:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-muted: #f7f7f5;
  --text: #041322;
  --muted: #8694c4;
  --border: #dbd8d7;
  --line: #dbd8d7;
  --max-width: 1120px;
  --accent-font: "Reddit Mono", "SFMono-Regular", Consolas, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

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

a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-style: solid;
}

/* 見出し内のリンクは点線にしない */
h1 a, h2 a, h3 a, h4 a, h5 a, h6 a,
.content-card h2 a {
  text-decoration: none;
}
h1 a:hover, h2 a:hover, h3 a:hover, h4 a:hover, h5 a:hover, h6 a:hover,
.content-card h2 a:hover {
  text-decoration: underline;
  text-decoration-style: dotted;
}

hr {
  border: none;
  border-top: 1px solid var(--line);
}

.inner {
  width: min(calc(100% - 3rem), var(--max-width));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.header-inner,
.footer-inner,
.section-heading,
.card-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.header-inner {
  padding: 1.1rem 0;
}

.brand-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
}

.brand-logo-link {
  display: inline-flex;
}

.brand-link {
  text-decoration: none;
  font-family: var(--accent-font);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.brand-logo {
  width: 2rem;
  height: 2rem;
  object-fit: contain;
}

.card-meta,
.card-subtitle,
.panel-summary,
.fact-list dt,
.status-badge,
.page-kicker {
  color: var(--muted);
}

.site-nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.site-nav a {
  font-size: 0.95rem;
  font-family: var(--accent-font);
  text-decoration: none;
}

.site-nav a.is-active {
  text-decoration: underline;
  text-decoration-style: solid;
  text-underline-offset: 0.2em;
}

.site-main {
  padding: 3.5rem 0 4.5rem;
}

.page-intro {
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

.page-kicker {
  margin: 0;
  font-family: var(--accent-font);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-intro h1 {
  margin: 0.3rem 0 0.9rem;
  font-size: 1.5em;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.page-intro-meta {
  margin: 0 0 0.75rem;
}
.page-subtitle {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-family: var(--accent-font);
  color: var(--muted);
}
.page-lead {
  max-width: 760px;
  margin: 0;
  font-size: 1.06rem;
}

.page-body {
  padding-top: 2.25rem;
}

.section-block + .section-block {
  margin-top: 3rem;
}

.section-heading {
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.25rem;
}

.section-heading h2,
.detail-header h2,
.content-card h2,
.detail-section h3,
.info-panel h3 {
  margin: 0;
}

.section-footer {
  margin: 1.5rem 0 0;
  padding-top: 1rem;
  text-align: center;
}

.section-button {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  border: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--text);
  text-decoration: none;
}

.section-button:hover {
  border-color: var(--text);
  text-decoration: none;
}

.card-list {
  display: grid;
  gap: 1rem;
}

.event-year-heading {
  grid-column: 1 / -1;
  margin: 0;
  padding: 0.75rem 0 0.5rem;
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: bold;
  font-family: var(--accent-font);
  color: var(--text);
  text-align: center;
  letter-spacing: 0.02em;
}
.event-year-heading:first-child {
  padding-top: 0;
}

.content-card {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(200px, 280px) minmax(0, 1fr);
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.content-card:first-child {
  padding-top: 0.2rem;
}

.content-card:last-child,
.content-card:has(+ .event-year-heading) {
  border-bottom: none;
}

.card-media img,
.detail-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
  object-position: center;
  border: 1px solid var(--border);
  background: var(--surface-muted);
}

.card-copy h2 {
  font-size: 1.4rem;
  line-height: 1.3;
  margin: 0.5rem 0 ;
}

.card-meta,
.card-subtitle,
.detail-summary,
.panel-summary {
  margin: 0;
}

.card-subtitle {
  font-size: 0.95rem;
  font-family: var(--accent-font);
}

.fact-list,
.schedule-table {
  margin: 0.5rem 0 0;
}

.schedule-note-text {
  margin: 0 0 0.25rem;
}
.schedule-note-sub {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.fact-list {
  display: grid;
}

.fact-list div,
.schedule-row {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 110px minmax(0, 1fr);
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--line);
}

.fact-list div:last-child,
.schedule-row:last-child {
  border-bottom: none;
}

.schedule-row > div.schedule-note-empty {
  display: none;
}

.fact-list dd {
  margin: 0;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem 0.55rem;
  border: 1px solid var(--border);
  font-family: var(--accent-font);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.detail-layout {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr);
}

.detail-main {
  display: grid;
  gap: 1.5rem;
}

.detail-image img {
  width: 100%;
}

.detail-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.2;
}

.detail-section {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.schedule-row {
  grid-template-columns: minmax(120px, 160px) minmax(140px, 220px) minmax(0, 1fr);
}

.detail-side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.info-panel {
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
}

.venue-map-wrap {
  margin-top: 0.5rem;
  border-radius: 4px;
  overflow: hidden;
  background: var(--surface-muted);
}
.venue-map-wrap iframe {
  display: block;
  vertical-align: middle;
}

.rich-text p + p {
  margin-top: 1rem;
}

.rich-text h2 {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.rich-text h3 {
  margin-top: 2rem;
}

/* マークダウン本文内の画像（外部URL・相対パス共通） */
.rich-text img {
  border: 1px solid color-mix(in srgb, var(--border) 65%, var(--bg));
  border-radius: 3px;
  box-sizing: border-box;
}

.empty-state {
  padding: 2rem 0;
  /* border-top: 1px solid var(--line); */
}

.js-event-hidden {
  display: none !important;
}

.site-footer {
  border-top: 1px solid var(--border);
}

.footer-inner {
  flex-direction: column;
  align-items: flex-start;
  padding: 1.5rem 0 2rem;
}

.footer-copyright {
  margin: 1.25rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
  font-family: var(--accent-font);
  letter-spacing: 0.03em;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem 2rem;
}

.footer-nav-link {
  display: block;
  text-decoration: none;
}

.footer-nav-link:hover {
  text-decoration: none;
}

.footer-nav-link:hover .footer-nav-label,
.footer-nav-link:hover .footer-desc {
  color: var(--text);
}

.footer-nav-link .footer-nav-label {
  font-family: var(--accent-font);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.footer-nav-link .footer-desc {
  display: block;
  margin: 0.15em 0 0;
  font-size: 0.95rem;
  color: var(--text);
}

@media (max-width: 820px) {
  .content-card,
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .schedule-row {
    grid-template-columns: 1fr 1fr;
  }
  .schedule-row > div:nth-child(3) {
    grid-column: 1 / -1;
  }

  .card-media {
    width: 100%;
    max-width: none;
    margin-left: auto;
    margin-right: auto;
  }

  .card-media img {
    width: 100%;
    max-width: 100%;
  }

  .detail-image {
    width: 100%;
  }

  .detail-image img {
    width: 100%;
    max-width: 100%;
  }

  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .footer-nav {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .inner {
    width: min(calc(100% - 3rem), var(--max-width));
  }

  .site-main {
    padding-top: 2.25rem;
  }

  .fact-list div {
    /* grid-template-columns: 1fr; */
  }
}

/* ギャラリー：パズル風・クリックで拡大 */
.gallery {
  margin: 1.5rem 0;
  column-count: 2;
  column-gap: 0.5rem;
}
@media (min-width: 640px) {
  .gallery {
    column-count: 2;
    column-gap: 0.75rem;
  }
}
.gallery-item {
  display: block;
  break-inside: avoid;
  margin-bottom: 0.5rem;
  border-radius: 4px;
  overflow: hidden;
  background: var(--surface-muted);
}
.gallery-thumb {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  vertical-align: middle;
}
.gallery-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #fff 0%, rgba(255, 255, 255, 0.7) 100%);
  padding: 0.5rem;
  box-sizing: border-box;
}
.gallery-lightbox:target {
  display: flex;
}
.gallery-lightbox-image-link {
  position: relative;
  z-index: 1;
  display: block;
  max-height: 100%;
  min-height: 0;
}
.gallery-lightbox img {
  display: block;
  max-width: calc(100vw - 1rem);
  max-height: calc(100vh - 1rem);
  width: auto;
  height: auto;
  object-fit: contain;
}
.gallery-lightbox-backdrop {
  position: absolute;
  inset: 0;
  cursor: default;
}

/* ライトボックス用コンテナはレイアウトに参加させない */
.gallery-lightboxes {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}
.gallery-lightboxes .gallery-lightbox {
  pointer-events: auto;
}
.gallery-lightboxes .gallery-lightbox:target {
  pointer-events: auto;
}