/* CSS Design System Variables */
:root {
  /* Color Palette */
  --color-dark-base: #0a1429;
  --color-dark-secondary: #16213e;
  --color-dark-tertiary: #0f172a;
  --color-gradient-dark: linear-gradient(135deg, #0a1429 0%, #16213e 50%, #0f172a 100%);
  
  --color-cyan-light: #a8edea;
  --color-cyan-bright: #00d9ff;
  --color-cyan-purple: #e0c3fc;
  --color-purple-accent: #9b59b6;
  --color-red-accent: #e74c3c;
  
  --color-gradient-text: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 50%, #00d9ff 100%);
  --color-gradient-button: linear-gradient(135deg, #9b59b6 0%, #e74c3c 100%);
  
  --color-text-primary: #a8edea;
  --color-text-secondary: #e0c3fc;
  --color-text-hover: #00d9ff;
  
  /* Spacing System (8px base) */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 2.5rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Typography */
  --font-primary: "Poppins", sans-serif;
  --font-secondary: "Nunito", sans-serif;
  --font-size-sm: 1.5rem;
  --font-size-base: 1.7rem;
  --font-size-lg: 2rem;
  --font-size-xl: 2.5rem;
  --font-size-2xl: 3rem;
  --font-size-3xl: 3.5rem;
  --font-size-4xl: 4rem;
  
  --font-weight-normal: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extra-bold: 800;
  
  /* Shadow System */
  --shadow-sm: 0 2px 8px rgba(155, 89, 182, 0.1);
  --shadow-md: 0 0 20px rgba(155, 89, 182, 0.2);
  --shadow-lg: 0 0 30px rgba(155, 89, 182, 0.3);
  --shadow-glow: 0 0 20px rgba(155, 89, 182, 0.6);
  --shadow-glow-bright: 0 0 30px rgba(0, 217, 255, 0.4);
  
  /* Backdrop Effects */
  --backdrop-blur: blur(10px);
  
  /* Animation Timings */
  --duration-fast: 0.2s;
  --duration-base: 0.3s;
  --duration-slow: 0.5s;
  --ease-in-out: ease-in-out;
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-full: 50%;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  text-decoration: none;
  outline: none;
  border: none;
  text-transform: none;
  transition: all 0.2s linear;
}
html {
  font-size: 62.5%;
  overflow-x: hidden;
  scroll-behavior: smooth;
}
body {
  background: #f7f7f7;
  font-family: "Poppins", sans-serif;
}

*::selection {
  background: #2b3dda;
  color: #fff;
}

html {
  font-size: 62.5%;
  overflow-x: hidden;
}
html::-webkit-scrollbar {
  width: 0.8rem;
}
html::-webkit-scrollbar-track {
  background: rgb(235, 202, 245);
}
html::-webkit-scrollbar-thumb {
  background: #420177;
}

/* pre loader start */
.loader-container {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 10000;
  background: #e6eff1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  width: 100%;
}
.loader-container.fade-out {
  top: -120%;
}
/* pre loader end */

/* navbar starts */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.7rem 10%;
  height: 6.5rem;
  background-color: rgba(10, 20, 41, 0.95);
  box-shadow: 0 0 20px rgba(155, 89, 182, 0.3);
  border-bottom: 1px solid rgba(155, 89, 182, 0.2);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
section {
  min-height: 100vh;
  padding: 2rem 9%;
}
.heading {
  font-size: 3.5rem;
  color: rgb(32, 32, 32);
  font-weight: 800;
  text-align: center;
}

.heading span {
  color: rgb(115, 3, 167);
}

.about .heading {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 50%, #00d9ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGlow 3s ease-in-out infinite;
  filter: drop-shadow(0 0 15px rgba(155, 89, 182, 0.4));
}

.about .heading i {
  margin-right: 1rem;
  color: #9b59b6;
}
header .logo {
  font-size: 1.9rem;
  font-weight: 800;
  text-decoration: none;
  color: #e0c3fc;
  transition: all 0.3s ease;
}
header .logo i {
  font-size: 3rem;
}
header .logo:hover {
  color: #00d9ff;
  text-shadow: 0 0 15px rgba(0, 217, 255, 0.8);
}
header .navbar ul {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
}
header .navbar li {
  margin-left: 2.5rem;
}
header .navbar ul li a {
  font-size: 1.57rem;
  color: #a8edea;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.04rem;
  transition: all 0.3s ease;
}
header .navbar ul li a.active,
header .navbar ul li a:hover {
  color: #00d9ff;
  border-bottom: 0.2rem solid #00d9ff;
  padding: 0.5rem 0;
  text-shadow: 0 0 10px rgba(0, 217, 255, 0.6);
}
/* navbar ends */

/* hamburger icon starts*/
#menu {
  font-size: 3rem;
  cursor: pointer;
  color: #a8edea;
  display: none;
  transition: all 0.3s ease;
}
#menu:hover {
  color: #00d9ff;
  text-shadow: 0 0 10px rgba(0, 217, 255, 0.6);
}
@media (max-width: 768px) {
  #menu {
    display: block;
  }
  header .navbar {
    position: fixed;
    top: 6.5rem;
    right: -120%;
    width: 75%;
    height: 100%;
    text-align: left;
    align-items: flex-start;
    background: linear-gradient(135deg, #0a1429 0%, #16213e 50%, #0f172a 100%);
  }
  header .navbar ul {
    flex-flow: column;
    padding: 1rem;
  }
  header .navbar ul li {
    text-align: center;
    width: 100%;
    margin: 1rem 0;
    border-radius: 0.5rem;
    width: 26rem;
  }
  header .navbar ul li a {
    display: block;
    padding: 1rem;
    text-align: left;
    color: #a8edea;
    font-size: 2rem;
  }
  header .navbar ul li a.active,
  header .navbar ul li a:hover {
    padding: 1rem;
    color: #00d9ff;
    border-radius: 0.5rem;
    border-bottom: 0.5rem solid #00d9ff;
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.6);
  }
  .fa-times {
    transform: rotate(180deg);
  }
  header .navbar.nav-toggle {
    right: 0;
  }
}
/* hamburger icon ends */

/* hero section starts*/
.home {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  min-height: 100vh;
  min-height: 100svh; /* fits visible area on mobile while the URL bar shows */
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0a1429 0%, #16213e 50%, #0a1429 100%) !important;
  box-shadow: inset 0 0 200px rgba(155, 89, 182, 0.05);
}

.home #gw-hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  inset: 0;
  height: 100%;
  width: 100%;
  z-index: 0;
  display: block;
  pointer-events: none;
}

/* The gravitational-wave inspiral is now drawn on #gw-hero-canvas,
   so the old CSS pseudo-element black holes are disabled. */
.home::before,
.home::after {
  display: none !important;
}

.home .image {
  position: relative;
  z-index: 2;
}

.home::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 50px;
  height: 50px;
  background: radial-gradient(circle at 30% 30%, rgba(155, 89, 182, 0.3), #000);
  border-radius: 50%;
  box-shadow: 
    0 0 60px rgba(155, 89, 182, 1),
    0 0 120px rgba(155, 89, 182, 0.6),
    inset -10px -10px 30px rgba(0, 0, 0, 0.9),
    0 0 40px rgba(155, 89, 182, 0.8);
  animation: blackHoleInspiral1 10s linear infinite;
  z-index: 1;
  pointer-events: none;
}

/* Black hole 2 - inspiral from opposite corner */
.home::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 50px;
  height: 50px;
  background: radial-gradient(circle at 30% 30%, rgba(52, 152, 219, 0.3), #000);
  border-radius: 50%;
  box-shadow: 
    0 0 60px rgba(52, 152, 219, 1),
    0 0 120px rgba(52, 152, 219, 0.6),
    inset -10px -10px 30px rgba(0, 0, 0, 0.9),
    0 0 40px rgba(52, 152, 219, 0.8);
  animation: blackHoleInspiral2 10s linear infinite;
  z-index: 1;
  pointer-events: none;
}

/* Black hole 1 - uniform counterclockwise orbital inspiral */
@keyframes blackHoleInspiral1 {
  0% {
    transform: rotate(0deg) translateX(280px) rotate(-0deg) scale(0.9);
    filter: blur(0px);
  }
  10% {
    transform: rotate(36deg) translateX(250px) rotate(-36deg) scale(0.92);
    filter: blur(0.15px);
  }
  20% {
    transform: rotate(72deg) translateX(220px) rotate(-72deg) scale(0.94);
    filter: blur(0.3px);
  }
  30% {
    transform: rotate(108deg) translateX(190px) rotate(-108deg) scale(0.96);
    filter: blur(0.45px);
  }
  40% {
    transform: rotate(144deg) translateX(160px) rotate(-144deg) scale(0.98);
    filter: blur(0.6px);
  }
  50% {
    transform: rotate(180deg) translateX(130px) rotate(-180deg) scale(1.0);
    filter: blur(0.8px);
  }
  60% {
    transform: rotate(216deg) translateX(100px) rotate(-216deg) scale(1.05);
    filter: blur(1px);
  }
  70% {
    transform: rotate(252deg) translateX(70px) rotate(-252deg) scale(1.08);
    filter: blur(1.3px);
  }
  80% {
    transform: rotate(288deg) translateX(40px) rotate(-288deg) scale(1.1);
    filter: blur(1.6px);
  }
  88% {
    transform: rotate(316.8deg) translateX(5px) rotate(-316.8deg) scale(1.12);
    filter: blur(2.2px);
  }
  90% {
    transform: rotate(324deg) translateX(2px) rotate(-324deg) scale(0.5);
    filter: blur(3px);
    opacity: 0.2;
  }
  100% {
    transform: rotate(360deg) translateX(0px) rotate(-360deg) scale(0);
    filter: blur(4px);
    opacity: 0;
  }
}

/* Black hole 2 - uniform counterclockwise (180° offset, opposite side) */
@keyframes blackHoleInspiral2 {
  0% {
    transform: rotate(180deg) translateX(280px) rotate(-180deg) scale(0.9);
    filter: blur(0px);
  }
  10% {
    transform: rotate(216deg) translateX(250px) rotate(-216deg) scale(0.92);
    filter: blur(0.15px);
  }
  20% {
    transform: rotate(252deg) translateX(220px) rotate(-252deg) scale(0.94);
    filter: blur(0.3px);
  }
  30% {
    transform: rotate(288deg) translateX(190px) rotate(-288deg) scale(0.96);
    filter: blur(0.45px);
  }
  40% {
    transform: rotate(324deg) translateX(160px) rotate(-324deg) scale(0.98);
    filter: blur(0.6px);
  }
  50% {
    transform: rotate(360deg) translateX(130px) rotate(-360deg) scale(1.0);
    filter: blur(0.8px);
  }
  60% {
    transform: rotate(396deg) translateX(100px) rotate(-396deg) scale(1.05);
    filter: blur(1px);
  }
  70% {
    transform: rotate(432deg) translateX(70px) rotate(-432deg) scale(1.08);
    filter: blur(1.3px);
  }
  80% {
    transform: rotate(468deg) translateX(40px) rotate(-468deg) scale(1.1);
    filter: blur(1.6px);
  }
  88% {
    transform: rotate(496.8deg) translateX(5px) rotate(-496.8deg) scale(1.12);
    filter: blur(2.2px);
  }
  90% {
    transform: rotate(504deg) translateX(2px) rotate(-504deg) scale(0.5);
    filter: blur(3px);
    opacity: 0.2;
  }
  100% {
    transform: rotate(540deg) translateX(0px) rotate(-540deg) scale(0);
    filter: blur(4px);
    opacity: 0;
  }
}

/* Gravitational wave emission - expanding rings (uniform expansion) */
@keyframes gwEmission1 {
  0% {
    width: 0px;
    height: 0px;
    opacity: 0.4;
  }
  100% {
    width: 600px;
    height: 600px;
    opacity: 0;
  }
}

@keyframes gwEmission2 {
  0% {
    width: 0px;
    height: 0px;
    opacity: 0;
  }
  25% {
    width: 0px;
    height: 0px;
    opacity: 0;
  }
  100% {
    width: 650px;
    height: 650px;
    opacity: 0;
  }
}

/* GW ringdown after merger - strong final burst */
@keyframes gwRingdown {
  85% {
    width: 0px;
    height: 0px;
    opacity: 0;
  }
  90% {
    width: 150px;
    height: 150px;
    opacity: 0.8;
  }
  100% {
    width: 700px;
    height: 700px;
    opacity: 0;
  }
}

@keyframes wobble {
  0%, 100% {
    transform: translate(0, 0);
  }
  25% {
    transform: translate(-1.5px, 1.5px);
  }
  50% {
    transform: translate(1.5px, -1.5px);
  }
  75% {
    transform: translate(-1.5px, -1.5px);
  }
}

.home .content {
  flex: 1 1 40rem;
  padding-top: 1rem;
  z-index: 2;
  position: relative;
}

/* GW wave emission 1 */
/* GW wave emission 1 - from center of mass */
.home .content::before {
  display: none !important;
}

/* GW wave emission 2 - from center of mass */
.home .content::after {
  display: none !important;
}

/* Merged black hole - forms after binary merger */
@keyframes mergedBlackHole {
  0%, 88% {
    width: 0px;
    height: 0px;
    opacity: 0;
    transform: scale(0);
  }
  90% {
    width: 80px;
    height: 80px;
    opacity: 0.7;
    transform: scale(0.8);
  }
  92% {
    width: 100px;
    height: 100px;
    opacity: 0.95;
    transform: scale(1);
  }
  98% {
    width: 100px;
    height: 100px;
    opacity: 0.95;
    transform: scale(1);
  }
  100% {
    width: 100px;
    height: 100px;
    opacity: 0;
    transform: scale(1);
  }
}

.home .image::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle at 35% 35%, rgba(200, 150, 255, 0.4), #000);
  border-radius: 50%;
  box-shadow: 
    0 0 80px rgba(155, 89, 182, 1),
    0 0 160px rgba(155, 89, 182, 0.7),
    inset -15px -15px 40px rgba(0, 0, 0, 1),
    0 0 50px rgba(200, 150, 255, 0.9),
    inset 0 0 30px rgba(155, 89, 182, 0.3);
  animation: mergedBlackHole 10s linear infinite;
  z-index: 0;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

/* GW ringdown burst after merger */
.home .image::after {
  display: none !important;
}

.home .image img {
  width: 85%;
  max-width: 380px;
  height: auto; /* override the height attribute so aspect-ratio below keeps the circle */
  margin-left: 2rem;
  border-radius: 50%;
  border: 4px solid rgba(155, 89, 182, 0.6);
  box-shadow: 0 0 40px rgba(155, 89, 182, 0.6), 
              0 0 80px rgba(52, 152, 219, 0.3),
              inset 0 0 40px rgba(155, 89, 182, 0.1);
  cursor: pointer;
  transition: all 0.4s ease;
  animation: float 3s ease-in-out infinite, wobble 0.7s ease-in-out infinite;
  object-fit: cover;
  aspect-ratio: 1/1;
  position: relative;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

.home .image img:hover {
  box-shadow: 0 0 50px rgba(155, 89, 182, 0.8), 
              0 0 100px rgba(52, 152, 219, 0.5),
              inset 0 0 40px rgba(155, 89, 182, 0.2);
  transform: scale(1.05);
  animation: none;
}

.home .content h2 {
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 50%, #00d9ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(155, 89, 182, 0.5);
  animation: textGlow 3s ease-in-out infinite, wobble 0.7s ease-in-out infinite;
  letter-spacing: -0.02em;
  position: relative;
}

@keyframes textGlow {
  0%, 100% {
    filter: drop-shadow(0 0 10px rgba(155, 89, 182, 0.4));
  }
  50% {
    filter: drop-shadow(0 0 20px rgba(155, 89, 182, 0.8));
  }
}

.home .content h2 span {
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #ff6b6b 0%, #feca57 50%, #ff9f43 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: colorShift 4s ease-in-out infinite;
}

@keyframes colorShift {
  0%, 100% {
    filter: drop-shadow(0 0 8px rgba(255, 107, 107, 0.4));
  }
  50% {
    filter: drop-shadow(0 0 15px rgba(255, 159, 67, 0.8));
  }
}

.home .content p {
  font-size: 2.5rem;
  background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
  padding: 1rem 0;
  animation: slideIn 0.8s ease 0.2s forwards, wobble 0.7s ease-in-out infinite 0.8s;
  opacity: 0;
  position: relative;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.home .content p span {
  font-size: 2.5rem;
  background: linear-gradient(135deg, #ff006e 0%, #ff3c87 50%, #ff006e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  padding: 1rem 0;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    filter: drop-shadow(0 0 5px rgba(255, 0, 110, 0.3));
  }
  50% {
    opacity: 0.8;
    filter: drop-shadow(0 0 15px rgba(255, 0, 110, 0.8));
  }
}

.home .btn {
  margin-top: 3.5rem;
  position: absolute;
  line-height: 0;
  padding: 1.6rem 3rem;
  border-radius: 50px;
  transition: all 0.4s ease;
  color: #fff;
  background: linear-gradient(135deg, #9b59b6 0%, #e74c3c 100%);
  box-shadow: 0px 8px 25px rgba(155, 89, 182, 0.6),
              0 0 20px rgba(231, 76, 60, 0.4);
  font-family: "Nunito", sans-serif;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
  animation: wobble 0.7s ease-in-out infinite;
}

.home .btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.2) 50%, transparent 100%);
  transition: left 0.5s ease;
}

.home .btn span {
  font-weight: 700;
  font-size: 1.7rem;
  letter-spacing: 0.1rem;
  position: relative;
  z-index: 1;
}

.home .btn i {
  margin-left: 0.3rem;
  font-size: 1.5rem;
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.home .btn:hover {
  background: linear-gradient(135deg, #e74c3c 0%, #9b59b6 100%);
  box-shadow: 0px 12px 35px rgba(231, 76, 60, 0.8),
              0 0 30px rgba(155, 89, 182, 0.6);
  transform: translateY(-3px);
}

.home .btn:hover::before {
  left: 100%;
}

.home .btn:hover i {
  transform: translateX(8px);
  animation: bounce 0.6s ease;
}

@keyframes bounce {
  0%, 100% {
    transform: translateX(8px);
  }
  50% {
    transform: translateX(15px);
  }
}

/* social icons start */
.socials {
  position: relative;
  margin-top: 5rem;
  z-index: 2;
  animation: wobble 0.7s ease-in-out infinite;
}

.socials .social-icons {
  padding-left: 0;
  margin-bottom: 0;
  list-style: none;
}

.socials .social-icons li {
  display: inline-block;
  margin-bottom: 14px;
}

.social-icons a {
  font-size: 2rem;
  display: inline-block;
  line-height: 44px;
  color: #00d9ff;
  background-color: rgba(9, 1, 27, 0.6);
  width: 44px;
  height: 44px;
  text-align: center;
  margin-right: 8px;
  border-radius: 100%;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  box-shadow: 0 0 15px rgba(155, 89, 182, 0.3);
}

.social-icons a:active,
.social-icons a:focus,
.social-icons a:hover {
  color: #fff;
  background: linear-gradient(135deg, #9b59b6, #e74c3c);
  box-shadow: 0 0 25px rgba(155, 89, 182, 0.8),
              0 0 40px rgba(231, 76, 60, 0.5);
  transform: translateY(-5px);
}

.social-icons a.github:hover {
  background: linear-gradient(135deg, #0e0e0e, #1a1a1a);
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.5);
}

.social-icons a.linkedin:hover {
  background: linear-gradient(135deg, #007bb6, #0099ff);
  box-shadow: 0 0 25px rgba(0, 123, 182, 0.8);
}

.social-icons a.dev:hover {
  background: linear-gradient(135deg, #070707, #2a2a2a);
  box-shadow: 0 0 25px rgba(200, 200, 200, 0.5);
}

.social-icons a.instagram:hover {
  background: linear-gradient(135deg, #ee00da, #ff6b6b);
  box-shadow: 0 0 25px rgba(238, 0, 218, 0.8);
}

/* social icons end */

/* hero media queries starts*/
@media (max-width: 768px) {
  /* on stacked mobile layout the hero grows past the viewport, so the
     content starts at the top — clear the 6.5rem fixed navbar */
  .home {
    padding-top: 9rem;
  }
}

@media (max-width: 450px) {
  .home {
    background: linear-gradient(135deg, #0a1429 0%, #1a0a2e 50%, #0a1429 100%);
  }

  .home .btn {
    margin: 2.5rem 0;
  }

  .socials {
    margin-top: 6rem;
  }

  .home .image img {
    margin-top: 0;
    width: 90%;
    max-width: 250px;
    margin-left: 0;
  }

  .home .content p {
    font-size: 2.2rem;
  }

  .home .content p span {
    font-size: 2.2rem;
  }

  .home .content h2 {
    font-size: 3.5rem;
  }

  .home .content h2 span {
    font-size: 3.5rem;
  }
}
/* hero media queries ends*/
/* hero section end */

/* about section starts */
.about {
  background: linear-gradient(135deg, #0a1429 0%, #16213e 50%, #0f172a 100%);
  position: relative;
  overflow: hidden;
}

.about::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 50%, rgba(155, 89, 182, 0.05) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(52, 152, 219, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}
.about .row {
  display: flex;
  flex-direction: row;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 4rem;
  position: relative;
  z-index: 1;
}
.about .row .image {
  text-align: center;
  flex: 1 1 35rem;
}
.about .row .image img {
  margin: 4rem;
  width: 30rem;
  height: auto;
  border-radius: 50%;
  border: 3px solid rgba(155, 89, 182, 0.6);
  box-shadow: 0 0 40px rgba(155, 89, 182, 0.6),
              0 0 80px rgba(52, 152, 219, 0.3),
              inset 0 0 40px rgba(155, 89, 182, 0.1);
  mix-blend-mode: luminosity;
  transition: all 0.3s ease;
  cursor: pointer;
  animation: imageGlow 3s ease-in-out infinite;
}

@keyframes imageGlow {
  0%, 100% {
    box-shadow: 0 0 40px rgba(155, 89, 182, 0.6),
                0 0 80px rgba(52, 152, 219, 0.3),
                inset 0 0 40px rgba(155, 89, 182, 0.1);
  }
  50% {
    box-shadow: 0 0 60px rgba(155, 89, 182, 0.8),
                0 0 120px rgba(52, 152, 219, 0.5),
                inset 0 0 50px rgba(155, 89, 182, 0.2);
  }
}
.about .row .image img:hover {
  mix-blend-mode: normal;
}
.about .row .content {
  flex: 1 1 45rem;
  padding: 3rem;
}

.about .row .content h3 {
  color: #fff;
  font-size: 2.5rem;
}

.about .row .content .tag {
  font-size: 1.5rem;
  background: linear-gradient(135deg, #9b59b6 0%, #e74c3c 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  margin-top: 1rem;
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border: 1px solid rgba(155, 89, 182, 0.4);
  border-radius: 50px;
  background: rgba(155, 89, 182, 0.1);
  -webkit-text-fill-color: #fff;
  animation: tagGlow 2s ease-in-out infinite;
}

@keyframes tagGlow {
  0%, 100% {
    box-shadow: 0 0 10px rgba(155, 89, 182, 0.3);
  }
  50% {
    box-shadow: 0 0 20px rgba(155, 89, 182, 0.6);
  }
}

.about .row .content p {
  font-size: 1.6rem;
  margin-top: 1.5rem;
  font-family: "Nunito";
  font-weight: 400;
  text-transform: none;
  color: #a8edea;
  line-height: 1.8;
}

.about .row .content p a {
  color: #00d9ff;
  text-decoration: none;
  font-weight: 600;
  border-bottom: 2px solid rgba(0, 217, 255, 0.3);
  transition: all 0.3s ease;
}

.about .row .content p a:hover {
  border-bottom: 2px solid rgba(0, 217, 255, 0.8);
  color: #fff;
}
.about .row .content .box-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-family: "Nunito";
  font-weight: 600;
  margin-top: 2rem;
}

.about .row .content .box-container .box {
  flex: 1 1 20rem;
  padding: 2rem;
  background: rgba(155, 89, 182, 0.1);
  border: 1px solid rgba(155, 89, 182, 0.3);
  border-radius: 10px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  animation: boxHover 2s ease-in-out infinite;
}

@keyframes boxHover {
  0%, 100% {
    border-color: rgba(155, 89, 182, 0.3);
    box-shadow: 0 0 15px rgba(155, 89, 182, 0.1);
  }
  50% {
    border-color: rgba(52, 152, 219, 0.5);
    box-shadow: 0 0 25px rgba(52, 152, 219, 0.2);
  }
}

.about .row .content .box-container .box:hover {
  background: rgba(155, 89, 182, 0.2);
  border-color: rgba(155, 89, 182, 0.6);
  box-shadow: 0 0 30px rgba(155, 89, 182, 0.3);
  transform: translateY(-3px);
}

.about .row .content .box-container .box p {
  text-transform: none;
  color: #a8edea;
  font-size: 1.4rem;
  margin: 0.8rem 0;
}

.about .row .content .box-container .box p span {
  color: #00d9ff;
  font-weight: 700;
}
.resumebtn {
  margin-top: 3rem;
}

.resumebtn .btn {
  padding: 1.5rem 3rem;
  border-radius: 50px;
  transition: all 0.4s ease;
  color: #fff;
  background: linear-gradient(135deg, #9b59b6 0%, #e74c3c 100%);
  box-shadow: 0px 8px 25px rgba(155, 89, 182, 0.6),
              0 0 20px rgba(231, 76, 60, 0.4);
  font-family: "Nunito", sans-serif;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
  display: inline-block;
  animation: btnGlow 2s ease-in-out infinite;
}

@keyframes btnGlow {
  0%, 100% {
    box-shadow: 0px 8px 25px rgba(155, 89, 182, 0.6),
                0 0 20px rgba(231, 76, 60, 0.4);
  }
  50% {
    box-shadow: 0px 12px 35px rgba(155, 89, 182, 0.8),
                0 0 30px rgba(231, 76, 60, 0.6);
  }
}

.resumebtn .btn span {
  font-weight: 600;
  font-size: 1.8rem;
  letter-spacing: 0.1rem;
}

.resumebtn .btn i {
  margin-left: 0.5rem;
  font-size: 1.2rem;
  transition: 0.3s ease;
}

.resumebtn .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0px 15px 40px rgba(155, 89, 182, 1),
              0 0 40px rgba(231, 76, 60, 0.8);
}

.resumebtn .btn:hover i {
  transform: translateX(5px);
}
/* about media queries starts*/
@media screen and (max-width: 600px) {
  .about .row .image {
    margin-top: 2rem;
  }
  .about .row .image img {
    margin: 0 auto;
    width: 80%;
    mix-blend-mode: normal;
  }
  .about .row {
    padding: 0.5rem;
    margin-bottom: 7rem;
  }
  .about .row .content {
    padding: 1rem;
  }
  .about .row .content .box-container {
    gap: 0;
  }
}
/* about media queries ends*/
/* about section ends */

/* Research section starts */

.research {
  min-height: 90vh;
  background: linear-gradient(135deg, #0a1429 0%, #16213e 50%, #0f172a 100%);
  position: relative;
  overflow: hidden;
}

.research::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 20% 50%, rgba(155, 89, 182, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(52, 152, 219, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.research .heading {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 50%, #00d9ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGlow 3s ease-in-out infinite;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 0 15px rgba(155, 89, 182, 0.4));
}

.research h2 {
  color: #a8edea;
  font-size: 3rem;
}

.research p {
  color: #a8edea;
  font-size: 1.6rem;
}

.research h3 {
  color: #a8edea;
  font-size: 2.7rem;
}

.research .heading span {
  color: #00d9ff;
}

.research .row {
  display: flex;
  flex-direction: row;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 4rem;
  position: relative;
  z-index: 2;
}

.research .row .image {
  text-align: center;
  flex: 1 1 35rem;
}

.research .row .image img {
  margin: 4rem;
  width: 30rem;
  height: auto;
  border-radius: 50%;
  border: 3px solid rgba(155, 89, 182, 0.6);
  box-shadow: 0 0 40px rgba(155, 89, 182, 0.6),
              0 0 80px rgba(52, 152, 219, 0.3),
              inset 0 0 40px rgba(155, 89, 182, 0.1);
  mix-blend-mode: luminosity;
  transition: all 0.3s ease;
  cursor: pointer;
  animation: imageGlow 3s ease-in-out infinite;
}

.research .row .image img:hover {
  mix-blend-mode: normal;
  box-shadow: 0 0 60px rgba(155, 89, 182, 0.8),
              0 0 100px rgba(52, 152, 219, 0.5),
              inset 0 0 40px rgba(155, 89, 182, 0.2);
}

.research .row .content {
  flex: 1 1 45rem;
  padding: 3rem;
}

.research .row .content h2 {
  color: #e0c3fc;
  font-size: 3.5rem;
}

.research .row .content .tag {
  font-size: 1.4rem;
  color: #00d9ff;
  font-weight: 600;
  margin-top: 1rem;
  background: rgba(155, 89, 182, 0.2);
  padding: 0.8rem 1.5rem;
  border-radius: 50px;
  border: 1px solid rgba(155, 89, 182, 0.4);
  display: inline-block;
  animation: tagGlow 2s ease-in-out infinite;
}

.research .row .content p {
  font-size: 1.5rem;
  margin-top: 1.5rem;
  font-family: "Nunito";
  font-weight: 600;
  text-transform: none;
  color: #a8edea;
}

.research .row .content .box-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-family: "Nunito";
  font-weight: 600;
}

.research .row .content .box-container .box {
  padding: 2rem;
  background: rgba(155, 89, 182, 0.1);
  border: 1px solid rgba(155, 89, 182, 0.3);
  border-radius: 10px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  animation: boxHover 2s ease-in-out infinite;
}

.research .row .content .box-container .box:hover {
  background: rgba(155, 89, 182, 0.2);
  border-color: rgba(155, 89, 182, 0.6);
  box-shadow: 0 0 30px rgba(155, 89, 182, 0.3);
  transform: translateY(-3px);
}

.research .row .content .box-container .box p {
  text-transform: none;
  color: #a8edea;
}

.research .row .content .box-container .box p span {
  color: #00d9ff;
  font-weight: 700;
}

/* Research Accordion */
.research-accordion {
  max-width: 900px;
  margin: 3rem auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.accordion-item {
  border: 2px solid rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.accordion-item:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.accordion-header {
  width: 100%;
  padding: 1.5rem 2rem;
  background: linear-gradient(135deg, rgba(115, 3, 167, 0.1), rgba(255, 178, 91, 0.1));
  border: none;
  cursor: pointer;
  font-size: 1.6rem;
  font-weight: 700;
  color: rgb(32, 32, 32);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.3s ease;
  text-align: left;
}

.accordion-header:hover {
  background: linear-gradient(135deg, rgba(115, 3, 167, 0.2), rgba(255, 178, 91, 0.2));
}

.accordion-header.active {
  background: linear-gradient(135deg, rgba(115, 3, 167, 0.3), rgba(255, 178, 91, 0.3));
  color: rgb(115, 3, 167);
}

.accordion-title {
  flex: 1;
  font-family: "Poppins", sans-serif;
}

.accordion-icon {
  font-size: 1.4rem;
  transition: transform 0.3s ease;
  color: rgb(115, 3, 167);
}

.accordion-header.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  padding: 0 2rem;
  transition: all 0.3s ease;
}

.accordion-content.show {
  max-height: 2000px;
  padding: 2rem;
}

.accordion-content h3 {
  color: rgb(27, 27, 27);
  font-size: 1.8rem;
  margin-top: 1.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.accordion-content h3:first-child {
  margin-top: 0;
}

.accordion-content p {
  color: rgb(32, 32, 32);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  font-family: "Nunito";
  font-weight: 600;
  line-height: 1.6;
}

.accordion-content a {
  color: #0066cc;
  text-decoration: none;
  border-bottom: 1px solid #0066cc;
}

.accordion-content a:hover {
  color: rgb(115, 3, 167);
  border-bottom-color: rgb(115, 3, 167);
}

/* Research Accordion Mobile Responsive */
@media screen and (max-width: 600px) {
  .research-accordion {
    margin: 2rem auto;
    gap: 1rem;
  }

  .accordion-header {
    padding: 1.2rem 1.5rem;
    font-size: 1.4rem;
  }

  .accordion-icon {
    font-size: 1.2rem;
  }

  .accordion-content {
    padding: 0 1.5rem;
  }

  .accordion-content.show {
    padding: 1.5rem;
  }

  .accordion-content h3 {
    font-size: 1.5rem;
    margin-top: 1rem;
  }

  .accordion-content p {
    font-size: 1.3rem;
    margin-bottom: 1rem;
  }
}

/* Research section ends */


/* skills section starts */
.skills {
  min-height: 90vh;
  background: linear-gradient(to bottom, #57059e, #4a00e0);
}
.skills h2 {
  color: #fff;
}
.skills .heading span {
  color: rgb(255, 230, 0);
}
.skills .container {
  background: rgba(0, 0, 22, 0.4);
  color: #fff;
  border-radius: 1rem;
  padding: 2rem;
  width: 90%;
  margin: auto;
  margin-top: 2rem;
}
.skills .container .row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  flex-wrap: wrap;
  gap: 1.8rem;
}
.skills .container .bar {
  margin-bottom: 15px;
  padding: 10px;
  border-radius: 1rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  background: rgba(0, 0, 22, 0.9);
  transition: 0.2s;
}
.skills .container .bar:hover {
  box-shadow: 0 8px 10px rgba(0, 2, 68, 0.8) !important;
  background-color: rgba(0, 0, 0, 0.9) !important;
}
.skills .container .bar .info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
}
.skills .container .bar .info i {
  font-size: 4rem;
}
.skills .container .bar .info span {
  font-size: 2rem;
  font-weight: 500;
  font-family: "Poppins";
  margin-left: 0.5rem;
}
/* skills media queries starts*/
@media screen and (max-width: 600px) {
  .skills .container {
    padding: 0;
    margin: 0;
  }
  .skills .container .row {
    grid-template-columns: repeat(2, 1fr);
    margin: 1rem;
    padding: 2rem 0.2rem 2rem 0.2rem;
    gap: 1rem;
  }
  .skills .container {
    margin-top: 5px;
    width: 100%;
  }
}
/* skills media queries ends*/
/* skills section ends */

/* Publications section starts */

.publications {
  min-height: auto;
  background: linear-gradient(135deg, #0a1429 0%, #16213e 50%, #0f172a 100%);
  padding: 4rem 9%;
  position: relative;
  overflow: hidden;
}

.publications::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 20% 50%, rgba(155, 89, 182, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(52, 152, 219, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.publications .heading {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 50%, #00d9ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGlow 3s ease-in-out infinite;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 0 15px rgba(155, 89, 182, 0.4));
}

.publications .heading span {
  color: #00d9ff;
}

/* Publication Category */
.pub-category {
  margin-bottom: 3rem;
  position: relative;
  z-index: 2;
}

.pub-category-title {
  font-size: 2rem;
  color: #e0c3fc;
  font-weight: 700;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 3px solid #9b59b6;
  display: inline-block;
}

/* Publication Item Card */
.publication-item {
  background: rgba(155, 89, 182, 0.08);
  border-radius: 10px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 8px rgba(155, 89, 182, 0.1),
              0 0 20px rgba(155, 89, 182, 0.2),
              inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
  border-left: 5px solid transparent;
  border: 2px solid rgba(155, 89, 182, 0.2);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  animation: cardGlow 2s ease-in-out infinite;
}

@keyframes cardGlow {
  0%, 100% {
    box-shadow: 0 2px 8px rgba(155, 89, 182, 0.1), 
                0 0 20px rgba(155, 89, 182, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.05);
  }
  50% {
    box-shadow: 0 4px 16px rgba(155, 89, 182, 0.15),
                0 0 40px rgba(155, 89, 182, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.05);
  }
}

.publication-item:hover {
  box-shadow: 0 8px 32px rgba(155, 89, 182, 0.3),
              0 0 50px rgba(155, 89, 182, 0.6),
              inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transform: translateY(-6px);
  background: rgba(155, 89, 182, 0.15);
  border-color: rgba(155, 89, 182, 0.5);
}

.publication-item.peer-reviewed {
  border-left-color: #27ae60;
}

.publication-item.preprint {
  border-left-color: #3498db;
}

/* Publication Header */
.pub-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.2rem;
  gap: 1rem;
}

.pub-year {
  background: rgba(155, 89, 182, 0.2);
  color: #00d9ff;
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-weight: 700;
  font-size: 1.3rem;
  white-space: nowrap;
  border: 1px solid rgba(155, 89, 182, 0.4);
}

/* Publication Badges */
.pub-badge {
  padding: 0.5rem 1.2rem;
  border-radius: 20px;
  font-size: 1.1rem;
  font-weight: 600;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.peer-reviewed-badge {
  background-color: rgba(39, 174, 96, 0.25);
  color: #27ae60;
  border: 1px solid #27ae60;
}

.peer-reviewed-badge::before {
  content: "✓";
}

.preprint-badge {
  background-color: rgba(52, 152, 219, 0.25);
  color: #3498db;
  border: 1px solid #3498db;
}

.preprint-badge::before {
  content: "📄";
}

/* Publication Title */
.pub-title {
  font-size: 1.5rem;
  color: #e0c3fc;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.6;
  font-style: italic;
}

/* Publication Authors */
.pub-authors {
  font-size: 1.3rem;
  color: #a8edea;
  margin-bottom: 1rem;
  font-family: "Nunito", sans-serif;
  line-height: 1.5;
}

.pub-authors b {
  color: #00d9ff;
  font-weight: 700;
}

/* Publication Journal Info */
.pub-journal-info {
  margin-bottom: 1.2rem;
}

.pub-journal {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.3rem;
  color: #a8edea;
  font-weight: 600;
}

.pub-journal i {
  color: #9b59b6;
  font-size: 1.2rem;
}

.pub-journal a {
  color: #00d9ff;
  text-decoration: none;
  border-bottom: 2px solid rgba(0, 217, 255, 0.3);
  transition: all 0.2s ease;
}

.pub-journal a:hover {
  color: #a8edea;
  border-bottom-color: rgba(168, 237, 234, 0.6);
}

/* Publication Links */
.pub-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.pub-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 2px solid transparent;
}

.pub-link-btn.arxiv {
  background-color: rgba(214, 88, 0, 0.2);
  color: #ff8c00;
  border-color: #ff8c00;
}

.pub-link-btn.arxiv:hover {
  background-color: #ff8c00;
  color: white;
  box-shadow: 0 0 20px rgba(255, 140, 0, 0.5);
}

.pub-link-btn.doi {
  background-color: rgba(52, 152, 219, 0.2);
  color: #00d9ff;
  border-color: #00d9ff;
}

.pub-link-btn.doi:hover {
  background-color: #00d9ff;
  color: #0a1429;
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
}

.pub-link-btn i {
  font-size: 1rem;
}

/* Publications Responsive */
@media screen and (max-width: 600px) {
  .publications {
    padding: 2rem 5%;
  }

  .pub-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .pub-year,
  .pub-badge {
    font-size: 1rem;
    padding: 0.4rem 0.8rem;
  }

  .pub-title {
    font-size: 1.3rem;
  }

  .pub-authors {
    font-size: 1.2rem;
  }

  .pub-journal {
    font-size: 1.2rem;
  }

  .pub-links {
    gap: 0.8rem;
  }

  .pub-link-btn {
    padding: 0.5rem 1rem;
    font-size: 1rem;
  }

  .publication-item {
    padding: 1.5rem;
  }

  .pub-category-title {
    font-size: 1.6rem;
  }
}

/* Publications section ends */




/* education section starts */
.education {
  background: linear-gradient(135deg, #0a1429 0%, #16213e 50%, #0f172a 100%);
  min-height: auto;
  padding: 4rem 9%;
  position: relative;
  overflow: hidden;
}

.education::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 20% 50%, rgba(155, 89, 182, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(52, 152, 219, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.education .heading {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 2rem;
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 50%, #00d9ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGlow 3s ease-in-out infinite;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 0 15px rgba(155, 89, 182, 0.4));
}

.education .heading span {
  color: #00d9ff;
}

/* Education Quote */
.edu-quote {
  font-size: 1.6rem;
  text-align: center;
  font-family: "Nunito", sans-serif;
  font-weight: 600;
  margin: 2rem 0 4rem 0;
  color: #a8edea;
  font-style: italic;
  position: relative;
  padding: 2rem;
  background: rgba(155, 89, 182, 0.1);
  border-radius: 10px;
  border-left: 5px solid #9b59b6;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(155, 89, 182, 0.3);
}

.edu-quote i {
  color: #00d9ff;
  margin: 0 0.5rem;
  font-size: 1.4rem;
}

/* Education Container */
.edu-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* Timeline line (vertical) */
.edu-container::before {
  content: "";
  position: absolute;
  left: 40px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, #3498db, #9b59b6, #27ae60);
  border-radius: 2px;
  box-shadow: 0 0 20px rgba(155, 89, 182, 0.5);
}

/* Education Card */
.edu-card {
  background: rgba(155, 89, 182, 0.08);
  border-radius: 12px;
  padding: 2.5rem;
  box-shadow: 0 2px 8px rgba(155, 89, 182, 0.1), 
              0 0 20px rgba(155, 89, 182, 0.2),
              inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
  position: relative;
  margin-left: 100px;
  border-top: 5px solid;
  border: 2px solid rgba(155, 89, 182, 0.2);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  animation: cardGlow 2s ease-in-out infinite;
}

.edu-card:hover {
  box-shadow: 0 8px 32px rgba(155, 89, 182, 0.3),
              0 0 50px rgba(155, 89, 182, 0.6),
              inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transform: translateY(-8px);
  background: rgba(155, 89, 182, 0.15);
  border-color: rgba(155, 89, 182, 0.5);
}

/* Card Type Specific Styles */
.edu-card.phd {
  border-top-color: #9b59b6;
}

.edu-card.phd .edu-badge {
  background-color: rgba(155, 89, 182, 0.25);
  color: #9b59b6;
  border-color: #9b59b6;
}

.edu-card.master {
  border-top-color: #3498db;
}

.edu-card.master .edu-badge {
  background-color: rgba(52, 152, 219, 0.25);
  color: #3498db;
  border-color: #3498db;
}

.edu-card.bachelor {
  border-top-color: #27ae60;
}

.edu-card.bachelor .edu-badge {
  background-color: rgba(39, 174, 96, 0.25);
  color: #27ae60;
  border-color: #27ae60;
}

/* Timeline Dot */
.edu-timeline-dot {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  left: -100px;
  top: 30px;
  border: 3px solid white;
  z-index: 10;
}

.phd-dot {
  background-color: #9b59b6;
  box-shadow: 0 0 0 4px rgba(155, 89, 182, 0.3);
}

.master-dot {
  background-color: #3498db;
  box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.3);
}

.bachelor-dot {
  background-color: #27ae60;
  box-shadow: 0 0 0 4px rgba(39, 174, 96, 0.3);
}

/* Badge Wrapper */
.edu-badge-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

/* Badge */
.edu-badge {
  padding: 0.6rem 1.4rem;
  border-radius: 20px;
  font-size: 1.1rem;
  font-weight: 700;
  border: 2px solid;
  display: inline-flex;
  white-space: nowrap;
}

.phd-badge::before {
  content: "🎓 ";
}

.master-badge::before {
  content: "📚 ";
}

.bachelor-badge::before {
  content: "📖 ";
}

/* Icon */
.edu-icon {
  font-size: 2.5rem;
  color: #9b59b6;
  opacity: 0.6;
}

/* Content */
.edu-content {
  position: relative;
}

.edu-degree {
  font-size: 1.8rem;
  color: #e0c3fc;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.edu-specialization {
  font-size: 1.2rem;
  color: #00d9ff;
  font-weight: 600;
  font-style: italic;
  margin-bottom: 1.2rem;
  opacity: 0.9;
}

/* Details */
.edu-details {
  margin: 1.5rem 0;
}

.edu-institution {
  font-size: 1.3rem;
  color: #a8edea;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.edu-institution i {
  color: #9b59b6;
  font-size: 1.2rem;
}

.edu-institution a {
  color: #00d9ff;
  text-decoration: none;
  border-bottom: 2px solid rgba(0, 217, 255, 0.3);
  transition: all 0.2s ease;
}

.edu-institution a:hover {
  color: #a8edea;
  border-bottom-color: rgba(168, 237, 234, 0.6);
}

.edu-meta {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.edu-duration {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.2rem;
  color: #a8edea;
  font-weight: 600;
}

.edu-duration i {
  color: #9b59b6;
}

.edu-status {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.2rem;
  font-weight: 700;
  padding: 0.4rem 1rem;
  border-radius: 20px;
}

.edu-status.completed {
  background-color: rgba(39, 174, 96, 0.25);
  color: #27ae60;
}

.edu-status i {
  font-size: 1.3rem;
}

/* Highlights */
.edu-highlights {
  margin-top: 1.5rem;
  padding: 1.2rem;
  background: linear-gradient(135deg, rgba(155, 89, 182, 0.1), rgba(52, 152, 219, 0.1));
  border-radius: 8px;
  border-left: 4px solid #9b59b6;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.edu-highlights p {
  font-size: 1.1rem;
  color: #a8edea;
  margin: 0;
  line-height: 1.6;
}

.edu-highlights strong {
  color: #00d9ff;
  font-weight: 700;
}

/* Education Responsive */
@media screen and (max-width: 768px) {
  .education {
    padding: 2rem 5%;
  }

  .edu-quote {
    font-size: 1.4rem;
    padding: 1.5rem;
    margin: 1.5rem 0 2rem 0;
  }

  .edu-container::before {
    left: 20px;
  }

  .edu-card {
    margin-left: 60px;
    padding: 2rem;
  }

  .edu-timeline-dot {
    left: -60px;
  }

  .edu-degree {
    font-size: 1.5rem;
  }

  .edu-specialization {
    font-size: 1.1rem;
  }

  .edu-institution {
    font-size: 1.2rem;
  }

  .edu-meta {
    gap: 1rem;
    flex-direction: column;
  }
}

@media screen and (max-width: 600px) {
  .education {
    padding: 1.5rem 4%;
  }

  .edu-quote {
    font-size: 1.2rem;
    padding: 1.2rem;
  }

  .edu-quote i {
    font-size: 1.2rem;
  }

  .edu-container::before {
    left: 15px;
  }

  .edu-card {
    margin-left: 50px;
    padding: 1.5rem;
  }

  .edu-timeline-dot {
    left: -50px;
    width: 16px;
    height: 16px;
  }

  .edu-badge-wrapper {
    flex-direction: column;
    align-items: flex-start;
  }

  .edu-badge {
    font-size: 1rem;
    padding: 0.5rem 1rem;
  }

  .edu-icon {
    font-size: 2rem;
  }

  .edu-degree {
    font-size: 1.3rem;
  }

  .edu-specialization {
    font-size: 1rem;
  }

  .edu-institution {
    font-size: 1.1rem;
  }

  .edu-highlights p {
    font-size: 1rem;
  }
}

/* education section ends */

/* work section starts */
.work {
  /* background: #010124; */
  background: linear-gradient(to bottom, #000031, #00002c);
}
.work h2 {
  color: #fff;
  padding: 1rem;
}
.work .heading span {
  color: rgb(255, 230, 0);
}
.work .box-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 2rem;
}
.work .box-container .box {
  flex: 1 1 30rem;
  border-radius: 0.5rem;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
  height: 30rem;
}
.work .box-container .box img {
  height: 100%;
  width: 100%;
  object-fit: cover;
}
.work .box-container .box .content {
  height: 100%;
  width: 100%;
  position: absolute;
  top: 85%;
  left: 0;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  flex-direction: column;
}
.work .box-container .box .content .tag {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  height: 4.5rem;
  width: 100%;
  padding-left: 1rem;
  background: #ffd900;
}
.work .box-container .box .content .tag h3 {
  font-size: 2rem;
}
.work .box-container .box:hover .content {
  top: 25%;
}
.work .desc {
  margin: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.work .desc p {
  font-size: 1.5rem;
}
.work .desc .btns {
  display: flex;
  justify-content: space-between;
  width: 100%;
  margin-top: 2rem;
}
.work .desc .btns .btn {
  line-height: 0;
  display: inline;
  padding: 1.5rem 2.5rem;
  border-radius: 0.5rem;
  font-size: 1.5rem;
  color: #fff;
  background: rgb(12, 12, 12);
  margin-right: 2rem;
}
.work .desc .btns .btn:hover {
  background: #310ae0f5;
}
.work .viewall {
  display: flex;
  justify-content: center;
}
.work .viewall .btn {
  position: relative;
  line-height: 0;
  padding: 1.6rem 3rem;
  border-radius: 0.5em;
  transition: 0.5s;
  color: rgb(255, 255, 255);
  font-weight: 700;
  border: 2px solid #fff;
  box-shadow: 0px 5px 10px rgba(65, 84, 241, 0.4);
  text-align: center;
}
.work .viewall .btn span {
  font-weight: 600;
  font-size: 1.7rem;
  font-family: "Nunito", sans-serif;
}
.work .viewall .btn i {
  margin-left: 0.3rem;
  font-size: 1.5rem;
  transition: 0.3s;
}
.work .viewall .btn:hover {
  background: #fff;
  color: #000;
}
.work .viewall .btn:hover i {
  transform: translateX(5px);
}
/* work section ends */

/* experience section starts */
.experience {
  background: linear-gradient(135deg, #0a1429 0%, #16213e 50%, #0f172a 100%);
  min-height: auto;
  padding: 4rem 9%;
  position: relative;
  overflow: hidden;
}

.experience::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 20% 50%, rgba(155, 89, 182, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(52, 152, 219, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.experience .heading {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 50%, #00d9ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGlow 3s ease-in-out infinite;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 0 15px rgba(155, 89, 182, 0.4));
}

.experience .heading span {
  color: #00d9ff;
}

/* Experience Timeline Container */
.exp-timeline {
  max-width: 900px;
  margin: 3rem auto;
  position: relative;
  z-index: 2;
}

/* Vertical timeline line */
.exp-timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: calc(100% - 4rem);
  background: linear-gradient(to bottom, #9b59b6, #3498db, #27ae60);
  box-shadow: 0 0 20px rgba(155, 89, 182, 0.5);
}

/* Experience Item */
.exp-item {
  margin-bottom: 3rem;
  position: relative;
}

.exp-item:nth-child(odd) {
  text-align: right;
}

.exp-item:nth-child(odd) .exp-card {
  margin-right: 52%;
}

.exp-item:nth-child(even) .exp-card {
  margin-left: 52%;
}

/* Timeline Marker/Dot */
.exp-marker {
  position: absolute;
  width: 24px;
  height: 24px;
  left: 50%;
  top: 30px;
  transform: translateX(-50%);
  border-radius: 50%;
  border: 4px solid rgba(10, 20, 41, 0.8);
  z-index: 10;
  background: #0a1429;
}

.exp-marker.current {
  background: linear-gradient(135deg, #9b59b6, #e74c3c);
  box-shadow: 0 0 0 8px rgba(155, 89, 182, 0.4), 0 0 0 16px rgba(231, 76, 60, 0.2);
  animation: pulse 2s infinite;
  border-color: #e74c3c;
}

.exp-marker.postdoc {
  background: #9b59b6;
  box-shadow: 0 0 0 6px rgba(155, 89, 182, 0.3);
}

.exp-marker.visiting {
  background: #3498db;
  box-shadow: 0 0 0 6px rgba(52, 152, 219, 0.3);
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 8px rgba(155, 89, 182, 0.2), 0 0 0 16px rgba(231, 76, 60, 0.1);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(155, 89, 182, 0.3), 0 0 0 24px rgba(231, 76, 60, 0);
  }
  100% {
    box-shadow: 0 0 0 8px rgba(155, 89, 182, 0.2), 0 0 0 16px rgba(231, 76, 60, 0.1);
  }
}

/* Experience Card */
.exp-card {
  background: rgba(155, 89, 182, 0.08);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 2px 8px rgba(155, 89, 182, 0.1),
              0 0 20px rgba(155, 89, 182, 0.2),
              inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
  border-top: 5px solid;
  position: relative;
  border: 2px solid rgba(155, 89, 182, 0.2);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  animation: cardGlow 2s ease-in-out infinite;
}

.exp-card:hover {
  box-shadow: 0 8px 32px rgba(155, 89, 182, 0.3),
              0 0 50px rgba(155, 89, 182, 0.6),
              inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transform: translateY(-10px);
  background: rgba(155, 89, 182, 0.15);
  border-color: rgba(155, 89, 182, 0.5);
}

.postdoc-card {
  border-top-color: #9b59b6;
}

.visiting-card {
  border-top-color: #3498db;
}

/* Card Header */
.exp-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

/* Experience Badge */
.exp-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.4rem;
  border-radius: 20px;
  font-size: 1.1rem;
  font-weight: 700;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.postdoc-badge {
  background: rgba(155, 89, 182, 0.25);
  color: #9b59b6;
  border: 2px solid #9b59b6;
}

.visiting-badge {
  background: rgba(52, 152, 219, 0.25);
  color: #3498db;
  border: 2px solid #3498db;
}

/* Status Badge */
.exp-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: 20px;
  font-size: 1rem;
  font-weight: 700;
}

.current-status {
  background: rgba(231, 76, 60, 0.25);
  color: #e74c3c;
}

.current-status i {
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50%, 100% {
    opacity: 1;
  }
  25%, 75% {
    opacity: 0.5;
  }
}

.past-status {
  background: rgba(39, 174, 96, 0.25);
  color: #27ae60;
}

/* Position Title */
.exp-position {
  font-size: 1.8rem;
  color: #e0c3fc;
  font-weight: 700;
  margin-bottom: 1.2rem;
}

/* Details */
.exp-details {
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.exp-institution,
.exp-location,
.exp-duration {
  font-size: 1.2rem;
  color: #a8edea;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin: 0;
}

.exp-institution i,
.exp-location i,
.exp-duration i {
  color: #9b59b6;
  font-size: 1.1rem;
  min-width: 1.2rem;
}

.exp-institution a {
  color: #00d9ff;
  text-decoration: none;
  font-weight: 600;
  border-bottom: 2px solid rgba(0, 217, 255, 0.3);
  transition: all 0.2s ease;
}

.exp-institution a:hover {
  color: #a8edea;
  border-bottom-color: rgba(168, 237, 234, 0.6);
}

/* Description */
.exp-description {
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(155, 89, 182, 0.3);
}

.exp-description p {
  font-size: 1.1rem;
  color: #a8edea;
  line-height: 1.6;
  margin: 0;
  font-family: "Nunito", sans-serif;
  text-transform: none;
}

/* More Button */
.exp-morebtn {
  display: flex;
  justify-content: center;
  margin-top: 3rem;
}

.exp-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.2rem 2.5rem;
  border-radius: 50px;
  background: linear-gradient(135deg, #9b59b6, #e74c3c);
  color: white;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.2rem;
  box-shadow: 0 6px 20px rgba(155, 89, 182, 0.4);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.exp-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(155, 89, 182, 0.5);
}

.exp-btn i {
  transition: transform 0.3s ease;
}

.exp-btn:hover i {
  transform: translateX(5px);
}

/* Experience Responsive */
@media screen and (max-width: 768px) {
  .experience {
    padding: 2rem 5%;
  }

  .exp-timeline::before {
    left: 20px;
  }

  .exp-item {
    text-align: left !important;
  }

  .exp-item:nth-child(odd) .exp-card,
  .exp-item:nth-child(even) .exp-card {
    margin-left: 70px;
    margin-right: 0;
  }

  .exp-marker {
    left: 20px;
  }

  .exp-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .exp-badge {
    font-size: 1rem;
  }

  .exp-position {
    font-size: 1.5rem;
  }

  .exp-card {
    padding: 1.5rem;
  }
}

@media screen and (max-width: 600px) {
  .experience {
    padding: 1.5rem 4%;
  }

  .exp-timeline::before {
    left: 15px;
  }

  .exp-item:nth-child(odd) .exp-card,
  .exp-item:nth-child(even) .exp-card {
    margin-left: 60px;
  }

  .exp-marker {
    left: 15px;
    width: 20px;
    height: 20px;
  }

  .exp-badge {
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
  }

  .exp-position {
    font-size: 1.3rem;
  }

  .exp-details {
    gap: 0.6rem;
  }

  .exp-institution,
  .exp-location,
  .exp-duration {
    font-size: 1.1rem;
  }

  .exp-btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
  }

  .exp-card {
    padding: 1.2rem;
  }
}

/* experience section ends */

/* contact section starts */
.contact {
  background: linear-gradient(135deg, #0a1429 0%, #16213e 50%, #0f172a 100%);
  min-height: 60vh;
  position: relative;
  overflow: hidden;
}

.contact .heading {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 50%, #00d9ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGlow 3s ease-in-out infinite;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 0 15px rgba(155, 89, 182, 0.4));
}

.contact .heading span {
  color: #00d9ff;
}

.contact::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 20% 50%, rgba(155, 89, 182, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(52, 152, 219, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.contact .container {
  max-width: 1050px;
  width: 100%;
  background: rgba(155, 89, 182, 0.08);
  border-radius: 1.5rem;
  margin: 2rem 5rem;
  box-shadow: 0 0 40px rgba(155, 89, 182, 0.3);
  border: 2px solid rgba(155, 89, 182, 0.2);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  animation: cardGlow 2s ease-in-out infinite;
  position: relative;
  z-index: 2;
}
.contact .container .content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2.5rem 2rem;
}
.contact .content .image-box {
  max-width: 60%;
  margin-left: 4rem;
}
.contact .content .image-box img {
  width: 100%;
  height: 40rem;
  position: relative;
  border-radius: 10px;
  box-shadow: 0 0 40px rgba(155, 89, 182, 0.5);
}
.contact .content form {
  width: 45%;
  margin-right: 3.5rem;
}
form .form-group {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.form-group .field {
  height: 50px;
  display: flex;
  position: relative;
  margin: 1rem;
  width: 100%;
}
form i {
  position: absolute;
  top: 50%;
  left: 18px;
  color: #9b59b6;
  font-size: 17px;
  pointer-events: none;
  transform: translateY(-50%);
  transition: all 0.3s ease;
}

form .field input,
form .message textarea {
  width: 100%;
  height: 100%;
  outline: none;
  padding: 0 16px 0 48px;
  font-size: 16px;
  font-family: "Poppins", sans-serif;
  border-radius: 5px;
  border: 2px solid rgba(155, 89, 182, 0.3);
  background: rgba(155, 89, 182, 0.05);
  color: #a8edea;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.field input::placeholder,
.message textarea::placeholder {
  color: #a8edea;
  font-weight: 500;
  opacity: 0.9;
}

.field input:focus,
.message textarea:focus {
  padding-left: 47px;
  border: 2px solid #00d9ff;
  background: rgba(155, 89, 182, 0.1);
  box-shadow: 0 0 15px rgba(0, 217, 255, 0.4);
}

.field input:focus ~ i,
.message textarea:focus ~ i {
  color: #00d9ff;
}

/* Form Validation Feedback */
.field input.success,
.message textarea.success {
  border: 2px solid #27ae60;
  background: rgba(39, 174, 96, 0.08);
  box-shadow: 0 0 12px rgba(39, 174, 96, 0.3);
}

.field input.success ~ i,
.message textarea.success ~ i {
  color: #27ae60;
}

.field input.error,
.message textarea.error {
  border: 2px solid #e74c3c;
  background: rgba(231, 76, 60, 0.08);
  box-shadow: 0 0 12px rgba(231, 76, 60, 0.3);
}

.field input.error ~ i,
.message textarea.error ~ i {
  color: #e74c3c;
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}
form .message {
  position: relative;
  margin: 1rem;
  width: 100%;
}
form .message i {
  top: 25px;
  font-size: 20px;
  left: 15px;
}
form .message textarea {
  min-height: 130px;
  max-height: 230px;
  max-width: 100%;
  min-width: 100%;
  padding: 12px 20px 0 48px;
}
form .message textarea::-webkit-scrollbar {
  width: 0px;
}
form .button-area {
  display: flex;
  float: right;
  flex-direction: row-reverse;
}
.button-area button {
  color: #fff;
  border: none;
  outline: none;
  font-size: 1.8rem;
  cursor: pointer;
  border-radius: 50px;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, #9b59b6 0%, #e74c3c 100%);
  box-shadow: 0px 8px 25px rgba(155, 89, 182, 0.6), 0 0 20px rgba(231, 76, 60, 0.4);
  transition: all 0.3s ease;
  font-family: "Nunito", sans-serif;
  animation: btnGlow 2s ease-in-out infinite;
}

.button-area button:hover {
  background: linear-gradient(135deg, #9b59b6 0%, #e74c3c 100%);
  box-shadow: 0px 12px 35px rgba(155, 89, 182, 0.8), 0 0 30px rgba(231, 76, 60, 0.6);
  transform: translateY(-2px);
}

.button-area span {
  font-size: 17px;
  padding: 1rem;
  display: none;
  color: #a8edea;
}

.button-area button i {
  position: relative;
  top: 2px;
  left: 2px;
  font-size: 1.5rem;
  transition: 0.3s;
  color: #fff;
}

.button-area button:hover i {
  left: 8px;
}
/* contact section media queries starts */
@media (max-width: 900px) {
  .contact {
    min-height: 70vh;
  }
  .contact .container {
    margin: 3rem 0 2rem 0;
  }
  .contact .container .content {
    padding: 18px 12px;
  }
  .contact .content .image-box {
    display: none;
  }
  .contact .content form {
    width: 100%;
    margin-right: 2rem;
  }
}
/* contact section media queries ends */
/* contact section ends */

/* footer section starts */
.footer {
  min-height: auto;
  padding-top: 0;
  background: linear-gradient(135deg, #0a1429 0%, #16213e 50%, #0f172a 100%);
  position: relative;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 20% 50%, rgba(155, 89, 182, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.footer .box-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.footer .box-container .box {
  flex: 1 1 25rem;
  margin: 2.5rem;
}
.footer .box-container .box h3 {
  font-size: 2.5rem;
  color: #e0c3fc;
  padding-bottom: 1rem;
  font-weight: normal;
}
.footer .box-container .box p {
  font-size: 1.5rem;
  color: #a8edea;
  padding: 0.7rem 0;
  text-transform: none;
}
.footer .box-container .box p i {
  padding-right: 1rem;
  color: #00d9ff;
}
.footer .box-container .box a {
  font-size: 1.5rem;
  color: #a8edea;
  padding: 0.3rem 0;
  display: block;
  transition: all 0.3s ease;
}
.footer .box-container .box a:hover {
  color: #00d9ff;
  text-shadow: 0 0 10px rgba(0, 217, 255, 0.6);
}
.footer .box-container .box .share {
  display: flex;
  flex-wrap: wrap;
  padding: 1rem 0;
}
.footer .box-container .box .share a {
  height: 4rem;
  width: 4rem;
  padding: 1rem;
  text-align: center;
  border-radius: 50%;
  font-size: 1.7rem;
  margin-right: 1rem;
  transition: all 0.3s ease;
  background: rgba(155, 89, 182, 0.2);
  color: #00d9ff;
  border: 2px solid rgba(155, 89, 182, 0.4);
}
.footer .box-container .box .share a:hover {
  background: rgba(155, 89, 182, 0.4);
  transform: scale(1.1);
  border-color: #00d9ff;
  box-shadow: 0 0 20px rgba(155, 89, 182, 0.6);
  color: #a8edea;
}
.footer .credit {
  padding: 1rem 0 0 0;
  text-align: center;
  font-size: 1.5rem;
  font-family: "Nunito", sans-serif;
  font-weight: 600;
  color: #a8edea;
  border-top: 0.1rem solid rgba(155, 89, 182, 0.3);
  position: relative;
  z-index: 1;
}
.footer .credit a {
  color: #00d9ff;
  text-decoration: none;
  transition: all 0.3s ease;
}

.footer .credit a:hover {
  text-shadow: 0 0 10px rgba(0, 217, 255, 0.6);
}
.footer .fa {
  color: #e90606;
  margin: 0 0.3rem;
  font-size: 1.5rem;
  animation: pound 0.35s infinite alternate;
}
@-webkit-keyframes pound {
  to {
    transform: scale(1.1);
  }
}
@keyframes pound {
  to {
    transform: scale(1.1);
  }
}
@media (max-width: 450px) {
  .footer .box-container .box {
    margin: 1.5rem;
  }
  .footer .box-container .box p {
    padding: 0.7rem;
  }
  .footer .box-container .box .share a {
    padding: 1.2rem;
  }
}
/* footer section ends */

/* Enhanced Scroll Reveal Animations */
@keyframes slideUpReveal {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

@keyframes fadeInScaleReveal {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Enhanced Shadow Animation */
@keyframes shadowPulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(155, 89, 182, 0.4);
  }
  50% {
    box-shadow: 0 0 40px rgba(155, 89, 182, 0.7);
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus Styles for Accessibility */
:focus-visible {
  outline: 2px solid var(--color-cyan-bright);
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-cyan-bright);
  outline-offset: 2px;
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
}

/* Scroll Reveal Class - Applied via JavaScript or CSS */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-smooth), transform 0.6s var(--ease-smooth);
}

.scroll-reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Enhanced Card Depth System */
.card-depth-1 {
  box-shadow: var(--shadow-sm);
}

.card-depth-2 {
  box-shadow: var(--shadow-md);
}

.card-depth-3 {
  box-shadow: var(--shadow-lg);
}

.card-hover {
  transition: all 0.3s var(--ease-smooth);
}

.card-hover:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow);
}

/* Enhanced Gradient Text with Shadow */
.gradient-text-enhanced {
  background: var(--color-gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(155, 89, 182, 0.3);
  filter: drop-shadow(0 0 10px rgba(155, 89, 182, 0.3));
}

/* common media queries starts*/
@media (max-width: 450px) {
  html {
    font-size: 55%;
  }
  body {
    padding-right: 0;
  }
  section {
    padding: 2rem;
  }
}
/* common media queries ends*/

/* scroll top starts */
#scroll-top {
  position: fixed;
  top: -140%;
  right: 2rem;
  padding: 1rem 1.5rem;
  font-size: 2rem;
  background: linear-gradient(135deg, #9b59b6 0%, #e74c3c 100%);
  color: #fff;
  border-radius: 50%;
  transition: 1s linear;
  z-index: 1000;
  box-shadow: 0 0 20px rgba(155, 89, 182, 0.6);
}
#scroll-top.active {
  top: calc(100% - 12rem);
}
#scroll-top:hover {
  box-shadow: 0 0 30px rgba(155, 89, 182, 0.8);
}
/* Light Mode Toggle Button */
#theme-toggle {
  position: fixed;
  top: 8rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid rgba(155, 89, 182, 0.4);
  background: rgba(155, 89, 182, 0.1);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #a8edea;
  transition: all 0.3s ease;
  z-index: 500;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

#theme-toggle:hover {
  background: rgba(155, 89, 182, 0.2);
  box-shadow: 0 0 20px rgba(155, 89, 182, 0.4);
  transform: scale(1.1);
  color: #00d9ff;
}

#theme-toggle:focus-visible {
  outline: 2px solid #00d9ff;
  outline-offset: 2px;
}

/* Light Mode Styles */
body.light-mode {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 50%, #f5f7fa 100%);
  color: #1a202c;
}

body.light-mode header {
  background-color: #ffffff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  border-bottom: 2px solid #e2e8f0;
}

body.light-mode header .logo {
  color: #5a3fb5;
}

body.light-mode header .logo:hover {
  color: #0891b2;
  text-shadow: 0 0 8px rgba(8, 145, 178, 0.3);
}

body.light-mode header .navbar ul li a {
  color: #2d3748;
  font-weight: 600;
}

body.light-mode header .navbar ul li a.active,
body.light-mode header .navbar ul li a:hover {
  color: #0891b2;
  border-bottom-color: #0891b2;
  text-shadow: 0 0 8px rgba(8, 145, 178, 0.3);
}

body.light-mode #menu {
  color: #2d3748;
}

body.light-mode #menu:hover {
  color: #0891b2;
}

body.light-mode header .navbar {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
}

body.light-mode .heading {
  color: #2d3748;
}

body.light-mode .heading span {
  background: linear-gradient(135deg, #5a3fb5 0%, #0891b2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

body.light-mode .about .heading,
body.light-mode .research .heading,
body.light-mode .publications .heading,
body.light-mode .education .heading,
body.light-mode .experience .heading,
body.light-mode .contact .heading {
  background: linear-gradient(135deg, #5a3fb5 0%, #0891b2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 8px rgba(90, 63, 181, 0.2));
}

body.light-mode .about .heading i {
  color: #5a3fb5;
}

body.light-mode section {
  color: #2d3748;
}

body.light-mode .btn {
  background: linear-gradient(135deg, #5a3fb5 0%, #0891b2 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(90, 63, 181, 0.2);
}

body.light-mode .btn:hover {
  box-shadow: 0 6px 20px rgba(90, 63, 181, 0.3);
}

body.light-mode .edu-card,
body.light-mode .exp-card,
body.light-mode .publication-item {
  background: #ffffff;
  border: 2px solid #cbd5e1;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

body.light-mode .edu-card:hover,
body.light-mode .exp-card:hover,
body.light-mode .publication-item:hover {
  background: #f8fafc;
  border: 2px solid #5a3fb5;
  box-shadow: 0 8px 20px rgba(90, 63, 181, 0.15);
  transform: translateY(-6px);
}

/* readable text on the white cards in light mode */
body.light-mode .edu-degree {
  color: #2d3748;
}

body.light-mode .edu-specialization {
  color: #0891b2;
}

body.light-mode .edu-duration {
  color: #4a5568;
}

body.light-mode .edu-highlights p {
  color: #4a5568;
}

body.light-mode .edu-institution a {
  color: #0891b2;
  border-bottom-color: rgba(8, 145, 178, 0.3);
}

body.light-mode .edu-institution a:hover {
  color: #5a3fb5;
  border-bottom-color: rgba(90, 63, 181, 0.6);
}

body.light-mode .pub-title {
  color: #2d3748;
}

body.light-mode .pub-authors {
  color: #4a5568;
}

body.light-mode .pub-authors b {
  color: #5a3fb5;
}

body.light-mode .pub-journal a {
  color: #0891b2;
}

body.light-mode .pub-journal a:hover {
  color: #5a3fb5;
}

body.light-mode .pub-category-title {
  color: #5a3fb5;
}

body.light-mode .exp-position {
  color: #2d3748;
}

body.light-mode .exp-institution,
body.light-mode .exp-location,
body.light-mode .exp-duration {
  color: #4a5568;
}

body.light-mode .exp-institution a {
  color: #0891b2;
}

body.light-mode .exp-institution a:hover {
  color: #5a3fb5;
}

body.light-mode .exp-description p {
  color: #4a5568;
}

body.light-mode .contact .container {
  background: #ffffff;
  border: 2px solid #cbd5e1;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

body.light-mode form .field input,
body.light-mode form .message textarea {
  background: #f8f9fa;
  border: 2px solid #cbd5e1;
  color: #2d3748;
}

body.light-mode form .field input::placeholder,
body.light-mode form .message textarea::placeholder {
  color: #5a3fb5;
  opacity: 0.8;
}

body.light-mode form .field input:focus,
body.light-mode form .message textarea:focus {
  border: 2px solid #0891b2;
  background: #ffffff;
  box-shadow: 0 0 12px rgba(8, 145, 178, 0.2);
}

body.light-mode form i {
  color: #5a3fb5;
}

body.light-mode form .field input:focus ~ i,
body.light-mode form .message textarea:focus ~ i {
  color: #0891b2;
}

body.light-mode .button-area button {
  background: linear-gradient(135deg, #5a3fb5 0%, #e74c3c 100%);
  box-shadow: 0px 6px 20px rgba(90, 63, 181, 0.2);
}

body.light-mode .button-area button:hover {
  box-shadow: 0px 10px 30px rgba(90, 63, 181, 0.3);
}

body.light-mode .footer {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 50%, #f5f7fa 100%);
  border-top: 2px solid #e2e8f0;
}

body.light-mode .footer .box-container .box h3 {
  color: #5a3fb5;
}

body.light-mode .footer .box-container .box p,
body.light-mode .footer .box-container .box a {
  color: #2d3748;
}

body.light-mode .footer .box-container .box p i,
body.light-mode .footer .box-container .box a:hover {
  color: #0891b2;
}

body.light-mode .footer .box-container .box .share a {
  background: #f0f4f8;
  color: #0891b2;
  border: 2px solid #cbd5e1;
}

body.light-mode .footer .box-container .box .share a:hover {
  background: #e0eef6;
  border-color: #0891b2;
  box-shadow: 0 0 15px rgba(8, 145, 178, 0.2);
  color: #5a3fb5;
}

body.light-mode .footer .credit {
  color: #2d3748;
  border-top: 2px solid #e2e8f0;
}

body.light-mode .footer .credit a {
  color: #0891b2;
}

body.light-mode #scroll-top {
  background: linear-gradient(135deg, #5a3fb5 0%, #e74c3c 100%);
  color: #fff;
  box-shadow: 0 0 15px rgba(90, 63, 181, 0.3);
}

body.light-mode #scroll-top:hover {
  box-shadow: 0 0 25px rgba(90, 63, 181, 0.4);
}

body.light-mode html::-webkit-scrollbar-track {
  background: #f8f9fa;
}

body.light-mode html::-webkit-scrollbar-thumb {
  background: #5a3fb5;
}

body.light-mode html::-webkit-scrollbar-thumb:hover {
  background: #0891b2;
}

/* Light Mode for Success/Error States */
body.light-mode form .field input.success,
body.light-mode form .message textarea.success {
  border-color: #27ae60;
  box-shadow: 0 0 10px rgba(39, 174, 96, 0.2);
}

body.light-mode form .field input.error,
body.light-mode form .message textarea.error {
  border-color: #e74c3c;
  box-shadow: 0 0 10px rgba(231, 76, 60, 0.2);
}

body.light-mode #theme-toggle {
  background: #f0f4f8;
  border: 2px solid #cbd5e1;
  color: #5a3fb5;
}

body.light-mode #theme-toggle:hover {
  background: #e0eef6;
  box-shadow: 0 0 15px rgba(90, 63, 181, 0.2);
  color: #0891b2;
  border-color: #0891b2;
}

/* ============================================================
   Hero action row + "Listen to a black hole merger" button
   ============================================================ */
.home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.6rem;
  margin-top: 3.5rem;
  position: relative;
  z-index: 2;
}

/* the About Me button is absolute by default — make it flow inside the row */
.home .hero-actions .btn {
  position: relative;
  margin-top: 0;
}

.gw-listen-btn {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 2rem 1.15rem 1.15rem;
  border-radius: 50px;
  cursor: pointer;
  font-family: "Nunito", sans-serif;
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: 0.03rem;
  color: #a8edea;
  background: rgba(10, 20, 41, 0.55);
  border: 2px solid rgba(0, 217, 255, 0.45);
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.12),
              inset 0 0 20px rgba(0, 217, 255, 0.05);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: color 0.35s ease, border-color 0.35s ease,
              box-shadow 0.35s ease, transform 0.35s ease;
  /* dance in the same rhythm as the other hero buttons */
  animation: wobble 0.7s ease-in-out infinite;
}

.gw-listen-btn:hover {
  color: #fff;
  border-color: rgba(0, 217, 255, 0.9);
  box-shadow: 0 0 28px rgba(0, 217, 255, 0.45);
  transform: translateY(-3px);
}

.gw-listen-btn:focus-visible {
  outline: 2px solid #00d9ff;
  outline-offset: 3px;
}

.gw-listen-btn.playing {
  color: #fff;
  border-color: rgba(0, 217, 255, 0.9);
  box-shadow: 0 0 28px rgba(0, 217, 255, 0.4);
}

.gw-listen-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.4rem;
  height: 3.4rem;
  border-radius: 50%;
  flex-shrink: 0;
  font-size: 1.4rem;
  color: #05070e;
  background: linear-gradient(135deg, #00d9ff 0%, #9b59b6 100%);
}

.gw-listen-icon i { line-height: 1; }

.gw-listen-label { position: relative; z-index: 1; }

/* animated equalizer, shown only while playing */
.gw-listen-eq {
  display: none;
  align-items: flex-end;
  gap: 0.3rem;
  height: 1.8rem;
}

.gw-listen-btn.playing .gw-listen-eq { display: inline-flex; }

.gw-listen-eq i {
  width: 0.35rem;
  border-radius: 2px;
  transform-origin: bottom;
  background: linear-gradient(to top, #00d9ff, #c89bf6);
  animation: gwEq 0.9s ease-in-out infinite;
}

.gw-listen-eq i:nth-child(1) { height: 45%; animation-delay: 0s; }
.gw-listen-eq i:nth-child(2) { height: 85%; animation-delay: 0.15s; }
.gw-listen-eq i:nth-child(3) { height: 60%; animation-delay: 0.3s; }
.gw-listen-eq i:nth-child(4) { height: 95%; animation-delay: 0.45s; }

@keyframes gwEq {
  0%, 100% { transform: scaleY(0.35); }
  50%      { transform: scaleY(1); }
}

@media (prefers-reduced-motion: reduce) {
  .gw-listen-eq i { animation: none; }
  .gw-listen-btn { animation: none; }
  .gw-listen-btn:hover { transform: none; }
}

/* light-mode variant */
body.light-mode .gw-listen-btn {
  color: #0e7490;
  background: rgba(255, 255, 255, 0.65);
  border-color: rgba(8, 145, 178, 0.5);
  box-shadow: 0 0 18px rgba(8, 145, 178, 0.12);
}

body.light-mode .gw-listen-btn:hover,
body.light-mode .gw-listen-btn.playing {
  color: #0891b2;
  border-color: rgba(8, 145, 178, 0.9);
  box-shadow: 0 0 24px rgba(8, 145, 178, 0.35);
}

/* attribution for the GW150914 audio — hidden until the clip is playing */
.gw-audio-credit {
  position: relative;
  z-index: 2;
  margin-top: 0;
  max-width: 42rem;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
  transform: translateY(-4px);
  font-family: "Nunito", sans-serif;
  font-size: 1.2rem;
  line-height: 1.5;
  color: rgba(168, 237, 234, 0.6);
  transition: max-height 0.5s ease, opacity 0.4s ease,
              margin-top 0.4s ease, transform 0.4s ease;
}

.gw-audio-credit.is-visible {
  margin-top: 1.2rem;
  max-height: 8rem;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

@media (prefers-reduced-motion: reduce) {
  .gw-audio-credit { transition: opacity 0.3s ease; }
}

.gw-audio-credit i {
  margin-right: 0.4rem;
  color: rgba(0, 217, 255, 0.7);
}

.gw-audio-credit a {
  color: rgba(0, 217, 255, 0.85);
  text-decoration: none;
  border-bottom: 1px dotted rgba(0, 217, 255, 0.4);
  transition: color 0.3s ease;
}

.gw-audio-credit a:hover { color: #00d9ff; }

/* the hero keeps its dark background in light mode, so the credit stays light */
body.light-mode .gw-audio-credit { color: rgba(168, 237, 234, 0.75); }
body.light-mode .gw-audio-credit i { color: rgba(0, 217, 255, 0.7); }
body.light-mode .gw-audio-credit a {
  color: rgba(0, 217, 255, 0.85);
  border-bottom-color: rgba(0, 217, 255, 0.4);
}
body.light-mode .gw-audio-credit a:hover { color: #00d9ff; }