/* =========================================================
   my_portfolio — shared shell
   Design system, navigation, footer, animation utilities.
   Per-page worlds layer their own theme on top of this.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Bodoni+Moda:ital,opsz,wght@0,6..96,400;0,6..96,500;0,6..96,600;0,6..96,700;0,6..96,800;1,6..96,400&family=Zen+Old+Mincho:wght@400;500;600;700;900&family=Zen+Kaku+Gothic+New:wght@400;500;700;900&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  /* ink + paper base */
  --ink: #20201d;
  --ink: #20201d;
  --ink-soft: #54534d;
  --ink-faint: #97968f;
  --paper: #fbf7ec;
  --paper-2: #f3ecd9;
  --paper-warm: #efe6cf;
  --line: #20201d;

  /* accents */
  --accent: #20201d;
  --accent-2: #20201d;
  --highlight: #ddd9cf;
  --green: #4a7a3f;
  --blue: #3a5a8a;

  /* theme hooks — pages override these */
  --theme-bg: var(--paper);
  --theme-accent: var(--accent);
  --theme-head: "Zen Old Mincho", serif;

  --nav-h: 78px;
  --maxw: 1180px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--theme-bg);
  color: var(--ink);
  font-family: "Zen Kaku Gothic New", system-ui, sans-serif;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* paper grain overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background-image:
    radial-gradient(rgba(0,0,0,0.035) 1px, transparent 1px),
    radial-gradient(rgba(0,0,0,0.02) 1px, transparent 1px);
  background-size: 3px 3px, 7px 7px;
  background-position: 0 0, 2px 4px;
  mix-blend-mode: multiply;
  opacity: 0.8;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- typography helpers ---------- */
.serif { font-family: "Zen Old Mincho", serif; }
.hand  { font-family: "Bodoni Moda", "Zen Old Mincho", serif; }
.mono  { font-family: "JetBrains Mono", monospace; }

.eyebrow {
  display: inline-block;
  white-space: nowrap;
  border: 1.4px solid var(--ink);
  padding: 4px 14px;
  font-family: "Bodoni Moda", "Zen Old Mincho", serif;
  font-size: clamp(13px, 1.3vw, 15px);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: var(--paper);
}

.hl {
  background: linear-gradient(transparent 58%, var(--highlight) 58%);
  padding: 0 2px;
}

/* ---------- top navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  background: color-mix(in srgb, var(--theme-bg) 86%, transparent);
  backdrop-filter: blur(10px) saturate(1.1);
  -webkit-backdrop-filter: blur(10px) saturate(1.1);
  border-bottom: 2px solid var(--ink);
  transition: transform .4s var(--ease);
}
.nav.hide { transform: translateY(-100%); }

.nav-logo {
  font-family: "Bodoni Moda", "Zen Old Mincho", serif;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.02em;
  letter-spacing: 0.04em;
  line-height: 1;
  white-space: nowrap;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.nav-logo .mark {
  display: inline-flex;
  width: 30px; height: 30px;
  align-items: center; justify-content: center;
  border: 2px solid var(--ink);
  border-radius: 50%;
  font-family: "Zen Old Mincho", serif;
  font-weight: 800;
  font-size: 15px;
  background: var(--theme-accent);
  color: #fff;
  transform: rotate(-4deg);
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
  gap: 2px;
  margin-left: 32px;
}
.nav-links a {
  position: relative;
  font-size: 13.5px;
  font-weight: 500;
  padding: 9px 7px;
  color: var(--ink-soft);
  transition: color .2s;
  white-space: nowrap;
  text-align: center;
}
.nav-links a .en {
  display: block;
  font-family: "Bodoni Moda", "Zen Old Mincho", serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: lowercase;
  color: var(--ink-soft);
  line-height: 1.1;
  margin-top: 3px;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); font-weight: 600; }
.nav-links a.cta {
  margin-left: 0;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 20px;
  font-family: "Bodoni Moda", "Zen Old Mincho", serif;
  font-size: 14px;
  letter-spacing: 0.04em;
}
.nav-links a.cta:hover { background: var(--theme-accent); color:#fff; }
.nav-links a.cta::after { display: none; }

/* hamburger */
.nav-burger {
  display: none;
  margin-left: auto;
  width: 40px; height: 40px;
  border: 1.8px solid var(--ink);
  background: var(--paper);
  border-radius: 8px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
}
.nav-burger i { width: 18px; height: 2px; background: var(--ink); display:block; transition: .25s; }
.nav-burger.open i:nth-child(1){ transform: translateY(6px) rotate(45deg); }
.nav-burger.open i:nth-child(2){ opacity: 0; }
.nav-burger.open i:nth-child(3){ transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 820px) {
  .nav-links {
    justify-content: flex-start;
    flex: none;
    margin-left: 0;
    position: fixed;
    top: var(--nav-h); right: 0;
    width: min(78vw, 320px);
    height: calc(100vh - var(--nav-h));
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px;
    background: var(--paper);
    border-left: 2px solid var(--ink);
    transform: translateX(105%);
    transition: transform .35s var(--ease);
    overflow-y: auto;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { padding: 14px 12px; border-bottom: 1.4px dashed var(--ink-faint); font-size: 18px; }
  .nav-links a.cta { margin-top: 12px; border-radius: 10px; text-align: center; }
  .nav-burger { display: flex; }
}

/* ---------- page scaffold ---------- */
.page-wrap { padding-top: var(--nav-h); position: relative; z-index: 2; }
.section { padding: clamp(56px, 9vh, 110px) 24px; }
.container { max-width: var(--maxw); margin: 0 auto; }
.narrow { max-width: 820px; margin: 0 auto; }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.section-title {
  font-family: var(--theme-head);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.1;
  margin: 0;
  letter-spacing: 0.01em;
}
.section-sub { font-size: 14px; color: var(--ink); max-width: 420px; }

/* ---------- buttons / chips ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 11px 20px;
  border: 2px solid var(--ink);
  border-radius: 30px;
  background: var(--paper);
  cursor: pointer;
  transition: transform .2s var(--ease), background .2s, color .2s, box-shadow .2s;
  box-shadow: 3px 3px 0 var(--ink);
}
.btn:hover { transform: translate(-1px,-1px); box-shadow: 4px 4px 0 var(--ink); }
.btn:active { transform: translate(2px,2px); box-shadow: 1px 1px 0 var(--ink); }
.btn.solid { background: var(--ink); color: var(--paper); }
.btn.accent { background: var(--theme-accent); color: #fff; border-color: var(--ink); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  padding: 4px 12px;
  border: 1.6px solid var(--ink);
  border-radius: 16px;
  background: var(--paper);
  white-space: nowrap;
}
.chip.solid { background: var(--ink); color: var(--paper); }
.chip.accent { background: var(--theme-accent); color: #fff; border-color: var(--theme-accent); }

/* ---------- image slot styling ---------- */
image-slot {
  --is-bg: var(--paper-2);
  border: 2px solid var(--ink);
  background: var(--paper-2);
  display: block;
}
/* image-slot must stay clickable: never wrap it in an <a>. */
image-slot { overflow: hidden; }
/* tiny icon-sized slots: hide the built-in hint, show a compact "+" affordance */
.find-ic image-slot::part(empty), .logo-slot image-slot::part(empty), .art-thumb image-slot::part(empty), .tr-link-ic image-slot::part(empty) { opacity: 0; }
.find-ic, .footer .social.on-dark .logo-slot, .art-thumb, .tr-link-ic { position: relative; }
.find-ic::after, .footer .social.on-dark .logo-slot::after, .art-thumb::after, .tr-link-ic::after {
  content: "＋";
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  font-size: 15px;
  color: var(--ink-soft);
  pointer-events: none;
  z-index: 0;
}
.footer .social.on-dark .logo-slot::after {
  top: 15px;
  font-size: 13px;
  color: rgba(0,0,0,.35);
}
.find-ic:has(image-slot[data-filled])::after,
.art-thumb:has(image-slot[data-filled])::after,
.tr-link-ic:has(image-slot[data-filled])::after,
.logo-slot:has(image-slot[data-filled])::after { display: none; }
image-slot::part(placeholder) {
  font-family: "Bodoni Moda", "Zen Old Mincho", serif;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.3;
  padding: 2px;
}
.slot-frame {
  position: relative;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(0,0,0,0.12);
  background:
    repeating-linear-gradient(45deg, transparent 0 7px, rgba(0,0,0,0.05) 7px 8px),
    var(--paper-2);
  overflow: hidden;
}
.slot-frame image-slot { border: none; box-shadow: none; width: 100%; height: 100%; }

/* ---------- footer ---------- */
.footer {
  position: relative;
  z-index: 2;
  background: var(--ink);
  color: var(--paper);
  padding: 56px 24px 36px;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}
.footer h3 {
  font-family: "Zen Old Mincho", serif;
  font-weight: 800;
  font-size: 24px;
  margin: 0 0 10px;
}
.footer .tagline { font-size: 13px; color: #c9c6bd; max-width: 320px; }
.footer-col h4 {
  font-family: "Bodoni Moda", "Zen Old Mincho", serif;
  font-size: 17px;
  color: var(--highlight);
  margin: 0 0 12px;
  letter-spacing: 0.04em;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: #ddd9cf;
  padding: 5px 0;
  transition: color .2s, transform .2s;
}
.footer-col a:hover { color: #fff; transform: translateX(3px); }
.footer-contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-family: "Bodoni Moda", "Zen Old Mincho", serif;
  font-size: 19px;
  color: var(--highlight);
  border-bottom: 2px solid var(--highlight);
  padding-bottom: 2px;
}
.footer-bottom {
  max-width: var(--maxw);
  margin: 40px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.18);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: #aaa69c;
}
@media (max-width: 760px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ---------- social row ---------- */
.social {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  min-width: 38px;
  padding: 0 10px;
  border: 1.8px solid currentColor;
  border-radius: 9px;
  font-family: "Bodoni Moda", "Zen Old Mincho", serif;
  font-size: 15px;
  transition: transform .2s var(--ease), background .2s, color .2s;
}
.social a:hover { transform: translateY(-3px) rotate(-2deg); }
.social.on-dark a { color: var(--paper); }
.social.on-dark a:hover { background: var(--highlight); color: var(--ink); border-color: var(--highlight); }
.social a.wide { letter-spacing: 0.03em; }
.social a.logo-slot,
.social .logo-slot {
  min-width: 0;
  padding: 0;
  width: 34px;
  height: 34px;
  overflow: hidden;
  background: #fff;
  border-color: #fff;
}
.footer .social.on-dark { gap: 5px; flex-wrap: wrap; }
.footer .social.on-dark .logo-slot {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 34px;
  height: auto;
  min-width: 0;
  padding: 0;
  border: none;
  background: transparent;
  gap: 3px;
}
.footer .social.on-dark .logo-slot image-slot {
  width: 30px;
  height: 30px;
  border: 1.6px solid var(--paper);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}
.footer .social.on-dark .logo-link {
  border: none;
  height: auto;
  min-width: 0;
  padding: 0;
  border-radius: 0;
  background: transparent;
  font-family: "Bodoni Moda", "Zen Old Mincho", serif;
  font-size: 11px;
  letter-spacing: 0.05em;
  color: #c9c6bd;
  line-height: 1;
}
.footer .social.on-dark .logo-link:hover { color: var(--highlight); background: transparent; border: none; transform: none; }
.social a.logo-slot image-slot { width: 100%; height: 100%; border: none; }
.social.on-dark a.logo-slot:hover { background: #fff; border-color: var(--highlight); }

/* ---------- language switcher ---------- */
.lang-drop { position: relative; display: flex; align-items: center; margin-left: 0; }
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font: inherit;
  font-size: 13.5px;
  font-weight: 500;
  padding: 9px 3px;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  white-space: nowrap;
}
.lang-btn:hover { color: var(--ink); }
.lang-btn .caret { font-size: 9px; color: var(--ink-soft); }
.lang-menu {
  position: absolute;
  top: 100%;
  right: 0;
  transform: translateY(8px);
  width: 200px;
  max-height: 62vh;
  overflow-y: auto;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 5px 6px 0 rgba(0,0,0,.14);
  padding: 7px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s, transform .26s var(--ease), visibility .2s;
  z-index: 130;
}
.lang-drop:hover .lang-menu,
.lang-drop:focus-within .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.lang-menu a {
  display: block;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--ink-soft);
  border-radius: 4px;
}
.lang-menu a:hover { background: var(--paper-2); color: var(--ink); }
.lang-menu a.on { background: var(--ink); color: var(--paper); font-weight: 600; }

@media (max-width: 820px) {
  .lang-drop { margin: 14px 0 0; display: block; }
  .lang-btn { width: 100%; justify-content: center; padding: 12px 4px; }
  .lang-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    width: 100%;
    max-height: none;
    border: none;
    box-shadow: none;
    background: transparent;
    padding: 8px 0 0;
  }
  .lang-menu a { font-size: 16px; }
}

/* ---------- scroll-reveal animation ---------- */
/* Hidden state only applies once JS adds .reveal-ready to <html>, so
   content is never stuck invisible if scripts fail. */
@media (prefers-reduced-motion: no-preference) {
  .reveal-ready [data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .7s var(--ease), transform .7s var(--ease);
    transition-delay: var(--d, 0ms);
    will-change: opacity, transform;
  }
  .reveal-ready [data-reveal="left"]:not(.in)  { transform: translateX(-40px); }
  .reveal-ready [data-reveal="right"]:not(.in) { transform: translateX(40px); }
  .reveal-ready [data-reveal="scale"]:not(.in) { transform: scale(.92); }
  .reveal-ready [data-reveal="rotate"]:not(.in){ transform: rotate(-3deg) translateY(24px); }
  .reveal-ready [data-reveal].in { opacity: 1; transform: none; }
}

/* ---------- shelf (influences) shared ---------- */
.shelf {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  padding: 18px 14px 8px;
  border-bottom: 5px solid var(--ink);
  background: var(--paper);
  border-radius: 4px 4px 0 0;
  box-shadow: 0 10px 18px -12px rgba(0,0,0,0.4);
  overflow-x: auto;
}
.shelf-item {
  flex: 0 0 auto;
  border: 1.6px solid var(--ink);
  border-radius: 1px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: transform .22s var(--ease);
  box-shadow: 1px 1px 0 rgba(0,0,0,0.15);
}
.shelf-item:hover { transform: translateY(-7px) rotate(-1deg); z-index: 3; }
.shelf-book span {
  position: relative;
  z-index: 2;
  writing-mode: vertical-rl;
  font-family: "Zen Old Mincho", serif;
  font-size: 10px;
  letter-spacing: 0.08em;
  white-space: nowrap;
  padding: 6px 0;
}
.shelf-disc {
  width: 84px; height: 84px;
  overflow: hidden;
}
.shelf-disc span {
  position: relative;
  font-family: "Zen Old Mincho", serif;
  font-size: 11px;
  font-weight: 700;
  z-index: 2;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0,0,0,.6);
}
.shelf-disc::after {
  content: "";
  position: absolute;
  right: -30px; top: 50%;
  transform: translateY(-50%);
  width: 64px; height: 64px;
  border-radius: 50%;
  background:
    radial-gradient(circle, #fbf7ec 13%, transparent 14%),
    repeating-radial-gradient(circle, rgba(255,255,255,.18) 0 1px, transparent 1px 4px),
    #cfcabd;
  border: 1px solid rgba(0,0,0,.35);
}

/* sticky annotation (kept subtle for real site = none). */

/* ---------- utility ---------- */
.wash { background: var(--paper-2); }
.wash-warm { background: var(--paper-warm); }
.center { text-align: center; }
.mt-s { margin-top: 12px; } .mt-m { margin-top: 24px; } .mt-l { margin-top: 48px; }
.tilt-l { transform: rotate(-1.2deg); }
.tilt-r { transform: rotate(1.2deg); }