/* ============================================================
   layout.css — Containers, header, footer, sections
   ============================================================ */

/* ---------- Containers ---------- */
.l-container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 40px);
}
.l-container--narrow { max-width: var(--container-narrow); }

/* ---------- Section ---------- */
.l-section {
  padding-block: clamp(56px, 10vw, 112px);
}
.l-section--tight  { padding-block: clamp(40px, 6vw, 72px); }
.l-section--accent {
  background: var(--color-surface-alt);
}
.l-section__head {
  text-align: center;
  margin-bottom: clamp(32px, 5vw, 56px);
  display: grid;
  gap: 12px;
  justify-items: center;
}
.l-section__head h2 { font-size: var(--fs-h2); }
.l-section__head .t-lead { max-width: 640px; }

/* ---------- Grid helpers ---------- */
.l-grid { display: grid; gap: var(--space-4); }
.l-grid--2 { grid-template-columns: 1fr; }
.l-grid--3 { grid-template-columns: 1fr; }
.l-grid--gap-lg { gap: var(--space-5); }
@media (min-width: 768px) {
  .l-grid--2 { grid-template-columns: repeat(2, 1fr); }
  .l-grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .l-grid--3 { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Header ---------- */
.l-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out);
}
.l-header.is-scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(255, 255, 255, 0.95);
}
.l-header__inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.l-header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.l-header__brand small {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  margin-top: -2px;
}

.l-nav {
  display: none;
  align-items: center;
  gap: 4px;
}
.l-nav a {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition: background var(--dur-fast) var(--ease-out);
}
.l-nav a:hover { background: var(--color-primary-light); color: var(--color-primary-dark); }
.l-nav a[aria-current="page"] {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 600;
}
.l-header__cta { display: none; }
@media (min-width: 1024px) {
  .l-nav { display: flex; }
  .l-header__cta { display: inline-flex; }
}

.l-header__menu-toggle {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
}
.l-header__menu-toggle:hover { background: var(--color-primary-light); }
.l-header__menu-toggle span,
.l-header__menu-toggle span::before,
.l-header__menu-toggle span::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-fast);
}
.l-header__menu-toggle span { position: relative; }
.l-header__menu-toggle span::before { position: absolute; top: -7px; left: 0; }
.l-header__menu-toggle span::after { position: absolute; top: 7px; left: 0; }
.l-header__menu-toggle[aria-expanded="true"] span { background: transparent; }
.l-header__menu-toggle[aria-expanded="true"] span::before { transform: translateY(7px) rotate(45deg); }
.l-header__menu-toggle[aria-expanded="true"] span::after  { transform: translateY(-7px) rotate(-45deg); }
@media (min-width: 1024px) {
  .l-header__menu-toggle { display: none; }
}

/* ---- ヘッダー アカウントメニュー（ログイン状態） ---- */
.l-header__auth { display: inline-flex; align-items: center; min-width: 0; }
/* ログイン（未ログイン時）ボタン */
.l-auth__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
  text-decoration: none;
  border: 0;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.l-auth__btn:hover { background: var(--color-primary); color: #fff; }

/* アバター（クリックでメニュー） */
.l-auth__menu-wrap { position: relative; }
.l-auth__avatar {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 0;
  cursor: pointer;
  background: var(--color-primary);
  color: #fff;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.l-auth__avatar:hover { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(139,22,143,.32); }
.l-auth__avatar-letter { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; line-height: 1; }

