/* =========================
   Base
   ========================= */

:root {
  /* ちょっとくすんだ“酸化した古金色” */
  --gold-oxidized: #c7a96b;
  --gold-oxidized-soft: rgba(199, 169, 107, 0.85);

  /* 全体の黒ベース */
  --bg-black: #020203;

  /* ベロア調ダークグリーン（セクション用） */
  --green-velour-base: #050f0b;
  --green-velour-deep: #020806;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #f5f5f5;
  background-color: var(--bg-black);
  line-height: 1.7;
}

/* =========================
   Layout / Section
   ========================= */
.section {
  padding: 80px 20px;
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.en-sub {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.7;
}

h1,
h2,
h3 {
  margin: 0 0 16px;
}

/* =========================
   Header / Navigation
   ========================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(0, 0, 0, 0.6);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.brand-main {
  font-size: 20px;
  letter-spacing: 0.18em;
}

.brand-sub {
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  opacity: 0.7;
}

/* PCナビ（横並び） */
.site-nav ul {
  display: flex;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-size: 12px;
  letter-spacing: 0.15em;
  text-decoration: none;
  text-transform: uppercase;
  color: #f5f5f5;
  opacity: 0.8;
}

.site-nav a:hover {
  opacity: 1;
}

/* =========================
   Hamburger Button
   ========================= */
.nav-toggle {
  display: none; /* PCでは非表示。タブレット以下で表示 */
  position: relative;
  width: 32px;
  height: 24px;
  border: none;
  background: none;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 999px;
  background: #f5f5f5;
  transition: transform 0.25s ease, top 0.25s ease, opacity 0.2s ease;
}

.nav-toggle span:nth-child(1) {
  top: 3px;
}

.nav-toggle span:nth-child(2) {
  top: 11px;
}

.nav-toggle span:nth-child(3) {
  top: 19px;
}

/* 開いているとき（Xマーク） */
.nav-toggle.is-open span:nth-child(1) {
  top: 11px;
  transform: rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  top: 11px;
  transform: rotate(-45deg);
}

/* =========================
   Hero
   ========================= */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 64px; /* 固定ヘッダー分 */
  overflow: hidden;
}

/* 背景：昨夜のトップ画像＋暗め */
.hero-bg {
  position: absolute;
  inset: 0;
  background: url("../img/hero-top.jpg") center center / cover no-repeat;
  filter: brightness(0.45);
  z-index: -2;
}

/* 黒〜透明グラデーションのオーバーレイ */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.9) 70%);
  z-index: -1;
}

/* 中央コンテンツ */
.hero-content {
  position: relative;
  text-align: center;
  padding: 0 20px;
}

/* テキスト版ロゴ（画像に差し替え予定ならこのままでOK） */
.hero-logo-text {
  margin: 0 0 24px;
  font-weight: 400;
}

.hero-logo-main {
  display: block;
  font-size: 52px;
  letter-spacing: 0.35em;
  color: var(--gold-oxidized);
}

.hero-logo-sub {
  display: block;
  font-size: 12px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  margin-top: 6px;
  opacity: 0.8;
  color: var(--gold-oxidized-soft);
}


/* 画像ロゴ用（使うときは .hero-logo-text の代わりに） */
/*
.hero-logo {
  width: 260px;
  max-width: 60vw;
  margin: 0 auto 24px;
  display: block;
}
*/

.hero-tagline {
  margin: 0 auto 32px;
  max-width: 520px;
  font-size: 14px;
  opacity: 0.9;
}

.hero-cta {
  display: inline-block;
  padding: 12px 36px;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-decoration: none;
  text-transform: uppercase;
  border-radius: 999px;
  border: 1px solid var(--gold-oxidized-soft);
  background:
    radial-gradient(circle at top left,
      rgba(199, 169, 107, 0.22),
      rgba(0, 0, 0, 0.92)
    );
  color: #f5f5f5;
}

/* =========================
   Sections
   ========================= */
.section-story,
.section-origin {
  background-color: #050505;
}
.comingsoon {
  padding: 120px 20px;
  text-align: center;
  background: #000;
}

.comingsoon-inner h2 {
  margin: 0 0 14px;
  font-size: 34px;
  letter-spacing: 0.25em;
  color: var(--gold-oxidized);
}

.comingsoon-inner p {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.7);
}
.section-products {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at top, #111, var(--green-velour-base));
}

/* ベロアっぽい“ムラ”をうっすらかける */
.section-products::before {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(circle at 20% 0%, rgba(80, 120, 90, 0.35), transparent 55%),
    radial-gradient(circle at 80% 100%, rgba(30, 70, 50, 0.4), transparent 55%);
  mix-blend-mode: soft-light;
  opacity: 0.7;
  pointer-events: none;
}

.section-contact {
  background-color: #000;
}

.section h2 {
  font-size: 26px;
  margin-bottom: 16px;
}



.section-story h2 {
  color: var(--gold-oxidized);
}

.section-products h2,
.section-origin h2,
.section-contact h2 {
  color: #f5f5f5;
}




/* プロダクトカード */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.product-card {
  border-radius: 16px;
  padding: 20px;
  border: 1px solid rgba(199, 169, 107, 0.17); /* 古金色の縁 */
  background: radial-gradient(
      circle at top left,
      rgba(199, 169, 107, 0.08),
      rgba(0, 0, 0, 0.92)
  );
  backdrop-filter: blur(3px);
}

/* =========================
   Footer
   ========================= */
.site-footer {
  text-align: center;
  padding: 24px 20px 32px;
  font-size: 12px;
  background-color: #000;
  opacity: 0.75;
}

/* =========================
   Responsive : Tablet & Down
   ========================= */
@media (max-width: 1024px) {
  .header-inner {
    padding-inline: 14px;
  }

  /* ハンバーガー表示 */
  .nav-toggle {
    display: block;
  }

  /* ナビをドロワー風＋スライドダウンアニメーション */
  .site-nav {
    position: absolute;
    top: 56px; /* ヘッダー高さに合わせて調整可 */
    right: 0;
    left: 0;
    padding: 0 16px;
    background: rgba(0, 0, 0, 0.96);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);

    /* アニメーション用の初期状態 */
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-8px);
    visibility: hidden;
    pointer-events: none;

    transition:
      max-height 0.25s ease,
      opacity 0.25s ease,
      transform 0.25s ease;
  }

  .site-nav.is-open {
    padding-top: 12px;
    padding-bottom: 16px;
    max-height: 260px; /* メニューの高さに合わせて必要なら調整 */
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .site-nav a {
    display: block;
    padding: 6px 4px;
    font-size: 13px;
  }
}

/* =========================
   Responsive : Small (Phone)
   ========================= */
@media (max-width: 768px) {
  .hero-logo-main {
    font-size: 34px;
    letter-spacing: 0.24em;
  }

  .hero-logo-sub {
    font-size: 10px;
  }

  .hero-tagline {
    font-size: 13px;
  }

  .section {
    padding: 60px 16px;
  }
}