/* ============================================================
   BOARDS — Brand v2 (concrete wall)
   Concrete-cream wall · warm grey structure · subtle periwinkle signal
   Cockpit/HUD ethos · Board-of-Directors calm authority · restraint as luxury
   Re-skin 2026-06-27: obsidian void → calm creamy concrete; periwinkle dialed back to a hint.
   ============================================================ */

:root{
  /* --- base: creamy concrete wall (warm light greys) --- */
  --void:      #e9e5dc;   /* concrete-cream base (the wall) */
  --void-2:    #e3dfd5;   /* slightly deeper cream — alt bands */
  --panel:     #f3f0e9;   /* card — lighter, raised plaster */
  --panel-2:   #f8f6f1;   /* card raised / hover — near-white cream */
  --line:      #cfc9bc;   /* hairline structure — soft concrete seam */
  --line-2:    #bcb5a6;   /* brighter hairline — deeper seam */

  /* --- warm concrete greys (text + structure) --- */
  --concrete:  #6b6557;   /* mid warm grey - secondary text */
  --concrete-d:#928b7c;   /* dim warm grey - tertiary */
  --ink:       #2b2820;   /* primary text — dark warm charcoal on cream */

  /* --- the signal: ROMAN CRIMSON (shipped 2026-06-30; periwinkle archived in
     boards/ADR/_archive/palette-periwinkle-2026-06-30.md — revert = restore). --- */
  --peri:      #9c2a2a;   /* Roman crimson — primary signal */
  --peri-bright:#b83434;  /* hover / emphasis */
  --peri-dim:  #c98a8a;   /* muted crimson tint */
  --peri-glow: rgba(156,42,42,.14);
  --peri-accent:#6f6cc9;  /* TRUE periwinkle — reserved for RARE accents */

  /* --- functional signals --- */
  --alarm:     #9c2a2a;   /* leak / money-bleed = crimson family (unified) */
  --ok:        #5a6b4e;   /* tight/clean — muted olive, neutralized for crimson-adjacency a11y */

  --maxw: 1140px;
  --r: 14px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--void); color:var(--ink);
  font-family:"Spline Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:17px; line-height:1.6; letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  /* real CC0 béton-brut concrete (ambientCG Concrete034, public domain),
     cream-tinted + low-contrast — matches the app surface (ADR-0015) */
  background-image:url("/boards-wall.jpg");
  background-size:760px auto;
  background-attachment:fixed;
  background-repeat:repeat;
}
h1,h2,h3,.wordmark{font-family:"Spline Sans",sans-serif;font-weight:700;letter-spacing:-.01em}

/* ---- THE BOARDS STAMP (technique C, ADR-0015) ---- */
.stamp,.stamp-peri,.stamp-alarm{
  color:transparent;-webkit-background-clip:text;background-clip:text;
  text-shadow:0 -1px 1px rgba(0,0,0,.5);filter:drop-shadow(0 1px 0 rgba(255,255,255,.5));
}
.stamp{background-image:linear-gradient(180deg,#5f5d53,#82806f)}
.stamp-peri{background-image:linear-gradient(180deg,#46449a,#6360b8);text-shadow:0 -1px 1px rgba(0,0,0,.45)}
.stamp-alarm{background-image:linear-gradient(180deg,#9c322d,#c14a44);text-shadow:0 -1px 1px rgba(0,0,0,.45)}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.narrow{max-width:760px}
.center{text-align:center}
.center-narrow{max-width:640px;margin-left:auto;margin-right:auto;text-align:center}

