/* ============================================
   C02 匠工務店
   Concept: Japanese Traditional Architecture
            × Wood Texture × Craftsman Pride
   ============================================ */

/* ---------- Reset ---------- */

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

/* ---------- Custom Properties ---------- */

:root {
  /* Colors */
  --color-ink:     #1C1C1C;
  --color-cypress: #C8B59E;
  --color-indigo:  #1F3A5F;
  --color-ecru:    #F2EEE3;
  --color-white:   #FFFFFF;
  --color-border:  rgba(200, 181, 158, 0.3);

  /* Fonts */
  --font-display: "Shippori Mincho", serif;
  --font-body:    "Zen Kaku Gothic New", sans-serif;

  /* Layout */
  --max-w: 1100px;
  --pad:   48px;
  --transition: 0.3s ease;
}

/* ---------- Base ---------- */

html { scroll-behavior: smooth }

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-ink);
  background: var(--color-ecru);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto }
a { color: var(--color-indigo); text-decoration: none; transition: color var(--transition) }
a:hover { color: var(--color-cypress) }
ul { list-style: none }

/* ---------- Shared Components ---------- */

.section-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--color-cypress);
  margin-bottom: 12px;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.4;
  margin-bottom: 56px;
  color: inherit;
}

/* ---------- Header ---------- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(28, 28, 28, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 3px solid var(--color-cypress);
}

.header__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px var(--pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--color-ecru);
  letter-spacing: 0.08em;
}

.header__logo-sub {
  font-size: 14px;
  font-weight: 500;
  margin-left: 4px;
  color: var(--color-cypress);
}

.header__nav { display: flex; gap: 24px; align-items: center }

.header__link {
  font-size: 13px;
  font-weight: 500;
  color: rgba(242, 238, 227, 0.7);
  transition: color var(--transition);
}

.header__link:hover { color: var(--color-ecru) }

.header__link--cta {
  background: var(--color-indigo);
  color: var(--color-ecru);
  padding: 8px 20px;
  border: 1px solid var(--color-cypress);
}

.header__link--cta:hover {
  background: var(--color-cypress);
  color: var(--color-ink);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(28, 28, 28, 0.6) 0%,
    rgba(28, 28, 28, 0.75) 100%
  );
  z-index: 1;
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  width: 100%;
  padding: 0 var(--pad);
  text-align: center;
}

.hero__eyebrow {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.25em;
  color: var(--color-cypress);
  margin-bottom: 24px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(32px, 7vw, 64px);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0.06em;
  color: var(--color-ecru);
  margin-bottom: 24px;
}

.hero__lead {
  font-size: 16px;
  color: rgba(242, 238, 227, 0.8);
  line-height: 2;
  margin-bottom: 40px;
}

.hero__btn {
  display: inline-block;
  padding: 16px 48px;
  background: transparent;
  color: var(--color-ecru);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.1em;
  border: 3px solid var(--color-cypress);
  transition: background var(--transition), color var(--transition);
}

.hero__btn:hover {
  background: var(--color-cypress);
  color: var(--color-ink);
}

/* ---------- About ---------- */

.about {
  padding: 120px var(--pad);
  background: var(--color-ecru);
}

.about__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: center;
}

.about__image {
  border: 3px solid var(--color-cypress);
  overflow: hidden;
}

.about__image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.about__image:hover img { transform: scale(1.03) }
.about__text { color: var(--color-ink) }

.about__body {
  font-size: 15px;
  color: rgba(28, 28, 28, 0.75);
  line-height: 2;
  margin-bottom: 20px;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.about__stat {
  text-align: center;
  padding: 24px 8px;
  border: 3px solid var(--color-border);
}

.about__stat-number {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 800;
  display: block;
  color: var(--color-indigo);
}

.about__stat-label {
  font-size: 12px;
  color: rgba(28, 28, 28, 0.6);
  letter-spacing: 0.1em;
  margin-top: 4px;
  display: block;
}

/* ---------- Works ---------- */

.works {
  padding: 120px var(--pad);
  background: var(--color-ink);
  color: var(--color-ecru);
}

.works__inner { max-width: var(--max-w); margin: 0 auto }
.works .section-heading { color: var(--color-ecru) }

.works__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.work-card {
  border: 3px solid rgba(200, 181, 158, 0.2);
  transition: border-color var(--transition);
}

.work-card:hover { border-color: var(--color-cypress) }
.work-card__image { position: relative; overflow: hidden }

.work-card__image img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.work-card:hover .work-card__image img { transform: scale(1.05) }

