/* =========================================================
   松本達彦 ― ある曲芸師の歩み / Stylesheet
   ========================================================= */

:root {
  --paper:     #faf6f0;   /* warm paper base */
  --paper-2:   #f2ebe1;   /* section tint */
  --paper-3:   #e9e0d3;   /* raised tint */
  --ink:       #2c2722;   /* main text */
  --ink-2:     #4d463d;   /* body text */
  --muted:     #8a8075;   /* captions, meta */
  --line:      #ded3c3;   /* hairlines */
  --clay:      #b4633f;   /* accent — terracotta */
  --clay-2:    #96502f;
  --olive:     #6f7a5a;   /* secondary accent */
  --sand:      #e3d6c2;   /* illustration fill */

  --maxw: 1080px;
  --prose: 34rem;
  --serif: "Shippori Mincho B1", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --sans:  "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  --latin: "Cormorant Garamond", Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--sans);
  font-weight: 400;
  color: var(--ink-2);
  background: var(--paper);
  line-height: 2.05;
  letter-spacing: .02em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

.section { padding: clamp(4.5rem, 10vw, 9rem) 1.5rem; }
.section-inner { max-width: var(--maxw); margin: 0 auto; }

/* ---------- Shared type ---------- */
.kicker {
  font-family: var(--latin);
  font-size: .82rem;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--clay);
  margin-bottom: 1.1rem;
}
.section-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.6rem, 3.4vw, 2.2rem);
  color: var(--ink);
  line-height: 1.5;
  letter-spacing: .06em;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

/* ---------- Illustration primitives ---------- */
.ill { width: 100%; height: auto; }
.s-line,
.s-line-thin,
.s-line-dash,
.s-accent-line {
  fill: none;
  stroke: var(--ink);
  stroke-linecap: round;
  stroke-linejoin: round;
}
.s-line { stroke-width: 1.8; }
.s-line-thin { stroke-width: 1.1; stroke: var(--muted); }
.s-line-dash { stroke-width: 1.1; stroke: var(--muted); stroke-dasharray: 3 7; }
.s-accent-line { stroke: var(--clay); stroke-width: 1.8; }
.s-accent { fill: var(--clay); }
.s-fill-sand { fill: var(--sand); }
.s-dots circle { fill: var(--muted); opacity: .55; }

/* =========================================================
   PROGRESS BAR
   ========================================================= */
.progress {
  position: fixed; top: 0; left: 0; z-index: 120;
  height: 2px; width: 0;
  background: var(--clay);
  transition: width .1s linear;
}

/* =========================================================
   HEADER / NAV
   ========================================================= */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .4s, border-color .4s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(250,246,240,.9);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.15rem 1.5rem;
}
.brand { display: flex; flex-direction: column; line-height: 1.35; }
.brand-jp { font-family: var(--serif); font-weight: 600; font-size: 1.02rem; color: var(--ink); letter-spacing: .12em; }
.brand-en { font-family: var(--latin); font-size: .68rem; letter-spacing: .26em; color: var(--muted); text-transform: uppercase; }

.nav-links { display: flex; align-items: center; gap: 2.2rem; }
.nav-links a {
  position: relative; font-size: .88rem; letter-spacing: .1em;
  color: var(--ink-2); transition: color .25s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -5px;
  height: 1px; width: 0; background: var(--clay); transition: width .3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--clay); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 1.5px; background: var(--ink); transition: transform .3s, opacity .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 8rem 1.5rem 6rem;
  background: linear-gradient(180deg, var(--paper-2), var(--paper) 70%);
}
.hero-inner {
  max-width: var(--maxw); margin: 0 auto; width: 100%;
  display: grid; grid-template-columns: 1.15fr .85fr;
  gap: clamp(2rem, 6vw, 5rem); align-items: center;
}
.hero-title { margin: 0 0 2rem; }
.hero-title-main {
  display: block; font-family: var(--serif); font-weight: 500;
  font-size: clamp(2.8rem, 8vw, 4.6rem); line-height: 1.2;
  color: var(--ink); letter-spacing: .1em;
}
.hero-title-en {
  display: block; font-family: var(--latin); font-weight: 300;
  font-size: clamp(.72rem, 1.8vw, .86rem); letter-spacing: .42em;
  color: var(--muted); margin-top: 1rem;
}
.hero-lead {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(1.1rem, 2.6vw, 1.45rem); line-height: 2;
  color: var(--ink); letter-spacing: .08em; margin-bottom: 1.6rem;
}
.hero-desc { max-width: var(--prose); color: var(--ink-2); font-size: .98rem; }
.hero-art { display: flex; justify-content: center; }
.ill--hero { max-width: 340px; }

.scroll-cue {
  position: absolute; left: 50%; bottom: 2.2rem; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .7rem;
}
.scroll-cue-line { width: 1px; height: 46px; background: var(--line); position: relative; overflow: hidden; }
.scroll-cue-line::after {
  content: ""; position: absolute; top: -46px; left: 0; width: 1px; height: 46px;
  background: var(--clay); animation: cue 2.4s ease-in-out infinite;
}
@keyframes cue { 0% { top: -46px; } 60%, 100% { top: 46px; } }
.scroll-cue-text { font-size: .68rem; letter-spacing: .28em; color: var(--muted); }

/* =========================================================
   STORY / CHAPTERS
   ========================================================= */
.chapter { padding-block: clamp(3.5rem, 8vw, 6rem); }
.chapter-inner {
  max-width: var(--maxw); margin: 0 auto;
  display: grid; grid-template-columns: .9fr 1.1fr;
  gap: clamp(2rem, 7vw, 5.5rem); align-items: center;
}
.chapter--flip .chapter-art { order: 2; }
.chapter-art {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 2px;
}
.chapter-body { max-width: var(--prose); }
.chapter-num {
  font-family: var(--latin); font-size: .76rem; letter-spacing: .32em;
  color: var(--clay); text-transform: uppercase; margin-bottom: .9rem;
}
.chapter-title {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(1.45rem, 3.6vw, 2rem); color: var(--ink);
  letter-spacing: .08em; line-height: 1.6; margin-bottom: 1.6rem;
  position: relative; padding-bottom: 1.4rem;
}
.chapter-title::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 42px; height: 1px; background: var(--clay);
}
.chapter-body p { margin-bottom: 1.3rem; font-size: 1rem; }
.chapter-body p:last-child { margin-bottom: 0; }

/* ---------- Pull quotes ---------- */
.pullquote { padding-block: clamp(3rem, 7vw, 5rem); text-align: center; }
.pullquote blockquote {
  max-width: 44rem; margin: 0 auto;
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(1.2rem, 3.2vw, 1.8rem); line-height: 2.1;
  color: var(--ink); letter-spacing: .1em;
  padding: clamp(2rem, 5vw, 3rem) 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}

/* =========================================================
   WORDS
   ========================================================= */
.words { background: var(--paper-2); }
.words-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 3vw, 2.5rem); }
.word {
  background: var(--paper); border: 1px solid var(--line); border-radius: 2px;
  padding: clamp(1.8rem, 3vw, 2.4rem);
  position: relative;
}
.word::before {
  content: ""; position: absolute; top: 0; left: 0;
  width: 2px; height: 42px; background: var(--clay);
}
.word blockquote {
  font-family: var(--serif); font-weight: 500; font-size: 1rem;
  line-height: 2.1; color: var(--ink); letter-spacing: .04em;
}

/* =========================================================
   TIMELINE
   ========================================================= */
.tl-list { list-style: none; max-width: 46rem; }
.tl-row {
  display: grid; grid-template-columns: 6.5rem 1fr; gap: 1.5rem;
  align-items: baseline;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}
.tl-row:first-child { border-top: 1px solid var(--line); }
.tl-year {
  font-family: var(--latin); font-size: 1.22rem; letter-spacing: .12em;
  color: var(--clay); position: relative; padding-left: 1.1rem;
}
.tl-year::before {
  content: ""; position: absolute; left: 0; top: .62em;
  width: 5px; height: 5px; border-radius: 50%; background: var(--clay);
}
.tl-text { font-size: .96rem; line-height: 1.95; }

/* =========================================================
   CLOSING
   ========================================================= */
.closing { background: var(--paper-2); text-align: center; }
.closing-inner { max-width: 40rem; margin: 0 auto; }
.ill--rule { width: 120px; margin: 0 auto 1.8rem; }
.closing-text {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(1.05rem, 2.6vw, 1.3rem); line-height: 2.2;
  color: var(--ink); letter-spacing: .08em;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer { border-top: 1px solid var(--line); padding: 3.5rem 1.5rem 3rem; }
.footer-inner { display: flex; flex-direction: column; gap: 1.2rem; align-items: center; text-align: center; }
.footer-name { font-family: var(--serif); font-weight: 600; color: var(--ink); letter-spacing: .12em; }
.footer-name span { font-family: var(--latin); font-weight: 300; font-size: .74rem; letter-spacing: .26em; color: var(--muted); margin-left: .6rem; }
.footer-note { font-size: .78rem; line-height: 2; color: var(--muted); }

/* =========================================================
   SCROLL REVEAL
   Content is visible by default; it is hidden for the fade-in only when
   scripting is available (html.js), so a script failure can never leave
   the page blank.
   ========================================================= */
.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity .9s ease, transform .9s ease; }
.js .reveal.visible { opacity: 1; transform: none; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  .nav-links {
    position: fixed; inset: 0 0 0 auto; width: min(280px, 80vw);
    flex-direction: column; align-items: flex-start; gap: 1.6rem;
    background: var(--paper-2); border-left: 1px solid var(--line);
    padding: 6rem 2rem 2rem; transform: translateX(105%); transition: transform .35s;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-toggle { display: flex; z-index: 101; }

  .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
  .hero-art { order: -1; }
  .ill--hero { max-width: 240px; }

  .chapter-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .chapter--flip .chapter-art { order: 0; }
  .chapter-art { max-width: 420px; }

  .words-list { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  body { line-height: 1.95; }
  .br-sp { display: none; }
  .tl-row { grid-template-columns: 1fr; gap: .3rem; }
  .tl-year { padding-left: 1rem; }
  .scroll-cue { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001s !important; animation-iteration-count: 1 !important; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
}