/* =============================================================================
   BPIN Inventory — Advanced Inventory Management System
   Shared design system.  Self-contained: system + monospace stacks (no webfont
   fetch → fast LCP, good Core Web Vitals for SEO).  Theme-aware (light/dark).
   Motif: cool industrial neutrals · signal-teal accent · monospace "ledger/SKU".
   ============================================================================= */

:root {
  /* cool-biased neutral scale (chosen, not default grey) */
  --n-950:#0a0d12; --n-900:#10141b; --n-850:#151a22; --n-800:#1b212b;
  --n-700:#2a313d; --n-600:#3b4453; --n-500:#69737f; --n-400:#8b95a1;
  --n-300:#c0c8d2; --n-200:#dde3ea; --n-100:#eef2f6; --n-50:#f6f8fb; --white:#fff;

  /* signal-teal accent (stock-health, data) + warm highlight (used sparingly) */
  --acc:#0fb5a6; --acc-600:#0a9488; --acc-700:#0a7a70; --acc-200:#bdeee9; --acc-050:#e7f8f6;
  --warm:#f2a63b; --warm-050:#fdf3e2;
  --good:#1f9d67; --crit:#e5484d;

  /* semantic tokens (light default) */
  --bg:var(--n-50); --bg-elev:var(--white); --bg-sunken:var(--n-100);
  --text:var(--n-900); --text-soft:var(--n-600); --text-faint:var(--n-500);
  --border:var(--n-200); --border-strong:var(--n-300);
  --accent:var(--acc-600); --accent-contrast:#fff; --accent-tint:var(--acc-050);
  --hero-bg:var(--n-950); --hero-text:#eaf0f6; --hero-soft:#9aa6b4;

  --font-sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-mono:ui-monospace,"SF Mono","Cascadia Code","JetBrains Mono","Roboto Mono",Menlo,monospace;

  --maxw:1140px; --radius:14px; --radius-sm:9px;
  --shadow-sm:0 1px 2px rgba(10,13,18,.06),0 1px 3px rgba(10,13,18,.05);
  --shadow:0 8px 24px -8px rgba(10,13,18,.14),0 2px 6px rgba(10,13,18,.06);
  --shadow-lg:0 30px 60px -18px rgba(10,13,18,.28);
  --step:1.5rem;
}

@media (prefers-color-scheme: dark) {
  :root{
    --bg:var(--n-950); --bg-elev:var(--n-900); --bg-sunken:#0c1016;
    --text:#e8edf3; --text-soft:#aab4c0; --text-faint:#7c8794;
    --border:#232b36; --border-strong:#333d4b;
    --accent:var(--acc); --accent-contrast:#04231f; --accent-tint:#0e2a29;
    --hero-bg:#080b10; --hero-text:#eaf0f6; --hero-soft:#8f9bab;
  }
}
:root[data-theme="dark"]{
  --bg:var(--n-950); --bg-elev:var(--n-900); --bg-sunken:#0c1016;
  --text:#e8edf3; --text-soft:#aab4c0; --text-faint:#7c8794;
  --border:#232b36; --border-strong:#333d4b;
  --accent:var(--acc); --accent-contrast:#04231f; --accent-tint:#0e2a29;
  --hero-bg:#080b10; --hero-text:#eaf0f6; --hero-soft:#8f9bab;
}
:root[data-theme="light"]{
  --bg:var(--n-50); --bg-elev:var(--white); --bg-sunken:var(--n-100);
  --text:var(--n-900); --text-soft:var(--n-600); --text-faint:var(--n-500);
  --border:var(--n-200); --border-strong:var(--n-300);
  --accent:var(--acc-600); --accent-contrast:#fff; --accent-tint:var(--acc-050);
  --hero-bg:var(--n-950); --hero-text:#eaf0f6; --hero-soft:#9aa6b4;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-sans);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

img,svg{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2.5px solid var(--acc);outline-offset:3px;border-radius:4px}

h1,h2,h3,h4{margin:0 0 .5em;line-height:1.12;letter-spacing:-.02em;text-wrap:balance;font-weight:800}
h1{font-size:clamp(2.3rem,5.4vw,3.9rem)}
h2{font-size:clamp(1.8rem,3.6vw,2.7rem)}
h3{font-size:1.28rem;letter-spacing:-.01em}
p{margin:0 0 1rem}
.lead{font-size:clamp(1.08rem,1.9vw,1.32rem);color:var(--text-soft);line-height:1.55;max-width:62ch}

