/* =========================================================
   Lavin · Landing B2B de maquila (destino de Google Ads)
   ========================================================= */

:root {
  --navy: #0a3478;
  --ink: #16202e;
  --ink-soft: #4a5568;
  --ivory: #faf8f4;
  --sand: #f1ece4;
  --mist: #e8eef2;
  --champagne: #b5966a;
  --line: rgba(22, 32, 46, .12);
  --white: #fff;
  --error: #c0392b;

  --serif: "Marcellus", Georgia, serif;
  --sans: "Jost", system-ui, sans-serif;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; font-family: var(--sans); font-weight: 300; font-size: 16px; line-height: 1.7; color: var(--ink-soft); background: var(--ivory); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
button, input, select, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; color: var(--ink); line-height: 1.15; margin: 0 0 .5em; }
h1 { font-size: clamp(2.1rem, 3.8vw, 3.3rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); }
h3 { font-size: 1.2rem; }
h1 em, h2 em { font-style: normal; color: var(--champagne); }
p { margin: 0 0 1em; }
[hidden] { display: none !important; }

.wrap { width: min(1160px, 100% - 48px); margin-inline: auto; }
.eyebrow { display: flex; align-items: center; gap: 14px; margin-bottom: 1.1em; font-size: .72rem; font-weight: 500; letter-spacing: .3em; text-transform: uppercase; color: var(--champagne); }
.eyebrow::before { content: ""; width: 32px; height: 1px; background: currentColor; }
section { padding: 96px 0; }
.head { max-width: 640px; margin-bottom: 50px; }
.head--center { margin-inline: auto; text-align: center; }
.head--center .eyebrow { justify-content: center; }
.icon { width: 40px; height: 40px; margin-bottom: 22px; fill: none; stroke: var(--champagne); stroke-width: 1.3; stroke-linecap: round; stroke-linejoin: round; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 15px 30px; border: 0;
  background: var(--ink); color: var(--white);
  font-size: .76rem; font-weight: 500; letter-spacing: .2em; text-transform: uppercase;
  cursor: pointer;
  transition: background .3s var(--ease), color .3s var(--ease);
}
.btn:hover { background: var(--navy); }
.btn--sm { padding: 11px 20px; }
.btn--full { width: 100%; }
.btn--light { background: var(--white); color: var(--ink); }
.btn--light:hover { background: var(--champagne); color: var(--white); }

/* ---------- Header ---------- */
.header { position: sticky; top: 0; z-index: 20; background: rgba(250, 248, 244, .92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header__in { display: flex; align-items: center; gap: 24px; padding: 14px 0; }
.logo img { width: 150px; }
.header__tag { font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-soft); }
.header .btn { margin-left: auto; }

/* ---------- Hero + formulario ---------- */
.hero { padding: 64px 0 90px; background: linear-gradient(180deg, var(--ivory), var(--mist)); }
.hero__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: start; }
.hero__copy { padding-top: 20px; }
.lead { font-size: 1.12rem; max-width: 32em; }
.ticks { list-style: none; margin: 28px 0 0; padding: 0; }
.ticks li { position: relative; padding: 11px 0 11px 30px; border-bottom: 1px solid var(--line); }
.ticks li::before { content: ""; position: absolute; left: 4px; top: 20px; width: 7px; height: 7px; transform: rotate(45deg); background: var(--champagne); }

.form { position: relative; padding: 36px 32px 30px; background: var(--white); border: 1px solid var(--line); box-shadow: 0 50px 90px -50px rgba(22, 32, 46, .45); }
.form h2 { font-size: 1.8rem; margin-bottom: 4px; }
.form__sub { font-size: .9rem; margin-bottom: 22px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: grid; gap: 6px; margin-bottom: 14px; }
.field label { font-size: .7rem; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--ink); }
.field label span { text-transform: none; letter-spacing: 0; font-weight: 300; color: var(--ink-soft); }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 0;
  background: var(--ivory); color: var(--ink);
  font-size: .95rem;
  transition: border-color .2s, background .2s;
}
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--navy); background: var(--white); }
.field.is-invalid input, .field.is-invalid select { border-color: var(--error); }
.check { display: flex; align-items: center; gap: 10px; margin: 4px 0 18px; font-size: .85rem; cursor: pointer; }
.check input { width: 17px; height: 17px; accent-color: var(--ink); }
.check.is-invalid { color: var(--error); }
.form__error { margin: 12px 0 0; font-size: .85rem; color: var(--error); text-align: center; }
.form__done { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; padding: 36px; text-align: center; background: var(--white); animation: fade .5s var(--ease); }
@keyframes fade { from { opacity: 0; } }
.done-ic { display: grid; place-items: center; width: 64px; height: 64px; margin-bottom: 18px; border-radius: 50%; background: var(--ink); color: var(--white); font-size: 1.6rem; }
.demo-note { margin-top: 10px; padding: 12px 14px; font-size: .8rem; background: var(--sand); }

/* ---------- Confianza ---------- */
.trust { padding: 0; background: var(--ink); color: rgba(255, 255, 255, .7); }
.trust__grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust__grid div { display: grid; padding: 34px 22px; border-right: 1px solid rgba(255, 255, 255, .1); text-align: center; }
.trust__grid div:last-child { border-right: 0; }
.trust strong { font-family: var(--serif); font-weight: 400; font-size: 2rem; color: var(--white); line-height: 1.2; }
.trust span { font-size: .78rem; letter-spacing: .08em; }

/* ---------- Servicios ---------- */
.services { background: var(--white); }
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.svc { padding: 34px 26px; border: 1px solid var(--line); background: var(--ivory); transition: transform .5s var(--ease), border-color .5s var(--ease); }
.svc:hover { transform: translateY(-5px); border-color: var(--champagne); }
.svc p { margin: 0; font-size: .92rem; }

/* ---------- Laboratorio ---------- */
.lab__grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: center; }
.lab__img img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 240px 240px 0 0; }
.why { list-style: none; margin: 26px 0 0; padding: 0; display: grid; gap: 4px; }
.why li { display: grid; padding: 14px 0; border-bottom: 1px solid var(--line); }
.why strong { font-weight: 500; color: var(--ink); }
.why span { font-size: .92rem; }

/* ---------- Categorías ---------- */
.cats { background: var(--mist); }
.cat-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.cat-grid li { padding: 22px 20px; background: var(--white); color: var(--ink); font-size: .95rem; position: relative; padding-left: 40px; }
.cat-grid li::before { content: ""; position: absolute; left: 20px; top: 33px; width: 7px; height: 7px; transform: rotate(45deg); background: var(--champagne); }

/* ---------- Proceso ---------- */
.process { background: var(--white); }
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; position: relative; }
.steps::before { content: ""; position: absolute; top: 21px; left: 0; right: 0; height: 1px; background: var(--line); }
.steps span { position: relative; display: grid; place-content: center; width: 42px; height: 42px; margin-bottom: 20px; border-radius: 50%; border: 1px solid var(--champagne); background: var(--white); color: var(--champagne); font-size: .76rem; }
.steps h3 { font-size: 1.12rem; }
.steps p { margin: 0; font-size: .9rem; }

/* ---------- FAQ ---------- */
.faq__wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; }
.faq__list details { border-bottom: 1px solid var(--line); }
.faq__list summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 20px; padding: 20px 0; font-size: 1.05rem; color: var(--ink); }
.faq__list summary::-webkit-details-marker { display: none; }
.faq__list summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--champagne); transition: transform .3s var(--ease); }
.faq__list details[open] summary::after { transform: rotate(45deg); }
.faq__list p { margin: 0 0 20px; }

/* ---------- CTA ---------- */
.cta { background: var(--ink); color: rgba(255, 255, 255, .75); text-align: center; }
.cta h2 { color: var(--white); }
.cta__in { max-width: 680px; }

.footer { padding: 40px 0; background: #0f1722; color: rgba(255, 255, 255, .55); font-size: .85rem; }
.footer__in { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer img { width: 130px; }
.footer p { margin: 0; }

.float-cta { display: none; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1000px) {
  .svc-grid, .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
  .steps::before { display: none; }
  .hero__grid, .lab__grid, .faq__wrap { grid-template-columns: 1fr; gap: 44px; }
  .lab__img { max-width: 420px; }
  .header__tag { display: none; }
}
@media (max-width: 640px) {
  section { padding: 70px 0; }
  .wrap { width: calc(100% - 32px); }
  .hero { padding: 40px 0 70px; }
  .row { grid-template-columns: 1fr; gap: 0; }
  .form { padding: 28px 20px 24px; }
  .trust__grid { grid-template-columns: repeat(2, 1fr); }
  .trust__grid div:nth-child(2) { border-right: 0; }
  .trust__grid div:nth-child(-n+2) { border-bottom: 1px solid rgba(255, 255, 255, .1); }
  .svc-grid, .cat-grid, .steps { grid-template-columns: 1fr; }
  .header .btn { display: none; }
  .float-cta {
    display: block; position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 30;
    padding: 15px; text-align: center;
    background: var(--ink); color: var(--white);
    font-size: .76rem; font-weight: 500; letter-spacing: .2em; text-transform: uppercase;
    box-shadow: 0 20px 40px -20px rgba(22, 32, 46, .6);
  }
  .footer { padding-bottom: 90px; }
  .float-cta { transition: opacity .3s var(--ease), transform .3s var(--ease); }
  .float-cta.is-hidden { opacity: 0; transform: translateY(20px); pointer-events: none; }
}