/* ══════════════════════════════════════════════════════════
   NILOY KANTI PAUL — PORTFOLIO v4.0
   Production-Ready | SEO Optimized | Performance Tuned
   Design: Dark Luxury / Editorial Tech Aesthetic
══════════════════════════════════════════════════════════ */
:root {
  --bg0: #0a0e27;
  --bg1: #0f1433;
  --bg2: #151a3f;
  --bg3: #1a2049;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-h: rgba(255, 255, 255, 0.06);
  --accent: #10b981;
  --border-dot: #10b981cf;
  --accent-mid: #059669;
  --accent-dim: rgba(16, 185, 129, 0.1);
  --accent-glow: rgba(16, 185, 129, 0.25);
  --coral: #f97316;
  --coral-dim: rgba(249, 115, 22, 0.1);
  --coral-glow: rgba(249, 115, 22, 0.2);
  --violet: #8b5cf6;
  --violet-dim: rgba(139, 92, 246, 0.1);
  --violet-glow: rgba(139, 92, 246, 0.2);
  --text: #f1f5f9;
  --text-dim: #94a3b8;
  --text-mid: #cbd5e1;
  --border: rgba(16, 185, 129, 0.15);
  --border-h: rgba(16, 185, 129, 0.4);
  --border-light: rgba(255, 255, 255, 0.08);
  --font-display: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) var(--bg1);
}
::-webkit-scrollbar {
  width: 3px;
}
::-webkit-scrollbar-track {
  background: var(--bg1);
}
::-webkit-scrollbar-thumb {
  background: var(--accent);
}

body {
  background: var(--bg0);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
  cursor: none;
  will-change: scroll-position;
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  opacity: 0.03;
  pointer-events: none;
  z-index: 9996;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ── SCROLL PROGRESS ── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent);
  z-index: 10001;
  transform-origin: left;
  transform: scaleX(0);
  transition: transform var(--transition-fast);
  box-shadow: 0 0 15px var(--accent-glow);
}
.scroll-progress::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 30px;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4));
  filter: blur(8px);
  animation: shimmer 2s infinite;
}
@keyframes shimmer {
  0% { opacity: 0.5; }
  50% { opacity: 1; }
  100% { opacity: 0.5; }
}

/* ── CUSTOM CURSOR ── */
#csr {
  position: fixed;
  width: 10px;
  height: 10px;
  background: var(--accent);
  transform: translate(-50%, -50%) rotate(45deg);
  pointer-events: none;
  z-index: 99999;
  transition: transform 0.12s, background var(--transition-fast);
}
#csr-r {
  position: fixed;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(16, 185, 129, 0.5);
  transform: translate(-50%, -50%) rotate(45deg);
  pointer-events: none;
  z-index: 99998;
  transition: left 0.08s, top 0.08s, width 0.25s, height 0.25s;
}
#csr.hov {
  transform: translate(-50%, -50%) rotate(45deg) scale(2.2);
  background: var(--coral);
}
#csr-r.hov {
  width: 54px;
  height: 54px;
  border-color: var(--coral);
}

/* ── SECTIONS ── */
section {
  position: relative;
  z-index: 1;
  padding: 120px 5%;
  transition: all var(--transition-smooth);
  will-change: transform, opacity;
}
section::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}
#hero::before { background: radial-gradient(circle at 20% 80%, rgba(16, 185, 129, .08) 0%, transparent 50%); }
#about::before { background: radial-gradient(circle at 80% 20%, rgba(249, 115, 22, .06) 0%, transparent 50%); }
#skills::before { background: radial-gradient(circle at 30% 70%, rgba(139, 92, 246, .05) 0%, transparent 50%); }
#experience::before { background: radial-gradient(circle at 70% 30%, rgba(16, 185, 129, .06) 0%, transparent 50%); }
#education::before { background: radial-gradient(circle at 25% 75%, rgba(249, 115, 22, .05) 0%, transparent 50%); }
#projects::before { background: radial-gradient(circle at 75% 25%, rgba(139, 92, 246, .06) 0%, transparent 50%); }
#case-studies::before { background: radial-gradient(circle at 40% 60%, rgba(16, 185, 129, .04) 0%, transparent 50%); }
#publications::before { background: radial-gradient(circle at 60% 40%, rgba(249, 115, 22, .05) 0%, transparent 50%); }
#certifications::before { background: radial-gradient(circle at 35% 65%, rgba(139, 92, 246, .05) 0%, transparent 50%); }
#contact::before { background: radial-gradient(circle at 65% 35%, rgba(16, 185, 129, .06) 0%, transparent 50%); }

section.scroll-out {
  opacity: 0.6;
  transform: scale(0.95) translateY(30px);
  pointer-events: none;
}
section.scroll-in {
  opacity: 1;
  transform: scale(1) translateY(0);
}
section.scroll-active {
  opacity: 1;
  transform: scale(1.02) translateY(-5px);
}

