/*
Theme Name: Newsoku Shinkansen
Description: ニュー速新幹線 — 5chまとめ専用テーマ。定時運行・深緑ブランド。
Version: 1.0.0
Author: ニュー速新幹線編集部
Text Domain: newsoku
*/

:root {
  --nsk-primary: #0B5C3E;
  --nsk-accent: #18A05E;
  --nsk-bg: #FFFFFF;
  --nsk-surface: #F7F8F7;
  --nsk-text: #222222;
  --nsk-muted: #6B7280;
  --nsk-border: #E2E6E4;
  --nsk-link: #0B5C3E;
  --nsk-name: #008800;
  --nsk-op-text: #0033CC;
  --nsk-op-bg: #F2F2F2;
  --nsk-em: #D80000;
  --nsk-ad-bg: #F7F7F7;
  --nsk-ad-border: #DDDDDD;
  --nsk-card-shadow: 0 1px 3px rgba(0,0,0,.08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --nsk-bg: #15181A;
    --nsk-surface: #1E2326;
    --nsk-text: #E6E3DC;
    --nsk-muted: #9AA3A0;
    --nsk-border: #2C3236;
    --nsk-link: #2EBD7F;
    --nsk-primary: #0B5C3E;
    --nsk-accent: #2EBD7F;
    --nsk-name: #4CC24C;
    --nsk-op-text: #7FA8FF;
    --nsk-op-bg: #232A33;
    --nsk-em: #FF5C5C;
    --nsk-ad-bg: #1E2326;
    --nsk-ad-border: #333333;
    --nsk-card-shadow: 0 1px 3px rgba(0,0,0,.4);
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  background: var(--nsk-bg);
  color: var(--nsk-text);
  line-height: 1.8;
  font-size: 16px;
}
a { color: var(--nsk-link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

/* ── ヘッダー ── */
.nsk-header { background: var(--nsk-primary); color: #fff; }
.nsk-header-in { max-width: 1080px; margin: 0 auto; padding: 14px 16px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.nsk-logo { font-size: 22px; font-weight: 800; color: #fff; letter-spacing: .02em; }
.nsk-logo-wrap { display: contents; margin: 0; font-size: inherit; font-weight: inherit; }
.nsk-logo:hover { text-decoration: none; }
.nsk-logo .nsk-logo-mark { margin-right: 6px; }
.nsk-tagline { font-size: 11px; opacity: .85; }
.nsk-nav { background: #094A32; }
.nsk-nav-in { max-width: 1080px; margin: 0 auto; padding: 0 8px; display: flex; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
.nsk-nav a { color: #fff; padding: 9px 13px; font-size: 13.5px; font-weight: 600; flex-shrink: 0; }
.nsk-nav a:hover { background: var(--nsk-accent); text-decoration: none; }

/* ── レイアウト ── */
.nsk-wrap { max-width: 1080px; margin: 0 auto; padding: 20px 16px; display: grid; grid-template-columns: minmax(0,1fr) 300px; gap: 28px; }
@media (max-width: 900px) { .nsk-wrap { grid-template-columns: 1fr; } .nsk-side { order: 2; } }

/* ── 一覧カード ── */
.nsk-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .nsk-grid { grid-template-columns: 1fr; } }
.nsk-card { background: var(--nsk-surface); border: 1px solid var(--nsk-border); border-radius: 10px; overflow: hidden; box-shadow: var(--nsk-card-shadow); display: flex; flex-direction: column; }
.nsk-card a.nsk-card-link { color: var(--nsk-text); display: flex; flex-direction: column; height: 100%; }
.nsk-card a.nsk-card-link:hover { text-decoration: none; }
.nsk-card a.nsk-card-link:hover .nsk-card-t { color: var(--nsk-accent); }
.nsk-card-thumb { aspect-ratio: 1.91 / 1; background: var(--nsk-border); }
.nsk-card-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.nsk-card-body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.nsk-card-t { font-size: 16px; font-weight: 700; line-height: 1.5; margin: 0; }
.nsk-card-meta { margin-top: auto; font-size: 12px; color: var(--nsk-muted); display: flex; gap: 10px; align-items: center; }
.nsk-cat-badge { display: inline-block; background: var(--nsk-primary); color: #fff; font-size: 11px; padding: 2px 9px; border-radius: 99px; font-weight: 600; }
.nsk-card-hero { grid-column: 1 / -1; }
.nsk-card-hero .nsk-card-t { font-size: 21px; }

.nsk-pagination { margin: 26px 0; display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.nsk-pagination a, .nsk-pagination span { padding: 8px 14px; border: 1px solid var(--nsk-border); border-radius: 6px; background: var(--nsk-surface); }
.nsk-pagination .current { background: var(--nsk-primary); color: #fff; border-color: var(--nsk-primary); }
.nsk-pagination:empty { display: none; margin: 0; }

/* ── 記事ページ ── */
.nsk-article { background: var(--nsk-surface); border: 1px solid var(--nsk-border); border-radius: 10px; padding: 22px; }
@media (max-width: 640px) { .nsk-article { padding: 14px; border-radius: 0; margin: 0 -16px; border-left: 0; border-right: 0; } }
.nsk-breadcrumb { font-size: 12px; color: var(--nsk-muted); margin-bottom: 12px; }
.nsk-title { font-size: 24px; line-height: 1.45; margin: 0 0 10px; font-weight: 800; }
@media (max-width: 640px) { .nsk-title { font-size: 20px; } }
.nsk-meta { font-size: 12.5px; color: var(--nsk-muted); display: flex; gap: 12px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.nsk-eyecatch img { border-radius: 8px; display: block; width: 100%; }

.nsk-lead { font-size: 15.5px; background: var(--nsk-bg); border-left: 4px solid var(--nsk-accent); padding: 12px 14px; border-radius: 0 8px 8px 0; margin: 16px 0; }
.nsk-source { font-size: 13px; color: var(--nsk-muted); background: var(--nsk-bg); border: 1px dashed var(--nsk-border); border-radius: 8px; padding: 10px 12px; margin: 0 0 18px; }
.nsk-source-board { margin-left: 6px; }
.nsk-source-foot { font-size: 12.5px; color: var(--nsk-muted); word-break: break-all; }

/* ── レス表示(ブループリント§5確定仕様) ── */
.nsk-thread { margin: 6px 0 20px; }
.nsk-res { padding: 13px 4px; border-bottom: 1px solid var(--nsk-border); }
.nsk-res-h { font-size: 13px; color: var(--nsk-muted); margin-bottom: 4px; }
.nsk-res-n { font-weight: 700; }
.nsk-res-name { color: var(--nsk-name); font-weight: 700; }
.nsk-res-id { font-size: 12px; }
.nsk-res-b { font-size: 17px; font-weight: 700; line-height: 1.8; color: var(--nsk-text); word-wrap: break-word; }
.nsk-child { margin-left: 26px; border-left: 3px solid var(--nsk-border); padding-left: 12px; }
.nsk-depth2 { margin-left: 52px; }
@media (max-width: 640px) { .nsk-child { margin-left: 14px; } .nsk-depth2 { margin-left: 28px; } }
.nsk-op .nsk-res-b { color: var(--nsk-op-text); }
.nsk-op { background: var(--nsk-op-bg); border-radius: 8px; padding-left: 10px; padding-right: 10px; }
.nsk-op-badge { background: var(--nsk-op-text); color: #fff; font-size: 10.5px; padding: 1px 7px; border-radius: 99px; }
.nsk-em .nsk-res-b { color: var(--nsk-em); font-size: 22px; }
.nsk-anc { color: var(--nsk-accent); font-weight: 700; }
.nsk-anc-miss { color: var(--nsk-muted); font-size: .85em; }
.nsk-popup { position: absolute; z-index: 99; max-width: min(480px, 90vw); background: var(--nsk-bg); border: 1px solid var(--nsk-accent); border-radius: 8px; padding: 10px 12px; box-shadow: 0 4px 16px rgba(0,0,0,.25); font-size: 14px; }

