/* =========================================================
   木創匠建 (MOKUSOUKEN) — Website styles
   Palette derived from the logo (cream / tan / dark brown)
   ========================================================= */

:root {
  --bg:        #F5F1E7;  /* クリーム地（ロゴ背景） */
  --bg-alt:    #EFE8D8;
  --surface:   #FBF9F3;
  --brand:     #A48D66;  /* タン（鉋・円） */
  --brand-dark:#7C6642;
  --ink:       #322A20;  /* 濃茶（見出し・本文） */
  --ink-soft:  #5F5545;
  --line:      #E2D8C4;
  --white:     #ffffff;
  --shadow:    0 18px 50px -24px rgba(50, 38, 20, .35);
  --radius:    14px;
  --maxw:      1120px;

  --serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans:  "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  letter-spacing: .02em;
}

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

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 24px;
}

/* ---------- Typography helpers ---------- */
.serif { font-family: var(--serif); }
.eyebrow {
  font-family: var(--serif);
  color: var(--brand-dark);
  letter-spacing: .28em;
  font-size: .78rem;
  text-transform: uppercase;
  display: inline-block;
  margin: 0 0 14px;
}
.section-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1.4;
  margin: 0 0 22px;
  letter-spacing: .04em;
}
.lead {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 42em;
}

/* 意味のまとまりごとに改行させる（語中で折り返さない） */
.wbrk { display: inline-block; }

/* ---------- Section frame ---------- */
.section { padding: clamp(64px, 9vw, 120px) 0; }
.section--alt { background: var(--bg-alt); }
.section--surface { background: var(--surface); }
.section-head { margin-bottom: 52px; }
.section-head.center { text-align: center; }
.section-head.center .lead { margin-inline: auto; }

/* ---------- Buttons ---------- */
.btn {
  --_bg: var(--brand-dark);
  --_fg: #fff;
  display: inline-flex;
  align-items: center;
  gap: .6em;
  background: var(--_bg);
  color: var(--_fg);
  font-family: var(--sans);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .06em;
  padding: 15px 30px;
  border-radius: 999px;
  border: 1.5px solid var(--_bg);
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn--ghost {
  --_bg: transparent;
  --_fg: var(--ink);
  border-color: var(--brand);
}
.btn--ghost:hover { background: rgba(164,141,102,.12); }

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
  padding: 18px 0;
}
.site-header.scrolled {
  background: rgba(245,241,231,.9);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--line);
  padding: 10px 0;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 46px; height: 46px; }
.brand .brand-name { font-family: var(--serif); font-weight: 600; font-size: 1.15rem; letter-spacing: .12em; }
.brand .brand-en { font-size: .62rem; letter-spacing: .3em; color: var(--brand-dark); display: block; }

.nav { display: flex; align-items: center; gap: 30px; }
.nav a { font-size: .9rem; font-weight: 500; position: relative; }
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 0; height: 1.5px; background: var(--brand-dark); transition: width .25s ease;
}
.nav a:hover::after { width: 100%; }
.nav .btn { padding: 10px 22px; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 26px; height: 2px; background: var(--ink); margin: 5px 0; transition: .3s; }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 78% 12%, rgba(164,141,102,.16), transparent 60%),
    linear-gradient(180deg, #F7F3EA 0%, #F1EADB 100%);
}
.hero::after {
  /* かんな屑を思わせる薄い曲線テクスチャ */
  content: "";
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(115deg, rgba(124,102,66,.05) 0 2px, transparent 2px 26px);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
  padding-block: 120px;
}
.hero-copy h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.2rem, 5.6vw, 4rem);
  line-height: 1.35;
  letter-spacing: .06em;
  margin: 0 0 26px;
}
.hero-copy h1 .accent { color: var(--brand-dark); }
.hero-copy .sub {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 30em;
  margin: 0 0 38px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

.hero-logo {
  justify-self: center;
  width: min(100%, 420px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  filter: drop-shadow(0 30px 50px rgba(50,38,20,.18));
  animation: floaty 6s ease-in-out infinite;
}
@keyframes floaty { 0%,100% { transform: translateY(0);} 50% { transform: translateY(-12px);} }

.scroll-hint {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  z-index: 2; font-size: .68rem; letter-spacing: .3em; color: var(--brand-dark);
  writing-mode: vertical-rl; display: flex; align-items: center; gap: 10px;
}
.scroll-hint::after { content: ""; width: 1px; height: 46px; background: var(--brand); animation: pulse 1.8s ease-in-out infinite; }
@keyframes pulse { 0%,100%{opacity:.3; transform: scaleY(.6);} 50%{opacity:1; transform: scaleY(1);} }

/* =========================================================
   Concept
   ========================================================= */
.concept-lead {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  line-height: 2.1;
  letter-spacing: .05em;
  text-align: center;
  max-width: 24em;
  margin: 0 auto 12px;
}
.concept-lead .hl {
  background: linear-gradient(transparent 62%, rgba(164,141,102,.35) 62%);
  padding: 0 .1em;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 64px;
}
.pillar {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 38px 30px;
  transition: transform .3s ease, box-shadow .3s ease;
}
.pillar:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.pillar .num {
  font-family: var(--serif);
  font-size: .8rem; letter-spacing: .2em; color: var(--brand); display: block; margin-bottom: 16px;
}
.pillar h3 { font-family: var(--serif); font-size: 1.3rem; margin: 4px 0 12px; letter-spacing: .04em; }
.pillar p { margin: 0; color: var(--ink-soft); font-size: .95rem; }

/* ---- 一気通貫 flow ---- */
.flow {
  margin-top: 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 44px 34px;
}
.flow h3 { font-family: var(--serif); font-size: 1.4rem; text-align: center; margin: 0 0 8px; letter-spacing: .05em; }
.flow p.flow-note { text-align: center; color: var(--ink-soft); margin: 0 0 34px; font-size: .95rem; }
.flow-steps { display: flex; flex-wrap: wrap; justify-content: center; align-items: stretch; gap: 10px; }
.flow-step {
  flex: 1 1 130px; max-width: 160px; text-align: center;
  background: var(--bg); border-radius: 12px; padding: 20px 14px; position: relative;
}
.flow-step .st-no { font-family: var(--serif); color: var(--brand); font-size: .75rem; letter-spacing: .15em; }
.flow-step .st-name { font-family: var(--serif); font-size: 1.05rem; margin-top: 6px; }
.flow-arrow { align-self: center; color: var(--brand); font-size: 1.2rem; }

/* =========================================================
   Works (施工事例)
   ========================================================= */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.work-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform .3s ease, box-shadow .3s ease;
}
.work-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.work-thumb {
  aspect-ratio: 4 / 3;
  display: grid; place-items: center;
  color: rgba(255,255,255,.9);
  font-family: var(--serif); letter-spacing: .1em; font-size: .9rem;
  position: relative;
}
.work-thumb::after {
  content: "PHOTO"; position: absolute; bottom: 12px; right: 14px;
  font-size: .6rem; letter-spacing: .3em; opacity: .7;
}
.work-thumb.w1 { background: linear-gradient(135deg,#B7A17C,#8A7350); }
.work-thumb.w2 { background: linear-gradient(135deg,#A79A7F,#6E6047); }
.work-thumb.w3 { background: linear-gradient(135deg,#C2AE8A,#94794F); }
.work-thumb.w4 { background: linear-gradient(135deg,#9E8C6C,#5E4E36); }
.work-thumb.w5 { background: linear-gradient(135deg,#BCA783,#8F7A54); }
.work-thumb.w6 { background: linear-gradient(135deg,#AD9B79,#7A6544); }
.work-body { padding: 20px 22px 24px; }
.work-body .cat { font-size: .72rem; letter-spacing: .18em; color: var(--brand-dark); }
.work-body h3 { font-family: var(--serif); font-size: 1.15rem; margin: 8px 0 8px; }
.work-body p { margin: 0; color: var(--ink-soft); font-size: .88rem; }
.works-note { text-align: center; margin-top: 40px; color: var(--ink-soft); font-size: .9rem; }

/* =========================================================
   Company (会社情報)
   ========================================================= */
.company-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.company-table { width: 100%; border-collapse: collapse; }
.company-table th, .company-table td {
  text-align: left; padding: 18px 6px; border-bottom: 1px solid var(--line);
  vertical-align: top; font-size: .95rem;
}
.company-table th { width: 34%; font-family: var(--serif); font-weight: 600; color: var(--brand-dark); white-space: nowrap; }
.company-side {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 36px 32px;
}
.company-side h3 { font-family: var(--serif); font-size: 1.25rem; margin: 0 0 16px; }
.company-side p { color: var(--ink-soft); font-size: .95rem; margin: 0 0 14px; }

