/* ============================================
   あわいのたね ― 共通スタイル
   淡い、静かな、余白のあるデザイン
   ============================================ */

:root {
  --washi: #faf8f3;          /* 和紙のような生成り */
  --washi-deep: #f3efe6;     /* すこし濃い生成り */
  --sumi: #5c564e;           /* 淡い墨色（本文） */
  --sumi-light: #918a7f;     /* 薄墨（補足） */
  --awai-green: #a8b8a0;     /* 淡い若葉 */
  --awai-green-deep: #7d9174;
  --awai-pink: #e8d8d0;      /* 淡い桜鼠 */
  --awai-blue: #c3cfd4;      /* 淡い水色 */
  --line: #e0d9cc;           /* 罫線 */
  --board: #46554c;          /* 黒板の深緑 */
  --chalk: #f4f1e8;          /* チョークの白 */
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--washi);
  color: var(--sumi);
  font-family: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-weight: 400;
  line-height: 2;
  letter-spacing: 0.08em;
  -webkit-font-smoothing: antialiased;
}

p, li, dd, h1, h2, h3 {
  line-break: strict;
  overflow-wrap: break-word;
  text-wrap: pretty;
}

/* 対応ブラウザーでは、日本語を語句のまとまりで折り返す。 */
@supports (word-break: auto-phrase) {
  p, li, dd, h1, h2, h3 {
    word-break: auto-phrase;
  }
}

.keep-phrase {
  white-space: nowrap;
}

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

a { color: var(--awai-green-deep); text-decoration: none; transition: opacity .3s; }
a:hover { opacity: .7; }

/* ---------- ヘッダー ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 5vw;
  background: rgba(250, 248, 243, .85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(224, 217, 204, .5);
  /* ページ最上部では隠し、スクロールしたら現れる */
  transform: translateY(-100%);
  transition: transform .45s ease;
}
.site-header.visible { transform: translateY(0); }

.site-header .logo {
  font-size: 1.05rem;
  letter-spacing: .35em;
  color: var(--sumi);
  text-decoration: none;
}

.site-header nav { display: flex; gap: 1.8rem; }

.mobile-nav-toggle { display: none; }

.site-header nav a {
  font-size: .82rem;
  letter-spacing: .18em;
  color: var(--sumi-light);
  padding-bottom: .2rem;
  border-bottom: 1px solid transparent;
}
.site-header nav a:hover,
.site-header nav a.current {
  color: var(--sumi);
  border-bottom-color: var(--awai-green);
  opacity: 1;
}

main { padding-top: 64px; }

/* ---------- ボタン ---------- */
.btn {
  display: inline-block;
  padding: .95rem 3.2rem;
  border: 1px solid var(--awai-green-deep);
  color: var(--awai-green-deep);
  background: transparent;
  font-family: inherit;
  font-size: .92rem;
  letter-spacing: .3em;
  text-indent: .3em;
  cursor: pointer;
  border-radius: 2px;
  transition: all .4s ease;
}
.btn:hover {
  background: var(--awai-green-deep);
  color: var(--washi);
  opacity: 1;
}
.btn--fill {
  background: var(--awai-green-deep);
  color: var(--washi);
}
.btn--fill:hover { background: var(--sumi); border-color: var(--sumi); }

/* ---------- 見出し ---------- */
.section-title {
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: .4em;
  text-indent: .4em;
  text-align: center;
  color: var(--sumi);
  margin-bottom: .8rem;
}
.section-sub {
  text-align: center;
  font-size: .78rem;
  letter-spacing: .25em;
  color: var(--awai-green-deep);
  margin-bottom: 3.2rem;
}
.section-sub::before,
.section-sub::after {
  content: "";
  display: inline-block;
  width: 2.2rem;
  height: 1px;
  background: var(--line);
  vertical-align: middle;
  margin: 0 1rem;
}

/* ---------- フッター ---------- */
.site-footer {
  margin-top: 6rem;
  padding: 3.5rem 5vw 2.5rem;
  background: var(--washi-deep);
  text-align: center;
}
.site-footer .footer-title {
  display: block;
  font-size: 1rem;
  letter-spacing: .4em;
  margin-bottom: 1.2rem;
  color: var(--sumi);
  text-decoration: none;
}
.site-footer nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.8rem;
  flex-wrap: wrap;
}
.site-footer nav a { font-size: .8rem; color: var(--sumi-light); letter-spacing: .15em; }
.site-footer .credit {
  font-size: .7rem;
  color: var(--sumi-light);
  letter-spacing: .1em;
  line-height: 1.9;
}
.site-footer .legal-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: .65rem 1.5rem;
  margin: -.6rem 0 1.5rem;
}
.site-footer .legal-links a {
  color: var(--sumi-light);
  font-size: .68rem;
  letter-spacing: .1em;
}

/* ---------- ポリシー・販売者情報 ---------- */
.policy-wrap {
  width: min(760px, 88vw);
  margin: 4.5rem auto 0;
}
.policy-lead {
  max-width: 680px;
  margin: 0 auto 3.5rem;
  color: var(--sumi);
  font-size: .88rem;
  line-height: 2.35;
}
.policy-section {
  padding: 2.2rem 0;
  border-top: 1px solid var(--line);
}
.policy-section:last-of-type { border-bottom: 1px solid var(--line); }
.policy-section h2 {
  margin-bottom: 1.15rem;
  color: var(--awai-green-deep);
  font-size: .92rem;
  font-weight: 500;
  letter-spacing: .22em;
}
.policy-section p,
.policy-section li {
  font-size: .82rem;
  line-height: 2.15;
}
.policy-section ul,
.policy-section ol { padding-left: 1.5em; }
.policy-section p + p,
.policy-section ul + p { margin-top: .9rem; }
.policy-table {
  width: 100%;
  border-collapse: collapse;
  border-top: 1px solid var(--line);
}
.policy-table th,
.policy-table td {
  padding: 1.2rem 1rem;
  border-bottom: 1px solid var(--line);
  font-size: .8rem;
  line-height: 2;
  text-align: left;
  vertical-align: top;
}
.policy-table th {
  width: 30%;
  color: var(--sumi-light);
  font-weight: 400;
  letter-spacing: .08em;
}
.policy-updated {
  margin-top: 2rem;
  color: var(--sumi-light);
  font-size: .72rem;
  text-align: right;
}
.policy-back {
  margin-top: 3rem;
  text-align: center;
}

@media (max-width: 600px) {
  .policy-wrap { width: min(88vw, 520px); margin-top: 3rem; }
  .policy-lead { font-size: .82rem; line-height: 2.2; }
  .policy-section { padding: 1.8rem 0; }
  .policy-table,
  .policy-table tbody,
  .policy-table tr,
  .policy-table th,
  .policy-table td { display: block; width: 100%; }
  .policy-table tr { border-bottom: 1px solid var(--line); }
  .policy-table th { padding: 1rem 0 .2rem; border: 0; font-size: .7rem; }
  .policy-table td { padding: 0 0 1rem; border: 0; }
}

/* ---------- 商品写真の拡大表示 ---------- */
[data-lightbox] {
  cursor: zoom-in;
}
[data-lightbox]:focus-visible {
  outline: 2px solid var(--awai-green-deep);
  outline-offset: 4px;
}
body.lightbox-open { overflow: hidden; }
.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 4.5rem 4vw 2rem;
  background: rgba(39, 37, 33, .88);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .25s ease, visibility .25s ease;
}
.image-lightbox.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.image-lightbox-inner {
  display: flex;
  max-width: 92vw;
  max-height: calc(100vh - 6.5rem);
  flex-direction: column;
  align-items: center;
  gap: .7rem;
}
.image-lightbox img {
  width: auto;
  max-width: 92vw;
  max-height: calc(100vh - 9rem);
  object-fit: contain;
  box-shadow: 0 12px 45px rgba(0, 0, 0, .28);
}
.image-lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  width: 2.8rem;
  height: 2.8rem;
  border: 1px solid rgba(255, 255, 255, .55);
  border-radius: 50%;
  background: rgba(0, 0, 0, .12);
  color: #fff;
  font-family: inherit;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}
.image-lightbox-close:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

@media (max-width: 600px) {
  .image-lightbox { padding: 4rem 3vw 1.5rem; }
  .image-lightbox img { max-width: 94vw; max-height: calc(100vh - 8rem); }
}

/* ---------- フォーム共通 ---------- */
.form-field { margin-bottom: 1.8rem; }
.form-field label {
  display: block;
  font-size: .84rem;
  letter-spacing: .2em;
  margin-bottom: .55rem;
  color: var(--sumi);
}
.form-field .req {
  font-size: .68rem;
  color: #c08a80;
  margin-left: .6rem;
  letter-spacing: .1em;
}
.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="tel"],
.form-field select,
.form-field textarea {
  width: 100%;
  padding: .8rem 1rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: #fff;
  font-family: inherit;
  font-size: .95rem;
  color: var(--sumi);
  letter-spacing: .05em;
  transition: border-color .3s;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--awai-green);
  box-shadow: 0 0 0 3px rgba(168, 184, 160, .15);
}
.form-note {
  font-size: .76rem;
  color: var(--sumi-light);
  line-height: 1.9;
  margin-top: .4rem;
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 640px) {
  body { letter-spacing: .035em; }
  .site-header {
    flex-direction: row;
    gap: 1rem;
    min-height: 62px;
    padding: .7rem 5vw;
    transform: translateY(0);
  }
  .site-header .logo { font-size: .88rem; letter-spacing: .22em; }
  .mobile-nav-toggle {
    display: inline-flex;
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0;
    border: 1px solid rgba(92, 86, 78, .22);
    border-radius: 50%;
    background: rgba(255, 255, 255, .72);
    color: var(--sumi);
    cursor: pointer;
  }
  .mobile-nav-toggle span {
    display: block;
    width: 17px;
    height: 1px;
    background: currentColor;
    transition: transform .3s ease, opacity .3s ease;
  }
  .site-header.menu-open .mobile-nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .site-header.menu-open .mobile-nav-toggle span:nth-child(2) { opacity: 0; }
  .site-header.menu-open .mobile-nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .site-header nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: auto;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: .65rem 7vw 1rem;
    background: rgba(250, 248, 243, .98);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 30px rgba(92, 86, 78, .09);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity .25s ease, transform .25s ease, visibility .25s ease;
  }
  .site-header.menu-open nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }
  .site-header nav a {
    width: 100%;
    padding: .78rem .2rem;
    border-bottom: 1px solid rgba(224, 217, 204, .72);
    font-size: .82rem;
    letter-spacing: .1em;
    text-align: left;
    white-space: normal;
  }
  .site-header nav a:last-child { border-bottom: 0; }
  .site-header nav a.current { border-bottom-color: rgba(224, 217, 204, .72); }
  .section-title {
    font-size: 1.18rem;
    letter-spacing: .24em;
    text-indent: .24em;
  }
  main { padding-top: 62px; }
}