/* ============================================================
 * components.css — 컴포넌트 스타일
 * 토큰은 theme.css 참조. 컴포넌트 이름은 DESIGN-OliveYoung.md를 따른다.
 * ============================================================ */

/* ============================================================
 * Header / Navigation
 * ============================================================ */
.top-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: 72px;
  background-color: color-mix(in srgb, var(--color-canvas) 92%, transparent);
  border-bottom: 1px solid transparent;
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  transition: height 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}

.top-nav.is-scrolled {
  height: 56px;
  background-color: color-mix(in srgb, var(--color-canvas) 78%, transparent);
  border-bottom-color: var(--color-hairline);
}

.top-nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-base);
  height: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

.top-nav__logo {
  font-size: var(--font-size-title-lg);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-title-lg);
  color: var(--color-ink);
  white-space: nowrap;
}

.top-nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex: 1;
  justify-content: center;
}

.nav-link {
  position: relative;
  font-size: var(--font-size-nav-link);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-nav);
  color: var(--color-ink);
  padding-block: var(--space-xs);
  transition: color 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}

.nav-link.is-active::after { transform: scaleX(1); }
.nav-link.is-active        { color: var(--color-primary-active); }

.top-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* ---- Arrows (body-fixed floating) ---- */
.nav-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
  background-color: color-mix(in srgb, var(--color-canvas) 92%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-card-lift);
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-arrow--floating {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
}
.nav-arrow--floating.nav-arrow--prev { left: var(--space-lg); }
.nav-arrow--floating.nav-arrow--next { right: var(--space-lg); }

.nav-arrow:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary-active);
}
.nav-arrow--floating:hover {
  transform: translateY(-50%) scale(1.05);
}

/* ---- Language / Theme toggles ---- */
.language-toggle,
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding-inline: var(--space-sm);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-button-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
  background-color: var(--color-canvas);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.language-toggle:hover,
.theme-toggle:hover {
  background-color: var(--color-surface-soft);
  border-color: var(--color-border-strong);
}

/* 라이트 모드: 다음 행선지(다크) 아이콘인 moon 표시. 다크 모드: sun 표시. */
.theme-toggle__icon--sun  { display: none; }
.theme-toggle__icon--moon { display: block; }
[data-theme="dark"] .theme-toggle__icon--sun  { display: block; }
[data-theme="dark"] .theme-toggle__icon--moon { display: none; }

/* ---- Hamburger (mobile) ---- */
.hamburger {
  display: none;
  width: 36px;
  height: 36px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .top-nav__menu { gap: var(--space-base); }
}

@media (max-width: 768px) {
  .top-nav { height: 64px; }
  .top-nav.is-scrolled { height: 52px; }

  .nav-arrow { display: none; }
  .hamburger { display: inline-flex; }

  .top-nav__menu {
    position: fixed;
    inset: 64px 0 0 0;
    background-color: var(--color-canvas);
    border-top: 1px solid var(--color-hairline);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: var(--space-xl) var(--space-lg);
    gap: var(--space-lg);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
  }
  .top-nav__menu.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-link {
    font-size: var(--font-size-title-md);
    width: 100%;
  }
  .nav-link::after {
    left: 0;
    right: auto;
    width: 24px;
    bottom: -4px;
  }
}

/* ============================================================
 * Page (SPA section show/hide)
 * ============================================================ */
.page {
  display: none;
  min-height: 100vh;
  padding-top: 72px;
}
.page--active { display: block; }

@media (max-width: 768px) {
  .page { padding-top: 64px; }
}

/* ============================================================
 * Buttons
 * ============================================================ */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  height: 44px;
  padding-inline: var(--space-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-button-md);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-button);
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  cursor: pointer;
}

.button--primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}
.button--primary:hover,
.button--primary:active {
  background-color: var(--color-primary-active);
}

.button--coral {
  background-color: var(--color-accent);
  color: var(--color-on-accent);
}
.button--coral:hover,
.button--coral:active {
  background-color: var(--color-accent-active);
}

.button--secondary {
  background-color: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-ink);
}
.button--secondary:hover {
  background-color: var(--color-ink);
  color: var(--color-canvas);
}

/* ============================================================
 * Home Hero
 * ============================================================ */
.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, var(--color-canvas) 0%, var(--color-surface-soft) 100%);
  padding: var(--space-section) var(--space-lg);
}

.hero__inner {
  max-width: 960px;
  width: 100%;
  text-align: left;
}

.hero__eyebrow {
  font-size: var(--font-size-title-lg);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-title-lg);
  color: var(--color-primary-active);
  margin-bottom: var(--space-base);
}

.hero__name {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  font-size: var(--font-size-display-xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-display-xl);
  letter-spacing: var(--letter-spacing-display-xl);
  color: var(--color-ink);
  margin-bottom: var(--space-lg);
}

.hero__name-en {
  font-size: var(--font-size-display-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-display-sm);
  color: var(--color-muted);
}

.hero__title {
  font-size: var(--font-size-display-sm);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-display-sm);
  letter-spacing: var(--letter-spacing-display-sm);
  color: var(--color-body);
  margin-bottom: var(--space-xl);
}
.hero__title:empty { display: none; }

.hero__highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xxl);
}

.hero__highlight {
  position: relative;
  padding-left: var(--space-base);
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body);
  color: var(--color-body);
}
.hero__highlight::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(var(--line-height-body) * 0.5em - 3px);
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
}

.hero__cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Hero 내부의 .slide-up / .fade-in 순차 등장용 딜레이 */
.hero__eyebrow      { transition-delay: 0s; }
.hero__name         { transition-delay: 0.1s; }
.hero__title        { transition-delay: 0.2s; }
.hero__highlight:nth-child(1) { transition-delay: 0.3s; }
.hero__highlight:nth-child(2) { transition-delay: 0.4s; }
.hero__highlight:nth-child(3) { transition-delay: 0.5s; }
.hero__cta          { transition-delay: 0.6s; }

@media (max-width: 768px) {
  .hero__name      { font-size: var(--font-size-display-lg); }
  .hero__name-en   { font-size: var(--font-size-title-lg); }
  .hero__title     { font-size: var(--font-size-title-lg); }
  .hero__highlight { font-size: var(--font-size-body-md); }
}

/* ============================================================
 * Footer
 * ============================================================ */
.footer {
  border-top: 1px solid var(--color-hairline);
  padding: var(--space-xxl) 0 var(--space-xl);
  background-color: var(--color-surface-soft);
}
.footer__inner {
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) auto;
  gap: var(--space-xl);
  align-items: start;
}

/* ---- Brand ---- */
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.footer__logo {
  font-size: var(--font-size-title-lg);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-title-lg);
  color: var(--color-ink);
  transition: color 0.2s ease;
}
.footer__logo:hover { color: var(--color-primary-active); }
.footer__tagline {
  font-size: var(--font-size-body-sm);
  color: var(--color-muted);
}

/* ---- Nav ---- */
.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
}
.footer__link {
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-body);
  transition: color 0.2s ease;
}
.footer__link:hover { color: var(--color-primary-active); }

/* ---- Social ---- */
.footer__social {
  display: flex;
  gap: var(--space-sm);
}
.footer__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
  background-color: var(--color-canvas);
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.footer__social-link:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary-active);
  transform: translateY(-1px);
}

/* ---- Bottom row (copyright + meta) ---- */
.footer__bottom {
  grid-column: 1 / -1;
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.footer__copy,
.footer__meta {
  font-size: var(--font-size-caption-sm);
  color: var(--color-muted);
}
.footer__meta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}
.footer__meta a {
  color: var(--color-primary-active);
  font-weight: var(--font-weight-semibold);
  transition: color 0.2s ease;
}
.footer__meta a:hover { color: var(--color-primary); }

@media (max-width: 768px) {
  .footer__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-lg);
  }
  .footer__bottom {
    justify-content: flex-start;
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ============================================================
 * Career — Layout (sidebar + content)
 * ============================================================ */
#career { padding-bottom: var(--space-section); }

.career-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: var(--space-xxl);
  padding-top: var(--space-xxl);
}

/* Section anchor offset (fixed header 72px + breathing room) */
#career-introduce,
#career-history {
  scroll-margin-top: 96px;
}

.career-section-title {
  font-size: var(--font-size-display-md);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-display-md);
  letter-spacing: var(--letter-spacing-display-md);
  color: var(--color-ink);
  margin-bottom: var(--space-xl);
}

/* ---- Sidebar (desktop) ---- */
.career-sidebar {
  position: sticky;
  top: 96px;
  align-self: start;
}

.career-submenu {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  border-left: 2px solid var(--color-hairline);
  padding-left: var(--space-base);
}

.career-submenu__link {
  position: relative;
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-muted);
  padding: var(--space-sm) 0;
  transition: color 0.2s ease;
}
.career-submenu__link::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-base) - 1px);
  top: 50%;
  width: 2px;
  height: 0;
  background-color: var(--color-primary);
  transform: translateY(-50%);
  transition: height 0.25s ease;
}
.career-submenu__link.is-active {
  color: var(--color-primary-active);
  font-weight: var(--font-weight-semibold);
}
.career-submenu__link.is-active::before { height: 24px; }
.career-submenu__link:hover { color: var(--color-ink); }

/* ---- Mobile: convert sidebar to top tabs ---- */
@media (max-width: 768px) {
  .career-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-lg);
    padding-top: var(--space-lg);
  }
  .career-sidebar {
    position: sticky;
    top: 64px;
    z-index: 10;
    background-color: var(--color-canvas);
    margin-inline: calc(-1 * var(--space-lg));
    padding-inline: var(--space-lg);
    padding-block: var(--space-sm);
    border-bottom: 1px solid var(--color-hairline);
  }
  .career-submenu {
    flex-direction: row;
    gap: var(--space-base);
    border-left: 0;
    padding-left: 0;
    overflow-x: auto;
  }
  .career-submenu__link {
    padding: var(--space-sm) var(--space-md);
    white-space: nowrap;
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-hairline);
  }
  .career-submenu__link::before { display: none; }
  .career-submenu__link.is-active {
    background-color: var(--color-primary-soft);
    border-color: var(--color-primary);
  }
}

/* ============================================================
 * Career — Introduce
 * ============================================================ */
.career-intro {
  padding-bottom: var(--space-xxl);
  border-bottom: 1px solid var(--color-hairline);
  margin-bottom: var(--space-xxl);
}

.career-intro__body {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: var(--space-xl);
  align-items: start;
}

.career-intro__profile {
  width: 140px;
  height: 140px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: none;
  display: block;
  padding: 0;
  border: none;
  overflow: hidden;
}

.career-intro__profile img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}

.career-intro__text {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.career-intro__highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.career-intro__highlight {
  position: relative;
  padding-left: var(--space-base);
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body);
  color: var(--color-body);
}
.career-intro__highlight::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(var(--line-height-body) * 0.5em - 3px);
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}
.tag {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding-inline: var(--space-md);
  border-radius: var(--radius-pill);
  background-color: var(--color-primary-soft);
  color: var(--color-primary-active);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
}

@media (max-width: 768px) {
  .career-intro__body {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-lg);
  }
  .career-intro__profile {
    width: 104px;
    height: 104px;
    padding: 2px;
  }
}

/* ---- Bio: 자기소개 상세 (토글 펼침 영역) ---- */
.career-intro__bio {
  margin-top: var(--space-xxl);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-soft);
  border: 1px solid var(--color-hairline);
  display: flex;
  flex-direction: column;
  gap: var(--space-base);
  animation: bioFade 0.35s ease-out;
}
.career-intro__bio[hidden] { display: none; }

@keyframes bioFade {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.bio__title {
  font-size: var(--font-size-title-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
}
.bio__paragraph {
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-body);
  color: var(--color-body);
}
.bio__strengths-title {
  margin-top: var(--space-base);
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink);
}
.bio__strengths {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding-left: var(--space-base);
}
.bio__strength {
  position: relative;
  padding-left: var(--space-base);
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-body);
  color: var(--color-body);
}
.bio__strength::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 5px;
  height: 5px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
}
.bio__strength-label {
  color: var(--color-ink);
  font-weight: var(--font-weight-semibold);
  margin-right: var(--space-xs);
}
.bio__closing {
  margin-top: var(--space-base);
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-body);
  color: var(--color-body);
}

/* ---- Bio toggle: 플로팅 버튼 (introduce 섹션 하단 고정) ---- */
.bio-toggle {
  position: sticky;
  bottom: var(--space-lg);
  align-self: center;
  margin-top: var(--space-xl);
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  height: 48px;
  padding-inline: var(--space-lg);
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-size: var(--font-size-button-md);
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 6px 20px rgba(130, 220, 40, 0.35);
  transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
  z-index: 20;
}
.bio-toggle:hover {
  background-color: var(--color-primary-active);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(130, 220, 40, 0.45);
}
.bio-toggle__icon {
  transition: transform 0.25s ease;
}
.bio-toggle--open .bio-toggle__icon {
  transform: rotate(180deg);
}

/* ============================================================
 * Career — Timeline
 * ============================================================ */
.timeline {
  position: relative;
  padding-left: var(--space-xl);
}
.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: var(--color-hairline);
}

.timeline__loading,
.timeline__error {
  color: var(--color-muted);
  font-size: var(--font-size-body-sm);
  padding: var(--space-base) 0;
}
.timeline__error { color: var(--color-error); }

.timeline__company {
  position: relative;
  margin-bottom: var(--space-xxl);
}

.timeline__company-header {
  position: relative;
  margin-bottom: var(--space-lg);
}

.timeline__dot {
  position: absolute;
  left: calc(-1 * var(--space-xl) + 2px);
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background-color: var(--color-canvas);
  border: 2px solid var(--color-primary);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.timeline__dot--major {
  left: calc(-1 * var(--space-xl) - 2px);
  width: 20px;
  height: 20px;
  border-width: 3px;
  background-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-soft);
}
.is-visible .timeline__dot {
  transform: scale(1.0);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--color-primary) 18%, transparent);
}
.is-visible .timeline__dot--major {
  box-shadow: 0 0 0 6px var(--color-primary-soft);
}

.timeline__company-name {
  font-size: var(--font-size-display-sm);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-display-sm);
  color: var(--color-ink);
}

.timeline__company-sub {
  margin-top: var(--space-xs);
  font-size: var(--font-size-body-sm);
  color: var(--color-muted);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}
.dot-sep { color: var(--color-muted-soft); }

.company-info {
  margin-top: var(--space-sm);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-lg);
  font-size: var(--font-size-caption);
  color: var(--color-body);
}
.company-info li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}
.company-info__label {
  display: inline-block;
  padding: 1px var(--space-sm);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-soft);
  color: var(--color-muted);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-uppercase-tag);
  letter-spacing: var(--letter-spacing-uppercase-tag);
  text-transform: uppercase;
}

.timeline__projects {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.timeline__project {
  position: relative;
}

.project-card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background-color: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.project-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card-lift);
}

.project-card__title {
  font-size: var(--font-size-title-lg);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-title);
  color: var(--color-ink);
}

.project-card__meta {
  margin-top: var(--space-xs);
  font-size: var(--font-size-body-sm);
  color: var(--color-muted);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.project-card__tasks {
  margin-top: var(--space-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.project-card__tasks li {
  position: relative;
  padding-left: var(--space-base);
  font-size: var(--font-size-body-md);
  line-height: var(--line-height-body-sm);
  color: var(--color-body);
}
.project-card__tasks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.65em;
  width: 5px;
  height: 5px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
}

/* ---- Gallery ---- */
.project-card__gallery {
  margin-top: var(--space-lg);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-md);
}
.project-card__gallery--scroll {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: var(--space-sm);
}
.project-card__gallery--scroll .project-card__image-btn {
  flex: 0 0 min(80%, 480px);
  scroll-snap-align: start;
}

.project-card__image-btn {
  display: block;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-surface-soft);
  border: 1px solid var(--color-hairline);
  transition: border-color 0.2s ease, transform 0.2s ease;
  cursor: zoom-in;
  padding: 0;
}
.project-card__image-btn:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.project-card__image-btn picture {
  display: block;
  width: 100%;
}
.project-card__image-btn img {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 768px) {
  .timeline { padding-left: var(--space-lg); }
  .timeline__dot { left: calc(-1 * var(--space-lg) + 2px); }
  .timeline__dot--major { left: calc(-1 * var(--space-lg) - 2px); }
  .project-card { padding: var(--space-base); }
  .project-card__title { font-size: var(--font-size-title-md); }
}

/* ============================================================
 * Education (Career 내부 통합) — Academic / Training 섹션
 * ============================================================ */
#career-academic,
#career-training {
  scroll-margin-top: 96px;
}

.edu-section {
  margin-top: var(--space-xxl);
  padding-top: var(--space-xxl);
  border-top: 1px solid var(--color-hairline);
}

/* ---- Academic 항목: 학교 로고 플레이스홀더 + 메타 ---- */
.edu-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: var(--space-base);
  align-items: center;
}

.edu-logo {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary-soft) 0%, var(--color-surface-soft) 100%);
  border: 1px solid var(--color-hairline);
  display: grid;
  place-items: center;
  color: var(--color-primary-active);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-title-md);
  user-select: none;
}

@media (max-width: 768px) {
  .edu-logo { width: 44px; height: 44px; font-size: var(--font-size-body-lg); }
  .edu-item { grid-template-columns: 44px minmax(0, 1fr); }
}

/* ============================================================
 * Awards / Talks — Layout (Education / Career와 동일 패턴)
 * ============================================================ */
#awards-talks { padding-bottom: var(--space-section); }

.at-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: var(--space-xxl);
  padding-top: var(--space-xxl);
}

#at-awards,
#at-talks {
  scroll-margin-top: 96px;
}

.at-section + .at-section {
  margin-top: var(--space-xxl);
  padding-top: var(--space-xxl);
  border-top: 1px solid var(--color-hairline);
}

.at-section-title {
  font-size: var(--font-size-display-md);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-display-md);
  letter-spacing: var(--letter-spacing-display-md);
  color: var(--color-ink);
  margin-bottom: var(--space-xl);
}

.at-sidebar {
  position: sticky;
  top: 96px;
  align-self: start;
}

.at-submenu {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  border-left: 2px solid var(--color-hairline);
  padding-left: var(--space-base);
}

.at-submenu__link {
  position: relative;
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-muted);
  padding: var(--space-sm) 0;
  transition: color 0.2s ease;
}
.at-submenu__link::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-base) - 1px);
  top: 50%;
  width: 2px;
  height: 0;
  background-color: var(--color-primary);
  transform: translateY(-50%);
  transition: height 0.25s ease;
}
.at-submenu__link.is-active {
  color: var(--color-primary-active);
  font-weight: var(--font-weight-semibold);
}
.at-submenu__link.is-active::before { height: 24px; }
.at-submenu__link:hover { color: var(--color-ink); }

@media (max-width: 768px) {
  .at-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-lg);
    padding-top: var(--space-lg);
  }
  .at-sidebar {
    position: sticky;
    top: 64px;
    z-index: 10;
    background-color: var(--color-canvas);
    margin-inline: calc(-1 * var(--space-lg));
    padding-inline: var(--space-lg);
    padding-block: var(--space-sm);
    border-bottom: 1px solid var(--color-hairline);
  }
  .at-submenu {
    flex-direction: row;
    gap: var(--space-base);
    border-left: 0;
    padding-left: 0;
    overflow-x: auto;
  }
  .at-submenu__link {
    padding: var(--space-sm) var(--space-md);
    white-space: nowrap;
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-hairline);
  }
  .at-submenu__link::before { display: none; }
  .at-submenu__link.is-active {
    background-color: var(--color-primary-soft);
    border-color: var(--color-primary);
  }
}

/* ============================================================
 * Awards — Card + Badge
 * ============================================================ */
.award-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.award-card__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: start;
}

.award-card__title {
  font-size: var(--font-size-title-lg);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-title);
  color: var(--color-ink);
}

.award-card__cert {
  display: block;
  max-width: 420px;
}
.award-card__cert--multi {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  max-width: 720px;
}
.award-card__cert .project-card__image-btn img {
  max-height: 320px;
  object-fit: contain;
  background-color: var(--color-surface-soft);
}

/* ---- Badge ---- */
.award-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  height: 32px;
  padding-inline: var(--space-md);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-uppercase-tag);
  text-transform: uppercase;
  border: 1.5px solid currentColor;
  white-space: nowrap;
  flex-shrink: 0;
}

.award-badge__icon { flex-shrink: 0; }
.award-badge__text { line-height: 1; }

/* 등급별 컬러: Gold / Grand Prize / 대상 / 최우수상 */
.award-badge--gold {
  color: #b8860b;
  background-color: #fff8e0;
}
.award-badge--grand {
  color: var(--color-accent-active);
  background-color: var(--color-accent-soft);
}
.award-badge--first {
  color: var(--color-primary-active);
  background-color: var(--color-primary-soft);
}
.award-badge--excellence {
  color: #4a6fb5;
  background-color: #e4ecf9;
}
.award-badge--default {
  color: var(--color-muted);
  background-color: var(--color-surface-soft);
}

[data-theme="dark"] .award-badge--gold {
  color: #f0c33c;
  background-color: rgba(184, 134, 11, 0.18);
}
[data-theme="dark"] .award-badge--excellence {
  color: #8bb0e8;
  background-color: rgba(74, 111, 181, 0.22);
}

@media (max-width: 768px) {
  .award-card__head {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-sm);
  }
  .award-card__cert { max-width: 100%; }
  .award-card__cert--multi {
    grid-template-columns: minmax(0, 1fr);
    max-width: 100%;
  }
}

/* ============================================================
 * Talks — Cards
 * ============================================================ */
.talks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.talk-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  background-color: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-top: 3px solid var(--color-accent);
  overflow: hidden;
  transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.talk-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card-lift);
  transform: translateY(-2px);
}

.talk-card__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--color-surface-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.talk-card__image .project-card__image-btn {
  border: 0;
  border-radius: 0;
}
.talk-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.talk-card__image-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-muted-soft);
  font-size: var(--font-size-caption);
}

.talk-card__body {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex: 1;
}

.talk-card__date {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-uppercase-tag);
  text-transform: uppercase;
  color: var(--color-accent-active);
}

.talk-card__event {
  font-size: var(--font-size-title-md);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-title);
  color: var(--color-ink);
}

.talk-card__session {
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-body);
  position: relative;
  padding-left: var(--space-base);
}
.talk-card__session::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  border-radius: var(--radius-full);
  background-color: var(--color-accent);
}

.talk-card__desc {
  margin-top: var(--space-xs);
  font-size: var(--font-size-body-sm);
  line-height: var(--line-height-body);
  color: var(--color-body);
}


/* ============================================================
 * Image Modal
 * ============================================================ */
.image-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background-color: var(--color-scrim);
  display: grid;
  place-items: center;
  padding: var(--space-lg);
  animation: modalFade 0.2s ease-out;
}
.image-modal[hidden] { display: none; }

@keyframes modalFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.image-modal__image {
  max-width: min(1200px, 95vw);
  max-height: 90vh;
  width: auto;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  background-color: var(--color-canvas);
}

.image-modal__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--color-canvas);
  color: var(--color-ink);
  font-size: 28px;
  line-height: 1;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-card-lift);
  transition: background-color 0.2s ease;
}
.image-modal__close:hover {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-active);
}

/* ============================================================
 * Reading — Notion iframe embed
 * ============================================================ */
#reading { padding-bottom: var(--space-section); }

.reading-layout {
  padding-top: var(--space-xxl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.reading-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.reading-title {
  font-size: var(--font-size-display-md);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-display-md);
  letter-spacing: var(--letter-spacing-display-md);
  color: var(--color-ink);
}

.reading-intro {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body);
  color: var(--color-muted);
}

.reading-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-xl) var(--space-lg);
}

.reading-status {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-xxl) var(--space-lg);
  color: var(--color-muted);
  font-size: var(--font-size-body-sm);
}

.book-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: transform 0.2s ease;
}

.book-card:hover {
  transform: translateY(-4px);
}

.book-card:hover .book-card__cover {
  box-shadow: var(--shadow-card-lift);
}

.book-card__cover {
  position: relative;
  aspect-ratio: 3 / 4;
  background-color: var(--color-surface-soft);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.book-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.book-card__cover--empty {
  display: grid;
  place-items: center;
  font-size: var(--font-size-display-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-muted);
}

.book-card__status {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  padding: 2px 8px;
  font-size: var(--font-size-caption-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
  color: var(--color-ink);
  letter-spacing: 0.02em;
}

.book-card__rating {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  padding: 2px 8px;
  font-size: var(--font-size-caption-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-pill);
  background-color: rgba(0, 0, 0, 0.65);
  color: #fff;
  letter-spacing: 0.02em;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.book-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: 0 var(--space-xxs);
}

.book-card__title {
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-semibold);
  line-height: 1.4;
  color: var(--color-ink);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: keep-all;
}

.book-card__author {
  font-size: var(--font-size-body-sm);
  color: var(--color-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.book-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-xxs);
}

.book-card__chip {
  font-size: var(--font-size-caption-sm);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-hairline);
  color: var(--color-muted);
  line-height: 1.5;
}

.book-card__chip--genre {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-active);
  border-color: transparent;
}

.book-card__date {
  font-size: var(--font-size-caption-sm);
  color: var(--color-muted);
  margin-top: var(--space-xxs);
}

@media (max-width: 768px) {
  .reading-layout { padding-top: var(--space-lg); }
  .reading-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--space-lg) var(--space-md);
  }
  .book-card__title { font-size: var(--font-size-body-sm); }
  .book-card__author { font-size: var(--font-size-caption); }
}

/* ============================================================
 * Contact
 * ============================================================ */
#contact {
  padding-bottom: var(--space-section);
  background:
    radial-gradient(circle at 15% 10%, var(--color-primary-soft) 0%, transparent 45%),
    radial-gradient(circle at 85% 90%, var(--color-accent-soft) 0%, transparent 45%),
    var(--color-canvas);
}

.contact-layout {
  padding-top: var(--space-xxl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  align-items: center;
}

.contact-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  text-align: center;
  max-width: 640px;
}

.contact-title {
  font-size: var(--font-size-display-md);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-display-md);
  letter-spacing: var(--letter-spacing-display-md);
  color: var(--color-ink);
}

.contact-intro {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-body);
  color: var(--color-muted);
}

.contact-card {
  width: 100%;
  max-width: 640px;
  padding: var(--space-xxl) var(--space-xl);
  border-radius: var(--radius-xl);
  background-color: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  box-shadow: var(--shadow-card-lift);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-card__head {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  text-align: center;
}

.contact-card__name {
  display: inline-flex;
  flex-direction: column;
  gap: var(--space-xxs);
  font-size: var(--font-size-display-sm);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-display-sm);
  letter-spacing: var(--letter-spacing-display-sm);
  color: var(--color-ink);
}

.contact-card__name-en {
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-normal);
  color: var(--color-muted);
}

.contact-card__role {
  font-size: var(--font-size-body-md);
  color: var(--color-primary-active);
  font-weight: var(--font-weight-semibold);
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.contact-item__link {
  display: flex;
  align-items: center;
  gap: var(--space-base);
  padding: var(--space-base);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-hairline);
  background-color: var(--color-canvas);
  color: var(--color-ink);
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

a.contact-item__link:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-soft);
  transform: translateY(-1px);
}

.contact-item--placeholder .contact-item__link {
  background-color: var(--color-surface-soft);
  cursor: not-allowed;
}

.contact-item__icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-soft);
  color: var(--color-primary-active);
  flex-shrink: 0;
}

.contact-item--placeholder .contact-item__icon {
  background-color: var(--color-surface-strong);
  color: var(--color-muted);
}

.contact-item__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.contact-item__label {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  color: var(--color-muted);
  letter-spacing: var(--letter-spacing-uppercase-tag);
  text-transform: uppercase;
}

.contact-item__value {
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink);
  word-break: break-all;
}

.contact-item__value--muted {
  color: var(--color-muted-soft);
  font-weight: var(--font-weight-medium);
  font-style: italic;
}

.contact-card__cta {
  align-self: center;
  min-width: 200px;
}

@media (max-width: 768px) {
  .contact-layout { padding-top: var(--space-lg); }
  .contact-card {
    padding: var(--space-xl) var(--space-base);
    gap: var(--space-lg);
  }
  .contact-card__name { font-size: var(--font-size-title-lg); }
}