/* ── MORPH ANIMATIONS ── */
.morph-container {
  position: relative;
  overflow: hidden;
}
.morph-shape {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--accent), var(--coral));
  border-radius: 50%;
  transition: all var(--transition-slow);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  will-change: border-radius, transform;
}
.morph-shape.morph-1 {
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  animation: morph1 8s ease-in-out infinite;
}
.morph-shape.morph-2 {
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  animation: morph2 10s ease-in-out infinite;
}
.morph-shape.morph-3 {
  border-radius: 40% 60% 60% 40% / 60% 30% 70% 40%;
  animation: morph3 12s ease-in-out infinite;
}
@keyframes morph1 {
  0%, 100% {
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    transform: translate(-50%, -50%) rotate(0deg);
  }
  50% {
    border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%;
    transform: translate(-50%, -50%) rotate(180deg);
  }
}
@keyframes morph2 {
  0%, 100% {
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    border-radius: 60% 40% 30% 70% / 50% 60% 40% 50%;
    transform: translate(-50%, -50%) scale(1.1);
  }
}
@keyframes morph3 {
  0%, 100% {
    border-radius: 40% 60% 60% 40% / 60% 30% 70% 40%;
    transform: translate(-50%, -50%) rotate(0deg);
  }
  33% {
    border-radius: 60% 40% 30% 70% / 30% 60% 40% 70%;
    transform: translate(-50%, -50%) rotate(120deg);
  }
  66% {
    border-radius: 30% 60% 40% 70% / 50% 30% 60% 40%;
    transform: translate(-50%, -50%) rotate(240deg);
  }
}

/* ── SECTION HEADER MORPH ── */
.sec-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.5vw, 5rem);
  font-weight: 400;
  letter-spacing: -0.5px;
  line-height: 0.95;
  color: var(--text);
  margin-bottom: 20px;
  position: relative;
  display: inline-block;
  will-change: transform;
}
.sec-title::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  border-radius: 20px;
  opacity: 0;
  transform: scale(0.8);
  transition: all var(--transition-smooth);
  z-index: -1;
}
section.scroll-active .sec-title::before {
  opacity: 0.3;
  transform: scale(1);
}
.sec-title .hi {
  color: var(--accent);
}
.sec-title .hi2 {
  color: var(--coral);
}

/* ── AMBIENT GLOW ── */
.amb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  will-change: transform;
}
.amb1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(16, 185, 129, .08), transparent 70%);
  top: -200px;
  right: -100px;
  animation: am 12s ease-in-out infinite;
}
.amb2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(249, 115, 22, .06), transparent 70%);
  bottom: 0;
  left: -100px;
  animation: am 9s ease-in-out infinite reverse;
}
.amb3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(139, 92, 246, .05), transparent 70%);
  top: 40%;
  left: 40%;
  animation: am 22s ease-in-out infinite 5s;
}
@keyframes am {
  0%, 100% { transform: scale(1) translate(0, 0); }
  50% { transform: scale(1.1) translate(30px, -30px); }
}

/* ── CANVAS ── */
#constellation {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
  will-change: opacity;
}

/* ── REVEAL ANIMATIONS ── */
.rv {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.rvl {
  opacity: 0;
  transform: translateX(-44px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.rvr {
  opacity: 0;
  transform: translateX(44px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.rv.on,
.rvl.on,
.rvr.on {
  opacity: 1;
  transform: none;
}

/* ── LAYOUT ── */
.max {
  max-width: 1400px;
  margin: 0 auto;
}

/* ── SECTION HEADERS ── */
.sec-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.sec-eyebrow::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--accent);
}

/* ── NAVIGATION ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 22px 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-smooth);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(10px);
}
nav.scrolled {
  background: rgba(10, 14, 39, .95);
  border-bottom: 1px solid var(--border);
  padding: 14px 5%;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
  text-decoration: none;
  line-height: 1;
  transition: color var(--transition-fast);
}
.nav-logo:hover {
  color: var(--accent);
}
.nav-logo span {
  color: var(--violet);
}
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-fast);
}
.nav-links a:hover {
  color: var(--accent);
}
.nav-links a:hover::after {
  width: 100%;
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--accent);
  color: var(--accent) !important;
  padding: 8px 20px;
  font-size: 0.8rem !important;
  font-weight: 600 !important;
  letter-spacing: 0.12em !important;
  transition: all var(--transition-fast) !important;
}
.nav-cta:hover {
  background: var(--accent);
  color: var(--bg0) !important;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px var(--accent-glow);
}
.hbtn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  transition: all var(--transition-fast);
}
.hbtn:hover {
  transform: scale(1.1);
}
.hbtn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: all var(--transition-fast);
  transform-origin: center;
}

/* ── MOBILE NAV ── */
.mob {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 39, .98);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  transform: translateX(100%);
  transition: transform var(--transition-smooth) cubic-bezier(.77, 0, .18, 1);
  backdrop-filter: blur(20px);
  overflow-y: auto;
}
.mob.open {
  transform: none;
}
.mob-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 20px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}
.mob-logo {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}
.mob-logo span {
  color: var(--violet);
}
.mob-close {
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 10px;
  border-radius: 50%;
}
.mob-close:hover {
  color: var(--accent);
  background: var(--accent-dim);
  transform: rotate(90deg);
}
.mob-nav-item {
  display: flex;
  align-items: center;
  gap: 15px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--text);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
  padding: 12px 30px;
  border-radius: 15px;
  width: 100%;
  max-width: 280px;
}
.mob-nav-item i {
  font-size: 1rem;
  color: var(--accent);
  width: 36px;
  text-align: center;
}
.mob-nav-item:hover {
  color: var(--accent);
  background: var(--accent-dim);
  transform: translateX(10px);
}
.mob-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 15px 30px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 15px;
  transition: all var(--transition-fast);
  border-radius: 50px;
}
.mob-cta:hover {
  background: var(--accent);
  color: var(--bg0);
  transform: scale(1.05);
  box-shadow: 0 10px 30px var(--accent-glow);
}

/* ── HERO ── */
#hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 0;
  padding-top: 80px;
  overflow: hidden;
}
.hero-img-panel {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
}
.hip-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  filter: saturate(0.7) contrast(1.05);
  transition: filter var(--transition-smooth);
}
.hip-img:hover {
  filter: saturate(1) contrast(1);
}
.hip-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, transparent 40%, var(--bg0) 100%), linear-gradient(to top, rgba(10, 14, 39, .8) 0%, transparent 40%);
}
.hip-tag {
  position: absolute;
  bottom: 40px;
  left: 40px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hip-tag::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--accent);
}
.hero-text-panel {
  padding: 6rem 5% 80px 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  padding: 6px 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 28px;
  width: fit-content;
}
.hero-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: blink 2s infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(5rem, 7vw, 10rem);
  font-weight: 700;
  letter-spacing: -3px;
  line-height: 0.85;
  color: var(--text);
  margin-bottom: 20px;
}
.hero-name .line2 {
  color: var(--violet);
  margin-left: 30px;
  display: block;
  font-style: italic;
}
.hero-typed-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
}
.hero-typed-row span.arr {
  color: var(--accent);
}
.hero-desc {
  color: var(--text-dim);
  line-height: 1.8;
  max-width: 480px;
  margin-bottom: 40px;
  font-size: 0.97rem;
  font-weight: 400;
}
.btn-va {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}
.btn-solid {
  background: var(--accent);
  color: var(--bg0);
}
.btn-solid::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--coral);
  transform: translateX(-100%);
  transition: transform var(--transition-smooth) cubic-bezier(.16, 1, .3, 1);
}
.btn-solid:hover::before {
  transform: translateX(0);
}
.btn-solid span {
  position: relative;
  z-index: 1;
}
.btn-line {
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-line:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px var(--accent-glow);
}

.hero-stats {
  display: flex;
  gap: 0;
  margin-top: 52px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.hs-item {
  flex: 1;
  border-right: 1px solid var(--border);
}
.hs-item:last-child {
  border-right: none;
}
.hs-n {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -2px;
  color: var(--accent);
  line-height: 1;
}
.hs-l {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 4px;
}

.hero-socs {
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
}
.hsa {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}
.hsa:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateX(-5px);
  background: var(--accent-dim);
}

/* ── ABOUT ── */
#about {
  background: var(--bg1);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-photo-side {
  position: relative;
}
.about-photo-wrap {
  position: relative;
  display: inline-block;
}
.about-img {
  width: 100%;
  max-width: 440px;
  display: block;
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
  filter: saturate(0.7) contrast(1.1) brightness(0.9);
  transition: filter var(--transition-smooth);
}
.about-img:hover {
  filter: saturate(1) contrast(1.1) brightness(1);
}
.about-photo-wrap::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 15px;
  right: -15px;
  bottom: -15px;
  border: 1px solid var(--accent);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
  opacity: 0.3;
  z-index: -1;
}
.about-photo-wrap::after {
  content: 'NILOY KANTI PAUL';
  position: absolute;
  bottom: -30px;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.2em;
}
.about-headline {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 3rem);
  font-weight: 700;
  letter-spacing: 2px;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 24px;
}
.about-headline .hi {
  color: var(--accent);
}
.about-text {
  color: var(--text-dim);
  line-height: 1.9;
  margin-bottom: 18px;
  font-weight: 400;
  font-size: 0.96rem;
}
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}
.a-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 5px 14px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  letter-spacing: 0.08em;
  cursor: default;
  transition: all var(--transition-fast);
}
.a-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-2px);
}
.info-list {
  border-top: 1px solid var(--border);
}
.info-item {
  display: flex;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition-fast);
}
.info-item:hover {
  padding-left: 10px;
  background: var(--accent-dim);
}
.info-key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.info-val {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
}
.info-val a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.info-val a:hover {
  color: var(--coral);
}
.soc-row {
  display: flex;
  gap: 8px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.soc-btn {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  transition: all var(--transition-fast);
}
.soc-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-3px);
}

/* ── SKILLS ── */
#skills {
  background: var(--bg0);
}
.skills-intro {
  max-width: 600px;
  margin-bottom: 70px;
}
.skills-intro .sec-sub {
  color: var(--text-dim);
  font-size: 0.96rem;
  line-height: 1.8;
  font-weight: 400;
}
.skill-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.skill-cat {
  border: 1px solid var(--border);
  padding: 28px;
  background: var(--bg-card);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}
.skill-cat::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-dim), transparent);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}
.skill-cat:hover {
  border-color: var(--border-h);
  background: var(--bg-card-h);
  transform: translateY(-4px);
  box-shadow: 0 0 20px var(--accent-glow);
}
.skill-cat:hover::before {
  opacity: 1;
}
.skill-cat-icon {
  font-size: 1.6rem;
  margin-bottom: 16px;
}
.skill-cat-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.s-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 5px 12px;
  border: 1px solid var(--border);
  color: var(--text-mid);
  letter-spacing: 0.05em;
  transition: all var(--transition-fast);
  cursor: default;
}
.s-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
  transform: scale(1.05);
}
.skills-ticker {
  overflow: hidden;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 60px 0 0;
  position: relative;
}
.skills-ticker::before,
.skills-ticker::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}
.skills-ticker::before {
  left: 0;
  background: linear-gradient(to right, var(--bg0), transparent);
}
.skills-ticker::after {
  right: 0;
  background: linear-gradient(to left, var(--bg0), transparent);
}
.ticker-track {
  display: flex;
  gap: 40px;
  animation: ticker 30s linear infinite;
  width: max-content;
}
.ticker-item {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  white-space: nowrap;
  transition: color var(--transition-fast);
}
.ticker-item:hover {
  color: var(--accent);
}
.ticker-item .dot {
  width: 3px;
  height: 3px;
  background: var(--accent);
  border-radius: 50%;
}
@keyframes ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ── EXPERIENCE ── */
#experience {
  background: var(--bg1);
}
.exp-container {
  position: relative;
}
.exp-line {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--accent), transparent);
}
.exp-entries {
  padding-left: 40px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.exp-entry {
  position: relative;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition-smooth);
}
.exp-entry:last-child {
  border-bottom: none;
}
.exp-entry::before {
  content: '';
  position: absolute;
  left: -44px;
  top: 46px;
  width: 8px;
  height: 8px;
  background: var(--bg1);
  border: 1px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-glow);
  transition: all var(--transition-fast);
}
.exp-entry:hover::before {
  background: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}
.exp-entry:hover {
  padding-left: 16px;
}
.exp-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}
.exp-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text);
}
.exp-company {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-top: 4px;
}
.exp-company a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.exp-company a:hover {
  color: var(--coral);
}
.exp-badge {
  font-family: var(--font-body);
  font-size: 0.65rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 4px 12px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.exp-type {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.65rem;
  color: var(--coral);
  border: 1px solid rgba(249, 115, 22, 0.2);
  padding: 3px 10px;
  margin-bottom: 14px;
  letter-spacing: 0.1em;
}
.exp-desc {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.8;
  font-weight: 400;
  max-width: 700px;
  margin-bottom: 16px;
}
.exp-techs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.exp-tech {
  font-family: var(--font-body);
  font-size: 0.65rem;
  padding: 3px 10px;
  background: var(--accent-dim);
  border: 1px solid rgba(16, 185, 129, 0.15);
  color: var(--accent);
  letter-spacing: 0.05em;
}

/* ── EDUCATION ── */
#education {
  background: var(--bg0);
}
.edu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--border);
}
.edu-card {
  background: var(--bg0);
  padding: 36px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-smooth);
}
.edu-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--coral));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}
.edu-card:hover::before {
  transform: scaleX(1);
}
.edu-card:hover {
  background: var(--bg1);
  transform: translateY(-2px);
}
.edu-num {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 400;
  font-style: italic;
  letter-spacing: 3px;
  color: rgba(16, 185, 129, 0.06);
  position: absolute;
  right: 20px;
  bottom: -10px;
  line-height: 1;
}
.edu-icon {
  font-size: 1.5rem;
  margin-bottom: 14px;
  display: block;
}
.edu-deg {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 1.5px;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.2;
}
.edu-deg em {
  font-size: 1rem;
}
.edu-sch {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  font-family: var(--font-body);
  transition: color var(--transition-fast);
}
.edu-sch:hover {
  color: var(--coral);
}
.edu-period {
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-top: 10px;
}

/* ── PROJECTS ── */
#projects {
  background: var(--bg1);
}
.projects-container {
  max-width: 1400px;
  margin: 0 auto;
}
.project-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
  justify-content: left;
}
.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 8px 20px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  background: none;
  cursor: pointer;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  border-radius: 25px;
}
.filter-btn.active,
.filter-btn:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition-smooth);
  position: relative;
  display: flex;
  flex-direction: column;
  will-change: transform;
  opacity: 0;
  transform: translateY(30px) scale(0.95);
}
.project-card.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.project-card:nth-child(1) { transition-delay: 0.05s; }
.project-card:nth-child(2) { transition-delay: 0.1s; }
.project-card:nth-child(3) { transition-delay: 0.15s; }
.project-card:nth-child(4) { transition-delay: 0.2s; }
.project-card:nth-child(5) { transition-delay: 0.25s; }
.project-card:nth-child(6) { transition-delay: 0.3s; }
.project-card:hover {
  border-color: var(--border-h);
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 20px var(--accent-glow);
}
.project-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg3);
}
.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth) ease;
}
.project-card:hover .project-img {
  transform: scale(1.05);
}
.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 39, .8);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  transition: opacity var(--transition-smooth);
}
.project-card:hover .project-overlay {
  opacity: 1;
}
.project-link-btn {
  width: 44px;
  height: 44px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg0);
  text-decoration: none;
  font-size: 1rem;
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}
.project-link-btn:hover {
  transform: scale(1.1);
  background: var(--coral);
}
.project-info {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.project-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.project-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 6px;
  padding: 3px 10px;
}
.project-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.project-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.6;
  flex: 1;
}

/* ── CASE STUDIES ── */
#case-studies {
  background: var(--bg0);
}
.cs-intro {
  max-width: 650px;
  margin-bottom: 20px;
}
.cs-intro p {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.8;
  font-weight: 400;
}
.cs-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 56px;
  margin-top: 24px;
}
.cs-fbtn {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 8px 20px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  background: none;
  cursor: pointer;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  border-radius: 25px;
}
.cs-fbtn.on,
.cs-fbtn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-2px);
}
.cs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 24px;
}
.cs-card {
  border: 1px solid var(--border);
  background: var(--bg-card);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-smooth);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}
.cs-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 1px solid var(--accent);
  transform: scale(0);
  transition: all var(--transition-smooth);
}
.cs-card:hover::after {
  transform: scale(1);
}
.cs-card:hover {
  border-color: var(--border-h);
  transform: translateY(-6px);
  box-shadow: 0 0 20px var(--accent-glow);
  background: var(--bg-card-h);
}
.cs-card-header {
  padding: 28px 28px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}
.cs-industry {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--coral);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border: 1px solid rgba(249, 115, 22, 0.2);
  padding: 3px 10px;
}
.cs-number {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 800;
  color: var(--border);
  letter-spacing: 2px;
  line-height: 1;
  user-select: none;
}
.cs-card-body {
  padding: 16px 28px 28px;
}
.cs-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.3;
}
.cs-desc {
  color: var(--text-dim);
  font-size: 0.86rem;
  line-height: 1.7;
  font-weight: 400;
  margin-bottom: 20px;
}
.cs-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.cs-tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  padding: 3px 9px;
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.cs-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: all var(--transition-fast);
}
.cs-link:hover {
  color: var(--coral);
}
.cs-card-glow {
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-smooth);
}
.cs-card:hover .cs-card-glow {
  opacity: 0.6;
}

/* ── PUBLICATIONS ── */
#publications {
  background: var(--bg1);
}
.pub-list {
  max-width: 100%;
}
.pub-item {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
  transition: all var(--transition-fast);
}
.pub-item:first-child {
  border-top: 1px solid var(--border);
}
.pub-item:hover {
  padding-left: 12px;
  background: var(--accent-dim);
}
.pub-n {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 400;
  font-style: italic;
  color: rgba(16, 185, 129, 0.1);
  line-height: 1;
}
.pub-venue {
  font-family: var(--font-body);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.pub-ttl {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  font-style: italic;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.3;
}
.pub-meta {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.6;
}
.pub-acts {
  display: flex;
  gap: 8px;
}
.pab {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  background: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: 50%;
}
.pab:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
  transform: scale(1.1);
}

/* ── CERTIFICATIONS ── */
#certifications {
  background: var(--bg0);
}
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.cert-card {
  border: 1px solid var(--border);
  background: var(--bg-card);
  padding: 24px;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  border-radius: 8px;
}
.cert-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 12px 12px 0;
  border-color: transparent var(--accent) transparent transparent;
}
.cert-card:hover {
  border-color: var(--border-h);
  background: var(--bg-card-h);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-4px);
}
.cert-issuer {
  font-family: var(--font-body);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.cert-name {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text);
  margin-bottom: 6px;
}
.cert-id {
  font-family: var(--font-body);
  font-size: 0.65rem;
  color: var(--text-dim);
}
.cert-view-btn {
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--accent);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  letter-spacing: 0.1em;
  transition: all var(--transition-fast);
}
.cert-view-btn:hover {
  color: var(--coral);
}
.cert-more-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: var(--accent);
  background: none;
  border: 1px solid var(--border);
  padding: 12px 24px;
  cursor: pointer;
  letter-spacing: 0.1em;
  transition: all var(--transition-fast);
  position: relative;
  z-index: 1;
  border-radius: 25px;
}
.cert-more-btn:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-2px);
}

/* ── CONTACT ── */
#contact {
  background: var(--bg1);
}
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 80px;
  align-items: start;
}
.cg-ttl {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 6rem);
  font-weight: 700;
  font-style: italic;
  line-height: 0.9;
  margin-bottom: 24px;
}
.cg-ttl .gd {
  display: block;
  color: var(--accent);
}
.cg-note {
  font-size: 0.94rem;
  line-height: 1.88;
  color: var(--text-dim);
  margin-bottom: 28px;
}
.ci-list {
  display: flex;
  flex-direction: column;
}
.ci {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: all var(--transition-fast);
  border-radius: 8px;
}
.ci:first-child {
  border-top: 1px solid var(--border);
}
.ci:hover {
  padding-left: 20px;
  background: var(--accent-dim);
  transform: translateX(5px);
}
.ci-icon {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.85rem;
  flex-shrink: 0;
  transition: all var(--transition-fast);
  border-radius: 50%;
}
.ci:hover .ci-icon {
  background: var(--accent-dim);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: scale(1.1);
}
.ci-type {
  font-family: var(--font-body);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 2px;
}
.ci-val {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 400;
}
.cf-glass {
  background: rgba(15, 20, 51, 0.78);
  border: 1px solid rgba(16, 185, 129, 0.2);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  padding: 40px;
  position: relative;
  overflow: hidden;
  border-radius: 16px;
}
.cf-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.cf-h {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  font-style: italic;
  color: var(--text);
  margin-bottom: 28px;
}
.cf-h span {
  color: var(--accent);
}
.cf-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.cf-f {
  position: relative;
  margin-bottom: 16px;
}
.cf-i,
.cf-ta {
  width: 100%;
  background: rgba(10, 14, 39, 0.6);
  border: 1px solid rgba(16, 185, 129, 0.1);
  border-bottom: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 22px 14px 8px;
  outline: none;
  transition: all var(--transition-fast);
  -webkit-appearance: none;
  resize: none;
  border-radius: 8px;
}
.cf-i:focus,
.cf-ta:focus {
  border-color: rgba(16, 185, 129, 0.4);
  border-bottom-color: var(--accent);
  background: rgba(10, 14, 39, 0.85);
}
.cf-ta {
  padding-top: 28px;
  min-height: 120px;
}
.cf-lbl {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  pointer-events: none;
  transition: all var(--transition-smooth) cubic-bezier(.16, 1, .3, 1);
}
.cf-ta ~ .cf-lbl {
  top: 20px;
  transform: none;
}
.cf-i:focus ~ .cf-lbl,
.cf-i:not(:placeholder-shown) ~ .cf-lbl {
  top: 8px;
  transform: none;
  font-size: 0.56rem;
  color: var(--accent);
}
.cf-ta:focus ~ .cf-lbl,
.cf-ta:not(:placeholder-shown) ~ .cf-lbl {
  top: 8px;
  font-size: 0.56rem;
  color: var(--accent);
}
.cf-sub {
  width: 100%;
  margin-top: 20px;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  cursor: pointer;
  padding: 15px 24px;
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 25px;
}
.cf-sub::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateY(100%);
  transition: transform var(--transition-smooth) cubic-bezier(.16, 1, .3, 1);
}
.cf-sub:hover {
  color: var(--bg0);
  box-shadow: 0 8px 32px var(--accent-glow);
  transform: translateY(-2px);
}
.cf-sub:hover::before {
  transform: translateY(0);
}
.cf-sub span {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}
.cf-ok {
  display: none;
  text-align: center;
  padding: 28px;
}
.cf-ok i {
  font-size: 2.2rem;
  color: var(--accent);
  margin-bottom: 12px;
  display: block;
}
.cf-ok p {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--text);
}

/* ── FOOTER ── */
footer {
  background: var(--bg0);
  border-top: 2px solid var(--accent);
  position: relative;
  overflow: hidden;
}
.ft-marquee {
  overflow: hidden;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.ft-marquee-track {
  display: flex;
  gap: 0;
  animation: ticker 18s linear infinite;
  width: max-content;
}
.ft-m-item {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-dim);
  padding: 0 36px;
  border-right: 1px solid var(--border);
  transition: color var(--transition-fast);
  cursor: default;
  white-space: nowrap;
}
.ft-m-item:hover {
  color: var(--accent);
}
.ft-top {
  padding: 64px 5%;
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
}
.ft-logo {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -1.5px;
  color: var(--text);
}
.ft-logo .hi {
  color: var(--accent);
}
.ft-tagline {
  color: var(--text-dim);
  font-size: 0.84rem;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 270px;
}
.ft-socs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.ft-soc {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
  border-radius: 50%;
}
.ft-soc:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
  transform: translateY(-4px);
}
.ft-col-t {
  font-family: var(--font-body);
  font-size: 0.63rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.ft-ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ft-ul a {
  text-decoration: none;
  color: var(--text-dim);
  font-size: 0.85rem;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 7px;
}
.ft-ul a::before {
  content: '→';
  font-size: 0.7rem;
  opacity: 0;
  transition: var(--transition-fast);
  color: var(--accent);
}
.ft-ul a:hover {
  color: var(--text);
  padding-left: 4px;
}
.ft-ul a:hover::before {
  opacity: 1;
}
.ft-bot {
  padding: 22px 5%;
  max-width: 1400px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.ft-copy {
  font-family: var(--font-body);
  font-size: 0.63rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.ft-dots-row {
  display: flex;
  gap: 6px;
  align-items: center;
}
.ft-glow-dot {
  width: 8px;
  height: 8px;
  background: var(--border-dot);
  border-radius: 50%;
  transition: all var(--transition-fast);
  cursor: default;
  animation: dotPulse 3s ease-in-out infinite;
}
.ft-glow-dot:nth-child(1) { animation-delay: 0s; }
.ft-glow-dot:nth-child(2) { animation-delay: 0.2s; }
.ft-glow-dot:nth-child(3) { animation-delay: 0.4s; }
.ft-glow-dot:nth-child(4) { animation-delay: 0.6s; }
.ft-glow-dot:nth-child(5) { animation-delay: 0.8s; }
.ft-glow-dot:nth-child(6) { animation-delay: 1s; }
.ft-glow-dot:nth-child(7) { animation-delay: 1.2s; }
.ft-glow-dot:hover {
  animation-play-state: paused;
  background: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: scale(1.8);
  opacity: 1;
}
@keyframes dotPulse {
  0%, 100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
  }
}

/* ── SCROLL TO TOP ── */
.stb {
  position: fixed;
  bottom: 40px;
  right: 5%;
  width: 44px;
  height: 44px;
  background: var(--accent);
  border: none;
  color: var(--bg0);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all var(--transition-smooth);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  font-weight: 700;
  border-radius: 50%;
}
.stb.on {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.stb:hover {
  transform: translateY(-4px);
  background: var(--coral);
}

/* ── VIDEO MODAL ── */
.vmod {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .94);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
}
.vmod.open {
  display: flex;
}
.vmod-box {
  position: relative;
  width: 90%;
  max-width: 900px;
  aspect-ratio: 16 / 9;
}
.vmod-close {
  position: absolute;
  top: -46px;
  right: 0;
  background: none;
  border: 1px solid rgba(255, 255, 255, .3);
  color: #fff;
  font-size: 0.75rem;
  cursor: pointer;
  padding: 6px 18px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  border-radius: 25px;
}
.vmod-close:hover {
  background: rgba(255, 255, 255, .1);
}

/* ── CERTIFICATE MODAL ── */
.cert-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .94);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(15px);
}
.cert-modal.open {
  display: flex;
}
.cert-modal-box {
  position: relative;
  max-width: 80%;
  max-height: 85vh;
  background: var(--bg1);
  border: 1px solid var(--accent);
  border-radius: 12px;
  overflow: hidden;
}
.cert-modal-img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  display: block;
}
.cert-modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--bg0);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 0.75rem;
  cursor: pointer;
  padding: 6px 18px;
  letter-spacing: 0.12em;
  border-radius: 25px;
  transition: all var(--transition-fast);
}
.cert-modal-close:hover {
  background: var(--accent);
  color: var(--bg0);
}

/* ── RESPONSIVE ── */
@media (max-width: 1200px) {
  .max { padding: 0 3%; }
  .sec-title { font-size: clamp(2rem, 6vw, 4rem); }
}
@media (max-width: 992px) {
  .about-grid,
  .contact-wrap { grid-template-columns: 1fr; gap: 40px; }
  .edu-grid { grid-template-columns: 1fr; }
  .ft-top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .cs-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hbtn { display: flex; }
  section { padding: 80px 3%; }
  #hero { grid-template-columns: 1fr; padding-top: 100px; min-height: auto; }
  .hero-img-panel { display: none; }
  .hero-text-panel { padding: 8rem 5%; }
  .hs-item { border-right: none; padding: 10px 0 !important; text-align: center; }
  .hero-socs { display: none; }
  .sec-title { font-size: clamp(1.8rem, 8vw, 3rem); }
  .skill-categories { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .ft-top { grid-template-columns: 1fr; gap: 30px; }
  .cf-row { grid-template-columns: 1fr; }
  .pub-item { grid-template-columns: 1fr; gap: 15px; }
  .pub-n { display: none; }
  .about-photo-wrap { margin: 0 auto; }
  .exp-entries { padding-left: 20px; }
  .exp-entry::before { left: -24px; }
  .cg-ttl { font-size: clamp(2rem, 10vw, 4rem); }
}
@media (max-width: 480px) {
  section { padding: 60px 5%; }
  .hero-text-panel { padding: 6rem 5%; }
  .sec-title { font-size: clamp(1.5rem, 10vw, 2.5rem); }
  .btn-va { padding: 12px 24px; font-size: 0.75rem; }
  .filter-btn,
  .cs-fbtn { padding: 6px 15px; font-size: 0.6rem; }
  .cert-modal-box { max-width: 95%; }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}
.gpu-accelerated {
  transform: translateZ(0);
  backface-visibility: hidden;
  perspective: 1000px;
}
img {
  image-rendering: -webkit-optimize-contrast;
}