.branch-note {
  margin-top: 40px; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 32px 36px;
}
.branch-note h3 { font-family: var(--serif); font-size: 1.15rem; margin: 0 0 14px; color: var(--brand-dark); }
.branch-note .branch-name { font-weight: 600; margin: 0 0 6px; }
.branch-note .branch-addr { color: var(--ink-soft); margin: 0; font-size: .95rem; }

/* =========================================================
   Recruit (採用)
   ========================================================= */
.recruit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.recruit-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 40px 36px; position: relative; overflow: hidden;
}
.recruit-card::before {
  content: ""; position: absolute; top: -40px; right: -40px; width: 140px; height: 140px;
  background: rgba(164,141,102,.12); border-radius: 50%;
}
.recruit-card .tag {
  display: inline-block; font-size: .72rem; letter-spacing: .16em;
  background: var(--brand-dark); color: #fff; padding: 5px 14px; border-radius: 999px; margin-bottom: 18px;
}
.recruit-card h3 { font-family: var(--serif); font-size: 1.45rem; margin: 0 0 14px; }
.recruit-card p { color: var(--ink-soft); font-size: .95rem; margin: 0 0 18px; }
.recruit-card ul { margin: 0 0 24px; padding-left: 1.1em; color: var(--ink-soft); font-size: .9rem; }
.recruit-card ul li { margin-bottom: 6px; }

/* =========================================================
   Contact (お問い合わせ)
   ========================================================= */
.contact { background: linear-gradient(160deg,#3C3124,#2A2118); color: #F3ECDD; }
.contact .eyebrow { color: #C9B58E; }
.contact .section-title { color: #fff; }
.contact .lead { color: rgba(243,236,221,.8); }
.contact-cards { display: grid; grid-template-columns: repeat(auto-fit,minmax(240px,1fr)); gap: 20px; margin-top: 48px; }
.contact-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius); padding: 34px 28px; text-align: center;
  transition: transform .3s ease, background .3s ease;
}
.contact-card:hover { transform: translateY(-6px); background: rgba(255,255,255,.09); }
.contact-card .c-icon {
  width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 18px;
  display: grid; place-items: center; background: rgba(201,181,142,.18); color: #E9DCBE;
}
.contact-card .c-icon svg { width: 28px; height: 28px; }
.contact-card h3 { font-family: var(--serif); font-size: 1.1rem; margin: 0 0 8px; color: #fff; }
.contact-card p { margin: 0; font-size: .9rem; color: rgba(243,236,221,.75); word-break: break-all; }
.contact-card a.c-link { color: #E9DCBE; font-weight: 600; }

/* =========================================================
   Footer
   ========================================================= */
.site-footer { background: #241C14; color: rgba(243,236,221,.7); padding: 48px 0 30px; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; align-items: center; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { width: 40px; height: 40px; }
.footer-brand .fb-name { font-family: var(--serif); color: #F3ECDD; letter-spacing: .12em; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 20px; font-size: .85rem; }
.footer-copy { width: 100%; text-align: center; font-size: .75rem; letter-spacing: .1em; margin-top: 26px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.08); }

/* =========================================================
   Scroll reveal
   ========================================================= */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; padding-block: 130px 90px; }
  .hero-copy .sub { margin-inline: auto; }
  .hero-actions { justify-content: center; }
  .hero-logo { order: -1; width: min(72%, 300px); }
  .pillars, .works-grid, .contact-cards { grid-template-columns: 1fr 1fr; }
  .company-wrap, .recruit-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav { display: none; }
  .nav-toggle { display: block; }
  .nav.open {
    display: flex; flex-direction: column; align-items: flex-start; gap: 18px;
    position: absolute; top: 100%; right: 0; left: 0;
    background: rgba(245,241,231,.98); backdrop-filter: blur(10px);
    padding: 24px; box-shadow: var(--shadow);
  }
  .pillars, .works-grid, .contact-cards { grid-template-columns: 1fr; }
  .scroll-hint { display: none; }

  /* 一気通貫フロー：SPは縦積み・幅いっぱいで見やすく */
  .flow { padding: 34px 20px; }
  .flow-steps { flex-direction: column; align-items: stretch; gap: 6px; }
  .flow-step { max-width: none; width: 100%; padding: 16px 18px; text-align: left; display: flex; align-items: baseline; gap: 12px; }
  .flow-step .st-no { flex: 0 0 auto; }
  .flow-step .st-name { margin-top: 0; }
  .flow-arrow { transform: rotate(90deg); font-size: 1rem; line-height: 1; }
}