/* ==========================================================================
   株式会社塗工舎 — style.css
   Design Concept: 「見えないとこまで、美しい。」職人の美意識（2026-09-05改訂）
   Hero=職人写真主役 / Process section のみ積層構造(One Strong Idea)を使用
   ========================================================================== */

:root {
  /* --- Color tokens（ブランドカラー未確定。暫定トーン。MAINTENANCE_GUIDE参照） --- */
  --color-bg: #faf9f6;
  --color-bg-alt: #f1efe9;
  --color-surface: #ffffff;
  --color-text: #23241f;
  --color-text-muted: #55564e;
  --color-border: #ddd9cd;
  --color-accent: #3d5a52;
  --color-accent-strong: #2a3f39;
  --color-accent-soft: #e4ebe8;
  --color-cta: #9c5518;          /* 電話CTA用。白文字とのcontrast比 5.6:1（WCAG AA >=4.5を確保） */
  --color-cta-strong: #7a4210;   /* hover/focus用。contrast比 8.0:1 */
  --color-focus: #ffd166;
  --color-ink: #14151a;          /* Hero写真上の濃色scrim用 */

  /* --- Type scale (fluid) --- */
  --fs-eyebrow: clamp(0.75rem, 0.68rem + 0.3vw, 0.85rem);
  --fs-body: clamp(0.95rem, 0.9rem + 0.2vw, 1.05rem);
  --fs-h1: clamp(2.1rem, 1.6rem + 2.6vw, 3.6rem);
  --fs-h2: clamp(1.5rem, 1.25rem + 1.3vw, 2.1rem);
  --fs-h3: clamp(1.05rem, 0.98rem + 0.4vw, 1.25rem);
  --fs-sub: clamp(1.05rem, 0.98rem + 0.6vw, 1.35rem);
  --fs-rhythm: clamp(1.15rem, 1rem + 1vw, 1.6rem);

  /* --- Spacing scale --- */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: clamp(2.5rem, 2rem + 2.5vw, 5rem);
  --space-xl: clamp(4rem, 3rem + 5vw, 8rem);

  --measure: 38em; /* 日本語全角文字は概ね1em幅のため、ch(半角"0"基準)ではなくemで測る */
  --radius-sm: 4px;
  --radius-md: 8px;

  color-scheme: light;
}

* { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden; /* bodyへ付けるとposition:stickyの基準がずれるためhtml側で横overflowを抑える */
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  font-size: var(--fs-body);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 { line-height: 1.4; font-weight: 700; margin: 0; word-break: keep-all; overflow-wrap: break-word; }
p { margin: 0; }

/* 意図的改行のみ許可。本文への機械的<br>は使用しない（見出し専用） */
.intentional-break { display: block; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: 0.5rem; top: -3rem;
  background: var(--color-accent-strong);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 100;
  transition: top .15s ease;
}
.skip-link:focus { top: 0.5rem; }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.measure { max-width: var(--measure); }

section { position: relative; }
section[id] { scroll-margin-top: 84px; }

.section-pad {
  padding-block: var(--space-xl);
}

.eyebrow {
  display: inline-block;
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.04em;
  color: var(--color-accent-strong);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  word-break: keep-all;
  overflow-wrap: break-word;
}

.section-headline {
  font-size: var(--fs-h2);
  max-width: 22em;
  margin-bottom: var(--space-md);
}

.lead-text {
  font-size: var(--fs-sub);
  font-weight: 700;
  word-break: keep-all;
  overflow-wrap: break-word;
}
.lead-text + .lead-text { margin-top: 0.5em; }

.body-line {
  color: var(--color-text-muted);
  word-break: keep-all;
  overflow-wrap: break-word;
}
.body-line + .body-line { margin-top: 0.5em; }

/* 意味単位ごとの短い文を「リズムよく」見せる汎用コンポーネント。
   カード化・装飾ではなく、動詞・名詞の連なりそのものを視覚的な主役にする。 */
.rhythm-list {
  list-style: none;
  margin: var(--space-md) 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4em 0.9em;
}
.rhythm-list__item {
  font-size: var(--fs-rhythm);
  font-weight: 900;
  color: var(--color-accent-strong);
  position: relative;
  padding-inline-end: 0.9em;
}
.rhythm-list__item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0.35em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-cta);
}
.rhythm-list--inline {
  margin-block: var(--space-sm);
}
.rhythm-list__item--inline {
  font-size: clamp(1rem, 0.92rem + 0.5vw, 1.15rem);
  font-weight: 700;
  color: var(--color-text);
  padding-inline-end: 0.8em;
}
.rhythm-list__item--inline:not(:last-child)::after {
  background: var(--color-border);
  width: 4px;
  height: 4px;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-block: 0.85rem;
}
.site-header__name {
  font-weight: 700;
  font-size: clamp(0.95rem, 0.85rem + 0.4vw, 1.1rem);
  text-decoration: none;
}
.site-header__name small {
  display: block;
  font-weight: 400;
  font-size: 0.7em;
  color: var(--color-text-muted);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-cta);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 700;
  font-size: clamp(0.8rem, 0.7rem + 0.4vw, 0.95rem);
  white-space: nowrap;
  min-height: 44px;
}
.header-cta:hover, .header-cta:focus-visible { background: var(--color-cta-strong); }

