/* ============================================================
   買い手ページ共通レイアウト (sp-* Web Components 用スタイル)
   ヘッダー / 検索バー / グローバルナビ / フッター
   ============================================================ */

/* ============================================================
   Utility bar (最上部)
   ============================================================ */
.utility-bar {
  background: var(--color-bg-2);
  border-bottom: 1px solid var(--color-border);
  padding: 6px 16px;
  display: flex;
  justify-content: flex-end;
  gap: 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-sub);
}
.utility-bar a {
  color: var(--color-text-sub);
  text-decoration: none;
}
.utility-bar a:hover { color: var(--color-brand-500); }

/* ============================================================
   Site header
   ============================================================ */
.site-header {
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--color-surface);
}
.site-logo {
  width: 160px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-brand-500), var(--color-brand-700));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  text-decoration: none;
  flex-shrink: 0;
  letter-spacing: 1px;
}

/* ----- 検索バー ----- */
.search-block { flex: 1; min-width: 0; }
.search-form {
  display: flex;
  border: 2px solid var(--color-dark-700);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}
.search-cat {
  background: var(--color-bg);
  border-right: 1px solid var(--color-border-strong);
  padding: 10px 12px;
  color: var(--color-text-sub);
  min-width: 140px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}
.search-cat select {
  border: none;
  background: transparent;
  outline: none;
  font-family: inherit;
  font-size: var(--font-size-base);
  width: 100%;
  cursor: pointer;
}
.search-input {
  flex: 1;
  min-width: 0;
  border: none;
  padding: 10px 12px;
  font-size: var(--font-size-lg);
  outline: none;
  font-family: inherit;
}
.search-btn {
  background: var(--color-dark-900);
  color: var(--color-text-inverse);
  border: none;
  padding: 0 24px;
  cursor: pointer;
  font-weight: var(--font-weight-bold);
  font-family: inherit;
  flex-shrink: 0;
}
.search-btn:hover { background: var(--color-dark-800); }

/* ----- ヘッダーのユーザーアクション ----- */
.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-shrink: 0;
}
.mobile-menu-btn {
  display: none;
  width: 52px;
  height: 52px;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: var(--color-surface);
  color: var(--color-text);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}
.mobile-menu-btn-line {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-dark-900);
}
.mobile-quick-links {
  display: none;
  padding: 10px 12px 12px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.mobile-quick-links:not([hidden]) {
  display: grid;
}
.mobile-quick-link {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-2);
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  position: relative;
}
.mobile-quick-link:hover {
  text-decoration: none;
  background: var(--color-bg);
}
.mobile-quick-link .ic {
  color: var(--color-brand-500);
}
.mobile-quick-badge {
  margin-left: auto;
}
.icon-btn {
  min-width: 64px;
  height: 56px;
  padding: 0 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: var(--font-size-xs);
  color: var(--color-text-sub);
  text-decoration: none;
  position: relative;
  cursor: pointer;
  white-space: nowrap;
}
.icon-btn:hover {
  background: var(--color-bg);
  text-decoration: none;
}
.icon-btn .icon { font-size: 18px; }
.icon-btn .badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--color-danger-500);
  color: var(--color-text-inverse);
  border-radius: var(--radius-pill);
  padding: 1px 5px;
  font-size: var(--font-size-xxs);
  font-weight: var(--font-weight-bold);
}
.btn-listing {
  background: var(--color-brand-500);
  color: var(--color-text-inverse);
  padding: 14px 22px;
  border-radius: var(--radius-md);
  border: none;
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  text-decoration: none;
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}
.btn-listing:hover {
  background: var(--color-brand-600);
  text-decoration: none;
}

