/* Krepling — design system from tokens.json / DESIGN.md
   Single weight 400, one chromatic accent, flat surfaces, no UI shadows. */

:root{
  --violet:#b154f9;
  --ink:#000000;
  --paper:#ffffff;
  --mist:#f1f1f1;
  --charcoal:#171717;
  --steel:#6c6b6b;
  --fog:#b3b3b3;
  --hairline:rgba(0,0,0,.10);
  --max:1200px;
  --gap:80px;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:30px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter',ui-sans-serif,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  font-weight:400;
  font-size:16px;
  line-height:1.5;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:inherit;text-decoration:none}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:400}
button{font:inherit;color:inherit}

.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:12px 16px;border:1px solid var(--ink);z-index:100}
.skip:focus{left:12px;top:12px}

/* ---------- type ---------- */
h1{font-size:clamp(40px,4.5vw,64px);line-height:1.1;letter-spacing:-.01em;max-width:12ch}
h2{font-size:clamp(40px,6.7vw,96px);line-height:1.1;letter-spacing:-.01em}
h3{font-size:clamp(20px,2vw,24px);line-height:1.3}
.eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--steel);margin-bottom:24px}
.lede{font-size:16px;color:var(--steel);max-width:62ch;margin:16px auto 0}
.center{text-align:center;width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:49px;padding:14px 16px;border-radius:10px;
  font-size:16px;line-height:1;letter-spacing:0;white-space:nowrap;
  border:1.5px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-fill{background:var(--violet);color:#fff}
.btn-fill:hover{background:#9d3fe8}
.btn-outline{background:#fff;border-color:var(--violet);color:var(--violet)}
.btn-outline:hover{background:var(--violet);color:#fff}
.ghost{padding:10px 4px;color:var(--ink)}
.ghost:hover{color:var(--violet)}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:50;background:transparent;transition:background .2s ease,border-color .2s ease;border-bottom:1px solid transparent}
.site-header.is-scrolled{background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(10px);border-bottom-color:var(--hairline)}
.header-inner{display:flex;align-items:center;gap:32px;min-height:76px}
.wordmark{font-size:17px;letter-spacing:.22em}
.wordmark.light{color:#fff}
.nav{display:flex;gap:28px;margin-left:12px}
.nav a{font-size:16px;color:var(--ink)}
.nav a:hover{color:var(--violet)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.menu-btn{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--hairline);border-radius:8px;background:#fff;position:relative}
.menu-btn span{position:absolute;left:11px;right:11px;height:1.5px;background:var(--ink);top:17px}
.menu-btn span+span{top:25px}
.mobile-nav{display:none;padding:8px 24px 24px;border-top:1px solid var(--hairline);background:#fff}
.mobile-nav a{display:block;padding:14px 0;border-bottom:1px solid var(--hairline)}
.mobile-nav .btn{margin-top:16px;display:inline-flex}

/* ---------- hero ---------- */
.hero{position:relative;min-height:min(125vh,1125px);overflow:hidden;background:#f7f6f4;display:flex}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 42%}
.hero-shade{position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(255,255,255,.70) 0%,rgba(255,255,255,0) 24%,rgba(255,255,255,0) 58%,rgba(241,241,241,.88) 100%),
  linear-gradient(90deg,rgba(255,255,255,.55) 0%,rgba(255,255,255,0) 52%)}
.hero-content{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:space-between;gap:48px;padding-top:176px;padding-bottom:clamp(88px,27vh,245px);min-height:min(125vh,1125px)}
.hero-kicker{margin-left:auto;text-align:right;max-width:340px;font-size:clamp(20px,2.2vw,32px);line-height:1.3;color:var(--ink)}
.hero-bottom{display:flex;justify-content:space-between;align-items:flex-end;gap:48px}
.hero-bottom h1{max-width:600px}
.hero-side{max-width:455px;text-align:right;display:flex;flex-direction:column;align-items:flex-end;gap:20px}
.hero-sub{font-size:16px;color:#1c1c1c;max-width:34ch}
.hero .wrap{max-width:none;padding-left:20px;padding-right:20px}

/* ---------- sections ---------- */
.section{padding:var(--gap) 0}
.section-tint{background:var(--mist)}
.section-head{display:flex;flex-direction:column;align-items:center;gap:16px;margin-bottom:20px;text-align:center}
.icon-tile{width:40px;height:40px;border-radius:8px;border:1px solid var(--hairline);display:grid;place-items:center;flex:0 0 auto}
.icon-tile svg{width:22px;height:22px}
.section-head h2{max-width:20ch}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.card{background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:14px;padding:32px}
.card h3{margin-bottom:8px}
.card p{color:var(--steel);font-size:16px}
.card.tall{padding:28px;min-height:220px}
.card-soon{border-color:rgba(177,84,249,.45);position:relative;padding-top:28px}
.pill{position:absolute;top:16px;right:16px;display:inline-block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--violet);border:1px solid rgba(177,84,249,.45);border-radius:999px;padding:5px 9px}

/* feature cards variant */
.feature-cards .card{background:var(--paper)}

/* ---------- tabs ---------- */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:32px 0 20px}
.tab{background:#fff;border:1px solid var(--fog);border-radius:var(--r-sm);padding:12px 18px;cursor:pointer;min-height:44px}
.tab:hover{border-color:var(--ink)}
.tab.is-active{border:1.5px solid var(--violet);background:rgba(177,84,249,.06)}
.tab-panel[hidden]{display:none}
.workflow-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background:#fff;border:1px solid var(--fog);border-radius:var(--r-md);padding:32px}
.panel-title{font-size:clamp(26px,3vw,36px);line-height:1.15;margin-bottom:12px}
.panel-copy{color:var(--steel)}
.checklist{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:10px}
.checklist li{position:relative;padding-left:26px;color:var(--steel);font-size:16px}
.checklist li::before{content:"";position:absolute;left:0;top:5px;width:14px;height:8px;border-left:1.5px solid var(--violet);border-bottom:1.5px solid var(--violet);transform:rotate(-45deg)}

/* browser mock */
.browser-mock{border:1px solid var(--hairline);border-radius:10px;overflow:hidden;background:#fff}
.browser-bar{display:flex;gap:5px;padding:10px;border-bottom:1px solid var(--hairline);background:var(--mist)}
.browser-bar span{width:8px;height:8px;border-radius:50%;background:var(--fog)}
.browser-body{padding:14px}
.mock-nav{height:10px;width:42%;background:#e9e9e9;border-radius:4px;margin-bottom:16px}
.mock-hero{height:86px;border-radius:6px;background:linear-gradient(120deg,#efe4ff,#ffd9cd 60%,#d9fff1);margin-bottom:12px}
.mock-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.mock-row div{height:52px;border:1px solid var(--hairline);border-radius:6px}

/* dashboard mock */
.dash-mock{border:1px solid var(--hairline);border-radius:10px;padding:16px;background:#fff}
.dash-top{display:flex;gap:6px;margin-bottom:16px}
.dash-top span{height:8px;border-radius:4px;background:#ececec;flex:1}
.dash-chart{display:flex;align-items:flex-end;gap:8px;height:140px;padding-bottom:6px;border-bottom:1px solid var(--hairline)}
.dash-chart i{flex:1;height:var(--h);background:linear-gradient(180deg,#c99cff,#b154f9);border-radius:4px 4px 0 0;opacity:.85}
.dash-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:14px}
.dash-stats div{text-align:center;border:1px solid var(--hairline);border-radius:6px;padding:10px 6px}
.dash-stats b{display:block;font-size:20px;font-weight:400}
.dash-stats small{color:var(--steel);font-size:11px}

/* ---------- essentials ---------- */
.essentials{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}
.essentials .btn{margin-top:24px}
.chip-grid{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.chip-grid li{border:1px solid var(--fog);border-radius:999px;padding:10px 14px;font-size:14px;color:var(--ink);background:#fff}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px}
.faq{margin-top:40px;border-top:1px solid var(--ink)}
.faq details{border-bottom:1px solid var(--ink)}
.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:24px;justify-content:space-between;padding:22px 0;font-size:18px}
.faq summary::-webkit-details-marker{display:none}
.chev{width:12px;height:12px;border-right:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);transform:rotate(45deg);transition:transform .2s ease;flex:0 0 auto}
details[open] .chev{transform:rotate(-135deg)}
.faq-body{padding:0 0 22px;color:var(--steel);font-size:16px;max-width:70ch}

/* ---------- CTA ---------- */
.cta{padding:96px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);padding:56px 0}
.cta h2{max-width:20ch}

/* ---------- footer ---------- */
.site-footer{background:#171717;color:#fff;padding:96px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{color:#b9b9b9;font-size:15px;margin-top:16px;max-width:34ch}
.site-footer h4{font-size:14px;letter-spacing:.12em;text-transform:uppercase;color:#8f8f8f;margin-bottom:18px}
.site-footer a:not(.wordmark){display:block;padding:7px 0;color:#e9e9e9;font-size:15px}
.site-footer a:not(.wordmark):hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16);color:#8f8f8f;font-size:13px}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .nav,.header-actions{display:none}
  .menu-btn{display:block}
  .mobile-nav:not([hidden]){display:block}
  .hero{min-height:78vh}
  .hero-content{min-height:78vh;padding-top:112px;padding-bottom:40px;gap:24px;justify-content:flex-end}
  .hero-kicker{margin-left:0;text-align:left;max-width:20ch}
  .hero-bottom{flex-direction:column;align-items:flex-start;gap:24px}
  .hero-side{text-align:left;align-items:flex-start;max-width:100%}
  .grid-3,.workflow-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;padding:24px}
  .essentials{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .wrap{padding:0 18px}
  .hero{min-height:88vh}
  .hero-content{min-height:88vh;padding-top:104px}
  .hero-video{object-position:56% 40%}
  .hero-shade{background:linear-gradient(180deg,rgba(255,255,255,.78) 0%,rgba(255,255,255,.38) 34%,rgba(255,255,255,.25) 52%,rgba(241,241,241,.94) 100%)}
  .footer-grid{grid-template-columns:1fr}
  .hero-sub{font-size:17px}
  .tabs{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
  .tabs::-webkit-scrollbar{display:none}
  .tab{flex:0 0 auto;min-height:44px}
  .btn{min-height:48px}
}
@media (prefers-reduced-motion:reduce){
  .orb,.cube,.ring{animation:none}
  html{scroll-behavior:auto}
}