/* ============================================================
   王后 WANG HOU — Portfolio
   Design system adapted from caiguangxi.com editorial style
   ============================================================ */

:root {
  --color-bg: #fafafa;
  --color-fg: #000;
  --color-muted: #00000080;
  --color-line: #00000029;
  --color-surface: #0000000a;
  --color-control-bg: #0000000f;
  --page-padding: 20px;
  --z-page-transition: 30;
  --z-site-copyright: 40;
  --z-preloader: 50;
  --font-body: Georgia, "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0a0a0a;
    --color-fg: #fff;
    --color-muted: #ffffff80;
    --color-line: #ffffff2e;
    --color-surface: #ffffff0f;
    --color-control-bg: #ffffff14;
    color-scheme: dark;
  }
}
:root[data-theme="light"] {
  --color-bg: #fafafa;
  --color-fg: #000;
  --color-muted: #00000080;
  --color-line: #00000029;
  --color-surface: #0000000a;
  --color-control-bg: #0000000f;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --color-bg: #0a0a0a;
  --color-fg: #fff;
  --color-muted: #ffffff80;
  --color-line: #ffffff2e;
  --color-surface: #ffffff0f;
  --color-control-bg: #ffffff14;
  color-scheme: dark;
}

* , *::before, *::after { box-sizing: border-box; }
html, body { width: 100%; height: 100%; }
html { background-color: var(--color-bg); scrollbar-width: thin; scrollbar-color: var(--color-muted) transparent; }
body {
  min-height: 100dvh;
  margin: 0;
  color: var(--color-fg);
  background-color: var(--color-bg);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 150%;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color 0.25s, color 0.25s;
}
body.is-preloading { pointer-events: none; }
body.is-preloading .site-nav,
body.is-preloading .site-copyright,
body.is-preloading .portfolio-gallery,
body.is-preloading .work-detail,
body.is-preloading .info-page { visibility: hidden; }

a { color: inherit; text-decoration: none; }
a:hover { text-underline-offset: 0.22em; text-decoration: underline; }
.site-nav a:hover, .site-nav a:focus-visible, .work-next a:hover { text-decoration: none; }
img { max-width: 100%; }
::selection { background: var(--color-fg); color: var(--color-bg); }

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

/* ---------- text reveal ---------- */
[data-text-reveal] { visibility: hidden; }
[data-text-reveal][data-text-reveal-ready="true"] { visibility: visible; }
.text-reveal-word {
  vertical-align: top;
  margin-bottom: -0.16em;
  padding-bottom: 0.16em;
  display: inline-block;
  overflow: hidden;
}
.text-reveal-word__inner {
  will-change: opacity, transform;
  display: inline-block;
  transform: translateY(110%);
}
.text-reveal-word.is-in .text-reveal-word__inner {
  transform: translateY(0);
  transition: transform 0.9s cubic-bezier(0.28, 0.88, 0, 1);
}

/* ---------- preloader ---------- */
.preloader {
  z-index: var(--z-preloader);
  background: var(--color-bg);
  opacity: 1;
  pointer-events: auto;
  touch-action: none;
  place-items: center;
  transition: opacity 0.4s, visibility 0.4s;
  display: grid;
  position: fixed;
  inset: 0;
}
.preloader.is-done { visibility: hidden; opacity: 0; pointer-events: none; }
.preloader__number {
  color: var(--color-fg);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
  font-size: 20px;
  line-height: 1;
}

/* ---------- page transition ---------- */
.page-fade {
  z-index: var(--z-page-transition);
  background: var(--color-bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease;
  position: fixed;
  inset: 0;
}
.page-fade.is-active { opacity: 1; pointer-events: auto; }

/* ---------- site nav ---------- */
.site-nav {
  top: var(--page-padding);
  right: var(--page-padding);
  left: var(--page-padding);
  z-index: 4;
  color: var(--color-fg);
  justify-content: space-between;
  align-items: center;
  display: flex;
  position: fixed;
}
.site-nav__brand { pointer-events: auto; font-size: 13px; }
.site-nav__links { pointer-events: auto; align-items: center; gap: 30px; display: flex; }
.site-nav__links a { font-size: 13px; }
.site-nav__links a[aria-current="page"] { text-decoration: none; }
.theme-toggle {
  border: 1px solid var(--color-line);
  background: var(--color-fg);
  cursor: pointer;
  border-radius: 50%;
  width: 12px;
  height: 12px;
  padding: 0;
  transition: transform 0.12s;
  display: block;
}
.theme-toggle:hover { transform: none; }
.theme-toggle:active { transform: scale(0.93); }
.theme-toggle:focus-visible { outline: 1px solid var(--color-fg); outline-offset: 4px; }

/* ---------- site copyright ---------- */
.site-copyright {
  bottom: var(--page-padding);
  left: var(--page-padding);
  z-index: var(--z-site-copyright);
  color: var(--color-fg);
  pointer-events: none;
  margin: 0;
  transition: opacity 0.24s;
  position: fixed;
  font-size: 13px;
}

/* ============================================================
   HOME — horizontal gallery
   ============================================================ */
.portfolio-page { overscroll-behavior: none; height: 100dvh; min-height: 100dvh; position: relative; overflow: hidden; }
.portfolio-gallery {
  --gallery-item-width: min(48vw, 48vh);
  cursor: default;
  -webkit-user-select: none;
  user-select: none;
  width: 100vw;
  height: 100dvh;
  position: relative;
}
.portfolio-gallery__wrapper {
  width: 100%;
  height: 100%;
  opacity: 1;
  touch-action: pan-x;
  transition: opacity 0.24s;
  display: flex;
  position: relative;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}
.portfolio-gallery__wrapper::-webkit-scrollbar { display: none; }
.portfolio-gallery__track {
  height: 100%;
  padding-inline: max(var(--page-padding), calc((100vw - var(--gallery-item-width)) / 2));
  will-change: transform;
  align-items: center;
  gap: 20px;
  display: flex;
}
.portfolio-gallery__item { width: var(--gallery-item-width); flex: none; }
.portfolio-gallery__link { display: block; }
.portfolio-gallery__link:hover, .portfolio-gallery__link:focus-visible { text-decoration: none; }
.portfolio-gallery__media {
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  aspect-ratio: 4 / 3;
  width: 100%;
  height: 52vh;
  max-height: 52vh;
  display: block;
  position: relative;
  overflow: hidden;
}
.portfolio-gallery__image {
  filter: saturate(0);
  object-fit: cover;
  width: 100%;
  height: 100%;
  transition: filter 0.6s cubic-bezier(0.28, 0.88, 0, 1), transform 0.8s cubic-bezier(0.28, 0.88, 0, 1);
  position: absolute;
  inset: 0;
}
.portfolio-gallery__link:hover .portfolio-gallery__image,
.portfolio-gallery__link:focus-visible .portfolio-gallery__image { filter: saturate(1); transform: scale(1.02); }
.portfolio-gallery__caption {
  opacity: 1;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding-top: 12px;
  transition: opacity 0.22s, transform 0.42s cubic-bezier(0.7, 0.08, 0.18, 1);
  display: flex;
  transform: translate(0, 0);
}
.portfolio-gallery__caption-title { color: var(--color-fg); font-size: 16px; letter-spacing: -0.01em; }
.portfolio-gallery__caption-type { color: var(--color-muted); font-size: 13px; }
.gallery-counter {
  bottom: var(--page-padding);
  right: var(--page-padding);
  z-index: var(--z-site-copyright);
  color: var(--color-fg);
  pointer-events: none;
  margin: 0;
  position: fixed;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
}
.gallery-hint {
  top: 50%;
  right: var(--page-padding);
  z-index: 3;
  color: var(--color-muted);
  pointer-events: none;
  position: fixed;
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: 0.12em;
  opacity: 0.7;
}

/* ============================================================
   WORK DETAIL
   ============================================================ */
.work-detail {
  --work-detail-cover-top: 38.2dvh;
  --work-detail-title-size: 70px;
  --work-detail-text-width: min(72vw, 900px);
  background: var(--color-bg);
  opacity: 1;
  min-height: 100dvh;
  position: relative;
  overflow-x: hidden;
  transform: translate(0, 0);
}
.work-detail__hero {
  top: calc(var(--work-detail-cover-top) - var(--page-padding));
  right: var(--page-padding);
  left: var(--page-padding);
  z-index: 1;
  pointer-events: none;
  position: absolute;
  transform: translateY(-100%);
}
.work-detail__hero h1 {
  font-size: var(--work-detail-title-size);
  letter-spacing: -0.055em;
  text-wrap: balance;
  margin: 0;
  font-weight: 500;
  line-height: 1.05;
}
.work-detail__hero .work-detail__subtitle {
  margin: 14px 0 0;
  color: var(--color-muted);
  font-size: 15px;
  letter-spacing: 0;
}
.work-detail__cover {
  width: calc(100vw - var(--page-padding) * 2);
  margin: var(--work-detail-cover-top) var(--page-padding) 0;
  background: var(--color-surface);
  display: block;
  overflow: hidden;
  transform: translateZ(0);
}
.work-detail__cover img { width: 100%; height: auto; display: block; }
[data-cover-reveal]:not([data-cover-reveal-ready="true"]) { visibility: hidden; opacity: 0; transform: translateY(28px); }
[data-cover-reveal] { transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.28, 0.88, 0, 1); }

.work-detail__intro {
  width: 100vw;
  min-height: 100dvh;
  padding: var(--page-padding);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 48px;
  display: flex;
}
.work-detail__copy {
  flex-direction: column;
  gap: 24px;
  display: flex;
  width: var(--work-detail-text-width);
  max-width: calc(100vw - var(--page-padding) * 2);
}
.work-detail__copy p {
  letter-spacing: -0.02em;
  font-size: 34px;
  line-height: 1.5;
  font-weight: 400;
  margin: 0;
  text-wrap: pretty;
}
.work-detail__stats {
  width: var(--work-detail-text-width);
  max-width: calc(100vw - var(--page-padding) * 2);
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  display: grid;
  border-top: 1px solid var(--color-line);
  padding-top: 24px;
}
.work-detail__stat { flex-direction: column; gap: 4px; display: flex; }
.work-detail__stat-value { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 26px; letter-spacing: -0.02em; }
.work-detail__stat-label { color: var(--color-muted); font-size: 13px; }
.work-detail__credits {
  width: var(--work-detail-text-width);
  max-width: calc(100vw - var(--page-padding) * 2);
  flex-direction: column;
  gap: 0;
  margin: 0;
  padding: 0;
  display: flex;
  list-style: none;
}
.work-detail__credit { line-height: 150%; display: block; }
.work-detail__credit dt, .work-detail__credit dd { margin: 0; display: inline; }
.work-detail__credit dt { color: var(--color-muted); }
.work-detail__credit dt::after { content: "："; }
.work-detail__credit dd { color: var(--color-fg); }

.work-detail__media { gap: var(--page-padding); padding: var(--page-padding); flex-wrap: wrap; display: flex; }
.work-detail__media-block {
  flex-direction: column;
  gap: 10px;
  width: 100%;
  display: flex;
  margin: 0;
}
.work-detail__media-block img {
  background: var(--color-surface);
  width: 100%;
  height: auto;
  display: block;
}
.work-detail__media-block figcaption { color: var(--color-muted); font-size: 13px; }
[data-media-reveal]:not([data-media-reveal-ready="true"]) { visibility: hidden; opacity: 0; transform: translateY(24px); }
[data-media-reveal] { transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.28, 0.88, 0, 1); }

.work-next { min-height: 119px; padding: 10px var(--page-padding) 48px; justify-content: center; align-items: center; display: flex; }
.work-next__inner {
  width: var(--work-detail-text-width);
  max-width: calc(100vw - var(--page-padding) * 2);
  align-items: center;
  gap: 40px;
  display: flex;
}
.work-next__meta { flex: 0 auto; align-items: center; gap: 12px; min-width: 0; display: flex; }
.work-next__label { color: var(--color-muted); letter-spacing: -0.01em; white-space: nowrap; flex: none; margin: 0; font-size: 13px; line-height: 150%; }
.work-next__title { min-width: 0; color: var(--color-fg); white-space: normal; flex: auto; margin: 0; font-size: 20px; letter-spacing: -0.02em; }
.work-next__track { background: var(--color-line); flex: auto; min-width: 80px; height: 1px; position: relative; overflow: hidden; }
.work-next__bar { width: calc(var(--work-next-progress, 0) * 100%); background: var(--color-fg); transform-origin: 0; position: absolute; inset: 0 auto 0 0; }

/* ============================================================
   INFO
   ============================================================ */
.info-page {
  --info-content-left: clamp(300px, 47.34vw, 780px);
  --info-intro-width: min(46.3vw, 800px);
  min-height: 100dvh;
  padding: 160px var(--page-padding) 96px;
  color: var(--color-fg);
  background: var(--color-bg);
  position: relative;
}
.info-page__title {
  position: fixed;
  left: var(--page-padding);
  top: 96px;
  margin: 0;
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--color-fg);
}
.info-page__title span { display: block; font-size: 14px; font-style: normal; letter-spacing: 0.02em; color: var(--color-muted); margin-top: 10px; }
.info-page__intro { width: var(--info-intro-width); margin-left: var(--info-content-left); }
.info-page__intro p {
  letter-spacing: -0.01em;
  text-wrap: balance;
  max-width: 800px;
  font-size: 32px;
  line-height: 1.55;
  font-weight: 400;
  margin: 0;
}
.info-page__details {
  width: var(--info-intro-width);
  margin-top: 100px;
  margin-left: var(--info-content-left);
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: clamp(64px, 9.26vw, 160px);
  display: grid;
}
.info-list { flex-direction: column; gap: 20px; display: flex; }
.info-list h2 { font-style: italic; font-weight: 400; font-size: 24px; letter-spacing: -0.02em; margin: 0; }
.info-list ul { flex-direction: column; gap: 18px; margin: 0; padding: 0; list-style: none; display: flex; }
.info-list li { flex-direction: column; display: flex; }
.info-list li p { line-height: 150%; margin: 0; }
.info-list li p + p { color: var(--color-muted); }
.info-page__contact { width: var(--info-intro-width); margin-top: 100px; margin-left: var(--info-content-left); line-height: 150%; }
.info-page__social, .info-page__copyright { margin: 0; }
.info-page__social { font-size: 16px; }
.info-page__social a { text-underline-offset: 0.3em; }
.info-page__social .sep { color: var(--color-muted); }
.info-page__contact-note { color: var(--color-muted); font-size: 13px; margin: 10px 0 0; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .work-detail { --work-detail-title-size: clamp(46px, 8vw, 64px); }
  .work-detail__copy p { font-size: 28px; }
  .info-page__intro p { font-size: 26px; }
  .work-next__inner { gap: 40px; }
}
@media (max-width: 700px) {
  .work-detail { --work-detail-title-size: clamp(34px, 9.6vw, 48px); --work-detail-text-width: 100%; }
  .work-detail__copy p { font-size: 24px; }
  .portfolio-gallery { --gallery-item-width: 82vw; }
  .portfolio-gallery__track { padding-inline: var(--page-padding); }
  .portfolio-gallery__media { height: 46vh; max-height: 46vh; }
  .site-nav__links { gap: 22px; }
  .work-next { min-height: 96px; padding-bottom: 56px; }
  .work-next__inner { grid-template-columns: minmax(0, 1fr); align-items: start; row-gap: 8px; display: grid; }
  .work-next__meta { align-items: flex-start; width: 100%; flex-direction: column; gap: 6px; }
  .work-next__track { grid-area: 2 / 1; width: 100%; min-width: 0; }
  .work-detail__stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .work-detail__stat-value { font-size: 19px; }
  .info-page {
    --info-content-left: 0px;
    --info-intro-width: 100%;
    padding: 120px var(--page-padding) 96px;
  }
  .info-page__title { position: static; }
  .info-page__intro, .info-page__details, .info-page__contact { width: 100%; margin-left: 0; }
  .info-page__details { gap: 48px; grid-template-columns: 1fr; margin-top: 72px; }
  .info-page__contact { margin-top: 72px; }
  .gallery-hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
  .text-reveal-word__inner { transform: none !important; }
}