/* ============================================================
   AlbardonBio — hoja de estilos estática
   Reconstrucción fiel del diseño original (WordPress + Elementor)
   Sin frameworks. CSS moderno: custom properties, grid, flexbox.
   Paleta y tipografías tomadas del kit de Elementor original:
   primario #3E4545 · secundario #F2F3F4 · acento #F5B418
   ============================================================ */

/* ---------- Tipografías autohospedadas (variables) ---------- */
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url('../fonts/roboto-var-latin.woff2') format('woff2');
}
@font-face {
  font-family: 'Roboto Slab';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/roboto-slab-var-latin.woff2') format('woff2');
}

/* ---------- Variables de diseño ---------- */
:root {
  --c-primary: #3E4545;    /* texto y fondos oscuros */
  --c-secondary: #F2F3F4;  /* texto claro sobre fondos oscuros */
  --c-accent: #F5B418;     /* amarillo de marca */
  --c-muted: #717171;      /* subtítulos de tarjetas */
  --c-arrow: #47525273;    /* flechas del carrusel de logos */
  --container: 1140px;
}

/* ---------- Reset básico ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Roboto', ui-sans-serif, system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  font-weight: 400;
  color: var(--c-primary);
  background: #fff;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
picture { display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; background: none; border: none; cursor: pointer; }

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1rem;
}

/* Accesibilidad: link "saltar al contenido" */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--c-accent);
  color: var(--c-primary);
  padding: 0.5rem 1rem;
}
.skip-link:focus { left: 0; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: relative;
  background: var(--c-primary);
  z-index: 100;
}
.site-header .header-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--container);
  margin-inline: auto;
  padding: 20px 1rem 30px;
}
.header-logo img { width: 177px; height: 52px; }

.nav-desktop ul {
  display: flex;
  align-items: center;
}
.nav-desktop a {
  display: inline-block;
  color: var(--c-secondary);
  font-size: 1rem;
  padding: 8px 10px;
  margin-inline: 10px;
  position: relative;
  transition: color 0.2s;
}
/* puntero "underline" como el original */
.nav-desktop a::after {
  content: '';
  position: absolute;
  left: 10px; right: 10px; bottom: 2px;
  height: 2px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-desktop a:hover::after,
.nav-desktop a[aria-current="page"]::after { transform: scaleX(1); }
.nav-desktop a[aria-current="page"] { color: var(--c-accent); }

/* Botón hamburguesa (tablet y mobile, como el original) */
.menu-toggle {
  display: none;
  color: var(--c-accent);
  padding: 0.25rem;
}
.menu-toggle svg { fill: currentColor; width: 28px; height: 28px; }

.nav-mobile {
  display: none;
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  background: var(--c-primary);
  border-top: 1px solid rgba(242, 243, 244, 0.12);
  border-radius: 0 0 14px 14px;
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  z-index: 99;
}
.nav-mobile.open { display: block; }
.nav-mobile ul { padding: 4px 0 10px; }
.nav-mobile li + li a { border-top: 1px solid rgba(242, 243, 244, 0.08); }
.nav-mobile a {
  display: block;
  color: var(--c-secondary);
  text-align: left;
  padding: 14px 24px;
  font-size: 1.05rem;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.nav-mobile a:hover, .nav-mobile a:active, .nav-mobile a[aria-current="page"] {
  color: var(--c-accent);
  border-left-color: var(--c-accent);
  background: rgba(245, 180, 24, 0.10);
}
@media (prefers-reduced-motion: no-preference) {
  .nav-mobile.open { animation: menu-in 0.22s ease; }
}
@keyframes menu-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 1024px) {
  .nav-desktop { display: none; }
  .menu-toggle { display: inline-flex; }
}

.hidden { display: none !important; }

/* ============================================================
   HERO (video de fondo)
   ============================================================ */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: url('../img/hero-poster.jpg') 50% 50% / cover no-repeat;
  padding: 2rem 1rem;
}
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: var(--c-primary);
  opacity: 0.2;
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-content h1 {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  color: var(--c-secondary);
  font-size: 60px;
  line-height: 1;
  text-transform: uppercase;
  text-align: center;
}
.hero-content .hero-line1 { font-weight: 300; }
.hero-content .hero-line2 { font-weight: 500; }
@media (max-width: 1024px) {
  .hero-content h1 { font-size: 37px; }
}
@media (max-width: 767px) {
  .hero-content h1 { font-size: 30px; }
}

/* ============================================================
   EL PRODUCTO
   ============================================================ */
.producto { padding: 4rem 0; }

.section-title {
  text-align: center;
  color: var(--c-accent);
  font-size: 2rem;
  font-weight: 400;
  line-height: 1;
  text-transform: capitalize;
}
@media (max-width: 1024px) { .section-title { font-size: 25px; } }
@media (max-width: 767px)  { .section-title { font-size: 22px; } }

.producto-intro {
  text-align: center;
  max-width: 70%;
  margin: 1rem auto 0;
}
.producto-intro strong { font-weight: 700; }
@media (max-width: 1024px) {
  .producto-intro { max-width: 622px; margin-top: 0; }
}
@media (max-width: 767px) {
  .producto-intro { max-width: 100%; padding-inline: 1rem; }
}

.producto-cards {
  display: flex;
  gap: 60px;
  align-items: stretch;
  justify-content: space-between;
  max-width: var(--container);
  margin: 2.5rem auto 0;
  padding-inline: 1rem;
}
.producto-card {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.25);
  padding: 20px;
}
.producto-card .icon svg {
  height: 75px;
  width: 75px;
  fill: var(--c-accent);
}
.producto-card h3 {
  text-align: center;
  font-size: 25px;
  font-weight: 600;
  line-height: 1;
  margin-top: 20px;
}
.producto-card p {
  text-align: center;
  color: var(--c-muted);
  font-size: 16px;
  line-height: 22px;
  margin-top: 20px;
}
@media (max-width: 1024px) {
  .producto-cards { gap: 20px; }
}
@media (max-width: 767px) {
  .producto-cards { flex-direction: column; gap: 40px; }
}

/* ============================================================
   GEI (ahorro de emisiones)
   ============================================================ */
.gei {
  position: relative;
  min-height: 450px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 1rem;
  background: url('../img/planta-biodiesel.jpg') center center / cover no-repeat;
}
.webp .gei { background-image: url('../img/planta-biodiesel.webp'); }
.gei::before {
  content: '';
  position: absolute;
  inset: 0;
  /* overlay original: #F5B41859 con opacidad 0.5 */
  background: #F5B41859;
  opacity: 0.5;
}
.gei-panel {
  position: relative;
  width: 100%;
  max-width: 793px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: #fff;
  border-radius: 20px;
  padding: 30px;
}
.gei-headings h2 {
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
}
.gei-headings .gei-note {
  font-size: 13px;
  font-weight: 400;
  line-height: 1;
  margin-top: 20px;
}
/* Contador (solo versión EN) */
.gei-counter { text-align: center; }
.gei-counter .counter-number {
  display: block;
  color: var(--c-accent);
  font-size: 40px;
  font-weight: 600;
  line-height: 1;
}
.gei-counter .counter-title {
  color: var(--c-accent);
  font-size: 1rem;
  line-height: 2.5;
  text-align: center;
  white-space: pre-wrap;
}
@media (max-width: 767px) {
  .gei { min-height: 700px; }
  .gei-panel {
    flex-direction: column;
    justify-content: center;
    padding: 19px;
  }
  .gei-headings h2 { font-size: 15px; line-height: 1.3em; text-align: center; }
  .gei-headings .gei-note { text-align: center; }
  .gei-counter .counter-number { font-size: 28px; }
}

/* ============================================================
   NOVEDADES
   ============================================================ */
.novedades { padding: 4rem 0; }
.novedades-grid {
  max-width: 871px;
  margin: 2.5rem auto 0;
  padding-inline: 1rem;
  display: flex;
  gap: 30px;
}
.novedad-card {
  /* 3 tarjetas por vista en el original (solo hay 1 publicada) */
  width: calc((100% - 60px) / 3);
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 10px 10px 0 rgba(0, 0, 0, 0.2);
  padding: 15px 10px 20px;
}
.novedad-card .thumb img { border-radius: 10px; width: 100%; height: auto; }
.novedad-card time {
  display: block;
  color: var(--c-accent);
  font-size: 14px;
  margin-top: 20px;
}
.novedad-card h3 { margin-top: 20px; }
.novedad-card h3 a {
  color: var(--c-primary);
  font-size: 20px;
  font-weight: 500;
  line-height: 1;
}
.novedad-card .excerpt {
  font-size: 16px;
  margin-top: 20px;
}
.novedades-dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 21px;
}
.novedades-dots span {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--c-primary);
}
@media (max-width: 1024px) {
  .novedad-card { width: calc((100% - 30px) / 2); }
}
@media (max-width: 767px) {
  .novedades-grid { padding-inline: 15px; }
  .novedad-card { width: 100%; }
}