/* ============================================================
   Global nav
   ============================================================ */
.gnav {
  background: var(--color-dark-900);
  color: var(--color-text-inverse);
  display: flex;
  padding: 0 16px;
  overflow-x: auto;
  position: relative;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.gnav::-webkit-scrollbar { display: none; }
.gnav a {
  color: var(--color-text-inverse);
  text-decoration: none;
  padding: 12px 18px;
  font-size: var(--font-size-lg);
  border-right: 1px solid var(--color-dark-700);
  white-space: nowrap;
}
.gnav a:hover {
  background: var(--color-dark-800);
  text-decoration: none;
}
.gnav a.active { background: var(--color-dark-900); }
.gnav a:first-child { border-left: 1px solid var(--color-dark-700); }

/* ============================================================
   Site footer
   ============================================================ */
.site-footer {
  background: var(--color-dark-900);
  color: var(--color-text-inverse);
  padding: 40px 24px 24px;
  margin-top: 40px;
}
.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto 28px;
}
.footer-nav h4 {
  font-size: var(--font-size-md);
  margin-bottom: 12px;
  color: var(--color-text-inverse);
  opacity: .95;
}
.footer-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-nav li {
  margin-bottom: 6px;
}
.footer-nav a {
  color: var(--color-text-inverse);
  text-decoration: none;
  font-size: var(--font-size-sm);
}
.footer-nav a:hover {
  color: var(--color-text-inverse);
  text-decoration: underline;
}
.footer-bottom {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-inverse);
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  max-width: 1100px;
  margin: 0 auto;
}

/* ============================================================
   Auth zone (.js-auth-zone)
   ============================================================ */
.js-auth-zone {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  padding: 8px 4px;
}
.js-auth-zone a { color: var(--color-brand-500); text-decoration: none; }
.js-auth-zone a:hover { text-decoration: underline; }
.js-auth-zone .auth-sep { color: var(--color-border); margin: 0 2px; }

/* ============================================================
   Shared component lock
   ページ個別CSSが後から読み込まれても、共通ヘッダー/フッターは TOP と同じ見た目を維持する。
   ============================================================ */
.utility-bar {
  background: var(--color-bg-2) !important;
  border-bottom: 1px solid var(--color-border) !important;
  padding: 6px 16px !important;
  display: flex !important;
  justify-content: flex-end !important;
  gap: 16px !important;
  font-size: var(--font-size-sm) !important;
  color: var(--color-text-sub) !important;
}
.utility-bar a {
  color: var(--color-text-sub) !important;
  text-decoration: none !important;
}
.site-header {
  padding: 16px !important;
  border-bottom: 1px solid var(--color-border) !important;
  display: flex !important;
  align-items: center !important;
  gap: 24px !important;
  background: var(--color-surface) !important;
}
.site-logo {
  width: 160px !important;
  height: 48px !important;
  background: transparent !important;
  border-radius: 0 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  color: var(--color-text-inverse) !important;
  font-weight: var(--font-weight-bold) !important;
  font-size: var(--font-size-xl) !important;
  text-decoration: none !important;
  flex-shrink: 0 !important;
  letter-spacing: 1px !important;
}
.search-block { flex: 1 !important; min-width: 0 !important; }
.search-form {
  display: flex !important;
  border: 2px solid var(--color-dark-700) !important;
  border-radius: var(--radius-md) !important;
  overflow: hidden !important;
  background: var(--color-surface) !important;
}
.search-input {
  flex: 1 !important;
  min-width: 0 !important;
  border: none !important;
  padding: 10px 12px !important;
  font-size: var(--font-size-lg) !important;
  outline: none !important;
  font-family: inherit !important;
}
.search-btn {
  background: var(--color-dark-900) !important;
  color: var(--color-text-inverse) !important;
  border: none !important;
  padding: 0 24px !important;
  cursor: pointer !important;
  font-weight: var(--font-weight-bold) !important;
  font-family: inherit !important;
  flex-shrink: 0 !important;
}
.header-actions {
  display: flex !important;
  gap: 12px !important;
  align-items: center !important;
  flex-shrink: 0 !important;
}
.icon-btn {
  min-width: 64px !important;
  height: 56px !important;
  padding: 0 6px !important;
  border: 1px solid var(--color-border) !important;
  border-radius: var(--radius-md) !important;
  background: var(--color-bg-2) !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 2px !important;
  font-size: var(--font-size-xs) !important;
  color: var(--color-text-sub) !important;
  text-decoration: none !important;
  position: relative !important;
  cursor: pointer !important;
  white-space: nowrap !important;
}
.site-footer {
  background: var(--color-dark-900) !important;
  color: var(--color-text-inverse) !important;
  padding: 40px 24px 24px !important;
  margin-top: 40px !important;
}
.footer-nav {
  display: grid !important;
  grid-template-columns: repeat(4, 1fr) !important;
  gap: 24px !important;
  max-width: 1100px !important;
  margin: 0 auto 28px !important;
}
.footer-nav h4 {
  font-size: var(--font-size-md) !important;
  margin-bottom: 12px !important;
  color: var(--color-text-inverse) !important;
  opacity: .95 !important;
}
.footer-nav a {
  color: var(--color-text-inverse) !important;
  text-decoration: none !important;
  font-size: var(--font-size-sm) !important;
}
.footer-bottom {
  text-align: center !important;
  font-size: var(--font-size-xs) !important;
  color: var(--color-text-inverse) !important;
  padding-top: 16px !important;
  border-top: 1px solid rgba(255, 255, 255, .1) !important;
  max-width: 1100px !important;
  margin: 0 auto !important;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 980px) {
  .icon-btn { min-width: 56px !important; height: 48px !important; font-size: 10px !important; }
  .icon-btn .icon { font-size: 16px !important; }
  .search-cat { min-width: 100px !important; }
  .footer-nav { grid-template-columns: repeat(2, 1fr) !important; }
}
@media (max-width: 860px) {
  .site-header {
    gap: 8px !important;
    padding: 8px !important;
    align-items: center !important;
  }
  .site-header .site-logo {
    width: 140px !important;
    height: 42px !important;
    min-width: 140px !important;
    padding: 0 !important;
  }
  .search-block {
    flex: 1 1 auto !important;
    min-width: 0 !important;
  }
  .search-form {
    min-height: 40px !important;
    height: 40px !important;
    width: 100% !important;
  }
  .site-header .search-cat {
    display: none !important;
    width: 0 !important;
    min-width: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    overflow: hidden !important;
  }
  .search-input {
    padding: 0 10px !important;
    font-size: 16px !important;
    height: 100% !important;
  }
  .search-btn {
    min-width: 52px !important;
    padding: 0 10px !important;
    font-size: 14px !important;
    height: 100% !important;
  }
  .header-actions {
    gap: 4px !important;
    margin-left: auto !important;
  }
  .header-actions .icon-btn { display: none !important; }
  .js-auth-zone {
    display: none !important;
  }
  .site-header .mobile-menu-btn {
    display: inline-flex !important;
    width: 40px !important;
    height: 40px !important;
    border-radius: 10px !important;
  }
  .header-actions .btn-listing { padding: 10px 14px !important; font-size: var(--font-size-md) !important; }
}
@media (max-width: 640px) {
  .gnav {
    padding: 0 8px;
  }
  .gnav a {
    padding: 12px 16px;
    font-size: var(--font-size-md);
  }
  .site-header {
    gap: 4px !important;
    padding: 4px !important;
    align-items: center !important;
  }
  .site-header .site-logo {
    width: 123px !important;
    height: 39px !important;
    min-width: 123px !important;
    padding: 0 !important;
  }
  .search-block {
    flex: 1 1 auto !important;
    min-width: 0 !important;
  }
  .search-input {
    padding: 0 8px !important;
  }
  .search-btn {
    min-width: 48px !important;
    padding: 0 8px !important;
    font-size: 13px !important;
  }
  .site-header .mobile-menu-btn {
    width: 36px !important;
    height: 36px !important;
    border-radius: 8px !important;
  }
  .mobile-quick-links {
    grid-template-columns: 1fr 1fr;
  }
}