@charset "UTF-8";

/* =========================================================
   ALCHEMIA, Inc. — 和モダン × プレミアム
   Tailwind CDN を補完するベース & 装飾スタイル
   ========================================================= */

:root {
  /* Color */
  --c-bg:           #faf7f2;
  --c-bg-alt:       #ffffff;
  --c-paper:        #f3ede2;
  --c-ink:          #1a1a1a;
  --c-ink-soft:     #4a4a4a;
  --c-ink-mute:     #6b6b6b;
  --c-line:         #d9d2c5;
  --c-line-soft:    #ece7dd;
  --c-gold:         #b08d57;
  --c-gold-deep:    #8a6b3d;
  --c-vermilion:    #b8412a;
  --c-vermilion-soft:#d4674e;

  /* Type */
  --ff-serif-ja: "Noto Serif JP", "Yu Mincho", "游明朝", "YuMincho", "ヒラギノ明朝 ProN", serif;
  --ff-serif-tc: "Noto Serif TC", "Songti TC", "Source Han Serif TC", serif;
  --ff-sans-en:  "Inter", "Helvetica Neue", Arial, sans-serif;

  /* Spacing */
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px;
  --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;

  /* Radius / Shadow */
  --r-sm:2px; --r-md:4px; --r-lg:8px;
  --sh-1: 0 1px 2px rgba(26,26,26,.06);
  --sh-2: 0 8px 24px rgba(26,26,26,.08);
  --sh-3: 0 20px 40px rgba(26,26,26,.10);

  /* Layout */
  --w-content: 1120px;
  --w-narrow:  880px;

  /* Misc */
  --transition: 200ms cubic-bezier(.2,.7,.2,1);
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-rendering: optimizeLegibility; }
body {
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--ff-serif-ja);
  line-height: 1.75;
  font-feature-settings: "palt";
}
html[lang="zh-TW"] body { font-family: var(--ff-serif-tc); }
html[lang="en"]    body { font-family: var(--ff-sans-en); line-height: 1.65; }

/* FOUC回避：i18n適用前は非表示 */
body[data-i18n-pending] { opacity: 0; }

/* ページ遷移トランジション（fade in / fade out） */
body {
  opacity: 1;
  transition: opacity 350ms cubic-bezier(.4, 0, .2, 1);
}
body.is-leaving {
  opacity: 0;
  pointer-events: none;
}

/* View Transitions API（対応ブラウザではクロスフェード） */
@view-transition { navigation: auto; }
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 350ms;
  animation-timing-function: cubic-bezier(.4, 0, .2, 1);
}

/* Line Awesome アイコン補助 */
.la, .las, .lar, .lab {
  font-size: 1em;
  line-height: 1;
  vertical-align: -0.1em;
}
.icon-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.icon-list { list-style: none; padding: 0; margin: 0; }
.icon-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 6px 0;
}
.icon-list li > .las,
.icon-list li > .lar,
.icon-list li > .lab {
  color: var(--c-vermilion);
  font-size: 1.05em;
  margin-top: 4px;
  flex-shrink: 0;
}

img, svg, video { max-width: 100%; height: auto; display: block; }
button { font: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-vermilion); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 2px;
}

/* ---------- 和の装飾：見出しライン ---------- */
.heading-jp {
  position: relative;
  font-family: var(--ff-serif-ja);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-ink);
  padding-bottom: 0.5em;
}
html[lang="zh-TW"] .heading-jp { font-family: var(--ff-serif-tc); }
html[lang="en"]    .heading-jp { font-family: var(--ff-sans-en); letter-spacing: 0.04em; }
.heading-jp::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-vermilion) 0 8px, var(--c-gold) 8px 100%);
  margin-top: 0.6em;
}

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(250,247,242,0.85);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--c-line-soft);
  transition: box-shadow var(--transition), background var(--transition);
}
.site-header[data-scrolled="true"] {
  background: rgba(250,247,242,0.95);
  box-shadow: var(--sh-1);
}
.site-header .logo { color: var(--c-ink); transition: color var(--transition); }
.site-header .logo:hover { color: var(--c-vermilion); }

/* ---------- ナビ ---------- */
.nav-link {
  position: relative;
  padding: 6px 2px;
  color: var(--c-ink);
  font-size: 14px;
  letter-spacing: 0.05em;
}
.nav-link::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--c-gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.nav-link:hover { color: var(--c-vermilion); }
.nav-link:hover::after,
.nav-link[aria-current="page"]::after { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--c-vermilion); font-weight: 600; }

/* 言語スイッチャー */
.lang-btn {
  padding: 4px 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-ink-mute);
  background: transparent;
  border: 0;
  transition: color var(--transition);
}
.lang-btn:hover { color: var(--c-vermilion); }
.lang-btn[aria-pressed="true"] {
  color: var(--c-vermilion);
  font-weight: 600;
}

/* ---------- ヒーロー ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1200px 600px at 20% 0%, rgba(176,141,87,0.10), transparent 60%),
    radial-gradient(1000px 500px at 100% 100%, rgba(184,65,42,0.06), transparent 60%),
    var(--c-bg);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(26,26,26,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,26,26,0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
}
.hero-kicker {
  font-family: var(--ff-sans-en);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--c-gold-deep);
  text-transform: uppercase;
}
.hero-title {
  font-family: var(--ff-serif-ja);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: 0.04em;
  line-height: 1.3;
  color: var(--c-ink);
}
html[lang="zh-TW"] .hero-title { font-family: var(--ff-serif-tc); }
html[lang="en"]    .hero-title { font-family: var(--ff-sans-en); font-weight: 600; }
.hero-lead {
  color: var(--c-ink-soft);
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  line-height: 1.9;
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px;
  font-size: 14px;
  letter-spacing: 0.08em;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--c-ink);
  color: var(--c-bg);
}
.btn-primary:hover {
  background: var(--c-vermilion);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--sh-2);
}
.btn-outline {
  background: transparent;
  color: var(--c-ink);
  border-color: var(--c-line);
}
.btn-outline:hover {
  background: var(--c-ink);
  color: var(--c-bg);
  border-color: var(--c-ink);
}
.btn-vermilion {
  background: var(--c-vermilion);
  color: #fff;
}
.btn-vermilion:hover {
  background: #9c3823;
  transform: translateY(-1px);
  box-shadow: var(--sh-2);
}
.btn-arrow::after {
  content: "→";
  margin-left: 4px;
  transition: transform var(--transition);
}
.btn-arrow:hover::after { transform: translateX(4px); }

/* ---------- カード ---------- */
.card {
  background: var(--c-bg-alt);
  border: 1px solid var(--c-line-soft);
  border-radius: 2px;
  transition: all var(--transition);
}
.card:hover {
  border-color: var(--c-line);
  box-shadow: var(--sh-2);
  transform: translateY(-2px);
}

/* ---------- テーブル（profile/recruit用） ---------- */
.alc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.alc-table th, .alc-table td {
  text-align: left;
  padding: 18px 20px;
  vertical-align: top;
  border-bottom: 1px solid var(--c-line-soft);
}
.alc-table th {
  width: 28%;
  background: var(--c-paper);
  font-weight: 600;
  color: var(--c-ink);
  letter-spacing: 0.05em;
}
.alc-table tr:last-child th,
.alc-table tr:last-child td { border-bottom: 0; }
.alc-table ul { margin: 0; padding-left: 1.2em; }
.alc-table ul li { line-height: 1.9; }

@media (max-width: 640px) {
  .alc-table, .alc-table tbody, .alc-table tr, .alc-table th, .alc-table td {
    display: block;
    width: 100%;
  }
  .alc-table th {
    padding: 10px 14px;
    border-bottom: 0;
    background: var(--c-paper);
  }
  .alc-table td {
    padding: 14px 14px 18px;
    border-bottom: 1px solid var(--c-line-soft);
  }
}

/* ---------- ニュースリスト ---------- */
.news-list { list-style: none; padding: 0; margin: 0; }
.news-list > li {
  padding: 18px 0;
  border-bottom: 1px dotted var(--c-line);
  display: grid;
  grid-template-columns: 7em 1fr;
  gap: 16px;
  align-items: baseline;
}
.news-list time {
  font-family: var(--ff-sans-en);
  color: var(--c-gold-deep);
  font-size: 13px;
  letter-spacing: 0.05em;
}
.news-list a { color: var(--c-ink); border-bottom: 1px solid transparent; }
.news-list a:hover { color: var(--c-vermilion); border-bottom-color: var(--c-vermilion); }
@media (max-width: 640px) {
  .news-list > li { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- フッター ---------- */
.site-footer {
  margin-top: 96px;
  border-top: 1px solid var(--c-line);
  background: var(--c-bg-alt);
}
.site-footer .footer-logo { color: var(--c-ink); }

/* ---------- 朱の callout ---------- */
.callout-vermilion {
  border-left: 3px solid var(--c-vermilion);
  background: rgba(184,65,42,0.04);
  padding: 16px 20px;
  color: var(--c-ink-soft);
  font-size: 14px;
}

/* ---------- バッジ ---------- */
.badge {
  display: inline-block;
  padding: 2px 10px;
  font-size: 11px;
  letter-spacing: 0.12em;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  color: var(--c-ink-mute);
}
.badge-ended {
  border-color: rgba(107,107,107,0.4);
  background: rgba(107,107,107,0.05);
}

/* ---------- アクセシビリティ ---------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* ---------- モバイルメニュー ---------- */
.mobile-nav[hidden] { display: none; }
.mobile-nav {
  border-top: 1px solid var(--c-line-soft);
  background: var(--c-bg-alt);
  animation: slideDown var(--transition);
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- 印刷 ---------- */
@media print {
  .site-header, .site-footer, .lang-btn, #navToggle, .mobile-nav { display: none !important; }
  body { background: #fff; color: #000; }
  a::after { content: " (" attr(href) ")"; font-size: 0.85em; color: #555; }
}