/* ═══ Advanced Solutions for Technological Systems ═══ */
:root {
  --bg: #0a0e1a;
  --bg2: #101527;
  --panel: #141b31;
  --line: rgba(255,255,255,.08);
  --txt: #e8ecf5;
  --muted: #9aa5c0;
  --cyan: #22d3ee;
  --violet: #8b5cf6;
  --green: #34d399;
  --grad: linear-gradient(90deg, var(--cyan), var(--violet));
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--txt); line-height:1.65; overflow-x:hidden;
}

/* ─── reveal on scroll ─── */
.reveal { opacity:0; transform:translateY(28px); transition:opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity:1; transform:none; }

/* ─── nav ─── */
#nav { position:fixed; inset:0 0 auto 0; z-index:50; backdrop-filter:blur(14px);
  background:rgba(10,14,26,.72); border-bottom:1px solid transparent; transition:border-color .3s; }
#nav.scrolled { border-bottom-color:var(--line); }
.nav-inner { max-width:1200px; margin:0 auto; padding:.9rem 1.5rem; display:flex; align-items:center; justify-content:space-between; }
.brand { display:flex; gap:.7rem; align-items:center; text-decoration:none; color:var(--txt); }
.brand-logo { width:42px; height:42px; border-radius:12px; background:var(--grad); display:grid; place-items:center;
  font-weight:800; color:#06101c; letter-spacing:-.5px; }
.brand-text { font-weight:700; font-size:.95rem; line-height:1.15; }
.brand-sub { display:block; font-size:.68rem; color:var(--muted); font-weight:500; }
#nav-links { display:flex; gap:1.6rem; list-style:none; }
#nav-links a { color:var(--muted); text-decoration:none; font-size:.95rem; transition:color .2s; }
#nav-links a:hover, #nav-links a.active { color:var(--txt); }
.nav-cta { padding:.45rem 1rem; border:1px solid var(--cyan); border-radius:999px; color:var(--cyan)!important; }
.nav-cta:hover { background:var(--cyan); color:#06101c!important; }
#nav-toggle { display:none; background:none; border:none; color:var(--txt); font-size:1.5rem; cursor:pointer; }

/* ─── hero ─── */
header#top { position:relative; min-height:100vh; display:grid; place-items:center; text-align:center; overflow:hidden; }
#neural-bg { position:absolute; inset:0; width:100%; height:100%; }
.hero-content { position:relative; z-index:2; padding:7rem 1.5rem 4rem; max-width:960px; }
.hero-kicker { color:var(--cyan); letter-spacing:.18em; text-transform:uppercase; font-size:.8rem; font-weight:600; }
.hero-title { font-size:clamp(2.1rem, 6vw, 4.2rem); line-height:1.1; margin:1.2rem 0; min-height:2.2em;
  background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; font-weight:800; }
.cursor { color:var(--cyan); -webkit-text-fill-color:var(--cyan); animation:blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity:0; } }
.hero-sub { color:var(--muted); font-size:clamp(1rem, 2.4vw, 1.25rem); }
.hero-sub strong { color:var(--txt); }
.hero-ctas { margin-top:2.2rem; display:flex; gap:1rem; justify-content:center; flex-wrap:wrap; }
.scroll-hint { position:absolute; bottom:1.4rem; left:50%; transform:translateX(-50%); color:var(--muted);
  animation:bob 2s ease-in-out infinite; z-index:2; }
@keyframes bob { 50% { transform:translate(-50%,8px); } }

/* ─── buttons ─── */
.btn { display:inline-block; padding:.8rem 1.7rem; border-radius:999px; font-weight:600; text-decoration:none;
  border:none; cursor:pointer; font-size:1rem; transition:transform .15s, box-shadow .15s, background .2s; }
.btn:active { transform:scale(.97); }
.btn-primary { background:var(--grad); color:#06101c; box-shadow:0 4px 24px rgba(34,211,238,.25); }
.btn-primary:hover { box-shadow:0 6px 32px rgba(139,92,246,.4); transform:translateY(-2px); }
.btn-ghost { background:transparent; color:var(--txt); border:1px solid var(--line); }
.btn-ghost:hover { border-color:var(--cyan); color:var(--cyan); }

