/* ============================================================
   ACADEMIC PORTFOLIO v4 — styles.css
   Aesthetic: Structured Editorial Grid · 2025
   Fonts: Fraunces (display) + Outfit (body) + JetBrains Mono (tags)
   Palette: Deep navy #0f2d6b + Amber #e8a020 + Warm white #fafaf8
============================================================ */

:root {
  /* Colors */
  --ink:          #111827;
  --ink-mid:      #374151;
  --ink-soft:     #6B7280;
  --ink-faint:    #9CA3AF;

  --bg:           #ffffff;
  --bg-warm:      #fafaf8;
  --bg-tint:      #f3f4f6;
  --rule:         #E5E7EB;
  --rule-warm:    #e8e4dc;

  --navy:         #0f2d6b;
  --navy-mid:     #1a3f87;
  --navy-light:   #e8eef8;
  --navy-rule:    #c3d0ea;

  --amber:        #e8a020;
  --amber-light:  #fef3d9;
  --amber-dark:   #a06d0f;

  --green:        #166534;
  --green-light:  #dcfce7;
  --green-rule:   #86efac;

  --award-bg:     #fdf5e4;
  --award-rule:   #dbb968;
  --award-text:   #7a4f00;

  /* Type */
  --ff-display: 'Fraunces', Georgia, serif;
  --ff-body:    'Outfit', system-ui, sans-serif;
  --ff-mono:    'JetBrains Mono', 'Courier New', monospace;

  /* Layout */
  --max-w:    1060px;
  --nav-h:    62px;
  --r:        8px;
  --r-lg:     14px;
  --r-xl:     20px;

  /* Easing */
  --ease:     cubic-bezier(0.22, 1, 0.36, 1);
}

/* ── RESET & BASE ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--ff-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { display: block; max-width: 100%; }
a { color: var(--navy); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--navy-mid); }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── LAYOUT ────────────────────────────────────────────────── */
.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── ANIMATION ENGINE ──────────────────────────────────────── */
[data-aos] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-aos].aos-in {
  opacity: 1;
  transform: translateY(0);
}
[data-aos-delay="80"]  { transition-delay: 80ms; }
[data-aos-delay="100"] { transition-delay: 100ms; }
[data-aos-delay="120"] { transition-delay: 120ms; }
[data-aos-delay="140"] { transition-delay: 140ms; }
[data-aos-delay="200"] { transition-delay: 200ms; }
[data-aos-delay="260"] { transition-delay: 260ms; }
[data-aos-delay="300"] { transition-delay: 300ms; }
[data-aos-delay="340"] { transition-delay: 340ms; }
[data-aos-delay="380"] { transition-delay: 380ms; }

/* ── NAVIGATION ────────────────────────────────────────────── */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px) saturate(180%);
  border-bottom: 1px solid var(--rule);
  z-index: 200;
  transition: box-shadow 0.3s;
}
.nav.is-scrolled { box-shadow: 0 2px 20px rgba(15,45,107,0.08); }
.nav-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--ff-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.02em;
}
.nav-logo:hover { color: var(--navy-mid); }
.nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav-list a {
  font-family: var(--ff-body);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  transition: all 0.18s;
}
.nav-list a:hover { color: var(--navy); background: var(--navy-light); }
.nav-list a.nav-cta {
  background: var(--navy);
  color: white;
  margin-left: 0.5rem;
}
.nav-list a.nav-cta:hover { background: var(--navy-mid); color: white; }
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-burger span { display: block; width: 22px; height: 1.5px; background: var(--ink); transition: all 0.25s; }

/* ── SECTION ATOMS ─────────────────────────────────────────── */
.section { padding: 5rem 0; }
.section-tint { background: var(--bg-warm); }
.eyebrow {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 0.7rem;
}
.eyebrow-light { color: rgba(255,255,255,0.6); }
.section-h {
  font-family: var(--ff-display);
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 1.25rem;
  letter-spacing: -0.015em;
}
.section-head {
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
}
.section-more {
  font-size: 0.85rem;
  color: var(--navy);
  margin-top: 0.25rem;
  align-self: flex-start;
}
.section-more:hover { text-decoration: underline; }
.card-label {
  font-family: var(--ff-mono);
  font-size: 0.67rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
}

/* ── BUTTONS ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.58rem 1.3rem;
  border-radius: var(--r);
  font-family: var(--ff-body);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--navy);
  color: white;
  border: 1.5px solid var(--navy);
  box-shadow: 0 2px 12px rgba(15,45,107,0.18);
}
.btn-primary:hover {
  background: var(--navy-mid);
  border-color: var(--navy-mid);
  color: white;
  box-shadow: 0 4px 20px rgba(15,45,107,0.25);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1.5px solid var(--rule);
}
.btn-ghost:hover {
  border-color: var(--navy-rule);
  background: var(--navy-light);
  color: var(--navy);
  transform: translateY(-1px);
}

/* ══════════════════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════════════════ */
.hero {
  min-height: 100svh;
  padding-top: var(--nav-h);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--bg);
}

/* Dot-grid background */
.hero-dotgrid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, #CBD5E1 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.45;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

/* Soft color blobs */
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-blob-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(15,45,107,0.06), transparent 70%);
  top: -10%; right: -5%;
}
.hero-blob-2 {
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(232,160,32,0.07), transparent 70%);
  bottom: 5%; left: -5%;
}

.hero-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem 2rem;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

/* Photo column */
.hero-photo-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}
.hero-photo-ring {
  padding: 4px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, var(--navy) 0%, var(--amber) 40%, var(--navy) 100%);
}

.hero-photo-frame {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 4px solid white;
  position: relative;
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
  border-radius: 50%;
}
.hero-initials {
  display: none;
  align-items: center;
  justify-content: center;
  font-family: var(--ff-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--navy);
  opacity: 0.3;
  position: absolute;
  inset: 0;
}

.hero-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--green);
  background: var(--green-light);
  border: 1px solid var(--green-rule);
  padding: 0.4rem 0.9rem;
  border-radius: 100px;
}
.hero-badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(0.85)} }

/* Hero text */
.hero-text-col { display: flex; flex-direction: column; gap: 0; }

.hero-label {
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 0.75rem;
}
.hero-name {
  font-family: var(--ff-display);
  font-size: clamp(2.4rem, 5.5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--ink);
  letter-spacing: -0.025em;
  margin-bottom: 1.1rem;
}
.hero-name em {
  font-style: italic;
  font-weight: 300;
  color: var(--navy);
}

.hero-specs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 1.25rem;
  font-size: 0.83rem;
  color: var(--ink-soft);
}
.hero-specs span {
  font-weight: 500;
  color: var(--ink-mid);
}
.hero-specs i { color: var(--amber); font-style: normal; font-weight: 700; }

.hero-statement {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--ink-mid);
  margin-bottom: 0.9rem;
  max-width: 54ch;
}
.hero-statement strong { color: var(--ink); font-weight: 600; }

.hero-affil {
  font-size: 0.84rem;
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
}
.hero-fellow {
  display: inline-block;
  font-size: 0.76rem;
  color: var(--amber-dark);
  background: var(--amber-light);
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  margin-left: 0.25rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1.5rem;
}

.hero-social {
  display: flex;
  gap: 0.5rem;
}
.hero-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  color: var(--ink-soft);
  transition: all 0.2s;
}
.hero-social a:hover { border-color: var(--navy-rule); background: var(--navy-light); color: var(--navy); transform: translateY(-2px); }
.hero-social a svg { width: 16px; height: 16px; }

/* ══════════════════════════════════════════════════════════════
   ABOUT
══════════════════════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 4rem;
  align-items: start;
}
.about-left p {
  font-size: 0.97rem;
  color: var(--ink-mid);
  margin-bottom: 0.9rem;
}
.about-left p strong { color: var(--ink); }

.about-right { display: flex; flex-direction: column; gap: 1.25rem; }

.info-card {
  background: var(--bg-warm);
  border: 1px solid var(--rule-warm);
  border-radius: var(--r-lg);
  padding: 1.5rem;
}
.edu-row {
  display: flex;
  gap: 0.85rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
}
.edu-row:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
.edu-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 0.1rem; }
.edu-deg { font-size: 0.88rem; font-weight: 600; color: var(--ink); margin-bottom: 0.1rem; }
.edu-school { font-size: 0.8rem; color: var(--ink-soft); }
.edu-note { font-size: 0.78rem; color: var(--ink-faint); font-style: italic; margin-top: 0.2rem; }

.interest-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.interest-grid span {
  font-size: 0.78rem;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--rule-warm);
  border-radius: 100px;
  color: var(--ink-mid);
  background: var(--bg);
  transition: all 0.18s;
}
.interest-grid span:hover { border-color: var(--navy-rule); background: var(--navy-light); color: var(--navy); }

/* ══════════════════════════════════════════════════════════════
   PUBLICATIONS
══════════════════════════════════════════════════════════════ */
.pub-list { display: flex; flex-direction: column; gap: 0; }

.pub-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 0 1.75rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--rule);
  transition: background 0.18s;
}
.pub-card:first-child { border-top: 1px solid var(--rule); }
.pub-card:hover { background: var(--bg-tint); margin: 0 -1.5rem; padding: 1.4rem 1.5rem; border-radius: var(--r); }
.pub-card-award { background: var(--award-bg); }
.pub-card-award { border-top-color: var(--award-rule); border-bottom-color: var(--award-rule); }

.pub-left { display: flex; flex-direction: column; align-items: flex-start; gap: 0.4rem; padding-top: 0.1rem; }
.pub-year { font-family: var(--ff-mono); font-size: 0.75rem; font-weight: 500; color: var(--ink-faint); }
.pub-venue-wrap { display: flex; flex-direction: column; gap: 0.3rem; }
.pub-venue {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.18rem 0.5rem;
  border-radius: 4px;
  text-align: center;
}
.pub-venue.journal { background: var(--navy-light); color: var(--navy); }
.pub-venue.conf    { background: var(--bg-tint); color: var(--ink-mid); border: 1px solid var(--rule); }
.pub-rank { font-size: 0.66rem; text-align: center; color: var(--navy); background: var(--navy-light); border-radius: 4px; padding: 0.1rem 0.35rem; font-family: var(--ff-mono); }
.pub-award-tag { font-size: 0.66rem; text-align: center; color: var(--award-text); background: rgba(122,79,0,0.08); border-radius: 4px; padding: 0.1rem 0.35rem; font-family: var(--ff-mono); }

.pub-body h3 { font-family: var(--ff-display); font-size: 1rem; font-weight: 600; color: var(--ink); margin-bottom: 0.3rem; line-height: 1.4; }
.pub-body h3 a { color: var(--ink); }
.pub-body h3 a:hover { color: var(--navy); }
.pub-authors { font-size: 0.82rem; color: var(--ink-soft); margin-bottom: 0.3rem; }
.pub-authors strong { color: var(--ink-mid); }
.pub-note { font-size: 0.8rem; color: var(--ink-faint); font-style: italic; }

/* ══════════════════════════════════════════════════════════════
   PROJECTS
══════════════════════════════════════════════════════════════ */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.proj-card {
  border: 1px solid var(--rule);
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--bg);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s var(--ease);
}
.proj-card:hover {
  border-color: var(--navy-rule);
  box-shadow: 0 8px 32px rgba(15,45,107,0.1);
  transform: translateY(-3px);
}
.proj-featured {
  border-color: var(--navy-rule);
  background: linear-gradient(160deg, var(--navy-light) 0%, var(--bg) 50%);
}

/* Project image area */
.proj-img {
  height: 160px;
  position: relative;
  overflow: hidden;
}
.proj-img-inner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.proj-img-label {
  position: absolute;
  bottom: 10px;
  right: 14px;
  font-family: var(--ff-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: white;
  background: rgba(0,0,0,0.35);
  padding: 0.2rem 0.55rem;
  border-radius: 100px;
  backdrop-filter: blur(4px);
}

/* CSS Art: CARE-AI (neural nodes) */
.proj-img-care { background: linear-gradient(135deg, #0f2d6b 0%, #1a3f87 50%, #0d2558 100%); }
.art-nodes { position: absolute; inset: 0; }
.node {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.85);
}
.n1 { width:14px;height:14px;left:20%;top:30%; }
.n2 { width:10px;height:10px;left:18%;top:65%; }
.n3 { width:18px;height:18px;left:42%;top:20%; }
.n4 { width:12px;height:12px;left:45%;top:70%; }
.n5 { width:16px;height:16px;left:68%;top:30%; }
.n6 { width:10px;height:10px;left:72%;top:68%; }
.line {
  position: absolute;
  background: rgba(255,255,255,0.2);
  height: 1.5px;
  transform-origin: left center;
}
.l1 { left:27%;top:38%;width:18%;transform:rotate(35deg); }
.l2 { left:27%;top:38%;width:22%;transform:rotate(-10deg); }
.l3 { left:48%;top:26%;width:22%;transform:rotate(10deg); }
/* Animated glow dots */
.art-nodes::after {
  content:'';
  position:absolute;
  width:60px;height:60px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(232,160,32,0.4),transparent 70%);
  left:60%;top:40%;
  animation:glow 3s ease-in-out infinite;
}
@keyframes glow{0%,100%{opacity:0.6;transform:scale(1)}50%{opacity:1;transform:scale(1.3)}}

/* CSS Art: NemoForge (3D grid) */
.proj-img-nemo { background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f2d6b 100%); }
.art-grid3d { position:absolute;inset:0;perspective:300px; }
.g3-plane {
  position:absolute;
  bottom:25%;left:15%;right:15%;height:2px;
  background:rgba(255,255,255,0.15);
  transform:rotateX(70deg);
  box-shadow:0 0 30px rgba(15,45,107,0.5);
}
.g3-box {
  position:absolute;
  border:1.5px solid rgba(255,255,255,0.35);
  border-radius:3px;
}
.b1{width:40px;height:30px;left:22%;top:30%;background:rgba(232,160,32,0.15);transform:perspective(200px) rotateX(-15deg);}
.b2{width:30px;height:40px;left:48%;top:25%;background:rgba(255,255,255,0.06);transform:perspective(200px) rotateX(-15deg);}
.b3{width:45px;height:25px;left:62%;top:35%;background:rgba(15,45,107,0.4);transform:perspective(200px) rotateX(-15deg);}

/* CSS Art: BCI (brain rings) */
.proj-img-bci { background: linear-gradient(135deg, #0a1628 0%, #112244 100%); }
.art-brain { position:absolute;inset:0;display:flex;align-items:center;justify-content:center; }
.brain-ring {
  position:absolute;
  border-radius:50%;
  border:1.5px solid rgba(232,160,32,0.3);
}
.r1 { width:90px;height:90px; animation:expand 3s ease-in-out infinite; }
.r2 { width:130px;height:130px; animation:expand 3s ease-in-out 0.5s infinite; }
.r3 { width:170px;height:170px; animation:expand 3s ease-in-out 1s infinite; }
@keyframes expand{0%,100%{opacity:0.6;transform:scale(1)}50%{opacity:0.2;transform:scale(1.05)}}
.brain-dot { position:absolute;border-radius:50%;background:rgba(232,160,32,0.9); }
.d1{width:8px;height:8px;left:48%;top:35%;}
.d2{width:6px;height:6px;left:35%;top:52%;}
.d3{width:7px;height:7px;left:60%;top:56%;}

/* CSS Art: VR (headset) */
.proj-img-vr { background: linear-gradient(135deg, #1e3a5f 0%, #0f2d6b 100%); }
.art-vr { position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column; }
.vr-headset {
  width:80px;height:40px;
  background:rgba(255,255,255,0.15);
  border:2px solid rgba(255,255,255,0.4);
  border-radius:16px;
  position:relative;
  z-index:2;
}
.vr-headset::before,
.vr-headset::after {
  content:'';
  position:absolute;
  top:50%;transform:translateY(-50%);
  width:22px;height:22px;
  background:rgba(232,160,32,0.5);
  border-radius:50%;
}
.vr-headset::before{left:8px;}
.vr-headset::after{right:8px;}
.vr-wave {
  position:absolute;
  border-radius:50%;
  border:1px solid rgba(255,255,255,0.12);
  pointer-events:none;
}
.w1{width:100px;height:100px;}
.w2{width:140px;height:140px;}
.w3{width:180px;height:180px;}

/* CSS Art: Point cloud */
.proj-img-lidar { background: linear-gradient(135deg, #0d1b2a 0%, #1b263b 100%); }
.art-pointcloud { position:absolute;inset:0; }
.pc-dot {
  position:absolute;
  width:5px;height:5px;
  border-radius:50%;
  background:rgba(232,160,32,0.85);
  animation:twinkle 2s ease-in-out infinite;
}
.pc-dot:nth-child(even) { background:rgba(255,255,255,0.7);width:3px;height:3px; animation-delay:0.5s; }
.pc-dot:nth-child(3n) { background:rgba(100,180,255,0.7);animation-delay:1s; }
@keyframes twinkle{0%,100%{opacity:0.8}50%{opacity:0.3}}

/* CSS Art: Viewport */
.proj-img-kit { background: linear-gradient(135deg, #1a1a2e 0%, #0f2d6b 100%); }
.art-viewport { position:absolute;inset:0;display:flex;align-items:center;justify-content:center; }
.vp-screen {
  width:110px;height:70px;
  border:2px solid rgba(255,255,255,0.4);
  border-radius:6px;
  background:rgba(255,255,255,0.05);
  position:relative;
}
.vp-screen::before {
  content:'';
  position:absolute;
  inset:6px;
  background:linear-gradient(135deg,rgba(232,160,32,0.3),rgba(15,45,107,0.3));
  border-radius:3px;
}
.vp-cam {
  width:18px;height:18px;
  border-radius:50%;
  border:2px solid rgba(255,255,255,0.6);
  position:absolute;
  left:22%;
  top:40%;
  transform:translateY(-50%);
}
.vp-arrow {
  width:30px;height:2px;
  background:rgba(255,255,255,0.4);
  position:absolute;
  left:32%;top:50%;
  transform:translateY(-50%);
}
.vp-arrow::after{content:'';position:absolute;right:0;top:50%;transform:translateY(-50%) scaleY(0.7);border-left:8px solid rgba(255,255,255,0.6);border-top:5px solid transparent;border-bottom:5px solid transparent;}

/* Project card body */
.proj-body { padding: 1.25rem 1.4rem 1.4rem; }
.proj-tags { display:flex;flex-wrap:wrap;gap:0.35rem;margin-bottom:0.65rem; }
.ptag {
  font-family:var(--ff-mono);
  font-size:0.63rem;
  letter-spacing:0.07em;
  padding:0.12rem 0.45rem;
  border-radius:4px;
  border:1px solid var(--rule);
  color:var(--ink-soft);
  background:var(--bg-warm);
}
.ptag.accent { background:var(--navy-light);border-color:var(--navy-rule);color:var(--navy); }
.ptag.green  { background:var(--green-light);border-color:var(--green-rule);color:var(--green); }
.proj-body h3 { font-family:var(--ff-display);font-size:1.1rem;font-weight:600;color:var(--ink);margin-bottom:0.2rem; }
.proj-sub { font-size:0.78rem;color:var(--ink-soft);font-style:italic;margin-bottom:0.7rem; }
.proj-desc { font-size:0.88rem;color:var(--ink-mid);line-height:1.65;margin-bottom:0.85rem; }
.proj-stack { display:flex;flex-wrap:wrap;gap:0.3rem;margin-bottom:0.65rem; }
.proj-stack span {
  font-family:var(--ff-mono);font-size:0.65rem;
  color:var(--ink-soft);background:var(--bg-tint);
  border:1px solid var(--rule);
  padding:0.12rem 0.45rem;border-radius:4px;
}
.proj-venue { font-size:0.78rem;color:var(--navy);font-weight:500; }

/* ══════════════════════════════════════════════════════════════
   EXPERIENCE
══════════════════════════════════════════════════════════════ */
.exp-cols {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 3.5rem;
  align-items: start;
}

/* Timeline */
.exp-timeline { position:relative;padding-left:1.75rem; }
.exp-timeline::before {
  content:'';position:absolute;left:0;top:8px;bottom:8px;
  width:1.5px;background:var(--rule);
}
.exp-item { position:relative;margin-bottom:2rem; }
.exp-item:last-child { margin-bottom:0; }
.exp-dot {
  position:absolute;left:-1.75rem;top:6px;
  width:14px;height:14px;border-radius:50%;
  background:var(--bg);border:2px solid var(--navy);
  z-index:1;
  transform:translateX(-6px);
}
.exp-when {
  font-family:var(--ff-mono);font-size:0.68rem;
  color:var(--navy);letter-spacing:0.07em;
  display:block;margin-bottom:0.3rem;
}
.exp-content h4 { font-size:0.95rem;font-weight:600;color:var(--ink);margin-bottom:0.15rem; }
.exp-content p { font-size:0.84rem;color:var(--ink-soft); }
.exp-note { font-size:0.78rem;color:var(--ink-faint);margin-top:0.25rem;line-height:1.5; }

/* Skill, award, service cards */
.exp-side { display:flex;flex-direction:column;gap:1.25rem; }

.skill-card, .award-card, .service-card {
  background:var(--bg);
  border:1px solid var(--rule);
  border-radius:var(--r-lg);
  padding:1.4rem;
}
.skill-group { margin-bottom:0.9rem; }
.skill-group:last-child { margin-bottom:0; }
.sk-cat {
  font-family:var(--ff-mono);font-size:0.66rem;
  letter-spacing:0.12em;text-transform:uppercase;
  color:var(--navy);margin-bottom:0.4rem;
}
.sk-tags { display:flex;flex-wrap:wrap;gap:0.3rem; }
.sk-tags span {
  font-size:0.75rem;padding:0.22rem 0.6rem;
  border:1px solid var(--rule);border-radius:5px;
  color:var(--ink-mid);background:var(--bg-warm);
  transition:all 0.18s;
}
.sk-tags span:hover{border-color:var(--navy-rule);background:var(--navy-light);color:var(--navy);}

.award-row { display:flex;align-items:flex-start;gap:0.75rem;margin-bottom:0.8rem; }
.award-row:last-child { margin-bottom:0; }
.award-row span:first-child { font-size:1rem;flex-shrink:0;margin-top:0.1rem; }
.award-row strong { font-size:0.88rem;color:var(--ink); }
.award-row small { font-size:0.76rem;color:var(--ink-faint); }

.svc-row { display:flex;gap:0.75rem;margin-bottom:0.65rem;font-size:0.84rem;color:var(--ink-mid); }
.svc-row:last-child { margin-bottom:0; }
.svc-lbl {
  flex-shrink:0;width:70px;
  font-family:var(--ff-mono);font-size:0.64rem;
  letter-spacing:0.1em;text-transform:uppercase;
  color:var(--navy);padding-top:0.15rem;
}

/* ══════════════════════════════════════════════════════════════
   VISION
══════════════════════════════════════════════════════════════ */
.vision-section {
  background: var(--navy);
  padding: 5rem 0;
}
.vision-inner { max-width: 720px; }
.vision-h {
  font-family: var(--ff-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: white;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}
.vision-body {
  font-size: 1rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.8;
  margin-bottom: 1rem;
}
.vision-body em { font-style: italic; color: var(--amber); }
.vision-keywords {
  display:flex;flex-wrap:wrap;gap:0.5rem;
  margin-top:1.75rem;
}
.vision-keywords span {
  font-family:var(--ff-mono);font-size:0.7rem;
  letter-spacing:0.1em;
  color:rgba(255,255,255,0.6);
  border:1px solid rgba(255,255,255,0.2);
  padding:0.3rem 0.8rem;border-radius:100px;
  transition:all 0.2s;
}
.vision-keywords span:hover { background:rgba(255,255,255,0.08);color:white; }

/* ══════════════════════════════════════════════════════════════
   CONTACT
══════════════════════════════════════════════════════════════ */
.contact-grid {
  display:grid;
  grid-template-columns:1fr 420px;
  gap:4rem;
  align-items:start;
}
.contact-left p { font-size:0.97rem;color:var(--ink-mid);margin-bottom:0.9rem; }
.contact-left p strong { color:var(--ink); }
.contact-btns { display:flex;flex-wrap:wrap;gap:0.65rem;margin-top:0.5rem; }

.contact-links-card {
  background:var(--bg-warm);
  border:1px solid var(--rule-warm);
  border-radius:var(--r-lg);
  padding:1.5rem;
}
.contact-link-list { display:flex;flex-direction:column;gap:0; }
.contact-link-list a {
  display:flex;align-items:center;gap:0.85rem;
  padding:0.75rem 0.5rem;
  border-bottom:1px solid var(--rule);
  text-decoration:none;
  transition:background 0.18s;
  border-radius:6px;
}
.contact-link-list a:last-child{border-bottom:none;}
.contact-link-list a:hover{background:var(--navy-light);}
.cl-icon { font-size:1.1rem;flex-shrink:0; }
.contact-link-list strong { font-size:0.88rem;font-weight:600;color:var(--ink);display:block; }
.contact-link-list small { font-size:0.75rem;color:var(--ink-faint); }
.cl-arr { margin-left:auto;font-size:0.8rem;color:var(--ink-faint); }

/* ── CONTACT OPPORTUNITY TAGS ─────────────────────────────── */
.contact-opps {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.25rem;
}
.copp {
  font-family: var(--ff-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  padding: 0.28rem 0.7rem;
  border-radius: 100px;
  border: 1px solid;
}
.copp-academic {
  color: var(--navy);
  background: var(--navy-light);
  border-color: var(--navy-rule);
}
.copp-industry {
  color: var(--amber-dark);
  background: var(--amber-light);
  border-color: #deb86a;
}

/* ══════════════════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════════════════ */
.footer {
  border-top:1px solid var(--rule);
  padding:1.5rem 0;
  background:var(--bg);
}
.footer .wrap {
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:0.78rem;
  color:var(--ink-faint);
}

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════ */
@media (max-width: 960px) {
  .hero-wrap     { grid-template-columns:1fr;gap:2.5rem;padding:3rem 2rem; }
  .hero-photo-col{ flex-direction:row;align-items:center;gap:1.5rem; }
  .hero-photo-ring{width:auto;}
  .hero-photo-frame{width:130px;height:130px;}
  .about-grid    { grid-template-columns:1fr;gap:2rem; }
  .exp-cols      { grid-template-columns:1fr;gap:2.5rem; }
  .contact-grid  { grid-template-columns:1fr;gap:2rem; }
}

@media (max-width: 720px) {
  :root { --nav-h:56px; }
  .nav-list {
    display:none;position:absolute;
    top:var(--nav-h);left:0;right:0;
    background:var(--bg);border-bottom:1px solid var(--rule);
    flex-direction:column;padding:0.5rem 1.5rem;
    box-shadow:0 8px 20px rgba(0,0,0,0.06);
  }
  .nav-list.open{display:flex;}
  .nav-list li{border-bottom:1px solid var(--rule);}
  .nav-list li:last-child{border-bottom:none;}
  .nav-list a{display:block;padding:0.7rem 0;border-radius:0;}
  .nav-list a.nav-cta{margin-left:0;background:none;color:var(--navy);}
  .nav-burger{display:flex;}

  .section{padding:3.5rem 0;}
  .project-grid{grid-template-columns:1fr;}
  .hero-name{font-size:2.2rem;}
  .hero-specs{flex-direction:column;align-items:flex-start;}
  .hero-specs i{display:none;}
  .footer .wrap{flex-direction:column;gap:0.3rem;text-align:center;}
}

@media(max-width:480px){
  .hero-photo-col{flex-direction:column;}
  .hero-actions{flex-direction:column;align-items:flex-start;}
  .contact-btns{flex-direction:column;align-items:flex-start;}
  .vision-keywords{display:none;}
}