/* ————————————————————————————————
   졸업작품 아카이브 · 스타일
   ———————————————————————————————— */

:root {
  --paper: #f6f4f0;
  --paper-2: #eceae4;
  --ink: #141311;
  --ink-soft: #3f3b35;
  --muted: #847d72;
  --line: #dcd6cc;
  --accent: #c8491f;
  --radius: 3px;
  --max: 1440px;
  --pad: clamp(16px, 4.2vw, 48px);
  --head-h: 66px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --font: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
          "Malgun Gothic", "Noto Sans KR", "Segoe UI", Roboto, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.is-locked { overflow: hidden; }

img { max-width: 100%; display: block; }
button { font: inherit; color: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.dot { margin: 0 .5em; color: var(--muted); }

.eyebrow {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  font-style: italic;
}

/* ——— 상단 바 ——— */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.topbar__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
  height: var(--head-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand { display: flex; align-items: center; gap: 11px; margin-right: auto; min-width: 0; }
.brand__mark { color: var(--ink); display: flex; flex-shrink: 0; }
.brand__text { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.brand__text b { font-size: 13.5px; font-weight: 650; letter-spacing: -0.02em; white-space: nowrap; }
.brand__text span { font-size: 11.5px; color: var(--muted); letter-spacing: .02em; }

.topbar__nav { display: flex; align-items: center; gap: 26px; font-size: 13.5px; }
.topbar__nav a { color: var(--ink-soft); position: relative; padding: 4px 0; }
.topbar__nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px;
  background: var(--ink); transition: right .35s var(--ease);
}
.topbar__nav a:hover::after { right: 0; }
.topbar__cta { color: var(--muted) !important; }

.tag-proto {
  font-family: var(--serif);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 9px;
}

/* ——— 히어로 ——— */
.hero { padding: clamp(48px, 9vw, 118px) 0 clamp(36px, 6vw, 72px); }
.hero__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, .8fr);
  gap: clamp(24px, 5vw, 80px);
  align-items: end;
}

.hero__main { min-width: 0; }

.hero__title {
  margin: 0;
  font-size: clamp(33px, 5.6vw, 88px);
  line-height: 1;
  letter-spacing: -0.045em;
  font-weight: 700;
  word-break: keep-all;
}
.hero__title em { font-style: normal; color: var(--accent); }

.hero__aside { padding-bottom: 8px; }
.hero__lede {
  margin: 0 0 30px;
  font-size: clamp(14.5px, 1.15vw, 16.5px);
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 34ch;
  word-break: keep-all;
}

.stats { display: flex; gap: clamp(18px, 3vw, 44px); margin: 0; padding-top: 22px; border-top: 1px solid var(--line); }
.stat dt { font-size: 11px; letter-spacing: .12em; color: var(--muted); text-transform: uppercase; margin-bottom: 2px; }
.stat dd { margin: 0; font-family: var(--serif); font-size: clamp(24px, 2.4vw, 32px); line-height: 1.1; letter-spacing: -0.01em; }
.stat dd i { font-style: normal; font-family: var(--font); font-size: 12px; color: var(--muted); margin-left: 2px; }

/* ——— 필터 ——— */
.filters {
  position: sticky;
  top: var(--head-h);
  z-index: 40;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0 var(--pad);
}
.filters__row {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 58px;
}
.filters__row--tools { border-top: 1px solid var(--line); min-height: 54px; gap: 16px; }

.chips { display: flex; align-items: center; gap: 4px; overflow-x: auto; scrollbar-width: none; -ms-overflow-style: none; padding: 8px 0; }
.chips::-webkit-scrollbar { display: none; }

.chip {
  border: 0;
  background: transparent;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 550;
  color: var(--muted);
  white-space: nowrap;
  transition: color .2s, background .2s;
}
.chip:hover { color: var(--ink); background: var(--paper-2); }
.chip.is-active { color: var(--paper); background: var(--ink); }
.chip--sm { font-size: 12.5px; padding: 6px 11px; }
.chip--sm.is-active { color: var(--ink); background: var(--paper-2); font-weight: 650; }

.tools { display: flex; align-items: center; gap: 10px; margin-left: auto; }

.search {
  display: flex; align-items: center; gap: 7px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 0 13px;
  height: 36px;
  color: var(--muted);
  transition: border-color .2s, box-shadow .2s;
}
.search:focus-within { border-color: var(--ink); box-shadow: 0 0 0 3px rgba(20,19,17,.06); }
.search input {
  border: 0; outline: 0; background: transparent; width: 168px;
  font-size: 13.5px; color: var(--ink); letter-spacing: -0.01em;
}
.search input::placeholder { color: #a9a29a; }
.search input::-webkit-search-cancel-button { -webkit-appearance: none; }

.select { position: relative; }
.select select {
  appearance: none; -webkit-appearance: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  height: 36px;
  padding: 0 32px 0 14px;
  font-size: 13.5px;
  color: var(--ink-soft);
  letter-spacing: -0.01em;
  cursor: pointer;
}
.select::after {
  content: ""; position: absolute; right: 14px; top: 50%; width: 6px; height: 6px;
  border-right: 1.5px solid var(--muted); border-bottom: 1.5px solid var(--muted);
  transform: translateY(-70%) rotate(45deg); pointer-events: none;
}

.result-line {
  max-width: var(--max);
  margin: 22px auto 16px;
  padding: 0 var(--pad);
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .01em;
}
.result-line b { color: var(--ink); font-weight: 650; }

/* ——— 타일 그리드 ——— */
.grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad) clamp(40px, 6vw, 80px);
  column-count: 4;
  column-gap: clamp(10px, 1.5vw, 22px);
}

.card {
  break-inside: avoid;
  margin: 0 0 clamp(10px, 1.5vw, 22px);
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  padding: 0;
  animation: cardIn .5s var(--ease) both;
}

@keyframes cardIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.card__frame {
  position: relative;
  overflow: hidden;
  background: var(--paper-2);
  border-radius: var(--radius);
}
.card__img {
  width: 100%; height: auto;
  transition: transform .7s var(--ease), filter .4s;
  background: var(--paper-2);
}
.card__overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 16px;
  background: linear-gradient(to top, rgba(10,9,8,.72) 0%, rgba(10,9,8,.12) 42%, rgba(10,9,8,0) 68%);
  opacity: 0;
  transition: opacity .35s var(--ease);
  color: #fff;
}
.card__overlay strong { font-size: 14px; font-weight: 650; letter-spacing: -0.02em; }
.card__overlay span { font-size: 11.5px; opacity: .78; }
.card__badge {
  position: absolute; top: 10px; left: 10px;
  font-size: 10.5px; letter-spacing: .06em;
  color: #fff; background: rgba(12,11,10,.55);
  backdrop-filter: blur(6px);
  padding: 3px 7px; border-radius: 2px;
  opacity: 0; transition: opacity .35s;
}

@media (hover: hover) {
  .card:hover .card__img { transform: scale(1.035); }
  .card:hover .card__overlay,
  .card:hover .card__badge { opacity: 1; }
}

.card__cap {
  display: flex; align-items: baseline; gap: 8px;
  padding: 9px 2px 0;
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--ink-soft);
}
.card__cap b { font-weight: 600; letter-spacing: -0.01em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card__cap span { color: var(--muted); font-size: 11.5px; margin-left: auto; white-space: nowrap; }

.empty {
  max-width: var(--max);
  margin: 0 auto;
  padding: 60px var(--pad) 100px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

/* ——— 소개 ——— */
.about { border-top: 1px solid var(--line); background: var(--paper-2); }
.about__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(52px, 8vw, 116px) var(--pad);
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: clamp(30px, 5vw, 90px);
}
.about__head h2 {
  margin: 0;
  font-size: clamp(28px, 3.6vw, 46px);
  line-height: 1.14;
  letter-spacing: -0.035em;
  font-weight: 700;
}
.about__body p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 52ch;
  word-break: keep-all;
}
.about__body strong { font-weight: 650; color: var(--ink); }
.about__list { list-style: none; margin: 26px 0 0; padding: 0; border-top: 1px solid var(--line); }
.about__list li {
  display: grid; grid-template-columns: 92px 1fr; gap: 12px;
  padding: 13px 0; border-bottom: 1px solid var(--line);
  font-size: 13.5px; color: var(--ink-soft);
}
.about__list b { font-weight: 650; color: var(--ink); font-size: 12.5px; letter-spacing: .02em; }

/* ——— 푸터 ——— */
.footer { border-top: 1px solid var(--line); }
.footer__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 34px var(--pad) 42px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  font-size: 12px;
  color: var(--muted);
}
.footer__brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.footer__brand p { margin: 0; font-size: 12px; line-height: 1.5; color: var(--ink-soft); }
.footer__notice { margin: 0; max-width: 78ch; line-height: 1.7; }
.footer__meta { margin: 6px 0 0; padding-top: 14px; border-top: 1px solid var(--line); font-family: var(--serif); letter-spacing: .03em; }

/* ——— 작품 상세 뷰어 ——— */
.viewer {
  position: fixed; inset: 0; z-index: 100;
  background: #0b0b0a;
  color: #efece6;
  display: flex; flex-direction: column;
  opacity: 0;
  transition: opacity .28s var(--ease);
}
.viewer[hidden] { display: none !important; }
.viewer.is-open { opacity: 1; }

.viewer__bar {
  flex: 0 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  padding: 12px clamp(14px, 3vw, 34px);
  border-bottom: 1px solid rgba(255,255,255,.09);
  background: rgba(11,11,10,.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.viewer__count { font-family: var(--serif); font-size: 12.5px; letter-spacing: .1em; color: rgba(239,236,230,.5); }
.viewer__nav { display: flex; gap: 6px; }

.vbtn {
  display: inline-flex; align-items: center; gap: 7px;
  background: none; border: 1px solid rgba(255,255,255,.16);
  color: #efece6; border-radius: 999px;
  padding: 7px 13px; font-size: 12.5px;
  transition: background .2s, border-color .2s, opacity .2s;
}
.vbtn:hover { background: rgba(255,255,255,.09); border-color: rgba(255,255,255,.3); }
.vbtn--icon { padding: 7px; border-radius: 999px; }
.vbtn:disabled { opacity: .28; cursor: default; }
.vbtn--close span { display: inline; }

.viewer__scroll { flex: 1 1 auto; overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; }

.viewer__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: clamp(18px, 3vw, 44px) clamp(14px, 3vw, 40px) clamp(50px, 8vw, 90px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 350px;
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}

.viewer__media { min-width: 0; }
.viewer__media figure { margin: 0 0 12px; }
.viewer__media img {
  width: 100%; height: auto;
  border-radius: 2px;
  background: #171614;
}

.viewer__info { position: sticky; top: 24px; }

.vinfo__eyebrow {
  margin: 0 0 12px;
  font-family: var(--serif); font-style: italic;
  font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase;
  color: rgba(239,236,230,.5);
}
.vinfo__title {
  margin: 0 0 6px;
  font-size: clamp(26px, 2.8vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.035em;
  font-weight: 700;
}
.vinfo__sub { margin: 0 0 18px; font-size: 14px; color: rgba(239,236,230,.62); letter-spacing: -0.01em; }
.vinfo__summary {
  margin: 0 0 22px; padding-left: 13px;
  border-left: 2px solid var(--accent);
  font-size: 14px; line-height: 1.7; color: rgba(239,236,230,.86);
  word-break: keep-all;
}

.vinfo__meta {
  margin: 0 0 22px;
  display: grid; grid-template-columns: 74px 1fr;
  gap: 1px 10px;
  border-top: 1px solid rgba(255,255,255,.11);
  padding-top: 4px;
}
.vinfo__meta dt {
  padding: 8px 0 2px;
  font-size: 11.5px; letter-spacing: .06em; color: rgba(239,236,230,.42);
  border-top: 1px solid rgba(255,255,255,.07);
}
.vinfo__meta dd {
  margin: 0; padding: 8px 0 2px;
  font-size: 13px; line-height: 1.55; color: rgba(239,236,230,.9);
  border-top: 1px solid rgba(255,255,255,.07);
}
.vinfo__meta dt:first-of-type, .vinfo__meta dd:first-of-type { border-top: 0; }

.vinfo__body p {
  margin: 0 0 12px;
  font-size: 13.5px; line-height: 1.85;
  color: rgba(239,236,230,.72);
  word-break: keep-all;
}

.vinfo__keywords { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 20px 0 0; padding: 0; }
.vinfo__keywords li {
  font-size: 11.5px; letter-spacing: .02em;
  color: rgba(239,236,230,.66);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 999px; padding: 4px 10px;
}

.vinfo__actions { display: flex; gap: 8px; margin: 26px 0 0; }
.btn {
  border: 1px solid rgba(255,255,255,.18);
  background: transparent; color: #efece6;
  border-radius: 999px; padding: 9px 16px;
  font-size: 12.5px;
  transition: background .2s, border-color .2s;
}
.btn:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.34); }
.btn.is-done { border-color: var(--accent); color: #ffd9cc; }

.vinfo__next { margin-top: 34px; border-top: 1px solid rgba(255,255,255,.11); padding-top: 16px; }
.nextcard {
  display: block; width: 100%; text-align: left;
  background: none; border: 0; padding: 0; color: inherit;
  display: flex; align-items: center; gap: 12px;
}
.nextcard img { width: 62px; height: 62px; object-fit: cover; border-radius: 2px; flex-shrink: 0; }
.nextcard .nc__label { font-size: 10.5px; letter-spacing: .14em; color: rgba(239,236,230,.4); text-transform: uppercase; }
.nextcard .nc__title { font-size: 13.5px; font-weight: 600; letter-spacing: -0.01em; }
.nextcard .nc__meta { font-size: 11.5px; color: rgba(239,236,230,.5); }
.nextcard:hover .nc__title { color: #fff; }

/* ——— 반응형 ——— */
@media (max-width: 1180px) {
  .grid { column-count: 3; }
  .viewer__inner { grid-template-columns: minmax(0, 1fr) 310px; gap: 32px; }
}

@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; gap: 30px; align-items: start; }
  .hero__aside { padding-bottom: 0; }
  .hero__lede { max-width: 46ch; margin-bottom: 24px; }
  .about__inner { grid-template-columns: 1fr; gap: 26px; }
  .viewer__inner { grid-template-columns: 1fr; gap: 22px; }
  .viewer__info { position: static; order: -1; }
  .vinfo__next { margin-top: 26px; }
  .topbar__nav { display: none; }
  .filters__row--tools { flex-wrap: wrap; gap: 8px; padding: 10px 0; }
  .chips--cat { order: 2; width: 100%; }
  .tools { order: 1; width: 100%; margin-left: 0; }
  .search { flex: 1 1 auto; }
  .search input { width: 100%; }
}

@media (max-width: 760px) {
  .grid { column-count: 2; }
  .stats { gap: 18px; }
  .about__list li { grid-template-columns: 76px 1fr; }
  .tag-proto { display: none; }
  .card__overlay { display: none; }
  .card__cap { flex-direction: column; gap: 0; }
  .card__cap span { margin-left: 0; }
  .eyebrow { font-size: 10.5px; letter-spacing: .13em; }
}

@media (max-width: 420px) {
  .brand__text b { font-size: 12.5px; }
  .brand__text span { font-size: 10.5px; }
  .chip { padding: 7px 12px; font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .card__img { transition: none; }
}