/* =========================================================
   王正源 Wang Cheng Yuan — 作品集
   沿用原 Cargo 站的結構：左側固定欄（自畫像 + 分類）＋ 右側縮圖牆
   ========================================================= */

:root {
  --bg: #ffffff;
  --sunk: #f1f1ef;
  --ink: #1a1a1a;
  --ink-soft: #5a5a56;
  --ink-faint: #9a9a94;
  --line: rgba(0, 0, 0, 0.12);

  --font-label: 'Poppins', 'Noto Sans TC', sans-serif;
  --font-body: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --sidebar-w: 250px;
  --measure: 44rem;
  --pad: 1.25rem;
}

@media (min-width: 900px) {
  :root { --pad: 2.25rem; }
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }

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

h1, h2, h3 { margin: 0; font-weight: 400; line-height: 1.25; }

p { margin: 0; }

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

/* ---------- 版面骨架 ---------- */

.layout { display: grid; grid-template-columns: 1fr; }

.content { min-width: 0; }

@media (min-width: 900px) {
  .layout { grid-template-columns: var(--sidebar-w) 1fr; }
}

/* ---------- 左側固定欄 ---------- */

.sidebar {
  padding: 2.5rem var(--pad);
  border-bottom: 1px solid var(--line);
}

@media (min-width: 900px) {
  .sidebar {
    position: sticky;
    top: 0;
    align-self: start;
    max-height: 100vh;
    overflow-y: auto;
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }
}

.sidebar__brand { display: block; }

/* 鉛筆稿是白紙掃描，用 multiply 讓紙面融進背景，不會看到方形邊界 */
.sidebar__portrait {
  width: 118px;
  height: auto;
  margin-bottom: 1.5rem;
  mix-blend-mode: multiply;
}

.sidebar__name {
  display: block;
  font-family: var(--font-label);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.sidebar__zh {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.9375rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.sidebar__year {
  display: block;
  font-family: var(--font-label);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
}

.sidebar__nav,
.sidebar__pages {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin-top: 2rem;
}

.sidebar__pages {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.filter,
.sidebar__page {
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  color: var(--ink-faint);
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.filter:hover,
.sidebar__page:hover { color: var(--ink); }
.filter.is-active { color: var(--ink); border-bottom-color: var(--ink); }

@media (min-width: 900px) {
  .sidebar__nav,
  .sidebar__pages { display: grid; gap: 0.375rem; justify-items: start; }
}

/* ---------- 首頁縮圖牆 ---------- */

.home { padding: 2.5rem var(--pad) 4rem; }

.home__count {
  font-family: var(--font-label);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1.75rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 2.25rem 1.5rem;
}

.card { display: block; }
.card[hidden] { display: none; }

.card__media {
  display: block;
  overflow: hidden;
  background: var(--sunk);
}

.card__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: opacity 0.3s;
}
.card:hover .card__image { opacity: 0.82; }

/* 只有影片、沒有劇照的作品 */
.card__video {
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 0.5rem;
  aspect-ratio: 4 / 3;
  font-size: 1rem;
  color: var(--ink-faint);
  background: var(--sunk);
  transition: color 0.2s;
}
.card__video::after {
  content: 'Video';
  font-family: var(--font-label);
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.card:hover .card__video { color: var(--ink); }

.card__caption { display: block; padding-top: 0.75rem; }

.card__title {
  display: block;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
}
.card:hover .card__title { text-decoration: underline; text-underline-offset: 0.25em; }

.card__credit {
  display: block;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.card__meta {
  display: block;
  margin-top: 0.25rem;
  font-family: var(--font-label);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ---------- 作品頁 ---------- */

.work { padding: 2.5rem var(--pad) 4rem; }

.work__head {
  max-width: var(--measure);
  padding-bottom: 3rem;
}

.work__back {
  font-family: var(--font-label);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.work__back:hover { color: var(--ink); }

.work__title {
  margin-top: 1.75rem;
  font-size: clamp(1.375rem, 3.5vw, 2.125rem);
  letter-spacing: 0.02em;
}

.work__meta {
  margin-top: 0.625rem;
  font-family: var(--font-label);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.work__credits {
  margin-top: 1.75rem;
  font-size: 0.9375rem;
  line-height: 1.95;
  color: var(--ink-soft);
}
.work__credits b { font-weight: 400; color: var(--ink); }
.work__credits a { border-bottom: 1px solid var(--ink-faint); }
.work__credits a:hover { border-bottom-color: var(--ink); }

.work__media {
  max-width: 1000px;
  display: grid;
  gap: 1.5rem;
}

.media { margin: 0; }

.media--video {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--sunk);
}
.media--video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.work__nav {
  max-width: 1000px;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 1.5rem;
  justify-content: space-between;
}

.work__nav-link { display: grid; gap: 0.25rem; }
.work__nav-link--next { text-align: right; margin-left: auto; }

.work__nav-label {
  font-family: var(--font-label);
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.work__nav-title { font-size: 0.9375rem; }
.work__nav-link:hover .work__nav-title { text-decoration: underline; text-underline-offset: 0.25em; }

/* ---------- 文字頁 ---------- */

.prose {
  max-width: var(--measure);
  padding: 2.5rem var(--pad) 5rem;
}

.prose__title {
  font-family: var(--font-label);
  font-weight: 400;
  font-size: 1.125rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.prose__section { margin-top: 2.75rem; }

.prose__heading {
  font-family: var(--font-label);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 2rem;
}

.prose__body { color: var(--ink-soft); }
.prose__body b { font-weight: 400; color: var(--ink); }
.prose__body ul { margin: 0; padding: 0; list-style: none; }
.prose__body a { border-bottom: 1px solid var(--ink-faint); }
.prose__body a:hover { border-bottom-color: var(--ink); }

.links { display: grid; gap: 0.75rem; }

.links__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1.5rem;
}

.links__label {
  flex: 0 0 7rem;
  font-family: var(--font-label);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.links__value { color: var(--ink); border-bottom: 1px solid var(--ink-faint); }
.links__value:hover { border-bottom-color: var(--ink); }

/* ---------- 頁尾 ---------- */

.site-footer {
  padding: 2.5rem var(--pad);
  border-top: 1px solid var(--line);
}

.site-footer__name { font-size: 0.875rem; letter-spacing: 0.1em; }

.site-footer__meta {
  margin-top: 0.375rem;
  font-family: var(--font-label);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ---------- 動態偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}