/* Inversify AI — elegant ink-on-paper with SHARP edges
   - System fonts only
   - NO rounding anywhere (border-radius: 0)
   - Motion: reveals, subtle grid drift, panel sheen, button wipe
*/

:root{
  --bg:#ffffff;
  --text:#07110b;
  --muted:#3f5247;
  --muted-2:#66776d;

  --line:rgba(7,17,11,.10);
  --line-strong:rgba(7,17,11,.20);

  --green:#16a34a;
  --green-2:#22c55e;
  --green-ink:#0b6b2e;

  --card:#ffffff;
  --alt:#f5faf7;

  --shadow-sm:0 1px 0 rgba(7,17,11,.05);
  --shadow:0 18px 48px rgba(7,17,11,.10);
  --shadow-lg:0 40px 110px rgba(7,17,11,.14);

  --container:1120px;

  /* motion */
  --ease-out:cubic-bezier(.16, 1, .3, 1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  background:
    radial-gradient(1200px 700px at 14% 0%, rgba(34,197,94,.12), transparent 55%),
    radial-gradient(900px 520px at 86% 10%, rgba(22,163,74,.10), transparent 60%),
    linear-gradient(180deg, rgba(245,250,247,.78), transparent 45%),
    var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial;
  line-height:1.55;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* HARD guarantee: no rounding anywhere. */
*, *::before, *::after { border-radius: 0 !important; }

/* subtle paper noise (no external asset) */
body:before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:.05;
  mix-blend-mode:multiply;
  background-image:
    repeating-linear-gradient(0deg, rgba(0,0,0,.06) 0, rgba(0,0,0,.06) 1px, transparent 1px, transparent 3px),
    repeating-linear-gradient(90deg, rgba(0,0,0,.05) 0, rgba(0,0,0,.05) 1px, transparent 1px, transparent 4px);
  transform:translateZ(0);
}

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

.container{max-width:var(--container); margin:0 auto; padding:0 22px}

.skip{
  position:absolute; left:-999px; top:12px;
  background:var(--bg);
  border:1px solid var(--line-strong);
  padding:10px 12px;
  box-shadow:var(--shadow-sm);
}
.skip:focus{left:12px; z-index:9999}

/* Ambient animated grid behind hero (light + elegant) */
.hero{
  position:relative;
  padding:68px 0 0;
  isolation:isolate;
}
.hero:before{
  content:"";
  position:absolute;
  inset:-120px 0 auto 0;
  height:520px;
  z-index:-1;
  pointer-events:none;
  opacity:.55;
  background:
    linear-gradient(180deg, rgba(255,255,255,0), rgba(255,255,255,.92) 42%, rgba(255,255,255,0)),
    repeating-linear-gradient(90deg, rgba(7,17,11,.045) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(0deg, rgba(7,17,11,.045) 0 1px, transparent 1px 56px);
  mask-image: radial-gradient(520px 320px at 50% 46%, #000 55%, transparent 100%);
  transform: translate3d(0,0,0);
  animation:grid-drift 18s var(--ease-out) infinite alternate;
}
@keyframes grid-drift{
  from{transform:translate3d(-14px, 0, 0)}
  to{transform:translate3d(14px, -10px, 0)}
}

/* reveal system */
[data-reveal]{
  opacity:0;
  transform: translateY(14px);
  filter: blur(2px);
  transition: opacity 800ms var(--ease-out), transform 800ms var(--ease-out), filter 900ms var(--ease-out);
  will-change: transform, opacity, filter;
}
.is-revealed{opacity:1; transform:none; filter:none}

/* Topbar */
.topbar{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.72);
  backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid var(--line);
}
.topbar__inner{display:flex; align-items:center; justify-content:space-between; gap:16px; padding:14px 0}

.brand{display:flex; align-items:center; gap:10px; font-weight:850; letter-spacing:.12em}
.brand__mark{
  width:12px; height:12px;
  background:linear-gradient(135deg, var(--green), var(--green-2));
  box-shadow:
    0 0 0 6px rgba(22,163,74,.10),
    0 18px 34px rgba(22,163,74,.16);
  transition: transform 360ms var(--ease-out);
}
.brand:hover .brand__mark{transform: translateY(-1px) rotate(-10deg)}
.brand__text{font-size:13px}
.brand__ai{color:var(--green)}

.nav{display:flex; align-items:center; gap:18px}
.nav a{
  font-size:14px;
  color:var(--muted);
  padding:8px 10px;
  transition:background .15s ease, color .15s ease, transform 250ms var(--ease-out);
}
.nav a:hover{color:var(--text); background:rgba(7,17,11,.04); transform:translateY(-1px)}

.menu{display:none; border:1px solid var(--line); background:rgba(255,255,255,.86); padding:10px; box-shadow:var(--shadow-sm)}
.menu span{display:block; width:18px; height:2px; background:var(--text); margin:4px 0}

.hero__grid{display:grid; grid-template-columns: 1.12fr .88fr; gap:34px; align-items:start}
.kicker{display:flex; align-items:center; gap:10px; color:var(--muted); font-size:14px}
.dot{width:8px; height:8px; background:var(--green); box-shadow:0 0 0 6px rgba(22,163,74,.11)}

h1{margin:16px 0 12px; font-size:56px; line-height:1.01; letter-spacing:-.045em}
.accent{background:linear-gradient(90deg, var(--green), var(--green-2)); -webkit-background-clip:text; background-clip:text; color:transparent}
.lede{margin:0 0 18px; color:var(--muted); font-size:17px; max-width:64ch}

.cta{display:flex; gap:12px; flex-wrap:wrap; margin:20px 0 24px}

.btn{
  position:relative;
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px;
  font-size:14px; font-weight:750;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-sm);
  transition:transform 220ms var(--ease-out), background .15s ease, border-color .15s ease, box-shadow 220ms var(--ease-out);
  overflow:hidden;
}
.btn:before{
  content:"";
  position:absolute;
  inset:-1px;
  transform:translateX(-110%);
  background:linear-gradient(90deg, transparent, rgba(34,197,94,.20), transparent);
  transition: transform 520ms var(--ease-out);
  pointer-events:none;
}
.btn:hover:before{transform:translateX(110%)}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:3px solid rgba(34,197,94,.28); outline-offset:2px}

.btn--solid{
  background:linear-gradient(180deg, #0b1610, #07110b);
  color:#fff;
  border-color:rgba(7,17,11,.60);
  box-shadow:0 18px 38px rgba(7,17,11,.18);
}
.btn--solid:hover{background:linear-gradient(180deg, #0f1c14, #08130c); box-shadow:0 22px 52px rgba(7,17,11,.22)}

.btn--ghost{background:transparent; color:var(--text)}
.btn--ghost:hover{border-color:rgba(7,17,11,.35); background:rgba(7,17,11,.03)}

.btn--line{background:rgba(22,163,74,.06); color:var(--green-ink); border-color:rgba(22,163,74,.28)}
.btn--line:hover{border-color:rgba(22,163,74,.55); background:rgba(22,163,74,.10)}

.hero__meta{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:12px; margin-top:12px}
.meta{
  border:1px solid var(--line);
  padding:12px 12px;
  background:rgba(255,255,255,.78);
  backdrop-filter: blur(10px);
  box-shadow:var(--shadow-sm);
}
.meta__label{font-size:12px; color:var(--muted-2)}
.meta__value{font-size:14px; font-weight:750; margin-top:4px}

/* Panel */
.hero__panel{position:relative; perspective: 1000px}
.panel{
  --rx:0deg;
  --ry:0deg;
  --mx:50%;
  --my:35%;

  position:relative;
  border:1px solid var(--line);
  overflow:hidden;
  background:rgba(255,255,255,.82);
  backdrop-filter: blur(12px);
  box-shadow:var(--shadow);
  transform: rotateX(var(--rx)) rotateY(var(--ry));
  transform-style:preserve-3d;
  transition: transform 400ms var(--ease-out), box-shadow 400ms var(--ease-out);
}
.hero__panel:hover .panel{box-shadow:var(--shadow-lg)}

/* moving highlight + sheen */
.panel:before{
  content:"";
  position:absolute;
  inset:-1px;
  pointer-events:none;
  background:
    radial-gradient(360px 260px at var(--mx) var(--my), rgba(34,197,94,.20), transparent 62%),
    linear-gradient(120deg, transparent 0%, rgba(255,255,255,.52) 20%, transparent 44%);
  opacity:.85;
  mix-blend-mode:multiply;
  transform:translateX(var(--sheen, -40%));
  transition: transform 700ms var(--ease-out);
}
.hero__panel:hover .panel:before{transform:translateX(40%)}

.panel__top{
  position:relative;
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg, rgba(245,250,247,.95), rgba(245,250,247,.60));
}
.panel__title{font-size:12px; letter-spacing:.18em; color:var(--muted); font-weight:900}
.panel__lights span{
  display:inline-block; width:10px; height:10px;
  margin-left:6px;
  border:1px solid rgba(7,17,11,.16);
  background:rgba(255,255,255,.6);
}
.panel__lights span:nth-child(3){background:rgba(22,163,74,.22); border-color:rgba(22,163,74,.40)}
.panel__body{position:relative; padding:14px}
.row{display:grid; grid-template-columns: 140px 1fr; gap:12px; padding:10px 0}
.tag{font-size:12px; color:var(--muted-2)}
.mono{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size:12.5px; color:var(--text)}
.divider{height:1px; background:var(--line); margin:8px 0}
.panel__footer{display:flex; gap:8px; flex-wrap:wrap; margin-top:12px}
.pill{font-size:12px; color:var(--green-ink); border:1px solid rgba(22,163,74,.22); background:rgba(22,163,74,.08); padding:6px 10px}

/* Ticker */
.ticker{
  margin-top:48px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:rgba(245,250,247,.68);
  overflow:hidden;
}
.ticker__track{display:flex; gap:28px; padding:12px 0; white-space:nowrap; color:rgba(7,17,11,.58); font-weight:950; letter-spacing:.24em; font-size:12px; animation:ticker 16s linear infinite}
@keyframes ticker{from{transform:translateX(0)} to{transform:translateX(-33.333%)}}

/* Sections */
.section{padding:76px 0}
.section--alt{background:rgba(245,250,247,.66); border-top:1px solid var(--line); border-bottom:1px solid var(--line)}
.section__head{max-width:72ch}
.section__head h2{margin:0 0 10px; font-size:32px; letter-spacing:-.03em}
.section__head p{margin:0; color:var(--muted)}

.split{display:grid; grid-template-columns: 1.1fr .9fr; gap:24px; align-items:start; margin-top:18px}

.callout{
  border:1px solid var(--line);
  background:rgba(255,255,255,.82);
  backdrop-filter: blur(10px);
  padding:16px;
  box-shadow:var(--shadow-sm);
  transition:transform 260ms var(--ease-out), box-shadow 260ms var(--ease-out), border-color 260ms var(--ease-out);
}
.callout:hover{transform:translateY(-2px); box-shadow:var(--shadow); border-color:rgba(7,17,11,.16)}
.callout__title{font-weight:950; margin-bottom:10px; letter-spacing:-.02em}
.kv{display:flex; justify-content:space-between; gap:12px; padding:9px 0; border-top:1px solid var(--line)}
.kv:first-of-type{border-top:none}
.kv span:first-child{color:var(--muted); font-size:13px}

/* Cards & grids */
.grid{display:grid; gap:16px; margin-top:22px}
.grid--3{grid-template-columns:repeat(3, minmax(0,1fr))}
.grid--2{grid-template-columns:repeat(2, minmax(0,1fr))}

.card{
  border:1px solid var(--line);
  background:rgba(255,255,255,.84);
  backdrop-filter: blur(10px);
  padding:18px;
  box-shadow:var(--shadow-sm);
  transition:transform 260ms var(--ease-out), box-shadow 260ms var(--ease-out), border-color 260ms var(--ease-out);
}
.card:hover{transform:translateY(-3px); box-shadow:var(--shadow); border-color:rgba(7,17,11,.16)}
.card__top{display:flex; align-items:baseline; justify-content:space-between; gap:12px; margin-bottom:10px}
.card__id{font-weight:950; color:rgba(22,163,74,.95); letter-spacing:.10em; font-size:12px}
.card h3{margin:0; font-size:18px; letter-spacing:-.015em}
.card p{margin:10px 0; color:var(--muted)}

.bullets{margin:12px 0 0; padding-left:18px; color:var(--muted)}
.bullets li{margin:6px 0}

.card--wide{grid-column:1 / -1}
.muted{color:var(--muted)}

/* Responsive */
@media (max-width: 920px){
  h1{font-size:44px}
  .hero{padding-top:46px}
  .hero__grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .grid--3{grid-template-columns:1fr}
  .grid--2{grid-template-columns:1fr}
  .row{grid-template-columns: 120px 1fr}
  .nav{display:none}
  .menu{display:inline-flex}

  /* minimal dropdown when toggled */
  .nav.nav--open{
    display:flex;
    position:absolute;
    right:22px;
    top:62px;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:10px;
    background:rgba(255,255,255,.92);
    border:1px solid var(--line);
    box-shadow:var(--shadow);
  }
  .nav.nav--open a{padding:10px 12px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .ticker__track{animation:none}
  .btn, .card, .callout, .brand__mark{transition:none}
  [data-reveal]{opacity:1; transform:none; filter:none; transition:none}
  .panel{transform:none}
  .hero:before{animation:none}
}