/* ==========================================================================
   Hero — 職人写真を主役にしたフルブリード構成
   ========================================================================== */
.hero-craft {
  position: relative;
  min-height: min(92vh, 820px);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--color-ink); /* 画像読み込み前のfallback */
}
.hero-craft__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-craft__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% 32%; /* 職人の顔・眼差しを縦方向の主役帯に収める */
}
.hero-craft__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  /* 上部（顔まわり）は透明に近く保ち、下部（コピー配置域）だけを読みやすくする */
  background: linear-gradient(180deg,
    rgba(20,21,26,0.05) 0%,
    rgba(20,21,26,0.10) 38%,
    rgba(20,21,26,0.55) 68%,
    rgba(20,21,26,0.82) 100%);
}
.hero-craft__inner {
  position: relative;
  z-index: 2;
  padding-block: var(--space-lg) clamp(2.5rem, 2rem + 3vw, 4.5rem);
  color: #fff;
  width: 100%;
}
.hero-craft__main {
  font-size: var(--fs-h1);
  color: #fff;
  margin-bottom: var(--space-md);
  text-shadow: 0 2px 18px rgba(0,0,0,0.35);
}
.hero-craft__sub { max-width: 26em; margin-bottom: var(--space-md); }
.hero-craft__line {
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.1rem);
  font-weight: 500;
  color: #f2f1ec;
  word-break: keep-all;
  overflow-wrap: break-word;
  text-shadow: 0 1px 10px rgba(0,0,0,0.35);
}
.hero-craft__line + .hero-craft__line { margin-top: 0.35em; }
.hero-craft__actions { display: flex; flex-wrap: wrap; gap: var(--space-sm); align-items: center; }

@media (max-width: 640px) {
  /* 顔全体を保ちつつ、手元・刷毛まで画角に収める位置を実測で調整済み */
  .hero-craft__media img { object-position: 85% 24%; }
  .hero-craft { min-height: min(96vh, 720px); }
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-cta);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  padding: 0.95rem 1.5rem;
  border-radius: var(--radius-sm);
  min-height: 44px;
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.05rem);
  box-shadow: 0 2px 0 var(--color-cta-strong);
}
.btn-cta:hover, .btn-cta:focus-visible { background: var(--color-cta-strong); }

.btn-cta--ghost {
  background: transparent;
  color: var(--color-accent-strong);
  border: 1.5px solid var(--color-accent-strong);
  box-shadow: none;
}
.btn-cta--ghost:hover, .btn-cta--ghost:focus-visible {
  background: var(--color-accent-soft);
  color: var(--color-accent-strong);
}
.contact .btn-cta--ghost { color: #fff; border-color: rgba(255,255,255,0.6); }
.contact .btn-cta--ghost:hover, .contact .btn-cta--ghost:focus-visible {
  background: rgba(255,255,255,0.12); color: #fff;
}

/* ==========================================================================
   Problem section（自分事化）
   ========================================================================== */
.problem { background: var(--color-surface); }
.section-headline--question { color: var(--color-accent-strong); }
.problem__lead { margin-bottom: var(--space-md); }

.symptom-grid {
  list-style: none;
  margin: 0 0 var(--space-lg);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm) var(--space-md);
}
@media (min-width: 640px) {
  .symptom-grid { grid-template-columns: repeat(5, 1fr); }
}
.symptom-chip {
  border-top: 3px solid var(--color-cta);
  padding-top: 0.6rem;
}
.symptom-chip__label {
  display: block;
  font-weight: 700;
  font-size: clamp(1.05rem, 0.98rem + 0.4vw, 1.2rem);
  margin-bottom: 0.3rem;
  word-break: keep-all;
  overflow-wrap: break-word;
}
.symptom-chip__note {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  word-break: keep-all;
  overflow-wrap: break-word;
}

.problem__media {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}
@media (min-width: 640px) {
  .problem__media { grid-template-columns: 1fr 1fr; }
}
.problem__media-frame {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.problem__media-frame img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.92) brightness(0.99); }

/* ==========================================================================
   Philosophy section — サイト全体の思想的中心
   ========================================================================== */
.philosophy { background: var(--color-bg-alt); }
.philosophy__lead { margin-bottom: var(--space-sm); }
.philosophy__closing-line {
  font-size: var(--fs-rhythm);
  font-weight: 900;
  color: var(--color-accent-strong);
  margin-bottom: var(--space-lg);
  word-break: keep-all;
  overflow-wrap: break-word;
}
.philosophy__media {
  margin-bottom: var(--space-lg);
  max-width: 30rem;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.philosophy__media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.92) brightness(0.99); }
.philosophy__body { color: var(--color-text-muted); }

/* ==========================================================================
   Process section — One Strong Idea: 積層構造（このsectionのみで使用）
   ========================================================================== */
.process { background: var(--color-surface); }
.process__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}
@media (min-width: 900px) {
  .process__grid { grid-template-columns: 1.1fr 0.9fr; align-items: start; }
}
.process__media {
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.process__media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.92) brightness(0.99); }
.process__lead { margin-bottom: var(--space-md); }

.step-layers {
  list-style: none;
  margin: var(--space-md) 0 var(--space-lg);
  padding: 0;
  display: flex;
  flex-direction: column-reverse; /* DOM順=STEP06→01のためreverseでSTEP01を最下部(土台)にする */
  gap: 8px;
  max-width: 34rem;
}
.step-layers__band {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}
/* 上へ行くほど淡く：積み重なりの奥行きを出す（DOM順=STEP01が先頭。nth-childで指定） */
.step-layers__band:nth-child(1) { background: var(--color-accent-strong); } /* 土台=STEP01 */
.step-layers__band:nth-child(2) { opacity: 0.94; }
.step-layers__band:nth-child(3) { opacity: 0.88; }
.step-layers__band:nth-child(4) { opacity: 0.82; }
.step-layers__band:nth-child(5) { opacity: 0.76; }
.step-layers__band--emphasis {
  background: var(--color-cta) !important;
  opacity: 1 !important;
  box-shadow: 0 6px 14px rgba(0,0,0,0.16);
}
.step-layers__index {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  opacity: 0.85;
  flex: none;
  font-variant-numeric: tabular-nums;
}
.step-layers__label {
  font-weight: 700;
  word-break: keep-all;
  overflow-wrap: break-word;
}

@media (max-width: 480px) {
  .step-layers__band { width: 100% !important; }
}

/* ==========================================================================
   Craft section — 職人技（手・細部を主役に）
   ========================================================================== */
.craft { background: var(--color-bg-alt); }
.craft__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}
@media (min-width: 900px) {
  .craft__grid { grid-template-columns: 1.1fr 0.9fr; align-items: start; }
}
.craft__lead { margin-bottom: var(--space-sm); }
.craft__body-mid, .craft__body-closing { color: var(--color-text-muted); }
.craft__body-mid { margin-bottom: 0.25rem; }

.craft__media { display: flex; flex-direction: column; gap: var(--space-sm); }
.craft__media-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  aspect-ratio: 4 / 3;
}
.craft__media-frame img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.92) brightness(0.99); }
.craft__media-frame--wide {
  aspect-ratio: 16 / 10;
}
.craft__media-frame--wide img {
  object-position: 78% 55%; /* Hero写真の手元・刷毛の角を強調するdetail crop */
}

/* ==========================================================================
   Trust section
   ========================================================================== */
.trust { background: var(--color-surface); }
.trust__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}
@media (min-width: 860px) {
  .trust__grid { grid-template-columns: 1.2fr 0.8fr; align-items: start; }
}
.trust__lead { margin-bottom: var(--space-sm); }
.trust__body { color: var(--color-text-muted); }
.trust__media-frame {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.trust__media-frame img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.92) brightness(0.99); }

.company-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.company-table th, .company-table td {
  text-align: left;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.company-table tr:last-child th, .company-table tr:last-child td { border-bottom: none; }
.company-table th {
  width: 11.5rem; /* 「建設業許可番号」(7字)がbold書体でも折り返らない幅を確保 */
  white-space: nowrap;
  font-weight: 700;
  color: var(--color-text-muted);
  background: var(--color-surface);
}
.company-table td a { color: var(--color-accent-strong); text-decoration: underline; }

@media (max-width: 560px) {
  .company-table, .company-table thead, .company-table tbody, .company-table th, .company-table td, .company-table tr {
    display: block;
    width: 100%;
  }
  .company-table th { border-bottom: none; padding-bottom: 0.2rem; background: transparent; }
  .company-table td { padding-top: 0.2rem; }
  .company-table tr { padding: 0.75rem 0; border-bottom: 1px solid var(--color-border); }
  .company-table tr:last-child { border-bottom: none; }
}

/* ==========================================================================
   Contact（Final CTA）
   ========================================================================== */
.contact {
  background: var(--color-ink);
  color: #fff;
  text-align: center;
}
.contact .eyebrow { color: #cfcdc4; }
.contact .section-headline { max-width: 22em; margin-inline: auto; color: #fff; }
.contact__body { color: #d8d6cd; margin: 0 auto var(--space-md); }
.contact__body .body-line { color: #d8d6cd; }
.contact__phone {
  font-size: clamp(1.6rem, 1.3rem + 1.6vw, 2.4rem);
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  display: inline-block;
  margin-bottom: var(--space-md);
  font-variant-numeric: tabular-nums;
}
.contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-text);
  color: #dedbd0;
  padding-block: var(--space-lg);
  font-size: 0.9rem;
}
.site-footer a { color: #fff; }
.site-footer__name { font-weight: 700; color: #fff; margin-bottom: 0.4rem; }
.site-footer__row { margin-bottom: 0.25rem; }
.site-footer__copyright { margin-top: var(--space-sm); color: #9b9788; font-size: 0.8rem; }

/* ==========================================================================
   Reduced motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

html { scroll-behavior: smooth; }