/* ============================================================
   COREX — páginas públicas de producto (pre-lanzamiento)
   Acarreo Core (.acarreo, ámbar) / Nautic Core (.nautic, verde)
   Mismo sistema visual que el sitio de Obra Core: base negra,
   hero con imagen a la derecha, tarjetas oscuras, acento propio.
   ============================================================ */

:root {
  --ink-0: #080808;
  --ink-1: #0F0F0F;
  --ink-2: #1E1E1E;
  --graphite: #9A9A9A;
  --graphite-dim: #6B6B6B;
  --paper: #FFFFFF;
  --paper-dim: #CFCFCF;
  --font-sans: "Archivo", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --wrap: 1160px;
}

body.acarreo {
  --accent: #D18A16;
  --accent-hover: #B27412;
  --accent-text: #E5A93F;
  --on-accent: #080808;
}

body.nautic {
  --accent: #167C75;
  --accent-hover: #0F5A55;
  --accent-text: #3FB0A8;
  --on-accent: #FFFFFF;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--ink-0);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

.mono { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; }

.dim { color: var(--graphite); }

/* ---------- Tipografía ---------- */

h1, h2, h3 {
  font-variation-settings: "wdth" 118;
  font-weight: 750;
  line-height: 1.04;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  text-wrap: balance;
}

h1 { font-size: clamp(2.4rem, 5.4vw, 4.4rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); }
h3 { font-size: clamp(1.05rem, 1.6vw, 1.3rem); line-height: 1.2; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--graphite);
  margin-bottom: 1.1rem;
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 9px; height: 9px;
  border: 1.5px solid var(--accent-text);
  margin-right: 0.7rem;
  transform: translateY(1px);
}

.lead {
  font-size: clamp(1.05rem, 1.7vw, 1.25rem);
  color: var(--paper-dim);
  max-width: 34em;
  margin-top: 1.4rem;
}

/* ---------- Botones ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  text-align: center;
  padding: 0.95rem 1.7rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-accent { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-ghost { background: transparent; color: var(--paper); border-color: #3A3A3A; }
.btn-ghost:hover { border-color: var(--paper); }

:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 3px; }

/* ---------- Navegación ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background 0.25s ease, border-color 0.25s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(8, 8, 8, 0.88);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--ink-2);
}

.nav-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 2.4rem;
}

.nav-logo img { height: 30px; width: auto; }

.nav-links { display: flex; gap: 1.9rem; margin-left: auto; }

.nav-links a, .nav-mobile a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--graphite);
  transition: color 0.2s ease;
}

.nav-links a:hover, .nav-mobile a:hover { color: var(--paper); }

.nav-cta { padding: 0.6rem 1.2rem; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 40px; height: 40px;
  margin-left: auto;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--paper);
  transition: transform 0.25s ease;
}

.nav-toggle.open span:first-child { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle.open span:last-child { transform: translateY(-4.5px) rotate(-45deg); }

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 1.4rem;
  padding: 1.6rem 24px 2.2rem;
  background: rgba(8, 8, 8, 0.97);
  border-bottom: 1px solid var(--ink-2);
}

.nav-mobile.open { display: flex; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
}

/* Velo de legibilidad: protege el texto sin apagar la imagen */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(100deg, rgba(8, 8, 8, 0.92) 26%, rgba(8, 8, 8, 0.5) 48%, rgba(8, 8, 8, 0) 70%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-top: 90px;
}

.hero-content h1 { max-width: 12em; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.4rem; }

/* ---------- Secciones ---------- */

.section { padding: clamp(4.5rem, 9vw, 8rem) 0; }

.section-line { border-top: 1px solid var(--ink-2); }

.section-head { margin-bottom: clamp(2.4rem, 5vw, 4rem); }

.section-head h2 { margin-top: 0.4rem; }

/* ---------- Visión del producto ---------- */

.split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.split-copy { display: grid; gap: 1.2rem; color: var(--paper-dim); }

.split-copy strong { color: var(--paper); font-weight: 640; }

.vision-rule {
  display: block;
  width: 44px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 1.3rem;
}

