/* ══════════════════════════════════════════════════════
   JO SANGBEOM — PORTFOLIO
   Design System: Monochrome Terminal Aesthetic
   Inspired by: yannickgregoire.nl
   ══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,700;1,400&display=swap');

/* ── CSS VARIABLES ─────────────────────────────────── */

:root {
  --bg:       #f4f3ef;
  --fg:       #111111;
  --fg-dim:   #666666;
  --border:   #c8c8c8;
  --invert:   #111111;
  --accent:   #2d6a4f;
  --accent-dim: rgba(45, 106, 79, 0.12);
  --nav-h:    3.25rem;

  --px-font: 'Press Start 2P', monospace;
  --mo-font: 'JetBrains Mono', 'Courier New', monospace;

  --sz-hero:    clamp(2rem,   5.5vw, 4.8rem);
  --sz-section: clamp(0.95rem, 2.2vw, 2rem);
  --sz-body:    clamp(0.78rem, 1.0vw, 0.92rem);
  --sz-small:   clamp(0.68rem, 0.85vw, 0.78rem);

  --sp-xs: 0.5rem;
  --sp-s:  1rem;
  --sp-m:  2rem;
  --sp-l:  4rem;
  --sp-xl: 7rem;

  --max-w: 980px;
  --pad-x: clamp(1.2rem, 4vw, 3rem);
}

[data-theme="dark"] {
  --bg:     #0d0d0d;
  --fg:     #eeede5;
  --fg-dim: #808080;
  --border: #282828;
  --invert: #eeede5;
  --accent: #52b788;
  --accent-dim: rgba(82, 183, 136, 0.1);
}

/* ── RESET ──────────────────────────────────────────── */

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--mo-font);
  font-size: var(--sz-body);
  color: var(--fg);
  background-color: var(--bg);
  line-height: 1.75;
  transition: background-color .3s ease, color .3s ease;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9997;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .35;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 20%, transparent 70%);
}

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

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--pad-x);
  z-index: 999;
  background: var(--fg);
  color: var(--bg);
  padding: .5rem 1rem;
  font-size: var(--sz-small);
}
.skip-link:focus { top: .5rem; }

::selection { background: var(--fg); color: var(--bg); }

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

img { max-width: 100%; display: block; height: auto; }

ul, ol { list-style: none; }

/* ── LAYOUT ─────────────────────────────────────────── */

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.section {
  padding: var(--sp-xl) var(--pad-x);
  max-width: var(--max-w);
  margin: 0 auto;
}

section[id] { scroll-margin-top: calc(var(--nav-h) + .5rem); }
.proj-item[id] { scroll-margin-top: calc(var(--nav-h) + .5rem); }

/* ── FIXED UI ───────────────────────────────────────── */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent);
  z-index: 300;
  transition: width .08s linear;
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 250;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: var(--sp-s);
  padding: 0 var(--pad-x);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease;
}

.site-nav.scrolled {
  border-bottom-color: var(--border);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  flex-shrink: 0;
  text-decoration: none;
  color: var(--fg);
}
.nav-brand:hover { text-decoration: none; opacity: .8; }

.nav-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.85rem;
  height: 1.85rem;
  font-family: var(--px-font);
  font-size: .45rem;
  background: var(--fg);
  color: var(--bg);
  letter-spacing: -.02em;
}

.nav-brand-text {
  font-size: var(--sz-small);
  letter-spacing: .1em;
  font-weight: 500;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: .15rem;
  margin-left: auto;
  margin-right: 0;
}

.nav-link {
  font-size: var(--sz-small);
  letter-spacing: .06em;
  padding: .35rem .65rem;
  color: var(--fg-dim);
  text-decoration: none;
  transition: color .2s, background .2s;
  border: 1px solid transparent;
}
.nav-link:hover {
  color: var(--fg);
  text-decoration: none;
}
.nav-link.active {
  color: var(--fg);
  border-color: var(--border);
  background: var(--accent-dim);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2rem;
  height: 2rem;
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  cursor: pointer;
  padding: .35rem;
}
.nav-toggle span {
  display: block;
  height: 1px;
  background: var(--fg);
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0;
  margin-left: auto;
  margin-right: .35rem;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.lang-btn {
  font-family: var(--mo-font);
  font-size: .62rem;
  letter-spacing: .08em;
  padding: .35rem .5rem;
  background: transparent;
  color: var(--fg-dim);
  border: none;
  cursor: pointer;
  transition: color .2s, background .2s;
}
.lang-btn:hover { color: var(--fg); }
.lang-btn.active {
  background: var(--fg);
  color: var(--bg);
}

.theme-toggle {
  flex-shrink: 0;
  background: var(--fg);
  color: var(--bg);
  border: none;
  font-family: var(--mo-font);
  font-size: var(--sz-small);
  padding: .35rem .75rem;
  cursor: pointer;
  letter-spacing: .08em;
  transition: opacity .2s;
}
.theme-toggle:hover { opacity: .75; }

.back-top {
  position: fixed;
  bottom: var(--sp-m);
  right: var(--sp-m);
  z-index: 200;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--fg);
  color: var(--bg);
  border: none;
  font-family: var(--mo-font);
  font-size: 1rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .25s, visibility .25s, transform .25s;
}
.back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover { opacity: .8; }

.kbd-hints {
  position: fixed;
  bottom: var(--sp-m);
  left: var(--sp-m);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: .25rem;
  font-family: var(--mo-font);
  font-size: var(--sz-small);
  color: var(--fg-dim);
}
.kbd-hints .row { display: flex; gap: .4rem; align-items: center; }
.kbd-hints kbd {
  background: var(--fg);
  color: var(--bg);
  padding: .05em .35em;
  font-family: var(--mo-font);
  font-size: .95em;
}

/* ── DIVIDER ────────────────────────────────────────── */

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
  max-width: var(--max-w);
  margin-inline: auto;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.1s cubic-bezier(0.22, 1, 0.36, 1);
}
.divider.visible { transform: scaleX(1); }

/* ── CUSTOM CURSOR ──────────────────────────────────── */

.cursor-glow,
.cursor-dot {
  display: none;
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width .2s ease, height .2s ease, opacity .2s ease;
}

@media (pointer: fine) {
  body.custom-cursor .cursor-glow,
  body.custom-cursor .cursor-dot { display: block; }

  body.custom-cursor,
  body.custom-cursor a,
  body.custom-cursor button { cursor: none; }
}

.cursor-glow {
  width: 1.75rem;
  height: 1.75rem;
  border: 1px solid var(--accent);
  opacity: .22;
}
.cursor-glow.hovering {
  width: 2.5rem;
  height: 2.5rem;
  opacity: .38;
}

.cursor-dot {
  width: 5px;
  height: 5px;
  background: var(--accent);
}

/* ── HERO ───────────────────────────────────────────── */

.hero-section {
  position: relative;
  min-height: 100dvh;
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.65;
}

.hero-glow {
  position: absolute;
  width: min(520px, 70vw);
  height: min(520px, 70vw);
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-dim) 0%, transparent 68%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.6s ease;
  filter: blur(2px);
}
.hero-section:hover .hero-glow { opacity: 1; }

.hero {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  padding: calc(var(--nav-h) + var(--sp-xl)) var(--pad-x) calc(var(--sp-l) + 2rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--max-w);
  margin: 0 auto;
}

.hero-in {
  opacity: 0;
  transform: translateY(16px);
}
body.is-ready .hero-in {
  animation: riseIn 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
body.is-ready .hero-in:nth-child(1) { animation-delay: 0.06s; }
body.is-ready .hero-in:nth-child(2) { animation-delay: 0.14s; }
body.is-ready .hero-in:nth-child(3) { animation-delay: 0.22s; }
body.is-ready .hero-in:nth-child(4) { animation-delay: 0.30s; }
body.is-ready .hero-in:nth-child(5) { animation-delay: 0.38s; }
body.is-ready .hero-in:nth-child(6) { animation-delay: 0.46s; }
body.is-ready .hero-in:nth-child(7) { animation-delay: 0.54s; }
@keyframes riseIn {
  to { opacity: 1; transform: translateY(0); }
}

.scroll-cue {
  position: absolute;
  bottom: var(--sp-m);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0;
  padding: 0.5rem;
  text-decoration: none;
}
body.is-ready .scroll-cue {
  animation: cueIn 0.8s ease 1s forwards;
}
@keyframes cueIn { to { opacity: 1; } }
.scroll-cue-line {
  display: block;
  width: 1px;
  height: 2.25rem;
  background: linear-gradient(to bottom, var(--fg-dim), transparent);
  animation: cuePulse 2.4s ease-in-out infinite;
}
@keyframes cuePulse {
  0%, 100% { transform: translateY(0); opacity: 0.45; }
  50% { transform: translateY(6px); opacity: 0.9; }
}

.hero-role {
  font-size: var(--sz-small);
  color: var(--fg-dim);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-s);
}

.hero-work {
  font-size: var(--sz-small);
  color: var(--fg-dim);
  margin-bottom: var(--sp-m);
}

/* ── STAGGER REVEAL ─────────────────────────────────── */

.stagger-group > * {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .55s ease, transform .55s ease;
}
.stagger-group.visible > *:nth-child(1) { transition-delay: .05s; }
.stagger-group.visible > *:nth-child(2) { transition-delay: .12s; }
.stagger-group.visible > *:nth-child(3) { transition-delay: .19s; }
.stagger-group.visible > *:nth-child(4) { transition-delay: .26s; }
.stagger-group.visible > *:nth-child(5) { transition-delay: .33s; }
.stagger-group.visible > *:nth-child(6) { transition-delay: .4s; }
.stagger-group.visible > * {
  opacity: 1;
  transform: translateY(0);
}

.featured-name { transition: letter-spacing .25s ease; }
.featured-card:hover .featured-name { letter-spacing: .08em; }

.hero-name {
  font-family: var(--px-font);
  font-size: var(--sz-hero);
  line-height: 1.4;
  letter-spacing: .03em;
  margin-bottom: var(--sp-m);
  word-break: break-word;
}
.hero-name em {
  font-style: normal;
  color: var(--accent);
}

.hero-desc {
  font-size: var(--sz-body);
  color: var(--fg-dim);
  line-height: 1.85;
  margin-bottom: var(--sp-m);
  max-width: 28em;
  text-wrap: pretty;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem .5rem;
  font-size: var(--sz-small);
  color: var(--fg-dim);
  margin-bottom: var(--sp-l);
}
.hero-meta a { color: var(--fg-dim); }
.hero-meta a:hover { color: var(--fg); text-decoration: underline; }
.meta-sep { color: var(--border); user-select: none; }

.hero-links {
  display: flex;
  gap: var(--sp-m);
  font-size: var(--sz-body);
}
.link-slide {
  position: relative;
  color: var(--fg);
  text-decoration: none;
  padding-bottom: 0.15em;
}
.link-slide::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.link-slide:hover { text-decoration: none; opacity: 1; }
.link-slide:hover::after { transform: scaleX(1); }

/* ── SECTION TITLE ───────────────────────────────────── */

.sec-title {
  position: relative;
  font-family: var(--px-font);
  font-size: var(--sz-section);
  line-height: 1.5;
  margin-bottom: var(--sp-l);
  padding-bottom: 0.6rem;
  letter-spacing: .04em;
  display: flex;
  align-items: baseline;
  gap: .75rem;
  flex-wrap: wrap;
}
.sec-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 1s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible .sec-title::after,
.sec-title.reveal.visible::after { width: 3.25rem; }
.sec-title--sm { font-size: clamp(.75rem, 1.8vw, 1.35rem); }
.sec-index {
  font-family: var(--mo-font);
  font-size: .55em;
  color: var(--accent);
  letter-spacing: .1em;
  flex-shrink: 0;
}

/* ── FEATURED ─────────────────────────────────────────── */

.featured-section .section { padding-top: var(--sp-l); padding-bottom: var(--sp-l); }

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-s);
}

.featured-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .45rem;
  padding: var(--sp-m);
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: border-color .25s, transform .2s ease, background .25s, box-shadow .25s;
  overflow: hidden;
  transform-style: preserve-3d;
  will-change: transform;
}
.featured-card.is-tilting {
  transition: border-color .25s, background .25s, box-shadow .25s;
}
.featured-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--accent);
  transition: height .3s ease;
}
.featured-card:hover {
  border-color: var(--fg);
  text-decoration: none;
  background: var(--accent-dim);
  box-shadow: 0 12px 40px color-mix(in srgb, var(--accent) 8%, transparent);
}
.featured-card:hover::before { height: 100%; }

.featured-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-s);
}
.featured-tag {
  font-size: var(--sz-small);
  color: var(--accent);
  letter-spacing: .06em;
}
.featured-year {
  font-size: var(--sz-small);
  color: var(--fg-dim);
}
.featured-name {
  font-size: clamp(.82rem, 1.3vw, .98rem);
  font-weight: 700;
  letter-spacing: .04em;
}
.featured-desc {
  font-size: var(--sz-small);
  color: var(--fg-dim);
  line-height: 1.6;
  flex: 1;
  text-wrap: pretty;
}
.featured-arrow {
  font-size: 1.1rem;
  color: var(--fg-dim);
  align-self: flex-end;
  transition: transform .2s, color .2s;
}
.featured-card:hover .featured-arrow {
  transform: translateX(4px);
  color: var(--fg);
}

/* ── ABOUT ───────────────────────────────────────────── */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-xl);
  align-items: start;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--sp-m);
}
.about-text p {
  display: flex;
  gap: .5rem;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.55s ease, transform 0.55s ease;
  text-wrap: pretty;
}
.about-text p > span:last-child {
  flex: 1;
  min-width: 0;
}
.reveal.visible .about-text p:nth-child(1) { transition-delay: 0.1s; opacity: 1; transform: none; }
.reveal.visible .about-text p:nth-child(2) { transition-delay: 0.18s; opacity: 1; transform: none; }
.reveal.visible .about-text p:nth-child(3) { transition-delay: 0.26s; opacity: 1; transform: none; }
.reveal.visible .about-text p:nth-child(4) { transition-delay: 0.34s; opacity: 1; transform: none; }
.about-text .prompt { color: var(--fg-dim); flex-shrink: 0; padding-top: .05em; }

.about-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-s);
  justify-content: center;
}
.about-link {
  display: inline-flex;
  gap: .5rem;
  align-items: center;
  font-size: var(--sz-body);
  transition: opacity .2s;
}
.about-link:hover { opacity: .55; text-decoration: none; }

/* ── WORK ────────────────────────────────────────────── */

.work-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-l);
}

.work-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--sp-l);
  padding: var(--sp-m);
  border: 1px solid transparent;
  margin: calc(var(--sp-s) * -1) 0;
  transition: border-color .25s, background .25s;
}
.work-item:hover {
  border-color: var(--border);
  background: var(--accent-dim);
}

.work-meta {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}
.work-period { font-size: var(--sz-small); color: var(--fg-dim); }
.work-badge {
  font-size: var(--sz-small);
  border: 1px solid var(--border);
  padding: .15em .5em;
  color: var(--fg-dim);
  width: fit-content;
}

.work-company {
  font-size: clamp(.88rem, 1.4vw, 1.05rem);
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: .25rem;
}
.work-role { font-size: var(--sz-body); color: var(--fg-dim); }

/* ── PROJECTS ─────────────────────────────────────────── */

.project-list {
  display: flex;
  flex-direction: column;
}

.proj-item { border-top: 1px solid var(--border); }
.proj-item:last-child { border-bottom: 1px solid var(--border); }

.proj-hdr {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--sp-m) 0;
  cursor: pointer;
  gap: var(--sp-m);
  transition: opacity .2s, background .25s, padding .25s, margin .25s;
}
.proj-hdr:hover {
  opacity: 1;
  background: var(--accent-dim);
  margin-inline: calc(var(--sp-s) * -1);
  padding-inline: var(--sp-s);
}

.proj-hdr-left { display: flex; flex-direction: column; gap: .4rem; }

.proj-top { display: flex; align-items: center; gap: .4rem; }
.proj-prompt { color: var(--fg-dim); font-size: var(--sz-body); flex-shrink: 0; }
.proj-name {
  font-size: clamp(.82rem, 1.4vw, 1rem);
  font-weight: 500;
  letter-spacing: .05em;
}
.proj-summary {
  font-size: var(--sz-small);
  color: var(--fg-dim);
  padding-left: 2.6em;
  line-height: 1.5;
  text-wrap: pretty;
}

.proj-hdr-right {
  display: flex;
  align-items: center;
  gap: var(--sp-m);
  flex-shrink: 0;
}
.proj-year { font-size: var(--sz-small); color: var(--fg-dim); white-space: nowrap; }
.proj-plus {
  font-size: 1.1rem;
  color: var(--fg-dim);
  transition: transform .35s ease;
  flex-shrink: 0;
  font-style: normal;
}
.proj-item.open .proj-plus { transform: rotate(45deg); }

.proj-tags {
  display: none;
  flex-wrap: wrap;
  gap: .35rem;
  padding-bottom: var(--sp-m);
  padding-left: 2.6em;
}
.proj-item.open .proj-tags { display: flex; }
.tag {
  font-size: var(--sz-small);
  padding: 0;
  border: none;
  color: var(--fg-dim);
  letter-spacing: .02em;
}
.tag:not(:last-child)::after {
  content: ' ·';
  color: var(--border);
}
.tag:hover { color: var(--fg); }

.proj-body {
  overflow: hidden;
  max-height: 0;
  transition: max-height .45s ease;
}
.proj-item.open .proj-body { max-height: 5000px; }

.proj-body-inner {
  padding-bottom: var(--sp-l);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .35s ease .08s, transform .35s ease .08s;
}
.proj-item.open .proj-body-inner {
  opacity: 1;
  transform: translateY(0);
}

.proj-thumb {
  width: 100%;
  max-width: 640px;
  aspect-ratio: 16/9;
  object-fit: cover;
  border: 1px solid var(--border);
  margin-bottom: var(--sp-m);
}

.proj-sections { display: flex; flex-direction: column; gap: var(--sp-m); }

.proj-sec h4 {
  font-size: var(--sz-small);
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: .5rem;
  padding-bottom: .35rem;
  border-bottom: 1px solid var(--border);
  color: var(--fg-dim);
}
.proj-sec ul { padding-left: var(--sp-s); }
.proj-sec ul li {
  font-size: var(--sz-body);
  line-height: 1.75;
  position: relative;
  padding-left: 1.2em;
}
.proj-sec ul li::before {
  content: '_ ';
  position: absolute;
  left: 0;
  color: var(--fg-dim);
}
.proj-sec img {
  max-width: 600px;
  border: 1px solid var(--border);
  margin-top: var(--sp-s);
}
.proj-sec iframe { max-width: 100%; margin-top: var(--sp-s); }
.proj-sec a { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; }

/* ── EDUCATION ────────────────────────────────────────── */

.edu-list { display: flex; flex-direction: column; gap: var(--sp-l); }

.edu-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--sp-l);
}
.edu-meta { display: flex; flex-direction: column; gap: var(--sp-xs); }
.edu-period { font-size: var(--sz-small); color: var(--fg-dim); }
.edu-badge {
  font-size: var(--sz-small);
  border: 1px solid var(--border);
  padding: .15em .5em;
  color: var(--fg-dim);
  width: fit-content;
}
.edu-name {
  font-size: clamp(.88rem, 1.4vw, 1.05rem);
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: .25rem;
}
.edu-degree { font-size: var(--sz-body); color: var(--fg-dim); margin-bottom: .2rem; }
.edu-detail { font-size: var(--sz-small); color: var(--fg-dim); }

/* ── SKILLS ───────────────────────────────────────────── */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--sp-l) var(--sp-xl);
}

.skill-cat-label {
  font-size: var(--sz-small);
  color: var(--fg-dim);
  letter-spacing: .15em;
  text-transform: uppercase;
  margin-bottom: .5rem;
}
.skill-cat-label::before { content: '[/>] '; }

.skill-tags {
  font-size: var(--sz-body);
  line-height: 1.85;
  color: var(--fg-dim);
}
.sk-tag {
  padding: 0;
  border: none;
  color: inherit;
  letter-spacing: .02em;
}
.sk-tag:not(:last-child)::after {
  content: ', ';
}
.sk-tag.sec { color: var(--fg-dim); opacity: .75; }
.skills-grid > div {
  padding-bottom: var(--sp-s);
  border-bottom: 1px solid var(--border);
}
.skills-grid > div:last-child { border-bottom: none; }

/* ── ACTIVITIES ───────────────────────────────────────── */

.act-list { display: flex; flex-direction: column; }
.act-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--sp-l);
  padding: var(--sp-m) 0;
  border-bottom: 1px solid var(--border);
}
.act-item:last-child { border-bottom: none; }
.act-period { font-size: var(--sz-small); color: var(--fg-dim); padding-top: .1em; }
.act-name { font-size: var(--sz-body); font-weight: 500; margin-bottom: .2rem; }
.act-role { font-size: var(--sz-small); color: var(--fg-dim); }

/* ── CERTIFICATIONS ───────────────────────────────────── */

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--sp-m);
}
.cert-item {
  border: 1px solid var(--border);
  padding: var(--sp-m);
  transition: border-color .2s;
}
.cert-item:hover { border-color: var(--fg); }
.cert-name { font-size: var(--sz-body); font-weight: 700; margin-bottom: .35rem; }
.cert-detail { font-size: var(--sz-small); color: var(--fg-dim); line-height: 1.7; }

/* ── CONTACT ──────────────────────────────────────────── */

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-s);
  margin-bottom: var(--sp-l);
}
.contact-link {
  font-size: clamp(.85rem, 1.5vw, 1.05rem);
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  transition: opacity .2s;
}
.contact-link:hover { opacity: .55; text-decoration: none; }
.contact-link .prompt { color: var(--fg-dim); }

.footer-line {
  padding-top: var(--sp-m);
  border-top: 1px solid var(--border);
  font-size: var(--sz-small);
  color: var(--fg-dim);
  display: flex;
  justify-content: space-between;
  gap: var(--sp-m);
  flex-wrap: wrap;
}

/* ── SCROLL REVEAL ────────────────────────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── ACCESSIBILITY ────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal,
  .stagger-group > *,
  .hero-in,
  .about-text p { opacity: 1; transform: none; }
  .hero-canvas,
  .hero-glow,
  .scroll-cue { display: none; }
  .divider { transform: none; }
}

/* ── RESPONSIVE ───────────────────────────────────────── */

@media (max-width: 960px) {
  .featured-grid { grid-template-columns: 1fr 1fr; }
  .featured-grid .featured-card:last-child { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  :root {
    --sz-hero:    clamp(1.3rem, 7vw, 2.2rem);
    --sz-section: clamp(0.85rem, 4vw, 1.4rem);
  }

  .hero { padding: calc(var(--nav-h) + var(--sp-l)) var(--pad-x) var(--sp-m); }
  .scroll-cue { display: none; }

  .featured-grid { grid-template-columns: 1fr; }

  .nav-brand-text { display: none; }
  .lang-toggle { margin-left: auto; margin-right: .25rem; }
  .nav-toggle { display: flex; }

  .nav-menu {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: var(--sp-s) var(--pad-x) var(--sp-m);
    background: color-mix(in srgb, var(--bg) 96%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform .3s ease, opacity .3s ease, visibility .3s;
    margin: 0;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-link {
    padding: .65rem .75rem;
    border-color: var(--border);
  }

  .about-grid { grid-template-columns: 1fr; gap: var(--sp-l); }
  .work-item  { grid-template-columns: 1fr; gap: var(--sp-s); }
  .edu-item   { grid-template-columns: 1fr; gap: var(--sp-s); }
  .act-item   { grid-template-columns: 1fr; gap: var(--sp-xs); }

  .proj-hdr-right .proj-year { display: none; }
  .kbd-hints { display: none; }
  .back-top { bottom: 1rem; right: 1rem; }
}