/* ===================================================================
   Marventto — Transporte Serrano
   =================================================================== */

:root {
  /* Marca oficial Marventto — Manual de marca */
  --red-900: #4a0f13;
  --red-800: #6b1216;
  --red-700: #8c191d;   /* rojo institucional */
  --red-600: #a1232a;
  --red-500: #b62f34;
  --black: #3c3c3b;     /* gris oscuro institucional */
  --black-deep: #262625;
  --ink: #2b2b2a;
  --stone: #6b6a68;
  --cream: #f6f1ea;
  --cream-2: #efe6da;
  --white: #ffffff;

  /* Paleta secundaria — uso acotado, nunca sobre el logo */
  --accent-sky: #86c2eb;
  --accent-green: #7fa51b;
  --accent-brown: #bd9c65;

  --font-display: "Antonio", "Arial Narrow", Arial, sans-serif;
  --font-body: "Open Sans", "Segoe UI", Arial, sans-serif;

  --container: 1180px;
  --radius: 14px;
  --shadow-soft: 0 20px 45px -20px rgba(22, 19, 17, 0.35);
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 { font-family: var(--font-display); text-transform: uppercase; letter-spacing: .02em; margin: 0 0 .4em; line-height: 1.12; }
p { margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--red-700);
  color: var(--white);
  padding: 12px 18px;
  z-index: 999;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.92rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .25s var(--ease), background-color .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.btn:hover { transform: translateY(-3px); }
.btn:active { transform: translateY(-1px); }

.btn-primary {
  background: var(--red-700);
  color: var(--white);
  box-shadow: 0 12px 24px -10px rgba(122, 22, 29, 0.65);
}
.btn-primary:hover { background: var(--red-600); }

.btn-outline {
  border-color: rgba(255,255,255,.75);
  color: var(--white);
}
.btn-outline:hover { background: rgba(255,255,255,.12); border-color: #fff; }

.btn-whatsapp {
  background: #ffffff;
  color: var(--red-700);
  padding: 10px 20px;
  font-size: .82rem;
}
.btn-whatsapp .icon { width: 18px; height: 18px; fill: currentColor; }
.btn-whatsapp:hover { background: var(--cream); }

.btn-block { width: 100%; justify-content: center; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  background: transparent;
  transition: background-color .35s var(--ease), padding .35s var(--ease), box-shadow .35s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(22, 19, 17, 0.92);
  backdrop-filter: blur(8px);
  padding: 10px 0;
  box-shadow: 0 10px 30px -18px rgba(0,0,0,.6);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand { display: flex; align-items: center; margin-right: auto; transition: transform .3s var(--ease); }
.brand:hover { transform: translateY(-1px); }
.brand-logo {
  height: 42px;
  width: auto;
  flex-shrink: 0;
  transition: height .35s var(--ease);
}
.site-header.is-scrolled .brand-logo { height: 36px; }

.main-nav ul { display: flex; gap: 30px; }
.main-nav a {
  color: var(--white);
  font-family: var(--font-display);
  font-size: .82rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  position: relative;
  padding: 6px 0;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--red-500);
  transition: width .3s var(--ease);
}
.main-nav a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 52%;
  transform: scale(1.08);
  animation: heroZoom 18s ease-out forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.14); }
  to { transform: scale(1); }
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(20,12,11,.94) 5%, rgba(61,12,15,.86) 38%, rgba(61,12,15,.55) 62%, rgba(20,12,11,.4) 100%);
}
.hero-content { position: relative; z-index: 2; padding-top: 90px; max-width: 720px; }
.eyebrow {
  font-family: var(--font-display);
  font-size: .78rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--red-500);
  margin-bottom: 14px;
}
.hero h1 { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.brand-name-hero {
  font-size: clamp(2.6rem, 7vw, 5rem);
  font-weight: 700;
  letter-spacing: .01em;
  line-height: 1;
}
.hero-tagline {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(1.2rem, 2.6vw, 1.7rem);
  letter-spacing: .02em;
  color: var(--white);
  margin-bottom: 18px;
}
.hero-desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,.86);
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.scroll-cue {
  position: absolute;
  right: 32px;
  bottom: 36px;
  z-index: 2;
  width: 46px; height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid rgba(255,255,255,.5);
  border-radius: 50%;
  color: var(--white);
  transition: background-color .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}
.scroll-cue:hover {
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.85);
  transform: translateY(3px);
}
.scroll-cue svg {
  width: 20px; height: 20px;
  animation: cueBounce 1.8s ease-in-out infinite;
}
@keyframes cueBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* ---------- Sections ---------- */
.section { padding: 110px 0; }
.section-alt { background: var(--cream); }
.section-dark {
  background: linear-gradient(180deg, var(--black), var(--black-deep));
  color: var(--white);
}
.section-dark .section-lead { color: rgba(255,255,255,.75); }

.section-head { max-width: 640px; margin: 0 auto 60px; text-align: center; }
.section-head h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); color: var(--ink); }
.section-dark .section-head h2 { color: var(--white); }
.section-head .eyebrow { color: var(--red-700); }
.section-dark .section-head .eyebrow { color: var(--red-500); }
.section-lead { color: var(--stone); font-size: 1.05rem; }

/* ---------- Pillars (Nosotros) ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.pillar-card {
  text-align: center;
  padding: 40px 26px;
  border-radius: var(--radius);
  border: 1px solid #ece3d8;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.pillar-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-soft);
  border-color: transparent;
}
.pillar-icon { margin: 0 auto 20px; width: 64px; height: 64px; }
.icon-lg { width: 100%; height: 100%; }
.icon-ring { fill: none; stroke: var(--red-700); stroke-width: 1.4; opacity: .35; }
.icon-stroke { fill: none; stroke: var(--red-700); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-fill-solid { fill: var(--red-700); }
.pillar-card h3 { font-size: 1.15rem; color: var(--ink); }
.pillar-card p { color: var(--stone); font-size: .96rem; margin: 0; }

/* ---------- Servicios ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 42px 30px;
  box-shadow: var(--shadow-soft);
  transition: transform .35s var(--ease);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red-700), var(--red-500));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.service-card:hover { transform: translateY(-10px); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 96px; height: 96px;
  margin-bottom: 22px;
}
.service-icon img { display: block; width: 100%; height: 100%; object-fit: contain; }
.service-card h3 { font-size: 1.2rem; color: var(--ink); }
.service-card p { color: var(--stone); margin: 0; }

.services-cta { text-align: center; margin-top: 52px; }

/* ---------- Flota ---------- */
.fleet-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.fleet-card { margin: 0; }
.fleet-carousel {
  position: relative;
  height: 420px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  background: var(--cream-2);
}
.fleet-track {
  display: flex;
  height: 100%;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
}
.fleet-track::-webkit-scrollbar { display: none; }
.fleet-slide {
  flex: 0 0 100%;
  height: 100%;
  scroll-snap-align: start;
}
.fleet-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.fleet-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 42px; height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: rgba(20, 12, 11, .45);
  color: var(--white);
  cursor: pointer;
  transition: background-color .25s var(--ease), transform .25s var(--ease);
  z-index: 2;
}
.fleet-nav:hover { background: rgba(20, 12, 11, .7); }
.fleet-nav svg { width: 22px; height: 22px; }
.fleet-nav-prev { left: 14px; }
.fleet-nav-next { right: 14px; }
.fleet-dots {
  position: absolute;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}
.fleet-dot {
  width: 8px; height: 8px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,.55);
  cursor: pointer;
  transition: background-color .25s var(--ease), transform .25s var(--ease);
}
.fleet-dot.is-active { background: var(--white); transform: scale(1.25); }
.fleet-card figcaption {
  margin-top: 16px;
  font-family: var(--font-display);
  letter-spacing: .04em;
  text-transform: uppercase;
  font-size: .95rem;
  color: var(--ink);
}

/* ---------- Redes ---------- */
.redes-content {
  max-width: 620px;
  margin: 0 auto;
  text-align: center;
}
.redes-stat {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  font-weight: 700;
  color: var(--red-700);
  line-height: 1.1;
  margin-bottom: 18px;
}
.redes-stat span {
  display: block;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink);
  margin-top: 6px;
}
.redes-text {
  color: var(--stone);
  font-size: 1.05rem;
  margin-bottom: 28px;
}
.redes-socials {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}
.redes-social {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 2px solid rgba(122, 22, 29, .25);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: .85rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  transition: transform .3s var(--ease), background-color .3s var(--ease), border-color .3s var(--ease), color .3s var(--ease);
}
.redes-social .icon { width: 20px; height: 20px; flex-shrink: 0; }
.redes-social:hover {
  background: var(--red-700);
  border-color: var(--red-700);
  color: var(--white);
  transform: translateY(-3px);
}

