/* ═══════════════════════════════════════════════════════════════════════════
   M.A.C. Mantenimiento — Design System
   Tema: Industrial oscuro | Naranja maquinaria | Rajdhani + Inter
   ═══════════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;600;700&display=swap');

/* ── Variables ─────────────────────────────────────────────────────────────── */
:root {
  --bg:          #FFFFFF;
  --surface-1:   #F9FAFB;
  --surface-2:   #F3F4F6;
  --surface-3:   #E5E7EB;
  --primary:     #E60000; /* Rojo MAC */
  --primary-d:   #B30000;
  --primary-glow:rgba(230, 0, 0, 0.08);
  --teal:        #0D9488;
  --text:        #111827;
  --text-muted:  #4B5563;
  --border:      rgba(0,0,0,0.1);
  --radius:      8px;
  --radius-lg:   16px;
  --transition:  all 0.25s ease;
  --shadow:      0 4px 24px rgba(0,0,0,0.06);
  --container:   1200px;
}

/* ── Reset ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Open Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ── Typography ────────────────────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: 'Open Sans', sans-serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
}
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
p  { color: var(--text-muted); }

/* ── Layout ────────────────────────────────────────────────────────────────── */
.container { max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.section    { padding: 6rem 0; }
.section--alt { background: var(--surface-1); }

/* ── Navbar ────────────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.nav__logo img { height: 44px; width: auto; }
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}
.nav__links a {
  font-family: 'Open Sans', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius);
  transition: var(--transition);
}
.nav__links a:hover,
.nav__links a.active {
  color: var(--primary);
  background: var(--primary-glow);
}
.nav__toggle { display: none; cursor: pointer; flex-direction: column; gap: 5px; }
.nav__toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text); border-radius: 2px; transition: var(--transition);
}

/* ── Hero ──────────────────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 70px;
  background: var(--bg);
}
.hero__bg {
  position: absolute; inset: 0;
  background: url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?auto=format&fit=crop&q=80') center/cover no-repeat;
}
.hero__bg::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(255, 255, 255, 0.88);
}
/* Swiper Custom Navigation */
.hero-swiper {
  --swiper-theme-color: var(--primary);
  --swiper-navigation-size: 18px;
}
.swiper-button-next, .swiper-button-prev {
  background: rgba(255, 255, 255, 0.75);
  width: 42px !important;
  height: 42px !important;
  border-radius: 50%;
  color: var(--primary) !important;
  z-index: 20 !important;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
  transition: var(--transition);
}
.swiper-button-next:hover, .swiper-button-prev:hover {
  background: #ffffff;
  transform: scale(1.05);
}
.swiper-button-next::after, .swiper-button-prev::after {
  font-size: 16px !important;
  font-weight: bold;
}
.swiper-pagination-bullet {
  width: 10px !important;
  height: 10px !important;
  background: var(--text) !important;
  opacity: 0.3 !important;
}
.swiper-pagination-bullet-active {
  background: var(--primary) !important;
  opacity: 1 !important;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}
.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Open Sans', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-glow);
  border: 1px solid rgba(230,0,0,0.25);
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}
.hero__title { color: var(--text); margin-bottom: 1.25rem; }
.hero__title span { color: var(--primary); }
.hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}
.hero__ctas { display: flex; flex-wrap: wrap; gap: 1rem; }

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Open Sans', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.btn--primary {
  background: var(--primary);
  color: #FFFFFF;
}
.btn--primary:hover {
  background: var(--primary-d);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230,0,0,0.35);
}
.btn--outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* ── Stats bar ─────────────────────────────────────────────────────────────── */
.stats {
  background: var(--surface-1);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 0;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  text-align: center;
}
.stats__item {}
.stats__number {
  font-family: 'Open Sans', sans-serif;
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}
.stats__label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ── Section header ────────────────────────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header__tag {
  font-family: 'Open Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.75rem;
}
.section-header__line {
  width: 48px; height: 2px;
  background: var(--primary);
  margin: 1rem auto 0;
}

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.grid { display: grid; gap: 1.5rem; }
.grid--3 { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.card:hover {
  border-color: rgba(230,0,0,0.35);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.1);
}
.card__image {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  background: var(--surface-2);
}
.card__image--placeholder {
  aspect-ratio: 16/9;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--surface-3);
  font-size: 2.5rem;
}
.card__body { padding: 1.5rem; }
.card__tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.card__title {
  font-family: 'Open Sans', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.card__desc { font-size: 0.9rem; color: var(--text-muted); }

/* Cert card variant */
.cert-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  transition: var(--transition);
}
.cert-card:hover {
  border-color: rgba(230,0,0,0.35);
  transform: translateY(-4px);
}
.cert-card__logo {
  width: 80px; height: 80px;
  object-fit: contain;
  border-radius: var(--radius);
}
.cert-card__logo--placeholder {
  width: 80px; height: 80px;
  background: var(--surface-2);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
}
.cert-card__name {
  font-family: 'Open Sans', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
}
.cert-card__link {
  font-size: 0.85rem;
  color: var(--primary);
  border: 1px solid rgba(230,0,0,0.3);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  transition: var(--transition);
}
.cert-card__link:hover { background: var(--primary-glow); }

/* ── CTA Band ──────────────────────────────────────────────────────────────── */
.cta-band {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-d) 100%);
  padding: 5rem 0;
  text-align: center;
}
.cta-band h2 { color: #FFFFFF; margin-bottom: 0.75rem; }
.cta-band p { color: rgba(255,255,255,0.9); margin-bottom: 2rem; font-size: 1.1rem; }
.btn--dark {
  background: #111827;
  color: #FFFFFF;
}
.btn--dark:hover {
  background: var(--surface-1);
  transform: translateY(-2px);
}

/* ── About ─────────────────────────────────────────────────────────────────── */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about__values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}
.value-item {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.value-item__icon { font-size: 1.5rem; margin-bottom: 0.5rem; }
.value-item__title {
  font-family: 'Open Sans', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 0.25rem;
}
.value-item__text { font-size: 0.85rem; color: var(--text-muted); }
.about__badge {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.about__repse {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.about__repse-icon {
  font-size: 2rem;
  flex-shrink: 0;
  color: var(--primary);
}
.about__repse h4 {
  font-family: 'Open Sans', sans-serif;
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 0.25rem;
}
.about__repse p { font-size: 0.85rem; }

/* ── Page hero (internal pages) ────────────────────────────────────────────── */
.page-hero {
  padding: 10rem 0 4rem;
  background:
    radial-gradient(ellipse 60% 80% at 20% 50%, rgba(230,0,0,0.05) 0%, transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
.page-hero__tag {
  font-family: 'Open Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.75rem;
}
.page-hero h1 { margin-bottom: 0.75rem; }
.page-hero p { font-size: 1.05rem; max-width: 520px; }

/* ── Contact ───────────────────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.contact-item__icon { font-size: 1.4rem; color: var(--primary); flex-shrink: 0; }
.contact-item__label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}
.contact-item__value { font-weight: 500; color: var(--text); }
.contact-team { margin-top: 1rem; }
.team-member {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.team-member:last-child { border: none; }
.team-member__avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--surface-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.team-member__name { font-family: 'Rajdhani', sans-serif; font-weight: 700; }
.team-member__role { font-size: 0.8rem; color: var(--text-muted); }
.contact-cta {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
.contact-cta__icon { font-size: 3.5rem; }
.contact-cta h3 { font-family: 'Rajdhani', sans-serif; font-size: 1.6rem; }
.contact-cta p { color: var(--text-muted); max-width: 320px; }

/* ── Flash messages ────────────────────────────────────────────────────────── */
.flash-container { position: fixed; top: 80px; right: 1.5rem; z-index: 200; display: flex; flex-direction: column; gap: 0.5rem; }
.flash {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid;
  animation: slideIn 0.25s ease;
  max-width: 340px;
}
.flash--success { background: rgba(45,212,191,0.1); border-color: rgba(45,212,191,0.3); color: #2DD4BF; }
.flash--danger  { background: rgba(239,68,68,0.1);  border-color: rgba(239,68,68,0.3);  color: #f87171; }
.flash--info    { background: rgba(99,102,241,0.1); border-color: rgba(99,102,241,0.3); color: #a5b4fc; }
.flash--warning { background: var(--primary-glow);  border-color: rgba(230,0,0,0.3); color: var(--primary); }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ── Footer ────────────────────────────────────────────────────────────────── */
.footer {
  background: var(--surface-1);
  border-top: 1px solid var(--border);
  padding: 3.5rem 0 1.5rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer__brand { display: flex; flex-direction: column; gap: 1rem; }
.footer__logo { height: 40px; width: auto; }
.footer__desc { font-size: 0.875rem; color: var(--text-muted); line-height: 1.7; }
.footer__heading {
  font-family: 'Open Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 1rem;
}
.footer__links { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.footer__links a { font-size: 0.875rem; color: var(--text-muted); transition: var(--transition); }
.footer__links a:hover { color: var(--primary); }
.footer__contact { display: flex; flex-direction: column; gap: 0.6rem; }
.footer__contact-item { font-size: 0.875rem; color: var(--text-muted); }
.footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .about__grid, .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav__links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg);
    padding: 1.5rem;
    gap: 1rem;
    border-top: 1px solid var(--border);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
    align-items: flex-start;
  }
  .nav__links.open { display: flex; }
  .nav__links li { width: 100%; border-bottom: 1px solid var(--surface-2); padding-bottom: 0.75rem; }
  .nav__links li:last-child { border-bottom: none; }
  .nav__links a { display: block; width: 100%; }
  .nav__toggle { display: flex; }
  .footer__grid { grid-template-columns: 1fr; }
  .about__values { grid-template-columns: 1fr; }
  .hero__ctas { flex-direction: column; }
  .hero__ctas .btn { width: 100%; justify-content: center; }
}

/* ── Utilities ─────────────────────────────────────────────────────────────── */
.text-primary { color: var(--primary); }
.text-muted   { color: var(--text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }