/* =========================================================
   Takamatsu Yuta — Portfolio
   White-based, orange accent, refined / minimal
   ========================================================= */

:root {
  /* palette — warm whites & inks, set/overridden by Tweaks */
  --bg:        #FCFAF7;
  --bg-soft:   #F6F2EC;
  --ink:       #211D18;
  --ink-soft:  #6B6259;
  --ink-faint: #A89E92;
  --line:      #E8E1D6;
  --line-soft: #F0EBE3;
  --accent:    #E8590C;
  --accent-ink:#B5440A;

  /* contact palette — overridden by Tweaks (default: 統一 = warm soft) */
  --contact-bg:  #F6F2EC;
  --contact-ink: #211D18;

  /* type families — unified to Klee One */
  --font-display-en: "Klee One", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-display-jp: "Klee One", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body: "Klee One", "Hiragino Mincho ProN", "Yu Mincho", serif;

  --maxw: 1180px;
  --gutter: clamp(24px, 6vw, 96px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.8;
  font-feature-settings: "palt" 1;
  letter-spacing: 0.02em;
  line-break: strict;
}

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

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

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

/* ---- shared layout helpers ---- */
.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent-ink);
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

.section-label {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.section-label .num {
  font-family: var(--font-display-en);
  font-size: 1.05rem;
  letter-spacing: 0;
  color: var(--accent);
  font-style: italic;
}

/* ---- placeholder image ---- */
.ph {
  position: relative;
  background-color: var(--bg-soft);
  background-image: repeating-linear-gradient(
    -45deg,
    var(--line-soft) 0 10px,
    transparent 10px 20px
  );
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.ph span {
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  background: var(--bg);
  padding: 0.35em 0.8em;
  border: 1px solid var(--line);
  border-radius: 999px;
}

/* =========================================================
   Header / nav
   ========================================================= */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: clamp(18px, 2.4vw, 30px) var(--gutter);
  mix-blend-mode: normal;
  transition: background .4s var(--ease), border-color .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand {
  font-family: var(--font-display-en);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.brand .dot { color: var(--accent); }
.nav { display: flex; align-items: center; gap: clamp(18px, 2.6vw, 40px); }
.nav a {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  position: relative;
  transition: color .25s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -5px;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); }
.nav .contact-link {
  color: var(--ink);
  font-weight: 500;
}
@media (max-width: 720px) {
  .nav .nav-page { display: none; }
}

/* =========================================================
   HERO — shared
   ========================================================= */
.heroes { position: relative; }
.hero { display: none; }
.heroes[data-hero="A"] .hero-A,
.heroes[data-hero="B"] .hero-B,
.heroes[data-hero="C"] .hero-C { display: block; }

.hero {
  min-height: 100svh;
  padding-top: clamp(120px, 16vh, 200px);
  padding-bottom: clamp(60px, 9vh, 120px);
}