/* ---------- the mark: an abstract gauge/board glyph ---------- */
.mark{
  display:inline-block;width:18px;height:18px;position:relative;vertical-align:-3px;
  border:2px solid var(--peri);border-radius:5px;
  box-shadow:0 0 14px var(--peri-glow);
}
.mark::before{ /* the readout line inside */
  content:"";position:absolute;left:3px;right:3px;top:50%;height:2px;
  background:var(--peri);transform:translateY(-50%);border-radius:2px;
}
.mark::after{ /* the lock dot */
  content:"";position:absolute;width:4px;height:4px;border-radius:50%;
  background:var(--peri-bright);right:-1px;top:-1px;box-shadow:0 0 8px var(--peri);
}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  max-width:var(--maxw);margin:0 auto;padding:18px 28px;
  background:linear-gradient(var(--void),rgba(233,229,220,.72));
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.wordmark{display:flex;align-items:center;gap:11px;font-weight:700;font-size:19px;letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:30px;font-size:15px}
.nav-links a{color:var(--concrete);transition:color .15s}
.nav-links a:hover{color:var(--ink)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-family:"Space Grotesk",sans-serif;font-weight:600;font-size:15px;
  padding:12px 22px;border-radius:10px;cursor:pointer;transition:.16s;border:1px solid transparent;
  letter-spacing:.01em;
}
.btn-solid{background:var(--peri);color:#f7f6ff;box-shadow:0 0 0 var(--peri-glow)}
.btn-solid:hover{background:var(--peri-bright);box-shadow:0 8px 24px var(--peri-glow);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--peri);color:var(--peri-bright)}
.btn.big{padding:16px 34px;font-size:17px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 84px}
/* hero-grid retired (the concrete wall is the surface now; grid was the
   generic-tool tell). Kept as a no-op so the HTML hook doesn't break. */
.hero-grid{display:none}
.hero-inner{position:relative;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.eyebrow{
  font-family:"JetBrains Mono",monospace;font-size:12.5px;letter-spacing:.22em;
  color:var(--peri);margin-bottom:26px;
}
.hero h1{font-size:clamp(40px,6.4vw,78px);line-height:1.02;margin:0 0 26px;font-weight:700}
.hero h1 .accent{
  background:linear-gradient(180deg,var(--peri),var(--peri-bright));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.lede{font-size:20px;color:var(--concrete);max-width:620px;margin:0 0 32px}
.hero-cta{display:flex;gap:14px;margin-bottom:54px;flex-wrap:wrap}

/* ---------- the signature HUD readout ---------- */
.readout{
  position:relative;max-width:720px;border:1px solid var(--line-2);border-radius:var(--r);
  background:
    /* faint instrument scan-lines */
    repeating-linear-gradient(0deg, rgba(111,108,201,.04) 0 1px, transparent 1px 5px),
    /* soft periwinkle top-left tint */
    radial-gradient(120% 90% at 0% 0%, rgba(111,108,201,.07), transparent 55%),
    /* alarm tint from the leak edge */
    radial-gradient(100% 120% at 0% 50%, rgba(212,69,63,.06), transparent 50%),
    linear-gradient(180deg,#fbf9f4,var(--panel));
  border-left:3px solid var(--alarm);
  box-shadow:
    0 22px 60px rgba(60,52,38,.16),
    0 2px 0 rgba(255,255,255,.6) inset,
    inset 0 0 60px rgba(255,255,255,.3);
  overflow:hidden;
}
/* corner brackets — instrument-panel framing (all four via head/foot pseudo-anchors) */
.readout::before,.readout::after{
  content:"";position:absolute;width:15px;height:15px;pointer-events:none;z-index:3;
}
.readout::before{top:9px;left:9px;border-top:2px solid var(--peri);border-left:2px solid var(--peri);opacity:.55;box-shadow:-2px -2px 8px var(--peri-glow)}
.readout::after{top:9px;right:9px;border-top:2px solid var(--peri);border-right:2px solid var(--peri);opacity:.55;box-shadow:2px -2px 8px var(--peri-glow)}
.readout-foot::before,.readout-foot::after{
  content:"";position:absolute;width:15px;height:15px;pointer-events:none;z-index:3;
}
.readout-foot::before{bottom:9px;left:9px;border-bottom:2px solid var(--peri);border-left:2px solid var(--peri);opacity:.55;box-shadow:-2px 2px 8px var(--peri-glow)}
.readout-foot::after{bottom:9px;right:9px;border-bottom:2px solid var(--peri);border-right:2px solid var(--peri);opacity:.55;box-shadow:2px 2px 8px var(--peri-glow)}
.readout-head{
  position:relative;z-index:1;display:flex;align-items:center;gap:10px;
  font-family:"JetBrains Mono",monospace;font-size:12.5px;letter-spacing:.16em;
  color:var(--alarm);padding:14px 22px;
  border-bottom:1px solid var(--line-2);
  background:linear-gradient(180deg,rgba(212,69,63,.07),transparent);
}
.readout-head .dot{width:8px;height:8px;border-radius:50%;background:var(--alarm);
  box-shadow:0 0 10px var(--alarm);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.readout-plant{margin-left:auto;color:var(--concrete-d);letter-spacing:.1em}
.readout-body{position:relative;z-index:1;display:flex;gap:30px;padding:28px 22px;flex-wrap:wrap}
.readout-figure{min-width:230px}
.figure-num{font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:54px;line-height:1;color:var(--alarm);
  text-shadow:0 1px 0 rgba(255,255,255,.6)}
.figure-num .per{font-size:22px;color:var(--concrete-d);margin-left:6px;letter-spacing:0}
.figure-label{font-family:"JetBrains Mono",monospace;font-size:13px;letter-spacing:.14em;color:var(--alarm);margin-top:8px;text-transform:uppercase}
.readout-stats{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:14px 26px;align-content:center;min-width:260px}
.stat{display:flex;flex-direction:column;gap:3px}
.stat .k{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.12em;color:var(--concrete-d);text-transform:uppercase}
.stat .v{font-family:"JetBrains Mono",monospace;font-size:16px;color:var(--ink);font-weight:600}
.stat .v.ok{color:var(--ok)}
.stat .v .u{color:var(--concrete-d);font-size:12px}
.readout-foot{
  position:relative;z-index:1;
  padding:13px 22px;border-top:1px solid var(--line-2);
  font-size:14px;color:var(--peri-bright);font-style:italic;
  background:linear-gradient(180deg,transparent,rgba(111,108,201,.08));
}

/* ---------- bands ---------- */
.band{padding:88px 0;border-top:1px solid var(--line)}
.band.alt{background:linear-gradient(180deg,var(--void-2),var(--void))}
.section-title{font-size:clamp(28px,4vw,44px);line-height:1.08;margin:0 0 22px;font-weight:700}
.body-lg{font-size:19px;color:var(--concrete);line-height:1.7}
.cta{background:radial-gradient(ellipse 80% 100% at 50% 0%,rgba(143,140,255,.07),transparent 60%)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:48px}
.step{padding:30px;border:1px solid var(--line);border-radius:var(--r);background:var(--panel)}
.step-n{font-family:"JetBrains Mono",monospace;font-size:14px;letter-spacing:.2em;color:var(--peri);margin-bottom:18px}
.step h3{font-size:21px;margin:0 0 10px}
.step p{color:var(--concrete);font-size:16px;margin:0}

/* ---------- subsystem cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:48px}
.card{
  padding:28px;border:1px solid var(--line);border-radius:var(--r);
  background:var(--panel);transition:.18s;position:relative;
}
.card:hover{border-color:var(--line-2);background:var(--panel-2);transform:translateY(-2px)}
.card-tag{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.18em;color:var(--concrete-d);margin-bottom:14px}
.card h3{font-size:22px;margin:0 0 10px}
.card p{color:var(--concrete);font-size:15.5px;margin:0;line-height:1.65}
.lead-card{border-color:var(--peri-dim);box-shadow:0 0 40px var(--peri-glow)}
.lead-card .card-tag{color:var(--peri)}
.lead-card h3{color:var(--peri-bright)}
.close-card{border-left:3px solid var(--peri-dim)}
.close-card .card-tag{color:var(--peri)}

/* ---------- trust list ---------- */
.trust-list{list-style:none;padding:0;margin:40px 0 0;display:grid;gap:20px}
.trust-list li{
  padding:22px 26px;border:1px solid var(--line);border-radius:var(--r);background:var(--panel);
  font-size:17px;color:var(--concrete);position:relative;padding-left:54px;
}
.trust-list li b{color:var(--ink);font-weight:600}
.trust-list li::before{
  content:"";position:absolute;left:24px;top:27px;width:8px;height:8px;border-radius:2px;
  background:var(--peri);box-shadow:0 0 10px var(--peri-glow);
}

/* ---------- cta ---------- */
.cta .btn{margin-top:14px}
.cta-fine{margin-top:22px;font-family:"JetBrains Mono",monospace;font-size:12.5px;letter-spacing:.1em;color:var(--concrete-d)}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);padding:40px 0;background:var(--void-2)}
.foot-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.foot-brand{display:flex;align-items:center;gap:11px;font-family:"Space Grotesk",sans-serif;font-weight:700;letter-spacing:.16em}
.foot-tag{font-family:"Inter",sans-serif;font-weight:400;letter-spacing:0;color:var(--concrete-d);font-size:14px;margin-left:8px}
.foot-meta{display:flex;gap:24px;font-family:"JetBrains Mono",monospace;font-size:13px;color:var(--concrete-d);letter-spacing:.06em}

/* ---------- responsive ---------- */
@media(max-width:860px){
  .nav-links a:not(.btn){display:none}
  .steps,.cards{grid-template-columns:1fr}
  .readout-body{gap:22px}
  .hero{padding:40px 0 60px}
  .band{padding:64px 0}
}