/* ─── stats ─── */
#stats { display:grid; grid-template-columns:repeat(auto-fit,minmax(210px,1fr)); gap:1px;
  background:var(--line); border-block:1px solid var(--line); }
.stat { background:var(--bg2); padding:2.2rem 1.5rem; text-align:center; }
.stat-num { display:block; font-size:2.4rem; font-weight:800; background:var(--grad);
  -webkit-background-clip:text; background-clip:text; color:transparent; }
.stat-label { color:var(--muted); font-size:.9rem; }

/* ─── sections ─── */
.section { max-width:1200px; margin:0 auto; padding:5.5rem 1.5rem; }
.section-title { font-size:clamp(1.8rem,4vw,2.6rem); text-align:center; font-weight:800; }
.section-title::after { content:""; display:block; width:64px; height:4px; border-radius:2px;
  background:var(--grad); margin:.7rem auto 0; }
.section-sub { text-align:center; color:var(--muted); margin:.9rem auto 3rem; max-width:640px; }

/* ─── service cards ─── */
.cards { display:grid; grid-template-columns:repeat(auto-fit,minmax(320px,1fr)); gap:1.4rem; perspective:1200px; }
.card { background:var(--panel); border:1px solid var(--line); border-radius:18px; padding:2rem;
  transition:box-shadow .3s, border-color .3s; transform-style:preserve-3d; will-change:transform; }
.card:hover { border-color:rgba(34,211,238,.45); box-shadow:0 18px 50px rgba(0,0,0,.45); }
.card-icon { font-size:2rem; width:60px; height:60px; border-radius:14px; display:grid; place-items:center;
  background:rgba(34,211,238,.1); border:1px solid rgba(34,211,238,.25); margin-bottom:1.1rem; }
.card h3 { margin-bottom:.6rem; font-size:1.25rem; }
.card p { color:var(--muted); font-size:.95rem; }
.card ul { margin-top:1rem; list-style:none; }
.card li { padding:.3rem 0 .3rem 1.5rem; position:relative; font-size:.92rem; color:var(--txt); }
.card li::before { content:"▸"; position:absolute; left:0; color:var(--cyan); }

/* ─── demos ─── */
#demos { max-width:1100px; }
.tabs { display:flex; gap:.6rem; justify-content:center; flex-wrap:wrap; margin-bottom:1.8rem; }
.tab { background:var(--panel); border:1px solid var(--line); color:var(--muted); padding:.65rem 1.3rem;
  border-radius:999px; cursor:pointer; font-size:.95rem; transition:all .2s; }
.tab:hover { color:var(--txt); }
.tab.active { background:var(--grad); color:#06101c; font-weight:700; border-color:transparent; }
.tab-panel { display:none; animation:fadeIn .4s ease; }
.tab-panel.active { display:block; }
@keyframes fadeIn { from { opacity:0; transform:translateY(10px);} to { opacity:1; transform:none;} }
.demo-controls { text-align:center; margin-top:1.2rem; }
.demo-note { color:var(--muted); font-size:.85rem; margin-top:.7rem; }

/* terminal */
.terminal { background:#0b1020; border:1px solid var(--line); border-radius:14px; overflow:hidden;
  box-shadow:0 20px 60px rgba(0,0,0,.5); }
.terminal-bar { display:flex; align-items:center; gap:.45rem; padding:.6rem .9rem; background:#131a30; border-bottom:1px solid var(--line); }
.t-dot { width:11px; height:11px; border-radius:50%; }
.t-dot.red { background:#f87171; } .t-dot.yellow { background:#fbbf24; } .t-dot.green { background:#34d399; }
.terminal-title { margin-left:.6rem; color:var(--muted); font-size:.8rem; }
#terminal-out { padding:1.1rem 1.2rem; min-height:340px; max-height:340px; overflow-y:auto; font-family:"SF Mono",Consolas,Menlo,monospace;
  font-size:.86rem; line-height:1.55; color:#c8e6c9; white-space:pre-wrap; }
#terminal-out .ok { color:var(--green); } #terminal-out .warn { color:#fbbf24; } #terminal-out .bad { color:#f87171; }
#terminal-out .dim { color:#64748b; } #terminal-out .cyan { color:var(--cyan); }

