/* Backstack marketing site - governance-wedge rewrite (2026-06-21)
   Dependency-free. Edit copy directly in the .html files; edit design here. */

:root {
  --bg: #000000;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #ededed;
  --muted: #a1a1aa;
  --muted-2: #71717a;
  /* signature brand gradient (preserved from original) */
  --brand-brown: #8B4513;
  --brand-magenta: #6B1B47;
  --brand-teal: #0D6E62;
  --brand-teal-bright: #14b8a6;
  --radial: #044A54;
  --maxw: 1120px;
  font-synthesis: none;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
  position: relative;
  min-height: 100vh;
}

/* fixed brand background */
.bg-layer { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.bg-layer .grad {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--brand-brown) 0%, var(--brand-magenta) 30%, var(--brand-teal) 60%);
  opacity: 0.55;
}
.bg-layer .radial {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at top, var(--radial) 0%, transparent 50%);
  opacity: 0.6;
}
.bg-layer .fade {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent 0%, #0a0a0a 55%, #000 100%);
}
.content { position: relative; z-index: 10; }

a { color: inherit; text-decoration: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- nav ---------- */
header.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(12px); background: rgba(0,0,0,0.35); border-bottom: 1px solid var(--panel-border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 700; font-size: 19px; letter-spacing: -0.02em; display: flex; align-items: center; gap: 9px; }
.brand img.logo { height: 22px; width: auto; display: block; }
.brand .dot { width: 11px; height: 11px; border-radius: 3px; background: linear-gradient(135deg, var(--brand-teal-bright), var(--brand-magenta)); box-shadow: 0 0 14px rgba(20,184,166,0.6); }
footer .brand img.logo { height: 20px; opacity: 0.92; }
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 15px; color: var(--muted); }
.nav-links a:hover { color: var(--text); }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; border-radius: 10px; padding: 11px 20px; transition: transform .12s ease, box-shadow .2s ease, background .2s ease; cursor: pointer; border: 1px solid transparent; white-space: nowrap; }
.btn-primary { background: linear-gradient(135deg, var(--brand-teal-bright), var(--brand-teal)); color: #02110f; box-shadow: 0 6px 24px rgba(20,184,166,0.28); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(20,184,166,0.4); }
.btn-ghost { background: rgba(255,255,255,0.05); color: var(--text); border-color: var(--panel-border); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); }
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* ---------- hero ---------- */
.hero { padding: 96px 0 72px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--brand-teal-bright); background: rgba(20,184,166,0.1); border: 1px solid rgba(20,184,166,0.25); padding: 6px 14px; border-radius: 999px; }
h1.hero-title { font-size: clamp(40px, 6vw, 68px); line-height: 1.02; letter-spacing: -0.03em; font-weight: 800; margin: 26px auto 0; max-width: 14ch; }
.hero-title .accent { background: linear-gradient(120deg, var(--brand-teal-bright), #5eead4); -webkit-background-clip: text; background-clip: text; color: transparent; }
p.lede { font-size: clamp(17px, 2.1vw, 21px); color: var(--muted); max-width: 60ch; margin: 26px auto 0; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 38px; }
.hero-note { margin-top: 18px; font-size: 13px; color: var(--muted-2); }

/* ---------- sections ---------- */
section { padding: 64px 0; }
.section-head { text-align: center; max-width: 60ch; margin: 0 auto 48px; }
.section-head .kicker { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--brand-teal-bright); }
.section-head h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: -0.02em; font-weight: 800; margin-top: 12px; line-height: 1.1; }
.section-head p { color: var(--muted); margin-top: 16px; font-size: 18px; }

/* problem strip */
.strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.strip .item { border: 1px solid var(--panel-border); background: var(--panel); border-radius: 14px; padding: 24px; }
.strip .item h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.strip .item p { color: var(--muted); font-size: 15px; }

/* card grid */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card { border: 1px solid var(--panel-border); background: var(--panel); border-radius: 16px; padding: 28px; transition: border-color .2s ease, transform .15s ease, background .2s ease; }
.card:hover { border-color: rgba(20,184,166,0.4); transform: translateY(-3px); background: rgba(255,255,255,0.06); }
.card .ic { width: 44px; height: 44px; border-radius: 11px; display: grid; place-items: center; color: var(--brand-teal-bright); background: linear-gradient(135deg, rgba(20,184,166,0.18), rgba(107,27,71,0.18)); border: 1px solid var(--panel-border); margin-bottom: 18px; }
.card .ic svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { font-size: 19px; font-weight: 700; letter-spacing: -0.01em; }
.card p { color: var(--muted); margin-top: 10px; font-size: 15px; }

/* how it works */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.step { border: 1px solid var(--panel-border); background: var(--panel); border-radius: 14px; padding: 24px; position: relative; }
.step .n { font-size: 13px; font-weight: 700; color: var(--brand-teal-bright); letter-spacing: 0.1em; }
.step h3 { font-size: 17px; font-weight: 700; margin: 10px 0 8px; }
.step p { color: var(--muted); font-size: 14px; }

/* wow / split */
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.split .copy h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: -0.02em; line-height: 1.12; }
.split .copy p { color: var(--muted); margin-top: 18px; font-size: 17px; }
.split .copy .tag { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--brand-magenta); filter: brightness(1.6); }
.chatbox { border: 1px solid var(--panel-border); background: rgba(0,0,0,0.45); border-radius: 16px; padding: 20px; font-size: 14px; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.chatbox .msg { padding: 12px 14px; border-radius: 12px; margin-bottom: 12px; }
.chatbox .you { background: rgba(20,184,166,0.12); border: 1px solid rgba(20,184,166,0.25); }
.chatbox .bs { background: rgba(255,255,255,0.05); border: 1px solid var(--panel-border); color: var(--muted); }
.chatbox .lbl { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted-2); margin-bottom: 5px; }

/* cta band */
.cta-band { text-align: center; border: 1px solid var(--panel-border); border-radius: 24px; padding: 64px 32px; background: linear-gradient(135deg, rgba(139,69,19,0.18), rgba(107,27,71,0.18) 45%, rgba(13,110,98,0.22)); }
.cta-band h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; letter-spacing: -0.02em; max-width: 18ch; margin: 0 auto; }
.cta-band p { color: var(--muted); margin: 18px auto 0; max-width: 52ch; font-size: 18px; }
.cta-band .hero-cta { margin-top: 32px; }

/* pricing */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 1080px; margin: 0 auto; align-items: start; }
.tier { border: 1px solid var(--panel-border); background: var(--panel); border-radius: 18px; padding: 32px; display: flex; flex-direction: column; }
.tier.featured { border-color: rgba(20,184,166,0.5); box-shadow: 0 0 40px rgba(20,184,166,0.12); }
.tier .tier-badge { display: inline-flex; align-self: flex-start; font-size: 12px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--brand-teal-bright); background: rgba(20,184,166,0.1); border: 1px solid rgba(20,184,166,0.25); padding: 4px 11px; border-radius: 999px; margin-bottom: 14px; }
.tier h3 { font-size: 22px; font-weight: 800; }
.tier .price { font-size: 34px; font-weight: 800; margin: 14px 0 4px; letter-spacing: -0.02em; }
.tier .price small { font-size: 15px; font-weight: 500; color: var(--muted); }
.tier .desc { color: var(--muted); font-size: 15px; min-height: 44px; }
.tier ul { list-style: none; margin: 22px 0 28px; display: grid; gap: 11px; }
.tier li { font-size: 15px; color: var(--text); padding-left: 26px; position: relative; }
.tier li::before { content: "→"; position: absolute; left: 0; color: var(--brand-teal-bright); font-weight: 700; }
.tier .btn { width: 100%; justify-content: center; margin-top: auto; }

/* faq / prose */
.prose { max-width: 760px; margin: 0 auto; }
.prose h2 { font-size: 28px; font-weight: 800; margin: 36px 0 16px; letter-spacing: -0.02em; }
.prose h3 { font-size: 18px; font-weight: 700; margin: 26px 0 6px; }
.prose p { color: var(--muted); margin-bottom: 14px; }
.prose ul { color: var(--muted); margin: 0 0 14px 22px; }

/* footer */
footer { border-top: 1px solid var(--panel-border); margin-top: 40px; padding: 48px 0 56px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.foot-grid .col h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted-2); margin-bottom: 14px; }
.foot-grid .col a { display: block; color: var(--muted); font-size: 15px; margin-bottom: 9px; }
.foot-grid .col a:hover { color: var(--text); }
.foot-grid .about p { color: var(--muted); font-size: 15px; max-width: 34ch; margin-top: 12px; }
.foot-bottom { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--panel-border); color: var(--muted-2); font-size: 14px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

@media (max-width: 860px) {
  .strip, .cards, .steps, .tiers, .split, .foot-grid { grid-template-columns: 1fr; }
  .nav-links .hide-sm { display: none; }
  .hero { padding: 64px 0 48px; }
}

/* ---------- request-a-demo modal (lead capture) ---------- */
.demo-modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 24px; }
.demo-modal[hidden] { display: none; }
.demo-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.72); backdrop-filter: blur(6px); }
.demo-dialog { position: relative; width: 100%; max-width: 440px; border: 1px solid var(--panel-border); border-radius: 18px; padding: 32px; background: linear-gradient(135deg, rgba(139,69,19,0.16), rgba(107,27,71,0.14) 45%, rgba(13,110,98,0.18)), #0b0b0c; box-shadow: 0 30px 80px rgba(0,0,0,0.6); }
.demo-x { position: absolute; top: 14px; right: 16px; background: none; border: none; color: var(--muted-2); font-size: 22px; line-height: 1; cursor: pointer; padding: 4px; }
.demo-x:hover { color: var(--text); }
.demo-body h3 { font-size: 24px; font-weight: 800; letter-spacing: -0.02em; }
.demo-sub { color: var(--muted); font-size: 15px; margin-top: 10px; }
.demo-form { margin-top: 22px; display: flex; flex-direction: column; }
.demo-label { font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 8px; }
.demo-input { background: rgba(255,255,255,0.05); border: 1px solid var(--panel-border); border-radius: 10px; padding: 12px 14px; color: var(--text); font-size: 15px; font-family: inherit; outline: none; transition: border-color .15s ease, box-shadow .15s ease; }
.demo-input:focus { border-color: rgba(20,184,166,0.6); box-shadow: 0 0 0 3px rgba(20,184,166,0.15); }
.demo-input.err { border-color: rgba(244,63,94,0.6); box-shadow: 0 0 0 3px rgba(244,63,94,0.12); }
.demo-disclaimer { font-size: 12px; color: var(--muted-2); margin: 12px 0 18px; line-height: 1.5; }
.demo-disclaimer a { color: var(--brand-teal-bright); text-decoration: underline; }
.demo-submit { width: 100%; justify-content: center; }
.demo-submit:disabled { opacity: 0.6; cursor: default; transform: none; box-shadow: none; }
.demo-msg { font-size: 13px; margin-top: 12px; }
.demo-msg.err { color: #fb7185; }
.demo-success { text-align: center; padding: 8px 0; }
.demo-success .demo-check { width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 14px; display: grid; place-items: center; color: var(--brand-teal-bright); background: linear-gradient(135deg, rgba(20,184,166,0.2), rgba(107,27,71,0.18)); border: 1px solid var(--panel-border); }
.demo-success .demo-check svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.demo-success h3 { font-size: 21px; font-weight: 800; }
.demo-success p { color: var(--muted); font-size: 15px; margin: 10px 0 22px; }
body.demo-open { overflow: hidden; }