.work-card__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(28, 28, 28, 0.6);
  color: var(--color-ecru);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.15em;
  opacity: 0;
  transition: opacity var(--transition);
}

.work-card:hover .work-card__overlay { opacity: 1 }
.work-card__info { padding: 24px }

.work-card__tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-cypress);
  margin-bottom: 8px;
  display: block;
}

.work-card__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.work-card__desc {
  font-size: 13px;
  color: rgba(242, 238, 227, 0.6);
  line-height: 1.8;
}

/* ---------- Services ---------- */

.services {
  padding: 120px var(--pad);
  background: var(--color-ecru);
}

.services__inner { max-width: var(--max-w); margin: 0 auto }

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  padding: 48px 32px;
  border: 3px solid var(--color-border);
  transition: border-color var(--transition), background var(--transition);
}

.service-card:hover {
  border-color: var(--color-indigo);
  background: rgba(31, 58, 95, 0.04);
}

.service-card__icon {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  color: var(--color-indigo);
  display: block;
  margin-bottom: 24px;
  line-height: 1;
}

.service-card__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  color: var(--color-ink);
}

.service-card__desc {
  font-size: 14px;
  color: rgba(28, 28, 28, 0.65);
  line-height: 1.9;
}

/* ---------- Access ---------- */

.access {
  padding: 120px var(--pad);
  background: var(--color-ink);
  color: var(--color-ecru);
}

.access__inner { max-width: var(--max-w); margin: 0 auto }
.access .section-heading { color: var(--color-ecru) }

.access__info {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 0;
  border-top: 3px solid rgba(200, 181, 158, 0.2);
}

.access__info dt,
.access__info dd {
  padding: 20px 0;
  border-bottom: 1px solid rgba(200, 181, 158, 0.15);
}

.access__info dt {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-cypress);
  letter-spacing: 0.08em;
}

.access__info dd {
  font-size: 14px;
  color: rgba(242, 238, 227, 0.8);
  line-height: 1.8;
}

/* ---------- Footer ---------- */

.footer {
  background: var(--color-ink);
  border-top: 3px solid var(--color-cypress);
  padding: 24px var(--pad);
}

.footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-cypress);
  letter-spacing: 0.08em;
}

.footer__links { display: flex; gap: 20px }

.footer__links a {
  font-size: 12px;
  color: rgba(242, 238, 227, 0.5);
  transition: color var(--transition);
}

.footer__links a:hover { color: var(--color-ecru) }
.footer__copy { font-size: 11px; color: rgba(242, 238, 227, 0.4) }

/* ============================================
   Responsive — Tablet (768px)
   ============================================ */

@media (max-width: 768px) {
  :root {
    --pad: 24px;
  }

  /* Header */
  .header__nav { gap: 14px }
  .header__link { font-size: 11px }
  .header__link--cta { padding: 6px 14px }

  /* Hero */
  .hero { min-height: 80vh }
  .hero__title { font-size: clamp(28px, 7vw, 44px) }
  .hero__lead br { display: none }

  /* About */
  .about { padding: 80px var(--pad) }
  .about__inner { grid-template-columns: 1fr; gap: 40px }
  .about__image img { height: 280px }
  .about__stats { margin-top: 32px }

  /* Works */
  .works { padding: 80px var(--pad) }
  .works__grid { grid-template-columns: 1fr; gap: 24px }
  .work-card__image img { height: 220px }

  /* Services */
  .services { padding: 80px var(--pad) }
  .services__grid { grid-template-columns: 1fr; gap: 20px }
  .service-card { padding: 36px 24px }

  /* Access */
  .access { padding: 80px var(--pad) }
  .access__info { grid-template-columns: 100px 1fr }

  /* Footer */
  .footer__inner { flex-direction: column; gap: 16px; text-align: center }
}

/* ============================================
   Responsive — Mobile (480px)
   ============================================ */

@media (max-width: 480px) {
  :root {
    --pad: 16px;
  }

  .header__logo { font-size: 22px }
  .header__nav { gap: 8px }
  .header__link { font-size: 10px }

  .hero__title { font-size: 28px }
  .hero__btn { padding: 14px 32px; font-size: 14px }

  .section-heading { font-size: 24px; margin-bottom: 40px }

  .about__stats { grid-template-columns: 1fr; gap: 8px }
  .about__stat { padding: 16px }
  .about__image img { height: 200px }

  .access__info { grid-template-columns: 1fr }
  .access__info dt { padding-bottom: 0; border-bottom: none }
  .access__info dd { padding-top: 4px }
}