/* ============================================================
   MONTECARLO INGENIERÍA Y CONSTRUCCIÓN — Landing express
   Paleta y tokens editables en :root
   ============================================================ */

:root {
  --navy:        #0E2438;   /* azul oscuro principal */
  --navy-deep:   #0A1C2C;   /* fondo más profundo */
  --navy-soft:   #14304a;   /* superficies sobre navy */
  --orange:      #EE7C1B;   /* acento */
  --orange-dark: #D86C12;   /* hover acento */
  --white:       #FFFFFF;
  --gray-bg:     #F4F6F8;   /* fondo claro */
  --gray-line:   #E2E6EB;   /* bordes */
  --gray-soft:   #FAFBFC;
  --ink:         #1B2733;   /* texto principal */
  --ink-soft:    #5A6573;   /* texto secundario */
  --whatsapp:    #25D366;

  --maxw: 1140px;
  --radius: 4px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 3px rgba(14, 36, 56, .08);
  --shadow-md: 0 10px 30px rgba(14, 36, 56, .10);

  --font-display: "Barlow Condensed", system-ui, sans-serif;
  --font-body: "Barlow", system-ui, sans-serif;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--white);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 { margin: 0; font-family: var(--font-display); font-weight: 700; line-height: 1.05; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------- Eyebrow ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .8rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange);
  padding: 5px 12px;
  border: 1px solid rgba(238, 124, 27, .5);
  border-radius: 2px;
  margin-bottom: 18px;
}
.eyebrow--dark { color: var(--orange-dark); border-color: rgba(216, 108, 18, .35); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: 13px 26px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, transform .15s ease, border-color .2s ease;
  min-height: 46px;
}
.btn--primary { background: var(--orange); color: #fff; }
.btn--primary:hover { background: var(--orange-dark); transform: translateY(-1px); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.btn--ghost:hover { background: rgba(255,255,255,.10); border-color: #fff; }
.btn--whatsapp { background: var(--whatsapp); color: #fff; }
.btn--whatsapp:hover { background: #1eb955; transform: translateY(-1px); }

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy);
  transition: box-shadow .25s ease, background .25s ease;
}
.header.is-scrolled { box-shadow: 0 4px 18px rgba(0,0,0,.25); background: var(--navy-deep); }
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
}

/* Logo */
.logo { display: flex; align-items: center; gap: 11px; }
.logo__mark { display: inline-flex; }
.logo__text { display: flex; flex-direction: column; line-height: 1; }
.logo__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: .14em;
  color: #fff;
}
.logo__tag {
  font-size: .58rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--orange);
  margin-top: 3px;
}

/* Nav */
.nav { display: flex; align-items: center; gap: 30px; }
.nav__list { display: flex; gap: 26px; }
.nav__list a {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: .92rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.82);
  padding: 6px 0;
  position: relative;
  transition: color .2s ease;
}
.nav__list a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--orange);
  transition: width .25s ease;
}
.nav__list a:hover, .nav__list a.is-active { color: #fff; }
.nav__list a:hover::after, .nav__list a.is-active::after { width: 100%; }
.nav__cta { padding: 9px 20px; min-height: 0; font-size: .9rem; }

/* Toggle (mobile) */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  background: none; border: none; cursor: pointer;
  padding: 0;
}
.nav__toggle span {
  display: block; width: 26px; height: 2px;
  background: #fff; border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  background: var(--navy);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
/* Foto de fondo del hero (assets/hero.jpg).
   El ::before aplica el degradado navy que protege la legibilidad del texto. */
.hero__bg {
  position: absolute; inset: 0; z-index: -1;
  background-image: url('assets/hero.jpg');
  background-size: cover;
  background-position: 65% 30%; /* encuadre derecho-centro: maquinaria/avión visibles */
  background-repeat: no-repeat;
}
.hero__bg::before {
  content: "";
  position: absolute; inset: 0;
  /* Más oscuro a la izquierda (protege el texto) y abajo (ancla visual) */
  background:
    linear-gradient(to right, rgba(10,28,44,.93) 0%, rgba(10,28,44,.62) 48%, rgba(10,28,44,.18) 100%),
    linear-gradient(to top,   rgba(10,28,44,.82) 0%, transparent 44%);
}

/* En mobile el texto ocupa todo el ancho: overlay uniforme para mantener legibilidad */
@media (max-width: 599px) {
  .hero__bg { background-position: 70% 30%; }
  .hero__bg::before {
    background: linear-gradient(to bottom, rgba(10,28,44,.68) 0%, rgba(10,28,44,.88) 100%);
  }
}
.hero__inner { position: relative; z-index: 1; padding: 72px 0 96px; }
.hero__content { max-width: 640px; }
.hero__title {
  font-size: clamp(2.3rem, 7vw, 4rem);
  letter-spacing: .005em;
  margin: 0 0 20px;
  text-transform: uppercase;
}
.hero__lead {
  font-size: 1.08rem;
  color: rgba(255,255,255,.82);
  max-width: 560px;
  margin: 0 0 32px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* Curva naranja inferior (motivo de marca) */
.hero__curve {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 5px;
  background: var(--orange);
}

/* ============================================================
   SECCIONES (base)
   ============================================================ */
.section { padding: 76px 0; }
.section--soft { background: var(--gray-bg); }
.section--navy { background: var(--navy); color: #fff; }

.section__head { max-width: 720px; margin-bottom: 44px; }
.section__title {
  font-size: clamp(1.9rem, 4.5vw, 2.7rem);
  text-transform: uppercase;
  color: var(--navy);
  letter-spacing: .01em;
}
.section__title--light { color: #fff; }
.section__sub { color: var(--ink-soft); font-size: 1.05rem; margin: 14px 0 0; }
.section--navy .section__sub { color: rgba(255,255,255,.78); }

/* ============================================================
   SERVICIOS — cards
   ============================================================ */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
.card {
  background: #fff;
  border: 1px solid var(--gray-line);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  border-top: 3px solid var(--navy);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-top-color: var(--orange);
}
.card__icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  background: rgba(14,36,56,.06);
  color: var(--navy);
  margin-bottom: 18px;
  transition: background .2s ease, color .2s ease;
}
.card:hover .card__icon { background: var(--orange); color: #fff; }
.card__title {
  font-size: 1.45rem;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 8px;
}
.card__text { color: var(--ink-soft); font-size: .98rem; margin: 0; }

/* ============================================================
   NOSOTROS
   ============================================================ */
.nosotros { display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center; }
.nosotros__text p { color: rgba(255,255,255,.82); margin: 0 0 16px; }
.values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.value {
  background: var(--navy-soft);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  padding: 22px 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.value__icon {
  width: 50px; height: 50px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(238,124,27,.14);
  color: var(--orange);
}
.value__label {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .95rem;
}

/* ============================================================
   REFERENCIAS
   ============================================================ */
.cards--ref { gap: 16px; }
.ref {
  background: #fff;
  border: 1px solid var(--gray-line);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: box-shadow .2s ease, transform .2s ease;
}
.ref:hover { box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.ref__title {
  font-size: 1.3rem;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 7px;
}
.ref__text { color: var(--ink-soft); font-size: .96rem; margin: 0; }

/* ============================================================
   POR QUÉ ELEGIR
   ============================================================ */
.reasons { display: grid; grid-template-columns: 1fr; gap: 12px; }
.reason {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #fff;
  border: 1px solid var(--gray-line);
  border-radius: var(--radius);
  padding: 16px 18px;
  font-weight: 500;
  color: var(--ink);
}
.reason__check {
  flex: 0 0 auto;
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--orange);
  color: #fff;
  border-radius: 50%;
  font-size: .9rem;
  font-weight: 700;
}

/* ============================================================
   CONTACTO
   ============================================================ */
.contacto { display: grid; grid-template-columns: 1fr; gap: 40px; }
.contacto__intro { color: rgba(255,255,255,.8); margin: 0 0 26px; }
.contacto__data { display: grid; gap: 16px; margin: 0 0 26px; }
.contacto__data li { display: flex; flex-direction: column; gap: 2px; border-bottom: 1px solid rgba(255,255,255,.10); padding-bottom: 12px; }
.contacto__label {
  font-family: var(--font-display);
  font-size: .78rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--orange);
}
.contacto__value { color: #fff; font-size: 1.05rem; }
a.contacto__value:hover { color: var(--orange); }

/* Form */
.form {
  background: var(--navy-soft);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}
.form__row { display: flex; flex-direction: column; margin-bottom: 16px; }
.form__grid { display: grid; grid-template-columns: 1fr; gap: 0; }
.form label {
  font-family: var(--font-display);
  font-size: .82rem; letter-spacing: .1em; text-transform: uppercase;
  color: rgba(255,255,255,.7);
  margin-bottom: 7px;
}
.form input, .form textarea {
  font-family: var(--font-body);
  font-size: 16px;
  color: #fff;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--radius);
  padding: 12px 14px;
  transition: border-color .2s ease, background .2s ease;
  resize: vertical;
}
.form input::placeholder, .form textarea::placeholder { color: rgba(255,255,255,.4); }
.form input:focus, .form textarea:focus {
  outline: none;
  border-color: var(--orange);
  background: rgba(255,255,255,.10);
}
.form__submit { width: 100%; margin-top: 4px; }
.form__feedback {
  margin: 16px 0 0;
  padding: 12px 14px;
  background: rgba(37,211,102,.14);
  border: 1px solid rgba(37,211,102,.4);
  border-radius: var(--radius);
  color: #d6ffe6;
  font-size: .95rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--navy-deep); color: rgba(255,255,255,.65); padding: 30px 0; }
.footer__inner { display: flex; flex-direction: column; gap: 6px; text-align: center; }
.footer__brand { font-family: var(--font-display); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: #fff; }
.footer__meta { font-size: .92rem; }
.footer__copy { font-size: .82rem; color: rgba(255,255,255,.45); margin-top: 6px; }

/* ============================================================
   WHATSAPP FLOTANTE
   ============================================================ */
.whatsapp-float {
  position: fixed;
  right: 18px; bottom: 18px;
  z-index: 200;
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: var(--whatsapp);
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 6px 18px rgba(0,0,0,.28);
  transition: transform .2s ease;
}
.whatsapp-float:hover { transform: scale(1.07); }

/* ============================================================
   REVEAL (scroll)
   ============================================================ */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ============================================================
   BREAKPOINTS
   ============================================================ */
@media (min-width: 600px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .cards--ref { grid-template-columns: repeat(2, 1fr); }
  .reasons { grid-template-columns: repeat(2, 1fr); }
  .form__grid { grid-template-columns: 1fr 1fr; gap: 16px; }
}

@media (min-width: 900px) {
  .container { padding: 0 32px; }
  .cards { grid-template-columns: repeat(3, 1fr); gap: 22px; }
  .reasons { grid-template-columns: repeat(3, 1fr); }
  .nosotros { grid-template-columns: 1.2fr .8fr; gap: 56px; }
  .contacto { grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
  .hero__inner { padding: 104px 0 128px; }
  .section { padding: 96px 0; }
}

/* Menú mobile */
@media (max-width: 860px) {
  .nav__toggle { display: flex; }
  .nav {
    position: fixed;
    top: 70px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--navy-deep);
    padding: 8px 22px 22px;
    transform: translateY(-130%);
    transition: transform .3s ease;
    box-shadow: 0 12px 24px rgba(0,0,0,.3);
    border-top: 2px solid var(--orange);
  }
  .nav.is-open { transform: translateY(0); }
  .nav__list { flex-direction: column; gap: 0; }
  .nav__list li { border-bottom: 1px solid rgba(255,255,255,.08); }
  .nav__list a { display: block; padding: 14px 0; }
  .nav__list a::after { display: none; }
  .nav__cta { margin-top: 16px; text-align: center; }
}

/* ============================================================
   ACCESIBILIDAD — movimiento reducido
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition: none !important; }
}