/* reveal animation */
.reveal { opacity: 0; transform: translateY(22px); }
.in-view .reveal,
.reveal.in-view {
  opacity: 1; transform: none;
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
/* failsafe: if the transition is throttled (background iframe), force the
   end-state so content is never stuck hidden */
.reveal.is-shown {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* ---------- HERO A : centered editorial ---------- */
.hero-A .wrap {
  min-height: calc(100svh - 200px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.hero-A .kicker { margin-bottom: clamp(28px, 5vh, 52px); }
.hero-A h1 {
  margin: 0;
  font-family: var(--font-display-en);
  font-weight: 500;
  font-size: clamp(3.4rem, 11vw, 9.5rem);
  line-height: 0.94;
  letter-spacing: -0.01em;
}
.hero-A h1 em {
  font-style: italic;
  color: var(--accent);
}
.hero-A .jp-sub {
  font-family: var(--font-display-jp);
  font-size: clamp(1rem, 2.4vw, 1.6rem);
  letter-spacing: 0.18em;
  color: var(--ink);
  margin-top: clamp(24px, 4vh, 40px);
}
.hero-A .lead {
  max-width: 40ch;
  margin: clamp(20px, 3vh, 30px) auto 0;
  color: var(--ink-soft);
  font-size: 1.02rem;
}
.hero-A .scroll-cue {
  margin-top: clamp(40px, 7vh, 72px);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.hero-A .scroll-cue .bar {
  width: 1px; height: 46px;
  background: linear-gradient(var(--accent), transparent);
  animation: drop 2.2s var(--ease) infinite;
}
@keyframes drop {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- HERO B : split / portrait ---------- */
.hero-B .wrap {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
  min-height: calc(100svh - 220px);
}
.hero-B h1 {
  margin: 1.4rem 0 0;
  font-family: var(--font-display-en);
  font-weight: 500;
  font-size: clamp(2.8rem, 6.6vw, 6rem);
  line-height: 0.98;
  letter-spacing: -0.01em;
}
.hero-B h1 .jp {
  display: block;
  font-family: var(--font-display-jp);
  font-size: clamp(1.2rem, 2.4vw, 1.9rem);
  letter-spacing: 0.16em;
  margin-top: 0.7em;
  color: var(--ink);
}
.hero-B .lead {
  margin-top: clamp(22px, 3.4vh, 34px);
  max-width: 38ch;
  color: var(--ink-soft);
}
.hero-B .actions {
  margin-top: clamp(28px, 4vh, 44px);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-B .portrait {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  border-radius: 2px;
}
.hero-B .portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 18%;
  display: block;
}
.hero-B .portrait::after {
  content: "";
  position: absolute;
  left: -14px; bottom: -14px;
  width: 64%; height: 42%;
  border-left: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  pointer-events: none;
}
@media (max-width: 820px) {
  .hero-B .wrap { grid-template-columns: 1fr; }
  .hero-B .portrait { order: -1; max-width: 360px; }
}

/* ---------- HERO C : index / grid ---------- */
.hero-C .wrap {
  min-height: calc(100svh - 220px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: clamp(40px, 8vh, 90px);
}
.hero-C .top { display: flex; justify-content: space-between; align-items: flex-start; gap: 2rem; flex-wrap: wrap; }
.hero-C .top .meta {
  text-align: right;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  line-height: 2;
}
.hero-C h1 {
  margin: 0;
  font-family: var(--font-display-en);
  font-weight: 500;
  font-size: clamp(3rem, 12.5vw, 12rem);
  line-height: 0.9;
  letter-spacing: -0.015em;
}
.hero-C h1 .line2 { color: var(--accent); font-style: italic; display: block; }
.hero-C .index-row {
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 48px);
  padding-top: clamp(24px, 3vh, 36px);
}
.hero-C .index-item .n {
  font-family: var(--font-display-en);
  font-style: italic;
  color: var(--accent);
  font-size: 1rem;
}
.hero-C .index-item h3 {
  margin: 0.4em 0 0.3em;
  font-family: var(--font-display-jp);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.hero-C .index-item p { margin: 0; font-size: 0.86rem; color: var(--ink-soft); line-height: 1.7; }
@media (max-width: 720px) {
  .hero-C .index-row { grid-template-columns: 1fr; gap: 18px; }
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  padding: 0.95em 1.7em;
  border-radius: 999px;
  border: 1px solid var(--ink);
  transition: all .3s var(--ease);
  cursor: pointer;
  background: none;
  color: var(--ink);
}
.btn .arrow { transition: transform .3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); }
.btn-ghost:hover { background: var(--ink); color: var(--bg); }

/* =========================================================
   ABOUT
   ========================================================= */
.about { padding-block: clamp(90px, 14vh, 180px); }
.about .grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(36px, 6vw, 84px);
  align-items: center;
  margin-top: clamp(40px, 6vh, 72px);
}
.about .lead-statement {
  font-family: var(--font-display-jp);
  font-weight: 500;
  font-size: clamp(1.5rem, 3.1vw, 2.5rem);
  line-height: 1.6;
  letter-spacing: 0.02em;
  margin: 0;
}
.about .lead-statement em {
  font-family: var(--font-display-en);
  font-style: italic;
  color: var(--accent);
  letter-spacing: 0;
}
.about .body p { color: var(--ink-soft); margin: 0 0 1.4em; max-width: 46ch; }
.about .body p:last-child { margin-bottom: 0; }
.about .signature {
  font-family: var(--font-display-en);
  font-style: italic;
  font-size: 1.6rem;
  margin-top: 1.6rem;
  color: var(--ink);
}
.about-portrait {
  position: relative;
  margin: 0;
  width: min(100%, 300px);
  aspect-ratio: 2 / 3;
  border-radius: 2px;
  overflow: hidden;
}
.about-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.about-portrait::after {
  content: "";
  position: absolute;
  right: -12px; bottom: -12px;
  width: 54%; height: 38%;
  border-right: 1px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  pointer-events: none;
}
@media (max-width: 820px) {
  .about .grid { grid-template-columns: 1fr; gap: 36px; }
}

/* capability list */
.capabilities {
  margin-top: clamp(60px, 10vh, 120px);
  border-top: 1px solid var(--line);
}
.cap-row {
  display: grid;
  grid-template-columns: 0.5fr 1.2fr 1.3fr;
  gap: clamp(16px, 3vw, 48px);
  padding: clamp(26px, 3.4vh, 40px) 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
  transition: background .3s var(--ease), padding-inline .3s var(--ease);
}
.cap-row:hover { background: var(--bg-soft); padding-inline: 18px; }
.cap-row .idx { font-family: var(--font-display-en); font-style: italic; color: var(--accent); font-size: 1.1rem; }
.cap-row h3 {
  margin: 0;
  font-family: var(--font-display-jp);
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  font-weight: 600;
  letter-spacing: 0.03em;
}
.cap-row h3 small { display:block; font-family: var(--font-display-en); font-style: italic; font-weight: 500; color: var(--ink-faint); font-size: 0.78rem; letter-spacing: 0.06em; margin-top: 0.3em; }
.cap-row p { margin: 0; color: var(--ink-soft); font-size: 0.92rem; }
@media (max-width: 720px) {
  .cap-row { grid-template-columns: auto 1fr; }
  .cap-row p { grid-column: 1 / -1; }
}

/* =========================================================
   CONTACT
   ========================================================= */
.contact {
  padding-block: clamp(90px, 15vh, 190px);
  background: var(--contact-bg);
  color: var(--contact-ink);
  position: relative;
  overflow: hidden;
  border-top: 1px solid color-mix(in srgb, var(--contact-ink) 8%, transparent);
  transition: background .5s var(--ease), color .5s var(--ease);
}
.contact .glow {
  position: absolute;
  width: 58vw; height: 58vw;
  max-width: 720px; max-height: 720px;
  right: -10vw; top: -14vw;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 18%, transparent), transparent 64%);
  pointer-events: none;
}
.contact .eyebrow { color: var(--accent-ink); }
.contact .eyebrow::before { background: var(--accent); }
.contact h2 {
  margin: clamp(24px, 4vh, 40px) 0 0;
  font-family: var(--font-display-en);
  font-weight: 500;
  font-size: clamp(2.6rem, 8vw, 6.5rem);
  line-height: 1.0;
  letter-spacing: -0.01em;
}
.contact h2 .jp {
  display:block;
  font-family: var(--font-display-jp);
  font-size: clamp(1.1rem, 2.2vw, 1.7rem);
  letter-spacing: 0.14em;
  margin-top: 0.7em;
  color: color-mix(in srgb, var(--contact-ink) 62%, transparent);
}
.contact h2.contact-jp-head {
  font-family: var(--font-display-jp);
  font-size: clamp(1.9rem, 5vw, 3.6rem);
  line-height: 1.45;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.contact .mail {
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
  margin-top: clamp(30px, 5vh, 52px);
  font-family: var(--font-display-en);
  font-size: clamp(1.3rem, 3.4vw, 2.4rem);
  border-bottom: 1px solid color-mix(in srgb, var(--contact-ink) 28%, transparent);
  padding-bottom: 0.15em;
  transition: border-color .3s var(--ease), color .3s var(--ease);
}
.contact .mail:hover { color: var(--accent-ink); border-color: var(--accent); }
.contact .channels {
  margin-top: clamp(46px, 7vh, 80px);
  display: flex;
  gap: clamp(28px, 5vw, 64px);
  flex-wrap: wrap;
  border-top: 1px solid color-mix(in srgb, var(--contact-ink) 16%, transparent);
  padding-top: clamp(28px, 4vh, 44px);
}
.contact .channel .k { font-size: 0.68rem; letter-spacing: 0.24em; text-transform: uppercase; color: color-mix(in srgb, var(--contact-ink) 50%, transparent); }
.contact .channel .v { margin-top: 0.5em; font-size: 1rem; transition: color .25s var(--ease); }
.contact .channel a.v:hover { color: var(--accent-ink); }

/* footer */
.footer {
  background: var(--contact-bg);
  color: color-mix(in srgb, var(--contact-ink) 58%, transparent);
  padding: clamp(28px, 4vh, 44px) var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid color-mix(in srgb, var(--contact-ink) 12%, transparent);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  transition: background .5s var(--ease), color .5s var(--ease);
}
.footer .brand { font-size: 1.05rem; color: var(--contact-ink); }
.footer .to-top { color: inherit; letter-spacing: 0.2em; text-transform: uppercase; font-size: 0.7rem; }
.footer .to-top:hover { color: var(--accent-ink); }

/* =========================================================
   Readability — balanced wrapping for running text & headings
   ========================================================= */
/* Japanese running text: wrap at natural phrase boundaries + balance lines.
   Scoped to body copy only (NOT nav/buttons/display headings, which broke
   mid-word under a global rule). */
.lead,
.jp-sub,
.about .body p,
.about .lead-statement,
.index-item p,
.cap-row p,
.contact-jp-head {
  word-break: auto-phrase;
  text-wrap: pretty;
}
.about .body p,
.lead,
.index-item p,
.cap-row p {
  hanging-punctuation: allow-end;
}
.hero-B h1 { text-wrap: pretty; }

/* keep cohesive phrases (esp. 「…」quotes) from breaking mid-phrase */
.nb { white-space: nowrap; }
/* lead-statement: explicit line structure, no mid-quote break */
.about .lead-statement .ls-l { display: block; }

/* =========================================================
   WORKS / Products (koto)
   ========================================================= */
.works { padding-block: clamp(70px, 11vh, 150px); border-top: 1px solid var(--line); }
.works .works-lead {
  margin: clamp(28px, 4.5vh, 48px) 0 clamp(32px, 5vh, 56px);
  font-family: var(--font-display-jp);
  font-weight: 500;
  font-size: clamp(1.4rem, 3vw, 2.3rem);
  line-height: 1.6;
  letter-spacing: 0.02em;
  max-width: 26ch;
  word-break: auto-phrase;
  text-wrap: pretty;
}
.works .works-lead em {
  font-family: var(--font-display-en);
  font-style: italic;
  color: var(--accent);
  letter-spacing: 0;
}
.product {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  padding: clamp(28px, 4vh, 48px);
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--bg-soft);
  transition: border-color .35s var(--ease);
}
.product:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.product-mark {
  font-family: var(--font-display-en);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1;
  color: var(--ink);
}
.product-mark .dot { color: var(--accent); }
.product-body h3 {
  margin: 0;
  font-family: var(--font-display-jp);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 600;
  letter-spacing: 0.03em;
}
.product-body h3 small {
  display: block;
  font-family: var(--font-display-en);
  font-style: italic;
  font-weight: 500;
  color: var(--ink-faint);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  margin-top: 0.35em;
}
.product-body p {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 1em 0 1.6em;
  max-width: 46ch;
  word-break: auto-phrase;
  text-wrap: pretty;
}
.product-body p strong { color: var(--ink); font-weight: 600; }
@media (max-width: 720px) {
  .product { grid-template-columns: 1fr; gap: 22px; }
}