/* =========================================================
   雅貴宝飾 — main.css
   澄んだ白 × メタリックゴールド。白地でも上質に。
   ========================================================= */

:root {
  --color-base: #ffffff;       /* 澄んだ白 */
  --color-surface: #faf8f3;    /* ごく淡い暖色面（アクセント用に控えめに） */
  --color-text: #1c1a16;       /* 温かみのある黒に近い文字 */
  --color-muted: #6c6457;      /* 補助テキスト */
  --color-gold: #9a7322;       /* 深みのあるゴールド（白地でも視認しやすい） */
  --color-gold-deep: #6f521a;  /* 深い金 */
  --color-gold-soft: #b78f37;  /* やや明るい金（ホバー等） */
  --color-line: rgba(154, 115, 34, 0.40);  /* 金のヘアライン */
  --color-line-soft: rgba(28, 26, 22, 0.12);
  /* ハイライトを抑え、白に飛ばない深い金のグラデーション */
  --gold-grad: linear-gradient(135deg, #b58f38 0%, #97712a 46%, #6f521a 100%);
  --shadow-soft: 0 26px 60px -34px rgba(76, 58, 20, 0.34);

  --font-sans: "Noto Sans JP", -apple-system, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-lat: "Cormorant Garamond", "Noto Serif JP", serif;

  --content-width: 1120px;
  --section-pad: clamp(76px, 11vw, 156px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-base);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.95;
  font-size: 16px;
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.3s var(--ease), opacity 0.3s var(--ease); }
a:hover { color: var(--color-gold); }

h1, h2, h3 { font-family: var(--font-serif); font-weight: 400; line-height: 1.45; letter-spacing: 0.08em; }

.container {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: clamp(22px, 5vw, 48px);
}

.sp-only { display: none; }

/* メタリックゴールド文字 */
.gold-text {
  background: var(--gold-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section__label,
.logo-en,
.hero__sub,
.contact-card__label { font-family: var(--font-lat); font-style: italic; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 80px;
}
.site-header__logo a { display: inline-flex; flex-direction: column; line-height: 1.2; }
.logo-name {
  font-family: var(--font-serif);
  font-size: 1.26rem; letter-spacing: 0.18em; color: var(--color-text);
}
.logo-en {
  font-size: 0.76rem; letter-spacing: 0.32em; margin-top: 5px;
  background: var(--gold-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}

.global-nav { display: flex; gap: clamp(20px, 2.6vw, 40px); list-style: none; margin: 0; padding: 0; }
.global-nav a {
  position: relative; font-family: var(--font-sans);
  font-size: 0.84rem; letter-spacing: 0.12em; color: var(--color-text);
}
.global-nav a::after {
  content: ""; position: absolute; left: 0; bottom: -7px;
  width: 100%; height: 1px; background: var(--gold-grad);
  transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease);
}
.global-nav a:hover { color: var(--color-gold); }
.global-nav a:hover::after { transform: scaleX(1); }

/* hamburger */
.nav-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; cursor: pointer; flex-direction: column; justify-content: center; gap: 6px; padding: 9px; }
.nav-toggle span { display: block; height: 1px; width: 100%; background: var(--color-gold-deep); transition: transform 0.3s var(--ease), opacity 0.3s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- buttons ---------- */
.btn { display: inline-block; font-family: var(--font-sans); font-size: 0.88rem; letter-spacing: 0.14em; padding: 16px 38px; transition: all 0.4s var(--ease); }
.btn--primary {
  background: var(--gold-grad); color: #2a1f08; font-weight: 500;
  border: 1px solid transparent; box-shadow: 0 14px 34px -16px rgba(184, 146, 63, 0.7);
}
.btn--primary:hover { filter: brightness(1.05); transform: translateY(-2px); }
.btn--ghost { color: var(--color-text); border: 1px solid var(--color-line); }
.btn--ghost:hover { border-color: var(--color-gold); color: var(--color-gold); }

/* ---------- hero ---------- */
.hero {
  position: relative; display: flex; align-items: center;
  min-height: clamp(600px, 90vh, 900px); overflow: hidden;
  background:
    radial-gradient(110% 80% at 82% 6%, rgba(184,146,63,0.13) 0%, rgba(184,146,63,0) 46%),
    radial-gradient(90% 70% at 4% 96%, rgba(184,146,63,0.07) 0%, rgba(184,146,63,0) 52%),
    linear-gradient(95deg, var(--color-base) 30%, rgba(255,255,255,0.80) 55%, rgba(255,255,255,0.42) 100%),
    url("../images/hero-atelier.jpg") center 32% / cover no-repeat,
    var(--color-base);
}
@media (max-width: 760px) {
  /* モバイルは手元写真を全面に薄く敷き、文字の可読性を優先 */
  .hero {
    background:
      radial-gradient(110% 80% at 82% 6%, rgba(184,146,63,0.13) 0%, rgba(184,146,63,0) 46%),
      linear-gradient(180deg, rgba(255,255,255,0.90) 0%, rgba(255,255,255,0.80) 55%, rgba(255,255,255,0.70) 100%),
      url("../images/hero-atelier.jpg") center / cover no-repeat,
      var(--color-base);
  }
}
.hero__inner { position: relative; z-index: 1; padding-block: var(--section-pad); }
.hero__sub {
  font-size: 1rem; letter-spacing: 0.22em; margin: 0 0 30px;
  background: var(--gold-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__title {
  font-size: clamp(2.9rem, 7.6vw, 5.2rem); font-weight: 400;
  margin: 0 0 36px; letter-spacing: 0.12em; line-height: 1.35; color: var(--color-text);
}
.hero__lead { font-size: clamp(0.98rem, 1.4vw, 1.1rem); color: var(--color-muted); max-width: 41em; margin: 0 0 48px; }
.hero__actions { display: flex; gap: 18px; flex-wrap: wrap; margin: 0; }

/* ---------- section common ---------- */
.section { position: relative; padding-block: var(--section-pad); }
.section--philosophy { background: var(--color-surface); }
.section--about { background: var(--color-surface); }

/* セクション間の金ヘアライン（白地の区切り） */
.section::before {
  content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: min(var(--content-width), calc(100% - 44px)); height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-line), transparent);
}
.hero + .section::before { display: none; }
/* 面色が変わる境目では二重線を避ける */
.section--philosophy::before,
.section--about::before { display: none; }

.section__head { margin-bottom: clamp(46px, 6vw, 70px); text-align: center; }
.section__head--left { text-align: left; }
.section__label {
  display: block; font-size: 0.95rem; letter-spacing: 0.26em; margin-bottom: 16px;
  background: var(--gold-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section__title { font-size: clamp(1.85rem, 4vw, 2.7rem); margin: 0; color: var(--color-text); }
.section__desc { margin: 22px auto 0; max-width: 44em; color: var(--color-muted); font-size: 0.92rem; }
.section__head--left .section__desc { margin-inline: 0; }

.lead-text { max-width: 42em; margin-inline: auto; color: var(--color-text); }
.section__head--left + .lead-text, .about__text .lead-text { margin-inline: 0; }
.lead-text p { margin: 0 0 1.6em; }
.lead-text p:last-child { margin-bottom: 0; }

/* ---------- works ---------- */
.works-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.work-card {
  position: relative; background: var(--color-base);
  border: 1px solid var(--color-line-soft);
  padding: clamp(32px, 4vw, 54px); overflow: hidden;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), border-color 0.45s var(--ease);
}
.work-card::before {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 2px;
  background: var(--gold-grad); transform: scaleX(0); transform-origin: left; transition: transform 0.5s var(--ease);
}
.work-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-soft); border-color: var(--color-line); }
.work-card:hover::before { transform: scaleX(1); }
.work-card__title { font-size: 1.32rem; margin: 0 0 16px; color: var(--color-text); position: relative; padding-bottom: 16px; }
.work-card__title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 34px; height: 1px; background: var(--gold-grad); }
.work-card__text { margin: 0; color: var(--color-muted); font-size: 0.92rem; }

/* ---------- pieces（一点物ギャラリー） ---------- */
.pieces-grid {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(14px, 1.6vw, 22px);
}
.piece { position: relative; margin: 0; }
.piece img {
  display: block; width: 100%; aspect-ratio: 1 / 1; object-fit: cover; object-position: center;
  border: 1px solid var(--color-line); box-shadow: var(--shadow-soft);
}
/* 金の極細額縁（他セクションと統一） */
.piece::after { content: ""; position: absolute; inset: 9px; border: 1px solid rgba(184,146,63,0.35); pointer-events: none; }
@media (max-width: 760px) {
  .pieces-grid { grid-template-columns: repeat(2, 1fr); }
}
.pieces-cta { text-align: center; margin: clamp(30px, 4vw, 52px) 0 0; }

