:root{
  --bg:#F2F5F4;
  --surface:#FFFFFF;
  --surface-alt:#E9EDEC;
  --text-primary:#14181B;
  --text-secondary:#565F66;
  --border:#DCE2E0;
  --grid-line:rgba(61,99,221,0.06);
  --safe:#1E8E5A;
  --warn:#B45F06;
  --accent-solid:#3D63DD;
  --accent-text:#3D63DD;
  --shadow:0 1px 2px rgba(20,24,27,0.04), 0 8px 24px rgba(20,24,27,0.06);
  --radius:14px;
  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;
}
html[data-theme="dark"]{
  --bg:#12161A;
  --surface:#191F25;
  --surface-alt:#0E1216;
  --text-primary:#ECEFF1;
  --text-secondary:#93A0AA;
  --border:#262E36;
  --grid-line:rgba(255,255,255,0.045);
  --safe:#34D399;
  --warn:#F5A623;
  --shadow:0 1px 2px rgba(0,0,0,0.3), 0 12px 32px rgba(0,0,0,0.35);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth; scroll-padding-top:84px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-primary);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background .25s ease, color .25s ease;
}
img,svg{display:block;}
a{color:inherit;}
button{font:inherit; color:inherit; cursor:pointer;}
:focus-visible{outline:2px solid var(--accent-text); outline-offset:2px; border-radius:4px;}

.container{max-width:1120px; margin:0 auto; padding-inline:clamp(20px,5vw,32px);}
.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--accent-text);
  font-weight:500;
}
h1,h2,h3{font-family:var(--font-display); font-weight:600; margin:0; letter-spacing:-0.01em;}
p{margin:0; color:var(--text-secondary);}

section{padding-block:clamp(56px,8vw,104px);}
.section-head{max-width:640px; margin-bottom:clamp(32px,5vw,52px);}
.section-head h2{font-size:clamp(1.7rem,3vw,2.35rem); margin-top:10px; margin-bottom:12px;}
.section-head p{font-size:1.02rem;}
.section-alt{background:var(--surface-alt);}

/* ---------- Header ---------- */
header{
  position:sticky; top:0; z-index:40;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex; align-items:center; justify-content:space-between; gap:16px; padding-block:14px;}
.brand{display:flex; align-items:center; gap:9px; font-family:var(--font-display); font-weight:600; font-size:1.08rem; text-decoration:none;}
.brand-mark{width:30px; height:30px; border-radius:8px; border:1.5px solid var(--accent-text); display:flex; align-items:center; justify-content:center; color:var(--accent-text); flex:none;}
.brand-mark svg{width:16px; height:16px;}
.brand-mark-sm{width:26px; height:26px;}
.brand-mark-sm svg{width:14px; height:14px;}
.nav-links{display:flex; align-items:center; gap:28px; list-style:none; margin:0; padding:0;}
.nav-links a{
  font-size:.92rem; text-decoration:none; color:var(--text-secondary);
  transition:color .15s ease;
}
.nav-links a:hover{color:var(--text-primary);}
.nav-right{display:flex; align-items:center; gap:10px; position:relative;}

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  border-radius:999px; padding:10px 20px; font-size:.9rem; font-weight:600;
  border:1.5px solid transparent; text-decoration:none; white-space:nowrap;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--accent-solid); color:#fff; box-shadow:var(--shadow);}
.btn-ghost{background:transparent; color:var(--text-primary); border-color:var(--border);}
.btn-ghost:hover{border-color:var(--accent-text); color:var(--accent-text);}
.btn-sm{padding:8px 14px; font-size:.82rem;}

.icon-btn{
  display:flex; align-items:center; gap:7px;
  background:var(--surface); border:1.5px solid var(--border); border-radius:999px;
  padding:8px 12px; font-size:.82rem; font-weight:500; color:var(--text-primary);
}
.icon-btn:hover{border-color:var(--accent-text); color:var(--accent-text);}
.icon-btn svg{width:16px; height:16px; stroke:currentColor; fill:none; stroke-width:1.7;}
.icon-btn .lbl{display:inline;}
@media (max-width:640px){ .icon-btn .lbl{display:none;} }

/* ---------- Settings popover ---------- */
.popover{
  position:absolute; top:calc(100% + 10px); right:0; width:280px;
  background:var(--surface); border:1px solid var(--border); border-radius:12px;
  box-shadow:var(--shadow); padding:18px; z-index:50;
  opacity:0; visibility:hidden; transform:translateY(-6px);
  transition:opacity .15s ease, transform .15s ease, visibility .15s;
}
.popover.open{opacity:1; visibility:visible; transform:translateY(0);}
.pop-group{margin-bottom:16px;}
.pop-group:last-child{margin-bottom:0;}
.pop-title{font-family:var(--font-mono); font-size:.68rem; letter-spacing:.08em; text-transform:uppercase; color:var(--text-secondary); margin-bottom:9px;}
.lang-grid{display:grid; grid-template-columns:1fr 1fr; gap:6px;}
.opt-btn{
  text-align:left; padding:7px 10px; border-radius:8px; border:1px solid var(--border);
  background:transparent; font-size:.83rem; color:var(--text-primary);
}
.opt-btn:hover{border-color:var(--accent-text);}
.opt-btn.active{background:color-mix(in srgb, var(--accent-solid) 12%, transparent); border-color:var(--accent-text); color:var(--accent-text); font-weight:600;}
.theme-row{display:flex; gap:6px;}
.theme-row .opt-btn{flex:1; text-align:center;}
.swatch-row{display:flex; gap:10px; align-items:center;}
.swatch{
  width:22px; height:22px; border-radius:50%; border:2px solid transparent; padding:0;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,0.08);
}
.swatch.active{border-color:var(--text-primary);}

/* ---------- Hero ---------- */
.hero{
  background-image:linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size:34px 34px;
  padding-top:clamp(64px,9vw,112px);
}
.hero-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center;}
@media (max-width:920px){ .hero-grid{grid-template-columns:1fr; gap:44px;} }
.hero h1{font-size:clamp(2.15rem,4.4vw,3.4rem); line-height:1.12; margin-top:14px;}
.hero-sub{font-size:1.06rem; margin-top:18px; max-width:52ch;}
.hero-cta{display:flex; flex-wrap:wrap; gap:12px; margin-top:30px;}
.hero-annot{
  display:flex; flex-wrap:wrap; gap:8px 22px; margin-top:34px;
  font-family:var(--font-mono); font-size:.74rem; color:var(--text-secondary);
}
.hero-annot span{display:flex; align-items:center; gap:7px;}
.hero-annot span::before{content:''; width:5px; height:5px; border-radius:50%; background:var(--accent-text); flex:none;}

/* ---------- Flow diagram (signature element) ---------- */
.flow-card{
  background:var(--surface); border:1px solid var(--border); border-radius:18px;
  padding:26px 20px; box-shadow:var(--shadow); position:relative;
}
.flow-card::before{
  content:'DIAGRAMA · PIPELINE LOCAL';
  position:absolute; top:-11px; left:20px; background:var(--surface);
  padding:0 8px; font-family:var(--font-mono); font-size:.62rem; letter-spacing:.1em;
  color:var(--text-secondary);
}
.flow-diagram{display:flex; align-items:center; gap:0; padding-top:6px;}
.flow-node{
  flex:0 0 auto; width:82px; height:82px; border-radius:12px; border:1.5px solid var(--border);
  background:var(--bg); display:flex; flex-direction:column; align-items:center; justify-content:center; gap:8px;
}
.flow-node svg{width:22px; height:22px; stroke:var(--accent-text); fill:none; stroke-width:1.5; stroke-linecap:round; stroke-linejoin:round;}
.flow-node.answer{border-color:var(--accent-text);}
.flow-connector{
  flex:1 1 auto; height:1.6px; min-width:14px; margin-inline:2px;
  background-image:repeating-linear-gradient(90deg, var(--accent-text) 0 6px, transparent 6px 13px);
  animation:flowmove .9s linear infinite;
}
@keyframes flowmove{ to{ background-position:-19px 0; } }
.flow-labels{display:flex; margin-top:12px;}
.flow-labels span{
  flex:1; text-align:center; font-family:var(--font-mono); font-size:.62rem;
  text-transform:uppercase; letter-spacing:.04em; color:var(--text-secondary);
}
@media (max-width:520px){
  .flow-diagram{flex-direction:column; align-items:stretch;}
  .flow-node{width:100%; height:56px; flex-direction:row;}
  .flow-connector{width:1.6px; height:16px; min-width:0; margin:0 auto;
    background-image:repeating-linear-gradient(180deg, var(--accent-text) 0 6px, transparent 6px 13px);
    animation:flowmove-v .9s linear infinite;}
  @keyframes flowmove-v{ to{ background-position:0 -19px; } }
  .flow-labels{flex-direction:column; gap:8px;}
  .flow-labels span{display:none;}
}
@media (prefers-reduced-motion:reduce){ .flow-connector{animation:none;} }

