/* =========================================================
   NegoClic — Desarrollo de Sistemas
   Design language: engineering blueprint / schematic drawing
   ========================================================= */

:root{
  --bg: #0F2440;
  --bg-deep: #091730;
  --bg-soft: #142c4d;
  --line: rgba(158, 212, 240, 0.14);
  --line-strong: rgba(158, 212, 240, 0.32);
  --cyan: #6FB6E0;
  --cyan-bright: #9ED4F0;
  --amber: #E8A33D;
  --amber-soft: rgba(232, 163, 61, 0.14);
  --ink: #F4F7FA;
  --muted: #93A9C2;
  --muted-dim: #6C86A1;
  --card-bg: rgba(158, 212, 240, 0.035);
  --card-border: rgba(158, 212, 240, 0.16);

  --font-display: "Space Grotesk", "IBM Plex Sans", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --maxw: 1180px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img, svg{ display:block; max-width:100%; }

a{ color: inherit; text-decoration: none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,p{ margin:0; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

:focus-visible{
  outline: 1.5px solid var(--amber);
  outline-offset: 3px;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  text-transform: uppercase;
  margin: 0 0 16px;
}

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.03em;
  padding: 13px 22px;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
}
.btn svg{ width:15px; height:15px; transition: transform .18s ease; }

.btn--primary{
  background: var(--amber);
  color: #1a1200;
  font-weight: 600;
}
.btn--primary:hover{ transform: translateY(-2px); background: #f0b354; }

.btn--ghost{
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn--ghost:hover{ border-color: var(--cyan-bright); color: var(--cyan-bright); transform: translateY(-2px); }

.btn--lg{ padding: 16px 30px; font-size: 14.5px; }

.btn--card{
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--cyan-bright);
  align-self: flex-start;
}
.btn--card:hover{
  border-color: var(--amber);
  color: var(--amber);
}
.btn--card:hover svg{ transform: translateX(3px); }

.btn--whatsapp{
  background: #25D366;
  color: #082313;
  font-weight: 700;
}
.btn--whatsapp:hover{
  transform: translateY(-2px);
  background: #39de78;
}

/* ---------- Nav ---------- */
.nav{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9, 23, 48, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav__inner{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand__mark{ width:26px; height:26px; color: var(--amber); }
.brand__text{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.04em;
}
.nav__links{ display:flex; align-items:center; gap: 30px; }
.nav__links a:not(.nav__cta){
  font-size: 14.5px;
  color: var(--muted);
  transition: color .18s ease;
}
.nav__links a:not(.nav__cta):hover{ color: var(--ink); }
.nav__cta{
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  transition: border-color .18s ease, color .18s ease;
}
.nav__cta:hover{ border-color: var(--amber); color: var(--amber); }

.nav__burger{
  display:none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav__burger span{ width: 22px; height: 1.5px; background: var(--ink); display:block; }
.nav__mobile{
  display:none;
  flex-direction: column;
  padding: 6px 28px 20px;
  gap: 14px;
  border-top: 1px solid var(--line);
}
.nav__mobile a{ font-size: 15px; color: var(--muted); }
.nav__mobile.is-open{ display:flex; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  overflow: hidden;
  padding: 108px 28px 64px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 900px 500px at 82% -10%, rgba(232,163,61,0.10), transparent 60%),
    radial-gradient(ellipse 700px 500px at -5% 10%, rgba(111,182,224,0.12), transparent 60%),
    var(--bg-deep);
}
.hero__grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 88%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 88%);
}
.crop{
  position:absolute; width:22px; height:22px; z-index:2;
  border-color: var(--line-strong);
  border-style: solid;
  border-width: 0;
}
.crop--tl{ top:20px; left:20px; border-top-width:1.5px; border-left-width:1.5px; }
.crop--tr{ top:20px; right:20px; border-top-width:1.5px; border-right-width:1.5px; }
.crop--bl{ bottom:20px; left:20px; border-bottom-width:1.5px; border-left-width:1.5px; }
.crop--br{ bottom:20px; right:20px; border-bottom-width:1.5px; border-right-width:1.5px; }

.hero__inner{
  position: relative;
  z-index: 3;
  max-width: 840px;
  margin: 0 auto;
  text-align: center;
}
.hero__title{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 5.4vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin-bottom: 22px;
}
.accent-underline{
  position: relative;
  color: var(--cyan-bright);
}
.accent-underline::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:2px;
  height: 8px;
  background: var(--amber-soft);
  z-index: -1;
}
.hero__sub{
  font-size: 17px;
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto 36px;
}
.hero__actions{
  display:flex;
  justify-content:center;
  gap: 16px;
  flex-wrap: wrap;
}

.titleblock{
  position: relative;
  z-index: 3;
  max-width: var(--maxw);
  margin: 64px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  overflow: hidden;
}
.titleblock__field{
  padding: 14px 20px;
  border-right: 1px solid var(--line-strong);
  display:flex;
  flex-direction: column;
  gap: 4px;
}
.titleblock__field:last-child{ border-right: none; }
.titleblock__label{
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--muted-dim);
}
.titleblock__value{
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan-bright);
}

/* ---------- Section head (shared) ---------- */
.section-head{
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
  padding: 0 28px;
}
.section-head h2{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 3.6vw, 36px);
  line-height: 1.22;
  margin-bottom: 14px;
}
.section-head__sub{ color: var(--muted); font-size: 16px; }

/* ---------- Systems ---------- */
.systems{
  padding: 100px 28px 110px;
  max-width: var(--maxw);
  margin: 0 auto;
}

.circuit{
  position: relative;
  height: 40px;
  max-width: 900px;
  margin: 0 auto 8px;
  display: none;
}
.circuit__line{
  position:absolute;
  left: 16.6%; right: 16.6%;
  top: 50%;
  height: 0;
  border-top: 1.5px dashed var(--line-strong);
}
.circuit__node{
  position:absolute;
  top: 50%;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--bg);
  border: 1.5px solid var(--cyan);
  transform: translate(-50%,-50%);
}
.circuit__node:nth-child(2){ left: 16.6%; }
.circuit__node:nth-child(3){ left: 50%; }
.circuit__node:nth-child(4){ left: 83.4%; }

.cards{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.card{
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 30px 26px 26px;
  display: flex;
  flex-direction: column;
  transition: border-color .22s ease, transform .22s ease, background .22s ease;
}
.card:hover{
  border-color: var(--cyan);
  transform: translateY(-4px);
  background: rgba(158, 212, 240, 0.055);
}
.card__drop{
  position:absolute;
  top: -21px;
  left: 50%;
  transform: translateX(-50%);
  width: 1.5px;
  height: 20px;
  background: var(--line-strong);
}
.card__code{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted-dim);
  display:block;
  margin-bottom: 18px;
}
.card__icon{
  width: 48px; height: 48px;
  color: var(--cyan);
  margin-bottom: 18px;
}
.card__title{
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  margin-bottom: 12px;
}
.card__desc{
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.6;
  margin-bottom: 20px;
}
.card__tags{
  display:flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}
.card__tags li{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--cyan-bright);
  background: rgba(111,182,224,0.08);
  border: 1px solid rgba(111,182,224,0.18);
  padding: 5px 10px;
  border-radius: 3px;
}
.card__title, .card__desc, .card__tags{ position:relative; }
.card > .btn--card{ margin-top: auto; }

/* ---------- Why / Proceso ---------- */
.why{
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 100px 28px;
}
.why__inner{
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: start;
}
.why__col h2{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 3.2vw, 34px);
  line-height: 1.24;
  margin-bottom: 18px;
}
.why__sub{ color: var(--muted); font-size: 16px; max-width: 440px; }

.specs{ display:flex; flex-direction: column; }
.specs li{
  padding: 22px 0;
  border-top: 1px solid var(--line);
  display:flex;
  flex-direction: column;
  gap: 8px;
}
.specs li:last-child{ border-bottom: 1px solid var(--line); }
.specs__label{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber);
  letter-spacing: 0.04em;
}
.specs__text{ color: var(--muted); font-size: 15px; max-width: 420px; }

/* ---------- Contact ---------- */
.contact{
  position: relative;
  overflow:hidden;
  padding: 120px 28px;
  text-align: center;
  background: var(--bg-deep);
}
.contact__grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 700px 400px at 50% 40%, rgba(0,0,0,0.9), transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 700px 400px at 50% 40%, rgba(0,0,0,0.9), transparent 75%);
}
.contact__inner{ position:relative; z-index:2; max-width: 560px; margin:0 auto; }
.contact h2{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 38px);
  margin-bottom: 14px;
}
.contact__sub{ color: var(--muted); font-size: 16px; margin-bottom: 32px; }
.contact__panel{
  display: grid;
  gap: 24px;
  text-align: left;
}
.contact__actions{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.contact__action-card{
  background: rgba(158, 212, 240, 0.05);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 22px;
}
.contact__label{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.contact__action-copy{
  color: var(--muted);
  font-size: 14.5px;
  margin-bottom: 18px;
}

.contact-form,
.chat-form{
  background: rgba(158, 212, 240, 0.05);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 24px;
}
.form__row{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.form__field{
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.form__field span{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-bright);
  letter-spacing: 0.05em;
}
.form__field input,
.form__field textarea{
  width: 100%;
  background: rgba(9, 23, 48, 0.85);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 14px 14px;
  font: inherit;
}
.form__field input::placeholder,
.form__field textarea::placeholder{
  color: var(--muted-dim);
}
.form__field input:focus,
.form__field textarea:focus{
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 1px rgba(232, 163, 61, 0.18);
}
.form__field textarea{
  resize: vertical;
  min-height: 120px;
}
.contact-form__foot{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.form__status{
  min-height: 20px;
  margin: 0;
  font-size: 13px;
  color: var(--cyan-bright);
}
.form__status.is-error{ color: #ffb0a8; }

.chat-widget{
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 70;
}
.chat-widget__toggle{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--amber);
  color: #1a1200;
  border: none;
  border-radius: 999px;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.22);
}
.chat-widget__toggle svg{
  width: 18px;
  height: 18px;
}
.chat-widget__panel{
  width: min(360px, calc(100vw - 24px));
  margin-top: 12px;
  margin-left: auto;
  background: rgba(9, 23, 48, 0.98);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.28);
  overflow: hidden;
}
.chat-widget__head{
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 18px 0;
}
.chat-widget__head strong{
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-size: 19px;
}
.chat-widget__head p{
  color: var(--muted);
  font-size: 13.5px;
}
.chat-widget__close{
  background: none;
  border: none;
  color: var(--muted);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}
.chat-form{
  border: none;
  background: transparent;
  padding-top: 16px;
}
.chat-form__submit{
  width: 100%;
  justify-content: center;
 }

/* ---------- Footer ---------- */
.footer{
  border-top: 1px solid var(--line);
  padding: 30px 28px;
}
.footer__inner{
  max-width: var(--maxw);
  margin: 0 auto;
  display:flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}
.footer__brand{ display:flex; align-items:baseline; gap:10px; }
.footer__tag{ font-family: var(--font-mono); font-size: 12px; color: var(--muted-dim); }
.footer__meta{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted-dim);
  display:flex;
  align-items:center;
  gap: 10px;
}
.footer__dot{ color: var(--line-strong); }

/* ---------- Reveal animations ---------- */
.reveal{
  opacity: 0;
  transform: translateY(14px);
  animation: reveal-in .7s ease forwards;
}
.reveal[data-delay="0"]{ animation-delay: .05s; }
.reveal[data-delay="1"]{ animation-delay: .18s; }
.reveal[data-delay="2"]{ animation-delay: .30s; }
.reveal[data-delay="3"]{ animation-delay: .42s; }
.reveal[data-delay="4"]{ animation-delay: .56s; }

@keyframes reveal-in{
  to{ opacity: 1; transform: translateY(0); }
}

.reveal-up{
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal-up.is-visible{ opacity: 1; transform: translateY(0); }
.reveal-up[data-delay="1"]{ transition-delay: .1s; }
.reveal-up[data-delay="2"]{ transition-delay: .2s; }

/* ---------- Responsive ---------- */
@media (min-width: 860px){
  .circuit{ display:block; }
}

@media (max-width: 900px){
  .why__inner{ grid-template-columns: 1fr; gap: 40px; }
  .cards{ grid-template-columns: 1fr; }
  .titleblock{ grid-template-columns: repeat(2, 1fr); }
  .titleblock__field:nth-child(2){ border-right:none; }
  .contact__actions,
  .form__row{ grid-template-columns: 1fr; }
  .contact-form__foot{
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 720px){
  .nav__links{ display:none; }
  .nav__burger{ display:flex; }
  .hero{ padding-top: 90px; }
}

@media (max-width: 480px){
  .hero__actions{ flex-direction: column; align-items: stretch; }
  .titleblock{ grid-template-columns: 1fr; }
  .titleblock__field{ border-right:none; border-bottom: 1px solid var(--line-strong); }
  .titleblock__field:last-child{ border-bottom:none; }
  .chat-widget{
    right: 12px;
    bottom: 12px;
  }
  .chat-widget__toggle{
    width: 100%;
    justify-content: center;
  }
}