/* ---------- about ---------- */
.about__layout { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 88px); align-items: center; }
.about__media-placeholder {
  aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center;
  background:
    radial-gradient(120% 120% at 28% 18%, rgba(184,146,63,0.16), rgba(184,146,63,0) 56%),
    linear-gradient(135deg, #f3ecdd, #ece2cc);
  color: var(--color-muted); font-size: 0.84rem; letter-spacing: 0.24em;
  border: 1px solid var(--color-line); position: relative; box-shadow: var(--shadow-soft);
}
.about__media-placeholder::after { content: ""; position: absolute; inset: 13px; border: 1px solid rgba(184,146,63,0.4); }
/* 工房写真（額縁演出はプレースホルダーから踏襲） */
.about__media { position: relative; }
.about__photo {
  display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; object-position: center;
  border: 1px solid var(--color-line); box-shadow: var(--shadow-soft);
}
.about__media:has(.about__photo)::after {
  content: ""; position: absolute; inset: 13px; border: 1px solid rgba(184,146,63,0.4); pointer-events: none;
}

/* ---------- company ---------- */
.company-table { max-width: 780px; margin: 0 auto; border-top: 1px solid var(--color-line); }
.company-row { display: grid; grid-template-columns: 190px 1fr; gap: 18px; padding: 24px 10px; border-bottom: 1px solid var(--color-line-soft); }
.company-row dt { font-family: var(--font-serif); letter-spacing: 0.12em; color: var(--color-gold-deep); }
.company-row dd { margin: 0; color: var(--color-muted); }

/* ---------- contact ---------- */
.contact-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; max-width: 780px; margin: 0 auto; }
.contact-card {
  border: 1px solid var(--color-line);
  background: linear-gradient(180deg, #fffdf8, var(--color-base));
  padding: clamp(32px, 4vw, 46px); text-align: center; display: flex; flex-direction: column; gap: 12px;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-soft); }
.contact-card__label {
  font-size: 0.98rem; letter-spacing: 0.2em;
  background: var(--gold-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.contact-card__value { font-family: var(--font-serif); font-size: clamp(1.2rem, 2.4vw, 1.6rem); color: var(--color-text); letter-spacing: 0.06em; }
.contact-card__value:hover { color: var(--color-gold); }
.contact-card__note { font-size: 0.78rem; color: var(--color-muted); }

/* ---------- footer ---------- */
.site-footer { background: var(--color-surface); color: var(--color-muted); padding-block: 64px; border-top: 1px solid var(--color-line); }
.site-footer__inner { display: flex; flex-direction: column; align-items: center; gap: 24px; text-align: center; }
.site-footer__name { font-family: var(--font-serif); font-size: 1.18rem; letter-spacing: 0.16em; color: var(--color-text); }
.site-footer__tag { display: block; font-size: 0.76rem; color: var(--color-muted); margin-top: 8px; letter-spacing: 0.18em; }
.footer-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 22px; list-style: none; margin: 0; padding: 0; font-size: 0.82rem; }
.footer-nav a:hover { color: var(--color-gold); }
.site-footer__copy { margin: 0; font-size: 0.74rem; letter-spacing: 0.16em; color: #9c917d; }

/* ---------- generic page (index/single fallback) ---------- */
.entry-title { font-size: 2rem; margin: var(--section-pad) 0 1em; color: var(--color-text); }
.entry-content { padding-bottom: var(--section-pad); }

/* ---------- scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 768px) {
  .sp-only { display: inline; }
  .nav-toggle { display: flex; }

  .site-header__nav {
    position: fixed; inset: 80px 0 auto 0;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--color-line);
    max-height: 0; overflow: hidden; transition: max-height 0.4s var(--ease);
  }
  .site-header__nav.is-open { max-height: 80vh; }
  .global-nav { flex-direction: column; gap: 0; padding: 8px 0; }
  .global-nav .menu-item { border-top: 1px solid var(--color-line-soft); }
  .global-nav .menu-item:first-child { border-top: 0; }
  .global-nav a { display: block; padding: 17px clamp(22px, 5vw, 48px); }
  .global-nav a::after { display: none; }

  .works-grid { grid-template-columns: 1fr; }
  .about__layout { grid-template-columns: 1fr; }
  .about__media { order: 2; }
  .company-row { grid-template-columns: 116px 1fr; gap: 12px; }
  .contact-cards { grid-template-columns: 1fr; }
}