translateY(-50%) scale(1.15);
  box-shadow: 0 12px 40px rgba(59, 130, 246, 0.6);
}

.slider-arrow-left {
  left: -30px;
}

.slider-arrow-right {
  right: -30px;
}

/* Pause animation on hover */
.tech-slider:hover .tech-track {
  animation-play-state: paused;
}

@media (max-width: 768px) {
  .tech-circle {
    width: 120px;
    height: 120px;
  }

  .slider-arrow {
    width: 45px;
    height: 45px;
  }

  .slider-arrow-left {
    left: 10px;
  }

  .slider-arrow-right {
    right: 10px;
  }
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1fr; /* Mobile: 1 column */
  gap: 2rem;
  margin-top: 4rem;
  position: relative;
  z-index: 1;
}

/* --- Mobile Navigation --- */
.menu-toggle {
  display: none; /* Hidden by default */
  background: none;
  border: none;
  color: #3b82f6;
  font-size: 2rem;
  cursor: pointer;
  z-index: 1001; /* Make sure it's on top */
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block; /* Show on mobile */
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    padding: 2rem;
    gap: 1.5rem;
    border-top: 2px solid rgba(59, 130, 246, 0.3);
  }

  .nav-links.active {
    display: flex; /* Show menu when active */
  }
}

@media (min-width: 576px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr); /* Small Tablet: 2 columns */
  }
}

@media (min-width: 992px) {
  .gallery-grid {
    grid-template-columns: repeat(4, 1fr); /* Desktop: 4 columns */
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 3rem;
  }

  .hero-subtitle {
    font-size: 1.6rem;
  }

  .hero-description {
    font-size: 1.1rem;
  }

  /* Hide complex animations that can clutter small screens */
  .dna-helix,
  .atom,
  .hero::after {
    display: none;
  }
  
  /* Reposition or resize other elements */
  .hero-science-image {
      width: 150px;
      height: 150px;
      opacity: 0.5;
      top: 15%; /* Example reposition */
  }
}


/* Minimize animation for users who need it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}