/* 이하늘 포트폴리오 — 근검정 바탕, 헤어라인 구획, 호박색 신호 하나 */

:root {
  --bg:      #0B0C0E;
  --panel:   #121317;
  --panel-2: #171A1F;
  --line:    #23262B;
  --line-hi: #333840;
  --fg:      #EEEFF2;
  --fg-2:    #AFB4BC;
  --fg-3:    #878D96;
  --amber:   #FFB454;
  --amber-2: #E39230;

  --sans: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --wrap: 1080px;
  --pad: clamp(20px, 5vw, 40px);
  --r: 10px;

  /* 지수형 이완 — 이미 보이는 상태에서 자리를 잡는 움직임 */
  --ease: cubic-bezier(.16, 1, .3, 1);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* 한글은 어절 단위로 끊는다. 없으면 '스/피커'처럼 낱말이 갈라진다. */
  word-break: keep-all;
  overflow-wrap: anywhere;
}

h1, h2, h3 { margin: 0; line-height: 1.22; letter-spacing: -0.035em; font-weight: 600; }
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; }
li { list-style: none; }
img { display: block; max-width: 100%; height: auto; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.mono { font-family: var(--mono); font-size: 0.86em; letter-spacing: 0; font-variant-numeric: tabular-nums; }
.muted { color: var(--fg-3); }

:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }

.skip {
  position: fixed; top: 10px; left: 10px; z-index: 200;
  padding: 10px 16px; background: var(--amber); color: #14161A;
  border-radius: 8px; font-weight: 600;
  transform: translateY(-200%);
}
.skip:focus { transform: none; }

/* ── 스크롤 진행 ─────────────────────────────── */
.progress {
  position: fixed; inset: 0 0 auto; height: 1px; z-index: 90;
  background: var(--line);
}
.progress span {
  display: block; height: 100%; width: 100%;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

/* ── 상단 바 ─────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 80;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease);
}
.topbar.is-stuck { border-bottom-color: var(--line); }

.topbar__in {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; height: 60px;
}
.topbar__id { font-weight: 600; letter-spacing: -0.03em; }

.topbar__nav { display: flex; gap: 4px; }
.topbar__nav a {
  position: relative;
  padding: 7px 12px; border-radius: 7px;
  font-size: 14px; color: var(--fg-3);
  transition: color .2s var(--ease), background-color .2s var(--ease);
}
.topbar__nav a:hover { color: var(--fg); background: var(--panel); }
.topbar__nav a.is-on { color: var(--fg); }
.topbar__nav a.is-on::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 2px;
  height: 1.5px; background: var(--amber); border-radius: 2px;
}

/* ── 히어로 ──────────────────────────────────── */
.hero {
  padding-block: clamp(72px, 15vh, 148px) clamp(64px, 12vh, 120px);
  border-bottom: 1px solid var(--line);
}

.hero__name {
  font-size: clamp(3.4rem, 12vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.055em;
  margin-bottom: clamp(20px, 4vw, 32px);
}

.hero__line {
  font-size: clamp(1.25rem, 3.4vw, 1.85rem);
  line-height: 1.45;
  letter-spacing: -0.035em;
  font-weight: 500;
  max-width: 26ch;
  text-wrap: balance;
}

.hero__sub {
  margin-top: 18px;
  color: var(--fg-2);
  font-size: clamp(0.98rem, 2vw, 1.05rem);
  max-width: 50ch;
}

.layers {
  display: flex; flex-wrap: wrap;
  margin-top: clamp(30px, 5vw, 44px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.layers li {
  flex: 1 1 auto;
  padding: 13px 16px;
  font-size: 0.9rem;
  color: var(--fg-2);
  border-right: 1px solid var(--line);
}
.layers li:first-child { padding-left: 0; }
.layers li:last-child { border-right: 0; }

.hero__act {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-top: clamp(28px, 5vw, 40px);
}

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  height: 44px; padding-inline: 16px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--panel);
  font-size: 14px; font-weight: 500;
  transition: border-color .2s var(--ease), background-color .2s var(--ease), transform .2s var(--ease);
}
.btn:hover { border-color: var(--line-hi); background: var(--panel-2); }
.btn:active { transform: translateY(1px); }
.btn__ico { display: grid; place-items: center; width: 18px; height: 18px; flex: none; color: var(--fg-3); }
.btn__ico svg { width: 100%; height: 100%; }
.btn:hover .btn__ico { color: var(--fg-2); }

.btn--primary {
  background: var(--amber); border-color: var(--amber); color: #17181B; font-weight: 600;
}
.btn--primary .btn__ico { color: #17181B; opacity: .75; }
.btn--primary:hover { background: var(--amber-2); border-color: var(--amber-2); }
.btn--primary:hover .btn__ico { color: #17181B; }
.btn--primary.is-done { background: var(--panel); border-color: var(--line-hi); color: var(--fg); }
.btn--primary.is-done .btn__ico { color: var(--amber); opacity: 1; }

.hero__now {
  display: flex; align-items: center; gap: 9px;
  margin-top: clamp(30px, 5vw, 42px);
  color: var(--fg-3); font-size: 0.9rem;
}
.dot {
  width: 6px; height: 6px; border-radius: 50%; flex: none;
  background: var(--amber);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--amber) 18%, transparent);
}

/* ── 섹션 ────────────────────────────────────── */
.sec { padding-block: clamp(64px, 11vw, 108px); border-bottom: 1px solid var(--line); }

.sec__head { margin-bottom: clamp(38px, 6vw, 60px); }
.sec__head h2 { font-size: clamp(1.5rem, 4vw, 2rem); }
.sec__note { margin-top: 10px; color: var(--fg-3); font-size: 0.92rem; }

/* ── 프로젝트 ────────────────────────────────── */
.proj { padding-block: clamp(40px, 6vw, 60px); border-top: 1px solid var(--line); }
.proj:first-of-type { border-top: 0; padding-top: 0; }

.proj__top { margin-bottom: 20px; }
.proj__top h3 { font-size: clamp(1.45rem, 4vw, 1.9rem); letter-spacing: -0.04em; }
.proj__kind { margin-top: 5px; color: var(--fg-3); font-size: 0.95rem; }

.proj__media {
  position: relative;
  display: grid; place-items: center;
  aspect-ratio: 4 / 3;
  margin-bottom: 28px;
  padding: clamp(18px, 3.5vw, 34px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  transition: border-color .3s var(--ease);
}
.proj__media img {
  max-width: 100%; max-height: 100%;
  width: auto; object-fit: contain;
  border-radius: 3px;
  box-shadow: 0 12px 34px rgba(0, 0, 0, .5), 0 2px 6px rgba(0, 0, 0, .4);
  transition: transform .5s var(--ease);
}
.proj__media:hover { border-color: var(--line-hi); }
.proj__media:hover img { transform: scale(1.018); }

.proj__zoom {
  position: absolute; right: 12px; bottom: 12px;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; border-radius: 7px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--line-hi);
  font-size: 12.5px; color: var(--fg-2);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.proj__zoom .mono { color: var(--amber); }
.proj__media:hover .proj__zoom { color: var(--fg); border-color: var(--fg-3); }

.meta {
  display: grid; gap: 7px;
  padding-block: 14px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 22px;
}
@media (min-width: 520px) {
  .meta { display: flex; flex-wrap: wrap; gap: 8px 28px; }
}
.meta > div { display: flex; align-items: baseline; gap: 10px; }
.meta dt { color: var(--fg-3); font-size: 0.8rem; flex: none; }
.meta dd { font-size: 0.9rem; color: var(--fg-2); }

.proj__desc { color: var(--fg-2); max-width: 62ch; }

.bul { margin-top: 18px; display: grid; gap: 9px; max-width: 66ch; }
.bul li {
  position: relative; padding-left: 18px;
  color: var(--fg-2); font-size: 0.94rem; line-height: 1.65;
}
.bul li::before {
  content: ""; position: absolute; left: 2px; top: 0.72em;
  width: 5px; height: 1px; background: var(--fg-3);
}
.bul b { color: var(--fg); font-weight: 600; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 24px; }
.tags li {
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--fg-2);
  font-size: 12.5px; font-weight: 500; letter-spacing: -0.005em;
}
.tags--lg li { padding: 7px 13px; font-size: 13px; }

/* 대표작은 미디어를 크게, 이후 항목은 조밀하게 — 스크롤 밀도를 바꾼다 */
@media (min-width: 860px) {
  .proj { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(32px, 5vw, 56px); align-items: start; }
  .proj__media { margin-bottom: 0; position: sticky; top: 92px; }
  .proj--lead { grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); }
  .proj--lead .proj__top h3 { font-size: clamp(1.9rem, 3.4vw, 2.4rem); }
  .proj:nth-of-type(even) .proj__media { order: 2; }
  .proj--text { grid-template-columns: 1fr; max-width: 66ch; }
}

/* ── 경력 ────────────────────────────────────── */
.tl { display: grid; gap: 0; }
.tl__item { padding-block: clamp(26px, 4vw, 36px); border-top: 1px solid var(--line); }
.tl__item:first-child { border-top: 0; padding-top: 0; }
.tl__when { color: var(--fg-3); margin-bottom: 12px; }
.tl__what h3 { font-size: 1.15rem; margin-bottom: 14px; }
.tl__role { color: var(--fg-3); font-weight: 400; font-size: 0.86rem; margin-left: 8px; }
.tl__item--now .tl__when { color: var(--amber); }

@media (min-width: 760px) {
  .tl__item { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 32px; }
  .tl__when { margin-bottom: 0; padding-top: 3px; }
}

/* ── 기술 ────────────────────────────────────── */
.stack { display: grid; gap: clamp(26px, 4vw, 38px); }
.stack__g h3 { font-size: 0.82rem; color: var(--fg-3); font-weight: 500; letter-spacing: 0.02em; }
.stack__g .tags { margin-top: 12px; }

@media (min-width: 760px) {
  .stack { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(30px, 4vw, 44px) clamp(32px, 5vw, 60px); }
}

/* ── 마무리 ──────────────────────────────────── */
.sec--end { border-bottom: 0; padding-bottom: clamp(56px, 9vw, 88px); }
.end__h {
  font-size: clamp(1.9rem, 6.5vw, 3.2rem);
  letter-spacing: -0.045em; line-height: 1.28;
  text-wrap: balance;
}
.end__links {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 18px 36px;
  margin-top: clamp(32px, 5vw, 48px);
  padding-top: clamp(24px, 4vw, 32px);
  border-top: 1px solid var(--line);
}
.end__mail {
  font-size: clamp(1.05rem, 3vw, 1.4rem);
  font-weight: 500; letter-spacing: -0.03em;
  border-bottom: 1px solid var(--line-hi);
  padding-bottom: 3px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.end__mail:hover { color: var(--amber); border-color: var(--amber); }
.end__side { display: flex; gap: 22px; margin-left: auto; }
.end__side a { color: var(--fg-3); font-size: 0.95rem; transition: color .2s var(--ease); }
.end__side a span { margin-left: 5px; font-size: 0.85em; }
.end__side a:hover { color: var(--fg); }
.end__foot { margin-top: clamp(40px, 7vw, 64px); color: var(--fg-3); font-size: 0.85rem; }

/* ── 라이트박스 ──────────────────────────────── */
.lb {
  position: fixed; inset: 0; z-index: 150;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 64px;
  align-items: center;
  background: rgba(5, 6, 7, .94);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity .28s var(--ease);
}
.lb[hidden] { display: none; }
.lb.is-open { opacity: 1; }

.lb__fig { grid-column: 2; margin: 0; display: grid; gap: 14px; justify-items: center; padding-block: 68px 56px; }
.lb__slot { display: grid; place-items: center; width: 100%; }
.lb__slot img {
  max-width: 100%; max-height: calc(100dvh - 172px);
  width: auto; object-fit: contain;
  border-radius: 5px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .65);
}
.lb__cap { color: var(--fg-3); font-size: 0.85rem; text-align: center; max-width: 60ch; }

.lb__close {
  position: absolute; top: 16px; right: 16px;
  width: 40px; height: 40px; display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 9px;
  background: var(--panel); color: var(--fg-2);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.lb__close svg { width: 20px; height: 20px; }
.lb__close:hover { color: var(--fg); border-color: var(--line-hi); }

.lb__nav {
  width: 44px; height: 44px; display: grid; place-items: center;
  justify-self: center;
  border: 1px solid var(--line); border-radius: 50%;
  background: var(--panel); color: var(--fg-2);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.lb__nav svg { width: 20px; height: 20px; }
.lb__nav:hover { color: var(--fg); border-color: var(--line-hi); }
.lb__nav--prev { grid-column: 1; }
.lb__nav--next { grid-column: 3; }
.lb__nav[hidden] { display: none; }

.lb__count {
  position: absolute; left: 50%; bottom: 20px; transform: translateX(-50%);
  color: var(--fg-3);
}

@media (max-width: 720px) {
  .lb { grid-template-columns: 1fr; }
  .lb__fig { grid-column: 1; padding-inline: 16px; }
  .lb__nav { position: absolute; bottom: 16px; }
  .lb__nav--prev { left: 22%; }
  .lb__nav--next { right: 22%; left: auto; }
  .lb__count { bottom: 30px; }
}

/* ── 토스트 ──────────────────────────────────── */
.toast {
  position: fixed; left: 50%; bottom: 26px; z-index: 160;
  transform: translate(-50%, 14px);
  padding: 11px 18px; border-radius: 9px;
  background: var(--panel-2); border: 1px solid var(--line-hi);
  color: var(--fg); font-size: 14px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, .55);
  opacity: 0; pointer-events: none;
  transition: opacity .25s var(--ease), transform .35s var(--ease);
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ── 진입 움직임 ─────────────────────────────── */
/* 기본은 이미 보이는 상태. 스크립트가 붙을 때만 자리를 잡는다. */
.js [data-stagger] { opacity: 0; transform: translateY(14px); }
.js .hero.is-in [data-stagger] {
  opacity: 1; transform: none;
  transition: opacity .7s var(--ease), transform .9s var(--ease);
  transition-delay: calc(var(--i, 0) * 70ms);
}

.js .proj__media { clip-path: inset(0 0 12% 0); opacity: .6; }
.js .proj.is-in .proj__media {
  clip-path: inset(0 0 0 0); opacity: 1;
  transition: clip-path 1s var(--ease), opacity .7s var(--ease);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-stagger],
  .js .proj__media { opacity: 1 !important; transform: none !important; clip-path: none !important; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}