/* ---------- Screenshots ---------- */
.shots-grid{display:grid; grid-template-columns:1fr 1fr; gap:20px;}
@media (max-width:760px){ .shots-grid{grid-template-columns:1fr;} }
.shot{
  margin:0; position:relative; aspect-ratio:16/10; overflow:hidden; cursor:zoom-in;
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  box-shadow:var(--shadow); transition:transform .18s ease, box-shadow .18s ease;
}
.shot.featured{grid-column:1 / -1; aspect-ratio:21/9;}
@media (max-width:760px){ .shot.featured{aspect-ratio:16/10;} }
.shot:hover{transform:translateY(-3px); box-shadow:0 2px 4px rgba(20,24,27,0.05), 0 16px 40px rgba(20,24,27,0.12);}
.shot img{width:100%; height:100%; object-fit:cover; transition:transform .35s ease;}
.shot:hover img{transform:scale(1.02);}

/* ---------- Lightbox ---------- */
.lightbox{
  position:fixed; inset:0; z-index:100; display:flex; align-items:center; justify-content:center;
  background:rgba(10,12,14,0.9); backdrop-filter:blur(4px);
  opacity:0; visibility:hidden; transition:opacity .2s ease, visibility .2s;
}
.lightbox.open{opacity:1; visibility:visible;}
.lightbox img{
  max-width:min(92vw, 1400px); max-height:88vh; border-radius:10px;
  box-shadow:0 24px 64px rgba(0,0,0,0.5);
}
.lightbox-close{
  position:absolute; top:16px; right:16px; width:42px; height:42px; border-radius:50%;
  border:1px solid rgba(255,255,255,0.25); background:transparent; color:#fff;
  font-size:1.5rem; line-height:1; display:flex; align-items:center; justify-content:center;
}
.lightbox-close:hover{background:rgba(255,255,255,0.1);}

/* ---------- Features ---------- */
.feature-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
@media (max-width:880px){ .feature-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:600px){ .feature-grid{grid-template-columns:1fr;} }
.feature-card{
  position:relative; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:24px 22px; transition:transform .18s ease, box-shadow .18s ease;
}
.feature-card:hover{transform:translateY(-3px); box-shadow:var(--shadow);}
.feature-card::before, .feature-card::after{
  content:''; position:absolute; width:12px; height:12px; border:1.5px solid var(--accent-text); opacity:.55;
}
.feature-card::before{top:-1px; left:-1px; border-right:none; border-bottom:none;}
.feature-card::after{bottom:-1px; right:-1px; border-left:none; border-top:none;}
.feature-icon{
  width:38px; height:38px; border-radius:9px; display:flex; align-items:center; justify-content:center;
  background:color-mix(in srgb, var(--accent-solid) 12%, transparent); margin-bottom:16px;
}
.feature-icon svg{width:19px; height:19px; stroke:var(--accent-text); fill:none; stroke-width:1.6; stroke-linecap:round; stroke-linejoin:round;}
.feature-card h3{font-size:1.02rem; margin-bottom:8px;}
.feature-card p{font-size:.9rem;}

/* ---------- How it works ---------- */
.steps-rail{display:grid; grid-template-columns:repeat(5,1fr); gap:16px; counter-reset:step;}
@media (max-width:920px){ .steps-rail{grid-template-columns:1fr 1fr;} }
@media (max-width:560px){ .steps-rail{grid-template-columns:1fr;} }
.step{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:20px 18px;
  counter-increment:step;
}
.step-num{
  font-family:var(--font-mono); font-size:.78rem; color:var(--accent-text); font-weight:600; margin-bottom:14px;
}
.step-num::before{content:"0" counter(step);}
.step h3{font-size:.96rem; margin-bottom:7px;}
.step p{font-size:.84rem;}

/* ---------- Engines ---------- */
.engine-cols{display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-bottom:22px;}
@media (max-width:760px){ .engine-cols{grid-template-columns:1fr;} }
.engine-card{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:24px;}
.engine-card.local{border-color:var(--accent-text);}
.engine-tag{
  display:inline-block; font-family:var(--font-mono); font-size:.65rem; letter-spacing:.08em; text-transform:uppercase;
  padding:4px 9px; border-radius:999px; margin-bottom:14px;
}
.engine-card.local .engine-tag{background:color-mix(in srgb, var(--accent-solid) 15%, transparent); color:var(--accent-text);}
.engine-card.cloud .engine-tag{background:var(--surface-alt); color:var(--text-secondary);}
.engine-card h3{font-size:1.15rem; margin-bottom:8px;}
.engine-card p{font-size:.9rem;}

.spec-table{width:100%; border-collapse:collapse; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); overflow:hidden;}
.spec-table th, .spec-table td{text-align:left; padding:13px 16px; font-size:.86rem; border-bottom:1px solid var(--border);}
.spec-table thead th{
  font-family:var(--font-mono); font-size:.68rem; text-transform:uppercase; letter-spacing:.06em;
  color:var(--text-secondary); background:var(--surface-alt); font-weight:500;
}
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table td:first-child{color:var(--text-secondary); font-family:var(--font-mono); font-size:.8rem;}
.engines-note{margin-top:18px; font-size:.86rem; display:flex; gap:9px; align-items:flex-start;}
.engines-note svg{width:17px; height:17px; stroke:var(--accent-text); fill:none; stroke-width:1.7; flex:none; margin-top:2px;}

/* ---------- Privacy ---------- */
.privacy-table{width:100%; border-collapse:collapse; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); overflow:hidden;}
.privacy-table th, .privacy-table td{text-align:left; padding:14px 16px; font-size:.87rem; border-bottom:1px solid var(--border);}
.privacy-table thead th{
  font-family:var(--font-mono); font-size:.68rem; text-transform:uppercase; letter-spacing:.06em;
  color:var(--text-secondary); background:var(--surface-alt); font-weight:500;
}
.privacy-table tbody tr:last-child td{border-bottom:none;}
.privacy-table td:nth-child(2){color:var(--text-secondary); font-family:var(--font-mono); font-size:.78rem;}
.tag{display:inline-flex; align-items:center; gap:6px; font-size:.82rem; font-weight:500;}
.tag::before{content:''; width:7px; height:7px; border-radius:50%;}
.tag-safe::before{background:var(--safe);}
.tag-safe{color:var(--safe);}
.tag-warn::before{background:var(--warn);}
.tag-warn{color:var(--warn);}

/* ---------- Stack ---------- */
.chip-row{display:flex; flex-wrap:wrap; gap:10px;}
.chip{
  font-family:var(--font-mono); font-size:.8rem; padding:8px 14px; border-radius:999px;
  border:1px solid var(--border); background:var(--surface); color:var(--text-secondary);
}

/* ---------- Quick start ---------- */
.start-grid{display:grid; grid-template-columns:1fr 1fr; gap:32px; align-items:start;}
@media (max-width:840px){ .start-grid{grid-template-columns:1fr;} }
.start-list{display:flex; flex-direction:column; gap:18px;}
.start-item h3{font-size:.92rem; margin-bottom:5px; font-family:var(--font-mono); letter-spacing:.02em;}
.start-item p{font-size:.85rem;}
.terminal{
  background:var(--surface-alt); border:1px solid var(--border); border-radius:var(--radius);
  overflow:hidden; box-shadow:var(--shadow);
}
.terminal-bar{display:flex; gap:6px; padding:12px 14px; border-bottom:1px solid var(--border);}
.terminal-bar span{width:9px; height:9px; border-radius:50%; background:var(--border);}
.terminal pre{
  margin:0; padding:18px 20px; font-family:var(--font-mono); font-size:.82rem; line-height:1.9;
  color:var(--text-primary); overflow-x:auto;
}
.terminal pre .c{color:var(--text-secondary);}
.terminal pre .p{color:var(--accent-text);}

/* ---------- Footer ---------- */
footer{border-top:1px solid var(--border); padding-block:40px; background:var(--surface-alt);}
.footer-grid{display:flex; justify-content:space-between; align-items:center; gap:20px; flex-wrap:wrap;}
.footer-brand{display:flex; align-items:center; gap:9px; font-family:var(--font-display); font-weight:600;}
.footer-tagline{font-size:.85rem; margin-top:6px;}
.footer-meta{font-size:.78rem; color:var(--text-secondary); max-width:420px; text-align:right;}
@media (max-width:640px){ .footer-meta{text-align:left;} }
.back-top{font-size:.8rem; color:var(--text-secondary); text-decoration:none; display:inline-flex; align-items:center; gap:6px; margin-top:10px;}
.back-top:hover{color:var(--accent-text);}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0; transform:translateY(14px); transition:opacity .55s ease, transform .55s ease;}
.reveal.in-view{opacity:1; transform:translateY(0);}
@media (prefers-reduced-motion:reduce){ .reveal{opacity:1; transform:none; transition:none;} }