@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;600;700;800&display=swap");

:root {
  --bg: #0b0c14;
  --bg-soft: #11131e;
  --card: #161927;
  --card-hover: #1c2032;
  --line: #262b3d;
  --text: #f1f2f6;
  --text-dim: #8d92a8;
  --accent: #7c5cff;
  --accent2: #36d1c4;
  --gradient: linear-gradient(120deg, #7c5cff 0%, #36d1c4 100%);
  --shadow: 0 1.25rem 2.5rem -1.25rem rgba(124, 92, 255, 0.35);
}

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

html {
  font-size: 1rem;
  scroll-behavior: smooth;
}

[id] {
  scroll-margin-top: 5.25rem;
}

body {
  font-family: "Noto Sans KR", -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2, h3, .brand, .group-title {
  font-family: "Noto Sans KR", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

.wrap {
  max-width: 68.75rem;
  margin: 0 auto;
  padding: 0 2rem;
}

/* background ambient glow */
body::before,
body::after {
  content: "";
  position: fixed;
  width: 30rem;
  height: 30rem;
  border-radius: 50%;
  filter: blur(7.5rem);
  z-index: -1;
  opacity: 0.25;
  pointer-events: none;
}

body::before {
  background: var(--accent);
  top: -10rem;
  left: -7.5rem;
}

body::after {
  background: var(--accent2);
  bottom: -10rem;
  right: -7.5rem;
}

/* Nav */
nav.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 12, 20, 0.75);
  backdrop-filter: blur(0.75rem);
  border-bottom: 1px solid var(--line);
  transition: transform 0.3s ease;
}

nav.topnav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

nav.topnav .brand {
  font-weight: 700;
  letter-spacing: 0.0625rem;
  font-size: 1.125rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

nav.topnav .links {
  display: flex;
  gap: 0.5rem;
}

nav.topnav .mini-toc {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

nav.topnav .mini-toc::-webkit-scrollbar {
  display: none;
}

nav.topnav .mini-toc li a {
  display: block;
  white-space: nowrap;
  font-size: 0.875rem;
  color: var(--text-dim);
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  font-weight: 500;
  transition: all 0.2s ease;
}

nav.topnav .mini-toc li a:hover {
  color: var(--text);
  background: var(--card-hover);
}

nav.topnav .mini-toc li a.active {
  color: var(--bg);
  background: var(--gradient);
}

nav.topnav .links a {
  font-size: 0.9688rem;
  letter-spacing: 0.0625rem;
  color: var(--text-dim);
  padding: 0.5rem 1.125rem;
  border-radius: 999px;
  font-weight: 500;
  transition: all 0.25s ease;
}

nav.topnav .links a.active {
  color: var(--bg);
  background: var(--gradient);
}

nav.topnav .links a:not(.active):hover {
  color: var(--text);
  background: var(--card-hover);
}

/* Skill note */
.skill-note {
  font-size: 0.8125rem;
  color: var(--text-dim);
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
}

/* Lang Switch */
.lang-switch {
  flex-shrink: 0;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem 0.875rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.lang-switch:hover {
  color: var(--text);
  border-color: var(--text-dim);
  background: var(--card-hover);
}

/* Hero */
.hero {
  height: 100vh;
  padding: 7rem 0 4rem;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-body {
  width: 100%;
}

.hero-intro {
  font-size: 1.125rem;
  color: var(--text-dim);
  margin-top: 1.375rem;
  max-width: 40rem;
  line-height: 1.75;
}

.hero-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 0.875rem;
  padding: 1.5rem 1.375rem;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.hero-card:hover {
  border-color: rgba(124, 92, 255, 0.4);
  transform: translateY(-0.1875rem);
  box-shadow: var(--shadow);
}

.hero-card-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  line-height: 1;
}

.hero-card-title {
  font-size: 1.0312rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.375rem;
}

.hero-card-desc {
  font-size: 0.875rem;
  color: var(--text-dim);
  line-height: 1.6;
}


.hero .tag {
  display: inline-block;
  font-size: 0.875rem;
  letter-spacing: 0.1875rem;
  color: var(--accent2);
  margin-bottom: 1.375rem;
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
}

.hero h1 {
  font-size: 3.375rem;
  font-weight: 800;
  margin-bottom: 0.625rem;
  letter-spacing: -0.0625rem;
}

.hero h1 .grad {
  color: var(--text);
}

.hero h1 .en {
  font-size: 1.875rem;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0;
  margin-left: 0.75rem;
}

.hero .meta {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  font-size: 0.9688rem;
  color: var(--text-dim);
}

.hero .meta span {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.5rem 1rem;
}

.hero .meta span b {
  color: var(--text);
  font-weight: 600;
}

/* Section */
section.block {
  padding: 4rem 0;
  border-top: 1px solid var(--line);
}

section.block h2 {
  font-size: 1.625rem;
  letter-spacing: 0.0312rem;
  color: var(--text);
  margin-bottom: 1.75rem;
  text-transform: none;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

section.block h2::before {
  content: "";
  width: 1.375rem;
  height: 0.125rem;
  background: var(--gradient);
  display: inline-block;
}

/* Collapsible sections */
section.block h2.toggle {
  cursor: pointer;
  user-select: none;
}

section.block h2.toggle .chevron {
  margin-left: auto;
  font-size: 1.875rem;
  color: var(--text-dim);
  transition: transform 0.3s ease;
}

section.block.collapsed h2.toggle .chevron {
  transform: rotate(-90deg);
}

.collapsible {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 0.35s ease;
}

section.block.collapsed .collapsible {
  grid-template-rows: 0fr;
}

.collapsible .collapsible-inner {
  min-height: 0;
}

section.block.collapsed .collapsible-inner {
  overflow: hidden;
}

/* TOC */
.toc-list {
  list-style: none;
  counter-reset: toc;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.toc-list li {
  counter-increment: toc;
}

.toc-list li a {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.75rem 0.25rem;
  font-size: 1.0312rem;
  color: var(--text-dim);
  border-bottom: 1px solid var(--line);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.toc-list li a::before {
  content: counter(toc, decimal-leading-zero);
  font-size: 0.875rem;
  color: var(--accent2);
  font-family: "Noto Sans KR", sans-serif;
}

.toc-list li a:hover {
  color: var(--text);
  padding-left: 0.625rem;
}

/* reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Two-column section (학력/교육이수) */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.two-col .row-list .row {
  grid-template-columns: max-content 1fr;
  gap: 1.5rem;
}

.two-col .col-title {
  font-size: 0.9375rem;
  letter-spacing: 0.0938rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent2);
  margin-bottom: 0.875rem;
}

@media (max-width: 640px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
}

/* Timeline rows */
.row-list {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 1.625rem;
}

.row-list::before {
  content: "";
  position: absolute;
  left: 0.3125rem;
  top: 0.375rem;
  bottom: 0.375rem;
  width: 1px;
  background: var(--line);
}

.row-list .row {
  position: relative;
  display: grid;
  grid-template-columns: 9.375rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
  font-size: 1rem;
}

.row-list .row::before {
  content: "";
  position: absolute;
  left: -1.625rem;
  top: 1.375rem;
  width: 0.5625rem;
  height: 0.5625rem;
  border-radius: 50%;
  background: var(--accent2);
  box-shadow: 0 0 0 0.25rem rgba(54, 209, 196, 0.15);
}

.row-list .row .period {
  color: var(--text-dim);
  white-space: nowrap;
  font-size: 0.9375rem;
  padding-top: 0.125rem;
}

.row-list .row .content b {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 1.125rem;
  font-weight: 700;
}

.row-list .row .content .sub {
  color: var(--text-dim);
  font-size: 0.9375rem;
}

/* Career detail */
.career-job {
  margin-bottom: 2.5rem;
}

.career-job .job-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.625rem;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  user-select: none;
}

.career-job .job-head .job-head-main {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.career-job .job-head .company {
  font-size: 1.5rem;
  font-weight: 700;
}

.career-job .job-head .period {
  font-size: 0.9375rem;
  color: var(--accent2);
}

.career-job .job-head .job-chevron {
  font-size: 1.625rem;
  line-height: 1;
  color: var(--text-dim);
  transition: transform 0.3s ease, color 0.2s ease;
}

.career-job .job-head:hover .job-chevron {
  color: var(--accent2);
}

.career-job.collapsed .job-head .job-chevron {
  transform: rotate(-90deg);
}

.career-job .job-collapsible {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 0.35s ease;
}

.career-job.collapsed .job-collapsible {
  grid-template-rows: 0fr;
}

.career-job .job-collapsible .job-collapsible-inner {
  overflow: hidden;
  min-height: 0;
  padding-top: 0.75rem;
}

.career-job .job-meta {
  margin-bottom: 0.75rem;
}

.proj-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1.125rem 1.375rem;
  margin-bottom: 0.75rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.proj-item:hover {
  transform: translateY(-0.1875rem);
  border-color: rgba(124, 92, 255, 0.4);
  box-shadow: var(--shadow);
}

.proj-item .proj-title {
  font-weight: 700;
  font-size: 1.4062rem;
  margin-bottom: 0.375rem;
}

.proj-item .proj-title .pdate {
  font-weight: 400;
  color: var(--text-dim);
  font-size: 0.875rem;
  margin-left: 0.5rem;
}

.proj-item p {
  font-size: 0.9688rem;
  color: var(--text-dim);
}

.proj-item > .proj-genre {
  font-size: 0.875rem;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 0.625rem;
}

.proj-github {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-bottom: 0.625rem;
  padding: 0.2rem 0.6rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.proj-github::before {
  content: "⎇";
}
.proj-github:hover {
  background: var(--accent);
  color: #fff;
}

.proj-item .stack {
  margin-top: 0.625rem;
  font-size: 0.875rem;
  color: var(--text-dim);
}

.proj-item .stack b {
  color: var(--accent2);
}

.proj-item .duty {
  font-size: 1.0rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
  list-style: disc;
}

.proj-item .duty li {
  margin-left: 1.125rem;
  margin-bottom: 0.25rem;
}

#career-detail .proj-item {
  position: relative;
  cursor: pointer;
  padding-right: 3.25rem;
}

#career-detail .proj-item:hover .proj-title {
  color: var(--accent2);
}

#career-detail .proj-title .proj-chevron {
  position: absolute;
  top: 0.875rem;
  right: 1.25rem;
  font-size: 1.625rem;
  line-height: 1;
  color: var(--text-dim);
  transition: transform 0.3s ease, color 0.2s ease;
}

#career-detail .proj-item:hover .proj-chevron {
  color: var(--accent2);
}

#career-detail .proj-item.open .proj-chevron {
  transform: rotate(180deg);
}

.proj-detail {
  display: none;
}

#career-detail .proj-item.open .proj-detail {
  display: block;
}

.proj-detail-inner {
  padding: 0.875rem 0.25rem;
  display: flex;
  gap: 1.25rem;
  align-items: center;
  flex-wrap: wrap;
}

.proj-detail-text {
  flex: 1 1 15rem;
  order: 1;
  padding: 0.625rem 1rem;
}

.proj-detail-inner .proj-image.proj-image-crop {
  height: 21.25rem;
  object-fit: cover;
  object-position: center;
}

.proj-detail-inner .proj-image {
  display: block;
  width: 13.75rem;
  max-width: 100%;
  flex-shrink: 0;
  border-radius: 0.625rem;
  border: 1px solid var(--line);
  order: 2;
}

.proj-detail-text .proj-genre {
  font-size: 1.1562rem;
  color: var(--accent2);
  font-weight: 600;
  margin-bottom: 0.375rem;
}

.proj-detail-text p {
  font-size: 1.0312rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin: 0;
}

.proj-detail-text p + p {
  margin-top: 0.625rem;
}

.duty-detail {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.duty-detail li b {
  display: block;
  font-size: 1.0312rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.duty-detail .detail-sub {
  display: block;
  font-size: 0.9375rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* Highlight projects (STAR cards) */
.star-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5625rem;
  margin-bottom: 1.25rem;
}

.star-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  color: var(--text-dim);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4375rem 1rem;
}

.star-legend span b {
  color: var(--accent2);
  font-weight: 700;
}

.highlight-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 0.875rem;
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.25s ease;
}

.highlight-card:hover {
  border-color: rgba(124, 92, 255, 0.4);
}

.highlight-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 0.1875rem;
  background: var(--gradient);
}

.highlight-card .highlight-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
  user-select: none;
}

.highlight-card .highlight-head .company {
  font-size: 1.375rem;
  font-weight: 700;
}

.highlight-card .highlight-head .period {
  font-size: 0.9375rem;
  color: var(--accent2);
}

.highlight-card .highlight-chevron {
  margin-left: auto;
  font-size: 1.625rem;
  line-height: 1;
  color: var(--text-dim);
  transition: transform 0.3s ease, color 0.2s ease;
}

.highlight-card .highlight-head:hover .highlight-chevron {
  color: var(--accent2);
}

.highlight-card.collapsed .highlight-chevron {
  transform: rotate(-90deg);
}

.highlight-card .proj-genre {
  font-size: 0.9375rem;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
}

.highlight-collapsible {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 0.35s ease;
}

.highlight-card.collapsed .highlight-collapsible {
  grid-template-rows: 0fr;
}

.highlight-collapsible .highlight-collapsible-inner {
  overflow: hidden;
  min-height: 0;
}

.star-grid {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.star-row {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: 0.875rem;
  align-items: start;
}

.star-label {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--accent2);
  font-weight: 700;
  font-size: 0.9375rem;
}

.star-row p {
  font-size: 0.9688rem;
  color: var(--text-dim);
  line-height: 1.6;
  padding-top: 0.3125rem;
}

.star-row .duty {
  font-size: 0.9688rem;
  color: var(--text-dim);
  list-style: disc;
  padding-top: 0.125rem;
}

.star-row .duty li {
  margin-left: 1.125rem;
  margin-bottom: 0.3125rem;
  line-height: 1.55;
}

.star-result {
  padding-top: 0.375rem;
  border-top: 1px solid var(--line);
}

.stat-pairs {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 0.3125rem;
}

.star-result-body .stat-pairs + p {
  margin-top: 0.625rem;
  padding-top: 0;
}

.stat-pair {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.9375rem;
  flex-wrap: wrap;
}

.stat-pair .stat-name {
  color: var(--text-dim);
  margin-right: 0.25rem;
}

.stat-pair b {
  font-weight: 700;
}

.stat-pair b.good {
  color: var(--accent2);
}

.stat-pair .arrow {
  color: var(--text-dim);
}

@media (max-width: 640px) {
  .star-row {
    grid-template-columns: 1.75rem 1fr;
    gap: 0.625rem;
  }
  .star-label {
    width: 1.75rem;
    height: 1.75rem;
    font-size: 0.8125rem;
  }
}

/* Career detail company nav + timeline */
.career-toc {
  margin-bottom: 1rem;
}

.career-toc ol {
  list-style: none;
  counter-reset: ctoc;
  display: flex;
  gap: 0.625rem;
  flex-wrap: wrap;
  padding: 0;
}

.career-toc ol li {
  counter-increment: ctoc;
}

.career-toc ol li a {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dim);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.5rem 1.125rem;
  transition: all 0.2s ease;
}

.career-toc ol li a::before {
  content: counter(ctoc) ".";
  color: var(--accent2);
  font-family: "Noto Sans KR", sans-serif;
}

.career-toc ol li a:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--card-hover);
}

#career-detail {
  padding-top: 2.5rem;
}

.career-timeline {
  margin-bottom: 1.75rem;
}

.career-timeline-bar {
  display: flex;
  height: 0.875rem;
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
}

.tl-seg {
  height: 100%;
}

.tl-seg.uxis {
  background: var(--accent);
}

.tl-seg.skywalk {
  background: var(--accent2);
}

.tl-seg.gap {
  background: transparent;
}

.career-timeline-years {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-dim);
  margin-top: 0.375rem;
}

.career-timeline-legend {
  display: flex;
  gap: 1.25rem;
  margin-top: 0.875rem;
  font-size: 0.9062rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}

.career-timeline-legend .dot {
  display: inline-block;
  width: 0.5625rem;
  height: 0.5625rem;
  border-radius: 50%;
  margin-right: 0.375rem;
  vertical-align: middle;
}

.career-timeline-legend .dot.uxis {
  background: var(--accent);
}

.career-timeline-legend .dot.skywalk {
  background: var(--accent2);
}


/* Skill tags */
.skill-group {
  margin-bottom: 1.375rem;
}

.skill-group .label {
  font-size: 1.125rem;
  color: var(--text-dim);
  letter-spacing: 0.0938rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  font-weight: 600;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5625rem;
}

.tags span {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4375rem 1rem;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

#career-detail .proj-item .tags span {
  font-size: 0.8125rem;
}

.tags span:hover {
  border-color: var(--accent);
  color: var(--text);
  background: var(--card-hover);
  transform: translateY(-0.125rem);
}

/* Skill level tooltip */
.skill-tag {
  position: relative;
  border-width: 0.0938rem;
}

.skill-tag[data-level="상"] {
  border-color: #ff5c8a;
  color: #ff8fae;
}

.skill-tag[data-level="중상"] {
  border-color: var(--accent);
  color: #b9a6ff;
}

.skill-tag[data-level="중"] {
  border-color: var(--accent2);
  color: #8fe9e0;
}

.skill-tag[data-level="중하"] {
  border-color: #4f7cff;
  color: #9db8ff;
}

.skill-tag[data-level="하"] {
  border-color: var(--line);
  color: var(--text-dim);
}

.skill-tag::after {
  content: "레벨: " attr(data-level) "\A" attr(data-years) " 사용";
  position: absolute;
  bottom: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(0.25rem);
  white-space: pre;
  text-align: center;
  background: var(--bg-soft);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  line-height: 1.45;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 10;
}

.skill-tag::before {
  content: "";
  position: absolute;
  bottom: calc(100% + 0.125rem);
  left: 50%;
  transform: translateX(-50%) translateY(0.25rem);
  border: 0.3125rem solid transparent;
  border-top-color: var(--line);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 10;
}

.skill-tag:hover::after,
.skill-tag:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* English skill tooltip overrides */
.lang-en .skill-tag[data-level="중상"]::after {
  content: "Level: Proficient\AUsed: " attr(data-years) " yrs";
}
.lang-en .skill-tag[data-level="중"]::after {
  content: "Level: Intermediate\AUsed: " attr(data-years) " yrs";
}
.lang-en .skill-tag[data-level="중하"]::after {
  content: "Level: Elementary\AUsed: " attr(data-years) " yrs";
}
.lang-en .skill-tag[data-level="하"]::after {
  content: "Level: Beginner\AUsed: " attr(data-years) " yrs";
}

/* Project grid (portfolio page) */
.proj-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(18.75rem, 1fr));
  gap: 1.25rem;
}

.proj-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 0.875rem;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.proj-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 0.1875rem;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.proj-card:hover {
  transform: translateY(-0.375rem);
  border-color: rgba(124, 92, 255, 0.45);
  box-shadow: var(--shadow);
}

.proj-card:hover::before {
  opacity: 1;
}

.proj-card .title {
  font-size: 1.5rem;
  font-weight: 700;
}

.proj-card .period {
  font-size: 0.875rem;
  color: var(--accent2);
}

.proj-card .duty {
  font-size: 1.1875rem;
  color: var(--text-dim);
}

.proj-card .duty li {
  margin-left: 1rem;
  margin-bottom: 0.1875rem;
}

.proj-card .tags span {
  padding: 0.25rem 0.75rem;
  font-size: 1.0938rem;
}

.group-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 3rem 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.group-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.group-title:first-of-type {
  margin-top: 0;
}

footer {
  padding: 3rem 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9375rem;
  border-top: 1px solid var(--line);
}

footer a {
  color: var(--accent2);
}

@media (max-width: 640px) {
  .wrap {
    padding: 0 1.25rem;
  }
  section.block {
    padding: 2.75rem 0;
  }
  .hero {
    height: auto;
    padding: 5.5rem 0 4rem;
    align-items: flex-start;
    overflow: visible;
  }
  .hero-cards {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-top: 1.75rem;
  }
  .hero-intro {
    font-size: 1rem;
  }
  .hero h1 {
    font-size: 2.25rem;
  }
  .hero h1 .en {
    display: block;
    font-size: 1.375rem;
    margin-left: 0;
    margin-top: 0.375rem;
  }
  .hero .meta {
    font-size: 0.875rem;
    gap: 0.625rem;
  }
  .hero .meta span {
    padding: 0.375rem 0.75rem;
  }
  .row-list .row {
    grid-template-columns: 1fr;
  }
  nav.topnav .links {
    gap: 0.25rem;
  }
  nav.topnav .links a {
    padding: 0.375rem 0.75rem;
  }
  nav.topnav .wrap {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    height: auto;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
  }
  nav.topnav .brand {
    font-size: 1rem;
    white-space: nowrap;
  }
  nav.topnav .mini-toc {
    width: 100%;
  }
  nav.topnav .mini-toc li a {
    font-size: 0.8125rem;
    padding: 0.3125rem 0.5625rem;
  }
  nav.topnav.nav-hidden {
    transform: translateY(-100%);
  }
  [id] {
    scroll-margin-top: 7.5rem;
  }
  .career-job .job-head .company {
    font-size: 1.25rem;
  }
  .career-job .job-head .period {
    font-size: 0.8125rem;
  }
  #career-detail .proj-item {
    padding: 1rem 1.125rem;
    padding-right: 2.75rem;
  }
  #career-detail .proj-item .proj-title {
    font-size: 1.1875rem;
  }
  #career-detail .proj-title .pdate {
    display: block;
    margin-left: 0;
    margin-top: 0.25rem;
  }
  #career-detail .proj-title .proj-chevron {
    top: 1rem;
    right: 1rem;
    font-size: 1.375rem;
  }
  .proj-item .duty {
    font-size: 0.9375rem;
  }
  .proj-detail-text .proj-genre {
    font-size: 1rem;
  }
  .proj-detail-text p {
    font-size: 0.9375rem;
  }
}

/* Print / PDF export */
@media print {
  html, body {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  body::before,
  body::after {
    display: none;
  }

  nav.topnav {
    position: static;
    backdrop-filter: none;
  }

  nav.topnav .mini-toc {
    display: none;
  }

  .lang-switch {
    display: none;
  }

  /* scroll-reveal animation never fires without scrolling — force everything visible */
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  section.block.collapsed .collapsible,
  .career-job.collapsed .job-collapsible,
  .highlight-card.collapsed .highlight-collapsible {
    grid-template-rows: 1fr !important;
  }

  h2.toggle .chevron,
  .career-job .job-chevron,
  .highlight-card .highlight-chevron {
    display: none;
  }

  #career-detail .proj-item {
    cursor: default;
    padding-right: 1.375rem;
  }

  #career-detail .proj-title .proj-chevron {
    display: none;
  }

  .proj-detail {
    display: block !important;
  }

  .proj-item {
    page-break-inside: avoid;
  }

  .proj-item:hover,
  .tags span:hover {
    transform: none;
    box-shadow: none;
  }

  .career-toc {
    display: none;
  }

  /* Tighter top/bottom whitespace per exported page (PowerPoint-like density) */
  .hero {
    height: auto;
    padding: 2rem 0 1.5rem;
  }

  .hero-cards {
    margin-top: 1.5rem;
  }

  section.block {
    padding: 1.5rem 0;
  }

  section.block h2 {
    margin-bottom: 1.125rem;
  }

  #career-detail {
    padding-top: 0.5rem;
  }

  .career-timeline {
    margin-bottom: 1.125rem;
  }

  footer {
    padding: 1.25rem 0;
  }
}

/* ── Top 버튼 ── */
.top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 900;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(124, 92, 255, 0.45);
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.5rem);
  transition: opacity 0.25s, transform 0.25s;
}
.top-btn.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.top-btn:hover {
  background: var(--accent2);
}