/* Mantenimiento Preventivo — estilos propios, sin frameworks */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f6f6f4;
  --color-text: #1c1c1c;
  --color-text-soft: #4a4a4a;
  --color-dark: #171717;
  --color-primary: #f5a623;
  --color-primary-dark: #d98c0f;
  --color-accent: #171717;
  --color-border: #e4e2dd;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  --max-width: 1180px;
  --font-base: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
}

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

a {
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-dark);
  color: #fff;
  padding: 10px 16px;
  z-index: 100;
  border-radius: 0 0 8px 0;
}

.skip-link:focus {
  left: 0;
}

section {
  padding: 72px 0;
}

h1, h2, h3 {
  line-height: 1.2;
  margin: 0 0 16px;
}

h2 {
  font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.3rem);
}

.section-title {
  text-align: center;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  display: inline-block;
  color: var(--color-primary-dark);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
  margin-bottom: 10px;
}

.section-lead {
  color: var(--color-text-soft);
  font-size: 1.05rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-dark);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-primary-dark);
}

.btn-outline {
  background: transparent;
  border-color: #ffffff55;
  color: #fff;
}

.btn-outline:hover,
.btn-outline:focus-visible {
  border-color: #fff;
  background: #ffffff1a;
}

.btn-dark {
  background: var(--color-dark);
  color: #fff;
}

.btn-dark:hover,
.btn-dark:focus-visible {
  background: #000;
}

/* ===== Topbar ===== */
.topbar {
  background: var(--color-dark);
  color: #e9e9e9;
  font-size: 0.85rem;
}

.topbar .container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
  padding-bottom: 8px;
}

.topbar a {
  text-decoration: none;
  color: inherit;
}

.topbar a:hover {
  color: var(--color-primary);
}

.topbar-contacts {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #ffffffee;
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand img {
  height: 42px;
  width: auto;
}

.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--color-dark);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-dark);
  margin: 5px 0;
  content: "";
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 26px;
  margin: 0;
  padding: 0;
}

.main-nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-primary-dark);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-cta .btn {
  padding: 10px 18px;
  font-size: 0.9rem;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #1b1b1b 0%, #262114 100%);
  color: #fff;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

/* Marca de agua: isotipo león + engranaje recortado del logo vertical
   (isotipo = 131×195 px dentro de 543×432, desde x 212 / y 26) */
.hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: 50%;
  left: 50%;
  height: 86%;
  aspect-ratio: 131 / 195;
  transform: translate(-78%, -50%);
  background: url("../img/logo/logo-mantenimiento-preventivo-vertical.png") no-repeat;
  background-size: 414.504% auto;
  background-position: 51.457% 10.97%;
  opacity: 0.13;
  filter: blur(1.5px);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 45%, #000 40%, transparent 100%);
  mask-image: radial-gradient(ellipse 70% 70% at 50% 45%, #000 40%, transparent 100%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-eyebrow {
  color: var(--color-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  margin-bottom: 14px;
  display: inline-block;
}

.hero h1 {
  font-size: clamp(2rem, 1.5rem + 2.2vw, 3.1rem);
  margin-bottom: 18px;
}

.hero p {
  color: #dcdcdc;
  font-size: 1.1rem;
  max-width: 50ch;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  color: #bdbdbd;
  font-size: 0.9rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-trust li::before {
  content: "✓ ";
  color: var(--color-primary);
  font-weight: 700;
}

.hero-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 5;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Beneficios ===== */
.benefits {
  background: var(--color-bg);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 44px;
}

.benefit-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 28px 22px;
  border: 1px solid var(--color-border);
}

.benefit-icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
  color: var(--color-dark);
}

.benefit-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.benefit-card p {
  color: var(--color-text-soft);
  font-size: 0.95rem;
  margin: 0;
}

/* ===== Servicios ===== */
.services {
  background: var(--color-bg-alt);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 44px;
}

.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.service-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.service-number {
  color: var(--color-primary-dark);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.service-card h3 {
  font-size: 1.15rem;
  margin: 10px 0 10px;
}

.service-card p {
  color: var(--color-text-soft);
  margin: 0;
  font-size: 0.95rem;
}

/* ===== Galería ===== */
.gallery {
  background: var(--color-bg);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 44px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-bg-alt);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 14px 16px 12px;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.78), transparent);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
}

/* ===== Nosotros ===== */
.about {
  background: var(--color-bg-alt);
}

.about .container {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 48px;
  align-items: center;
}

.about-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.about-stats {
  display: flex;
  gap: 28px;
  margin-top: 26px;
  flex-wrap: wrap;
}

.about-stat strong {
  display: block;
  font-size: 1.6rem;
  color: var(--color-primary-dark);
}

.about-stat span {
  color: var(--color-text-soft);
  font-size: 0.88rem;
}

/* ===== CTA / Contacto ===== */
.contact {
  background: var(--color-dark);
  color: #fff;
}

.contact .section-title {
  color: #fff;
}

.contact .section-lead {
  color: #cfcfcf;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 44px;
}

.contact-card {
  background: #ffffff10;
  border: 1px solid #ffffff22;
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
}

.contact-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.contact-card p {
  margin: 0 0 16px;
  color: #d8d8d8;
  font-size: 0.95rem;
}

.contact-note {
  text-align: center;
  margin-top: 36px;
  color: #a9a9a9;
  font-size: 0.85rem;
}

/* ===== Footer ===== */
.site-footer {
  background: #121212;
  color: #b7b7b7;
  padding: 48px 0 24px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
}

.footer-brand img {
  width: 200px;
  height: auto;
  padding: 6px;
  background: #fff;
  border-radius: var(--radius);
  margin-bottom: 14px;
}

.footer-brand p {
  max-width: 36ch;
  color: #9c9c9c;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 14px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  text-decoration: none;
  color: #b7b7b7;
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid #262626;
  margin-top: 36px;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: #7c7c7c;
  font-size: 0.82rem;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about .container {
    grid-template-columns: 1fr;
  }

  .about-media {
    max-width: 420px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-media {
    order: -1;
    aspect-ratio: 16 / 10;
  }

  /* En móvil la foto va arriba: la marca de agua queda detrás del texto */
  .hero::before {
    top: auto;
    bottom: 4%;
    left: auto;
    right: -12%;
    height: 52%;
    transform: none;
    opacity: 0.1;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }

  .main-nav.is-open {
    max-height: 420px;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 10px 20px 20px;
  }

  .main-nav li {
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav a {
    display: block;
    padding: 14px 0;
  }

  .header-cta .btn {
    padding: 8px 14px;
    font-size: 0.82rem;
  }

  .benefits-grid,
  .services-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  section {
    padding: 56px 0;
  }
}