/* chat */
.chat-box { background:var(--panel); border:1px solid var(--line); border-radius:14px; padding:1.2rem;
  min-height:300px; max-height:380px; overflow-y:auto; display:flex; flex-direction:column; gap:.8rem; }
.chat-msg { max-width:82%; padding:.75rem 1rem; border-radius:14px; font-size:.94rem; animation:fadeIn .3s; }
.chat-msg.bot { background:#1b2542; border:1px solid var(--line); align-self:flex-start; border-bottom-left-radius:4px; }
.chat-msg.user { background:var(--grad); color:#06101c; align-self:flex-end; border-bottom-right-radius:4px; font-weight:500; }
.chat-suggestions { display:flex; gap:.5rem; flex-wrap:wrap; margin:1rem 0; }
.chip { background:none; border:1px solid var(--line); color:var(--muted); border-radius:999px;
  padding:.4rem .95rem; font-size:.85rem; cursor:pointer; transition:all .2s; }
.chip:hover { border-color:var(--cyan); color:var(--cyan); }
.chat-form { display:flex; gap:.6rem; }
.chat-form input { flex:1; background:var(--panel); border:1px solid var(--line); border-radius:999px;
  padding:.8rem 1.2rem; color:var(--txt); font-size:1rem; outline:none; }
.chat-form input:focus { border-color:var(--cyan); }

/* ml demo */
.ml-wrap { display:grid; grid-template-columns:1.6fr 1fr; gap:1.6rem; align-items:center; }
#ml-canvas { width:100%; background:#0b1020; border:1px solid var(--line); border-radius:14px; }
.ml-side h3 { margin-bottom:.6rem; }
.ml-side p { color:var(--muted); font-size:.92rem; }
.ml-metrics { display:flex; gap:1.2rem; margin:1.1rem 0; font-family:Consolas,monospace; font-size:.9rem; }
.ml-metrics div { background:var(--panel); border:1px solid var(--line); border-radius:10px; padding:.5rem .9rem; }
.ml-metrics span { color:var(--cyan); font-weight:700; }
.ml-side .btn { margin-right:.5rem; margin-top:.3rem; }

/* ─── cases ─── */
.cases { display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:1.3rem; }
.case { background:var(--panel); border:1px solid var(--line); border-radius:16px; padding:1.7rem;
  position:relative; overflow:hidden; transition:transform .25s, border-color .25s; }
.case:hover { transform:translateY(-5px); border-color:rgba(139,92,246,.5); }
.case::before { content:""; position:absolute; inset:0 auto 0 0; width:4px; background:var(--grad); }
.case-tag { display:inline-block; font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; font-weight:700;
  color:var(--cyan); background:rgba(34,211,238,.1); border:1px solid rgba(34,211,238,.3);
  padding:.25rem .7rem; border-radius:999px; margin-bottom:.9rem; }
.case h3 { font-size:1.1rem; margin-bottom:.5rem; }
.case p { color:var(--muted); font-size:.92rem; }

/* ─── timeline ─── */
.timeline { display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:1.4rem; margin-top:1rem; }
.step { text-align:center; padding:2rem 1.2rem; background:var(--panel); border:1px solid var(--line); border-radius:16px; }
.step-num { display:inline-grid; place-items:center; width:52px; height:52px; border-radius:50%;
  background:var(--grad); color:#06101c; font-weight:800; font-size:1.3rem; margin-bottom:1rem; }
.step h3 { margin-bottom:.4rem; }
.step p { color:var(--muted); font-size:.92rem; }

/* ─── contact ─── */
.contact-box { text-align:center; background:linear-gradient(160deg, var(--panel), #17203d);
  border:1px solid var(--line); border-radius:24px; padding:4rem 1.5rem; }
.contact-actions { margin:1.6rem 0 1rem; }
.contact-small { color:var(--muted); font-size:.85rem; }

footer { border-top:1px solid var(--line); text-align:center; padding:2rem 1.5rem; color:var(--muted); font-size:.88rem; }

/* ─── responsive ─── */
@media (max-width:860px) {
  #nav-toggle { display:block; }
  #nav-links { position:fixed; top:64px; right:0; left:0; flex-direction:column; background:rgba(10,14,26,.97);
    padding:1.4rem; gap:1.1rem; border-bottom:1px solid var(--line); transform:translateY(-140%); transition:transform .3s; }
  #nav-links.open { transform:none; }
  .ml-wrap { grid-template-columns:1fr; }
}

/* ─── banner LLMs ─── */
.llm-banner { background:linear-gradient(160deg, #131c38, #1a1440); border:1px solid rgba(139,92,246,.3);
  border-radius:24px; padding:3.5rem 2rem; }
.llm-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr)); gap:1.4rem; margin-top:1rem; }
.llm-block { background:rgba(10,14,26,.55); border:1px solid var(--line); border-radius:16px; padding:1.6rem;
  transition:transform .25s, border-color .25s; }
.llm-block:hover { transform:translateY(-4px); border-color:rgba(34,211,238,.5); }
.llm-block h3 { font-size:1.08rem; margin-bottom:.55rem; }
.llm-block p { color:var(--muted); font-size:.92rem; }
.llm-block strong { color:var(--txt); }

/* ─── FAQ ─── */
.faq-list { max-width:820px; margin:0 auto; }
.faq-list details { background:var(--panel); border:1px solid var(--line); border-radius:14px;
  margin-bottom:.8rem; overflow:hidden; }
.faq-list summary { cursor:pointer; padding:1.1rem 1.4rem; font-weight:600; list-style:none; position:relative; }
.faq-list summary::-webkit-details-marker { display:none; }
.faq-list summary::after { content:"+"; position:absolute; right:1.2rem; top:50%; transform:translateY(-50%);
  color:var(--cyan); font-size:1.3rem; transition:transform .2s; }
.faq-list details[open] summary::after { transform:translateY(-50%) rotate(45deg); }
.faq-list details[open] summary { color:var(--cyan); }
.faq-list details p { padding:0 1.4rem 1.2rem; color:var(--muted); font-size:.94rem; }
.faq-list a { color:var(--cyan); }

/* ─── enlaces de casos/guías ─── */
.case-link { display:inline-block; margin-top:.9rem; color:var(--cyan); font-weight:600; font-size:.92rem;
  text-decoration:none; }
.case-link:hover { text-decoration:underline; }
.footer-links { margin-top:.5rem; font-size:.85rem; }
.footer-links a { color:var(--muted); }
.footer-links a:hover { color:var(--cyan); }

/* ─── páginas de guía ─── */
.guide-top { padding:1.2rem 1.5rem; border-bottom:1px solid var(--line); background:rgba(10,14,26,.9);
  position:sticky; top:0; z-index:10; backdrop-filter:blur(10px); }
.guide-top a { color:var(--cyan); text-decoration:none; font-weight:600; }
.article { max-width:760px; margin:0 auto; padding:3.5rem 1.5rem 5rem; }
.article h1 { font-size:clamp(1.7rem,4.5vw,2.5rem); line-height:1.2; margin-bottom:.6rem; }
.article .article-meta { color:var(--muted); font-size:.88rem; margin-bottom:2rem; }
.article h2 { color:var(--cyan); font-size:1.35rem; margin:2.2rem 0 .7rem; }
.article h3 { margin:1.5rem 0 .5rem; font-size:1.1rem; }
.article p { color:#c3cbdf; margin-bottom:1rem; }
.article ul, .article ol { color:#c3cbdf; margin:0 0 1rem 1.4rem; }
.article li { margin-bottom:.4rem; }
.article strong { color:var(--txt); }
.article a { color:var(--cyan); }
.article .callout { background:var(--panel); border-left:4px solid var(--cyan); border-radius:0 12px 12px 0;
  padding:1.1rem 1.3rem; margin:1.4rem 0; }
.article table { width:100%; border-collapse:collapse; margin:1.2rem 0; font-size:.92rem; }
.article th, .article td { border:1px solid var(--line); padding:.6rem .8rem; text-align:left; }
.article th { background:var(--panel); color:var(--cyan); }
.article td { color:#c3cbdf; }

/* ─── formulario de contacto ─── */
.contact-form { max-width:640px; margin:0 auto 1.2rem; text-align:left; }
.contact-form input, .contact-form textarea {
  width:100%; background:var(--bg); border:1px solid var(--line); border-radius:12px;
  padding:.85rem 1.1rem; color:var(--txt); font-size:1rem; font-family:inherit;
  margin-bottom:.9rem; outline:none; transition:border-color .2s; }
.contact-form input:focus, .contact-form textarea:focus { border-color:var(--cyan); }
.contact-form textarea { resize:vertical; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:.9rem; }
.hp { position:absolute !important; left:-9999px !important; height:0; padding:0; border:none; }
.form-human { display:flex; align-items:center; gap:.8rem; margin-bottom:1.1rem; color:var(--muted); font-size:.95rem; }
.form-human strong { color:var(--cyan); }
.form-human input { width:90px; margin-bottom:0; }
#form-submit { width:100%; }
#form-status { text-align:center; margin-top:.9rem; min-height:1.4em; font-weight:600; }
#form-status.ok { color:var(--green); }
#form-status.err { color:#f87171; }
@media (max-width:560px) { .form-row { grid-template-columns:1fr; gap:0; } }