/* mono "ledger" label motif */
.eyebrow{
  font-family:var(--font-mono);font-size:.74rem;font-weight:600;
  text-transform:uppercase;letter-spacing:.18em;color:var(--accent);
  display:inline-flex;align-items:center;gap:.6ch;margin:0 0 1rem;
}
.eyebrow::before{content:"";width:1.6rem;height:1px;background:var(--accent);display:inline-block}

.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(1.1rem,4vw,2rem)}
section{padding-block:clamp(3.5rem,8vw,6.5rem)}
.section-sunken{background:var(--bg-sunken);border-block:1px solid var(--border)}

/* ---- buttons ---- */
.btn{
  --_bg:var(--accent);--_fg:var(--accent-contrast);
  display:inline-flex;align-items:center;gap:.55ch;justify-content:center;
  font-weight:650;font-size:.98rem;padding:.8rem 1.35rem;border-radius:var(--radius-sm);
  background:var(--_bg);color:var(--_fg);border:1px solid transparent;cursor:pointer;
  transition:transform .12s ease,box-shadow .12s ease,background .12s;box-shadow:var(--shadow-sm);
}
.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn--ghost{--_bg:transparent;--_fg:var(--text);border-color:var(--border-strong);box-shadow:none}
.btn--ghost:hover{background:var(--bg-sunken)}
/* ghost buttons sit on always-dark grounds (hero + CTA band) — force legible light text */
.hero .btn--ghost,.cta-band .btn--ghost{--_fg:#eef2f6;border-color:rgba(255,255,255,.28)}
.hero .btn--ghost:hover,.cta-band .btn--ghost:hover{background:rgba(255,255,255,.09)}
.btn--lg{padding:.95rem 1.7rem;font-size:1.05rem}
.btn-row{display:flex;flex-wrap:wrap;gap:.8rem;align-items:center}

/* ---- top nav ---- */
.nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--border)}
.nav__in{display:flex;align-items:center;gap:1.4rem;height:64px}
.brand{display:flex;align-items:center;gap:.6ch;font-weight:800;letter-spacing:-.02em;color:var(--text);font-size:1.12rem}
.brand:hover{text-decoration:none}
.brand .mark{width:26px;height:26px;flex:0 0 auto}
.nav__links{display:flex;gap:1.35rem;margin-left:auto;align-items:center}
.nav__links a{color:var(--text-soft);font-size:.96rem;font-weight:550}
.nav__links a:hover{color:var(--text);text-decoration:none}
.nav__cta{margin-left:.4rem}
@media (max-width:820px){.nav__links a:not(.nav__cta){display:none}}

/* ---- hero ---- */
.hero{background-color:var(--hero-bg);background-image:url('/assets/hero-bg.svg');
  background-size:100% 100%;background-position:center;background-repeat:no-repeat;
  color:var(--hero-text);position:relative;overflow:hidden;border-bottom:1px solid var(--border)}
/* left-dark scrim keeps the headline razor-legible over the illustration */
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;z-index:0;
  background:linear-gradient(90deg,rgba(5,7,11,.92) 0%,rgba(5,7,11,.74) 28%,rgba(5,7,11,.34) 52%,rgba(5,7,11,0) 76%)}
@media (max-width:860px){
  .hero{background-size:cover;background-position:top center}
  .hero::before{background:linear-gradient(180deg,rgba(5,7,11,.5) 0%,rgba(5,7,11,.28) 42%,rgba(5,7,11,.78) 100%)}
}
.hero__grid{display:none}
.hero .wrap{position:relative;z-index:1;padding-block:clamp(3.5rem,9vw,6rem)}
.hero h1{color:#fff}
.hero .lead{color:var(--hero-soft);max-width:60ch}
.hero__cta{margin-top:2rem}
.hero__note{margin-top:1rem;font-family:var(--font-mono);font-size:.8rem;color:var(--hero-soft);letter-spacing:.02em}

/* stat / trust strip */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-top:3rem}
.stats div{background:var(--bg-elev);padding:1.3rem 1.2rem}
.stats .num{font-family:var(--font-mono);font-size:1.75rem;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}
.stats .lbl{font-size:.82rem;color:var(--text-faint);margin-top:.15rem}
@media (max-width:720px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ---- feature grid ---- */
.grid{display:grid;gap:1.1rem}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.grid--3,.grid--4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.grid--2,.grid--3,.grid--4{grid-template-columns:1fr}}

.card{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);
  padding:1.5rem;box-shadow:var(--shadow-sm);transition:border-color .15s,transform .15s,box-shadow .15s}
.card:hover{border-color:var(--border-strong);transform:translateY(-2px);box-shadow:var(--shadow)}
.card h3{margin-top:.4rem}
.card p{color:var(--text-soft);font-size:.98rem;margin-bottom:0}
.ico{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  background:var(--accent-tint);color:var(--accent);border:1px solid color-mix(in srgb,var(--accent) 22%,transparent)}
.ico svg{width:22px;height:22px}
.tag{display:inline-block;font-family:var(--font-mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.14em;
  color:var(--accent);background:var(--accent-tint);padding:.28rem .55rem;border-radius:6px}

/* section heading block */
.head{max-width:60ch;margin-bottom:2.6rem}
.head.center{margin-inline:auto;text-align:center}

/* how-it-works steps */
.steps{counter-reset:s;display:grid;gap:1.1rem}
.step{display:grid;grid-template-columns:auto 1fr;gap:1.1rem;align-items:start;
  background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);padding:1.4rem 1.5rem}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);
  font-family:var(--font-mono);font-weight:700;font-size:.95rem;color:var(--accent);
  background:var(--accent-tint);width:2.4rem;height:2.4rem;border-radius:8px;display:grid;place-items:center}
.step h3{margin:.15rem 0 .3rem;font-size:1.12rem}
.step p{margin:0;color:var(--text-soft);font-size:.97rem}

/* ledger visual */
.ledger{font-family:var(--font-mono);font-size:.82rem;background:var(--n-950);color:#cbd5e1;
  border-radius:var(--radius);border:1px solid #232b36;overflow:hidden;box-shadow:var(--shadow-lg)}
.ledger__bar{display:flex;gap:.5ch;padding:.7rem .9rem;border-bottom:1px solid #232b36;color:#64748b}
.ledger__bar i{width:11px;height:11px;border-radius:50%;background:#334155;display:inline-block}
.ledger__body{padding:.6rem .3rem}
.ledger__row{display:grid;grid-template-columns:1fr auto auto;gap:1rem;padding:.42rem .9rem;border-bottom:1px solid #171c24}
.ledger__row:last-child{border-bottom:0}
.ledger__row .sku{color:#8fa0b3}
.ledger__row .in{color:var(--acc)}
.ledger__row .out{color:#f2a63b}
.ledger__row .tot{color:#e2e8f0;font-variant-numeric:tabular-nums}

/* split feature rows */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.5rem,5vw,4rem);align-items:center}
.split--rev .split__media{order:2}
@media (max-width:860px){.split{grid-template-columns:1fr}.split--rev .split__media{order:0}}
.checklist{list-style:none;padding:0;margin:1.2rem 0 0;display:grid;gap:.7rem}
.checklist li{display:grid;grid-template-columns:auto 1fr;gap:.7ch;color:var(--text-soft);font-size:1rem}
.checklist svg{width:20px;height:20px;color:var(--accent);margin-top:.2rem}

/* FAQ */
.faq{display:grid;gap:.7rem;max-width:820px;margin-inline:auto}
details.qa{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.3rem 1.2rem}
details.qa summary{cursor:pointer;font-weight:650;padding:1rem 0;list-style:none;display:flex;justify-content:space-between;gap:1rem}
details.qa summary::-webkit-details-marker{display:none}
details.qa summary::after{content:"+";font-family:var(--font-mono);color:var(--accent);font-size:1.3rem;line-height:1}
details.qa[open] summary::after{content:"–"}
details.qa p{color:var(--text-soft);margin:0 0 1rem;font-size:.98rem}

/* CTA band */
.cta-band{background:var(--hero-bg);color:var(--hero-text);border-radius:calc(var(--radius) + 6px);
  padding:clamp(2.2rem,5vw,3.6rem);text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;opacity:.6;
  background:radial-gradient(50% 60% at 50% 0%,rgba(15,181,166,.22),transparent 60%)}
.cta-band > *{position:relative}
.cta-band h2{color:#fff}
.cta-band .lead{color:var(--hero-soft);margin-inline:auto}

/* blog cards */
.post{display:flex;flex-direction:column;height:100%}
.post .meta{font-family:var(--font-mono);font-size:.74rem;color:var(--text-faint);text-transform:uppercase;letter-spacing:.1em;margin-bottom:.6rem}
.post h3 a{color:var(--text)}
.post p{flex:1}
.post .more{color:var(--accent);font-weight:600;font-size:.92rem;margin-top:.6rem}

/* article body */
.article{max-width:760px;margin-inline:auto}
.article .lead{margin-bottom:2rem}
.article h2{margin-top:2.4rem;font-size:1.7rem}
.article h3{margin-top:1.8rem}
.article p,.article li{color:var(--text-soft);font-size:1.06rem;line-height:1.75}
.article ul,.article ol{padding-left:1.3rem;margin:0 0 1.2rem}
.article li{margin-bottom:.5rem}
.article blockquote{border-left:3px solid var(--accent);margin:1.6rem 0;padding:.4rem 0 .4rem 1.3rem;color:var(--text);font-size:1.12rem}
.article table{width:100%;border-collapse:collapse;margin:1.4rem 0;font-size:.96rem}
.article th,.article td{border:1px solid var(--border);padding:.65rem .85rem;text-align:left}
.article th{background:var(--bg-sunken);font-family:var(--font-mono);font-size:.82rem;letter-spacing:.03em}
.article code{font-family:var(--font-mono);background:var(--bg-sunken);padding:.12em .4em;border-radius:5px;font-size:.9em}
.breadcrumb{font-family:var(--font-mono);font-size:.78rem;color:var(--text-faint);margin-bottom:1.4rem}
.breadcrumb a{color:var(--text-faint)}

/* footer */
.footer{background:var(--bg-elev);border-top:1px solid var(--border);padding-block:3rem 2rem}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2rem}
@media (max-width:760px){.footer__grid{grid-template-columns:1fr 1fr}}
.footer h4{font-family:var(--font-mono);font-size:.74rem;text-transform:uppercase;letter-spacing:.14em;color:var(--text-faint);font-weight:600}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:.55rem}
.footer a{color:var(--text-soft);font-size:.94rem}
.footer__bottom{margin-top:2.4rem;padding-top:1.4rem;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;color:var(--text-faint);font-size:.86rem}

html.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
html.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){html.js .reveal{opacity:1;transform:none}}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.center{text-align:center}.mt-0{margin-top:0}

/* ============================================================================
   v2 — vendor-growth platform components (interactive)
   ============================================================================ */
/* pillar colour tokens */
:root{--manage:#0fb5a6;--monetise:#f2a63b;--grow:#22b07a}

/* contained hero illustration (the growth-journey art gets its own home) */
.hero{background:var(--hero-bg)!important;background-image:none!important}
.hero__art{width:100%;max-width:560px;border-radius:var(--radius);overflow:hidden;
  border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow-lg);background:#080b10}
.hero__art img,.hero__art svg{width:100%;height:auto;display:block}

/* eyebrow variants for pillars */
.eyebrow.is-manage{color:var(--manage)} .eyebrow.is-manage::before{background:var(--manage)}
.eyebrow.is-monetise{color:var(--monetise)} .eyebrow.is-monetise::before{background:var(--monetise)}
.eyebrow.is-grow{color:var(--grow)} .eyebrow.is-grow::before{background:var(--grow)}
.pill{display:inline-flex;align-items:center;gap:.5ch;font-family:var(--font-mono);font-size:.68rem;
  text-transform:uppercase;letter-spacing:.14em;padding:.26rem .6rem;border-radius:999px;font-weight:600}
.pill--manage{color:var(--manage);background:color-mix(in srgb,var(--manage) 14%,transparent)}
.pill--monetise{color:var(--monetise);background:color-mix(in srgb,var(--monetise) 14%,transparent)}
.pill--grow{color:var(--grow);background:color-mix(in srgb,var(--grow) 16%,transparent)}

/* ---- pain-point selector ---- */
.painsel{display:grid;grid-template-columns:1fr 1.15fr;gap:1.4rem;align-items:start}
@media (max-width:820px){.painsel{grid-template-columns:1fr}}
.painsel__list{display:grid;gap:.6rem}
.pain{display:flex;gap:.9rem;align-items:flex-start;width:100%;text-align:left;cursor:pointer;
  background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:1rem 1.1rem;transition:border-color .15s,background .15s,transform .12s;color:var(--text);font:inherit}
.pain:hover{border-color:var(--border-strong);transform:translateX(2px)}
.pain[aria-selected="true"]{border-color:var(--accent);background:var(--accent-tint);box-shadow:inset 3px 0 0 var(--accent)}
.pain__q{font-weight:640;font-size:1rem;line-height:1.35}
.pain__ic{flex:0 0 auto;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:var(--bg-sunken);color:var(--accent);font-size:1.1rem}
.pain__panel{position:sticky;top:84px;background:var(--bg-elev);border:1px solid var(--border);
  border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow);min-height:230px}
.pain__panel h3{margin-top:.3rem}
.pain__panel .fix{color:var(--text-soft)}
.pain__panel[data-anim]{animation:fadeUp .4s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---- Manage/Monetise/Grow tabs ---- */
.tabs__nav{display:flex;gap:.5rem;flex-wrap:wrap;justify-content:center;margin-bottom:1.8rem}
.tabbtn{cursor:pointer;font:inherit;font-weight:640;font-size:1rem;padding:.7rem 1.3rem;border-radius:999px;
  border:1px solid var(--border-strong);background:var(--bg-elev);color:var(--text-soft);display:inline-flex;gap:.6ch;align-items:center;transition:.15s}
.tabbtn:hover{color:var(--text)}
.tabbtn[aria-selected="true"]{color:#fff;border-color:transparent}
.tabbtn[data-p="manage"][aria-selected="true"]{background:var(--manage)}
.tabbtn[data-p="monetise"][aria-selected="true"]{background:var(--monetise);color:#3a2500}
.tabbtn[data-p="grow"][aria-selected="true"]{background:var(--grow)}
.tabpanel{display:none} .tabpanel.is-active{display:block;animation:fadeUp .4s ease}

/* ---- before/after toggle ---- */
.ba{display:inline-flex;background:var(--bg-sunken);border:1px solid var(--border);border-radius:999px;padding:.25rem;margin-bottom:1.6rem}
.ba button{cursor:pointer;font:inherit;font-weight:620;font-size:.92rem;padding:.5rem 1.1rem;border-radius:999px;border:0;background:transparent;color:var(--text-soft)}
.ba button[aria-selected="true"]{background:var(--bg-elev);color:var(--text);box-shadow:var(--shadow-sm)}
.ba-panel{display:none}.ba-panel.is-active{display:block;animation:fadeUp .35s ease}
.grind li svg{color:var(--crit)} .glow li svg{color:var(--good)}

/* ---- growth calculator ---- */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem;align-items:stretch}
@media (max-width:820px){.calc{grid-template-columns:1fr}}
.calc__inputs,.calc__out{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow-sm)}
.calc__row{margin-bottom:1.3rem}
.calc__row label{display:flex;justify-content:space-between;font-weight:600;font-size:.95rem;margin-bottom:.5rem}
.calc__row output{font-family:var(--font-mono);color:var(--accent);font-variant-numeric:tabular-nums}
.calc input[type=range]{width:100%;accent-color:var(--accent);height:6px}
.calc__out{background:var(--hero-bg);color:var(--hero-text);display:flex;flex-direction:column;justify-content:center;gap:1.1rem}
.calc__big{font-family:var(--font-mono);font-size:clamp(2rem,5vw,2.9rem);font-weight:700;color:#8ff3e4;font-variant-numeric:tabular-nums;line-height:1}
.calc__metric{display:flex;justify-content:space-between;align-items:baseline;border-top:1px solid rgba(255,255,255,.08);padding-top:.9rem}
.calc__metric b{font-family:var(--font-mono);color:#fff;font-size:1.25rem}
.calc__note{font-size:.8rem;color:var(--hero-soft)}

/* ---- testimonial / quote cards ---- */
.quote{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow-sm)}
.quote p{font-size:1.05rem;color:var(--text);line-height:1.55}
.quote__who{display:flex;align-items:center;gap:.8rem;margin-top:1.1rem}
.quote__av{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-weight:700;color:#fff;background:var(--accent)}
.quote__who span{font-size:.88rem;color:var(--text-faint)}
.quote__who strong{display:block;color:var(--text);font-size:.95rem}