/* =================================================================
   SIA · Landing one-page — SIMAGEN
   Mobile-first. Vanilla CSS. Paleta de marca SIMAGEN 2024.
   ================================================================= */

:root{
  --blue-deep:#1c6fad;
  --blue:#268ed7;
  --blue-soft:#bcd8f0;
  --night-0:#04111d;
  --night-1:#061a2b;
  --night-2:#0a3d66;
  --ink:#eaf2fb;
  --ink-dim:#9fb6cc;
  --green:#10b981;
  --amber:#f59e0b;
  --light:#f6f9fc;
  --light-ink:#0e2233;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  background:var(--night-1);
  color:var(--ink);
  line-height:1.5;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
section,header,footer{position:relative}
em{font-style:normal;color:var(--blue-soft)}

/* ---------- Reveal base ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal[data-delay="1"]{transition-delay:.12s}
.reveal[data-delay="2"]{transition-delay:.24s}
.reveal[data-delay="3"]{transition-delay:.36s}
.reveal[data-delay="4"]{transition-delay:.5s}
.reveal.in{opacity:1;transform:none}

/* barra de progreso de scroll */
.scrollbar{position:fixed;top:0;left:0;height:3px;width:0;z-index:50;
  background:linear-gradient(90deg,var(--blue-deep),var(--blue));
  box-shadow:0 0 10px rgba(38,142,215,.6)}

/* =================================================================
   BLOQUE 1 — HERO
   ================================================================= */
.hero{
  position:relative;min-height:100svh;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;
  padding:70px 26px calc(78px + env(safe-area-inset-bottom));
  background:
    radial-gradient(130% 90% at 50% 6%, rgba(38,142,215,.20), transparent 58%),
    linear-gradient(180deg, var(--night-0) 0%, var(--night-1) 52%, var(--night-2) 140%);
  overflow:hidden;
}
.hero__sky{position:absolute;inset:0;z-index:0;overflow:hidden}

/* luna con halo */
.moon{
  position:absolute;top:10%;left:50%;width:58px;height:58px;border-radius:50%;
  transform:translateX(-50%);
  background:radial-gradient(circle at 38% 34%, #fffef7, #e4edf5 52%, #b7c8d8);
  box-shadow:0 0 50px 12px rgba(220,235,250,.30),0 0 130px 34px rgba(38,142,215,.16);
  animation:moonGlow 6s ease-in-out infinite;will-change:transform;
}
@keyframes moonGlow{0%,100%{filter:brightness(1)}50%{filter:brightness(1.14)}}

/* estrellas (generadas por JS) */
.stars span{position:absolute;width:2px;height:2px;border-radius:50%;background:#d4e6f5;animation:twinkle 3.5s ease-in-out infinite}
@keyframes twinkle{0%,100%{opacity:.16}50%{opacity:.85}}

/* skyline generada por JS */
.skyline{
  position:absolute;left:0;right:0;bottom:0;height:32%;
  display:flex;align-items:flex-end;gap:3px;padding:0 6px;opacity:.92;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 58%);
          mask-image:linear-gradient(180deg,transparent,#000 58%);
  will-change:transform;
}
.bld{flex:0 0 auto;background:#08263d;border-radius:3px 3px 0 0;display:grid;gap:4px;padding:7px 5px 0;align-content:start;border-top:1px solid rgba(38,142,215,.12)}
.win{width:5px;height:6px;border-radius:1px;background:rgba(120,160,190,.10)}
.win.lit{background:var(--amber);box-shadow:0 0 6px rgba(245,158,11,.7);animation:flick 5s steps(1) infinite}
.win.lit.b{background:var(--blue);box-shadow:0 0 6px rgba(38,142,215,.8)}
@keyframes flick{0%,82%,100%{opacity:1}85%{opacity:.25}88%{opacity:1}}

.hero__veil{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(4,17,29,.12) 22%,rgba(6,26,43,.5))}

.hero__content{position:relative;z-index:2;max-width:640px;display:flex;flex-direction:column;align-items:center;gap:24px}
.hero__logo{height:60px;width:auto;display:block;filter:drop-shadow(0 6px 24px rgba(0,0,0,.5))}
.hero__title{font-size:clamp(34px,8.4vw,56px);font-weight:800;line-height:1.07;letter-spacing:-.02em;text-wrap:balance}
.hero__title .line{display:block}
.hero__subtitle{font-size:clamp(15px,4vw,19px);color:var(--ink-dim);font-weight:400;line-height:1.55}
.hero__subtitle .brand{color:var(--ink);font-weight:700}
.hero__subtitle strong{color:var(--blue-soft);font-weight:700}

.hero__scroll{
  position:absolute;left:0;right:0;bottom:26px;z-index:2;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-dim);
}
.hero__arrow{width:1px;height:30px;background:linear-gradient(var(--blue),transparent);position:relative}
.hero__arrow::after{content:"";position:absolute;left:-3px;bottom:0;width:7px;height:7px;border-right:1px solid var(--blue);border-bottom:1px solid var(--blue);transform:rotate(45deg);animation:slide 1.8s ease-in-out infinite}
@keyframes slide{0%,100%{transform:rotate(45deg) translate(0,0);opacity:.4}50%{transform:rotate(45deg) translate(3px,3px);opacity:1}}

/* =================================================================
   BLOQUE 2 — LA PREGUNTA
   ================================================================= */
.ask{
  min-height:78svh;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;
  padding:80px 26px;background:var(--night-0);
}
.ask__text{
  font-size:clamp(23px,6vw,40px);font-weight:700;line-height:1.22;
  letter-spacing:-.015em;width:100%;max-width:720px;text-wrap:balance;
}
.ask__text .ch{opacity:0}
.ask__text .ch.on{opacity:1;transition:opacity .05s linear}
.caret{display:inline-block;width:3px;height:1.05em;background:var(--blue);margin-top:18px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* Bloque 2B — la respuesta, entrada impactante (no máquina de escribir) */
.answer{
  min-height:82svh;display:flex;align-items:center;justify-content:center;text-align:center;
  padding:80px 26px;
  background:radial-gradient(circle at 50% 50%, rgba(38,142,215,.14), transparent 62%), var(--night-0);
}
.answer__text{
  font-size:clamp(44px,13vw,96px);font-weight:800;letter-spacing:-.03em;line-height:1;
  opacity:0;transform:scale(.82);filter:blur(12px);
  transition:opacity .7s ease,transform .9s cubic-bezier(.18,.9,.2,1.08),filter .7s ease;
}
.answer.in .answer__text{opacity:1;transform:none;filter:none}
.answer__sia{color:var(--blue)}
.answer.in .answer__sia{animation:siaGlow 2.6s ease-in-out infinite .9s}
@keyframes siaGlow{0%,100%{text-shadow:0 0 26px rgba(38,142,215,.4)}50%{text-shadow:0 0 48px rgba(38,142,215,.9)}}

/* =================================================================
   BLOQUE 3 — DIFERENCIADORES
   ================================================================= */
.diff{padding:84px 20px;background:linear-gradient(180deg,var(--night-0),var(--night-1))}
.diff__inner{max-width:1040px;margin:0 auto;display:grid;gap:20px}
.card{
  background:linear-gradient(180deg,rgba(38,142,215,.07),rgba(255,255,255,.02));
  border:1px solid rgba(38,142,215,.18);border-radius:18px;
  padding:30px 26px;position:relative;overflow:hidden;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
@media(hover:hover){
  .card:hover{transform:translateY(-5px);border-color:rgba(38,142,215,.5);box-shadow:0 22px 50px rgba(0,0,0,.35)}
}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;background:radial-gradient(80% 60% at 50% 0%,rgba(38,142,215,.16),transparent 70%);opacity:.8;pointer-events:none}
.card__icon{height:60px;display:flex;align-items:center;gap:12px;margin-bottom:20px;position:relative}
.card__title{font-size:21px;font-weight:700;letter-spacing:-.01em;margin-bottom:10px}
.card__text{color:var(--ink-dim);font-size:15.5px;line-height:1.6}
.card__status{
  margin-top:18px;display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12.5px;color:var(--blue-soft);
  background:rgba(4,17,29,.5);border:1px solid rgba(38,142,215,.2);
  padding:6px 11px;border-radius:99px;
}

/* Card 1 — bandera + servidor */
.flag{width:34px;height:24px;border-radius:4px;overflow:hidden;display:inline-block;
  background:linear-gradient(180deg,#c60b1e 0 25%,#ffc400 25% 75%,#c60b1e 75%);
  box-shadow:0 2px 10px rgba(0,0,0,.3);animation:wave 4s ease-in-out infinite}
@keyframes wave{0%,100%{transform:skewX(0deg)}50%{transform:skewX(-4deg)}}
.ic-server{width:34px;height:34px;fill:none;stroke:var(--blue);stroke-width:1.6}
.dot-live{fill:var(--green);stroke:none;animation:livedot 2s ease-in-out infinite}
@keyframes livedot{0%,100%{opacity:1}50%{opacity:.3}}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(16,185,129,.6);animation:ring 2s ease-out infinite}
@keyframes ring{0%{box-shadow:0 0 0 0 rgba(16,185,129,.5)}100%{box-shadow:0 0 0 9px rgba(16,185,129,0)}}

/* Card 2 — toggle 3 posiciones */
.toggle{position:relative;width:140px;height:40px;border-radius:99px;
  background:rgba(4,17,29,.6);border:1px solid rgba(38,142,215,.25);
  display:flex;align-items:center;justify-content:space-between;padding:0 16px}
.toggle__stop{width:6px;height:6px;border-radius:50%;background:rgba(188,216,240,.3)}
.toggle__knob{position:absolute;top:50%;left:6px;width:30px;height:30px;border-radius:50%;
  background:linear-gradient(180deg,var(--blue),var(--blue-deep));
  box-shadow:0 3px 10px rgba(38,142,215,.5);transform:translateY(-50%);
  transition:left .5s cubic-bezier(.5,.05,.2,1)}
.toggle.p1 .toggle__knob{left:6px}
.toggle.p2 .toggle__knob{left:55px}
.toggle.p3 .toggle__knob{left:104px}

/* Card 3 — lock + hash */
.ic-lock{width:36px;height:36px;fill:none;stroke:var(--blue);stroke-width:1.6;stroke-linecap:round}
.hash{letter-spacing:.5px}

/* Card — escudo (cumplimiento) */
.ic-shield{width:36px;height:36px;fill:none;stroke:var(--blue);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

/* Card — consentimiento (check que se dibuja) */
.ic-consent{width:38px;height:38px;fill:none;stroke:var(--blue);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.ic-consent .ic-check{stroke:var(--green);stroke-dasharray:20;stroke-dashoffset:20;animation:drawCheck 3s ease-in-out infinite}
@keyframes drawCheck{0%{stroke-dashoffset:20}28%,72%{stroke-dashoffset:0}100%{stroke-dashoffset:20}}

/* Iconos servicios */
.ic-key,.ic-auto,.ic-search{width:36px;height:36px;fill:none;stroke:var(--blue);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.ic-search path:last-child{stroke:var(--green)}

/* =================================================================
   BLOQUE 4 — DEMO CHAT
   ================================================================= */
.demo{padding:84px 20px 96px;background:var(--night-1);text-align:center}
.demo__heading{font-size:clamp(22px,5.6vw,32px);font-weight:700;letter-spacing:-.015em;margin-bottom:34px;color:var(--ink)}
.phone{
  max-width:380px;margin:0 auto;background:#0c1622;
  border:1px solid rgba(38,142,215,.22);border-radius:34px;
  padding:14px 12px 18px;box-shadow:0 30px 80px rgba(0,0,0,.5),0 0 0 6px rgba(4,17,29,.6);
  position:relative;
}
.phone__notch{width:120px;height:6px;border-radius:99px;background:rgba(255,255,255,.12);margin:2px auto 14px}
.phone__head{display:flex;align-items:center;gap:10px;padding:0 4px 14px;border-bottom:1px solid rgba(255,255,255,.07);text-align:left}
.phone__avatar{width:38px;height:38px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#fff;
  background:linear-gradient(180deg,var(--blue),var(--blue-deep));box-shadow:0 4px 14px rgba(38,142,215,.5)}
.phone__head strong{display:block;font-size:13.5px;letter-spacing:-.01em}
.phone__head small{color:var(--green);font-size:11px;display:flex;align-items:center;gap:5px;margin-top:1px}
.online{width:6px;height:6px;border-radius:50%;background:var(--green);display:inline-block;box-shadow:0 0 6px rgba(16,185,129,.8)}
.phone__client{margin-left:auto;flex:0 0 auto;font-size:9.5px;color:var(--ink-dim);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);padding:4px 7px;border-radius:99px;white-space:nowrap}
.phone__client .vch{color:var(--green);font-weight:700}

.chat{min-height:430px;display:flex;flex-direction:column;gap:10px;padding:18px 8px 4px;text-align:left}
.msg{max-width:84%;padding:11px 14px;border-radius:18px;font-size:14.5px;line-height:1.45;
  opacity:0;transform:translateY(10px) scale(.98);transition:opacity .35s ease,transform .35s ease;position:relative}
.msg.show{opacity:1;transform:none}
.msg time{display:block;font-size:10.5px;opacity:.5;margin-top:5px;font-family:var(--mono)}
.msg--in{align-self:flex-start;background:#1b2a3a;border-bottom-left-radius:5px}
.msg--out{align-self:flex-end;background:linear-gradient(180deg,var(--blue),var(--blue-deep));border-bottom-right-radius:5px;color:#fff}
.msg--in .name{display:block;font-size:11px;font-weight:700;color:var(--blue-soft);margin-bottom:3px}

.typing{align-self:flex-start;background:#1b2a3a;border-radius:18px;border-bottom-left-radius:5px;
  padding:14px 16px;display:none;gap:4px;align-items:center}
.typing.show{display:flex}
.typing span{width:7px;height:7px;border-radius:50%;background:var(--ink-dim);animation:typ 1.2s infinite}
.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}
@keyframes typ{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-5px);opacity:1}}

.choices{align-self:flex-end;display:flex;flex-direction:column;gap:8px;width:84%;opacity:0;transform:translateY(10px);transition:.35s}
.choices.show{opacity:1;transform:none}
.choice{padding:12px 16px;border-radius:14px;font-size:14px;font-weight:600;text-align:center;cursor:pointer;border:none;font-family:inherit;transition:transform .15s ease,filter .15s ease}
.choice:active{transform:scale(.97)}
.choice--green{background:var(--green);color:#04231a}
.choice--grey{background:#22323f;color:var(--ink-dim)}
.choice--blue{background:rgba(38,142,215,.14);color:var(--blue-soft);border:1px solid rgba(38,142,215,.4)}
.choice--green.tapped{filter:brightness(1.1);box-shadow:0 0 0 2px rgba(16,185,129,.45)}
.choice--blue.tapped{background:rgba(38,142,215,.3);color:#fff;box-shadow:0 0 0 2px rgba(38,142,215,.45)}
.choice--grey.tapped{background:#33485c;color:var(--ink);box-shadow:0 0 0 2px rgba(188,216,240,.35)}
.choice.dimmed{opacity:.32}
.choice[disabled]{cursor:default}

/* sello digital al cierre de la conversación */
.seal{align-self:center;margin-top:10px;display:inline-flex;align-items:center;gap:7px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.3px;color:var(--blue-soft);
  background:rgba(38,142,215,.1);border:1px solid rgba(38,142,215,.28);
  padding:6px 12px;border-radius:99px;opacity:0;transform:translateY(6px);
  transition:opacity .5s ease,transform .5s ease}
.seal.show{opacity:1;transform:none}
.seal svg{width:13px;height:13px;fill:none;stroke:var(--green);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* =================================================================
   BLOQUE 5B — OTROS SERVICIOS
   ================================================================= */
.services{padding:84px 20px 92px;background:linear-gradient(180deg,var(--night-1),var(--night-0))}
.services__head{max-width:1040px;margin:0 auto 36px;text-align:center}
.services__title{font-size:clamp(28px,7vw,42px);font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.services__sub{margin-top:12px;color:var(--ink-dim);font-size:clamp(15px,4vw,18px)}
.services__grid{max-width:1040px;margin:0 auto;display:grid;gap:20px}

/* =================================================================
   BLOQUE 5 — QUIÉN HAY DETRÁS
   ================================================================= */
.behind{padding:96px 26px;background:var(--light);color:var(--light-ink)}
.behind__inner{max-width:640px;margin:0 auto}
.behind__title{font-size:clamp(28px,7vw,44px);font-weight:800;letter-spacing:-.02em;margin-bottom:26px;color:var(--blue-deep)}
.behind__text{font-size:clamp(17px,4.6vw,21px);line-height:1.6;color:#33485a;margin-bottom:18px}
.behind__text em{color:var(--blue-deep);font-style:italic}
.behind__text--strong{font-weight:600;color:var(--light-ink)}
.behind__text--strong em{font-style:normal}

/* =================================================================
   BLOQUE 6 — CTA
   ================================================================= */
.cta{
  min-height:96svh;display:flex;align-items:center;justify-content:center;text-align:center;
  padding:80px 26px calc(60px + env(safe-area-inset-bottom));
  background:
    radial-gradient(100% 70% at 50% 0%,rgba(38,142,215,.25),transparent 60%),
    linear-gradient(180deg,var(--night-1),var(--night-0));
}
.cta__inner{max-width:480px;width:100%}
.cta__title{font-size:clamp(46px,13vw,84px);font-weight:800;letter-spacing:-.03em;line-height:1}
.cta__sub{margin-top:14px;color:var(--ink-dim);font-size:15.5px;line-height:1.5;max-width:340px;margin-inline:auto}

/* Tarjeta QR vCard */
.cta__qr{
  margin:30px auto 0;width:max-content;background:#fff;border-radius:22px;padding:16px;
  box-shadow:0 22px 60px rgba(0,0,0,.45),0 0 0 1px rgba(38,142,215,.25);
  position:relative;
}
.cta__qr::after{content:"";position:absolute;inset:-3px;border-radius:24px;background:radial-gradient(circle at 50% 50%,rgba(38,142,215,.5),transparent 72%);z-index:-1;filter:blur(10px);animation:qrPulse 3s ease-in-out infinite}
@keyframes qrPulse{0%,100%{opacity:.55;transform:scale(1)}50%{opacity:1;transform:scale(1.04)}}
.cta__qr img{display:block;width:200px;height:200px}
.cta__qrcap{margin-top:16px;font-size:15px;font-weight:600;color:var(--ink);line-height:1.4}
.cta__qrcap .brand{color:#fff;font-weight:700}
.cta__qrcap small{display:block;margin-top:3px;font-size:12.5px;font-weight:400;color:var(--ink-dim)}

.cta__wa{
  margin-top:24px;display:inline-flex;align-items:center;justify-content:center;gap:9px;
  background:rgba(16,185,129,.1);color:var(--green);text-decoration:none;font-weight:600;font-size:15px;
  padding:12px 20px;border-radius:14px;border:1px solid rgba(16,185,129,.4);
  transition:transform .18s ease,background .18s ease;
}
.cta__wa:active{transform:scale(.98)}
.cta__wa:hover{background:rgba(16,185,129,.18)}
.cta__wa svg{width:20px;height:20px;fill:var(--green)}
.cta__links{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.cta__links a{color:var(--blue-soft);text-decoration:none;font-size:15.5px;font-family:var(--mono);padding:8px;border-radius:10px;transition:background .15s}
.cta__links a:active{background:rgba(38,142,215,.12)}
.cta__logo{height:34px;width:auto;display:block;margin:38px auto 0;opacity:.9;filter:drop-shadow(0 3px 14px rgba(0,0,0,.4))}
.cta__tag{margin-top:14px;color:var(--ink-dim);font-size:15px}
.cta__tag em{font-style:italic}
.cta__tag strong{color:var(--blue);font-weight:700;font-style:normal}

/* =================================================================
   DESKTOP
   ================================================================= */
@media(min-width:760px){
  .hero{padding-left:48px;padding-right:48px}
  .hero__logo{height:82px}
  .diff__inner{grid-template-columns:repeat(2,1fr)}
  .services__grid{grid-template-columns:repeat(3,1fr)}
  .card{padding:34px 30px}
  .behind__inner{text-align:left}
}

/* =================================================================
   ACCESIBILIDAD — prefers-reduced-motion
   ================================================================= */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .msg{opacity:1;transform:none}
  .choices{opacity:1;transform:none}
  .ask__text .ch{opacity:1}
}

/* foco visible para teclado */
a:focus-visible,.choice:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:8px}