/*
 * Palette overrides are kept separate so VS Code Live Preview always serves
 * the latest colors even when styles.css is open in an older editor buffer.
 */
/* Restored blue palette. */
:root {
  --accent: #2563eb; /*#2962ff*/
  --accent-hover: #003adc;
  --accent-dark: #224878;
  --bullet: #2b4bb4;
  --orange: #7698c2;
  --title: #263e5b;
  --ink: #3a4e66;
  --muted: rgba(58, 78, 102, 0.82);
  --line: #dce5ee;
  --page: #f7f7f7;
  --card: #fff;
  --shadow: 0 20px 40px rgba(42, 65, 91, 0.08);
  --icon: #2b4bb4;
  --nav-start: #001f5f;
  --nav-end: #2b4bb4;
  --button-text: #2563eb;
  --button-bg: #eff6ff;
  --button-border: #bfdbfe;
  --button-hover-text: #fff;
  --button-hover-bg: #2563eb;
  --button-hover-border: #2563eb;
  --venue: #3a4e66;
  --award: #971c1c;
  --footer: rgba(58, 78, 102, 0.52);
}

/* Previous warm palette inspired by youngwoo-git.github.io.
 * Kept here for easy restoration; this selector is intentionally inactive. */
:root[data-theme="warm-reference"] {
  --accent: oklch(0.4 0.085 55);
  --accent-hover: oklch(0.3 0.1 55);
  --accent-dark: oklch(0.3 0.1 55);
  --bullet: oklch(0.44 0.09 55);
  --orange: oklch(0.62 0.1 65);
  --title: #1e1c18;
  --ink: #3d3a33;
  --muted: #6b675e;
  --line: #e5e1d6;
  /* Reference base background: #faf9f6 */
  --page: #f3efe6;
  --card: #fffdf9;
  --shadow: 0 1px 4px rgba(30, 28, 24, 0.06), 0 8px 24px rgba(30, 28, 24, 0.06);
  --icon: oklch(0.44 0.09 55);
  --nav-start: oklch(0.48 0.085 55);
  --nav-end: oklch(0.35 0.095 55);
  --button-text: oklch(0.4 0.085 55);
  --button-bg: oklch(0.96 0.02 80);
  --button-border: #ddd9cf;
  --button-hover-text: oklch(0.3 0.1 55);
  --button-hover-bg: oklch(0.96 0.02 80);
  --button-hover-border: oklch(0.4 0.085 55);
  /* Reference venue accent: oklch(0.55 0.11 45) */
  --venue: var(--ink);
  --award: oklch(0.48 0.12 35);
  --footer: #8a8578;
}

html,
body {
  /* Previous: background: #f7f7f7; */
  background: var(--page);
}

.hero__image {
  /* Previous position: 50% 45%; previous images remain in styles.css. */
  background-image: url("assets/hyunHouse.jpg");
  background-position: 50% 70%;
}

a {
  /* Previous: color: #2962ff; */
  color: var(--accent);
  -webkit-font-smoothing: auto;
  -moz-osx-font-smoothing: auto;
}

a:hover {
  color: var(--accent-hover);
}

.skip-link {
  background: var(--accent-dark);
}

.social-link:hover,
.contact-item__copy > a:hover,
.section-nav__link:hover,
.silent-link:hover {
  color: var(--accent-hover);
}

.contact-item:last-child .contact-item__copy > a {
  color: var(--accent);
}

.section-nav__link {
  background: var(--button-bg);
}

.section-nav__link.is-active {
  color: var(--page);
  /* Previous: background: linear-gradient(142.17deg, #2b4bb4, #2b4bb4); */
  background: linear-gradient(142.17deg, var(--nav-start), var(--nav-end));
}

.section-nav__link.is-active .section-nav__icon,
.section-nav__link.is-active .section-nav__icon::before {
  color: var(--page);
}

.section-nav__link:not(.is-active):hover .section-nav__icon,
.section-nav__link:not(.is-active):hover .section-nav__icon::before {
  color: var(--icon);
}

.resume-heading__icon {
  color: var(--icon);
}

/* app.js keeps the previous fixed SVG fill (#2b4bb4); this rule lets the
 * active palette control the rendered icon color without deleting it. */
.resume-heading__icon .icon path {
  fill: currentColor;
}

.timeline-item::before {
  background: var(--bullet);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--bullet) 22%, transparent);
}

.timeline-item__title {
  font-size: 14px;
  font-weight: 600;
}

.timeline-item__period,
.timeline-item__description,
.detail-list {
  font-size: 14px;
}

#experience-list .timeline-item__description {
  color: #111;
}

#experience-list .experience-details {
  margin: -12px 0 16px;
  padding-left: 18px;
  color: #111;
  font-size: 14px;
  line-height: 1.6;
}

#experience-list .experience-details li::marker {
  color: #111;
}

#experience-list .experience-details li + li {
  margin-top: 2px;
}

#experience-list .timeline-inline-link {
  color: var(--accent);
}

.publication-link,
.publication-link:link,
.publication-link:visited {
  display: inline-flex;
  align-items: center;
  margin: 0;
  padding: 3px 10px;
  color: var(--button-text) !important;
  background: var(--button-bg);
  border: 1px solid var(--button-border);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.5;
  text-decoration: none;
  -webkit-font-smoothing: auto;
  -moz-osx-font-smoothing: auto;
  transition: all 0.18s ease;
}

.publication-link:hover,
.publication-link:focus {
  color: var(--button-hover-text) !important;
  background: var(--button-hover-bg);
  border-color: var(--button-hover-border);
  text-decoration: none;
}

.publication__meta {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  margin: 2px 0 8px;
}

.publication__links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 16px;
}

.publication__note-inline {
  margin-left: 6px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 400;
}

.publication__award {
  /* Previous: color: #971c1c; */
  color: var(--award);
  font-weight: 700;
}

.own-name {
  font-weight: 500;
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.author-marker {
  position: relative;
  top: -0.35em;
  margin-left: 1px;
  font-size: 0.7em;
  line-height: 0;
  vertical-align: baseline;
}

.timeline-item__inline-details {
  margin-left: 8px;
  color: var(--muted);
  white-space: nowrap;
}

.publication__title {
  font-size: 14px;
  font-weight: 600;
}

.publication__authors {
  font-size: 14px;
}

.venue__name {
  /* Previous: color: #971c1c; */
  color: var(--venue);
  font-size: 14px;
  font-weight: 700;
}

.venue__year {
  color: var(--ink);
  font-size: 14px;
  /* font-weight: 700; */
}

.site-footer {
  align-items: center;
  color: var(--footer);
  flex-direction: column;
  gap: 1px;
}

.site-credit {
  align-self: flex-end;
  font-size: 10px;
  text-align: right;
}

.site-credit a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.site-credit a:hover {
  color: var(--accent);
}

@media (max-width: 991.98px) {
  .hero__image {
    /* Previous mobile settings: height: 792px; transform: translateY(-66px); */
    height: 396px;
    background-position: 50% 112%;
    background-size: auto 662px;
    transform: none;
  }

  .section-nav {
    box-shadow: 0 20px 40px rgba(42, 65, 91, 0.18);
  }

  .section-nav__link.is-active {
    color: var(--accent);
    background: transparent;
  }

  .section-nav__link.is-active .section-nav__icon,
  .section-nav__link.is-active .section-nav__icon::before {
    color: var(--accent);
  }

  .section-nav__link {
    background: transparent;
  }
}

@media (min-width: 576px) and (max-width: 991.98px) {
  .contact-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(2, 41.5781px);
    grid-auto-flow: column;
    min-height: 119.1562px;
    column-gap: 24px;
  }

  .contact-item {
    text-align: left;
  }

  .sidebar {
    height: auto;
  }

  .section-nav {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    width: 100%;
    height: 142px;
    margin: 0;
    padding: 30px;
    justify-content: flex-start;
    gap: 16px;
    flex-direction: row;
    background: var(--card);
    border-radius: var(--radius) var(--radius) 0 0;
    box-shadow: var(--shadow);
  }

  .section-nav__link {
    width: 100px;
    height: 82px;
    flex: 0 0 100px;
    color: var(--ink);
    background: var(--button-bg);
    border-radius: 16px;
    font-size: 12px;
  }

  .section-nav__link.is-active {
    color: var(--page);
    background: linear-gradient(142.17deg, var(--nav-start), var(--nav-end));
    box-shadow: -4px -4px 5px rgba(0, 0, 0, 0.1) inset,
      4px 4px 5px rgba(255, 255, 255, 0.23) inset;
  }

  .section-nav__link.is-active .section-nav__icon,
  .section-nav__link.is-active .section-nav__icon::before {
    color: var(--page);
  }

  .section-nav__icon {
    width: 28px;
    height: 28px;
    margin: 4px 0 4px;
  }

  .section-nav__icon::before {
    font-size: 28px;
    line-height: 28px;
  }

  #about {
    border-radius: 0 0 var(--radius) var(--radius);
  }
}

@media (min-width: 992px) and (max-width: 1199.98px) {
  .section-nav {
    height: 228px;
    padding: 24px;
  }

  .section-nav__link {
    width: 100%;
    max-width: 100px;
    height: 82px;
    flex: 0 0 82px;
    align-self: flex-start;
    border-radius: 16px;
    font-size: 12px;
  }

  .section-nav__icon {
    width: 28px;
    height: 28px;
    margin: 4px 0 4px;
  }

  .section-nav__icon::before {
    font-size: 28px;
    line-height: 28px;
  }
}

@media (max-width: 575.98px) {
  .hero__image {
    /* Enlarge the landscape photo so the house appears above the profile card. */
    background-position: 50% 125%;
    background-size: auto 620px;
  }
}