/*
Theme Name: Shiroiwa Ni-mei
Theme URI: https://shiroiwa.jp
Author: Toshi Shiroiwa
Description: 白岩伸介(日本画)と白岩利一(文筆)、二人の白岩のための二枚看板テーマ。胡粉の地に墨、岩群青、朱の落款。
Version: 1.2.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
Text Domain: shiroiwa-nimei
*/

/* ---------- tokens ---------- */
:root {
  --gofun: #F2EFE6;      /* 胡粉 地色 */
  --gofun-deep: #E9E4D6; /* 面の切替 */
  --sumi: #1C1B17;       /* 墨 */
  --usuzumi: #5B564B;    /* 薄墨 */
  --gunjo: #23477E;      /* 岩群青 Artist */
  --shu: #B4342A;        /* 朱 落款のみ */
  --kin: #AE8F3E;        /* 金 細線 */
  --font-display: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-ui: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
  --maxw: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--gofun);
  color: var(--sumi);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--gunjo); outline-offset: 3px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.site-header {
  position: absolute; inset: 0 0 auto 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 28px;
  font-family: var(--font-ui);
}
.site-header.solid { position: static; background: var(--gofun); border-bottom: 1px solid var(--gofun-deep); }
.brand { font-family: var(--font-display); font-size: 18px; letter-spacing: 0.28em; }
.brand span.en { display: block; font-family: var(--font-ui); font-size: 10px; letter-spacing: 0.34em; color: var(--usuzumi); }
.site-nav ul { list-style: none; display: flex; gap: 26px; margin: 0; padding: 0; font-size: 13px; letter-spacing: 0.18em; }
.site-nav a { padding: 6px 0; border-bottom: 1px solid transparent; transition: border-color .25s; }
.site-nav a:hover { border-bottom-color: var(--kin); }
.nav-toggle { display: none; }

/* ---------- split hero ---------- */
.hero-split {
  display: grid; grid-template-columns: 1fr 1fr;
  min-height: 100svh; position: relative;
}
.hero-half {
  position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  padding: 120px 32px 72px;
  transition: flex-grow .5s;
  background-size: cover; background-position: center;
}
.hero-half::before { /* 和紙の被膜: 写真の上に胡粉を一枚かける */
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(rgba(242,239,230,0.82), rgba(242,239,230,0.68));
  transition: background .4s;
}
.hero-half:hover::before {
  background: linear-gradient(rgba(242,239,230,0.62), rgba(242,239,230,0.42));
}
.hero-half.artist { border-right: 1px solid rgba(28,27,23,0.25); }

.hero-inner { position: relative; text-align: center; }

.tate {
  writing-mode: vertical-rl; text-orientation: mixed;
  margin: 0 auto; font-family: var(--font-display);
}
.hero-kanji {
  font-size: clamp(64px, 9vw, 118px);
  line-height: 1; font-weight: 500; letter-spacing: 0;
}
.hero-name {
  font-size: clamp(20px, 2.4vw, 30px);
  letter-spacing: 0.42em; margin-top: 18px; height: 11em;
}
.hero-role {
  font-family: var(--font-ui); font-size: 11px; letter-spacing: 0.3em;
  color: var(--usuzumi); margin-top: 26px;
}
.hero-half.artist .hero-kanji { color: var(--gunjo); }
.hero-half.author .hero-kanji { color: var(--sumi); }

.rakkan {
  display: inline-grid; place-items: center;
  width: 44px; height: 44px; margin-top: 28px;
  background: var(--shu); color: var(--gofun);
  font-family: var(--font-display); font-size: 20px;
  border-radius: 4px;
  box-shadow: 0 0 0 1px rgba(180,52,42,0.35);
  transform: rotate(-2deg);
}
.hero-cta {
  display: inline-block; margin-top: 30px;
  font-family: var(--font-ui); font-size: 12px; letter-spacing: 0.26em;
  border-bottom: 1px solid var(--sumi); padding-bottom: 4px;
}
.hero-half a.hero-link { position: absolute; inset: 0; z-index: 2; }

.hero-scroll {
  position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-ui); font-size: 10px; letter-spacing: 0.4em;
  color: var(--usuzumi); z-index: 3;
}

/* ---------- sections ---------- */
.section { padding: 96px 0; }
.section.alt { background: var(--gofun-deep); }
.sec-head { display: flex; align-items: baseline; gap: 20px; margin-bottom: 44px; }
.sec-title { font-family: var(--font-display); font-size: 30px; letter-spacing: 0.22em; margin: 0; }
.sec-title .marker { color: var(--gunjo); margin-right: 12px; }
.section.author-sec .sec-title .marker { color: var(--sumi); }
.sec-en { font-family: var(--font-ui); font-size: 11px; letter-spacing: 0.3em; color: var(--usuzumi); }
.sec-rule { flex: 1; height: 1px; background: var(--kin); opacity: .6; }

/* works grid */
.works-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.work-card figure { margin: 0; overflow: hidden; background: #fff; }
.work-card img { aspect-ratio: 4 / 3.3; object-fit: cover; width: 100%; transition: transform .6s; }
.work-card:hover img { transform: scale(1.03); }
.work-card figcaption {
  font-family: var(--font-ui); font-size: 12px; letter-spacing: 0.16em;
  color: var(--usuzumi); padding-top: 10px;
}

/* books */
.books-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.book-card { background: #fff; border: 1px solid var(--gofun-deep); padding: 26px; }
.book-title { font-family: var(--font-display); font-size: 19px; margin: 0 0 8px; letter-spacing: 0.08em; }
.book-meta { font-family: var(--font-ui); font-size: 11px; letter-spacing: 0.2em; color: var(--usuzumi); margin-bottom: 12px; }
.book-desc { font-size: 14px; line-height: 2; margin: 0; }
.book-card a.more { display: inline-block; margin-top: 14px; font-family: var(--font-ui); font-size: 11px; letter-spacing: 0.24em; border-bottom: 1px solid var(--kin); padding-bottom: 3px; }

/* lineage */
.lineage { text-align: center; }
.lineage-list { display: flex; justify-content: center; gap: 56px; flex-wrap: wrap; margin: 0; padding: 0; list-style: none; }
.lineage-list li { font-family: var(--font-display); }
.lineage-name { font-size: 20px; letter-spacing: 0.24em; display: block; }
.lineage-role { font-family: var(--font-ui); font-size: 10px; letter-spacing: 0.28em; color: var(--usuzumi); }
.lineage-note { font-family: var(--font-ui); font-size: 12px; letter-spacing: 0.2em; color: var(--usuzumi); margin-top: 26px; }

/* posts / blog */
.post-list { display: grid; gap: 0; }
.post-item { border-top: 1px solid var(--gofun-deep); padding: 26px 0; display: grid; grid-template-columns: 130px 1fr; gap: 24px; align-items: baseline; }
.post-item:last-child { border-bottom: 1px solid var(--gofun-deep); }
.post-date { font-family: var(--font-ui); font-size: 12px; letter-spacing: 0.14em; color: var(--usuzumi); }
.post-title { font-family: var(--font-display); font-size: 18px; margin: 0; letter-spacing: 0.06em; }
.post-title a:hover { color: var(--gunjo); }

/* single / page */
.entry { max-width: 720px; margin: 0 auto; padding: 72px 24px 110px; }
.entry-title { font-family: var(--font-display); font-size: 32px; letter-spacing: 0.1em; line-height: 1.6; }
.entry-meta { font-family: var(--font-ui); font-size: 12px; color: var(--usuzumi); letter-spacing: 0.2em; margin-bottom: 42px; }
.entry-content p { margin: 0 0 1.8em; }
.entry-content h2 { font-family: var(--font-display); font-size: 24px; letter-spacing: 0.12em; margin: 2.2em 0 1em; border-left: 3px solid var(--gunjo); padding-left: 16px; }
.entry-content img { margin: 2em auto; }
.entry-content blockquote { border-left: 2px solid var(--kin); margin: 2em 0; padding: 0 0 0 20px; color: var(--usuzumi); }

/* contact */
.contact-block { text-align: center; }
.contact-mail { font-family: var(--font-ui); font-size: 18px; letter-spacing: 0.12em; border-bottom: 1px solid var(--sumi); padding-bottom: 4px; }
.contact-note { font-family: var(--font-ui); font-size: 12px; color: var(--usuzumi); letter-spacing: 0.2em; margin-top: 16px; }

/* footer */
.site-footer { background: var(--sumi); color: var(--gofun); padding: 54px 0 40px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-brand { font-family: var(--font-display); letter-spacing: 0.3em; }
.footer-brand .rakkan { width: 34px; height: 34px; font-size: 15px; margin: 0 12px 0 0; vertical-align: middle; }
.footer-copy { font-family: var(--font-ui); font-size: 11px; letter-spacing: 0.2em; color: rgba(242,239,230,0.6); }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .hero-split { grid-template-columns: 1fr; min-height: auto; }
  .hero-half { min-height: 78svh; padding: 100px 24px 60px; }
  .hero-half.artist { border-right: 0; border-bottom: 1px solid rgba(28,27,23,0.25); }
  .hero-name { height: auto; min-height: 7.5em; }
  .works-grid, .books-row { grid-template-columns: 1fr 1fr; }
  .site-nav { display: none; }
  .site-nav.open { display: block; position: absolute; top: 64px; right: 16px; background: var(--gofun); border: 1px solid var(--gofun-deep); padding: 18px 26px; }
  .site-nav.open ul { flex-direction: column; gap: 14px; }
  .nav-toggle { display: inline-block; background: none; border: 1px solid var(--sumi); font-family: var(--font-ui); font-size: 11px; letter-spacing: 0.2em; padding: 8px 14px; color: var(--sumi); }
}
@media (max-width: 560px) {
  .works-grid, .books-row { grid-template-columns: 1fr; }
  .post-item { grid-template-columns: 1fr; gap: 6px; }
  .section { padding: 64px 0; }
}

/* ---------- 画廊 (portfolio template) ---------- */
.gallery-page { padding: 72px 0 110px; }
.gallery-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 52px; }
.gallery-title { font-family: var(--font-display); font-size: clamp(34px, 4vw, 52px); letter-spacing: 0.3em; margin: 0; min-height: 4.5em; }
.gallery-sub { display: flex; flex-direction: column; align-items: flex-end; gap: 16px; padding-top: 6px; }

.gallery-masonry { columns: 3 300px; column-gap: 22px; }
.g-item { margin: 0 0 22px; break-inside: avoid; }
.g-open { display: block; width: 100%; padding: 0; border: 0; background: #fff; cursor: zoom-in; }
.g-open img { width: 100%; display: block; padding: 10px; background: #fff; box-shadow: 0 1px 3px rgba(28,27,23,0.12); transition: box-shadow .35s, transform .35s; }
.g-open:hover img { box-shadow: 0 6px 22px rgba(28,27,23,0.2); transform: translateY(-2px); }
.g-open:focus-visible { outline: 2px solid var(--gunjo); outline-offset: 3px; }

.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(20,19,16,0.96);
  display: grid; place-items: center;
}
.lightbox[hidden] { display: none !important; }
.lb-img { max-width: min(92vw, 1400px); max-height: 86vh; width: auto; height: auto; box-shadow: 0 10px 60px rgba(0,0,0,0.6); background: #fff; padding: 12px; }
.lightbox button {
  position: absolute; background: none; border: 0; color: var(--gofun);
  font-family: var(--font-display); cursor: pointer; padding: 14px; line-height: 1;
}
.lb-close { top: 18px; right: 22px; font-size: 34px; }
.lb-prev, .lb-next { top: 50%; transform: translateY(-50%); font-size: 52px; }
.lb-prev { left: 12px; } .lb-next { right: 12px; }
.lightbox button:hover { color: var(--kin); }
.lb-count { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); color: rgba(242,239,230,0.75); font-family: var(--font-ui); font-size: 12px; letter-spacing: 0.3em; }

@media (max-width: 560px) {
  .gallery-masonry { columns: 2 150px; column-gap: 12px; }
  .g-item { margin-bottom: 12px; }
  .g-open img { padding: 6px; }
  .gallery-title { min-height: auto; writing-mode: horizontal-tb; }
  .gallery-head { align-items: center; }
}

/* ---------- 連絡 (contact template) ---------- */
.contact-page { padding: 72px 0 110px; }
.contact-lead { text-align: center; margin: 0 0 56px; line-height: 2.2; }
.contact-doors { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; max-width: 860px; margin: 0 auto 64px; }
.contact-door {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  background: #fff; border: 1px solid var(--gofun-deep);
  padding: 44px 28px 36px; text-align: center;
  transition: box-shadow .35s, transform .35s, border-color .35s;
}
.contact-door:hover { box-shadow: 0 8px 30px rgba(28,27,23,0.12); transform: translateY(-3px); border-color: var(--kin); }
.door-kanji { font-family: var(--font-display); font-size: 56px; line-height: 1; }
.door-art .door-kanji { color: var(--gunjo); }
.door-writing .door-kanji { color: var(--sumi); }
.door-title { font-family: var(--font-display); font-size: 19px; letter-spacing: 0.18em; margin-top: 8px; }
.door-desc { font-family: var(--font-ui); font-size: 12px; letter-spacing: 0.12em; color: var(--usuzumi); }
.door-cta { font-family: var(--font-ui); font-size: 12px; letter-spacing: 0.22em; border-bottom: 1px solid var(--sumi); padding-bottom: 3px; margin-top: 14px; }
.contact-door:hover .door-cta { border-bottom-color: var(--kin); }
.contact-direct { text-align: center; }
@media (max-width: 640px) {
  .contact-doors { grid-template-columns: 1fr; gap: 16px; }
}