/* ================================================================
   MODERN PREMIUM PORTFOLIO CSS
   Physics Researcher Portfolio - Enhanced Version
   ================================================================ */

/* ── Google Fonts ───────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── CSS Custom Properties ──────────────────────────────────────── */
:root {
  /* Color Palette */
  --clr-bg-deep:     #020010;
  --clr-bg-dark:     #060020;
  --clr-bg-mid:      #0a0035;
  --clr-accent-1:    #6C63FF;
  --clr-accent-2:    #FF6B6B;
  --clr-accent-3:    #FFD93D;
  --clr-accent-4:    #4ECDC4;
  --clr-orange:      #FF7B2B;
  --clr-white:       #FFFFFF;
  --clr-text-main:   #E8E8F0;
  --clr-text-muted:  #9494B8;
  --clr-glass-bg:    rgba(255,255,255,0.05);
  --clr-glass-border:rgba(255,255,255,0.12);
  --clr-glass-hover: rgba(255,255,255,0.10);

  /* Gradients */
  --grad-hero:   linear-gradient(135deg, #020010 0%, #0a0035 50%, #070025 100%);
  --grad-accent: linear-gradient(135deg, var(--clr-accent-1), var(--clr-accent-2));
  --grad-orange: linear-gradient(135deg, var(--clr-orange), #FF4757);
  --grad-teal:   linear-gradient(135deg, var(--clr-accent-4), var(--clr-accent-1));

  /* Spacing */
  --section-pad: clamp(40px, 5vw, 68px);
  --container-max: 1200px;

  /* Typography */
  --font-main:  'Inter', sans-serif;
  --font-head:  'Space Grotesk', sans-serif;
  --font-mono:  'JetBrains Mono', monospace;

  /* Shadows */
  --shadow-glow-purple: 0 0 40px rgba(108,99,255,0.3);
  --shadow-glow-orange: 0 0 40px rgba(255,123,43,0.3);
  --shadow-card:        0 20px 60px rgba(0,0,0,0.4);

  /* Transitions */
  --ease-smooth:  cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --dur-fast:  0.2s;
  --dur-mid:   0.4s;
  --dur-slow:  0.7s;
}

/* ── Reset & Base ───────────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-user-select: none !important;
  -moz-user-select: none !important;
  -ms-user-select: none !important;
  user-select: none !important;
  -webkit-touch-callout: none !important;
}

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

html::-webkit-scrollbar { width: 6px; }
html::-webkit-scrollbar-track { background: var(--clr-bg-deep); }
html::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--clr-accent-1), var(--clr-accent-2));
  border-radius: 3px;
}

body {
  font-family: var(--font-main);
  background: var(--grad-hero);
  color: var(--clr-text-main);
  overflow-x: hidden;
  line-height: 1.6;
  background-attachment: fixed;
}

/* Animated mesh gradient background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(108,99,255,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(255,107,107,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(78,205,196,0.05) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  animation: meshMove 20s ease-in-out infinite alternate;
}

@keyframes meshMove {
  0%   { transform: scale(1) translate(0,0); }
  50%  { transform: scale(1.1) translate(-2%, 2%); }
  100% { transform: scale(1) translate(2%, -2%); }
}

body > * { position: relative; z-index: 1; }

*::selection {
  background: var(--clr-accent-1);
  color: #fff;
}

/* ── Typography ─────────────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-head);
  text-decoration: none;
  text-transform: none;
}

a {
  text-decoration: none;
  transition: all var(--dur-fast) var(--ease-smooth);
}

/* ── Preloader ──────────────────────────────────────────────────── */
#preloader {
  position: fixed;
  inset: 0;
  background: var(--clr-bg-deep);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 99999;
  transition: opacity 0.8s var(--ease-smooth), visibility 0.8s;
  gap: 2rem;
}

#preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-logo {
  font-family: var(--font-head);
  font-size: 2.4rem;
  font-weight: 700;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.1em;
  animation: logoPulse 1.5s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { opacity: 0.6; transform: scale(0.98); }
  50%       { opacity: 1;   transform: scale(1.02); }
}

.preloader-bar {
  width: 200px;
  height: 3px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  overflow: hidden;
}

.preloader-bar::after {
  content: '';
  display: block;
  height: 100%;
  width: 40%;
  background: var(--grad-accent);
  border-radius: 2px;
  animation: barSlide 1.5s ease-in-out infinite;
}

@keyframes barSlide {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* ── Navbar ─────────────────────────────────────────────────────── */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 5%;
  height: 6.5rem;
  background: rgba(2, 0, 16, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--dur-mid) var(--ease-smooth),
              box-shadow var(--dur-mid) var(--ease-smooth);
}

header.scrolled {
  background: rgba(2, 0, 16, 0.92);
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

/* Logo */
header .logo {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 700;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
  transition: filter var(--dur-fast);
}

header .logo:hover { filter: brightness(1.3); }

/* Nav links */
header .navbar ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

header .navbar ul li a {
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: 0.6rem 1.2rem;
  border-radius: 2rem;
  letter-spacing: 0.02em;
  transition: all var(--dur-fast) var(--ease-smooth);
  position: relative;
  text-transform: none;
}

header .navbar ul li a::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 2rem;
  background: var(--clr-glass-bg);
  opacity: 0;
  transition: opacity var(--dur-fast);
}

header .navbar ul li a:hover,
header .navbar ul li a.active {
  color: #fff;
}

header .navbar ul li a:hover::before,
header .navbar ul li a.active::before {
  opacity: 1;
}

header .navbar ul li a.active {
  background: rgba(108,99,255,0.2);
  color: var(--clr-accent-1);
}

/* Hamburger */
#menu {
  font-size: 2.6rem;
  cursor: pointer;
  color: var(--clr-text-main);
  display: none;
  transition: color var(--dur-fast);
}

#menu:hover { color: var(--clr-accent-1); }

/* ── Section Base ───────────────────────────────────────────────── */
section {
  padding: var(--section-pad) clamp(2rem, 5%, 8rem);
  min-height: auto;
  position: relative;
  scroll-margin-top: 80px;
}

#home {
  min-height: 100vh;
  scroll-margin-top: 0 !important;
}

/* Section Heading */
.heading {
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 4vw, 4.2rem);
  font-weight: 700;
  color: var(--clr-text-main);
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 0.8rem;
  text-transform: none;
  position: relative;
}

.heading span {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.heading i {
  margin-right: 1rem;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Section separator */
.section-sep {
  display: block;
  width: 60px;
  height: 3px;
  background: var(--grad-accent);
  border-radius: 2px;
  margin: 1.2rem auto 3rem;
}

/* ── Reveal Animation Classes ───────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out-quart),
              transform 0.8s var(--ease-out-quart);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s var(--ease-out-quart),
              transform 0.8s var(--ease-out-quart);
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s var(--ease-out-quart),
              transform 0.8s var(--ease-out-quart);
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

/* ── Glassmorphism Card ─────────────────────────────────────────── */
.glass-card {
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  border-radius: 1.6rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background var(--dur-mid) var(--ease-smooth),
              border-color var(--dur-mid) var(--ease-smooth),
              transform var(--dur-mid) var(--ease-spring),
              box-shadow var(--dur-mid) var(--ease-smooth);
}

.glass-card:hover {
  background: var(--clr-glass-hover);
  border-color: rgba(108,99,255,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-purple);
}

/* ── Buttons ────────────────────────────────────────────────────── */
.btn-modern {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.2rem 2.8rem;
  border-radius: 5rem;
  font-family: var(--font-main);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--dur-mid) var(--ease-spring);
  position: relative;
  overflow: hidden;
  text-transform: none;
  border: none;
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--clr-accent-1), #5148c9);
  color: #fff;
  box-shadow: 0 8px 24px rgba(108,99,255,0.4);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 40px rgba(108,99,255,0.5);
  color: #fff;
}

.btn-primary:active { transform: translateY(0) scale(0.98); }

.btn-outline {
  background: transparent;
  color: var(--clr-text-main);
  border: 1.5px solid var(--clr-glass-border);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--clr-glass-bg);
  border-color: var(--clr-accent-1);
  color: var(--clr-accent-1);
  transform: translateY(-2px);
}

/* Shimmer effect on buttons */
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.6s var(--ease-smooth);
}
.btn-primary:hover::before { left: 100%; }

/* Old .btn compatibility */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.2rem 2.4rem;
  border-radius: 4rem;
  font-size: 1.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--dur-mid) var(--ease-spring);
  background: linear-gradient(135deg, var(--clr-accent-1), #5148c9);
  color: #fff;
  box-shadow: 0 8px 24px rgba(108,99,255,0.4);
  text-transform: none;
  border: none;
  letter-spacing: 0.02em;
}

.btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 40px rgba(108,99,255,0.5);
  color: #fff;
}

.btn span { font-weight: 600; }
.btn i { transition: transform var(--dur-fast) var(--ease-spring); }
.btn:hover i { transform: translateX(4px); }

.resumebtn { margin-top: 3rem; text-align: center; }
.resumebtn .btn {
  background: linear-gradient(135deg, var(--clr-orange), #FF4757);
  box-shadow: 0 8px 24px rgba(255,123,43,0.4);
}
.resumebtn .btn:hover {
  box-shadow: 0 16px 40px rgba(255,123,43,0.5);
  color: #fff;
}

/* ── HERO SECTION ───────────────────────────────────────────────── */
.home {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 8rem;
  text-align: center;
}

#test {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.home .content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.home-greeting {
  font-size: clamp(1.6rem, 2.5vw, 2rem);
  color: var(--clr-text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s var(--ease-out-quart) 0.3s both;
}

.home-greeting span { font-size: 1.8rem; }

.home .content h2 {
  font-family: var(--font-head);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 400;
  color: var(--clr-text-muted);
  margin-bottom: 0.5rem;
  animation: fadeInUp 0.8s var(--ease-out-quart) 0.5s both;
  text-transform: none;
}

.home .content h2 span { color: var(--clr-text-muted); }

.typing-text1-wrap {
  font-family: var(--font-head);
  font-size: clamp(3.5rem, 7vw, 7rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s var(--ease-out-quart) 0.7s both;
  margin-bottom: 2rem;
}

.home-subtitle {
  font-size: clamp(1.4rem, 2vw, 1.8rem);
  color: var(--clr-text-muted);
  max-width: 550px;
  margin: 0 auto 4rem;
  line-height: 1.7;
  animation: fadeInUp 0.8s var(--ease-out-quart) 0.9s both;
  text-transform: none;
}

.home-cta {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s var(--ease-out-quart) 1.1s both;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  opacity: 0.5;
  animation: fadeIn 1s var(--ease-smooth) 2s both;
}

