/* 見た目の決まりは動画（agentnative-movie/src/theme.ts）と同じ。白・黒・灰で組み、色は要の所の赤だけ。
   第 1 部（前提）は暗い画面、第 2 部（CITY）は白い世界。間に「Data is CITY」 */
:root {
  --d-bg: #0c0d10; --d-fg: #eceef2; --d-sub: #8a919c; --d-line: #2a2e36; --d-card: #14171c;
  --l-bg: #f6f6f4; --l-fg: #16181c; --l-sub: #6d737c; --l-line: #d8dbe0; --l-card: #ffffff;
  --red: #e5383b;
  --font: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --mono: "IBM Plex Mono", "Zen Kaku Gothic New", monospace;
  --mark: "Avenir Next", "Avenir", "Helvetica Neue", sans-serif;
  --gut: clamp(16px, 4vw, 48px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--d-bg); color: var(--d-fg); font-family: var(--font); font-size: 17px; line-height: 2; -webkit-font-smoothing: antialiased; font-feature-settings: "palt" 1; }
a { color: inherit; }
button { font: inherit; cursor: pointer; }
.vh, .hp { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.dark { background: var(--d-bg); color: var(--d-fg); --sub: var(--d-sub); --line: var(--d-line); --card: var(--d-card); }
.light { background: var(--l-bg); color: var(--l-fg); --sub: var(--l-sub); --line: var(--l-line); --card: var(--l-card); }

/* 頭の帯 */
.site-header { position: fixed; inset: 0 0 auto; z-index: 20; display: flex; align-items: center; justify-content: space-between; padding: 14px var(--gut); pointer-events: none; mix-blend-mode: difference; color: #fff; }
.site-header > * { pointer-events: auto; }
.mark { font-family: var(--mark); font-weight: 600; letter-spacing: .08em; text-decoration: none; font-size: 17px; }

/* 頭：動画 */
.hero { position: relative; min-height: 100svh; display: grid; align-items: end; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .45; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(12, 13, 16, .96) 0%, rgba(12, 13, 16, .72) 50%, rgba(12, 13, 16, .3) 100%); }
.hero-in { z-index: 1; position: relative; padding: 0 var(--gut) clamp(72px, 12vh, 140px); max-width: 1100px; }
.hero-in { max-width: 1280px; }
/* 頭は「Data is CITY」を大きく（がく 2026-10-22「hero に Data is CITY が目立つように」）。映像はその最初の一本として下に置く */
.hero-mark { font-family: var(--mark); font-weight: 600; letter-spacing: .06em; font-size: clamp(40px, 12vw, 176px); line-height: 1; margin: 0; white-space: nowrap; }
.hero-lead { font-size: clamp(18px, 2.4vw, 30px); font-weight: 700; line-height: 1.6; margin: .8em 0 1.6em; word-break: keep-all; overflow-wrap: anywhere; }
.hero-film { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px; }
.hero-film p { margin: 0; font-weight: 700; font-size: 16px; line-height: 1.6; }
.hero-film .kicker { display: block; color: var(--d-sub); font-size: 12px; font-weight: 400; }
.hero-film small { display: block; color: var(--d-sub); font-size: 12px; font-weight: 400; }
.kicker { font-family: var(--mono); font-size: 13px; letter-spacing: .06em; color: var(--sub, var(--d-sub)); margin: 0; }
.hero .kicker { color: var(--d-sub); }
.play-at.big { display: inline-flex; align-items: baseline; gap: 12px; padding: 14px 26px; border-radius: 999px; font-weight: 700; letter-spacing: .06em; border: 1px solid #fff; }
.play-at.big { background: #fff; color: #0c0d10; }
.play-at span { font-family: var(--mono); font-weight: 400; font-size: 12px; opacity: .7; }
.scroll-cue { z-index: 1; position: absolute; right: var(--gut); bottom: 28px; font-size: 13px; color: var(--d-sub); text-decoration: none; }

/* 章：画（字幕なしの場面の映像）→ 見出し → 語り */
.ch { padding: clamp(72px, 12vh, 140px) 0 clamp(56px, 9vh, 110px); }
.shot { margin: 0 auto; max-width: 1280px; padding: 0 var(--gut); }
.shot video, .shot img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; background: var(--card); border-radius: 4px; }
.text { max-width: 720px; margin: 0 auto; padding: clamp(36px, 6vh, 64px) var(--gut) 0; }
.text .kicker { display: flex; gap: 14px; align-items: baseline; }
.text .kicker .no { color: var(--red); font-weight: 500; }
.ch h2 { font-size: clamp(24px, 3.2vw, 34px); line-height: 1.55; margin: .5em 0 1em; font-weight: 700; }
.ch p { margin: 0 0 1.2em; }
.watch { margin-top: 2em !important; }
.play-at:not(.big) { background: none; border: 0; padding: 0; color: var(--sub); font-size: 14px; display: inline-flex; gap: 10px; align-items: baseline; border-bottom: 1px solid var(--line); padding-bottom: 2px; }
.play-at:not(.big):hover { color: inherit; }
.src { margin-top: 1.4em; font-size: 13px; line-height: 1.7; color: var(--sub); border-top: 1px solid var(--line); padding-top: 12px; }
.src summary { cursor: pointer; list-style: none; font-family: var(--mono); letter-spacing: .04em; }
.src summary::-webkit-details-marker { display: none; }
.src summary::before { content: "+ "; }
.src[open] summary::before { content: "− "; }
.src ol { margin: 12px 0 0; padding-left: 1.4em; }
.src li { margin-bottom: 10px; }
.src .claim { display: block; color: inherit; }
.src a { color: inherit; text-decoration-color: var(--line); text-underline-offset: 3px; }
.src .meta { margin-left: .6em; font-family: var(--mono); font-size: 12px; }
.dark .src .claim { color: var(--d-fg); opacity: .8; }
.light .src .claim { color: var(--l-fg); opacity: .8; }

/* 間：暗い前提から白い世界へ */
.interlude { min-height: 100svh; display: grid; place-items: center; background: var(--l-bg); color: var(--l-fg); }
.mark-big { font-family: var(--mark); font-weight: 600; letter-spacing: .08em; font-size: clamp(44px, 9vw, 128px); margin: 0; }

/* 最後の章は問いで終わるので大きく */
#ch13 h2 { font-size: clamp(28px, 4vw, 44px); }

/* Data is CITY PROJECT（文章は平野さん 2026-10-22）と、その終わりのウェイティングリスト */
.project { padding: clamp(80px, 12vh, 140px) var(--gut) clamp(64px, 10vh, 110px); border-top: 1px solid var(--l-line); }
.project-in { max-width: 1080px; margin: 0 auto; }
.project-mark { font-family: var(--mark); font-weight: 600; letter-spacing: .08em; font-size: clamp(30px, 4vw, 48px); margin: 0; line-height: 1.2; }
.project-mark span { color: var(--l-sub); font-weight: 500; }
.project h2 { font-size: clamp(22px, 2.8vw, 32px); line-height: 1.6; margin: .8em 0 .6em; }
.project-lead { max-width: 760px; margin: 0; }
.pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 44px; }
.pillar { background: var(--l-card); border: 1px solid var(--l-line); border-radius: 14px; padding: 28px 30px 12px; font-size: 15px; line-height: 1.9; color: var(--l-sub); }
.pillar-no { font-family: var(--mono); color: var(--red); margin: 0; font-size: 14px; }
.pillar h3 { font-family: var(--mark); font-weight: 600; letter-spacing: .05em; font-size: 28px; color: var(--l-fg); margin: 2px 0 14px; line-height: 1.3; }
.pillar h3 span { display: block; font-family: var(--font); letter-spacing: 0; font-size: 15px; font-weight: 700; margin-top: 6px; }
.pillar p { margin: 0 0 14px; }
.pillar p:last-child { color: var(--l-fg); }
/* ウェイティングリスト：白が続いた後に黒い区画で締める（がく 2026-10-22「白が続いてるから黒ベースでも」） */
.join { padding: clamp(88px, 14vh, 150px) var(--gut) clamp(80px, 12vh, 130px); }
.join-in { max-width: 760px; margin: 0 auto; text-align: center; }
.join .kicker { color: var(--d-sub); letter-spacing: .14em; text-transform: uppercase; }
.join h2 { font-size: clamp(26px, 3.6vw, 40px); line-height: 1.55; margin: .6em 0 .7em; font-weight: 700; }
.join-lead { margin: 0 auto; max-width: 600px; font-size: 15px; line-height: 2; color: var(--d-sub); }
.wl { display: grid; grid-template-columns: 1fr auto; gap: 10px; max-width: 520px; margin: 40px auto 0; }
/* 入力欄は白地に黒い文字（黒い区画の中で、どこに入れるかがひと目で分かるように。がく 2026-10-23「スマホで入力欄が黒くて見えづらい」） */
.wl input { font: inherit; font-size: 16px; padding: 14px 20px; border: 1px solid #fff; border-radius: 999px; background: #fff; color: var(--l-fg); min-width: 0; }
.wl input::placeholder { color: var(--l-sub); }
.wl input:focus { outline: 3px solid rgba(255, 255, 255, .45); outline-offset: 2px; }
.wl button { padding: 14px 28px; border: 0; border-radius: 999px; background: var(--red); color: #fff; font-weight: 700; letter-spacing: .08em; font-size: 15px; white-space: nowrap; }
.wl button[disabled] { opacity: .5; cursor: default; }
.wl .ts, .wl-msg { grid-column: 1 / -1; }
.wl-msg { margin: 6px 0 0; font-size: 15px; font-weight: 700; }
.wl-msg:empty { display: none; }
.wl-note { margin: 18px 0 0; font-size: 12px; color: var(--d-sub); line-height: 1.7; }
.wl-note a { color: inherit; }
/* 登録できたら、フォームの代わりに出す。チェックの印が描かれ、入れたアドレスを見せる */
.wl-done { max-width: 520px; margin: 40px auto 0; padding: 36px 28px 30px; border: 1px solid var(--d-line); border-radius: 20px; background: var(--d-card); outline: none; animation: wl-pop .5s cubic-bezier(.2, .9, .3, 1.2) both; }
.wl-done[hidden], .wl[hidden] { display: none; } /* .wl の display: grid が hidden に勝つので、明示して消す */
.wl-check { width: 64px; height: 64px; display: block; margin: 0 auto 14px; fill: none; stroke: var(--d-fg); stroke-width: 3.5; stroke-linecap: round; stroke-linejoin: round; }
.wl-check circle { stroke: var(--d-line); }
.wl-check path { stroke-dasharray: 48; stroke-dashoffset: 48; animation: wl-draw .45s .25s ease-out forwards; }
.wl-done-title { margin: 0; font-size: clamp(24px, 3vw, 30px); font-weight: 700; color: var(--d-fg); }
.wl-done-addr { margin: 10px 0 0; font-size: 16px; color: var(--d-fg); overflow-wrap: anywhere; }
.wl-done-addr .wl-addr { font-family: var(--mono); font-weight: 500; }
.wl-done-note { margin: 14px 0 0; font-size: 13px; line-height: 1.9; color: var(--d-sub); }
@keyframes wl-pop { from { opacity: 0; transform: translateY(10px) scale(.97); } to { opacity: 1; transform: none; } }
@keyframes wl-draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) { .wl-done { animation: none; } .wl-check path { animation: none; stroke-dashoffset: 0; } }

/* いつでも登録に飛べるボタン（右下）。頭と、登録の区画が見えている間は隠す（main.js） */
.float-join { position: fixed; right: var(--gut); bottom: 20px; z-index: 15; padding: 10px 18px; border-radius: 999px; background: var(--red); color: #fff; font-size: 13px; font-weight: 700; letter-spacing: .04em; text-decoration: none; box-shadow: 0 4px 18px rgba(0, 0, 0, .18); transition: opacity .3s, transform .3s; }
.float-join.off { opacity: 0; transform: translateY(12px); pointer-events: none; }

.site-footer { background: var(--d-bg); color: var(--d-sub); padding: 40px var(--gut) 56px; font-size: 13px; line-height: 1.9; border-top: 1px solid var(--d-line); }
.site-footer p { margin: 0; }
.site-footer .mark { color: var(--d-fg); margin-bottom: 8px; display: block; }
.site-footer a { margin-right: 1em; }

/* 音つきで見る：全画面の映像 */
.player { width: min(1280px, 100vw); max-width: 100vw; max-height: 100vh; padding: 0; border: 0; background: #000; overflow: visible; }
.player::backdrop { background: rgba(0, 0, 0, .92); }
.player video { display: block; width: 100%; max-height: 92vh; background: #000; }
.player .close { position: absolute; top: -44px; right: 0; width: 40px; height: 40px; border: 0; background: none; color: #fff; font-size: 28px; line-height: 1; }

@media (max-width: 640px) {
  body { font-size: 16px; line-height: 1.95; }
  .wl { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .float-join { bottom: 14px; font-size: 12px; }
  .shot { padding: 0; }
  .shot video, .shot img { border-radius: 0; }
  .player .close { top: 8px; right: 8px; z-index: 2; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }