/* =========================================================
   YAKUMO JAPAN 八雲 — Shared design layer
   Refined, minimal Japanese craft aesthetic · light + dark
   ========================================================= */

:root {
  /* Hex tokens — used by hand-written CSS (buttons, hairlines, gradients) */
  --washi:       #F4F1EA;
  --washi-deep:  #EAE5DA;
  --washi-card:  #FBF9F4;
  --sumi:        #1A1714;
  --sumi-soft:   #2C2722;
  --stone:       #6B6259;
  --stone-light: #8A8076;
  --kin:         #A9854A;  /* brass / antique gold accent */
  --kin-soft:    #C2A878;
  --kin-link:    #836430;  /* inline body links — darkened brass, 4.86:1 on washi (kin itself is 3.03:1, fails AA) */
  --celadon:     #7F8E7C;  /* muted seiji green */
  --line:        rgba(26, 23, 20, 0.12);
  --line-soft:   rgba(26, 23, 20, 0.07);

  /* RGB triplets — consumed by the Tailwind color tokens so a single
     swap below repaints every utility class site-wide. */
  --c-washi:       244 241 234;
  --c-washi-deep:  234 229 218;
  --c-washi-card:  251 249 244;
  --c-sumi:        26 23 20;
  --c-sumi-soft:   44 39 34;
  --c-stone:       107 98 89;
  --c-stone-light: 138 128 118;
  --c-kin:         169 133 74;
  --c-kin-soft:    194 168 120;
  --c-celadon:     127 142 124;
}

/* =========================================================
   Dark theme — warm sumi base; the light tones become the accent bands
   ========================================================= */
html.dark {
  --washi:       #15120F;
  --washi-deep:  #1E1A16;
  --washi-card:  #221E19;
  --sumi:        #F1EDE6;
  --sumi-soft:   #D8D2C7;
  --stone:       #ABA396;
  --stone-light: #8A8276;
  --kin:         #C8A56C;
  --kin-soft:    #D8BD92;
  --kin-link:    #C8A56C;  /* on dark the brand gold already clears AA (8.05:1) */
  --celadon:     #94A48E;
  --line:        rgba(241, 237, 230, 0.14);
  --line-soft:   rgba(241, 237, 230, 0.07);

  --c-washi:       21 18 15;
  --c-washi-deep:  30 26 22;
  --c-washi-card:  34 30 25;
  --c-sumi:        241 237 230;
  --c-sumi-soft:   216 210 199;
  --c-stone:       171 163 150;
  --c-stone-light: 138 130 118;
  --c-kin:         200 165 108;
  --c-kin-soft:    216 189 146;
  --c-celadon:     148 164 142;
}

html { color-scheme: light; }
html.dark { color-scheme: dark; }
body { transition: background-color 0.6s ease, color 0.6s ease; }

/* Dark overrides for hand-tuned surfaces */
.dark .nav-shell.is-stuck {
  background-color: rgba(21, 18, 15, 0.82);
  border-bottom-color: var(--line);
}
.dark body::before { mix-blend-mode: overlay; opacity: 0.5; }
.dark .vessel-figure {
  background:
    radial-gradient(120% 90% at 50% 18%, #2a251f 0%, var(--washi-card) 55%, #14110d 100%);
}
.dark .vessel-card:hover .vessel-figure {
  background:
    radial-gradient(120% 90% at 50% 18%, #322c24 0%, #262119 60%, #100d0a 100%);
}

/* Recolour the ink-dark vessel silhouettes so they read on a dark card,
   while leaving the gold and celadon accents untouched. */
.dark [fill="#1A1714"],
.dark [fill="#2C2722"],
.dark [fill="#3a322b"] { fill: #D8D0BF; }
.dark [fill="#4a5247"],
.dark [fill="#5c6557"] { fill: #9FB29A; }
.dark [stroke="#1A1714"],
.dark [stroke="#2C2722"] { stroke: #D8D0BF; }
.dark [stroke="#4a5247"] { stroke: #9FB29A; }

/* Theme-toggle icon visibility */
.icon-sun { display: none; }
.dark .icon-sun { display: block; }
.dark .icon-moon { display: none; }

/* =========================================================
   PREMIUM LAYER — editorial type, photographic plates,
   specimen spec-plates, seals, refined micro-motion
   ========================================================= */

:root     { --shu: #A2492F; --c-shu: 162 73 47; }   /* 朱 — vermilion, reserved for seals / chops */
html.dark { --shu: #C8624A; --c-shu: 200 98 74; }

/* ---------- Typography hierarchy ---------- */
.font-display { font-feature-settings: "liga" 1, "dlig" 1; }
.display-xl {
  font-size: clamp(3rem, 8.2vw, 8rem);
  line-height: 0.9;
  letter-spacing: -0.012em;
}
.measure    { max-width: 60ch; }
.measure-sm { max-width: 46ch; }
.dropcap::first-letter {
  float: left;
  font-family: 'Cormorant Garamond', serif;
  font-weight: 500;
  font-size: 4.2em;
  line-height: 0.66;
  margin: 0.07em 0.12em 0 0;
  color: var(--kin);
}
.index-kanji { font-family: 'Noto Serif JP', serif; }

/* ---------- Rise / mask reveal ---------- */
.rise { display: block; overflow: hidden; padding-bottom: 0.04em; }
.rise > * {
  display: block;
  transform: translateY(118%);
  transition: transform 1.05s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}
.rise.is-visible > * { transform: none; }
.rise.d1 > * { transition-delay: 0.07s; }
.rise.d2 > * { transition-delay: 0.14s; }
.rise.d3 > * { transition-delay: 0.21s; }
.rise.d4 > * { transition-delay: 0.28s; }
@media (prefers-reduced-motion: reduce) {
  .rise > * { transform: none !important; transition: none !important; }
}

/* ---------- Hairline that draws itself in ---------- */
.rule-grow { transform: scaleX(0); transform-origin: left; transition: transform 1.3s cubic-bezier(0.16, 1, 0.3, 1); }
.rule-grow.is-visible { transform: scaleX(1); }
@media (prefers-reduced-motion: reduce) { .rule-grow { transform: none; } }

/* ---------- Photographic plate (real photo or still-life) ---------- */
.plate {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: radial-gradient(135% 105% at 50% 4%, #ffffff 0%, var(--washi-card) 44%, var(--washi-deep) 100%);
}
.plate > * { position: relative; z-index: 1; }
.plate::before {                 /* fine film grain */
  content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  opacity: 0.5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}
.plate::after {                  /* vignette */
  content: ""; position: absolute; inset: 0; z-index: 3; pointer-events: none;
  background: radial-gradient(120% 95% at 50% 30%, transparent 50%, rgba(26, 23, 20, 0.17) 100%);
  mix-blend-mode: multiply;
}
.dark .plate         { background: radial-gradient(135% 105% at 50% 4%, #2c271f 0%, var(--washi-card) 46%, #100d0a 100%); }
.dark .plate::before { mix-blend-mode: overlay; opacity: 0.42; }
.dark .plate::after  { background: radial-gradient(120% 95% at 50% 30%, transparent 44%, rgba(0, 0, 0, 0.5) 100%); }

/* ---------- Specimen card ---------- */
.specimen { transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1); }
.specimen:hover { transform: translateY(-7px); }
.specimen .plate { transition: box-shadow 0.6s ease; }
.specimen:hover .plate { box-shadow: 0 36px 70px -38px rgba(26, 23, 20, 0.5); }
.dark .specimen:hover .plate { box-shadow: 0 36px 70px -32px rgba(0, 0, 0, 0.8); }
.specimen-img { transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1); transform-origin: center 66%; }
.specimen:hover .specimen-img { transform: scale(1.045); }
@media (prefers-reduced-motion: reduce) {
  .specimen:hover { transform: none; }
  .specimen:hover .specimen-img { transform: none; }
}

/* ---------- Specimen spec-plate (auction / museum label) ---------- */
.spec-row { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding: 0.55rem 0; border-top: 1px solid var(--line); }
.spec-row dt { font-size: 0.6rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--stone-light); white-space: nowrap; }
.spec-row dd { font-size: 0.8rem; color: var(--sumi); font-variant-numeric: tabular-nums; text-align: right; }

/* ---------- Seal / chop (落款) ---------- */
.seal {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.5rem; height: 2.5rem; border: 1.5px solid var(--shu); border-radius: 4px;
  color: var(--shu); box-shadow: inset 0 0 0 2px rgba(162, 73, 47, 0.07);
}
.seal span { writing-mode: vertical-rl; font-family: 'Noto Serif JP', serif; font-size: 0.7rem; line-height: 1.05; }

/* ---------- Still-life illustration theming (class-driven, theme-aware) ---------- */
.still-moon    { fill: var(--kin); opacity: 0.10; }
.dark .still-moon { opacity: 0.16; }
.still-shadow  { fill: #1A1714; opacity: 0.12; }
.dark .still-shadow { fill: #000000; opacity: 0.55; }
.still-pot, .still-trunk, .still-foliage { fill: var(--sumi-soft); }
.still-rim     { fill: var(--sumi); }
.still-celadon { fill: var(--celadon); }
.still-branch  { stroke: var(--sumi-soft); fill: none; stroke-linecap: round; }
.still-soil    { fill: var(--sumi); opacity: 0.8; }

/* ---------- Scroll parallax ---------- */
[data-parallax] { will-change: transform; }
@media (prefers-reduced-motion: reduce) { [data-parallax] { transform: none !important; } }

.stat-num { font-variant-numeric: tabular-nums; }

/* ---------- Base ---------- */
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  background-color: var(--washi);
  color: var(--sumi);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Subtle washi paper grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.55;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

::selection { background: var(--kin); color: #fff; }

/* ---------- Typography helpers ---------- */
.font-display { font-family: 'Cormorant Garamond', Georgia, serif; }
.font-body    { font-family: 'Inter', system-ui, sans-serif; }
.font-jp      { font-family: 'Noto Serif JP', 'Cormorant Garamond', serif; }

.tracking-mega { letter-spacing: 0.42em; }
.tracking-wide-2 { letter-spacing: 0.22em; }

.text-balance { text-wrap: balance; }

/* Vertical Japanese accent text */
.vertical-jp {
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: 0.28em;
}

/* Eyebrow / kicker label */
.kicker {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--kin);
  font-weight: 500;
}

/* Hairline divider */
.hairline { height: 1px; background: var(--line); }

/* ---------- Links & buttons ---------- */
.link-underline {
  position: relative;
  display: inline-block;
}
.link-underline::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.link-underline:hover::after { transform: scaleX(1); transform-origin: left; }

/* Inline links inside body copy. The hover-only underline above is invisible at rest,
   which hides the cross-references between maker pages — the whole point of linking them.
   Gold marks them as links without shouting. Nav/footer/breadcrumb links keep the ink colour. */
.link-inline { color: var(--kin-link); }

.btn-ink {
  position: relative;
  overflow: hidden;
  transition: color 0.45s ease;
  isolation: isolate;
}
.btn-ink::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--sumi);
  transform: translateY(101%);
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: -1;
}
.btn-ink:hover::before { transform: translateY(0); }
.btn-ink:hover { color: var(--washi); }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 1s cubic-bezier(0.22, 1, 0.36, 1),
              transform 1.1s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }
.reveal-delay-4 { transition-delay: 0.48s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* ---------- Enso (brush circle) draw ---------- */
.enso-path {
  stroke-dasharray: 760;
  stroke-dashoffset: 760;
  transition: stroke-dashoffset 2.4s cubic-bezier(0.45, 0, 0.1, 1);
}
.is-visible .enso-path { stroke-dashoffset: 0; }
@media (prefers-reduced-motion: reduce) {
  .enso-path { stroke-dashoffset: 0; transition: none; }
}

/* ---------- Vessel card ---------- */
.vessel-card { transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1); }
.vessel-figure {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(125% 100% at 50% 8%, #ffffff 0%, var(--washi-card) 48%, var(--washi-deep) 100%);
  transition: background 0.7s ease, box-shadow 0.6s ease;
}
.vessel-figure > * { position: relative; z-index: 1; }
.vessel-figure::before {            /* film grain */
  content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  opacity: 0.45; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}
.vessel-figure::after {             /* vignette */
  content: ""; position: absolute; inset: 0; z-index: 3; pointer-events: none;
  background: radial-gradient(120% 95% at 50% 32%, transparent 54%, rgba(26, 23, 20, 0.15) 100%);
  mix-blend-mode: multiply;
}
.dark .vessel-figure::before { mix-blend-mode: overlay; opacity: 0.4; }
.dark .vessel-figure::after  { background: radial-gradient(120% 95% at 50% 32%, transparent 46%, rgba(0, 0, 0, 0.5) 100%); }
.vessel-card:hover .vessel-figure {
  background:
    radial-gradient(125% 100% at 50% 8%, #ffffff 0%, #f4efe6 60%, #e3dccd 100%);
  box-shadow: 0 30px 60px -36px rgba(26, 23, 20, 0.45);
}
.dark .vessel-card:hover .vessel-figure { box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.72); }
.vessel-svg { transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1); }
.vessel-card:hover .vessel-svg { transform: translateY(-6px) scale(1.03); }
@media (prefers-reduced-motion: reduce) {
  .vessel-card:hover .vessel-svg { transform: none; }
}

/* ---------- Nav ---------- */
.nav-shell {
  transition: background-color 0.5s ease, backdrop-filter 0.5s ease, border-color 0.5s ease;
  border-bottom: 1px solid transparent;
}
.nav-shell.is-stuck {
  background-color: rgba(244, 241, 234, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.nav-link { position: relative; }
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 100%; height: 1px;
  background: var(--sumi);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
.nav-link:hover::after,
.nav-link[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }

/* Mobile menu */
.mobile-menu {
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
.mobile-menu[data-open="false"] { opacity: 0; visibility: hidden; pointer-events: none; }
.mobile-menu[data-open="true"]  { opacity: 1; visibility: visible; }

/* ---------- Marquee ---------- */
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 38s linear infinite;
}
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
}

/* ---------- Slow float (hero accent) ---------- */
@keyframes drift {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}
.drift { animation: drift 9s ease-in-out infinite; }
@media (prefers-reduced-motion: reduce) {
  .drift { animation: none; }
}

/* Focus visibility */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--kin);
  outline-offset: 3px;
  border-radius: 1px;
}

/* =========================================================
   PRINT / PDF — screen rendering is unaffected (print only)
   ========================================================= */
@media print {
  * { -webkit-print-color-adjust: exact !important; print-color-adjust: exact !important; }

  /* Reveal everything that is normally animated in on scroll */
  .reveal, .rise, .rule-grow { opacity: 1 !important; transform: none !important; }
  .rise > * { transform: none !important; }
  .enso-path { stroke-dashoffset: 0 !important; }
  [data-parallax] { transform: none !important; }

  /* Static page flow — no fixed nav, no overlays/controls */
  body::before { display: none !important; }
  .nav-shell { position: static !important; backdrop-filter: none !important; }
  main { padding-top: 0 !important; }
  [data-theme-toggle], [data-menu-open], .mobile-menu { display: none !important; }

  /* Keep atomic blocks from splitting across pages */
  .specimen, figure, blockquote, .seal, dl, .plate, article { break-inside: avoid; }
  section { break-inside: auto; }
}
@page { margin: 12mm; }

/* =========================================================
   Real photo inside a plate (swaps in for the SVG placeholder)
   ========================================================= */
.plate-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  z-index: 1;
}
/* soften the studio grain + vignette so a real photo reads cleanly */
.plate.has-photo::before { opacity: 0.16; }
.plate.has-photo::after {
  background: radial-gradient(120% 95% at 50% 32%, transparent 62%, rgba(26, 23, 20, 0.12) 100%);
}
.dark .plate.has-photo::after {
  background: radial-gradient(120% 95% at 50% 32%, transparent 55%, rgba(0, 0, 0, 0.30) 100%);
}

/* Collection card (vessel-figure) holding a real photo / category image */
.vessel-figure.has-photo::before { opacity: 0.16; }
.vessel-figure.has-photo::after {
  background: radial-gradient(120% 95% at 50% 32%, transparent 62%, rgba(26, 23, 20, 0.12) 100%);
}
.dark .vessel-figure.has-photo::after {
  background: radial-gradient(120% 95% at 50% 32%, transparent 55%, rgba(0, 0, 0, 0.30) 100%);
}
.vessel-figure.has-photo .plate-img { transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1); }
.vessel-card:hover .vessel-figure.has-photo .plate-img { transform: scale(1.03); }
@media (prefers-reduced-motion: reduce) { .vessel-card:hover .vessel-figure.has-photo .plate-img { transform: none; } }