/* ---------- Cobertura ---------- */
.cobertura {
  position: relative;
  min-height: 620px;
  padding: 100px 0;
  overflow: hidden;
  isolation: isolate;
  background: var(--cream);
}
.cobertura-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
  z-index: -1;
}
.cobertura-content {
  max-width: 640px;
  text-align: center;
  margin: 0 auto;
}
.cobertura-content h2 { font-size: clamp(2rem, 4.5vw, 3rem); color: var(--ink); }
.cobertura-content p { color: var(--stone); font-size: 1.08rem; }

/* ---------- Contacto ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-cards { display: grid; gap: 16px; }
.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius);
  transition: transform .3s var(--ease), background-color .3s var(--ease), border-color .3s var(--ease);
}
.contact-card:hover {
  transform: translateX(6px);
  background: rgba(255,255,255,.05);
  border-color: var(--red-600);
}
.contact-card .icon { width: 24px; height: 24px; color: var(--red-500); flex-shrink: 0; }
.contact-card strong { display: block; font-family: var(--font-display); letter-spacing: .03em; text-transform: uppercase; font-size: .95rem; }
.contact-card span { color: rgba(255,255,255,.7); font-size: .9rem; }

.contact-form {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 30px;
  display: grid;
  gap: 16px;
}
.form-note { color: rgba(255,255,255,.7); font-size: .92rem; margin-bottom: 4px; }
.contact-form label {
  display: grid;
  gap: 8px;
  font-size: .82rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  font-family: var(--font-display);
  color: rgba(255,255,255,.8);
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  background: rgba(0,0,0,.25);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--white);
  font-family: var(--font-body);
  font-size: .95rem;
  resize: vertical;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--red-500);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--black);
  color: var(--white);
  padding: 56px 0 30px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}
.footer-inner .brand-logo { height: 56px; }
.footer-tagline { font-family: var(--font-display); letter-spacing: .05em; text-transform: uppercase; color: var(--cream); font-size: .95rem; margin: 0; }
.footer-nav { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; }
.footer-nav a { font-size: .85rem; letter-spacing: .05em; text-transform: uppercase; color: rgba(255,255,255,.75); }
.footer-nav a:hover { color: var(--red-500); }
.footer-copy { color: rgba(255,255,255,.45); font-size: .8rem; margin: 12px 0 0; }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px; height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--red-700);
  color: var(--white);
  border-radius: 50%;
  box-shadow: 0 10px 24px -8px rgba(0,0,0,.5);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity .3s var(--ease), transform .3s var(--ease), background-color .3s var(--ease);
  z-index: 90;
}
.to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.to-top:hover { background: var(--red-600); }
.to-top .icon { width: 20px; height: 20px; }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.pillars .reveal:nth-child(2) { transition-delay: .08s; }
.pillars .reveal:nth-child(3) { transition-delay: .16s; }
.services-grid .reveal:nth-child(2) { transition-delay: .08s; }
.services-grid .reveal:nth-child(3) { transition-delay: .16s; }
.fleet-grid .reveal:nth-child(2) { transition-delay: .1s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-media img { animation: none; }
  .scroll-cue svg { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .pillars, .services-grid { grid-template-columns: 1fr; }
  .fleet-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (min-width: 861px) {
  .hero-content { margin: 0; }
}

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(320px, 82vw);
    background: var(--black);
    padding: 110px 32px 40px;
    transform: translateX(100%);
    transition: transform .4s var(--ease);
    box-shadow: -20px 0 40px rgba(0,0,0,.35);
  }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; gap: 26px; }
  .main-nav a { font-size: 1rem; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
}

@media (max-width: 600px) {
  .section { padding: 80px 0; }
  .hero-content { padding-top: 70px; }
  .cobertura { min-height: 480px; padding: 70px 0; }
  .fleet-carousel { height: 300px; }
  .fleet-nav { width: 36px; height: 36px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
}