/* =========================================================
 * chrome.css — サイト共通chrome（header / footer）
 *
 * ここが唯一の正本。style.css は先頭で @import し、LP(index.html) は
 * style.css を読まないため <link> で直接読み込む。
 * 以前は LP 側にインラインで複製していたため、ブレークポイントも
 * ブランドマークの寸法もオレンジの色番号もズレていた。複製を作らないこと。
 *
 * 変数は style.css が無い文脈でも動くようフォールバック付きで参照する。
 * ページ固有の上書き (.journal-page .top-nav / .guide-page-ar .topbar) は
 * style.css 側に残してある。
 * ========================================================= */

.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 9px; padding: 5px 12px;
  background: rgba(16, 28, 44, 0.92);
  backdrop-filter: blur(8px);
  color: #fff;
}

.brand { display: flex; align-items: center; gap: 8px; min-width: 0; text-decoration: none; color: #fff; }

.brand-mark {
  display: grid; place-items: center;
  width: 29px; height: 29px; border-radius: 8px;
  background: var(--accent, #e8704a); color: #fff;
  font-family: var(--font-serif, "Hiragino Mincho ProN", "Yu Mincho", YuMincho, "Noto Serif JP", Georgia, serif); font-size: 16px; font-weight: 700;
}

.brand-text { min-width: 0; display: grid; gap: 1px; }

.brand-name { min-width: 0; font-weight: 700; letter-spacing: 0.08em; font-size: 14px; }

.brand-name small,
.brand-sub { display: block; font-size: 9px; font-weight: 400; opacity: 0.72; letter-spacing: 0.12em; }

.top-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 1 1 auto;
  min-width: 0;
}

.top-nav a {
  color: rgba(255,255,255,0.78);
  text-decoration: none;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 11.5px;
  font-weight: 700;
  white-space: nowrap;
}

.top-nav-more {
  position: relative;
  flex-shrink: 0;
  z-index: 2;
}

.top-nav-more summary {
  display: block;
  color: rgba(255,255,255,0.78);
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 11.5px;
  font-weight: 800;
  white-space: nowrap;
  cursor: pointer;
  list-style: none;
}

.top-nav-more summary::-webkit-details-marker { display: none; }

.top-nav-more summary::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 5px;
  vertical-align: 2px;
  border-left: 3.5px solid transparent;
  border-right: 3.5px solid transparent;
  border-top: 4px solid currentColor;
}

.top-nav-more[open] summary,
.top-nav-more summary:hover,
.top-nav-more summary:focus-visible {
  background: rgba(255,255,255,0.12);
  color: #fff;
  outline: 0;
}

.top-nav-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  display: grid;
  min-width: 190px;
  padding: 8px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 14px;
  background: rgba(16, 28, 44, 0.96);
  box-shadow: 0 18px 38px rgba(0,0,0,0.22);
  backdrop-filter: blur(12px);
}

.top-nav-menu a {
  display: block;
  padding: 9px 10px;
  border-radius: 10px;
  color: rgba(255,255,255,0.84);
  font-size: 12px;
}

.top-nav-menu .top-nav-menu-compact { display: none; }

.top-nav a:hover,
.top-nav a:focus-visible {
  background: rgba(255,255,255,0.12);
  color: #fff;
  outline: 0;
}

.lang-switch { display: flex; flex-shrink: 0; gap: 4px; background: rgba(255,255,255,0.12); border-radius: 99px; padding: 3px; }

.lang-switch button {
  border: 0; background: transparent; color: rgba(255,255,255,0.7);
  font-size: 11.5px; padding: 4px 10px; border-radius: 99px;
}

.lang-switch a {
  color: rgba(255,255,255,0.86);
  text-decoration: none;
  font-size: 11.5px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 99px;
}

.lang-switch a:hover,
.lang-switch a:focus-visible {
  background: #fff;
  color: var(--night, #101c2c);
  outline: 0;
}

.lang-switch button.active,
.lang-switch a.active { background: #fff; color: var(--night, #101c2c); font-weight: 700; }

@media (min-width: 900px) {
  .topbar {padding: 10px 24px; gap: 16px;}
  .brand {gap: 10px;}
  .brand-mark {width: 38px; height: 38px; border-radius: 10px; font-size: 20px;}
  .brand-name {font-size: 16px;}
  .brand-sub {font-size: 10px;}
  .top-nav {gap: 8px;}
  .top-nav a,
  .top-nav-more summary {padding: 7px 12px; font-size: 13px;}
  .top-nav-menu a {font-size: 13px;}
  .lang-switch button {font-size: 12.5px; padding: 6px 12px;}
}

@media (max-width: 1099px) {
  .topbar {display: grid; grid-template-columns: minmax(0, 1fr) auto; min-width: 0;}
  .brand {min-width: 0;}
  .brand-name,
  .brand-name small,
  .brand-sub {min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;}
  .top-nav {grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; flex-wrap: wrap; row-gap: 4px; min-width: 0; max-width: 100%; overflow: visible; padding-top: 2px;}
  .top-nav a,
  .top-nav-more summary {white-space: nowrap;}
  .lang-switch {min-width: max-content; white-space: nowrap;}
}

@media (max-width: 540px) {
  .topbar {display: grid; grid-template-columns: minmax(0, 1fr) auto; padding: 5px 10px;}
  .brand {overflow: hidden;}
  .brand-mark {flex-shrink: 0;}
  .brand-name, .brand-name small, .brand-sub {overflow: hidden; text-overflow: ellipsis; white-space: nowrap;}
  .brand-name small, .brand-sub {letter-spacing: 0.08em;}
  .top-nav {grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; gap: 2px; overflow: visible; padding-top: 2px; scrollbar-width: none; position: relative; z-index: 2;}
  .top-nav::-webkit-scrollbar {display: none;}
  .top-nav-more {position: static;}
  .top-nav a,
  .top-nav-more summary {padding: 4px 7px; font-size: 11px;}
  .top-nav-overflow {display: none;}
  .top-nav-menu {right: 0; left: auto; min-width: min(72vw, 230px); max-height: calc(100dvh - 120px); overflow-y: auto;}
  .top-nav-menu .top-nav-menu-compact {display: block;}
  .lang-switch button {padding: 4px 9px;}
}

/* ===== Shared footer ===== */
.footer {
  margin-top: 80px;
  padding: 46px 24px 60px;
  background: var(--night, #101c2c);
  color: rgba(255,255,255,0.75);
  text-align: center;
  font-size: 13px;
}
.footer-brand {
  margin-bottom: 12px;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.1em;
}
.footer p { max-width: 520px; margin: 0 auto 8px; }
.footer-links a {
  color: rgba(255,255,255,0.86);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.footer-credit {
  margin-top: 16px;
  color: var(--accent-soft, #f5c9a8);
  font-family: var(--font-serif, var(--serif, "Hiragino Mincho ProN", "Yu Mincho", YuMincho, "Noto Serif JP", Georgia, serif));
}