/* =========================================================
   julio.xentris.tech — estilos
   Dirección: placa técnica de equipo de refrigeración.
   Azul acero + naranja de señalización. Barlow Condensed
   para titulares, Barlow para texto, IBM Plex Mono para
   etiquetas de datos.
   ========================================================= */
:root {
  --ink: #0e1b2b;
  --steel: #1f3347;
  --frost: #eef3f6;
  --panel: #ffffff;
  --line: #c9d5dd;
  --mute: #5b6b78;
  --signal: #f0641e;
  --signal-ink: #b9450b;
  --ok: #1a8a5a;

  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --body: "Barlow", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", "Consolas", monospace;

  --wrap: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 6px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--frost);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
img { max-width: 100%; display: block; }
h1, h2, h3 { margin: 0; font-family: var(--display); line-height: 1.02; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 3px; }

.wrap { width: min(var(--wrap), 100% - 2 * var(--gutter)); margin-inline: auto; }
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal-ink);
  margin: 0 0 14px;
  display: flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--signal); }
section { padding: clamp(56px, 8vw, 104px) 0; }
section h2 { font-size: clamp(34px, 5vw, 54px); font-weight: 700; text-transform: uppercase; margin-bottom: 18px; }
.lead { font-size: 19px; color: var(--steel); max-width: 62ch; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--display); font-weight: 600; font-size: 19px; letter-spacing: 0.02em; text-transform: uppercase;
  padding: 13px 22px; border-radius: var(--radius); text-decoration: none; border: 2px solid transparent;
  cursor: pointer; transition: transform .15s ease, background .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-signal { background: var(--signal); color: #fff; }
.btn-signal:hover { background: var(--signal-ink); }
.btn-ink { background: var(--ink); color: #fff; }
.btn-ink:hover { background: var(--steel); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: #fff; }
.btn svg { width: 20px; height: 20px; }

/* ---------- Header ---------- */
.hdr {
  position: sticky; top: 0; z-index: 40;
  background: rgba(238, 243, 246, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.hdr.scrolled { border-color: var(--line); box-shadow: 0 6px 24px -18px rgba(14, 27, 43, .4); }
.hdr .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-family: var(--display); font-weight: 700; font-size: 20px; text-transform: uppercase; letter-spacing: 0.02em; }
.brand-mark { width: 30px; height: 30px; border-radius: 4px; background: var(--ink); color: #fff; display: grid; place-items: center; font-size: 14px; font-family: var(--mono); }
.nav { display: flex; gap: 22px; }
.nav a { text-decoration: none; font-weight: 500; font-size: 15px; color: var(--steel); }
.nav a:hover { color: var(--signal-ink); }
.hdr .btn { padding: 9px 14px; font-size: 16px; }
@media (max-width: 760px) { .nav { display: none; } }

/* ---------- Hero ---------- */
.hero { padding: clamp(40px, 7vw, 90px) 0 clamp(48px, 7vw, 96px); overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.hero h1 {
  font-size: clamp(56px, 9.5vw, 128px);
  font-weight: 700; text-transform: uppercase; line-height: .9;
}
.hero h1 span { display: block; }
.hero h1 .thin { font-weight: 400; color: var(--steel); }
.hero .role { font-family: var(--mono); font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--signal-ink); margin: 0 0 18px; }
.hero .lead { margin-top: 22px; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.avail { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12.5px; color: var(--steel); margin-top: 18px; }
.avail i { width: 9px; height: 9px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px rgba(26, 138, 90, .18); }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } }

/* ---------- Placa técnica (firma del sitio) ---------- */
.plate {
  position: relative;
  background: linear-gradient(160deg, #f7fafc 0%, #e3eaef 60%, #d5dfe6 100%);
  border: 1.5px solid #9fb0bd;
  border-radius: 8px;
  padding: 26px 26px 22px;
  box-shadow:
    inset 0 1px 0 #fff,
    inset 0 -1px 0 rgba(14, 27, 43, .12),
    0 30px 50px -30px rgba(14, 27, 43, .45);
  font-family: var(--mono);
}
.plate::before, .plate::after,
.plate .screw-b::before, .plate .screw-b::after {
  content: ""; position: absolute; width: 11px; height: 11px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff, #93a4b2 60%, #5d6f7d);
  box-shadow: inset 0 0 0 1px rgba(14, 27, 43, .35);
}
.plate::before { top: 9px; left: 9px; } .plate::after { top: 9px; right: 9px; }
.plate .screw-b::before { bottom: 9px; left: 9px; } .plate .screw-b::after { bottom: 9px; right: 9px; }
.plate-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-bottom: 14px; border-bottom: 1.5px solid #9fb0bd; }
.plate-head .who { display: flex; align-items: center; gap: 14px; }
.plate-head img { width: 64px; height: 64px; border-radius: 4px; object-fit: cover; border: 1.5px solid #9fb0bd; }
.plate-head strong { display: block; font-family: var(--display); font-size: 22px; text-transform: uppercase; letter-spacing: .02em; line-height: 1; }
.plate-head small { font-size: 11.5px; color: var(--mute); letter-spacing: .08em; text-transform: uppercase; }
.plate-tag { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--signal-ink); border: 1.5px solid var(--signal); padding: 5px 8px; border-radius: 3px; white-space: nowrap; }
.plate-grid { display: grid; grid-template-columns: 1fr 1fr; }
.plate-grid div { padding: 11px 0 10px; border-bottom: 1px dashed #aebcc7; }
.plate-grid div:nth-child(odd) { padding-right: 14px; border-right: 1px dashed #aebcc7; }
.plate-grid div:nth-child(even) { padding-left: 14px; }
.plate-grid div:nth-last-child(-n+2) { border-bottom: 0; }
.plate-grid dt { font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--mute); margin-bottom: 3px; }
.plate-grid dd { margin: 0; font-family: var(--display); font-size: 20px; font-weight: 600; text-transform: uppercase; letter-spacing: .01em; line-height: 1.05; }
.plate-grid dd.ok::before { content: "✓ "; color: var(--ok); }
.plate-foot { margin-top: 14px; padding-top: 10px; border-top: 1.5px solid #9fb0bd; font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--mute); display: flex; justify-content: space-between; gap: 10px; }
@media (max-width: 420px) {
  .plate { padding: 22px 18px 18px; }
  .plate-head { flex-direction: column; align-items: flex-start; }
}

/* ---------- Servicios ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 34px; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid-3 { grid-template-columns: 1fr; } }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 22px 22px; position: relative;
  border-top: 3px solid var(--ink);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 24px 40px -30px rgba(14, 27, 43, .5); }
.card.main { border-top-color: var(--signal); }
.card .ic { width: 38px; height: 38px; color: var(--signal-ink); margin-bottom: 14px; }
.card .ic svg { width: 38px; height: 38px; }
.card h3 { font-size: 26px; text-transform: uppercase; font-weight: 700; margin-bottom: 8px; }
.card p { color: var(--steel); font-size: 15.5px; margin: 0; }
.card .tag { position: absolute; top: 14px; right: 14px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--signal-ink); }

/* ---------- Trayectoria ---------- */
.tl { margin-top: 30px; border-top: 1px solid var(--line); }
.tl li { display: grid; grid-template-columns: 180px 1fr; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.tl .when { font-family: var(--mono); font-size: 13px; letter-spacing: .06em; color: var(--mute); padding-top: 4px; }
.tl .when b { display: block; color: var(--ink); font-weight: 500; }
.tl h3 { font-size: 26px; text-transform: uppercase; font-weight: 700; }
.tl .where { font-weight: 600; color: var(--steel); font-size: 15.5px; margin: 2px 0 8px; }
.tl p { color: var(--steel); font-size: 15.5px; margin: 0; max-width: 60ch; }
.tl .now { display: inline-block; font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: #fff; background: var(--ok); padding: 3px 7px; border-radius: 3px; margin-left: 8px; vertical-align: middle; }
@media (max-width: 620px) { .tl li { grid-template-columns: 1fr; gap: 6px; } }

/* ---------- Formación ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 30px; align-items: start; }
@media (max-width: 800px) { .split { grid-template-columns: 1fr; } }
.certs li { display: grid; grid-template-columns: 74px 1fr; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.certs .yr { font-family: var(--mono); font-size: 13px; color: var(--mute); }
.certs b { display: block; font-size: 16.5px; }
.certs span { color: var(--steel); font-size: 14.5px; }
.note {
  background: var(--panel); border: 1px solid var(--line); border-left: 4px solid var(--ink);
  border-radius: var(--radius); padding: 20px 22px;
}
.note h3 { font-size: 24px; text-transform: uppercase; margin-bottom: 8px; }
.note p { color: var(--steel); font-size: 15.5px; margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chips span { font-family: var(--mono); font-size: 12px; letter-spacing: .04em; background: var(--frost); border: 1px solid var(--line); padding: 5px 9px; border-radius: 3px; }

/* ---------- Contacto ---------- */
.contact { background: var(--ink); color: #fff; }
.contact .eyebrow { color: #ffb48a; } .contact .eyebrow::before { background: #ffb48a; }
.contact h2 { color: #fff; }
.contact .lead { color: #c5d1da; }
.contact .cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.contact .btn-ghost { color: #fff; border-color: #fff; }
.contact .btn-ghost:hover { background: #fff; color: var(--ink); }
.contact .meta { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 26px; font-family: var(--mono); font-size: 13.5px; color: #c5d1da; }
.contact .meta a { color: #fff; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.3); }
.contact .meta a:hover { border-color: #fff; }

/* ---------- Footer ---------- */
.ftr { padding: 22px 0 90px; font-size: 13.5px; color: var(--mute); }
.ftr .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }
.ftr a { color: var(--steel); }

/* ---------- Aparición ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ---------- Asistente ---------- */
#ai-fab {
  position: fixed; right: 18px; bottom: 18px; z-index: 50;
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--ink); color: #fff; border: 0; border-radius: 999px;
  padding: 12px 18px; font-family: var(--display); font-size: 17px; font-weight: 600; letter-spacing: .02em; text-transform: uppercase;
  box-shadow: 0 16px 30px -12px rgba(14, 27, 43, .6); cursor: pointer;
}
#ai-fab:hover { background: var(--steel); }
#ai-panel {
  position: fixed; right: 18px; bottom: 78px; z-index: 50;
  width: min(380px, calc(100vw - 36px)); max-height: min(560px, calc(100vh - 110px));
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 30px 60px -20px rgba(14, 27, 43, .5);
  display: none; flex-direction: column; overflow: hidden;
}
#ai-panel.open { display: flex; }
.chat-head { background: var(--ink); color: #fff; padding: 12px 14px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.chat-head b { font-family: var(--display); font-size: 18px; text-transform: uppercase; letter-spacing: .02em; display: block; }
.chat-head small { font-family: var(--mono); font-size: 11px; color: #c5d1da; }
.chat-head button { background: transparent; border: 0; color: #fff; font-size: 20px; cursor: pointer; line-height: 1; }
.chat-body { padding: 14px; overflow-y: auto; flex: 1; display: flex; flex-direction: column; gap: 10px; background: var(--frost); }
.msg { max-width: 88%; padding: 10px 12px; border-radius: 10px; font-size: 14.5px; line-height: 1.45; }
.msg.bot { background: #fff; border: 1px solid var(--line); align-self: flex-start; border-bottom-left-radius: 3px; }
.msg.user { background: var(--ink); color: #fff; align-self: flex-end; border-bottom-right-radius: 3px; }
.msg a { color: var(--signal-ink); }
.msg.user a { color: #ffb48a; }
.sugs { display: flex; gap: 6px; padding: 10px 12px 0; overflow-x: auto; background: #fff; border-top: 1px solid var(--line); }
.sug { flex: 0 0 auto; background: var(--frost); border: 1px solid var(--line); border-radius: 999px; padding: 6px 11px; font-size: 12.5px; cursor: pointer; font-family: var(--body); }
.sug:hover { border-color: var(--signal); color: var(--signal-ink); }
.chat-in { display: flex; gap: 8px; padding: 10px 12px 12px; background: #fff; }
.chat-in input { flex: 1; border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; font: inherit; font-size: 14.5px; }
.chat-in button { background: var(--signal); color: #fff; border: 0; border-radius: 6px; width: 44px; font-size: 18px; cursor: pointer; }
.chat-in button:hover { background: var(--signal-ink); }
@media print { #ai-fab, #ai-panel, .hdr { display: none !important; } }