:root {
  --black: #1a1714;
  --white: #ffffff;
  --gray: #9a8f82;
  --line: #e4ddd2;
  --bg: #fbfaf7;
  --bg-soft: #f3f1ec;
  --header-h: 64px;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: "Roboto", "Pretendard", -apple-system, sans-serif;
  color: var(--black);
  background: var(--bg);
  line-height: 1.6;
  padding-top: var(--header-h);
  -webkit-font-smoothing: antialiased;
}

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

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  z-index: 100;
}

.header__name {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.12em;
}

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

.header__nav a {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray);
  letter-spacing: 0.05em;
  transition: color 0.2s ease;
}

.header__nav a:hover,
.header__nav a.is-active {
  color: var(--black);
}

.header__nav a {
  position: relative;
}

.header__nav a::after {
  content: attr(data-tooltip);
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  margin-top: 8px;
  padding: 4px 10px;
  background: var(--black);
  color: var(--white);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.05em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.header__nav a:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.header__pdf {
  display: inline-block;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-decoration: none;
  background: var(--black);
  color: var(--white);
  border: 1px solid var(--black);
  border-radius: 999px;
  padding: 8px 20px;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.header__pdf:hover {
  opacity: 0.75;
}

/* ---------- Layout ---------- */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 40px;
  border-bottom: 1px solid var(--line);
}

.bleed {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

.section:last-of-type {
  border-bottom: none;
}

.section__index {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gray);
  text-transform: uppercase;
  margin-bottom: 20px;
  padding: 6px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 64px;
}


/* ---------- Intro ---------- */
.section--intro {
  padding-top: 70px;
  padding-bottom: 120px;
}

.intro__role {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
  color: var(--gray);
  margin-bottom: 20px;
}

.intro__tagline {
  font-size: clamp(2.5rem, 7vw, 5.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.08;
  max-width: 880px;
  margin-bottom: 64px;
}

.intro__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  border-top: 1px solid var(--black);
  border-bottom: 1px solid var(--black);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 24px;
  border-right: 1px solid var(--line);
}

.stat:last-child {
  border-right: none;
}

.stat__num {
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.stat__label {
  font-size: 13px;
  color: var(--gray);
  letter-spacing: 0.02em;
}

/* ---------- Placeholder images ---------- */
.placeholder {
  position: relative;
  width: 100%;
  background: var(--bg-soft);
  border: 1px dashed #cfcfcf;
  display: flex;
  align-items: center;
  justify-content: center;
}

.placeholder::after {
  content: attr(data-label);
  font-size: 12px;
  color: #b3b3b3;
  letter-spacing: 0.02em;
  text-align: center;
  padding: 0 12px;
  word-break: break-all;
}

/* ---------- Featured Projects ---------- */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 120px;
}

.project {
  display: flex;
  align-items: flex-start;
  gap: 48px;
}

.project__image {
  flex: 0 0 60%;
  aspect-ratio: 4 / 3;
}

.project__info {
  flex: 1;
  margin-top: 0;
}

.project__image--carousel {
  position: relative;
  overflow: hidden;
  background: var(--bg-soft);
}

.project__num {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--gray);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.project__category {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 16px;
  margin-left: 12px;
  padding: 4px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.project__name {
  font-size: clamp(1.2rem, 2.1vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.project__role {
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 16px;
}

.project__desc {
  font-size: 14px;
  margin-bottom: 20px;
  max-width: 480px;
}

.project__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.project__meta li {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid var(--black);
  border-radius: 999px;
  padding: 6px 16px;
}

/* ---------- Grid galleries ---------- */
.grid-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 64px 8px;
}

.grid-gallery .grid-item--more {
  display: none;
}

.grid-gallery.is-expanded .grid-item--more {
  display: block;
}

.grid-gallery__toggle {
  display: block;
  margin: 48px auto 0;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: var(--bg);
  color: var(--black);
  border: 1px solid var(--black);
  border-radius: 999px;
  padding: 12px 32px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.grid-gallery__toggle:hover {
  background: var(--black);
  color: var(--white);
}

.grid-item__image {
  aspect-ratio: 1920 / 1281;
  margin-bottom: 10px;
}


.grid-item__image--carousel {
  position: relative;
  overflow: hidden;
  background: var(--bg-soft);
}

.carousel {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: zoom-in;
  transform: translateX(100%);
  transition: transform 0.5s ease;
}

.carousel__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255, 255, 255, 0.6);
  color: var(--black);
  font-size: 18px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2;
  transition: background 0.2s ease;
}

.carousel__btn:hover {
  background: rgba(255, 255, 255, 0.85);
}

.carousel__btn--prev {
  left: 10px;
}

.carousel__btn--next {
  right: 10px;
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.85);
  z-index: 1000;
  cursor: zoom-out;
}

.lightbox.is-open {
  display: flex;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
}

.lightbox__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  font-size: 28px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1001;
  transition: background 0.2s ease;
}

.lightbox__btn:hover {
  background: rgba(255, 255, 255, 0.35);
}

.lightbox__btn--prev {
  left: 24px;
}

.lightbox__btn--next {
  right: 24px;
}

.lightbox__close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 40px;
  height: 40px;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  font-size: 22px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1001;
  transition: background 0.2s ease;
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.35);
}

.grid-item figcaption {
  font-size: 14px;
  font-weight: 500;
  padding: 0 16px;
}

.grid-item__title {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.grid-item__meta {
  font-size: 11px;
  font-weight: 500;
  color: var(--gray);
  letter-spacing: 0.02em;
  margin-bottom: 6px;
}

.grid-item__desc {
  font-size: 12px;
  color: #666666;
}

/* ---------- About & Skills ---------- */
.about {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 120px;
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.about__media {
  margin: 0;
}

.about__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  margin-bottom: 10px;
  background: var(--bg-soft);
}

.about__caption {
  font-size: 13px;
  color: var(--gray);
}

.about__text {
  font-size: 14px;
}

.skills {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.skills__label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 20px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.skill-tags li {
  flex: none;
  white-space: nowrap;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid var(--black);
  border-radius: 999px;
  padding: 6px 16px;
}

.tool-list {
  list-style: none;
  max-width: 280px;
}

.tool-list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.tool-list__item:first-child {
  border-top: 1px solid var(--black);
}

.tool-list__name {
  font-size: clamp(0.85rem, 1.4vw, 1rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: #666666;
}

.tool-list__level {
  display: flex;
  gap: 5px;
}

.tool-list__box {
  width: 12px;
  height: 12px;
  border: 1px solid var(--black);
}

.tool-list__box.is-filled {
  background: var(--black);
}

/* ---------- Career timeline ---------- */
.career__group-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}

.career__group-title--edu {
  margin-top: 56px;
}

.timeline {
  list-style: none;
  border-top: 1px solid var(--black);
}

.timeline__item {
  display: flex;
  align-items: baseline;
  gap: 40px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.timeline__period {
  flex: 0 0 180px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline__year {
  font-size: 13px;
  font-weight: 500;
  color: var(--black);
  letter-spacing: 0.02em;
}

.timeline__duration {
  font-size: 12px;
  font-weight: 400;
  color: var(--gray);
}

.timeline__info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline__company {
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.timeline__role {
  font-size: 13px;
  font-weight: 400;
  color: var(--gray);
  letter-spacing: 0.01em;
}

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  padding: 32px 40px;
  font-size: 12px;
  color: var(--gray);
}

.footer__notice {
  margin-top: 8px;
  font-size: 11px;
  line-height: 1.6;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .header__nav {
    display: none;
  }

  .section {
    padding: 80px 24px;
  }

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

  .about {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .project {
    flex-direction: column;
    gap: 24px;
  }

  .project__image {
    flex: none;
    width: 100%;
    aspect-ratio: 16 / 9;
  }
}

@media (max-width: 560px) {
  .grid-gallery {
    grid-template-columns: 1fr;
  }

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

  .timeline__period {
    flex: none;
  }
}

/* ---------- Print ---------- */
@media print {
  body {
    padding-top: 0;
  }

  .header,
  .footer,
  .header__pdf {
    display: none;
  }

  .section {
    padding: 32px 0;
    border-bottom: none;
    page-break-after: always;
    break-after: page;
  }

  .section:last-of-type {
    page-break-after: avoid;
  }

  .placeholder {
    border: 1px solid #ccc;
  }
}

/* ---------- Password Gate ---------- */
.gate {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}

.gate.is-unlocked {
  display: none;
}

.gate__form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 24px;
  text-align: center;
}

.gate__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--black);
}

.gate__input {
  width: 200px;
  font-family: inherit;
  font-size: 16px;
  text-align: center;
  letter-spacing: 0.2em;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--black);
}

.gate__input:focus {
  outline: none;
  border-color: var(--black);
}

.gate__submit {
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: var(--black);
  color: var(--white);
  border: 1px solid var(--black);
  border-radius: 999px;
  padding: 10px 28px;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.gate__submit:hover {
  opacity: 0.75;
}

.gate__error {
  font-size: 12px;
  color: #c0392b;
  visibility: hidden;
}

.gate__error.is-visible {
  visibility: visible;
}