/* ============================================
   PORTFOLIO – 채기훈
   Dark/Light theme + Print-ready
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --font: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --max-w: 900px;
  --nav-h: 64px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
}

[data-theme="dark"] {
  --bg: #0f172a;
  --bg-secondary: #1e293b;
  --card-bg: #1e293b;
  --card-border: #334155;
  --text: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #06b6d4;
  --accent-soft: rgba(6, 182, 212, 0.1);
  --accent-hover: #22d3ee;
  --divider: #334155;
  --nav-bg: rgba(15, 23, 42, 0.85);
  --tag-bg: #1e293b;
  --tag-border: #475569;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

[data-theme="light"] {
  --bg: #f8fafc;
  --bg-secondary: #f1f5f9;
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --text: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #0891b2;
  --accent-soft: rgba(8, 145, 178, 0.08);
  --accent-hover: #06b6d4;
  --divider: #e2e8f0;
  --nav-bg: rgba(248, 250, 252, 0.85);
  --tag-bg: #f1f5f9;
  --tag-border: #cbd5e1;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
}

body {
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: -0.02em;
  color: var(--text);
  background: var(--bg);
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
strong { font-weight: 600; color: var(--accent); }

::selection {
  background: var(--accent);
  color: #fff;
}

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--divider);
  transition: background var(--transition), border-color var(--transition);
}

.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.nav__logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.04em;
}

.nav__links {
  display: flex;
  gap: 28px;
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav__link:hover,
.nav__link.active {
  color: var(--accent);
}

.nav__link.active::after {
  width: 100%;
}

.nav__actions {
  display: flex;
  gap: 8px;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.btn-icon:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.icon { width: 20px; height: 20px; }

/* ── Download Buttons ── */
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn-download:hover {
  background: #0e7490;
  transform: translateY(-1px);
}
.btn-download .icon {
  width: 14px;
  height: 14px;
}

[data-theme="dark"] .icon--sun { display: block; }
[data-theme="dark"] .icon--moon { display: none; }
[data-theme="light"] .icon--sun { display: none; }
[data-theme="light"] .icon--moon { display: block; }

/* Hamburger (mobile) */
.nav__hamburger {
  display: none;
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 1001;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ---------- MAIN ---------- */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- HERO ---------- */
.hero {
  min-height: calc(100vh - var(--nav-h));
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: calc(var(--nav-h) + 40px);
  padding-bottom: 60px;
  gap: 48px;
}

.hero__intro {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.hero__text {
  flex: 1;
}

.hero__photo {
  flex-shrink: 0;
}

.hero__photo-img {
  width: 280px;
  height: 360px;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--radius);
  border: 2px solid var(--card-border);
  transition: all var(--transition);
  filter: grayscale(20%);
}

.hero__photo-img:hover {
  filter: grayscale(0%);
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(6, 182, 212, 0.15);
}

.hero__greeting {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.hero__name {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}

.accent { color: var(--accent); }

.hero__desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 28px;
}

.hero__links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 16px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.hero__link:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
}

/* KPI */
.hero__kpi {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.kpi-card {
  text-align: center;
  padding: 28px 16px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.kpi-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.kpi-card__number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.kpi-card__unit {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--accent);
}

.kpi-card__label {
  margin-top: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.kpi-card--text {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.kpi-card__icon {
  font-size: 2rem;
  color: var(--accent);
  line-height: 1;
}

.kpi-card--text .kpi-card__label {
  margin-top: 6px;
  text-align: center;
  line-height: 1.4;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ---------- SECTIONS ---------- */
.section {
  padding: 80px 0;
}

.section__label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.section__title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.section__divider {
  width: 100%;
  height: 1px;
  background: var(--divider);
  margin-bottom: 40px;
  transition: background var(--transition);
}

/* ---------- ABOUT ---------- */
.about__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.about-card {
  padding: 28px 24px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.about-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.about-card__tag {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 12px;
}

.about-card__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- SKILLS ---------- */
.skills__grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.skills__row {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.skills__category {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  min-width: 100px;
  padding-top: 6px;
}

.skills__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 50px;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.tag--skill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tag__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.tag--sm {
  font-size: 0.72rem;
  padding: 3px 10px;
}

.tag--company {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.tag--personal {
  background: rgba(168, 85, 247, 0.1);
  border-color: #a855f7;
  color: #a855f7;
}

.tag--category {
  background: rgba(56, 189, 248, 0.1);
  border-color: #38bdf8;
  color: #38bdf8;
}

/* ---------- TIMELINE ---------- */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--divider);
}

.timeline__item {
  position: relative;
  padding-bottom: 48px;
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: -37px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 2px var(--accent);
  transition: background var(--transition), border-color var(--transition);
}

.timeline__date {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 8px;
}

.timeline__company {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.timeline__role {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 8px;
}

.timeline__project {
  margin-bottom: 20px;
}

.timeline__project h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
}

.timeline__stack {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'SF Mono', 'Fira Code', monospace;
  margin-bottom: 10px;
}

.timeline__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.timeline__list {
  padding-left: 18px;
  list-style: disc;
}

.timeline__list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  line-height: 1.6;
}

.timeline__list li::marker {
  color: var(--accent);
}

.timeline__list strong,
.about-card__text strong,
.project-card__col strong {
  color: var(--accent);
  font-weight: 700;
}

/* ---------- PROJECTS ---------- */
.project-cards {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
}

.project-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.project-card__header {
  margin-bottom: 24px;
}

.project-card__header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}

.project-card__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.project-card__body {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card__subtitle {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.project-card__col p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.project-card__summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.project-card__metrics {
  margin-bottom: 12px;
}

.project-card__detail-hint {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: right;
  margin-top: 8px;
  opacity: 0.6;
  transition: opacity var(--transition), color var(--transition);
}

.project-card:hover .project-card__detail-hint {
  opacity: 1;
  color: var(--accent);
}

/* ---------- METRIC STAT ---------- */
.metric {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  transition: background var(--transition);
}

.metric:last-child {
  margin-bottom: 0;
}

.metric__label {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
  min-width: 0;
  flex-shrink: 0;
  white-space: nowrap;
}

.metric__comparison {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

.metric__before {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: line-through;
  text-decoration-color: rgba(239, 68, 68, 0.5);
}

.metric__arrow {
  color: var(--text-muted);
  font-size: 0.8rem;
  flex-shrink: 0;
}

.metric__after {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
}

.metric__badge {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  background: rgba(34, 197, 94, 0.12);
  color: #22c55e;
  white-space: nowrap;
}

[data-theme="light"] .metric__badge {
  background: rgba(22, 163, 74, 0.1);
  color: #16a34a;
}

.btn-more {
  display: block;
  margin: 32px auto 0;
  padding: 10px 32px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-more:hover {
  background: var(--accent-soft);
}

/* ---------- EDUCATION ---------- */
.edu__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.edu__heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 20px;
}

.edu__item {
  margin-bottom: 20px;
  padding-left: 16px;
  border-left: 2px solid var(--divider);
  transition: border-color var(--transition);
}

.edu__item:hover {
  border-left-color: var(--accent);
}

.edu__date {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.edu__name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-top: 2px;
}

.edu__detail {
  font-size: 0.825rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ---------- CONTACT ---------- */
.contact__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.contact__card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.contact__card:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.contact__card span {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ---------- FOOTER ---------- */
.footer {
  text-align: center;
  padding: 40px 24px;
  border-top: 1px solid var(--divider);
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* ---------- SCROLL REVEAL ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* stagger children */
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 999;
    align-items: center;
    justify-content: center;
    gap: 32px;
  }

  .nav__links.open .nav__link {
    font-size: 1.2rem;
  }

  .hero__intro {
    flex-direction: column;
    text-align: center;
  }

  .hero__photo-img {
    width: 160px;
    height: 210px;
  }

  .hero__links {
    justify-content: center;
  }

  .hero__kpi {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .skills__row {
    flex-direction: column;
    gap: 8px;
  }

  .skills__category {
    min-width: unset;
  }

  .project-card__body {
    grid-template-columns: 1fr;
  }

  .project-card {
    padding: 24px 20px;
  }

  .edu__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .hero__name {
    font-size: 2.2rem;
  }
}

@media (max-width: 480px) {
  main { padding: 0 16px; }
  .nav__inner { padding: 0 16px; }
  .section { padding: 60px 0; }
  .hero__kpi { gap: 12px; }
  .kpi-card { padding: 20px 12px; }
  .kpi-card__number { font-size: 2rem; }
}

/* ---------- PROJECT MODAL ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: relative;
  width: min(90vw, 780px);
  max-height: 85vh;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow-y: auto;
  padding: 48px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

.modal__close {
  position: sticky;
  top: 0;
  float: right;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  padding: 0 0 8px 8px;
  transition: color var(--transition);
  z-index: 1;
}

.modal__close:hover {
  color: var(--accent);
}

.modal__title {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
}

.modal__meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.modal__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 32px;
}

.modal__section {
  margin-bottom: 32px;
}

.modal__section h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.modal__section p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 8px;
}

.modal__section code {
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.82rem;
  font-family: 'Pretendard Variable', monospace;
}

.modal__trouble {
  background: var(--bg-secondary);
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 16px;
}

.modal__trouble h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.modal__trouble p {
  font-size: 0.85rem;
  line-height: 1.7;
  margin-bottom: 6px;
}

.modal__trouble p:last-child {
  margin-bottom: 0;
}

.modal__metrics {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.modal__arch-img {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  margin: 16px 0;
  cursor: zoom-in;
  transition: opacity var(--transition);
}

.modal__arch-img:hover {
  opacity: 0.85;
}

/* ---------- IMAGE LIGHTBOX ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
  cursor: zoom-out;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 92vw;
  max-height: 90vh;
  border-radius: var(--radius);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  transform: scale(0.95);
  transition: transform 0.25s ease;
}

.lightbox.active img {
  transform: scale(1);
}

body.modal-open {
  overflow: hidden;
}

@media (max-width: 768px) {
  .modal {
    width: 95vw;
    max-height: 90vh;
    padding: 24px;
  }
  .modal__title {
    font-size: 1.15rem;
  }
}

/* ---------- PRINT ---------- */
@media print {
  /* ── 기본 리셋 ── */
  * { transition: none !important; animation: none !important; }
  body {
    font-size: 10pt;
    line-height: 1.5;
    color: #1a1a1a !important;
    background: #fff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  /* ── 숨길 요소 ── */
  .nav,
  .nav__hamburger,
  .btn-icon,
  .btn-download,
  .btn-more,
  .footer,
  .hero__links {
    display: none !important;
  }

  /* ── reveal 강제 표시 ── */
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  /* ── 레이아웃 ── */
  html { scroll-padding-top: 0; }
  main { max-width: 100%; padding: 0 12px; }

  /* ── Hero ── */
  .hero {
    min-height: auto;
    padding-top: 0;
    padding-bottom: 16px;
    gap: 16px;
  }
  .hero__intro { gap: 24px; }
  .hero__photo-img {
    width: 100px !important;
    height: 130px !important;
    border: 1px solid #ccc !important;
    filter: none !important;
    border-radius: 6px !important;
  }
  .hero__name { font-size: 2rem !important; margin-bottom: 8px !important; }
  .hero__greeting { margin-bottom: 4px !important; font-size: 0.8rem !important; color: #555 !important; }
  .hero__desc { font-size: 0.85rem !important; margin-bottom: 12px !important; color: #333 !important; }

  /* ── KPI ── */
  .hero__kpi {
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
  }
  .kpi-card {
    padding: 10px 6px;
    border: 1px solid #ddd !important;
    background: #f9f9f9 !important;
  }
  .kpi-card__number { font-size: 1.3rem !important; color: #0891b2 !important; }
  .kpi-card__unit { color: #0891b2 !important; }
  .kpi-card__label { font-size: 0.7rem !important; color: #555 !important; }
  .kpi-card__icon { font-size: 1.2rem !important; color: #0891b2 !important; }

  /* ── 섹션 공통 ── */
  .section {
    padding: 16px 0 !important;
  }
  .section__label { font-size: 0.7rem !important; color: #0891b2 !important; }
  .section__title { font-size: 1.3rem !important; margin-bottom: 8px !important; }
  .section__divider { margin-bottom: 12px !important; }

  /* ── About ── */
  .about__cards { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .about-card {
    padding: 12px !important;
    border: 1px solid #ddd !important;
    background: #fafafa !important;
  }
  .about-card__tag { font-size: 0.8rem !important; color: #0891b2 !important; }
  .about-card__text { font-size: 0.75rem !important; color: #333 !important; }
  .about-card__text strong { color: #0891b2 !important; }

  /* ── Skills ── */
  .skills__category { font-size: 0.7rem !important; color: #0891b2 !important; }
  .tag { font-size: 0.65rem !important; padding: 2px 8px !important; border: 1px solid #ddd !important; background: #f5f5f5 !important; color: #333 !important; }
  .tag__icon { width: 12px !important; height: 12px !important; }

  /* ── 경력 타임라인 ── */
  .timeline__item { page-break-inside: avoid; }
  .timeline__company { font-size: 1rem !important; }
  .timeline__role { font-size: 0.75rem !important; color: #777 !important; }
  .timeline__project h4 { font-size: 0.85rem !important; color: #0891b2 !important; }
  .timeline__list li { font-size: 0.8rem !important; color: #333 !important; margin-bottom: 3px !important; }
  .timeline__list strong { color: #0891b2 !important; }
  .timeline__date { font-size: 0.7rem !important; color: #777 !important; }
  .timeline__dot { border-color: #0891b2 !important; }
  .timeline::before { background: #ddd !important; }

  /* ── 프로젝트 ── */
  .project-card {
    page-break-inside: avoid;
    padding: 14px !important;
    border: 1px solid #ddd !important;
    background: #fafafa !important;
    margin-bottom: 12px !important;
  }
  .project-card__header h3 { font-size: 0.9rem !important; }
  .project-card__subtitle { font-size: 0.7rem !important; color: #0891b2 !important; }
  .project-card__col p { font-size: 0.75rem !important; color: #333 !important; }
  .project-card__body { grid-template-columns: repeat(3, 1fr); gap: 10px; }

  /* ── 메트릭 ── */
  .metric { padding: 8px 10px !important; background: #f5f5f5 !important; }
  .metric__label { font-size: 0.65rem !important; color: #777 !important; }
  .metric__before { font-size: 0.8rem !important; color: #999 !important; }
  .metric__after { font-size: 0.9rem !important; color: #0891b2 !important; }
  .metric__badge { background: rgba(22, 163, 74, 0.1) !important; color: #16a34a !important; font-size: 0.6rem !important; }
  .metric__arrow { color: #999 !important; }

  /* ── 태그 (프로젝트) ── */
  .tag--company { color: #0891b2 !important; border-color: #0891b2 !important; background: rgba(8, 145, 178, 0.05) !important; }
  .tag--personal { color: #7c3aed !important; border-color: #7c3aed !important; background: rgba(124, 58, 237, 0.05) !important; }
  .tag--category { color: #555 !important; border-color: #aaa !important; background: #f5f5f5 !important; }

  /* ── 교육 ── */
  .edu__grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .edu-item { padding: 10px !important; border: 1px solid #ddd !important; background: #fafafa !important; }
  .edu-item__title { font-size: 0.85rem !important; }
  .edu-item__sub { font-size: 0.7rem !important; color: #777 !important; }
  .edu-item__date { font-size: 0.65rem !important; color: #999 !important; }

  /* ── 더보기 버튼, 숨겨진 프로젝트 ── */
  .btn-more { display: none !important; }
  #extra-project { display: block !important; }

  /* ── 페이지 브레이크 ── */
  h2, h3 { page-break-after: avoid; }
  .project-card, .timeline__item, .edu-item { page-break-inside: avoid; }

  /* ── 링크 URL 표시 ── */
  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.6em;
    color: #888 !important;
  }
  .hero__name::after,
  .nav__logo::after,
  .contact__card a::after,
  .tag a::after { content: none; }
}