/* FormaKit — sitio. Estética de plano técnico: tinta azul noche, grilla fina, cotas y tipografía mono. */
:root {
  --ink: #0a0f1d;
  --ink-2: #111a2e;
  --ink-3: #1a2540;
  --paper: #0c1222;
  --paper-2: #1b2640;
  --white: #121b30;
  --text: #e9edf6;
  --text-2: #9aa6c0;
  --text-inv: #e9edf6;
  --text-inv-2: #9aa6c0;
  --line: rgba(255, 255, 255, 0.085);
  --line-inv: rgba(255, 255, 255, 0.09);
  --accent: #4d7cf5;
  --accent-2: #8fb0ff;
  --accent-soft: rgba(77, 124, 245, 0.14);
  --amber: #e7b43c;
  --radius: 14px;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Consolas, monospace;
  --wrap: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 16px/1.6 var(--font); color: var(--text); background: var(--paper); -webkit-font-smoothing: antialiased; color-scheme: dark; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); letter-spacing: -0.02em; line-height: 1.12; margin: 0; }
h1 { font-size: clamp(2.2rem, 4.6vw, 3.7rem); font-weight: 600; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 600; }
h3 { font-size: 1.12rem; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; }
.mono { font-family: var(--mono); font-size: 0.82em; letter-spacing: 0.01em; }
.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }
.narrow { width: min(820px, 100% - 32px); }
.center { text-align: center; }
.muted { color: var(--text-2); }

/* ───────── grilla de plano */
.grid-bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(122, 150, 220, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 150, 220, 0.07) 1px, transparent 1px),
    linear-gradient(rgba(122, 150, 220, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 150, 220, 0.035) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  mask-image: radial-gradient(ellipse 85% 75% at 55% 35%, #000 40%, transparent 100%);
}

/* ───────── botones */
.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 13px 22px; border-radius: 10px;
  font: 600 15px/1 var(--font); text-decoration: none; border: 1px solid transparent; cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 24px -10px rgba(77, 124, 245, 0.8); }
.btn-primary:hover { background: #3463e0; }
.btn-ghost { border-color: var(--line-inv); color: var(--text-inv); background: rgba(255, 255, 255, 0.03); }
.btn-ghost:hover { border-color: rgba(255, 255, 255, 0.28); }
.btn-light { background: rgba(255, 255, 255, 0.07); color: var(--text-inv); border-color: var(--line-inv); }
.btn-light:hover { background: rgba(255, 255, 255, 0.12); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.link { display: inline-flex; align-items: center; gap: 8px; color: var(--accent-2); font-weight: 600; text-decoration: none; }
.link svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* ───────── barra superior */
.top { position: sticky; top: 0; z-index: 50; background: rgba(10, 15, 29, 0.82); backdrop-filter: saturate(140%) blur(14px); border-bottom: 1px solid var(--line-inv); }
.top-in { display: flex; align-items: center; gap: 28px; height: 66px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text-inv); text-decoration: none; font: 600 18px/1 var(--display); letter-spacing: -0.01em; }
.brand svg { width: 28px; height: 28px; fill: none; stroke: var(--accent); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { color: var(--text-inv-2); text-decoration: none; font-size: 14.5px; font-weight: 500; transition: color .15s; }
.nav a:hover, .nav a[aria-current] { color: var(--text-inv); }
.menu { display: none; width: 40px; height: 40px; border: 1px solid var(--line-inv); background: transparent; border-radius: 10px; cursor: pointer; padding: 0; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.menu span { width: 16px; height: 1.5px; background: var(--text-inv); display: block; }

/* ───────── portada */
.hero { position: relative; overflow: hidden; background: radial-gradient(1200px 600px at 75% 10%, #16244a 0%, var(--ink) 60%); color: var(--text-inv); padding: 88px 0 96px; }
.hero-in { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: 0.14em; margin-bottom: 18px; font-size: 12.5px; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, #8fb0ff, var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { color: var(--text-inv-2); font-size: 1.12rem; margin-top: 22px; max-width: 58ch; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.facts { display: flex; flex-wrap: wrap; gap: 26px; list-style: none; padding: 0; margin: 40px 0 0; color: var(--text-inv-2); }
.facts b { color: var(--text-inv); font-weight: 500; margin-right: 6px; }

.demo { margin: 0; background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02)); border: 1px solid var(--line-inv); border-radius: 18px; box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255,255,255,0.06); overflow: hidden; }
.demo-head { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--line-inv); color: var(--text-inv-2); font-size: 12px; }
.demo-head .dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, 0.16); }
.demo-head span:last-child { margin-left: 8px; }
.iso { width: 100%; height: auto; padding: 8px 8px 0; }
.iso .face-top { fill: rgba(77, 124, 245, 0.16); }
.iso .face-l { fill: rgba(77, 124, 245, 0.08); }
.iso .face-r { fill: rgba(77, 124, 245, 0.11); }
.iso .edge { fill: none; stroke: #8fb0ff; stroke-width: 1.4; stroke-linejoin: round; }
.iso .div { fill: none; stroke: #8fb0ff; stroke-width: 1.1; opacity: .85; }
.iso .dim { stroke: var(--amber); stroke-width: 1; }
.iso .ext { stroke: rgba(231, 180, 60, 0.45); stroke-width: 0.8; stroke-dasharray: 3 3; }
.iso .dim-t { fill: var(--amber); font: 500 12px var(--mono); }
.iso .shadow { fill: rgba(0, 0, 0, 0.35); filter: blur(10px); }
.demo-params { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 22px; padding: 16px 20px 20px; border-top: 1px solid var(--line-inv); background: rgba(0, 0, 0, 0.18); }
.demo-params label { display: grid; grid-template-columns: 1fr auto; gap: 6px 10px; font-size: 13px; color: var(--text-inv-2); }
.demo-params output { color: var(--text-inv); font-size: 12px; }
.demo-params input { grid-column: 1 / -1; width: 100%; accent-color: var(--accent); height: 4px; }

/* ───────── bandas */
.band { position: relative; padding: 104px 0; }
.band-alt { background: linear-gradient(180deg, #0f172b, #0c1222); border-block: 1px solid var(--line); }
.band-alt::before { content: ''; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(122,150,220,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(122,150,220,.045) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent); }
.band-alt > .wrap { position: relative; }
.band-dark { background: var(--ink); color: var(--text-inv); overflow: hidden; }
.band-dark .kicker { color: var(--accent); }
.band-dark .sub, .band-dark .pay-note { color: var(--text-inv-2); }
.kicker { color: var(--accent-2); text-transform: uppercase; letter-spacing: 0.14em; font-size: 12px; margin-bottom: 14px; }
.sub { color: var(--text-2); font-size: 1.08rem; margin-top: 14px; max-width: 62ch; }
.center .sub { margin-inline: auto; }
.head-row { display: flex; align-items: end; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; list-style: none; padding: 0; margin: 48px 0 0; border-top: 1px solid var(--line); }
.steps li { padding: 30px 30px 0 0; position: relative; }
.steps li + li { padding-left: 30px; border-left: 1px solid var(--line); }
.step-n { display: inline-block; color: var(--accent-2); border: 1px solid rgba(77,124,245,.35); background: var(--accent-soft); border-radius: 6px; padding: 3px 8px; margin-bottom: 18px; }
.steps p { color: var(--text-2); margin-top: 10px; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 48px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.feature { background: var(--white); padding: 30px; position: relative; }
.feature-n { color: var(--text-2); display: block; margin-bottom: 26px; }
.feature p { color: var(--text-2); margin-top: 10px; font-size: 15px; }

/* ───────── herramientas */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 34px 0 28px; }
.chip { border: 1px solid var(--line); background: var(--white); color: var(--text); padding: 8px 14px; border-radius: 999px; font: 500 14px var(--font); cursor: pointer; transition: all .15s; }
.chip span { color: var(--text-2); margin-left: 4px; }
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] { background: var(--accent); color: #fff; border-color: var(--accent); }
.chip[aria-pressed="true"] span { color: rgba(255,255,255,.75); }
.tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.tool { display: flex; flex-direction: column; text-decoration: none; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .18s ease, box-shadow .18s ease, border-color .18s; }
.tool:hover { transform: translateY(-3px); box-shadow: 0 22px 44px -24px rgba(0, 0, 0, 0.8); border-color: rgba(77, 124, 245, 0.55); }
.tool[hidden] { display: none; }
.tool-img { aspect-ratio: 4 / 3; background: #1b1f22; display: block; overflow: hidden; }
.tool-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.tool:hover .tool-img img { transform: scale(1.04); }
.tool-body { display: grid; gap: 6px; padding: 16px 18px 20px; }
.tool-body b { font: 600 1.02rem var(--display); letter-spacing: -0.01em; }
.tool-body > span:last-child { color: var(--text-2); font-size: 14px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.tool-cat { color: var(--accent-2); text-transform: uppercase; letter-spacing: 0.1em; font-size: 10.5px; }

/* ───────── planes */
.plans { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; align-items: stretch; }
.plan { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 32px; border-radius: 18px; background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02)); border: 1px solid var(--line-inv); }
.plan h3 { font-size: 1.25rem; }
.plan-hl { border-color: rgba(77, 124, 245, 0.6); box-shadow: 0 0 0 1px rgba(77, 124, 245, 0.25), 0 30px 60px -30px rgba(77, 124, 245, 0.45); background: linear-gradient(180deg, rgba(77, 124, 245, 0.14), rgba(77, 124, 245, 0.03)); }
.price { margin-top: 14px; font: 600 2.4rem/1 var(--display); letter-spacing: -0.02em; color: #fff; }
.price-note { color: var(--text-inv-2); margin-bottom: 18px; }
.plan ul { list-style: none; padding: 0; margin: 4px 0 28px; display: grid; gap: 11px; }
.plan li { display: flex; gap: 10px; color: var(--text-inv); font-size: 15px; }
.plan li svg { width: 18px; height: 18px; flex: none; margin-top: 3px; fill: none; stroke: var(--accent); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.plan .btn { margin-top: auto; justify-content: center; }
.plan-club { border-style: dashed; }
.plan-club p { color: var(--text-inv-2); margin-top: 12px; font-size: 15px; }
.badge { position: absolute; top: 18px; right: 18px; font-size: 11px; color: #fff; background: var(--accent); padding: 4px 9px; border-radius: 6px; }
.badge-soon { background: transparent; border: 1px solid var(--amber); color: var(--amber); }
.pay-note { margin-top: 28px; font-size: 14.5px; }

/* ───────── preguntas y contacto */
.faq { margin-top: 36px; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 40px 22px 0; font: 600 1.06rem var(--display); position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 4px; top: 18px; font: 400 24px var(--mono); color: var(--text-2); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { padding: 0 40px 24px 0; color: var(--text-2); }
.contacts { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.contact-card { display: flex; align-items: center; gap: 14px; padding: 18px 22px; min-width: 260px; text-align: left; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); text-decoration: none; transition: border-color .15s, transform .15s; }
.contact-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.contact-card svg { width: 26px; height: 26px; fill: none; stroke: var(--accent-2); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.contact-card b { display: block; }
.contact-card span span { color: var(--text-2); font-size: 14px; }

/* ───────── documentación */
.page-head { position: relative; overflow: hidden; background: radial-gradient(900px 400px at 75% 0%, #16244a 0%, var(--ink) 65%); border-bottom: 1px solid var(--line); color: var(--text-inv); padding: 64px 0 60px; }
.page-head .lead { margin-top: 14px; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; color: var(--text-inv-2); margin-bottom: 22px; }
.crumbs a { color: var(--text-inv-2); text-decoration: none; }
.crumbs a:hover { color: var(--text-inv); }
.tool-head { position: relative; display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.tool-hero { margin: 0; border-radius: 16px; overflow: hidden; border: 1px solid var(--line-inv); box-shadow: 0 30px 70px -40px rgba(0,0,0,.8); }
.doc-layout { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 64px; align-items: start; }
.doc { min-width: 0; }
.doc h2 { margin: 44px 0 14px; }
.doc h2:first-child { margin-top: 0; }
.doc h3 { margin: 28px 0 10px; }
.doc p, .doc li { color: #c4ccdc; }
.doc ul, .doc ol { padding-left: 22px; display: grid; gap: 8px; }
.doc a { color: var(--accent-2); }
.tips li::marker { color: var(--amber); }
.gloss { display: grid; grid-template-columns: max-content 1fr; gap: 10px 20px; }
.gloss dt { font-weight: 600; }
.gloss dd { margin: 0; color: var(--text-2); }
.presets { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.preset { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; background: var(--white); display: grid; gap: 4px; }
.preset span { color: var(--text-2); font-size: 14px; }
.pgroup { margin-top: 26px; }
.pgroup h3 { display: flex; align-items: center; gap: 12px; }
.pgroup h3::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.pgroup-intro { color: var(--text-2); margin-bottom: 12px; }
.params { display: grid; gap: 10px; }
.param { background: var(--white); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; }
.param-head { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.param p { margin-top: 6px; font-size: 15px; }
.kind { color: var(--text-2); text-transform: uppercase; letter-spacing: 0.08em; font-size: 10.5px; }
.opts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.opt { font-size: 13px; padding: 3px 9px; border-radius: 6px; background: rgba(255,255,255,.06); color: var(--text-2); }
.opt-def { background: var(--accent-soft); color: var(--accent-2); font-weight: 500; }
.param-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 10px; color: var(--text-2); }
.param-meta b { color: var(--text); font-weight: 500; }
.doc-side { position: sticky; top: 90px; max-height: calc(100vh - 110px); overflow: auto; display: grid; gap: 2px; font-size: 14px; padding-right: 6px; }
.doc-side h4 { margin: 18px 0 6px; color: var(--text-2); text-transform: uppercase; letter-spacing: 0.1em; font-size: 11px; font-weight: 500; }
.doc-side h4:first-child { margin-top: 0; }
.doc-side a { text-decoration: none; color: var(--text-2); padding: 4px 10px; border-left: 2px solid transparent; }
.doc-side a:hover { color: var(--text); }
.doc-side a[aria-current] { color: var(--accent-2); border-left-color: var(--accent); background: var(--accent-soft); border-radius: 0 6px 6px 0; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 56px; }
.pager a { display: grid; gap: 4px; padding: 16px 18px; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; background: var(--white); }
.pager a:last-child { text-align: right; }
.pager a:hover { border-color: var(--accent); }
.pager span { color: var(--text-2); }

/* ───────── pie */
.foot { background: #070b16; border-top: 1px solid var(--line); color: var(--text-inv-2); padding: 72px 0 28px; }
.foot-in { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.foot-brand p { margin-top: 14px; max-width: 34ch; font-size: 14.5px; }
.foot h3 { color: var(--text-inv); font: 600 13px var(--font); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 14px; }
.foot-in a:not(.brand) { display: block; color: var(--text-inv-2); text-decoration: none; padding: 5px 0; font-size: 14.5px; }
.foot-in a:not(.brand):hover { color: var(--text-inv); }
.foot-base { display: flex; justify-content: space-between; gap: 12px; margin-top: 56px; padding-top: 22px; border-top: 1px solid var(--line-inv); font-size: 13px; }

/* ───────── responsive */
@media (max-width: 980px) {
  .hero-in, .tool-head { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr 1fr; }
  .plans { grid-template-columns: 1fr; max-width: 520px; }
  .doc-layout { grid-template-columns: 1fr; }
  .doc-side { display: none; }
  .foot-in { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav { display: none; position: absolute; top: 66px; left: 0; right: 0; flex-direction: column; gap: 0; padding: 8px 16px 16px; background: var(--ink); border-bottom: 1px solid var(--line-inv); }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--line-inv); }
  .top.open .nav { display: flex; }
  .menu { display: flex; }
  .top .btn-sm { margin-left: auto; }
  .band { padding: 72px 0; }
  .hero { padding: 56px 0 64px; }
  .steps { grid-template-columns: 1fr; }
  .steps li, .steps li + li { padding: 26px 0 0; border-left: 0; }
  .features { grid-template-columns: 1fr; }
  .demo-params { grid-template-columns: 1fr; }
  .foot-in { grid-template-columns: 1fr; }
  .pager { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

/* recuperar la clave */
.recover { display: grid; gap: 10px; margin: 0 0 24px; }
.recover label { font-weight: 600; }
.recover-row { display: flex; gap: 10px; flex-wrap: wrap; }
.recover-row input { flex: 1 1 240px; min-width: 0; padding: 12px 14px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--white); color: inherit; font: inherit; }
.recover-msg { min-height: 1.4em; margin: 0; }
.recover-msg.ok { color: #3fb67a; }
.recover-msg.err { color: #e5624f; }