/* ===== TECHVIEW · Instrumento cartográfico ===== */
:root {
  /* Terrain inks */
  --petrol:     #0b2830;   /* deep terrain ink (dark ground) */
  --petrol-2:   #103640;   /* raised terrain */
  --petrol-3:   #17454f;
  --ink:        #12262b;   /* text on paper */
  --muted:      #5a6b6b;   /* secondary text */
  /* Paper */
  --paper:      #f4f5f1;   /* cool drafting paper */
  --paper-2:    #ecefe8;   /* alt paper band */
  --line:       #d7ddd3;   /* hairline on paper */
  /* Survey marker (brand amber) */
  --marker:     #f2a516;
  --marker-2:   #ffc24d;
  --marker-ink: #2a1c00;   /* text on marker */
  /* Cartographic accents */
  --contour:    #6f9088;   /* contour line sage */
  --grid:       #2b5560;   /* grid on dark */

  --r:          4px;       /* drafting radius */
  --container:  1160px;
  --sans:  'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --disp:  'Archivo', 'IBM Plex Sans', system-ui, sans-serif;
  --mono:  'IBM Plex Mono', ui-monospace, 'SFMono-Regular', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 106.25%; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 28px; }
.accent { color: var(--marker); }

/* ===== Mono utility type ===== */
.mono {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}
.eyebrow::before {
  content: ""; width: 26px; height: 1px; background: var(--marker);
}
.section--dark .eyebrow { color: rgba(255,255,255,0.66); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 14px 24px;
  border-radius: var(--r);
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.84rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn--primary { background: var(--marker); color: var(--marker-ink); }
.btn--primary:hover { background: var(--marker-2); transform: translateY(-2px); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.35); }
.btn--ghost:hover { border-color: var(--marker); color: var(--marker); transform: translateY(-2px); }
.btn--dark { background: var(--petrol); color: #fff; }
.btn--dark:hover { background: var(--petrol-2); transform: translateY(-2px); }
.btn--block { width: 100%; }

/* ===== Navbar ===== */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(244,245,241,0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.nav.scrolled { border-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.nav__brand { display: flex; align-items: center; gap: 11px; }
.nav__logo { width: 36px; height: 36px; border-radius: var(--r); object-fit: cover; }
.nav__name { font-family: var(--disp); font-weight: 700; font-size: 1.26rem; letter-spacing: -0.02em; color: var(--ink); }
.nav__links { display: flex; align-items: center; gap: 28px; }
.nav__links a {
  font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink); font-weight: 500; transition: color 0.15s ease;
}
.nav__links a:hover { color: var(--marker); }
.nav__coord { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em; color: var(--muted); }
.nav__links a.nav__cta {
  background: var(--marker); color: var(--marker-ink);
  padding: 9px 17px; border-radius: var(--r);
  transition: background 0.2s ease;
}
.nav__links a.nav__cta:hover { background: var(--marker-2); color: var(--marker-ink); }
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav__toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: 0.25s; }

/* ===== Topographic layer ===== */
.topo {
  position: absolute; inset: 0;
  background: url("assets/topo.svg") center / cover no-repeat;
  pointer-events: none;
}

/* ===== Registration corners ===== */
.framed { position: relative; }
.framed::before, .framed::after {
  content: ""; position: absolute; width: 16px; height: 16px; pointer-events: none;
}
.framed::before { top: 22px; left: 6px; border-top: 1px solid var(--marker); border-left: 1px solid var(--marker); }
.framed::after { bottom: 22px; right: 6px; border-bottom: 1px solid var(--marker); border-right: 1px solid var(--marker); }

/* ===== Hero ===== */
.hero { position: relative; background: var(--petrol); color: #fff; overflow: hidden; }
.hero .topo { opacity: 0.28; }
.hero__inner { position: relative; padding: 104px 28px 60px; max-width: 900px; }
.hero__eyebrow { color: rgba(255,255,255,0.7); margin-bottom: 26px; }
.hero__eyebrow::before { background: var(--marker); }
.hero__title {
  font-family: var(--disp);
  font-weight: 700;
  font-size: clamp(2.3rem, 5.4vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.042em;
  max-width: 15ch;
}
.hero__lead {
  margin: 28px 0 34px;
  max-width: 56ch;
  font-size: 1.12rem;
  color: rgba(255,255,255,0.8);
}
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ===== Strip ===== */
.strip { background: var(--petrol-2); border-top: 1px solid rgba(255,255,255,0.06); }
.strip__inner { padding: 16px 28px; display: flex; align-items: center; gap: 18px; justify-content: center; flex-wrap: wrap; }
.strip p { font-family: var(--mono); color: rgba(255,255,255,0.62); font-size: 0.76rem; letter-spacing: 0.14em; text-transform: uppercase; }

/* ===== Sections ===== */
.section { padding: 100px 0; position: relative; }
.section--alt { background: var(--paper-2); }
.section--dark { background: var(--petrol); color: #fff; overflow: hidden; }
.section__head { max-width: 660px; margin: 0 0 56px; }
.section__head .eyebrow { margin-bottom: 18px; }
.section__head h2 {
  font-family: var(--disp);
  font-weight: 600;
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.section__head p { color: var(--muted); font-size: 1.08rem; margin-top: 14px; max-width: 60ch; }
.section--dark .section__head p { color: rgba(255,255,255,0.76); }

/* ===== Hero · tres lecturas del mismo territorio ===== */
.hero__lecturas { position: relative; padding-bottom: 92px; }
.lecturas {
  list-style: none; display: grid;
  grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.lectura { display: flex; flex-direction: column; }
.lectura__sensor {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--marker-2);
  padding-bottom: 11px; border-bottom: 1px solid rgba(255,255,255,0.2);
}
.lectura__visual {
  aspect-ratio: 16 / 10; overflow: hidden; background: var(--petrol-2);
  border: 1px solid rgba(255,255,255,0.14); border-top: none;
  border-radius: 0 0 var(--r) var(--r);
}
.lectura__visual img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  filter: saturate(0.94);
  transition: transform 0.5s ease, filter 0.4s ease;
}
.lectura:hover .lectura__visual img { transform: scale(1.035); filter: saturate(1.06); }
.lectura__lee {
  margin-top: 15px; font-size: 0.97rem; line-height: 1.5;
  color: rgba(255,255,255,0.74);
}
@media (max-width: 860px) {
  .lecturas { grid-template-columns: 1fr; gap: 26px; }
  .hero__lecturas { padding-bottom: 64px; }
}

/* ===== Servicios · índice ===== */
.svc { list-style: none; border-top: 1px solid var(--line); }
.svc li {
  display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 6px 44px;
  padding: 21px 18px; border-bottom: 1px solid var(--line);
  box-shadow: inset 0 0 0 0 var(--marker);
  transition: background 0.18s ease, box-shadow 0.18s ease;
}
.svc li:hover { background: rgba(242,165,22,0.07); box-shadow: inset 3px 0 0 0 var(--marker); }
.svc h3 {
  font-family: var(--disp); font-weight: 600; font-size: 1.08rem;
  letter-spacing: -0.012em; line-height: 1.3;
}
.svc p { color: var(--muted); font-size: 0.97rem; line-height: 1.55; }
@media (max-width: 760px) {
  .svc li { grid-template-columns: 1fr; gap: 5px; padding: 18px 14px; }
}

/* ===== Disciplinas (tres especialidades) ===== */
.disc {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  border-top: 1px solid var(--line);
}
.disc__item { padding: 34px 30px 6px 0; position: relative; }
.disc__item + .disc__item { padding-left: 30px; }
.disc__item + .disc__item::before {
  content: ""; position: absolute; left: 0; top: 34px; bottom: 6px; width: 1px; background: var(--line);
}
.disc__item h3 {
  font-family: var(--disp); font-weight: 600; font-size: 1.22rem;
  letter-spacing: -0.02em; line-height: 1.22; margin-bottom: 10px;
}
.disc__item > p { color: var(--muted); font-size: 0.97rem; }
.disc__list { list-style: none; margin-top: 22px; }
.disc__list li {
  font-size: 0.97rem; line-height: 1.45; padding: 11px 0 11px 18px;
  border-top: 1px solid var(--line); position: relative;
}
.disc__note {
  margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
}
.disc__note b { color: var(--ink); font-weight: 500; }

@media (max-width: 940px) {
  .disc { grid-template-columns: 1fr; }
  .disc__item { padding: 30px 0 6px; }
  .disc__item + .disc__item { padding-left: 0; border-top: 1px solid var(--line); }
  .disc__item + .disc__item::before { display: none; }
}

/* ===== Caso (estudio destacado) ===== */
.caso { position: relative; display: grid; grid-template-columns: 1.55fr 1fr; gap: 34px; align-items: start; }
.caso__fig { border: 1px solid rgba(255,255,255,0.16); border-radius: var(--r); overflow: hidden; background: var(--petrol-2); }
.caso__fig img { width: 100%; height: auto; object-fit: cover; display: block; }
.caso__fig figcaption {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(255,255,255,0.6); padding: 12px 16px; border-top: 1px solid rgba(255,255,255,0.12);
}
.caso__panel { padding-top: 4px; }
.caso__label {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--marker-2); margin-bottom: 16px;
}
.legend { list-style: none; border-top: 1px solid rgba(255,255,255,0.14); }
.legend li {
  display: grid; grid-template-columns: 14px auto; gap: 0 12px; align-items: center;
  padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,0.14);
}
.legend i { width: 14px; height: 14px; border-radius: 2px; grid-row: span 2; align-self: start; margin-top: 3px; }
.legend b { font-family: var(--disp); font-weight: 600; font-size: 1rem; }
.legend span { font-size: 0.92rem; color: rgba(255,255,255,0.68); grid-column: 2; }
.caso__facts { margin-top: 26px; }
.caso__facts div { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.14); }
.caso__facts dt {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: rgba(255,255,255,0.55); margin-bottom: 5px;
}
.caso__facts dd { font-size: 0.97rem; }
.caso__conf {
  margin-top: 22px; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: rgba(255,255,255,0.45);
}

@media (max-width: 940px) {
  .caso { grid-template-columns: 1fr; gap: 28px; }
}

/* ===== Sensores ===== */
.sensores {
  margin-top: 8px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  border-top: 1px solid rgba(255,255,255,0.16);
}
.sensores div { padding: 22px 24px 6px 0; position: relative; }
.sensores div + div { padding-left: 24px; }
.sensores div + div::before {
  content: ""; position: absolute; left: 0; top: 22px; bottom: 6px; width: 1px;
  background: rgba(255,255,255,0.16);
}
.sensores dt {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--marker-2); margin-bottom: 8px;
}
.sensores dd { font-size: 0.97rem; color: rgba(255,255,255,0.8); line-height: 1.5; }
.espectro__cta { margin-top: 44px; }

@media (max-width: 620px) {
  .sensores { grid-template-columns: 1fr; }
  .sensores div { padding: 20px 0 6px; border-top: 1px solid rgba(255,255,255,0.16); }
  .sensores div + div { padding-left: 0; }
  .sensores div + div::before { display: none; }
  .sensores div:first-child { border-top: none; }
}

/* ===== Products / plates ===== */
.products { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.plate {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r);
  overflow: hidden; transition: border-color 0.2s ease, transform 0.2s ease;
}
.plate:hover { border-color: var(--petrol-3); transform: translateY(-3px); }
.plate__cap {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--line);
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted);
}
.plate__cap b { color: var(--marker); font-weight: 500; }
.plate__visual { aspect-ratio: 16 / 9; overflow: hidden; background: var(--petrol); }
.plate__visual img { width: 100%; height: 100%; object-fit: cover; display: block; }
.plate__body { padding: 22px 24px 26px; }
.plate__body h3 { font-family: var(--disp); font-size: 1.22rem; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.015em; }
.plate__body p { color: var(--muted); font-size: 0.97rem; }

/* ===== Proceso · flight path timeline ===== */
.proceso__wrap { position: relative; padding-top: 64px; }
.flightpath { position: absolute; top: 0; left: 0; right: 0; width: 100%; height: 64px; pointer-events: none; z-index: 0; }
.flightpath path { fill: none; stroke: var(--marker); stroke-width: 1.5; stroke-dasharray: var(--len, 2000); stroke-dashoffset: var(--len, 2000); transition: stroke-dashoffset 1.6s ease; }
.flightpath.drawn path { stroke-dashoffset: 0; }
.flightpath circle { fill: var(--paper); stroke: var(--marker); stroke-width: 1.5; }
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 1; }
.step { padding: 26px 22px; border: 1px solid var(--line); border-radius: var(--r); background: var(--paper); }
.section--alt .step { background: #fff; }
.step__num { font-family: var(--mono); font-weight: 500; font-size: 0.84rem; letter-spacing: 0.1em; color: var(--marker); display: inline-flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.step__num::before { content: ""; width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--marker); }
.step h3 { font-size: 1.08rem; font-family: var(--disp); font-weight: 600; margin-bottom: 6px; letter-spacing: -0.01em; }
.step p { color: var(--muted); font-size: 0.97rem; }

/* ===== About ===== */
.section--dark .topo { opacity: 0.2; }
.about { position: relative; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: start; }
.about__text h2 { font-family: var(--disp); font-weight: 600; font-size: clamp(1.8rem, 3.4vw, 2.5rem); margin: 18px 0 18px; letter-spacing: -0.03em; line-height: 1.1; }
.about__text > p { color: rgba(255,255,255,0.82); font-size: 1.08rem; margin-bottom: 26px; max-width: 58ch; }
.about__list { list-style: none; display: grid; gap: 13px; align-content: start; padding-top: 6px; }
.about__list li { position: relative; padding-left: 30px; color: rgba(255,255,255,0.9); font-size: 1rem; }
.about__list li::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 10px; height: 10px;
  border: 1.5px solid var(--marker); border-radius: 50%; background: transparent;
}
/* ===== Agendar ===== */
.agendar { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: start; }
.agendar__intro h2 { font-family: var(--disp); font-weight: 600; font-size: clamp(1.8rem, 3.2vw, 2.4rem); margin: 18px 0 14px; letter-spacing: -0.03em; line-height: 1.1; }
.agendar__intro > p { color: var(--muted); font-size: 1.06rem; margin-bottom: 30px; max-width: 46ch; }
.contact { list-style: none; display: grid; gap: 14px; }
.contact li { display: flex; align-items: center; gap: 14px; font-size: 1rem; }
.contact__ico { width: 36px; height: 36px; flex: none; display: grid; place-items: center; border-radius: var(--r); background: var(--petrol); color: var(--marker); font-size: 1.02rem; }
.contact a:hover { color: var(--marker); }

/* Form */
.form { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 30px; display: grid; gap: 18px; }
.section--alt .form { background: #fff; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form label { display: grid; gap: 7px; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500; color: var(--muted); }
.form input, .form select, .form textarea {
  font-family: var(--sans); font-size: 0.99rem; font-weight: 400; letter-spacing: 0; text-transform: none;
  padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--paper); color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--marker); background: #fff; }
.form textarea { resize: vertical; }
.form__note { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.06em; text-align: center; min-height: 1.2em; }
.form__note.ok { color: #1a8f5b; }
.form__note.err { color: #c0392b; }

/* ===== Footer ===== */
.footer { background: var(--petrol); color: rgba(255,255,255,0.7); padding: 46px 0; }
.footer__inner { display: flex; flex-direction: column; align-items: center; gap: 18px; text-align: center; }
.footer__brand { display: flex; align-items: center; gap: 10px; }
.footer__brand .nav__name { color: #fff; }
.footer__logo { width: 32px; height: 32px; border-radius: var(--r); }
.footer__links { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; }
.footer__links a { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.08em; text-transform: uppercase; transition: color 0.15s ease; }
.footer__links a:hover { color: var(--marker); }
.footer__meta { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; color: rgba(255,255,255,0.45); }

/* ===== Foco ===== */
:where(a, button, input, select, textarea):focus-visible {
  outline: 2px solid var(--marker); outline-offset: 3px;
}
.section--dark :where(a, button):focus-visible,
.hero :where(a, button):focus-visible { outline-color: var(--marker-2); }

/* ===== Reveal ===== */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 940px) {
  .about { grid-template-columns: 1fr; gap: 34px; }
  .agendar { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 1140px) {
  .nav__coord { display: none; }
}

/* Cuatro columnas con texto de 16.5px quedan estrechas antes de los 1080 */
@media (max-width: 1080px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
  .flightpath { display: none; }
  .sensores { grid-template-columns: repeat(2, 1fr); }
  .sensores div:nth-child(3), .sensores div:nth-child(4) {
    border-top: 1px solid rgba(255,255,255,0.16); margin-top: 4px;
  }
}
@media (max-width: 940px) {
  .nav__links {
    position: fixed; top: 74px; left: 0; right: 0;
    background: var(--paper); flex-direction: column; align-items: stretch; gap: 0;
    padding: 12px 28px 24px; border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(11,40,48,0.12);
    transform: translateY(-140%); transition: transform 0.3s ease;
  }
  .nav__links.open { transform: translateY(0); }
  .nav__links a { padding: 15px 0; border-bottom: 1px solid var(--line); }
  .nav__links a.nav__cta { background: none; color: var(--marker); padding: 15px 0; border-radius: 0; }
  .nav__toggle { display: flex; }
  .nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__toggle.open span:nth-child(2) { opacity: 0; }
  .nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}
@media (max-width: 620px) {
  .section { padding: 72px 0; }
  .steps, .products { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .hero__inner { padding: 76px 28px 64px; }
  .readout li { flex: 1 1 100%; }
  .readout li + li { padding-left: 0; }
  .readout li + li::before { display: none; }
  .readout li { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 16px; margin-top: 4px; }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .flightpath path { transition: none; stroke-dashoffset: 0; }
}