/* ============================================================
   MV LOCATION ARCHIVE — dark editorial theme
   ダーク基調 / グリッド線・等高線モチーフ / データ部は等幅フォント
   来日サイト（rainichi-site）と共有できるよう汎用クラスで設計。
   モバイルファースト。外部フォントが読めなくてもシステムフォントで崩れない。
   ============================================================ */

:root {
  color-scheme: dark;
  --bg: #0b0c0e;
  --bg-raise: #121317;
  --bg-frame: #0e0f12;
  --ink: #ece9e2;
  --ink-dim: #a49f93;
  --ink-faint: #6e6a60;
  --line: rgba(236, 233, 226, 0.16);
  --line-strong: rgba(236, 233, 226, 0.38);
  --accent: #ff4b1e;        /* マーカーオレンジ */
  --accent-ink: #14100d;
  --amber: #ffb340;         /* ファン特定バッジ用 */
  --font-display: "Archivo", "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Noto Sans JP", sans-serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Hiragino Sans",
    "Noto Sans JP", sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", Menlo, Consolas, monospace;
  --pad: clamp(18px, 5vw, 40px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

/* 紙面全体にうっすらグリッド線 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(236, 233, 226, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(236, 233, 226, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  z-index: 0;
}

main, .site-header, .site-footer { position: relative; z-index: 1; }

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--pad) 72px;
}

a { color: var(--ink); text-decoration-color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent); }

/* ---------- ヘッダー / フッター ---------- */

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px var(--pad) 14px;
  border-bottom: 1px solid var(--line);
}

.site-brand { text-decoration: none; display: flex; flex-direction: column; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  line-height: 1.3;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--accent);
}
.header-coord {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  white-space: nowrap;
}

.site-footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px var(--pad) 44px;
  border-top: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 0.82rem;
}
.footer-brand {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  color: var(--ink-faint);
  margin: 0 0 10px;
}
.site-footer p { margin: 0; max-width: 46em; }

/* ---------- トップ: ヒーロー ---------- */

.hero {
  padding: clamp(40px, 9vw, 88px) 0 40px;
  border-bottom: 2px solid var(--ink);
  position: relative;
  overflow: hidden;
}
/* 等高線モチーフ（同心円） */
.hero::after {
  content: "";
  position: absolute;
  right: -140px;
  top: -180px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: repeating-radial-gradient(
    circle, transparent 0 26px, rgba(236, 233, 226, 0.07) 26px 27px);
  pointer-events: none;
}
.hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.26em;
  color: var(--accent);
  margin: 0 0 18px;
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 9.5vw, 4.8rem);
  line-height: 1.12;
  letter-spacing: 0.01em;
  margin: 0 0 20px;
}
.lead {
  color: var(--ink-dim);
  font-size: clamp(0.95rem, 2.6vw, 1.08rem);
  max-width: 38em;
  margin: 0 0 34px;
}
.hero-stats {
  display: flex;
  gap: clamp(24px, 7vw, 64px);
  margin: 0;
}
.hero-stats div { border-top: 1px solid var(--line-strong); padding-top: 8px; }
.hero-stats dt {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  color: var(--ink-faint);
}
.hero-stats dd {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 6vw, 2.9rem);
  line-height: 1.1;
  margin: 2px 0 0;
}

/* ---------- トップ: アーティスト目次 ---------- */

.artist-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  padding: 18px 0 4px;
  font-family: var(--font-display);
  font-weight: 700;
}
.artist-nav a { text-decoration: none; font-size: 0.95rem; }
.artist-nav .nav-no {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.68rem;
  color: var(--accent);
  margin-right: 7px;
  letter-spacing: 0.1em;
}

.artist-section { margin-top: clamp(44px, 8vw, 72px); }
.artist-heading {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 5.4vw, 2.5rem);
  line-height: 1.2;
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.artist-no {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.artist-count {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--ink-faint);
  margin-left: auto;
}

/* ---------- トップ: 記事カード ---------- */

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 720px) {
  .card-grid { grid-template-columns: 1fr 1fr; }
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 20px 18px;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
.card:hover, .card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--accent);
  background: #17181d;
  color: var(--ink);
}
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.card-year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
}
.card-song {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 4.6vw, 1.9rem);
  line-height: 1.25;
}
.card-places { color: var(--ink-dim); font-size: 0.9rem; line-height: 1.6; }
.card-arrow {
  position: absolute;
  right: 16px;
  bottom: 10px;
  font-family: var(--font-mono);
  color: var(--accent);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.card:hover .card-arrow, .card:focus-visible .card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ---------- 確度バッジ ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 3px 9px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  white-space: nowrap;
  vertical-align: middle;
}
.badge-dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; flex: none; }
.badge--official { color: #35d99a; border-color: rgba(53, 217, 154, 0.55); }
.badge--wiki { color: var(--ink-dim); }
.badge--fan {
  color: var(--amber);
  border-color: rgba(255, 179, 64, 0.6);
  border-style: dashed;
}

/* ---------- 記事ページ ---------- */

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  margin: 26px 0 0;
}
.breadcrumb a { color: var(--ink-dim); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.crumb-sep { margin: 0 8px; color: var(--accent); }

.article-hero {
  padding: 22px 0 30px;
  border-bottom: 2px solid var(--ink);
  position: relative;
  overflow: hidden;
}
.article-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -220px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: repeating-radial-gradient(
    circle, transparent 0 22px, rgba(236, 233, 226, 0.06) 22px 23px);
  pointer-events: none;
}
.hero-artist {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin: 0 0 10px;
  text-transform: uppercase;
}
.article-song {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 10vw, 4.4rem);
  line-height: 1.15;
  margin: 0 0 14px;
}
.article-title {
  font-size: clamp(0.98rem, 3vw, 1.15rem);
  font-weight: 700;
  color: var(--ink-dim);
  margin: 0 0 22px;
  max-width: 40em;
}
.meta-row { display: flex; flex-wrap: wrap; gap: 10px 28px; align-items: center; }
.meta-item { font-family: var(--font-mono); font-size: 0.85rem; display: inline-flex; gap: 9px; align-items: center; }
.meta-label {
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  border: 1px solid var(--line);
  padding: 2px 6px;
}

.sec-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.25rem, 4.4vw, 1.7rem);
  margin: clamp(40px, 7vw, 60px) 0 18px;
}
.sec-no {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

/* スペック表（MV基本情報・根拠） */
.spec-list { margin: 0; border-top: 1px solid var(--line); }
.spec-list > div {
  display: grid;
  grid-template-columns: 7.5em 1fr;
  gap: 6px 14px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line);
}
.spec-list dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
  padding-top: 4px;
}
.spec-list dd { margin: 0; overflow-wrap: anywhere; }
.unannounced { color: var(--ink-faint); font-size: 0.9rem; }

.notes {
  margin-top: 16px;
  border-left: 3px solid var(--accent);
  background: var(--bg-raise);
  padding: 12px 16px;
  font-size: 0.88rem;
  color: var(--ink-dim);
}
.notes h3 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  margin: 0 0 6px;
  color: var(--ink);
}
.notes ul { margin: 0; padding-left: 1.2em; }

/* ---------- ロケ地エントリー ---------- */

.location-list { display: flex; flex-direction: column; gap: clamp(36px, 6vw, 56px); }
.loc { border-top: 1px solid var(--line-strong); padding-top: 18px; }
.loc-head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px 14px; margin-bottom: 16px; }
.loc-no {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--accent);
}
.loc-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 5.6vw, 2.2rem);
  line-height: 1.25;
  margin: 0;
}
.loc-area {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  padding: 2px 8px;
}
.loc-notes { color: var(--ink-dim); font-size: 0.9rem; padding-left: 1.3em; margin: 14px 0 0; }
.loc-spec { margin-top: 14px; font-size: 0.92rem; }
.loc-spec a { color: var(--accent); }

/* ---------- 比較パネル（映像側 × 現地側） ---------- */

.compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 720px) {
  .compare { grid-template-columns: 1fr 1fr; }
}

.frame { margin: 0; }
.frame-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 7px;
}
.frame-tag {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.frame--mv .frame-tag { color: var(--accent); }
.frame-title {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
}
.frame-body {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-frame);
  border: 1px solid var(--line-strong);
  overflow: hidden;
}
/* 枠の四隅マーカー */
.frame-body::before,
.frame-body::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  z-index: 2;
  pointer-events: none;
}
.frame-body::before {
  left: 7px; top: 7px;
  border-left: 2px solid var(--accent);
  border-top: 2px solid var(--accent);
}
.frame-body::after {
  right: 7px; bottom: 7px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
}
.frame-body iframe,
.frame-body img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  object-fit: cover;
  display: block;
}
.frame-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  padding: 12px;
  background:
    linear-gradient(rgba(236, 233, 226, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(236, 233, 226, 0.05) 1px, transparent 1px),
    repeating-radial-gradient(circle at 78% 18%, transparent 0 30px, rgba(236, 233, 226, 0.05) 30px 31px);
  background-size: 36px 36px, 36px 36px, 100% 100%;
}
.frame-signal {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.2rem, 4.5vw, 1.6rem);
  letter-spacing: 0.14em;
  color: var(--ink-faint);
}
.frame-note { font-size: 0.74rem; color: var(--ink-faint); letter-spacing: 0.05em; }
.frame-status {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  margin-top: 7px;
}
.frame-credit {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  margin: 0;
  padding: 14px 10px 6px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.72));
  z-index: 1;
}

/* ---------- 訪問時の注意 ---------- */

.visit ul { padding-left: 1.3em; color: var(--ink-dim); margin: 0; }
.visit li { margin-bottom: 6px; }

/* ---------- スクロール演出（JS有効時のみ初期非表示） ---------- */

.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .card { transition: none; }
  .card:hover { transform: none; }
}

/* ---- 固定ページ（プライバシーポリシー／運営者情報／お問い合わせ） ---- */
.static-body section { margin-bottom: 2.4em; }
.static-body p { max-width: 46em; }
.plain-list { max-width: 46em; padding-left: 1.4em; }
.plain-list li { margin-bottom: 0.4em; }
.placeholder-note {
  display: inline-block;
  border: 1px dashed var(--amber);
  color: var(--amber);
  padding: 0.15em 0.6em;
  font-family: var(--font-mono);
  font-size: 0.85em;
}
.footer-nav {
  margin-top: 1.2em;
  display: flex;
  gap: 1.6em;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.85em;
}
.footer-nav a { color: var(--ink-dim); }