.nsk-conductor { background: var(--nsk-bg); border: 1px solid var(--nsk-accent); border-radius: 10px; padding: 13px 16px; margin: 18px 0; }
.nsk-conductor-label { font-weight: 800; color: var(--nsk-accent); font-size: 13.5px; margin-bottom: 4px; }
.nsk-conductor p { margin: 0; font-size: 14.5px; }

/* ── 広告枠(CLS予約・後日コード挿入。dark/light両対応で白い穴を防止) ── */
.ad-zone { background: var(--nsk-ad-bg); border: 1px solid var(--nsk-ad-border); border-radius: 8px; margin: 16px 0; display: flex; align-items: center; justify-content: center; color: transparent; }
.ad-fv { min-height: 100px; }
.ad-mid { min-height: 250px; }
.ad-btm { min-height: 250px; }
.ad-item { min-height: 120px; }
.ad-side-pc { min-height: 600px; position: sticky; top: 16px; }
@media (max-width: 900px) { .ad-side-pc { display: none; } }
.ad-zone:empty { visibility: hidden; height: 0; min-height: 0; margin: 0; border: 0; }

/* ── 記事下モジュール ── */
.nsk-related { margin: 22px 0; }
.nsk-related h2 { font-size: 17px; border-left: 4px solid var(--nsk-primary); padding-left: 10px; }
.nsk-related-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
@media (max-width: 640px) { .nsk-related-grid { grid-template-columns: 1fr 1fr; } }
.nsk-related .nsk-card-t { font-size: 13.5px; }
.nsk-prevnext { display: flex; gap: 12px; margin: 18px 0; }
.nsk-prevnext a { flex: 1; background: var(--nsk-surface); border: 1px solid var(--nsk-border); border-radius: 8px; padding: 10px 12px; font-size: 13px; }
.nsk-rss-box { border: 1px solid var(--nsk-border); border-radius: 8px; padding: 12px; margin: 14px 0; min-height: 80px; font-size: 13px; color: var(--nsk-muted); }

/* ── サイドバー ── */
.nsk-side .widget { background: var(--nsk-surface); border: 1px solid var(--nsk-border); border-radius: 10px; padding: 14px 16px; margin-bottom: 18px; }
.nsk-side .widget h3 { font-size: 14.5px; margin: 0 0 10px; border-left: 4px solid var(--nsk-accent); padding-left: 9px; }
.nsk-side ul { list-style: none; margin: 0; padding: 0; }
.nsk-side li { padding: 7px 0; border-bottom: 1px dashed var(--nsk-border); font-size: 13.5px; line-height: 1.5; }
.nsk-side li:last-child { border-bottom: 0; }
.nsk-side li > a:not(.nsk-side-rank) { display: inline-block; padding: 7px 0; margin: -7px 0; }
.nsk-side-rank { display: flex; gap: 10px; align-items: flex-start; }
.nsk-side-rank img { width: 70px; aspect-ratio: 1.91/1; object-fit: cover; border-radius: 5px; flex-shrink: 0; }

/* ── 検索 ── */
.nsk-search { display: flex; gap: 6px; }
.nsk-search input[type=search] { flex: 1; padding: 8px 10px; border: 1px solid var(--nsk-border); border-radius: 6px; background: var(--nsk-bg); color: var(--nsk-text); font-size: 16px; }
.nsk-search button { background: var(--nsk-primary); color: #fff; border: 0; border-radius: 6px; padding: 8px 14px; cursor: pointer; }

/* ── フッター ── */
.nsk-footer { background: #094A32; color: #DDE8E2; margin-top: 36px; }
.nsk-footer-in { max-width: 1080px; margin: 0 auto; padding: 24px 16px; font-size: 13px; }
.nsk-footer a { color: #BCE3D0; margin-right: 10px; display: inline-block; padding: 10px 4px; }
.nsk-footer-note { margin-top: 10px; font-size: 11.5px; opacity: .8; }

.nsk-archive-head { font-size: 19px; font-weight: 800; margin: 0 0 16px; border-left: 5px solid var(--nsk-primary); padding-left: 12px; }
.screen-reader-text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }