/* ══════════════════════════════════════════════════════
   Khanh Ngo Portfolio · style.css
   ══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;0,9..40,800;1,9..40,400&family=DM+Mono:wght@400;500&display=swap');

:root {
  --accent:     #608763;
  --accent-lt:  #98b273;
  --accent-bg:  #f0f5ea;
  --accent-mid: #7a9e6b;
  --text:       #1a2214;
  --muted:      #4e6044;
  --dim:        #7a9a6a;
  --border:     #cddbbe;
  --bg:         #ffffff;
  --bg-alt:     #f5f9f1;
  --font:       'DM Sans', system-ui, sans-serif;
  --mono:       'DM Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a   { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul  { list-style: none; }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ══════════════════════════════════════════════════════
   NAVIGATION
   ══════════════════════════════════════════════════════ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border); padding: 0 2rem;
}
.nav-inner {
  max-width: 960px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 56px;
}
.nav-logo {
  display: flex; align-items: center; justify-content: center;
  padding: 0; background: transparent; border: none;
  height: 40px; text-decoration: none;
}
.nav-logo-img {
  height: 40px; width: auto; max-width: 150px;
  object-fit: contain; display: block;
}
.nav-links { display: flex; gap: 2rem; }
.nav-link {
  font-size: 0.92rem; font-weight: 500; color: var(--muted); transition: color 0.15s;
}
.nav-link:hover { color: var(--accent); text-decoration: none; }
.nav-toggle {
  display: none; flex-direction: column; gap: 4px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--muted); border-radius: 2px; }

/* ══════════════════════════════════════════════════════
   HERO
   ══════════════════════════════════════════════════════ */
.hero-section {
  padding: 108px 2rem 72px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(160deg, var(--bg) 55%, #eaf2e1 100%);
  position: relative;
  overflow: hidden;
}

.hero-graph-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 0; display: block;
}

.hero-bg-grid, .hero-glow { display: none; }

.hero-inner {
  max-width: 960px; margin: 0 auto;
  display: flex; gap: 3.5rem; align-items: flex-start;
  position: relative; z-index: 1;
}

/* ── Avatar — Artistic Graph Ring ── */
.hero-avatar-wrap {
  flex-shrink: 0;
  display: flex; flex-direction: column; align-items: center; gap: 0.75rem;
}
.avatar-graph-container {
  position: relative;
  width: 340px; height: 340px;
  display: flex; align-items: center; justify-content: center;
}

/* Canvas overlay for drawing dynamic connecting edges between avatar graph nodes */
.avatar-edges-canvas {
  position: absolute;
  inset: -100px;
  width: calc(100% + 200px);
  height: calc(100% + 200px);
  pointer-events: none;
  z-index: 4;
}

/* Hide orbit border line — keep ONLY jumping graph nodes */
.graph-orbit {
  display: none;
}

/* Base node styling — node dots (14px) with glow */
.graph-node {
  position: absolute;
  top: 50%; left: 50%;
  width: 14px; height: 14px;
  margin-top: -7px; margin-left: -7px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #ffffff;
  box-shadow: 0 0 14px var(--accent-lt), 0 0 5px var(--accent);
  transform-origin: 0 0;
  z-index: 5;
}

/* 4 nodes with slower travel times and higher parabolic jumps (+18px to +65px) */
.node-1 {
  animation: parabolaHigh 6.5s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite alternate;
}
.node-2 {
  animation: parabolaMed 5.5s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite alternate;
}
.node-3 {
  animation: parabolaHop 4.2s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite alternate;
}
.node-4 {
  animation: parabolaUltra 8.0s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite alternate;
}

/* 1. High Parabolic Arch (Peak = +50px) */
@keyframes parabolaHigh {
  0%   { transform: rotate(-20deg) translateY(-170px) scale(0.85); }
  50%  { transform: rotate(40deg) translateY(-220px) scale(1.45); }  /* +50px parabola peak */
  100% { transform: rotate(100deg) translateY(-170px) scale(0.9); }
}

/* 2. Medium Parabolic Arch (Peak = +30px) */
@keyframes parabolaMed {
  0%   { transform: rotate(60deg) translateY(-170px) scale(0.9); }
  50%  { transform: rotate(130deg) translateY(-200px) scale(1.35); } /* +30px parabola peak */
  100% { transform: rotate(200deg) translateY(-170px) scale(0.9); }
}

/* 3. Low Quick Parabolic Hop (Peak = +18px) */
@keyframes parabolaHop {
  0%   { transform: rotate(150deg) translateY(-170px) scale(0.85); }
  50%  { transform: rotate(210deg) translateY(-188px) scale(1.25); } /* +18px parabola peak */
  100% { transform: rotate(270deg) translateY(-170px) scale(0.9); }
}

/* 4. Ultra-High Parabolic Arch (Peak = +65px) */
@keyframes parabolaUltra {
  0%   { transform: rotate(240deg) translateY(-170px) scale(0.9); }
  50%  { transform: rotate(330deg) translateY(-235px) scale(1.55); } /* +65px ultra high parabola peak */
  100% { transform: rotate(420deg) translateY(-170px) scale(1.0); }
}

/* Crisp sharp rounded square avatar photo matching text block height */
.avatar-ring {
  position: relative; z-index: 2;
  width: 320px; height: 320px;
  border-radius: 28px;
  padding: 0;
  background: #ffffff;
  overflow: hidden;
  border: 2px solid rgba(152, 178, 115, 0.6);
  box-shadow: 0 8px 24px rgba(45, 69, 47, 0.15);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.avatar-graph-container:hover .avatar-ring {
  transform: scale(1.02);
  border-color: var(--accent);
  box-shadow: 0 12px 32px rgba(45, 69, 47, 0.22);
}
.avatar-ring img {
  width: 100%; height: 100%;
  border-radius: 26px;
  object-fit: cover;
  object-position: center;
  image-rendering: -webkit-optimize-contrast;
}
.avatar-placeholder-inner {
  display: none; width: 100%; height: 100%; border-radius: 22px;
  background: var(--accent-bg);
  align-items: center; justify-content: center;
  font-size: 2.8rem; font-weight: 800; color: var(--accent);
}
.avatar-placeholder .avatar-placeholder-inner { display: flex; }
.avatar-placeholder img { display: none; }

/* Hero Content */
.hero-content { flex: 1; padding-top: 0; }
.hero-greeting {
  font-size: 0.88rem; color: var(--accent-mid);
  font-family: var(--mono); letter-spacing: 0.5px;
  margin-bottom: 0.3rem; font-weight: 600;
}
.hero-name {
  font-size: 2.6rem; font-weight: 800; line-height: 1.12;
  color: var(--text); margin-bottom: 0.35rem;
}
.hero-title {
  font-size: 0.95rem; color: var(--muted);
  font-weight: 500; margin-bottom: 1.1rem;
  font-family: var(--mono); min-height: 1.5em;
  display: inline-flex; align-items: center;
}
.typing-cursor {
  display: inline-block;
  color: var(--accent);
  font-weight: 600;
  margin-left: 2px;
  animation: blinkCursor 0.75s infinite;
}
@keyframes blinkCursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}
.hero-bio {
  font-size: 0.97rem; color: var(--muted);
  max-width: 540px; line-height: 1.82; margin-bottom: 1.4rem;
  text-align: justify;
}
.hero-bio strong { color: var(--text); font-weight: 600; }

.hero-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 1.6rem; }
.tag {
  padding: 4px 13px; border-radius: 20px;
  background: var(--accent-bg); border: 1px solid var(--border);
  font-size: 0.8rem; font-weight: 500; color: var(--accent);
}

.hero-actions { display: flex; gap: 0.85rem; margin-bottom: 1.6rem; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 22px; border-radius: 8px;
  font-size: 0.9rem; font-weight: 600;
  transition: all 0.15s; cursor: pointer; border: 1px solid transparent;
  font-family: var(--font);
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-lt); text-decoration: none; }
.btn-secondary { background: transparent; color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg-alt); border-color: var(--accent); text-decoration: none; }

.hero-socials { display: flex; gap: 0.65rem; }
.social-link {
  width: 36px; height: 36px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid var(--border);
  color: var(--muted); transition: all 0.15s;
}
.social-link svg { width: 16px; height: 16px; }
.social-link:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-bg); }

/* ══════════════════════════════════════════════════════
   SHARED SECTIONS
   ══════════════════════════════════════════════════════ */
.section     { padding: 96px 2rem; position: relative; }
.section-alt {
  background-color: var(--bg-alt);
  background-image: radial-gradient(rgba(96,135,99,0.13) 1px, transparent 1px);
  background-size: 22px 22px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.container   { max-width: 960px; margin: 0 auto; }

.section-header { margin-bottom: 3rem; }
.section-eyebrow {
  display: inline-flex; align-items: center; gap: 0.7rem;
  font-family: var(--mono); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 0.8rem;
}
.section-eyebrow::before {
  content: ''; width: 28px; height: 1px; background: var(--accent-lt);
}
.section-title {
  position: relative; display: block;
  font-size: clamp(1.9rem, 4vw, 2.5rem); font-weight: 800; letter-spacing: -0.025em;
  line-height: 1.15; color: var(--text);
  padding-bottom: 0.9rem; margin-bottom: 0.4rem;
}
.section-title::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 56px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-lt));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.9s cubic-bezier(.2,.8,.2,1) 0.25s;
}
.section-header.revealed .section-title::after { transform: scaleX(1); }
.section-sub { font-size: 1rem; color: var(--muted); margin-top: 0.6rem; max-width: 560px; }

/* ── Cursor spotlight shared by all cards ── */
.spotlight { position: relative; isolation: isolate; }
.spotlight::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit; z-index: -1;
  background: radial-gradient(380px circle at var(--mx, 50%) var(--my, 50%),
              rgba(152,178,115,0.18), transparent 65%);
  opacity: 0; transition: opacity 0.35s ease; pointer-events: none;
}
.spotlight:hover::before { opacity: 1; }

/* Shared card motion */
.award-card, .project-card, .pub-card, .stat, .contact-card {
  transition: transform 0.45s cubic-bezier(.2,.8,.2,1), box-shadow 0.45s, border-color 0.35s, background-color 0.35s;
}

/* ══════════════════════════════════════════════════════
   AWARDS
   ══════════════════════════════════════════════════════ */
.awards-carousel { position: relative; }
/* Padding gives hover lift/shadow room; negative margin keeps alignment */
.carousel-viewport { overflow: hidden; padding: 10px 6px 34px; margin: -10px -6px -34px; }
.awards-track {
  display: flex; gap: 1.25rem; touch-action: pan-y; user-select: none;
  transition: transform 0.6s cubic-bezier(.2,.8,.2,1);
}
.award-card {
  flex: 0 0 calc((100% - 1.25rem) / 2);
  display: flex; flex-direction: column;
  padding: 1.6rem 1.6rem 1.5rem;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 18px; overflow: hidden;
}
.award-card::after {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-lt));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.5s cubic-bezier(.2,.8,.2,1);
}
.award-card:hover {
  transform: translateY(-5px); border-color: var(--accent-lt);
  box-shadow: 0 22px 44px -22px rgba(45,69,47,0.35);
}
.award-card:hover::after { transform: scaleX(1); }

.award-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.1rem; }
.award-icon {
  width: 46px; height: 46px; border-radius: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent-bg); color: var(--accent); border: 1px solid var(--border);
  transition: transform 0.5s cubic-bezier(.2,.8,.2,1);
}
.award-icon svg { width: 22px; height: 22px; }
.award-card:hover .award-icon { transform: rotate(-8deg) scale(1.08); }
.award-year {
  font-family: var(--mono); font-size: 0.8rem; color: var(--dim);
  padding: 2px 10px; border: 1px solid var(--border); border-radius: 20px; background: var(--bg-alt);
}

.award-rank {
  align-self: flex-start;
  display: inline-block; padding: 3px 11px; border-radius: 20px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase;
  margin-bottom: 0.7rem;
}
.rank-first       { background: #fef6d8; color: #8a5a00; border: 1px solid #f1d98a; }
.rank-second      { background: #f1f5f9; color: #475569; border: 1px solid #cbd5e1; }
.rank-third       { background: #fff1e6; color: #9a3412; border: 1px solid #fbd0a8; }
.rank-consolation { background: var(--accent-bg); color: var(--accent); border: 1px solid var(--border); }

.award-first { background: linear-gradient(155deg, #fffbea 0%, #ffffff 55%); border-color: #eedfa6; }
.award-first .award-icon { background: #fef3c7; color: #a16207; border-color: #f1d98a; }
.award-first::after { background: linear-gradient(90deg, #d4a017, #f1d98a); }
.award-third .award-icon { background: #fff1e6; color: #b45309; border-color: #fbd0a8; }

.award-title { font-size: 1.06rem; font-weight: 700; margin-bottom: 0.3rem; color: var(--text); line-height: 1.4; }
.award-org   { font-size: 0.84rem; color: var(--accent); font-weight: 600; margin-bottom: 0.6rem; line-height: 1.5; }
.award-desc  { font-size: 0.9rem; color: var(--muted); line-height: 1.65; }

/* Carousel controls */
.carousel-btn {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 10;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--border); color: var(--accent);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  box-shadow: 0 8px 20px -10px rgba(45,69,47,0.45);
  transition: background 0.25s, color 0.25s, border-color 0.25s, opacity 0.25s, transform 0.3s;
}
.carousel-btn svg { width: 16px; height: 16px; }
.carousel-btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); transform: translateY(-50%) scale(1.08); }
.carousel-btn.prev { left: -21px; }
.carousel-btn.next { right: -21px; }
.carousel-btn:disabled { opacity: 0; pointer-events: none; }

/* "Click me" hint on the next button until the visitor interacts */
.carousel-btn.nudge { background: var(--accent); color: #fff; border-color: var(--accent); }
.carousel-btn.nudge::before,
.carousel-btn.nudge::after {
  content: ''; position: absolute; inset: -1px; border-radius: 50%;
  border: 2px solid var(--accent-lt); pointer-events: none;
  animation: nudgeRing 2s cubic-bezier(.2,.8,.2,1) infinite;
}
.carousel-btn.nudge::after { animation-delay: 1s; }
.carousel-btn.nudge svg { animation: nudgeArrow 1.4s ease-in-out infinite; }
@keyframes nudgeRing {
  0%   { transform: scale(1);   opacity: 0.9; }
  100% { transform: scale(1.9); opacity: 0; }
}
@keyframes nudgeArrow {
  0%, 100% { transform: translateX(0); }
  50%      { transform: translateX(4px); }
}

.carousel-dots { display: flex; justify-content: center; gap: 7px; margin-top: 1.6rem; }
.carousel-dot {
  width: 8px; height: 8px; border-radius: 4px; padding: 0; border: none; cursor: pointer;
  background: var(--border); transition: width 0.4s cubic-bezier(.2,.8,.2,1), background 0.3s;
}
.carousel-dot.active { width: 26px; background: var(--accent); }

/* ══════════════════════════════════════════════════════
   PUBLICATIONS
   ══════════════════════════════════════════════════════ */
/* Stats strip */
.pub-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
  margin-bottom: 2.2rem;
}
.stat {
  display: flex; flex-direction: column; gap: 0.2rem;
  padding: 1.2rem 1.3rem 1.1rem;
  background: var(--bg); border: 1px solid var(--border); border-radius: 16px;
  overflow: hidden;
}
.stat:hover { transform: translateY(-3px); border-color: var(--accent-lt); box-shadow: 0 16px 32px -20px rgba(45,69,47,0.35); }
.stat-num {
  font-size: 2.4rem; font-weight: 800; line-height: 1.1; letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, #2d452f 10%, var(--accent) 60%, var(--accent-lt));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-label {
  font-family: var(--mono); font-size: 0.72rem; color: var(--dim);
  letter-spacing: 0.08em; text-transform: uppercase;
}

/* Filter tabs with sliding indicator */
.pub-filters {
  position: relative; display: inline-flex; gap: 0.25rem; flex-wrap: wrap;
  padding: 4px; margin-bottom: 1.6rem;
  background: var(--bg); border: 1px solid var(--border); border-radius: 999px;
}
.filter-indicator {
  position: absolute; top: 4px; bottom: 4px; left: 0; width: 0;
  border-radius: 999px; background: var(--accent);
  box-shadow: 0 6px 16px -6px rgba(96,135,99,0.7);
  transition: transform 0.45s cubic-bezier(.2,.8,.2,1), width 0.45s cubic-bezier(.2,.8,.2,1);
}
.pub-filter {
  position: relative; z-index: 1;
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 6px 16px; border-radius: 999px;
  background: transparent; border: none;
  color: var(--muted); font-size: 0.88rem; font-weight: 600;
  cursor: pointer; transition: color 0.3s; font-family: var(--font);
}
.pub-filter:hover { color: var(--accent); }
.pub-filter.active { color: #fff; }
.filter-count {
  font-family: var(--mono); font-size: 0.7rem; font-weight: 500;
  padding: 0 6px; border-radius: 10px;
  background: var(--accent-bg); color: var(--accent); transition: all 0.3s;
}
.pub-filter.active .filter-count { background: rgba(255,255,255,0.22); color: #fff; }

.pub-list { display: flex; flex-direction: column; gap: 1.1rem; }

/* Publication card */
.pub-card {
  display: grid; grid-template-columns: 64px 1fr; gap: 0 1.2rem;
  padding: 1.55rem 1.7rem 1.4rem 1.3rem;
  background: var(--bg); border: 1px solid var(--border); border-radius: 18px;
  overflow: hidden;
}
.pub-card::after {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, var(--accent-lt), var(--accent));
  transform: scaleY(0); transform-origin: top;
  transition: transform 0.5s cubic-bezier(.2,.8,.2,1);
}
.pub-card:hover {
  transform: translateY(-4px); border-color: var(--accent-lt);
  box-shadow: 0 24px 48px -24px rgba(45,69,47,0.4);
}
.pub-card:hover::after { transform: scaleY(1); }
.pub-card.hidden { display: none; }

.pub-index {
  font-family: var(--mono); font-size: 2.3rem; font-weight: 500; line-height: 1;
  color: transparent; -webkit-text-stroke: 1.2px var(--border);
  padding-top: 0.2rem; user-select: none;
  transition: color 0.4s, -webkit-text-stroke-color 0.4s, transform 0.5s cubic-bezier(.2,.8,.2,1);
}
.pub-card:hover .pub-index { color: var(--accent-lt); -webkit-text-stroke-color: var(--accent-lt); transform: translateY(-2px); }

.pub-main { min-width: 0; }
.pub-kicker {
  display: flex; align-items: center; flex-wrap: wrap; gap: 0.4rem 0.7rem;
  font-size: 0.84rem;
}
.pub-type {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--mono); font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-bg);
  padding: 2px 9px; border-radius: 5px; border: 1px solid var(--border);
}
.pub-type svg { width: 12px; height: 12px; }
.pub-venue { font-style: italic; font-weight: 600; color: var(--accent); line-height: 1.4; }
.pub-year {
  font-family: var(--mono); font-size: 0.8rem; color: var(--dim);
}

.pub-title {
  font-size: 1.13rem; font-weight: 700; line-height: 1.42; letter-spacing: -0.01em;
  color: #22361f; margin: 0.65rem 0 0.4rem;
}
.pub-title a {
  color: inherit;
  background-image: linear-gradient(var(--accent-lt), var(--accent-lt));
  background-size: 0 1.5px; background-repeat: no-repeat; background-position: 0 100%;
  transition: background-size 0.5s cubic-bezier(.2,.8,.2,1), color 0.3s;
}
.pub-title a:hover { text-decoration: none; }
.pub-card:hover .pub-title a { background-size: 100% 1.5px; color: #2d452f; }

.pub-authors { font-size: 0.9rem; color: #526c54; line-height: 1.6; }
.author-me {
  color: #1f3a22; font-weight: 700;
  background: linear-gradient(transparent 58%, rgba(152,178,115,0.35) 58%);
  padding: 0 2px;
}
.pub-authors sup { color: var(--accent); font-weight: 700; }
.pub-equal-note { font-size: 0.78rem; color: var(--accent-mid); font-style: italic; margin-left: 0.25rem; }

.pub-meta-right { margin-left: auto; display: inline-flex; align-items: center; gap: 0.7rem; }
.pub-bottom {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem;
}
.pub-bottom .pub-authors { flex: 1; min-width: 0; }
.pub-bottom .pub-links { flex-shrink: 0; }
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  height: 22px; padding: 0 9px; border-radius: 5px;
  font-size: 0.7rem; font-weight: 700; white-space: nowrap;
}
.rank-q1      { background: #e8f5e9; color: #2e7d32; border: 1px solid #a5d6a7; }
.rank-q2      { background: #e3f2fd; color: #1565c0; border: 1px solid #90caf9; }
.rank-conf    { background: #fff8e1; color: #c24e00; border: 1px solid #ffcc80; }
.rank-journal { background: #f3e5f5; color: #6a1b9a; border: 1px solid #ce93d8; }

.pub-status { border-radius: 20px; }
.pub-status::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor;
  animation: statusPulse 2s ease-out infinite;
}
@keyframes statusPulse {
  0%   { box-shadow: 0 0 0 0 currentColor; }
  70%  { box-shadow: 0 0 0 5px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.status-published { background: #e8f5e9; color: #2e7d32; border: 1px solid #a5d6a7; }
.status-accepted  { background: var(--accent-bg); color: var(--accent); border: 1px solid var(--border); }
.status-revision  { background: #fff8e1; color: #c24e00; border: 1px solid #ffcc80; }
.status-review    { background: #fdf4e3; color: #a35a00; border: 1px solid #f3d29a; }

.pub-links { display: flex; gap: 6px; }
.pub-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 13px; border-radius: 8px;
  background: var(--accent-bg); border: 1px solid var(--border);
  font-size: 0.8rem; font-weight: 600; color: var(--accent);
  transition: background 0.25s, color 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.pub-link svg { width: 13px; height: 13px; }
.pub-link-arrow { display: inline-flex; transition: transform 0.35s cubic-bezier(.2,.8,.2,1); }
.pub-link-arrow svg { width: 11px; height: 11px; }
.pub-link:hover {
  background: var(--accent); border-color: var(--accent); color: #fff; text-decoration: none;
  box-shadow: 0 8px 18px -8px rgba(96,135,99,0.8);
}
.pub-link:hover .pub-link-arrow { transform: translate(2px, -2px); }

.pub-more-wrap { display: flex; justify-content: center; margin-top: 1.8rem; }
.pub-more {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 10px 24px; border-radius: 999px; cursor: pointer;
  background: var(--bg); border: 1px solid var(--border);
  font-family: var(--font); font-size: 0.9rem; font-weight: 600; color: var(--accent);
  box-shadow: 0 10px 24px -16px rgba(45,69,47,0.5);
  transition: background 0.3s, color 0.3s, border-color 0.3s, transform 0.4s cubic-bezier(.2,.8,.2,1), box-shadow 0.3s;
}
.pub-more[hidden] { display: none; }
.pub-more svg { width: 16px; height: 16px; transition: transform 0.5s cubic-bezier(.2,.8,.2,1); }
.pub-more:not(.expanded) svg { animation: nudgeDown 1.6s ease-in-out infinite; }
.pub-more.expanded svg { transform: rotate(180deg); }
.pub-more:hover {
  background: var(--accent); color: #fff; border-color: var(--accent);
  transform: translateY(-2px); box-shadow: 0 16px 30px -14px rgba(96,135,99,0.8);
}
@keyframes nudgeDown {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(3px); }
}

.pub-card.pub-enter { animation: revealUp 0.55s cubic-bezier(.2,.8,.2,1) var(--d, 0ms) backwards; }

/* ══════════════════════════════════════════════════════
   PROJECTS
   ══════════════════════════════════════════════════════ */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.project-card {
  display: flex; flex-direction: column;
  padding: 1.6rem 1.5rem 1.4rem;
  background: var(--bg); border: 1px solid var(--border); border-radius: 18px;
  overflow: hidden; min-height: 230px;
}
.project-card:hover {
  transform: translateY(-5px); border-color: var(--accent-lt);
  box-shadow: 0 22px 44px -22px rgba(45,69,47,0.35);
}
.project-num {
  position: absolute; top: 0.9rem; right: 1.2rem;
  font-family: var(--mono); font-size: 2.6rem; line-height: 1;
  color: transparent; -webkit-text-stroke: 1.2px var(--border);
  transition: color 0.4s, -webkit-text-stroke-color 0.4s; user-select: none;
}
.project-card:hover .project-num { color: var(--accent-bg); -webkit-text-stroke-color: var(--accent-lt); }
.project-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 1rem; padding-right: 3.5rem; }
.project-tag {
  padding: 3px 10px; border-radius: 20px;
  background: var(--accent-bg); border: 1px solid var(--border);
  font-size: 0.72rem; font-weight: 600; color: var(--accent);
}
.project-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.4rem; color: var(--text); }
.project-desc  { font-size: 0.9rem; color: var(--muted); margin-bottom: 1.1rem; line-height: 1.65; }
.project-links { display: flex; gap: 6px; flex-wrap: wrap; margin-top: auto; }

/* ══════════════════════════════════════════════════════
   CONTACT
   ══════════════════════════════════════════════════════ */
.contact-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 1rem;
}
.contact-card {
  display: flex; flex-direction: column; align-items: center;
  gap: 0.55rem; padding: 1.8rem 1.1rem;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 18px; text-align: center; cursor: pointer; overflow: hidden;
}
.contact-card:hover {
  text-decoration: none; transform: translateY(-4px); border-color: var(--accent-lt);
  box-shadow: 0 20px 40px -22px rgba(45,69,47,0.35);
}
.contact-icon {
  width: 50px; height: 50px; border-radius: 14px;
  background: var(--accent-bg); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); transition: background 0.3s, color 0.3s, transform 0.5s cubic-bezier(.2,.8,.2,1);
}
.contact-card:hover .contact-icon { background: var(--accent); color: #fff; transform: translateY(-2px) scale(1.06); }
.contact-icon svg { width: 22px; height: 22px; }
.contact-label { font-family: var(--mono); font-size: 0.72rem; font-weight: 500; color: var(--dim); text-transform: uppercase; letter-spacing: 0.1em; }
.contact-value { font-size: 0.9rem; font-weight: 500; color: var(--muted); }

/* ══════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════ */
.footer { padding: 1.75rem 2rem; border-top: 1px solid var(--border); text-align: center; background: var(--bg); }
.footer-text { font-size: 0.85rem; color: var(--dim); }

/* ══════════════════════════════════════════════════════
   NAV EXTRAS
   ══════════════════════════════════════════════════════ */
.nav-link { position: relative; }
.nav-link::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; border-radius: 2px;
  background: var(--accent-lt); transform: scaleX(0); transition: transform 0.35s cubic-bezier(.2,.8,.2,1);
}
.nav-link:hover::after, .nav-link.active-nav::after { transform: scaleX(1); }
.nav-link.active-nav { color: var(--accent); }
.navbar.scrolled { box-shadow: 0 6px 24px -14px rgba(45,69,47,0.35); }
.scroll-progress {
  position: absolute; left: 0; right: 0; bottom: -1px; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-lt));
  transform: scaleX(0); transform-origin: left;
}

/* ══════════════════════════════════════════════════════
   INTRO MODE  (first visit: preloader → hero entrance →
   full-screen sections stacking over each other)
   ══════════════════════════════════════════════════════ */
html.intro-loading, html.intro-loading body { overflow: hidden; }

/* Navbar stays hidden until the visitor reaches the end */
.navbar { transition: box-shadow 0.3s, transform 0.8s cubic-bezier(.2,.8,.2,1); }
html.intro .navbar { transform: translateY(-110%); }

/* ── Preloader ── */
.preloader { display: none; }
html.intro .preloader {
  position: fixed; inset: 0; z-index: 1000;
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  background:
    radial-gradient(900px circle at 20% 15%, rgba(152,178,115,0.18), transparent 60%),
    radial-gradient(700px circle at 85% 90%, rgba(96,135,99,0.22), transparent 60%),
    #142017;
  color: #eaf3df;
  clip-path: inset(0 0 0 0);
  transition: clip-path 1s cubic-bezier(.77,0,.18,1);
}
.preloader.done { clip-path: inset(0 0 100% 0) !important; }
.pl-inner { text-align: center; padding: 0 1rem; }
.pl-eyebrow, .pl-sub {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--accent-lt);
  animation: plFade 0.9s cubic-bezier(.2,.8,.2,1) 0.2s backwards;
}
.pl-sub { margin-top: 1.1rem; color: rgba(234,243,223,0.6); letter-spacing: 0.14em; animation-delay: 0.9s; }
.pl-name {
  font-size: clamp(3rem, 11vw, 9rem); font-weight: 800; letter-spacing: -0.045em; line-height: 1.05;
  margin-top: 0.6rem;
}
.pl-name .ch {
  display: inline-block;
  animation: chRise 1s cubic-bezier(.2,.8,.2,1) calc(0.25s + var(--i) * 55ms) backwards;
}
.pl-name .ch:nth-child(n+6) { color: var(--accent-lt); }
.pl-foot {
  position: absolute; left: 2rem; right: 2rem; bottom: 2rem;
  display: flex; align-items: center; gap: 1.2rem;
}
.pl-bar { flex: 1; height: 1px; background: rgba(234,243,223,0.15); overflow: hidden; }
.pl-bar span { display: block; height: 100%; background: var(--accent-lt); transform: scaleX(0); transform-origin: left; }
.pl-count { font-family: var(--mono); font-size: 0.85rem; color: rgba(234,243,223,0.7); font-variant-numeric: tabular-nums; }

@keyframes chRise {
  from { opacity: 0; transform: translateY(0.6em) rotate(6deg); filter: blur(8px); }
  to   { opacity: 1; transform: none; filter: blur(0); }
}
@keyframes plFade {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}

/* ── Hero entrance after the preloader ── */
html.intro:not(.intro-ready) .hero-content > *,
html.intro:not(.intro-ready) .graph-node,
html.intro:not(.intro-ready) .scroll-cue { opacity: 0; }
html.intro:not(.intro-ready) .avatar-ring { clip-path: inset(100% 0 0 0 round 28px); }

html.intro-ready .avatar-ring { animation: clipUp 1.3s cubic-bezier(.77,0,.18,1) 0.15s backwards; }
html.intro-ready .avatar-ring img { animation: imgSettle 1.8s cubic-bezier(.2,.8,.2,1) 0.15s backwards; }
html.intro.intro-ready .graph-node { opacity: 1; transition: opacity 0.8s 1.2s; }
html.intro-ready .hero-name .ch {
  display: inline-block;
  animation: chRise 1s cubic-bezier(.2,.8,.2,1) calc(0.55s + var(--i) * 45ms) backwards;
}
html.intro-ready .hero-content > * { animation: plFade 0.9s cubic-bezier(.2,.8,.2,1) calc(0.7s + var(--i) * 90ms) backwards; }
html.intro-ready .scroll-cue { animation: plFade 0.9s cubic-bezier(.2,.8,.2,1) 1.6s backwards; }

@keyframes clipUp {
  from { clip-path: inset(100% 0 0 0 round 28px); }
  to   { clip-path: inset(0 0 0 0 round 28px); }
}
@keyframes imgSettle {
  from { transform: scale(1.3); }
  to   { transform: scale(1); }
}

/* ── Full-screen sections ── */
html.intro .hero-section,
html.intro .section {
  min-height: 100vh; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  overflow: hidden;
}
html.intro .hero-section { padding-bottom: 120px; }
html.intro .hero-inner,
html.intro .section > .container { width: 100%; position: relative; z-index: 1; }

/* Giant outlined word drifting behind each section */
.bg-word { display: none; }
html.intro .bg-word {
  display: block; position: absolute; top: 24%; left: 0; z-index: 0;
  font-size: clamp(6rem, 19vw, 17rem); font-weight: 800; letter-spacing: -0.04em; line-height: 1;
  white-space: nowrap; pointer-events: none; user-select: none;
  color: transparent; -webkit-text-stroke: 1.5px rgba(96,135,99,0.16);
  will-change: transform;
}

.scroll-cue { display: none; }
html.intro .scroll-cue {
  position: absolute; left: 50%; bottom: 30px; z-index: 2; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--dim);
}
html.intro .scroll-cue:hover { color: var(--accent); text-decoration: none; }
.scroll-mouse {
  width: 24px; height: 38px; border-radius: 13px; border: 2px solid var(--accent-lt);
  display: flex; justify-content: center; padding-top: 7px;
}
.scroll-wheel {
  width: 3px; height: 8px; border-radius: 2px; background: var(--accent);
  animation: scrollWheel 1.6s cubic-bezier(.2,.8,.2,1) infinite;
}
@keyframes scrollWheel {
  0%   { transform: translateY(0);    opacity: 1; }
  80%  { transform: translateY(11px); opacity: 0; }
  100% { transform: translateY(0);    opacity: 0; }
}

.section-dots {
  position: fixed; right: 24px; top: 50%; transform: translateY(-50%); z-index: 90;
  display: flex; flex-direction: column; gap: 14px;
  opacity: 0; pointer-events: none; transition: opacity 0.5s;
}
html.intro .section-dots { opacity: 1; pointer-events: auto; }
.section-dot {
  position: relative; width: 10px; height: 10px; border-radius: 50%; padding: 0; cursor: pointer;
  background: transparent; border: 2px solid var(--accent-lt);
  transition: background 0.3s, transform 0.4s cubic-bezier(.2,.8,.2,1), border-color 0.3s;
}
.section-dot.active { background: var(--accent); border-color: var(--accent); transform: scale(1.35); }
.section-dot::after {
  content: attr(data-label); position: absolute; right: 22px; top: 50%;
  transform: translate(6px, -50%); opacity: 0; pointer-events: none; white-space: nowrap;
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent); background: var(--bg); border: 1px solid var(--border);
  padding: 2px 9px; border-radius: 6px;
  transition: opacity 0.25s, transform 0.25s;
}
.section-dot:hover::after { opacity: 1; transform: translate(0, -50%); }

/* ══════════════════════════════════════════════════════
   SCROLL REVEAL
   ══════════════════════════════════════════════════════ */
@keyframes revealUp {
  from { opacity: 0; transform: translateY(26px); }
  to   { opacity: 1; transform: translateY(0); }
}
[data-reveal]:not(.revealed) { opacity: 0; }
[data-reveal].revealed { animation: revealUp 0.8s cubic-bezier(.2,.8,.2,1) var(--d, 0ms) backwards; }

/* Stronger, per-component entrances while in intro mode */
html.intro [data-reveal].revealed { animation: introRise 1s cubic-bezier(.2,.8,.2,1) var(--d, 0ms) backwards; }

html.intro .section-header.revealed { animation: none; }
html.intro .section-header.revealed .section-eyebrow { animation: introSlideIn 0.9s cubic-bezier(.2,.8,.2,1) var(--d, 0ms) backwards; }
html.intro .section-header.revealed .section-title   { animation: introMaskUp 1.1s cubic-bezier(.77,0,.18,1) calc(var(--d, 0ms) + 120ms) backwards; }
html.intro .section-header.revealed .section-sub     { animation: introRise 1s cubic-bezier(.2,.8,.2,1) calc(var(--d, 0ms) + 300ms) backwards; }
html.intro .section-header.revealed .section-title::after { transition-delay: 0.9s; }

html.intro .award-card.revealed,
html.intro .project-card.revealed { animation: introFlip 1.1s cubic-bezier(.2,.8,.2,1) var(--d, 0ms) backwards; transform-origin: 50% 0; }
html.intro .pub-card.revealed     { animation: introWipe 1.1s cubic-bezier(.77,0,.18,1) var(--d, 0ms) backwards; }
html.intro .stat.revealed         { animation: introPop 0.9s cubic-bezier(.34,1.56,.64,1) var(--d, 0ms) backwards; }
html.intro .contact-card.revealed { animation: introPop 0.9s cubic-bezier(.34,1.56,.64,1) var(--d, 0ms) backwards; }

@keyframes introRise {
  from { opacity: 0; transform: translateY(70px) scale(0.94); filter: blur(10px); }
  to   { opacity: 1; transform: none; filter: blur(0); }
}
@keyframes introSlideIn {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: none; }
}
@keyframes introMaskUp {
  from { clip-path: inset(0 0 100% 0); transform: translateY(40px); }
  to   { clip-path: inset(0 0 -20% 0); transform: none; }
}
@keyframes introFlip {
  from { opacity: 0; transform: perspective(1000px) translateY(80px) rotateX(-28deg) scale(0.95); }
  to   { opacity: 1; transform: none; }
}
@keyframes introWipe {
  from { opacity: 0; transform: translateX(-50px); clip-path: inset(0 100% 0 0 round 18px); }
  to   { opacity: 1; transform: none; clip-path: inset(0 0 0 0 round 18px); }
}
@keyframes introPop {
  from { opacity: 0; transform: scale(0.6) rotate(-6deg); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html.intro .preloader { display: none; }
  [data-reveal]:not(.revealed) { opacity: 1; }
  .section-title::after { transform: scaleX(1); }
}

/* ══════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════ */
@media (max-width: 860px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 56px; left: 0; right: 0;
    background: rgba(255,255,255,0.98); border-bottom: 1px solid var(--border);
    padding: 1rem 2rem; gap: 1rem;
  }
  .nav-link::after { display: none; }
  .section-dots { display: none; }
  .nav-toggle { display: flex; }

  .avatar-graph-container { width: 225px; height: 225px; }
  .avatar-ring { width: 200px; height: 200px; }
  .hero-inner { flex-direction: column; align-items: center; text-align: center; gap: 2rem; }
  .hero-bio { text-align: left; }
  .hero-title { min-height: 3.1em; justify-content: center; }   /* long lines wrap to 2 rows; avoid layout jump */
  .hero-tags, .hero-actions, .hero-socials { justify-content: center; }

  .projects-grid { grid-template-columns: 1fr; }
  .award-card { flex-basis: 100%; }
  .carousel-btn.prev { left: -8px; }
  .carousel-btn.next { right: -8px; }

  .pub-card { grid-template-columns: 1fr; padding: 1.3rem 1.2rem 1.2rem; }
  .pub-index { position: absolute; top: 1.1rem; right: 1.1rem; font-size: 1.7rem; padding: 0; }
  .pub-kicker { padding-right: 2.8rem; }
  .pub-meta-right { margin-left: 0; }
  .pub-bottom { flex-direction: column; align-items: flex-start; gap: 0.7rem; }

  .section { padding: 64px 1rem; }
  .hero-section { padding: 84px 1rem 52px; }
}

@media (max-width: 480px) {
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .stat-num { font-size: 2rem; }
  .hero-name { font-size: 2.1rem; }
}