/* ---------- Capacidades ---------- */

.mod-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}

.mod-card {
  border: 1px solid var(--ink-2);
  background: var(--ink-1);
  padding: 2.1rem 1.9rem;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.mod-card:hover { border-color: var(--accent); transform: translateY(-3px); }

.mod-mark {
  display: block;
  width: 14px; height: 14px;
  border: 2px solid var(--accent-text);
  margin-bottom: 1.6rem;
  transition: background 0.25s ease, transform 0.25s ease;
}

.mod-card:hover .mod-mark { background: var(--accent); border-color: var(--accent); transform: rotate(45deg); }

.mod-card p { color: var(--graphite); margin-top: 0.7rem; }

/* ---------- Franja de confianza ---------- */

.trust {
  margin-top: clamp(2.4rem, 5vw, 3.6rem);
  padding-top: 1.8rem;
  border-top: 1px solid var(--ink-2);
  text-align: center;
  color: var(--graphite);
}

.trust::before {
  content: "";
  display: inline-block;
  width: 8px; height: 8px;
  border: 1.5px solid var(--accent-text);
  margin-right: 0.8rem;
  transform: translateY(1px);
}

/* ---------- Formulario ---------- */

.form-section { background: var(--ink-0); }

.form-grid { display: grid; grid-template-columns: 1fr; gap: 2.4rem; align-items: start; }

.form-intro p { color: var(--graphite); margin-top: 1rem; max-width: 28em; }

.form { display: grid; grid-template-columns: 1fr; gap: 1.1rem; }

.field { display: grid; gap: 0.45rem; }

.field label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
}

.field input, .field select {
  background: var(--ink-1);
  border: 1px solid var(--ink-2);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.9rem 1rem;
  width: 100%;
  border-radius: 0;
  transition: border-color 0.2s ease;
}

.field select { appearance: none; }

.field input:hover, .field select:hover { border-color: var(--graphite-dim); }

.field input:focus, .field select:focus { border-color: var(--accent-text); outline: none; }

.form .btn { justify-self: stretch; margin-top: 0.4rem; }

.form-note { font-size: 0.85rem; color: var(--graphite-dim); }

/* ---------- Footer ---------- */

.footer { border-top: 1px solid var(--ink-2); padding: 2.6rem 0; }

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.6rem;
}

.footer-logo { height: 24px; width: auto; }

.footer-links { display: flex; gap: 1.5rem; margin-left: auto; }

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite);
  text-decoration: none;
}

.footer-links a:hover { color: var(--paper); }

.footer-by {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--graphite-dim);
}

.footer-by img { height: 16px; width: auto; opacity: 0.8; }

.footer-by a:hover img { opacity: 1; }

.footer-legal { color: var(--graphite-dim); width: 100%; }

/* ---------- Revelado ---------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.in { opacity: 1; transform: none; }

.reveal.d1 { transition-delay: 0.12s; }
.reveal.d2 { transition-delay: 0.24s; }
.reveal.d3 { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .mod-card, .mod-mark, .btn { transition: none; }
}

/* ---------- Responsive ---------- */

@media (min-width: 640px) {
  .form { grid-template-columns: 1fr 1fr; }
  .field-full, .form .btn, .form-note { grid-column: 1 / -1; }
  .form .btn { justify-self: start; }
}

@media (min-width: 980px) {
  .form-grid { grid-template-columns: 1fr 1.2fr; gap: 5rem; }
}

@media (max-width: 920px) {
  .split { grid-template-columns: 1fr; }
  .mod-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .hero-bg { opacity: 0.45; }
  .mod-grid { grid-template-columns: 1fr; }
  .footer-links { margin-left: 0; }
}

/* ---------- Formulario: envío real ---------- */

.hp-field { display: none; }

.form-ok {
  font-size: 1.05rem;
  color: var(--paper);
  border: 1px solid var(--accent);
  padding: 1.4rem 1.6rem;
}

.form-ok::before {
  content: "";
  display: inline-block;
  width: 10px; height: 10px;
  background: var(--accent);
  margin-right: 0.8rem;
}

@media (max-width: 480px) {
  .field label { letter-spacing: 0.06em; }
}