/* ドロップダウン */
.l-auth__menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 240px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 44px rgba(0,0,0,.16);
  padding: 8px;
  z-index: 1200;
  animation: l-auth-pop var(--dur-fast) var(--ease-out);
}
@keyframes l-auth-pop { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.l-auth__menu[hidden] { display: none; }
.l-auth__menu-head {
  display: grid; gap: 4px;
  padding: 10px 12px 12px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 6px;
}
.l-auth__menu-name { font-weight: 700; color: var(--color-text); word-break: break-all; }
.l-auth__menu-email { font-size: 0.8rem; color: var(--color-text-soft); word-break: break-all; }
.l-auth__menu-role {
  justify-self: start;
  margin-top: 4px;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem; font-weight: 700;
}
.l-auth__menu-role--staff      { background: var(--color-primary-light); color: var(--color-primary-dark); }
.l-auth__menu-role--university { background: #e9f7ee; color: #1c8c4a; }
.l-auth__menu-role--external   { background: #fff5e0; color: #9a6a00; }
.l-auth__menu-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 11px 12px;
  border: 0;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 0.92rem; font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  cursor: pointer;
}
.l-auth__menu-item:hover { background: var(--color-primary-light); color: var(--color-primary-dark); }

/* モバイル/タブレットでは、アバターがヘッダー中央付近に来て right:0 基準だと左へはみ出すため、
   ドロップダウンを画面右端に固定表示して全体が必ず見えるようにする（見切れバグ修正）。 */
@media (max-width: 1023px) {
  .l-auth__menu {
    position: fixed;
    top: calc(var(--header-height) + 8px);
    right: 12px;
    left: auto;
    width: min(320px, calc(100vw - 24px));
    min-width: 0;
    max-width: calc(100vw - 24px);
  }
}

/* Mobile drawer */
.l-mobile-nav {
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background: var(--color-surface);
  padding: 24px;
  z-index: 90;
  transform: translateY(-100%);
  visibility: hidden;
  opacity: 0;
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-fast), visibility 0s linear var(--dur-base);
  overflow-y: auto;
}
.l-mobile-nav.is-open {
  transform: translateY(0);
  visibility: visible;
  opacity: 1;
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-fast), visibility 0s;
}
.l-mobile-nav ul { display: grid; gap: 4px; }
.l-mobile-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border: 1px solid var(--color-border);
}
.l-mobile-nav a:hover,
.l-mobile-nav a[aria-current="page"] {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-color: var(--color-primary-light);
}
.l-mobile-nav a::after {
  content: "→";
  color: var(--color-primary);
}
.l-mobile-nav .c-button { width: 100%; margin-top: 16px; min-height: 56px; }
@media (min-width: 1024px) {
  .l-mobile-nav { display: none; }
}

/* ---------- Footer ---------- */
.l-footer {
  background: #1a1322;
  color: #d8d2e0;
  padding-block: var(--space-7) var(--space-5);
}
.l-footer__inner {
  display: grid;
  gap: var(--space-6);
}
.l-footer__brand h3 {
  font-family: var(--font-display);
  color: #fff;
  font-size: 1.5rem;
}
.l-footer__brand p {
  font-size: 0.95rem;
  margin-top: 8px;
  color: #b8afc4;
  max-width: 480px;
}
.l-footer__cols {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}
.l-footer__col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #fff;
  margin-bottom: 12px;
}
.l-footer__col ul li { margin-bottom: 8px; }
.l-footer__col a {
  color: #b8afc4;
  text-decoration: none;
  font-size: 0.95rem;
}
.l-footer__col a:hover { color: #fff; text-decoration: underline; }
.l-footer__bottom {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid #2d2237;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.85rem;
  color: #8a82a0;
}
@media (min-width: 768px) {
  .l-footer__inner { grid-template-columns: 1.2fr 2fr; }
  .l-footer__cols { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Page hero ---------- */
.l-page-hero {
  background:
    linear-gradient(90deg, rgba(42, 7, 46, 0.92) 0%, rgba(74, 12, 79, 0.78) 48%, rgba(111, 17, 115, 0.42) 100%),
    linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #a72cab 100%);
  background-position: center;
  background-size: cover;
  color: #fff;
  /* 写真が大きすぎないよう高さを制御（PCでもスマホでも適切なバナー比率に） */
  padding-block: clamp(72px, 10vw, 120px);
  min-height: clamp(300px, 40vh, 440px);
  display: grid;
  align-content: center;
  position: relative;
  overflow: hidden;
}
.l-page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.08), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(244, 169, 58, 0.18), transparent 40%);
  pointer-events: none;
}
.l-page-hero__inner {
  position: relative;
  display: grid;
  gap: 16px;
}
/* 見出し・本文は読みやすい行長に制限しつつ、左端は本文カラムと揃える */
.l-page-hero__inner h1 { max-width: 20ch; }
.l-page-hero__inner p { max-width: 48ch; }
/* スマホでは写真を低めのバナーにして可読性とテンポを優先 */
@media (max-width: 767px) {
  .l-page-hero {
    min-height: 200px;
    padding-block: 44px 36px;
  }
  .l-page-hero h1 { font-size: clamp(1.7rem, 8vw, 2.25rem); }
  .l-page-hero p { font-size: 0.95rem; line-height: 1.7; }
}
.l-page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
}
.l-page-hero p {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.85;
}
.l-page-hero .t-eyebrow {
  color: #f4a93a;
}
.l-page-hero .t-eyebrow::before { background: #f4a93a; }
.l-page-hero--reserve {
  background-image:
    linear-gradient(90deg, rgba(42, 7, 46, 0.92) 0%, rgba(74, 12, 79, 0.78) 48%, rgba(111, 17, 115, 0.42) 100%);
}
.l-page-hero--guidelines {
  background-image:
    linear-gradient(90deg, rgba(42, 7, 46, 0.92) 0%, rgba(74, 12, 79, 0.78) 48%, rgba(111, 17, 115, 0.42) 100%);
}
.l-page-hero--calendar {
  background-image:
    linear-gradient(90deg, rgba(42, 7, 46, 0.92) 0%, rgba(74, 12, 79, 0.78) 48%, rgba(111, 17, 115, 0.42) 100%);
}
.l-page-hero--eventlog {
  background-image:
    linear-gradient(90deg, rgba(42, 7, 46, 0.92) 0%, rgba(74, 12, 79, 0.78) 48%, rgba(111, 17, 115, 0.42) 100%);
}

/* ---- Portal site button (museum portal) ---- */
.l-nav__portal {
  margin-left: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.l-nav__portal:hover { background: var(--color-primary); color: #fff; }
.l-mobile-nav__portal { color: var(--color-primary); border-color: var(--color-primary) !important; font-weight: 700; }

/* ---- モバイルUX強化（監査確定指摘） ---- */
/* アバター（アカウントメニュー開閉）を 44pt 以上に（Apple HIG / Fitts） */
.l-auth__avatar { width: 44px; height: 44px; }
/* ロールバッジの文字色をAA化（権限区分は予約可否に直結＝視認性重要） */
.l-auth__menu-role--university { color: #157a3f; } /* on #e9f7ee = 4.89:1 */
.l-auth__menu-role--external   { color: #845800; } /* on #fff5e0 = 5.74:1 */
/* フッター最下部のコントラスト/サイズ改善 */
.l-footer__bottom { font-size: 0.875rem; color: #a79fb8; } /* on #1a1322 = 7.15:1 */

/* ---- アカウントメニュー内「ご利用の立場」トグル（学内＝無料／学外団体＝有料） ---- */
.l-auth__menu-mode { padding: 4px 12px 10px; border-bottom: 1px solid var(--color-border); margin-bottom: 6px; }
.l-auth__menu-mode-title { display: block; font-size: 0.72rem; color: var(--color-text-muted); margin-bottom: 6px; }
.l-auth__mode { display: flex; gap: 6px; }
.l-auth__mode-btn {
  flex: 1; min-height: 40px; padding: 6px 8px;
  border: 1px solid var(--color-border); border-radius: 8px;
  background: #fff; color: var(--color-text);
  font-size: 0.8rem; font-weight: 700; line-height: 1.2; cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.l-auth__mode-btn:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }
.l-auth__mode-btn.is-active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }