/* ============================================================
   Coup Revolution · AI Driven — shared stylesheet (W0 dark theme)
   Design intent: modern AI × Archive × Research dark surface.
   Midnight-lab / digital-archive mood; epistemic badges carry the color.
   Content is the product; structure is the lens.
   ============================================================ */

/* ---------- Reset & tokens ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --paper:#0d0f10;
  --bg:#111416;
  --panel:#1c2123;
  --ink:#ece9e1;
  --ink-soft:#d6d3ca;
  --muted:#a7aaa6;
  --faint:#a7aaa640;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --accent:#5fc2a8;
  --accent-soft:rgba(95,194,168,.12);
  --radius:10px;
  --radius-sm:6px;
  --shadow:0 1px 2px rgba(0,0,0,.35),0 6px 18px rgba(0,0,0,.35);
  --shadow-lift:0 2px 4px rgba(0,0,0,.45),0 12px 28px rgba(0,0,0,.5);
  --maxw:1120px;
  --readw:760px;
  --font:"Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic UI","Meiryo",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --nav-h:64px;
}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  background:var(--paper);
  color:var(--ink);
  line-height:1.92;
  font-size:16.5px;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none;transition:color .15s ease}
a:hover{color:#73cbb4;text-underline-offset:3px}
a:visited{color:var(--accent)}
ul,ol{padding-left:1.2em}
li{margin:.35em 0}
h1,h2,h3,h4{font-weight:650;line-height:1.35;letter-spacing:.005em;color:var(--ink)}
h1{font-size:clamp(1.9rem,4.4vw,2.75rem);font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(1.4rem,3vw,1.85rem)}
h3{font-size:1.18rem}
p{margin:0 0 1.15em}
:focus-visible{outline:2.5px solid var(--accent);outline-offset:2px;border-radius:3px}

/* ---------- Layout primitives ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.reading{max-width:var(--readw)}
.section{padding:64px 0}
.section--tight{padding:40px 0}
.eyebrow{font-size:.74rem;font-weight:650;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;display:flex;align-items:center;gap:9px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block;border-radius:2px}
.lead{font-size:1.12rem;color:var(--ink-soft);line-height:2;margin-bottom:1.4em}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(16,19,20,.82);
  backdrop-filter:saturate(1.2) blur(10px);
  -webkit-backdrop-filter:saturate(1.2) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:1.02rem;letter-spacing:.01em;color:var(--ink)}
.brand .mark{width:30px;height:30px;flex:none}
.brand small{display:block;font-size:.66rem;font-weight:550;color:var(--muted);letter-spacing:.06em;margin-top:-2px}

.main-nav ul{display:flex;align-items:center;gap:4px;list-style:none}
.main-nav a{
  display:block;padding:8px 13px;border-radius:8px;font-size:.92rem;font-weight:520;color:var(--muted);
}
.main-nav a:hover{background:var(--panel);color:var(--ink)}
.main-nav a[aria-current="page"]{background:var(--accent-soft);color:var(--accent);font-weight:600}

.nav-toggle{
  display:none;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line-strong);
  background:var(--bg);border-radius:9px;cursor:pointer;color:var(--ink);
}
.nav-toggle svg{width:21px;height:21px}

/* ---------- Footer ---------- */
.site-footer{background:#0a0c0d;color:var(--muted);padding:52px 0 30px;font-size:.9rem;margin-top:8px;border-top:1px solid var(--line)}
.site-footer a{color:#5fc2a8}
.site-footer a:hover{color:#73cbb4;text-underline-offset:3px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.footer-grid h4{color:var(--ink);font-size:.95rem;margin-bottom:14px;letter-spacing:.03em}
.footer-grid ul{list-style:none}
.footer-grid li{margin:.5em 0}
.footer-legend{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-note{border-top:1px solid rgba(255,255,255,.07);margin-top:34px;padding-top:20px;color:#8e9490;font-size:.8rem;line-height:1.8}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:9px;font-size:.92rem;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:transform .12s ease,box-shadow .15s ease,background .15s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--accent);color:#10231d;box-shadow:var(--shadow)}
.btn--primary:hover{background:#73cbb4;color:#10231d}
.btn--ghost{background:transparent;color:var(--ink-soft);border-color:var(--line-strong)}
.btn--ghost:hover{background:var(--panel);color:var(--ink)}
.btn--sm{padding:8px 14px;font-size:.85rem}

/* ---------- Cards ---------- */
.card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);
  transition:transform .14s ease,box-shadow .18s ease,border-color .14s ease;display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:rgba(255,255,255,.16)}
.card h3{margin-bottom:10px}
.card p{color:var(--ink-soft);font-size:.95rem;flex:1}
.card .card-tag{font-size:.72rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);font-weight:650;margin-bottom:12px}
.card .card-link{margin-top:16px;font-size:.88rem;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.card .card-link::after{content:"→";transition:transform .15s ease}
.card:hover .card-link::after{transform:translateX(4px)}

.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px;margin-top:26px}

/* ---------- Epistemic badges (dark-tuned) ---------- */
.badge{
  display:inline-flex;align-items:center;gap:7px;padding:4.5px 12px 4.5px 10px;border-radius:999px;
  font-size:.775rem;font-weight:640;letter-spacing:.02em;line-height:1.4;border:1px solid;white-space:nowrap;
}
.badge .dot{width:7px;height:7px;border-radius:50%;flex:none}
.badge--active{background:rgba(95,194,168,.13);color:#8fd7c0;border-color:rgba(95,194,168,.38)}
.badge--active .dot{background:#5fc2a8}
.badge--record{background:rgba(122,140,196,.13);color:#9fb0dd;border-color:rgba(122,140,196,.38)}
.badge--record .dot{background:#8b9ccd}
.badge--source{background:rgba(190,166,105,.13);color:#d3c093;border-color:rgba(190,166,105,.38)}
.badge--source .dot{background:#c4ab6f}
.badge--claim{background:rgba(200,132,105,.13);color:#dcae97;border-color:rgba(200,132,105,.38)}
.badge--claim .dot{background:#c88469}
.badge--vision{background:rgba(158,133,208,.13);color:#bdaee0;border-color:rgba(158,133,208,.38)}
.badge--vision .dot{background:#a08cd0}

/* ---------- Callout / disclaimer ---------- */
.callout{
  border-left:3px solid var(--line-strong);background:var(--panel);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:16px 20px;margin:22px 0;font-size:.93rem;color:var(--ink-soft);
}
.callout p{margin:.2em 0}
.callout--claim{border-left-color:#c88469;background:rgba(200,132,105,.1)}
.callout--claim .callout-title{color:#dcae97}
.callout--safe{border-left-color:var(--accent);background:rgba(95,194,168,.08)}
.callout-title{font-weight:700;display:flex;align-items:center;gap:8px;margin-bottom:6px;font-size:.92rem}

/* ---------- Page head ---------- */
.page-head{padding:56px 0 40px}
.page-head .breadcrumb{font-size:.8rem;color:var(--muted);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:6px}
.page-head .breadcrumb a{color:var(--muted)}
.page-head .breadcrumb .sep{opacity:.4}
.page-title-block{display:flex;flex-wrap:wrap;align-items:flex-start;gap:18px 20px}
.page-title-block .head-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

/* ---------- Body article ---------- */
.article{padding:10px 0 30px}
.article h2{margin:2.2em 0 .8em;padding-top:.4em}
.article h3{margin:1.7em 0 .6em}
.article a:not(.btn){text-underline-offset:3px;border-bottom:1px solid rgba(95,194,168,.4);padding-bottom:1px}
.article blockquote{
  border-left:3px solid var(--line-strong);padding:6px 0 6px 22px;margin:1.4em 0;color:var(--ink-soft);
  font-size:1.02rem;background:linear-gradient(90deg,var(--panel) 0%,transparent 100%);border-radius:0 8px 8px 0;
}
.article blockquote cite{display:block;margin-top:10px;font-size:.85rem;color:var(--muted);font-style:normal}
.article table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.93rem}
.article th,.article td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.article th{background:var(--panel);font-weight:650}
.article code{font-family:var(--mono);font-size:.86em;background:var(--panel);padding:2px 6px;border-radius:4px;border:1px solid var(--line)}

/* ---------- Side nav (section sub-nav) ---------- */
.sidenav{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--bg);padding:20px;box-shadow:var(--shadow);
}
.sidenav h4{font-size:.78rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.sidenav ul{list-style:none}
.sidenav li{margin:.15em 0}
.sidenav a{
  display:block;padding:8px 11px;border-radius:7px;font-size:.9rem;color:var(--ink-soft);border-left:2px solid transparent;
}
.sidenav a:hover{background:var(--panel);color:var(--ink);border-left-color:var(--line-strong)}
.sidenav a[aria-current="page"]{background:var(--accent-soft);color:var(--accent);font-weight:600;border-left-color:var(--accent)}
.sidenav--sticky{position:sticky;top:calc(var(--nav-h) + 20px)}

/* two-column layout for pages with side nav */
.layout-split{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:44px;align-items:start}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:84px 0 72px}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(1100px 480px at 82% -18%,rgba(95,194,168,.10) 0%,transparent 60%),
    radial-gradient(900px 420px at 8% -10%,rgba(80,110,140,.09) 0%,transparent 55%);
  z-index:-1;
}
.hero .kicker{font-size:.8rem;font-weight:650;letter-spacing:.13em;text-transform:uppercase;color:var(--accent);margin-bottom:18px;display:flex;align-items:center;gap:10px}
.hero .kicker::before{content:"";width:26px;height:2px;background:var(--accent)}
.hero h1{max-width:19ch}
.hero .sub{max-width:58ch;margin-top:20px}
.hero-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- Persona cards ---------- */
.persona-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:46px}
.persona{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .14s,box-shadow .16s,border-color .14s;
}
.persona:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:rgba(255,255,255,.16)}
.persona .p-ico{width:42px;height:42px;border-radius:10px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--accent)}
.persona .p-ico svg{width:22px;height:22px}
.persona h3{font-size:1.06rem;margin-bottom:8px}
.persona p{font-size:.9rem;color:var(--ink-soft);flex:1}
.persona .card-link{margin-top:16px}

/* ---------- Story line ---------- */
.storyline{display:flex;align-items:stretch;gap:0;margin:26px 0 8px;flex-wrap:wrap}
.story-node{flex:1;min-width:170px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;position:relative}
.story-node .sn-tag{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:650}
.story-node h4{font-size:1rem;margin:8px 0 6px}
.story-node p{font-size:.86rem;color:var(--ink-soft);margin:0}
.story-arrow{display:flex;align-items:center;justify-content:center;padding:0 6px;color:var(--muted);flex:none}
.story-arrow svg{width:22px;height:22px}

/* ---------- Legend strip ---------- */
.legend{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:20px}
.legend-item{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 15px}
.legend-item .badge{margin-bottom:9px}
.legend-item h4{font-size:.92rem;margin-bottom:4px}
.legend-item p{font-size:.8rem;color:var(--muted);margin:0;line-height:1.6}

/* ---------- Utility ---------- */
.stack{display:flex;flex-direction:column;gap:16px}
.row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.spacer-s{height:16px}.spacer-m{height:32px}.spacer-l{height:56px}
.center{text-align:center}

/* ---------- Print ---------- */
@media print{
  .site-header,.site-footer,.sidenav,.nav-toggle,.hero-actions,.persona .p-ico{display:none!important}
  body{background:#fff;color:#1c1a17;font-size:11pt}
  .card,.persona{box-shadow:none;border-color:#bbb;break-inside:avoid}
  a{color:#000;text-decoration:underline}
}

/* ============================ Responsive ============================ */
@media (max-width:960px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-grid>div:first-child{grid-column:1/-1}
  .legend{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:840px){
  .layout-split{grid-template-columns:1fr;gap:30px}
  .sidenav--sticky{position:static}
  .persona-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  body{font-size:16px}
  .section{padding:48px 0}
  .page-head{padding:44px 0 30px}
  .hero{padding:60px 0 52px}
  .persona-grid{grid-template-columns:1fr}

  /* mobile nav */
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;inset:var(--nav-h) 0 auto 0;
    background:var(--paper);border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-lift);
    transform:translateY(-120%);transition:transform .28s ease;z-index:55;
    max-height:calc(100vh - var(--nav-h));overflow:auto;
  }
  .main-nav.is-open{transform:translateY(0)}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px;padding:14px 18px 22px}
  .main-nav a{padding:13px 14px;font-size:1rem;border-radius:9px;border-bottom:1px solid var(--line)}
  .main-nav a[aria-current="page"]{border-bottom-color:var(--line)}
  .nav-toggle[aria-expanded="true"] .i-close{display:block}
  .nav-toggle[aria-expanded="true"] .i-bars{display:none}
  .nav-toggle .i-close{display:none}
  .logo-sub{display:none}
  .storyline{flex-direction:column}
  .story-arrow{transform:rotate(90deg);padding:2px 0}
  /* legacy 2-column stack on small screens */
  #legacy .container>div[style*="grid-template-columns"]{
    display:flex!important;flex-direction:column;gap:16px;
  }
  #legacy .container h3{white-space:normal;overflow-wrap:anywhere}
}
/* dark theme: legacy section's inline light palette — neutralize via tokens (CSS-only) */
#legacy .card[style*="#f0f5f4"]{background:rgba(95,194,168,.10)!important}
@media (max-width:520px){
  .legend{grid-template-columns:1fr}
  .container{padding:0 16px}
  .card{padding:20px}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto}
}