/* ============================================================
   CARRUSEL DE LOGOS
   ============================================================ */
.logos { padding: 2rem 0 4rem; }
.logos-wrapper {
  position: relative;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1rem;
}
.logos-viewport { overflow: hidden; }
.logos-track {
  display: flex;
  align-items: center;
  transition: transform 0.5s ease;
}
.logos-slide {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logos-slide img {
  width: 170px;
  height: 150px;
  object-fit: contain;
}
.logos-prev, .logos-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  color: var(--c-arrow);
  padding: 0.25rem;
}
.logos-prev { left: 10px; }
.logos-next { right: 10px; }
.logos-prev svg, .logos-next svg { fill: currentColor; width: 30px; height: 30px; }

/* ============================================================
   CONTACTO (plantilla de pie común a todas las páginas)
   ============================================================ */
.contacto {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('../img/contacto-refineria.jpg') center center / cover no-repeat;
  padding: 2rem 1rem;
}
.webp .contacto { background-image: url('../img/contacto-refineria.webp'); }
.contacto-inner {
  width: 100%;
  max-width: var(--container);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}
.contacto-info, .contacto-form { width: 50%; }
.contacto-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.icon-box {
  display: flex;
  align-items: flex-start;
  gap: 15px;
}
.icon-box + .icon-box { margin-top: 20px; }
.icon-box .icon { flex: 0 0 auto; }
.icon-box .icon svg { width: 32px; height: 32px; }
.icon-box .icon .fill-icon { fill: #fff; }
.icon-box h3 {
  color: #fff;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.2;
}
.icon-box h3 a { color: #fff; }
.icon-box p {
  color: var(--c-secondary);
  margin-top: 0.25rem;
}

/* Formulario */
.contact-form { display: flex; flex-direction: column; }
.contact-form .field { margin-bottom: 10px; padding-inline: 5px; }
.contact-form label {
  display: block;
  color: var(--c-secondary);
  font-size: 0.875rem;
  margin-bottom: 4px;
}
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  width: 100%;
  background: #ffffff;
  border: 1px solid #ffffff;
  border-radius: 3px;
  padding: 8px 12px;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--c-primary);
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: 2px solid var(--c-accent);
  outline-offset: 1px;
}
.contact-form textarea { resize: vertical; }
.contact-form .btn-submit {
  width: 100%;
  background: var(--c-accent);
  color: #ffffff;
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 10px 24px;
  border-radius: 3px;
  transition: filter 0.2s;
}
.contact-form .btn-submit:hover { filter: brightness(1.05); }
.contact-form .btn-submit:disabled { opacity: 0.6; cursor: wait; }

/* Honeypot anti-spam: oculto para humanos */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px; height: 1px;
  overflow: hidden;
}

.form-status {
  font-size: 0.875rem;
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  margin: 0 5px 10px;
  display: none;
}
.form-status.ok { display: block; background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.form-status.error { display: block; background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

@media (max-width: 1024px) {
  .contacto { min-height: 374px; padding: 50px; }
  .contacto-inner { flex-direction: column-reverse; }
  .contacto-info, .contacto-form { width: 100%; }
  .contacto-info { padding: 50px 50px 50px 0; }
}
@media (max-width: 767px) {
  .contacto { padding: 20px; }
  .contacto-info { min-height: 275px; padding: 50px 0 0; }
  .icon-box { flex-direction: column; align-items: center; text-align: center; }
}

/* ============================================================
   PÁGINA "ARCHIVOS" (institucional y post: así están en el
   WordPress original, sin contenido cargado)
   ============================================================ */
.page-header {
  max-width: var(--container);
  margin-inline: auto;
  padding: 3rem 1rem;
}
.page-header h1 {
  font-size: 2rem;
  font-weight: 600;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--c-primary);
  border-top: 1px solid var(--c-secondary);
}
.footer-inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 20px 1rem 30px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}
.footer-logo img { width: 177px; height: 52px; }
.footer-menu ul { display: flex; align-items: center; }
.footer-menu a {
  display: inline-block;
  color: var(--c-secondary);
  padding: 8px 10px;
  margin-inline: 10px;
  transition: color 0.2s;
}
.footer-menu a:hover { color: var(--c-accent); }
@media (max-width: 767px) {
  .footer-inner {
    flex-direction: column;
    align-items: center;
  }
  .footer-menu ul { flex-direction: column; }
  .footer-menu a { padding: 8px 4px; margin-inline: 1px; text-align: center; }
}

/* ============================================================
   Animaciones de entrada (reemplazo vanilla del fadeIn original)
   ============================================================ */
[data-aos] {
  opacity: 0;
  transition: opacity 1.2s ease, transform 1.2s ease;
}
[data-aos="fade-up"] { transform: translateY(30px); }
[data-aos].aos-animate {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-aos] { opacity: 1; transform: none; transition: none; }
  .logos-track { transition: none; }
}