/* ============================================================
   yoko eats the world — shared base (mock 11 / 12 / 13 → site/)
   Tokens, header, language switch, mobile menu, category chips,
   article cards, buttons, footer, back-to-top, reduced motion.
   Page-specific pieces (hero, shop, about, article body) stay in
   each page.
   ============================================================ */
:root{
  /* navy / pink / white palette */
  --pink:#D98A9C; --pink-pale:#FBEDF0; --pink-light:#F6DCE2;
  --ink:#1D2A3A; --ink-soft:#4A5668; --white:#FFFFFF;
  /* M3 color roles, mapped onto the palette */
  --primary:#9A4F62;              /* text-safe pink: 5.7:1 on white, 5.0:1 on pink-pale */
  --on-primary:#FFFFFF;
  --primary-container:#F6DCE2;
  --on-primary-container:#1D2A3A;
  --surface:#FFFFFF;
  --surface-container-high:#F6DCE2;
  --on-surface:#1D2A3A;
  --on-surface-variant:#4A5668;
  --outline-variant:#E6CBD2;
  /* M3 shape scale */
  --shape-sm:8px; --shape-md:12px; --shape-lg:16px; --shape-xl:28px; --shape-full:9999px;
  /* M3 motion tokens */
  --ease-emphasized:cubic-bezier(.2,0,0,1);
  --ease-emphasized-decel:cubic-bezier(.05,.7,.1,1);
  --ease-standard:cubic-bezier(.2,0,0,1);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);
  --dur-short:200ms; --dur-medium:350ms; --dur-long:500ms;
  /* elevation */
  --shadow-pink:0 10px 24px -14px rgba(217,138,156,.55);
  --shadow-pink-lg:0 18px 34px -16px rgba(217,138,156,.7);
  --elev-1:0 1px 2px rgba(29,42,58,.14), 0 1px 3px 1px rgba(29,42,58,.08);
  --elev-3:0 4px 8px 3px rgba(29,42,58,.12), 0 1px 3px rgba(29,42,58,.22);
  --elev-4:0 6px 12px 4px rgba(29,42,58,.14), 0 2px 4px rgba(29,42,58,.22);
  --frame-radius:var(--shape-xl);
  /* type */
  --font-display:"Cormorant Garamond",serif;
  --font-serif:"Source Serif 4","Hiragino Mincho ProN",serif;
  --font-sans:"Zen Kaku Gothic New","Hiragino Kaku Gothic ProN","Hiragino Sans",sans-serif;
  --font-mono:"IBM Plex Mono","Zen Kaku Gothic New","Hiragino Kaku Gothic ProN",monospace;   /* Japanese glyphs fall back to the body font, not the system gothic */
  --header-h:64px;
  --page-max:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--white);
  color:var(--ink);
  font-family:var(--font-sans);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

.skip-link{
  position:absolute; left:16px; top:-100px; z-index:2000;
  padding:12px 16px; border-radius:var(--shape-sm);
  background:var(--ink); color:var(--white); text-decoration:none;
  font-family:var(--font-mono); font-size:12px;
}
.skip-link:focus{top:12px;}

/* M3 focus indicator */
a:focus-visible,button:focus-visible{outline:3px solid var(--primary); outline-offset:2px;}

/* ---------- Header: frosted pink glass ---------- */
header.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:12px 24px;
  background:rgba(251,237,240,.62);
  -webkit-backdrop-filter:blur(12px) saturate(1.2);
  backdrop-filter:blur(12px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.5);
  color:var(--ink);
}
/* pages without a full-bleed photo under the header: slightly more opaque */
header.site-header.is-solid{background:rgba(251,237,240,.88); border-bottom-color:var(--outline-variant);}
.site-name{
  text-decoration:none;
  font-family:var(--font-display);
  font-weight:700;
  font-size:21px;
  text-transform:lowercase;
  letter-spacing:.01em;
  white-space:nowrap;
}
nav.main-nav{
  display:flex;
  gap:16px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
}
nav.main-nav a{
  position:relative;
  isolation:isolate;
  display:inline-flex;
  align-items:center;
  min-height:48px;
  margin:-12px 0;
  padding:0 10px;
  border-radius:var(--shape-sm);
  text-decoration:none;
  color:var(--on-surface);
  opacity:.78;
  transition:opacity var(--dur-short) var(--ease-standard), color var(--dur-short) var(--ease-standard);
}
nav.main-nav a:hover{opacity:1; color:var(--primary);}
nav.main-nav a[aria-current="page"]{opacity:1; color:var(--primary);}
nav.main-nav a[aria-current="page"]::before{
  content:""; position:absolute; left:10px; right:10px; bottom:10px; height:2px;
  border-radius:2px; background:var(--pink);
}
nav.main-nav .nav-back{display:none;}

/* M3 state layers: hover 8% / focus 10% / pressed 10% */
nav.main-nav a::after,.back-link::after,.btn::after,.top-btn::after,.chip::after,.pager a::after{
  content:"";
  position:absolute; inset:0;
  border-radius:inherit;
  background:currentColor;
  opacity:0;
  pointer-events:none;
  transition:opacity var(--dur-short) var(--ease-standard);
}
nav.main-nav a:hover::after,.back-link:hover::after,.btn:hover::after,.top-btn:hover::after,.chip:hover::after,.pager a:hover::after{opacity:.08;}
nav.main-nav a:focus-visible::after,.back-link:focus-visible::after,.btn:focus-visible::after,.top-btn:focus-visible::after,.chip:focus-visible::after,.pager a:focus-visible::after{opacity:.10;}
nav.main-nav a:active::after,.back-link:active::after,.btn:active::after,.top-btn:active::after,.chip:active::after,.pager a:active::after{opacity:.10;}

.header-right{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:12px;
}
.mock-tag,.back-link{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  text-transform:uppercase;
  white-space:nowrap;
}
.mock-tag{opacity:.6;}
.back-link{
  position:relative;
  isolation:isolate;
  display:inline-flex;
  align-items:center;
  min-height:40px;
  margin:-8px -4px;
  padding:0 10px;
  border-radius:var(--shape-sm);
  color:var(--on-surface);
  text-decoration:none;
  opacity:.8;
}
.back-link:hover{opacity:1;}

/* ---------- Language switch (docs/03) ----------
   Two links to the same page in each language; the current one is
   marked aria-current and filled pink. Used on every page. */

/* ---------- Hamburger (mobile only) ---------- */
.menu-btn{
  display:none;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  width:48px;
  height:48px;
  margin:-8px -6px -8px 0;
  padding:0;
  border:0;
  border-radius:var(--shape-sm);
  background:transparent;
  color:var(--ink);
  cursor:pointer;
}
.menu-btn .bar{
  width:20px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform var(--dur-short) var(--ease-standard), opacity var(--dur-short) var(--ease-standard);
}
header.site-header.menu-open .menu-btn .bar:nth-child(1){transform:translateY(7px) rotate(45deg);}
header.site-header.menu-open .menu-btn .bar:nth-child(2){opacity:0;}
header.site-header.menu-open .menu-btn .bar:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* mock-only header items give way first, then the nav collapses below 1024px
   (name + 8 links + language switch need ~970px) */
@media (max-width:1279px){
  .mock-tag,.header-right .back-link{display:none;}
}
@media (max-width:1024px){
  header.site-header{padding:10px 14px;}
  .menu-btn{display:inline-flex;}
  nav.main-nav{
    display:none;
    position:absolute;
    top:100%; left:0; right:0;
    flex-direction:column;
    gap:0;
    padding:8px 10px 14px;
    background:#FBEDF0;   /* opaque: hero text must not show through the open menu */
    z-index:1;
    border-bottom:1px solid var(--outline-variant);
    box-shadow:var(--elev-3);
    max-height:calc(100vh - 60px);
    overflow-y:auto;
  }
  header.site-header.menu-open nav.main-nav{display:flex;}
  nav.main-nav a{
    min-height:52px;
    margin:0;
    padding:0 14px;
    font-size:13px;
    opacity:1;
    border-radius:var(--shape-md);
  }
  nav.main-nav a[aria-current="page"]::before{left:14px; right:auto; width:24px; bottom:12px;}
  nav.main-nav .nav-back{display:inline-flex; margin-top:6px; opacity:.7;}
}

/* ---------- Page container + section heads ---------- */
.page-wrap{max-width:var(--page-max); margin:0 auto; padding:0 20px;}
.section-head{
  max-width:var(--page-max);
  margin:0 auto 32px;
  text-align:center;
}
.section-head h2{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(28px,4vw,42px);
  margin:0 0 10px;
  color:var(--ink);
}
.section-head p{
  font-family:var(--font-serif);
  font-size:15px;
  color:var(--ink-soft);
  margin:0;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--ink-soft);
}
.breadcrumb ol{list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; align-items:center; gap:2px 0;}
.breadcrumb li{display:inline-flex; align-items:center; min-width:0; max-width:100%;}
.breadcrumb li+li::before{content:"/"; margin:0 8px; color:var(--outline-variant);}
.breadcrumb a{
  display:inline-flex; align-items:center; min-height:32px;
  color:var(--ink-soft); text-decoration:underline; text-decoration-color:var(--outline-variant); text-underline-offset:3px;
}
.breadcrumb a:hover{color:var(--primary); text-decoration-color:currentColor;}
.breadcrumb [aria-current="page"]{color:var(--ink); max-width:min(40ch, calc(100vw - 80px)); overflow:hidden; text-overflow:ellipsis; white-space:nowrap;}

/* ---------- Category chips (links to /<category>/, current = pink fill) ---------- */
.chip-row{
  max-width:var(--page-max);
  margin:0 auto;
  position:relative;
}
.chip-scroller{
  display:flex;
  gap:8px;
  margin:0;
  padding:6px 2px 10px;
  list-style:none;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  scrollbar-width:thin;
  scrollbar-color:var(--outline-variant) transparent;
  -webkit-overflow-scrolling:touch;
}
.chip-scroller li{flex:0 0 auto; scroll-snap-align:start;}
.chip{
  position:relative;
  isolation:isolate;
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:40px;
  padding:0 16px;
  border:1px solid var(--outline-variant);
  border-radius:var(--shape-full);
  background:var(--white);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.06em;
  text-transform:uppercase;
  text-decoration:none;
  white-space:nowrap;
  transition:background-color var(--dur-short) var(--ease-standard), border-color var(--dur-short) var(--ease-standard);
}
.chip::before{content:""; position:absolute; inset:-4px 0;}   /* 48px tall hit area */
.chip:hover{border-color:var(--pink);}
.chip[aria-current="page"]{background:var(--pink); border-color:var(--pink); color:var(--ink);}
.chip .count{font-weight:400; opacity:.7; letter-spacing:0;}
.chip[aria-current="page"] .count{opacity:1;}   /* 70% navy on pink would drop to ~3.3:1 */
/* edge fade hints that the row scrolls (narrow screens only) */
@media (max-width:900px){
  .chip-row::after{
    content:""; position:absolute; top:0; right:0; bottom:10px; width:36px; pointer-events:none;
    background:linear-gradient(90deg, rgba(255,255,255,0), var(--white));
  }
}

/* ---------- Article grid + cards ---------- */
.article-grid{
  max-width:var(--page-max);
  margin:0 auto;
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(min(100%, 260px), 1fr));
  gap:26px;
}
.article-grid.featured-grid{
  grid-template-columns:repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  margin-bottom:26px;
}
.featured-grid .card-thumb{aspect-ratio:3/2;}
.featured-grid .card-body{padding:18px 20px 24px;}
.featured-grid .card-title{font-size:19px; line-height:1.4;}
.article-card{
  position:relative;
  background:var(--white);
  border:1px solid var(--outline-variant);
  border-radius:var(--shape-lg);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  box-shadow:var(--shadow-pink);
  transition:box-shadow var(--dur-medium) var(--ease-standard);
}
/* reveal on scroll: site.js adds .js-reveal only after on-screen cards are marked visible
   (no-JS / JS error / reduced motion = cards always visible) */
.js-reveal .article-card.will-animate:not(.is-visible){opacity:0;}
.js-reveal .article-card.will-animate.is-visible{animation:cardin .7s var(--ease-emphasized-decel) both;}   /* fade-in only, no looping motion */
.article-card:hover{box-shadow:var(--shadow-pink-lg);}
@keyframes cardin{
  from{opacity:0; transform:translateY(18px);}
  to{opacity:1; transform:translateY(0);}
}
.card-thumb{
  aspect-ratio:4/3;
  overflow:hidden;
  margin:8px 8px 0;
  border-radius:var(--shape-md);
  background:var(--surface-container-high);
}
.card-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform var(--dur-long) var(--ease-emphasized);
}
.article-card:hover .card-thumb img{transform:scale(1.05);}
.card-body{
  padding:16px 18px 20px;
  display:flex;
  flex-direction:column;
  gap:8px;
  flex:1;
}
.card-meta{display:flex; flex-wrap:wrap; align-items:center; gap:6px;}
.card-cat{
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  border-radius:var(--shape-sm);
  background:var(--primary-container);
  color:var(--on-primary-container);
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:500;
  letter-spacing:.08em;
  text-transform:uppercase;
}
/* "this article is in Japanese" marker on the English side (docs/03) */
.card-lang{
  display:inline-flex; align-items:center; height:26px; padding:0 8px;
  border:1px solid var(--outline-variant); border-radius:var(--shape-sm);
  font-family:var(--font-mono); font-size:10px; letter-spacing:.06em; color:var(--ink-soft);
}
.card-title{
  font-family:var(--font-sans);
  font-weight:700;
  font-size:15px;
  line-height:1.45;
  color:var(--ink);
  margin:0;
  flex:1;
}
.card-title a{color:inherit; text-decoration:none;}
.card-title a::after{content:""; position:absolute; inset:0; border-radius:inherit;}   /* whole card clickable */
.card-title a:focus-visible{outline:none;}
.article-card:has(.card-title a:focus-visible){outline:3px solid var(--primary); outline-offset:2px;}
.card-date{
  display:block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--on-surface-variant);
}

/* ---------- Buttons ---------- */
.btn{
  position:relative;
  isolation:isolate;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 24px;
  border:0;
  border-radius:var(--shape-full);
  background:var(--pink);
  color:var(--ink);                /* navy on pink: 5.6:1 (white on pink fails AA) */
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.06em;
  text-decoration:none;
  box-shadow:var(--elev-1);
  cursor:pointer;
  transition:box-shadow var(--dur-medium) var(--ease-emphasized);
}
.btn:hover{box-shadow:var(--elev-3);}
.btn.btn-outline{background:transparent; box-shadow:none; border:1px solid var(--ink);}
.btn.btn-navy{background:var(--ink); color:var(--white);}

/* ---------- Pagination ---------- */
.pager{
  max-width:var(--page-max);
  margin:48px auto 0;
  display:flex;
  justify-content:center;
}
.pager ol{list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; justify-content:center; gap:6px;}
.pager a,.pager span{
  position:relative;
  isolation:isolate;
  display:inline-flex; align-items:center; justify-content:center;
  min-width:48px; min-height:48px; padding:0 14px;
  border-radius:var(--shape-full);
  font-family:var(--font-mono); font-size:13px; letter-spacing:.04em;
  text-decoration:none; color:var(--ink);
}
.pager a{border:1px solid var(--outline-variant); background:var(--white);}
.pager a:hover{border-color:var(--pink);}
.pager [aria-current="page"]{background:var(--ink); color:var(--white); border:1px solid var(--ink);}
.pager .gap{min-width:24px; padding:0; color:var(--ink-soft);}
.pager .pager-step{gap:6px;}

/* ---------- Footer ---------- */
footer.site-footer{
  background:transparent;
  color:var(--ink);
  text-align:center;
  padding:10px 20px 40px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  display:flex;
  flex-direction:column;
  gap:12px;
  align-items:center;
}
footer.site-footer nav ul{list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; justify-content:center; gap:4px 18px;}
footer.site-footer a{
  display:inline-flex; align-items:center; min-height:32px;
  text-decoration:none; color:var(--ink-soft);
}
footer.site-footer a:hover{text-decoration:underline; color:var(--ink);}
footer.site-footer .copyright{color:var(--ink-soft);}

/* ---------- Back to top (M3 FAB) ---------- */
.top-btn{
  position:fixed;
  right:20px;
  bottom:20px;
  width:56px;
  height:56px;
  padding:0;
  border:0;
  border-radius:var(--shape-lg);
  background:var(--ink);
  color:var(--white);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.08em;
  text-transform:uppercase;
  cursor:pointer;
  z-index:999;
  isolation:isolate;
  box-shadow:var(--elev-3);
  opacity:0;
  transform:translateY(8px) scale(.9);
  pointer-events:none;
  transition:
    opacity var(--dur-medium) var(--ease-emphasized),
    transform var(--dur-medium) var(--ease-emphasized),
    box-shadow var(--dur-medium) var(--ease-emphasized);
}
.top-btn.is-visible{opacity:1; transform:none; pointer-events:auto;}
.top-btn:hover{box-shadow:var(--elev-4);}

/* ---------- Reduced motion: everything still ---------- */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation:none !important;
    transition:none !important;
    scroll-behavior:auto !important;
  }
  .js .article-card{opacity:1 !important; transform:none !important;}
}