.scroll-indicator span {
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
}

.scroll-mouse {
  width: 22px;
  height: 35px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 12px;
  position: relative;
}

.scroll-mouse::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--clr-accent-1);
  border-radius: 2px;
  animation: scrollDot 1.8s ease-in-out infinite;
}

@keyframes scrollDot {
  0%   { transform: translateX(-50%) translateY(0); opacity: 1; }
  80%  { transform: translateX(-50%) translateY(14px); opacity: 0; }
  100% { transform: translateX(-50%) translateY(0); opacity: 0; }
}

/* ── Floating Particles (particle canvas tweaks) ────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

/* ── ABOUT SECTION ──────────────────────────────────────────────── */
.about {
  min-height: auto;
  padding-bottom: var(--section-pad);
}

.about .row {
  display: flex;
  gap: 5rem;
  align-items: center;
  flex-wrap: wrap;
  max-width: var(--container-max);
  margin: 0 auto;
}

.about .row .image {
  flex: 1 1 28rem;
  display: flex;
  justify-content: center;
  position: relative;
}

/* Glowing ring behind image */
.about .row .image::before {
  content: '';
  position: absolute;
  width: 110%;
  height: 110%;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  background: linear-gradient(135deg, rgba(108,99,255,0.2), rgba(255,107,107,0.1));
  animation: morphBlob 8s ease-in-out infinite alternate;
  z-index: 0;
}

@keyframes morphBlob {
  0%   { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
  50%  { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
  100% { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
}

.about .row .image img {
  width: 30rem;
  height: 30rem;
  object-fit: cover;
  border-radius: 2rem;
  border: 2px solid var(--clr-glass-border);
  position: relative;
  z-index: 1;
  transition: transform var(--dur-mid) var(--ease-spring),
              box-shadow var(--dur-mid) var(--ease-smooth);
  filter: grayscale(15%);
}

.about .row .image img:hover {
  transform: scale(1.03) rotate(-1deg);
  box-shadow: var(--shadow-glow-purple), var(--shadow-card);
  filter: grayscale(0%);
}

.about .row .content {
  flex: 1 1 40rem;
}

.about .row .content h3 {
  font-size: clamp(2.5rem, 3.5vw, 3.5rem);
  font-weight: 700;
  color: var(--clr-text-main);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  text-transform: none;
}

.about .row .content .tag {
  font-size: 1.4rem;
  color: var(--clr-accent-4);
  font-weight: 500;
  margin-bottom: 2rem;
  padding: 0.8rem 1.6rem;
  background: rgba(78,205,196,0.1);
  border: 1px solid rgba(78,205,196,0.2);
  border-radius: 0.8rem;
  display: inline-block;
  text-transform: none;
}

.about .row .content p {
  font-size: 1.55rem;
  color: var(--clr-text-muted);
  line-height: 1.9;
  margin-bottom: 1.5rem;
  text-transform: none;
}

/* Stats row in about */
.about-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 3rem;
}

.about-stat {
  text-align: center;
  padding: 2rem 2.5rem;
}

.about-stat .num {
  font-family: var(--font-head);
  font-size: 3.5rem;
  font-weight: 800;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
}

.about-stat .label {
  font-size: 1.2rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.4rem;
}

/* ── RESEARCH EXPERIENCE ────────────────────────────────────────── */
.ResearchExperience {
  min-height: auto;
  padding-bottom: var(--section-pad);
}

.ResearchExperience .heading span { color: var(--clr-orange); }
.ResearchExperience .heading i {
  background: var(--grad-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 0;
  box-sizing: border-box;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--clr-accent-1) 10%, var(--clr-accent-2) 90%, transparent);
  transform: translateX(-50%);
  z-index: 0;
}

.timeline .container {
  position: relative;
  width: 50%;
  box-sizing: border-box;
  z-index: 1;
}

.timeline .container.left {
  left: 0;
  text-align: right;
  padding: 0 4rem 3.5rem 0;
}

.timeline .container.right {
  left: 50%;
  text-align: left;
  padding: 0 0 3.5rem 4rem;
}

/* Node / Dot on timeline - perfectly centered on the line */
.timeline .container::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: var(--clr-accent-1);
  border: 3px solid var(--clr-bg-deep);
  border-radius: 50%;
  top: 1.8rem;
  box-shadow: 0 0 12px var(--clr-accent-1);
  animation: nodePulse 2s ease-in-out infinite;
  z-index: 2;
  box-sizing: border-box;
}

.timeline .container.left::after {
  right: -8px;
  left: auto;
}

.timeline .container.right::after {
  left: -8px;
  right: auto;
}

@keyframes nodePulse {
  0%, 100% { box-shadow: 0 0 8px var(--clr-accent-1); }
  50%       { box-shadow: 0 0 20px var(--clr-accent-1), 0 0 35px rgba(108,99,255,0.3); }
}

/* Arrow connectors */
.timeline .container::before {
  content: '';
  position: absolute;
  top: 2rem;
  border: 8px solid transparent;
  z-index: 2;
}

.timeline .container.left::before {
  right: 2.4rem;
  border-left-color: rgba(255,123,43,0.7);
}

.timeline .container.right::before {
  left: 2.4rem;
  border-right-color: rgba(255,123,43,0.7);
}

.timeline .content {
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  border-radius: 1.2rem;
  padding: 2rem 2.5rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--dur-mid) var(--ease-smooth);
}

.timeline .content:hover {
  background: var(--clr-glass-hover);
  border-color: rgba(255,123,43,0.3);
  box-shadow: var(--shadow-glow-orange);
  transform: translateY(-3px);
}

.timeline .content .tag {
  padding: 0;
  margin-bottom: 1rem;
}

.timeline .content .tag h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--clr-text-main);
  text-transform: none;
  letter-spacing: -0.01em;
}

.timeline .content .desc h3 {
  font-size: 1.2rem;
  color: var(--clr-text-muted);
  font-weight: 400;
  text-transform: none;
}

.timeline .content .desc h3 span {
  color: var(--clr-orange);
  font-weight: 600;
}

.timeline .content .desc h3 a {
  color: var(--clr-accent-4);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.timeline .content .desc h2 {
  font-size: 1.3rem;
  color: var(--clr-accent-3);
  margin-top: 0.5rem;
  text-transform: none;
}

.timeline .content .desc p {
  font-size: 1.2rem;
  color: var(--clr-text-muted);
  margin-top: 0.5rem;
  text-transform: none;
}

.timeline .content .desc a {
  color: var(--clr-accent-1);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Stats Graph Container in Research Experience */
.graph-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3.5rem;
  margin: 1rem auto 4rem;
  flex-wrap: wrap;
  max-width: 1000px;
  width: 100%;
  padding: 0 1.5rem;
  box-sizing: border-box;
}

.experience-stats {
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  margin: 0;
}

.experience-stats .about-stat {
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  border-radius: 1.6rem;
  padding: 1.8rem 2.4rem;
  min-width: 120px;
  text-align: center;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  transition: all var(--dur-mid) var(--ease-smooth);
  opacity: 1 !important;
  transform: none !important;
  visibility: visible !important;
}

.experience-stats .about-stat:hover {
  background: var(--clr-glass-hover);
  border-color: rgba(108, 99, 255, 0.45);
  transform: translateY(-4px) !important;
  box-shadow: 0 8px 30px rgba(108, 99, 255, 0.25);
}

.experience-stats .about-stat .num {
  font-family: var(--font-head);
  font-size: 3.4rem;
  font-weight: 800;
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.experience-stats .about-stat .label {
  font-size: 1.25rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.6rem;
  font-weight: 600;
}

.graph-container .chart {
  flex: 1 1 360px;
  min-width: 280px;
  max-width: 480px;
  height: 180px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.graph-container .chart canvas {
  width: 100% !important;
  max-height: 180px !important;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.tab-button {
  padding: 1rem 2.5rem;
  border: 1.5px solid var(--clr-glass-border);
  border-radius: 3rem;
  background: var(--clr-glass-bg);
  color: var(--clr-text-muted);
  font-family: var(--font-main);
  font-size: 1.4rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--dur-mid) var(--ease-smooth);
  text-transform: none;
  backdrop-filter: blur(8px);
}

.tab-button:hover {
  border-color: var(--clr-accent-1);
  color: var(--clr-accent-1);
  transform: translateY(-2px);
}

.tab-button.active {
  background: linear-gradient(135deg, var(--clr-accent-1), #5148c9);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 20px rgba(108,99,255,0.4);
}

.tab-content {
  display: none;
  opacity: 0;
  transition: opacity var(--dur-mid) var(--ease-smooth);
}

.tab-content.active {
  display: block;
  opacity: 1;
}

.center { display: flex; justify-content: center; }

/* Academic section headings */
#academic-section h2 {
  font-size: 1.4rem;
  color: var(--clr-orange);
  text-transform: none;
  font-weight: 500;
}

/* ── PRESENT WORK SECTION ───────────────────────────────────────── */
.education {
  min-height: auto;
  padding-bottom: var(--section-pad);
}

.education .heading span { color: var(--clr-accent-2); }

/* Present Work List */
.list#present-work-list {
  list-style: none;
  max-width: 1200px;
  margin: 0 auto 3rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  align-items: start;
  transition: all var(--dur-mid) var(--ease-smooth);
}

/* Static typing item spans full width */
.list#present-work-list > li:first-child {
  grid-column: 1 / -1;
  margin-bottom: 0.5rem;
}

.list#present-work-list > li:not(:first-child) {
  margin-bottom: 0;
  transition: grid-column 0.3s var(--ease-smooth), transform var(--dur-fast);
}

/* Collapsed items: all same uniform size */
.list#present-work-list > li:not(:first-child):not(.active):not(:has(.PresentWork_tag.active)) {
  display: flex;
  flex-direction: column;
  height: 84px;
}

.list#present-work-list > li:not(:first-child):not(.active):not(:has(.PresentWork_tag.active)) .PresentWork_tag {
  height: 84px;
}

/* Expanded item: expands in its own way across full width */
.list#present-work-list > li.active,
.list#present-work-list > li:has(.PresentWork_tag.active) {
  grid-column: 1 / -1 !important;
  height: auto !important;
}

.list#present-work-list > li.active .PresentWork_tag,
.list#present-work-list > li:has(.PresentWork_tag.active) .PresentWork_tag,
.PresentWork_tag.active {
  height: auto !important;
}

.PresentWork_tag {
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  border-radius: 1.4rem;
  overflow: hidden;
  transition: all var(--dur-mid) var(--ease-smooth);
  backdrop-filter: blur(14px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
}

.PresentWork_tag:hover {
  border-color: rgba(255,107,107,0.45);
  box-shadow: 0 8px 32px rgba(255,107,107,0.12);
  transform: translateY(-2px);
}

.PresentWork_tag h6 {
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--clr-text-main);
  padding: 1.8rem 2.2rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-transform: none;
  letter-spacing: -0.01em;
  transition: color var(--dur-fast), background var(--dur-fast);
  margin: 0;
  user-select: none;
  height: 84px;
  box-sizing: border-box;
}

.PresentWork_tag.active h6 {
  height: auto;
  min-height: 70px;
}

.PresentWork_tag h6::after {
  content: '\f078';
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
  font-size: 1.3rem;
  color: var(--clr-text-muted);
  transition: transform var(--dur-mid) var(--ease-smooth);
  margin-left: 1.2rem;
  flex-shrink: 0;
}

.PresentWork_tag h6:hover {
  color: var(--clr-accent-2);
  background: rgba(255, 107, 107, 0.05);
}

.PresentWork_tag.active {
  border-color: rgba(255,107,107,0.5);
  box-shadow: 0 12px 40px rgba(255,107,107,0.22);
  background: rgba(255, 255, 255, 0.04);
}

.PresentWork_tag.active h6 {
  color: var(--clr-accent-2);
  border-bottom: 1px solid rgba(255,107,107,0.25);
  background: rgba(255, 107, 107, 0.08);
}

.PresentWork_tag.active h6::after {
  transform: rotate(180deg);
  color: var(--clr-accent-2);
}

.PresentWork_content {
  display: none;
  padding: 2.5rem 2.8rem;
  gap: 2.5rem;
  align-items: flex-start;
  flex: 1;
}

.PresentWork_tag.active .PresentWork_content {
  display: flex;
  animation: slideDown 0.4s var(--ease-out-quart) both;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.PresentWork_image {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  flex-shrink: 0;
}

.PresentWork_image img {
  max-width: 240px;
  width: 100%;
  border-radius: 1rem;
  border: 1px solid var(--clr-glass-border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  transition: transform var(--dur-fast) ease;
}

.PresentWork_image img:hover {
  transform: scale(1.03);
}

.PresentWork_tag p {
  font-size: 1.55rem;
  color: var(--clr-text-muted);
  line-height: 1.85;
  text-transform: none;
  display: block;
  flex: 1;
}

.PresentWork_tag p span {
  color: var(--clr-accent-2);
  font-weight: 700;
  font-size: 1.6rem !important;
}

@media (max-width: 860px) {
  .list#present-work-list {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .PresentWork_content {
    flex-direction: column;
  }
  .PresentWork_image {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
  }
  .PresentWork_image img {
    max-width: 180px;
  }
}

/* Static typing item */
.list#present-work-list > li:first-child .tag {
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  border-radius: 1.4rem;
  padding: 2rem 2.4rem;
  text-align: left;
  backdrop-filter: blur(14px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.list#present-work-list > li:first-child h5 {
  font-size: 1.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  text-transform: none;
  font-family: var(--font-main);
  margin: 0;
}

.typing-text {
  color: var(--clr-accent-1) !important;
  font-weight: 700;
}

/* ── RSS FEED / TRENDING ────────────────────────────────────────── */
.trending-heading {
  text-align: center;
  margin: 5rem 0 2rem;
}

.ticker-container {
  position: relative;
  width: 100%;
  overflow: hidden;
  margin: 1.5rem 0;
  border-radius: 1.2rem;
  white-space: nowrap;
}

.ticker-content {
  display: flex;
  align-items: stretch;
  gap: 1.5rem;
  padding: 1rem 0;
}

.feed-item {
  flex: 0 0 auto;
  width: 230px;
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  border-radius: 1rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
  backdrop-filter: blur(8px);
}

.feed-item:hover {
  border-color: rgba(108,99,255,0.3);
  box-shadow: 0 8px 24px rgba(108,99,255,0.2);
}

.feed-item img {
  width: 100%;
  height: 110px;
  object-fit: cover;
}

.feed-item .content {
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.8rem;
}

.feed-item a {
  font-size: 1.2rem;
  color: var(--clr-text-main);
  font-weight: 500;
  white-space: normal;
  line-height: 1.5;
  display: block;
  text-transform: none;
  overflow-wrap: break-word;
}

.feed-item a:hover { color: var(--clr-accent-1); }

.feed-item small {
  font-size: 1.1rem;
  color: var(--clr-orange);
  margin-top: auto;
}

/* ── TALK / PRESENTATION SECTION (Fixed Size & Side Controls) ─────── */
.Talk {
  min-height: auto;
  overflow: visible;
  padding-top: calc(var(--section-pad) * 0.75);
  padding-bottom: var(--section-pad);
  position: relative;
}

/* Fluid divider merge with preceding section */
.Talk::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 159, 28, 0.25), transparent);
}

.Talk .heading span { color: var(--clr-orange); }

/* Fixed-size Modern Carousel */
#myCarousel {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  width: 100%;
}

.carousel-inner {
  border-radius: 1.6rem;
  overflow: hidden;
  position: relative;
  width: 100%;
}

.carousel-item {
  display: none;
  width: 100%;
  animation: fadeSlide 0.5s var(--ease-out-quart) both;
}

.carousel-item.active { display: block; }

@keyframes fadeSlide {
  from { opacity: 0; transform: scale(0.98); }
  to   { opacity: 1; transform: scale(1); }
}

.carousel-img-wrap {
  width: 100%;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(4, 1, 20, 0.6);
  border-radius: 1.4rem;
  border: 1px solid var(--clr-glass-border);
  overflow: hidden;
}

.slider-image {
  width: 100%;
  height: 100%;
  max-height: 420px;
  object-fit: contain;
  border-radius: 1.4rem;
  display: block;
  margin: 0 auto;
  cursor: pointer;
  transition: transform var(--dur-mid) var(--ease-smooth);
}

.slider-image:hover {
  transform: scale(1.02);
}

.carousel-caption-custom {
  text-align: center;
  margin-top: 1.6rem;
  padding: 1.8rem 2.2rem;
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  border-radius: 1.4rem;
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
  min-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.carousel-caption-custom p {
  font-size: 1.55rem;
  color: var(--clr-text-main);
  margin-bottom: 0.6rem;
  text-transform: none;
  letter-spacing: -0.01em;
}

.carousel-caption-custom p.talk-title {
  color: var(--clr-orange);
  font-weight: 600;
  font-size: 1.65rem;
}

.carousel-caption-custom p.talk-loc {
  font-size: 1.35rem;
  color: var(--clr-text-muted);
}

/* Previous button at left, Next button at right */
.carousel-control-prev,
.carousel-control-next {
  position: absolute;
  top: 210px;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  background: rgba(2, 0, 16, 0.85);
  border: 1.5px solid var(--clr-glass-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-text-main);
  opacity: 0.95;
  transition: all var(--dur-fast) var(--ease-smooth);
  cursor: pointer;
  text-decoration: none;
  font-size: 1.6rem;
  z-index: 10;
  backdrop-filter: blur(10px);
}

.carousel-control-prev {
  left: -25px;
}

.carousel-control-next {
  right: -25px;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
  background: var(--clr-orange);
  border-color: var(--clr-orange);
  color: #fff;
  transform: translateY(-50%) scale(1.12);
  box-shadow: 0 6px 20px rgba(255, 159, 28, 0.5);
  opacity: 1;
}

@media (max-width: 920px) {
  .carousel-control-prev { left: 10px; }
  .carousel-control-next { right: 10px; }
  .carousel-img-wrap,
  .slider-image {
    height: 280px;
    max-height: 280px;
  }
  .carousel-control-prev,
  .carousel-control-next {
    top: 140px;
  }
}

/* ── COLLABORATORS ──────────────────────────────────────────────── */
.work {
  min-height: auto;
  padding-bottom: var(--section-pad);
}

.work .heading span { color: var(--clr-accent-3); }

.work .box-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.work .box-container .box {
  position: relative;
  border-radius: 1.6rem;
  overflow: hidden;
  height: auto;
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: all var(--dur-mid) var(--ease-spring);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3rem 2rem 2.5rem;
  text-align: center;
}

.work .box-container .box:hover {
  transform: translateY(-8px);
  border-color: rgba(108,99,255,0.4);
  box-shadow: 0 16px 40px rgba(108,99,255,0.2), var(--shadow-card);
}

/* Collaborator Figure Avatar */
.work .collab-avatar-wrap {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  margin: 0 auto 1.8rem;
  padding: 8px;
  background: radial-gradient(circle, rgba(108,99,255,0.25) 0%, rgba(255,255,255,0.06) 70%);
  border: 2px solid rgba(108,99,255,0.5);
  box-shadow: 0 0 25px rgba(108,99,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: transform var(--dur-mid) var(--ease-spring), border-color var(--dur-mid), box-shadow var(--dur-mid);
}

.work .box:hover .collab-avatar-wrap {
  transform: scale(1.08);
  border-color: var(--clr-accent-1);
  box-shadow: 0 0 35px rgba(108,99,255,0.5);
}

.work .collab-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: invert(1) drop-shadow(0 4px 8px rgba(0,0,0,0.4));
  opacity: 0.95;
  transition: opacity var(--dur-mid);
}

.work .box-container .box .content {
  position: static;
  width: 100%;
  padding: 0;
  background: none;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.work .box-container .box .content .tag h3 {
  font-family: var(--font-head);
  font-size: 2.1rem;
  font-weight: 700;
  color: #FFFFFF;
  text-transform: none;
  letter-spacing: -0.01em;
  margin-bottom: 0.8rem;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.work .desc p.collab-role {
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--clr-accent-3);
  margin-bottom: 0.4rem;
  line-height: 1.4;
}

.work .desc p.collab-affil {
  font-size: 1.3rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
  margin-bottom: 1.5rem;
  min-height: 4rem;
}

.work .desc .btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
}

.work .desc .btns .btn {
  padding: 0.8rem 1.6rem;
  font-size: 1.25rem;
  font-weight: 500;
  border-radius: 2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--clr-glass-border);
  color: var(--clr-text-main);
  transition: all var(--dur-fast) var(--ease-smooth);
}

.work .desc .btns .btn:hover {
  background: var(--clr-accent-1);
  border-color: var(--clr-accent-1);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(108,99,255,0.35);
}

/* ── SKILLS SECTION ─────────────────────────────────────────────── */
.skills {
  min-height: auto;
  padding-bottom: var(--section-pad);
  padding-top: var(--section-pad);
}

.skills .heading span { color: var(--clr-orange); }

.skills .container {
  max-width: var(--container-max);
  margin: 0 auto;
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  border-radius: 2rem;
  padding: 3rem;
  backdrop-filter: blur(12px);
}

.skills .container .row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 2rem;
}

.skills .container .bar {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--clr-glass-border);
  border-radius: 1.2rem;
  padding: 2rem 1rem;
  text-align: center;
  cursor: default;
  transition: all var(--dur-mid) var(--ease-spring);
  position: relative;
  overflow: hidden;
}

.skills .container .bar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-accent);
  opacity: 0;
  transition: opacity var(--dur-mid);
  border-radius: inherit;
}

.skills .container .bar:hover {
  transform: translateY(-6px) scale(1.04);
  border-color: transparent;
  box-shadow: var(--shadow-glow-purple);
}

.skills .container .bar:hover::before { opacity: 0.1; }

.skills .container .bar .info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  position: relative;
  z-index: 1;
}

.skills .container .bar .info img {
  width: 4.8rem;
  height: 4.8rem;
  object-fit: contain;
  transition: transform var(--dur-mid) var(--ease-spring);
}

.skills .container .bar:hover .info img {
  transform: scale(1.15) rotate(-5deg);
}

.skills .container .bar .info span {
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: color var(--dur-fast);
  text-transform: none;
}

.skills .container .bar:hover .info span { color: var(--clr-text-main); }

/* ── EDUCATION / QUALIFICATION ──────────────────────────────────── */
#education {
  min-height: auto;
  padding-bottom: var(--section-pad);
}

#education .heading span {
  background: var(--grad-teal);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#education .box-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 850px;
  margin: 0 auto;
}

.education-card {
  display: flex;
  gap: 2.5rem;
  align-items: center;
  padding: 2.5rem;
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  border-radius: 1.6rem;
  backdrop-filter: blur(12px);
  transition: all var(--dur-mid) var(--ease-spring);
}

.education-card:hover {
  transform: translateX(8px);
  border-color: rgba(78,205,196,0.3);
  box-shadow: 0 8px 30px rgba(78,205,196,0.15);
}

.education-card .image {
  flex: 0 0 100px;
  height: 80px;
  border-radius: 0.8rem;
  overflow: hidden;
  border: 1px solid var(--clr-glass-border);
}

.education-card .image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.education-card .content h3 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--clr-text-main);
  text-transform: none;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}

.education-card .content p {
  font-size: 1.4rem;
  color: var(--clr-text-muted);
  text-transform: none;
}

/* ── CONTACT / FOOTER (Compact & Equally Spaced) ────────────────── */
.footer {
  min-height: auto;
  padding-top: var(--section-pad);
  padding-bottom: 2.5rem;
  border-top: 1px solid var(--clr-glass-border);
}

/* Compact Quote */
.footer-quote {
  text-align: center;
  margin: 0 auto 1.5rem;
  max-width: 580px;
  padding: 1.8rem 2.2rem;
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  border-radius: 1.4rem;
  backdrop-filter: blur(10px);
}

.footer-quote p {
  font-size: 1.5rem;
  color: var(--clr-text-main);
  line-height: 1.8;
  font-style: italic;
  text-transform: none;
}

.footer-quote .author {
  color: var(--clr-orange);
  font-style: normal;
  font-weight: 600;
  margin-top: 0.5rem;
  font-size: 1.35rem;
}

/* Compact Social Icons */
.socials { text-align: center; margin-bottom: 2.5rem; }
.social-icons { list-style: none; padding: 0; display: flex; justify-content: center; flex-wrap: wrap; gap: 0; }

.social-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4.4rem;
  height: 4.4rem;
  border-radius: 50%;
  font-size: 1.7rem;
  color: var(--clr-text-muted);
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  margin: 0.4rem;
  transition: all var(--dur-mid) var(--ease-spring);
  backdrop-filter: blur(8px);
}

.social-icons a:hover {
  transform: translateY(-4px) scale(1.1);
  color: #fff;
  box-shadow: 0 8px 24px rgba(108,99,255,0.4);
  border-color: var(--clr-accent-1);
  background: var(--clr-accent-1);
}

.social-icons a.linkedin:hover  { background: #0077b5; border-color: #0077b5; box-shadow: 0 8px 24px rgba(0,119,181,0.5); }
.social-icons a.instagram:hover { background: linear-gradient(45deg,#f58529,#dd2a7b,#8134af); border-color: #dd2a7b; }
.social-icons a.telegram:hover  { background: #0088cc; border-color: #0088cc; box-shadow: 0 8px 24px rgba(0,136,204,0.5); }
.social-icons a.google-scholar:hover { background: var(--clr-orange); border-color: var(--clr-orange); box-shadow: var(--shadow-glow-orange); }
.social-icons a.dev:hover { background: #ea4335; border-color: #ea4335; box-shadow: 0 8px 24px rgba(234,67,53,0.5); }

/* Compact Kodama */
.wrapper2 {
  display: flex;
  justify-content: center;
  margin: 1rem 0 1.5rem;
}

/* Symmetrically & Equally Spaced Research Nexus and Quick Links */
.footer .box-container.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(280px, 1fr));
  gap: 2.5rem;
  max-width: 960px;
  margin: 0 auto 2.5rem;
  padding: 0 1.5rem;
  align-items: stretch;
}

.footer .box-container.footer-links-grid .box {
  width: 100%;
  max-width: none;
  padding: 2.2rem 2.4rem;
  border-radius: 1.6rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
}

.container_contact,
.container_quick_links {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.container_contact h3,
.quick-links-title {
  font-family: var(--font-head);
  font-size: 1.7rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  text-transform: none;
}

.container_contact h3 {
  color: var(--clr-accent-3);
}

.quick-links-title {
  color: var(--clr-accent-1);
}

.row_contact,
.quick-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  width: 100%;
  align-items: center;
}

.row_contact .bar,
.quick-links-grid .bar {
  padding: 0.85rem 1.2rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--clr-glass-border);
  border-radius: 2rem;
  text-align: center;
  transition: all var(--dur-fast) var(--ease-smooth);
}

.row_contact .bar:hover {
  background: rgba(255, 217, 61, 0.15);
  border-color: var(--clr-accent-3);
  transform: translateY(-2px);
}

.quick-links-grid .bar:hover {
  background: rgba(108, 99, 255, 0.15);
  border-color: var(--clr-accent-1);
  transform: translateY(-2px);
}

.row_contact .bar a,
.quick-links-grid .bar a {
  font-size: 1.25rem;
  color: var(--clr-text-main);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  text-transform: none;
}

.row_contact .bar:hover a { color: var(--clr-accent-3); }
.quick-links-grid .bar:hover a { color: var(--clr-accent-1); }

@media (max-width: 768px) {
  .footer .box-container.footer-links-grid {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }
}

/* Footer credit */
.footer .credit {
  text-align: center;
  font-size: 1.4rem;
  color: var(--clr-text-muted);
  border-top: 1px solid var(--clr-glass-border);
  padding-top: 2rem;
  margin-top: 2rem;
  text-transform: none;
  font-family: var(--font-main);
}

.footer .credit a { color: var(--clr-orange); }

.footer .fa {
  color: #FF6B6B;
  margin: 0 0.3rem;
  font-size: 1.4rem;
  animation: heartBeat 0.8s ease infinite alternate;
}

@keyframes heartBeat {
  from { transform: scale(1); }
  to   { transform: scale(1.2); }
}

/* ── SCROLL TOP ─────────────────────────────────────────────────── */
#scroll-top {
  position: fixed;
  bottom: 3rem;
  right: 2.5rem;
  width: 4.8rem;
  height: 4.8rem;
  background: linear-gradient(135deg, var(--clr-accent-1), var(--clr-accent-2));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  box-shadow: 0 8px 24px rgba(108,99,255,0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--dur-mid) var(--ease-spring);
  z-index: 999;
  text-decoration: none;
}

#scroll-top.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  top: auto;
}

#scroll-top:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 16px 40px rgba(108,99,255,0.5);
  color: #fff;
}

/* ── MOBILE MENU ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  #menu { display: block; }

  header .navbar {
    position: fixed;
    top: 6.5rem;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: calc(100vh - 6.5rem);
    background: rgba(2, 0, 16, 0.96);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--clr-glass-border);
    transition: right var(--dur-mid) var(--ease-smooth);
    overflow-y: auto;
    padding: 2rem 0;
  }

  header .navbar.nav-toggle { right: 0; }

  header .navbar ul {
    flex-direction: column;
    padding: 1rem 2rem;
    gap: 0.5rem;
  }

  header .navbar ul li { width: 100%; }

  header .navbar ul li a {
    display: block;
    padding: 1.2rem 1.8rem;
    font-size: 1.6rem;
    border-radius: 1rem;
    color: var(--clr-text-main);
  }

  header .navbar ul li a.active {
    background: rgba(108,99,255,0.2);
    color: var(--clr-accent-1);
  }

  /* Overlay when menu open */
  .nav-overlay {
    display: none;
    position: fixed;
    inset: 6.5rem 0 0 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    backdrop-filter: blur(4px);
  }
  .nav-overlay.active { display: block; }

  /* Hero */
  .home { padding-top: 10rem; }
  .typing-text1-wrap { font-size: clamp(3rem, 10vw, 5rem); }
  .home-cta { flex-direction: column; align-items: center; }

  /* About */
  .about .row { flex-direction: column; gap: 3rem; }
  .about .row .image img { width: 24rem; height: 24rem; }
  .about-stats { justify-content: center; }

  /* Timeline */
  .timeline::before { left: 20px; transform: none; }
  .timeline .container {
    width: 100% !important;
    padding: 0 0 3rem 52px !important;
    left: 0 !important;
    text-align: left !important;
  }
  .timeline .container::after { left: 13px !important; right: auto !important; }
  .timeline .container::before {
    left: 38px !important;
    right: auto !important;
    border-left-color: transparent !important;
    border-right-color: rgba(255,123,43,0.7) !important;
  }

  /* Skills */
  .skills .container .row { grid-template-columns: repeat(3, 1fr); }

  /* Education */
  .education-card { flex-direction: column; }
  .education-card .image { width: 100%; height: 120px; }

  /* Footer */
  .skills .container_contact .row_contact { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  html { font-size: 55%; }
  section { padding: 6rem 2rem; }
  .skills .container .row { grid-template-columns: repeat(2, 1fr); }
  .graph-container { flex-direction: column; }
}

/* ── UTILITY ─────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.mt-sm { margin-top: 1.5rem; }
.mt-md { margin-top: 3rem; }
.mt-lg { margin-top: 5rem; }

/* Bootstrap display helpers (keep compatibility) */
.d-none { display: none !important; }
.d-block { display: block !important; }
@media (min-width: 768px) {
  .d-md-block { display: block !important; }
  .d-none.d-md-block { display: block !important; }
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ── KODAMA (keep existing) ───────────────────────────────────────── */
.wrapper2 { display: flex; justify-content: center; }