/* 学習サイト(/learn)。生成物の見た目。色と余白は style.css の変数に合わせる */
.learn { --l-body: #d3dce8; --l-label: #a9b6c8; --l-line: rgba(255, 255, 255, 0.12); padding-bottom: 80px; }
.learn a { color: var(--accent-cyan); }
.learn .muted { color: var(--l-label); }
.learn .small { font-size: 0.86rem; }

/* ヒーロー(トップ) */
.learn-hero { padding: 64px 0 48px; text-align: left; border-bottom: 1px solid var(--l-line); background: radial-gradient(900px 340px at 15% 0%, rgba(56, 189, 248, 0.1), transparent 70%); }
.learn-hero h1 { font-size: clamp(1.9rem, 5vw, 3rem); line-height: 1.25; margin: 6px 0 14px; }
.learn-hero .lede { font-size: 1.12rem; color: var(--l-body); max-width: 46em; line-height: 1.8; }
.kicker { font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-emerald); margin: 0; }
.btn-learn { display: inline-block; margin-top: 8px; padding: 12px 24px; border-radius: var(--radius-full); background: var(--accent-cyan); color: #04121c !important; font-weight: 700; text-decoration: none; }
.btn-learn:hover { filter: brightness(1.1); }
.stats { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; padding: 0; margin: 36px 0 0; }
.stats li { border: 1px solid var(--l-line); border-radius: var(--radius-md); padding: 14px 16px; background: var(--bg-card); }
.stats strong { display: block; font-size: 1.7rem; color: var(--text-primary); font-family: var(--font-mono); }
.stats span { font-size: 0.86rem; color: var(--l-label); }

.learn-wrap { padding-top: 32px; }
.learn-wrap > section { margin-top: 56px; scroll-margin-top: 90px; }
.learn h2 { font-size: 1.55rem; color: var(--accent-cyan); margin: 40px 0 12px; scroll-margin-top: 90px; }
.learn h3 { font-size: 1.15rem; color: var(--text-primary); margin: 22px 0 8px; }
.learn p, .learn li { color: var(--l-body); line-height: 1.85; }
.learn .anchor { margin-right: 8px; font-weight: 400; text-decoration: none; opacity: 0; font-family: var(--font-mono); }
.learn h2:hover .anchor, .learn h2:focus-within .anchor { opacity: 0.6; }

/* トラックとカード */
.track { margin-top: 34px; }
.track h3 { font-size: 1.3rem; margin-bottom: 2px; }
.track-aud { font-size: 0.9rem; color: var(--accent-emerald) !important; margin: 0 0 6px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin-top: 14px; }
.card { position: relative; display: block; padding: 18px 18px 16px; border: 1px solid var(--l-line); border-radius: var(--radius-md); background: var(--bg-card); text-decoration: none; transition: border-color var(--transition-fast), background var(--transition-fast); }
.card h3 { margin: 4px 0 6px; font-size: 1.05rem; color: var(--text-primary); line-height: 1.5; }
.card p { margin: 0 0 10px; font-size: 0.92rem; line-height: 1.7; color: var(--l-body); }
.card-published:hover { border-color: var(--border-accent); background: var(--bg-card-hover); }
.card-planned { opacity: 0.62; }
.card-num { font-family: var(--font-mono); font-size: 0.78rem; color: var(--l-label); }
.card-meta { display: flex; flex-wrap: wrap; gap: 6px 10px; font-size: 0.8rem !important; color: var(--l-label) !important; }
.card-meta span { color: var(--l-label); }
.badge { display: inline-block; padding: 1px 9px; border-radius: 6px; font-weight: 700; font-size: 0.78rem; border: 1px solid var(--l-line); }
.badge-published { color: #6ee7b7 !important; border-color: rgba(16, 185, 129, 0.45); background: rgba(16, 185, 129, 0.1); }
.badge-planned { color: var(--l-label) !important; }
.card.is-done::after { content: "✓"; position: absolute; top: 12px; right: 14px; color: #6ee7b7; font-weight: 800; }

/* 網羅率 */
.coverage { list-style: none; padding: 0; margin: 14px 0; display: grid; gap: 8px; }
.coverage li { display: grid; grid-template-columns: minmax(8em, 15em) 1fr minmax(7em, 11em); gap: 12px; align-items: center; }
.coverage progress { width: 100%; height: 10px; border: 0; border-radius: 99px; background: rgba(148, 163, 184, 0.2); overflow: hidden; }
.coverage progress::-webkit-progress-bar { background: rgba(148, 163, 184, 0.2); }
.coverage progress::-webkit-progress-value { background: var(--accent-emerald); border-radius: 99px; }
.coverage progress::-moz-progress-bar { background: var(--accent-emerald); }
.cov-n { font-size: 0.86rem; color: var(--l-label); text-align: right; font-family: var(--font-mono); }

/* 学び方 */
.steps { list-style: none; padding: 0; margin: 14px 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.steps li { display: flex; gap: 12px; padding: 14px; border: 1px solid var(--l-line); border-radius: var(--radius-md); background: var(--bg-card); }
.steps p { margin: 4px 0 0; font-size: 0.92rem; line-height: 1.7; }
.step-n { flex: none; width: 28px; height: 28px; border-radius: 50%; background: rgba(56, 189, 248, 0.16); color: var(--accent-cyan); font-weight: 800; display: grid; place-items: center; font-family: var(--font-mono); }

/* パンくず・モジュールの頭 */
.crumbs { font-size: 0.86rem; color: var(--l-label); padding-top: 84px; }
.crumbs a { text-decoration: none; }
.learn-head { margin: 14px 0 6px; padding-bottom: 20px; border-bottom: 1px solid var(--l-line); }
.learn-head h1 { font-size: clamp(1.6rem, 4vw, 2.3rem); line-height: 1.3; margin: 4px 0 10px; }
.learn-head .lede { font-size: 1.05rem; max-width: 46em; }
.meta { list-style: none; display: flex; flex-wrap: wrap; gap: 6px 18px; padding: 0; margin: 10px 0 0; font-size: 0.88rem; color: var(--l-label); }
.meta li { color: var(--l-label); }

/* 本文の2カラム */
.learn-layout { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 36px; margin-top: 24px; }
.learn-toc { position: sticky; top: 84px; align-self: start; font-size: 0.9rem; max-height: calc(100vh - 110px); overflow: auto; }
.toc-title { font-family: var(--font-mono); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--l-label) !important; margin: 0 0 8px; }
.learn-toc ol { list-style: none; padding: 0; margin: 0 0 16px; border-left: 1px solid var(--l-line); }
.learn-toc li { margin: 0; line-height: 1.5; }
.learn-toc li a { display: block; padding: 5px 0 5px 12px; text-decoration: none; color: var(--l-body); border-left: 2px solid transparent; margin-left: -1px; }
.learn-toc li a:hover, .learn-toc li a.is-current { color: var(--accent-cyan); border-left-color: var(--accent-cyan); }
.done-btn { width: 100%; padding: 9px 12px; border-radius: var(--radius-sm); border: 1px solid var(--border-accent); background: transparent; color: var(--accent-cyan); font: inherit; font-weight: 700; cursor: pointer; }
.done-btn:hover { background: rgba(56, 189, 248, 0.12); }
.done-btn.is-done { color: #6ee7b7; border-color: rgba(16, 185, 129, 0.5); background: rgba(16, 185, 129, 0.1); }
.learn-body { min-width: 0; }
.learn-body > :first-child { margin-top: 0; }
.learn-body h2:first-child { margin-top: 0; }
.learn-body ul, .learn-body ol { padding-left: 1.4em; }
.learn-body li { margin: 4px 0; }
.learn-body hr { border: 0; border-top: 1px solid var(--l-line); margin: 28px 0; }
.learn-body blockquote { margin: 16px 0; padding: 2px 16px; border-left: 3px solid var(--accent-purple); background: rgba(129, 140, 248, 0.07); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.learn-body code { font-family: var(--font-mono); font-size: 0.88em; padding: 1px 6px; border-radius: 5px; background: rgba(148, 163, 184, 0.16); color: #e6edf6; overflow-wrap: anywhere; }
.table-wrap { overflow-x: auto; border: 1px solid var(--l-line); border-radius: var(--radius-sm); margin: 16px 0; }
.learn-body table { border-collapse: collapse; width: 100%; font-size: 0.93rem; }
.learn-body th { text-align: left; padding: 10px 12px; color: var(--l-label); border-bottom: 1px solid var(--l-line); white-space: nowrap; }
.learn-body td { padding: 10px 12px; border-bottom: 1px solid var(--l-line); vertical-align: top; }
.learn-body tr:last-child td { border-bottom: 0; }

/* コード */
figure.code { position: relative; margin: 14px 0; border: 1px solid var(--l-line); border-radius: var(--radius-sm); background: #060a14; }
figure.code figcaption { padding: 6px 12px; font-family: var(--font-mono); font-size: 0.78rem; color: var(--l-label); border-bottom: 1px solid var(--l-line); }
figure.code pre { margin: 0; padding: 14px; overflow-x: auto; }
figure.code pre code { display: block; padding: 0; background: none; font-size: 0.86rem; line-height: 1.65; white-space: pre; color: #dbe6f3; overflow-wrap: normal; }
figure.code-output { border-style: dashed; }
figure.code-output pre code { color: #b6c4d6; }
.copy { position: absolute; top: 5px; right: 6px; padding: 3px 10px; font: 600 0.74rem var(--font-main); border-radius: 6px; border: 1px solid var(--l-line); background: rgba(255, 255, 255, 0.06); color: var(--l-body); cursor: pointer; }
.copy:hover { background: rgba(255, 255, 255, 0.14); }

/* ブロック */
.blk { margin: 18px 0; padding: 14px 18px; border: 1px solid var(--l-line); border-left-width: 4px; border-radius: var(--radius-sm); background: var(--bg-card); }
.blk > :last-child { margin-bottom: 0; }
.blk-title { font-weight: 800; font-size: 0.92rem; margin-bottom: 6px; color: var(--text-primary); }
.blk p { margin: 6px 0; }
.blk-note { border-left-color: var(--accent-cyan); }
.blk-tip { border-left-color: var(--accent-emerald); }
.blk-warn, .blk-limits { border-left-color: var(--accent-amber); }
.blk-danger, .blk-avoid { border-left-color: var(--accent-red); background: rgba(239, 68, 68, 0.06); }
.blk-danger .blk-title, .blk-avoid .blk-title { color: #fca5a5; }
.blk-lab { border-left-color: var(--accent-emerald); background: rgba(16, 185, 129, 0.06); }
.blk-lab .blk-title { color: #6ee7b7; }
.blk-scenario { border-left-color: var(--accent-purple); background: rgba(129, 140, 248, 0.07); }
.blk-decision { border-left-color: var(--accent-amber); background: rgba(245, 158, 11, 0.07); }
.blk-verified { border-left-color: var(--accent-emerald); margin-top: 36px; }
.blk-covers { margin-top: 36px; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0 !important; margin: 6px 0; }
.chips li { margin: 0; }
a.feat { display: inline-block; padding: 1px 10px; border-radius: 6px; border: 1px solid var(--border-accent); text-decoration: none; background: rgba(56, 189, 248, 0.07); }
a.feat:hover { background: rgba(56, 189, 248, 0.18); }
a.attack { font-family: var(--font-mono); font-size: 0.82rem; padding: 0 6px; border-radius: 5px; border: 1px solid var(--l-line); text-decoration: none; }
.attack-row { font-size: 0.9rem; }

/* 確認問題 */
.blk-quiz { border-left-color: var(--accent-purple); }
.blk-quiz .q { font-weight: 700; color: var(--text-primary); }
.opts { list-style: none; padding: 0 !important; display: grid; gap: 8px; margin: 10px 0; }
.opts li { margin: 0; }
.opts button { width: 100%; text-align: left; padding: 10px 14px; border-radius: var(--radius-sm); border: 1px solid var(--l-line); background: rgba(255, 255, 255, 0.04); color: var(--l-body); font: inherit; cursor: pointer; line-height: 1.6; }
.opts button:hover:not(:disabled) { border-color: var(--border-accent); }
.opts button.is-right { border-color: rgba(16, 185, 129, 0.7); background: rgba(16, 185, 129, 0.14); color: #d1fae5; }
.opts button.is-wrong { border-color: rgba(239, 68, 68, 0.7); background: rgba(239, 68, 68, 0.12); }
.verdict { font-weight: 800; min-height: 1.4em; }
.blk-quiz details { margin-top: 6px; }
.blk-quiz summary { cursor: pointer; color: var(--accent-cyan); }

/* 前後 */
.learn-pager { display: grid; grid-template-columns: 1fr auto 1fr; gap: 14px; align-items: stretch; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--l-line); }
.learn-pager a { display: block; padding: 12px 16px; border: 1px solid var(--l-line); border-radius: var(--radius-md); text-decoration: none; background: var(--bg-card); }
.learn-pager a:hover { border-color: var(--border-accent); }
.learn-pager a span { display: block; font-size: 0.78rem; color: var(--l-label); }
.learn-pager .next { text-align: right; }
.learn-pager .back { align-self: center; border: 0; background: none; }

@media (max-width: 860px) {
  .learn-layout { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .learn-toc { position: static; max-height: none; }
  .learn-toc ol { border-left: 0; display: flex; flex-wrap: wrap; gap: 4px 14px; }
  .learn-toc li a { padding: 2px 0; border-left: 0; margin-left: 0; }
  .coverage li { grid-template-columns: 1fr; gap: 4px; }
  .cov-n { text-align: left; }
  .learn-pager { grid-template-columns: 1fr; }
  .learn-pager .next { text-align: left; }
  .learn-hero { padding-top: 32px; padding-bottom: 36px; }
}

/* シミュレーション(:::sim)。JS が動かないときは、全部の段と結果をそのまま読める */
.blk-sim { border-left-color: var(--accent-purple); padding: 18px 20px; }
.sim-steps { list-style: none; padding: 0 !important; margin: 14px 0; display: grid; gap: 16px; }
.sim-step { margin: 0; padding: 14px 16px; border: 1px solid var(--l-line); border-radius: var(--radius-sm); background: rgba(255, 255, 255, 0.03); }
.sim-time { display: flex; justify-content: space-between; gap: 12px; font-family: var(--font-mono); font-size: 0.82rem; color: var(--accent-amber); }
.sim-n { color: var(--l-label); }
.sim-step h4 { margin: 6px 0 8px; font-size: 1.05rem; color: var(--text-primary); }
.sim-situation > :first-child { margin-top: 0; }
.sim-fb { margin-top: 6px; padding: 8px 12px; border-radius: var(--radius-sm); border: 1px solid var(--l-line); font-size: 0.93rem; line-height: 1.75; }
.sim-fb .g { display: inline-block; margin-right: 6px; padding: 0 8px; border-radius: 5px; font-size: 0.78rem; }
.g-best { color: #6ee7b7; background: rgba(16, 185, 129, 0.16); }
.g-ok { color: #fcd34d; background: rgba(245, 158, 11, 0.16); }
.g-bad { color: #fca5a5; background: rgba(239, 68, 68, 0.16); }
.sim-debrief { margin-top: 10px; padding-top: 4px; border-top: 1px solid var(--l-line); }
.sim-js .sim-step:not(.is-active):not(.is-done) { display: none; }
.sim-js .sim-fb { display: none; }
.sim-js .sim-fb.is-shown { display: block; }
.sim-js .sim-debrief { display: none; }
.sim-js.is-finished .sim-debrief { display: block; }
.sim-js .opts button[disabled] { cursor: default; opacity: 0.85; }
.sim-js .opts button.is-picked.g-best, .sim-js .opts button.is-best-pick { border-color: rgba(16, 185, 129, 0.7); background: rgba(16, 185, 129, 0.14); }
.sim-js .opts button.is-picked.g-ok { border-color: rgba(245, 158, 11, 0.7); background: rgba(245, 158, 11, 0.12); }
.sim-js .opts button.is-picked.g-bad { border-color: rgba(239, 68, 68, 0.7); background: rgba(239, 68, 68, 0.12); }
.sim-bar { height: 6px; border-radius: 99px; background: rgba(148, 163, 184, 0.2); overflow: hidden; margin: 6px 0 12px; }
.sim-bar > span { display: block; height: 100%; background: var(--accent-purple); transition: width var(--transition-smooth); }
.sim-ctl { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.sim-ctl button { padding: 8px 18px; border-radius: var(--radius-full); border: 1px solid var(--border-accent); background: transparent; color: var(--accent-cyan); font: inherit; font-weight: 700; cursor: pointer; }
.sim-ctl button:hover { background: rgba(56, 189, 248, 0.14); }
.sim-result { margin: 12px 0; padding: 12px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border-accent); background: rgba(56, 189, 248, 0.07); }
.sim-result strong { font-family: var(--font-mono); font-size: 1.3rem; color: var(--text-primary); }
.sim-log { margin: 8px 0 0; padding-left: 1.2em; }
.sim-log .g { display: inline-block; padding: 0 8px; border-radius: 5px; font-size: 0.78rem; }
@media (max-width: 600px) {
  .blk-sim { padding: 12px 10px; }
  .sim-step { padding: 12px 10px; }
  .blk { padding: 12px 12px; }
  .learn-wrap { padding-left: 16px; padding-right: 16px; }
}