/* =========================================================
   AGROPHYL — sistema de diseño
   Paleta: Follaje profundo / Verde Agrophyl / Ámbar / Hueso / Brote
   Firma: "espiga de crecimiento" — nodos + tallo entre secciones
   ========================================================= */

:root {
  --follaje: #0d2b12;
  --follaje-2: #143a1a;
  --verde: #1b5e20;
  --verde-linea: #2e7d32;
  --ambar: #f9a825;
  --ambar-suave: #fff3d9;
  --hueso: #fdf8ef;
  --brote: #cfead2;
  --tinta: #14180f;
  --gris-texto: #52564c;
  --borde: #e4e0d2;
  --blanco: #ffffff;

  --f-display: 'Montserrat', sans-serif;
  --f-body: 'Inter', sans-serif;
  --f-data: 'Barlow Condensed', sans-serif;

  --radius: 14px;
  --shadow: 0 18px 40px rgba(13, 43, 18, 0.10);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--f-body);
  color: var(--tinta);
  background: var(--hueso);
  line-height: 1.6;
}

.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: var(--f-display); color: var(--tinta); margin: 0 0 16px; line-height: 1.1; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { padding-left: 0; margin: 0; list-style: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

/* ===== Eyebrows ===== */
.eyebrow {
  font-family: var(--f-data);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--verde);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.eyebrow.center { justify-content: center; }
.eyebrow-light { color: var(--ambar); }
.eyebrow::before {
  content: '';
  width: 14px;
  height: 14px;
  flex: none;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 21C7 17 4 13 4 9a8 8 0 0 1 16 0c0 4-3 8-8 12Z' fill='none' stroke='%231b5e20' stroke-width='2'/%3E%3Cpath d='M12 21V9' stroke='%231b5e20' stroke-width='2'/%3E%3C/svg%3E") no-repeat center / contain;
}
.eyebrow-light::before {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 21C7 17 4 13 4 9a8 8 0 0 1 16 0c0 4-3 8-8 12Z' fill='none' stroke='%23f9a825' stroke-width='2'/%3E%3Cpath d='M12 21V9' stroke='%23f9a825' stroke-width='2'/%3E%3C/svg%3E") no-repeat center / contain;
}

.section-title { font-size: clamp(1.7rem, 3vw, 2.5rem); font-weight: 800; letter-spacing: -0.01em; }
.section-title.center { text-align: center; }
.section-lead { color: var(--gris-texto); max-width: 640px; margin: 0 auto 32px; }
.section-lead.center { text-align: center; }

/* ===== Botones ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-family: var(--f-data);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.2s var(--ease), background 0.2s ease, box-shadow 0.2s ease;
}
.btn-primary { background: var(--ambar); color: var(--tinta); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(249, 168, 37, 0.35); }
.btn-outline { background: transparent; border-color: rgba(255,255,255,0.5); color: var(--blanco); }
.btn-outline:hover { border-color: var(--ambar); color: var(--ambar); transform: translateY(-2px); }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 43, 18, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-name {
  font-family: var(--f-display);
  font-weight: 800;
  letter-spacing: 0.02em;
  font-size: 1.2rem;
  color: var(--blanco);
}
.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a {
  font-family: var(--f-data);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: 0.03em;
  color: rgba(255,255,255,0.85);
}
.main-nav a:hover { color: var(--ambar); }
.nav-cta {
  background: var(--ambar);
  color: var(--tinta) !important;
  padding: 9px 20px;
  border-radius: 8px;
  text-transform: uppercase;
}
.nav-cta:hover { background: #ffb84d; color: var(--tinta) !important; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--blanco); }

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--follaje);
  color: var(--blanco);
  padding: 100px 0 64px;
}

/* Fotos de fondo: reemplazá los archivos en /assets para cambiarlas.
   Alternan con un crossfade automático + zoom lento (Ken Burns). */
.hero-photos { position: absolute; inset: 0; z-index: 0; }
.hero-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  filter: grayscale(30%) brightness(0.6) saturate(1.1);
  opacity: 0;
  animation: heroCrossfade 18s infinite;
}
.hero-photo--field {
  background-image: url("assets/hero-campo.jpg");
  animation-delay: 0s;
}
.hero-photo--animal {
  background-image: url("assets/hero-animales.jpg");
  animation-delay: -9s; /* medio ciclo desfasado: alterna con la otra foto */
}
@keyframes heroCrossfade {
  0%    { opacity: 0; transform: scale(1.06); }
  4%    { opacity: 1; }
  46%   { opacity: 1; transform: scale(1.13); }
  50%   { opacity: 0; transform: scale(1.13); }
  100%  { opacity: 0; }
}
.hero-photo-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(13,43,18,0.55) 0%, rgba(13,43,18,0.72) 55%, rgba(6,15,8,0.88) 100%),
    radial-gradient(120% 100% at 15% 0%, rgba(20,58,26,0.4) 0%, transparent 60%);
}
@media (prefers-reduced-motion: reduce) {
  .hero-photo { animation: none; opacity: 0; transform: none; }
  .hero-photo--field { opacity: 1; }
}
.hero-organic { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-organic svg { width: 100%; height: 100%; }
.vine-path { stroke-dasharray: 2000; stroke-dashoffset: 2000; animation: draw 2.6s var(--ease) forwards 0.3s; }
@keyframes draw { to { stroke-dashoffset: 0; } }

.hero-inner { position: relative; z-index: 1; text-align: center; max-width: 780px; margin: 0 auto; }
.hero h1 { color: var(--blanco); font-size: clamp(2.2rem, 5.5vw, 3.6rem); font-weight: 900; letter-spacing: -0.01em; }
.hero h1 .accent { color: var(--ambar); }
.hero-lead { font-size: 1.12rem; opacity: 0.85; max-width: 600px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 56px; flex-wrap: wrap; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 36px;
}
.stat { text-align: center; }
.stat-num { display: block; font-family: var(--f-display); font-size: 2.5rem; font-weight: 900; color: var(--ambar); }
.stat-label { display: block; font-size: 0.85rem; opacity: 0.8; margin-top: 4px; }
.stat-footnote { font-size: 0.75rem; opacity: 0.55; margin-top: 20px; text-align: center; }

/* ===== Secciones + nodo de crecimiento ===== */
.section { position: relative; padding: 88px 0; }
.section.alt { background: var(--brote); background: linear-gradient(180deg, #f1f6ee, var(--hueso)); }

.section:not(.hero)::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 2px; height: 48px;
  background: linear-gradient(to bottom, transparent, var(--verde-linea) 70%, var(--verde-linea));
}
.section:not(.hero)::after {
  content: '';
  position: absolute;
  top: 44px; left: 50%;
  transform: translate(-50%, -50%);
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--ambar);
  box-shadow: 0 0 0 5px var(--brote);
}

/* ===== Reveal on scroll ===== */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* ===== Marcas ===== */
.brands-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.brands-grid--two { grid-template-columns: repeat(2, 1fr); max-width: 780px; margin-left: auto; margin-right: auto; }
.brand-card {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  clip-path: polygon(0 0, 92% 0, 100% 10%, 100% 100%, 0 100%);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.brand-card:hover { transform: translateY(-4px); box-shadow: 0 22px 44px rgba(13,43,18,0.14); }
.brand-card h3 { font-size: 1.3rem; margin-bottom: 4px; }
.brand-card h3 span { color: var(--verde); font-weight: 600; }
.brand-tag {
  font-family: var(--f-data);
  color: #a06a00;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  font-weight: 600;
  margin-bottom: 12px;
}
.brand-card p:last-child { color: var(--gris-texto); margin: 0; font-size: 0.95rem; }

/* ===== Nosotros ===== */
.nosotros-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: start; }
.check-list li { position: relative; padding-left: 28px; margin-bottom: 10px; color: var(--gris-texto); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--verde); font-weight: 700; }
.nosotros-card {
  background: linear-gradient(160deg, var(--verde), var(--follaje-2));
  color: var(--blanco);
  border-radius: var(--radius);
  padding: 28px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 8% 100%, 0 88%);
}
.nosotros-card-eyebrow { font-family: var(--f-data); text-transform: uppercase; letter-spacing: 0.1em; color: var(--ambar); font-size: 0.8rem; margin-bottom: 14px; }
.nosotros-list li { margin-bottom: 12px; font-size: 0.95rem; }

/* ===== Productos: Tabs ===== */
.tabs { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin: 32px 0 40px; }
.tab {
  font-family: var(--f-data);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: var(--blanco);
  border: 1.5px solid var(--borde);
  color: var(--tinta);
  padding: 10px 20px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}
.tab:hover { border-color: var(--verde); }
.tab.active { background: var(--verde); border-color: var(--verde); color: var(--blanco); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.products-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.product-card {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.product-card:hover { transform: translateY(-3px); box-shadow: 0 20px 40px rgba(13,43,18,0.12); }
.product-card--placeholder { border-style: dashed; background: transparent; box-shadow: none; }
.product-card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 6px; }
.product-card h3 { font-size: 1.2rem; margin: 0; }
.product-card h3 span { color: var(--verde); font-weight: 700; }

.pill {
  font-family: var(--f-data);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.pill-green { background: var(--brote); color: var(--verde); }
.pill-orange { background: var(--ambar-suave); color: #9a6a00; }
.pill-muted { background: var(--borde); color: var(--gris-texto); }

.product-sub { font-weight: 600; color: var(--verde); font-size: 0.9rem; margin-bottom: 10px; }
.product-card > p:not(.product-sub) { color: var(--gris-texto); font-size: 0.95rem; }

.species-icons { display: flex; gap: 8px; margin-bottom: 12px; }
.icon-species {
  width: 26px; height: 26px;
  padding: 5px;
  color: var(--verde);
  background: var(--brote);
  border-radius: 50%;
}

.details-toggle {
  background: none; border: none; color: var(--verde);
  font-family: var(--f-data); font-weight: 600; letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer; padding: 6px 0; margin-top: 8px; font-size: 0.88rem;
}
.product-details { display: none; margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--borde); }
.product-details.open { display: block; }
.product-details ul { display: flex; flex-direction: column; gap: 8px; }
.product-details li { font-size: 0.88rem; color: var(--gris-texto); }
.product-details strong { color: var(--tinta); }

/* ===== Distribuidores ===== */
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 720px; margin: 40px auto 0; text-align: center; }
.stat-block .stat-num { color: var(--verde); display: block; font-size: 2.2rem; font-weight: 900; font-family: var(--f-display); }
.stat-block .stat-label { color: var(--gris-texto); font-size: 0.85rem; }
.cta-box { text-align: center; margin-top: 40px; }
.cta-box p { font-weight: 600; margin-bottom: 16px; }
.section .btn-primary { color: var(--tinta); }

/* ===== Novedades ===== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.news-card {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform 0.25s var(--ease);
}
.news-card:hover { transform: translateY(-3px); }
.news-tag { font-family: var(--f-data); color: #a06a00; text-transform: uppercase; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.06em; margin-bottom: 10px; }
.news-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.news-card p:last-child { color: var(--gris-texto); font-size: 0.9rem; margin: 0; }

/* ===== Contacto ===== */
.contacto-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-list { margin: 24px 0; }
.contact-list li { display: flex; flex-direction: column; gap: 2px; margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--borde); }
.contact-list strong { font-family: var(--f-data); text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.8rem; color: var(--verde); }
.contact-list a { color: var(--verde); font-weight: 600; }
.contact-list a:hover { color: var(--ambar); }
.note { font-size: 0.82rem; color: var(--gris-texto); }
.note.center { text-align: center; margin-top: 20px; }

.contact-form {
  background: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-form label { display: flex; flex-direction: column; gap: 6px; font-size: 0.85rem; font-weight: 600; color: var(--tinta); }
.contact-form input, .contact-form textarea {
  font-family: var(--f-body);
  font-size: 0.95rem;
  padding: 10px 12px;
  border: 1px solid var(--borde);
  border-radius: 8px;
  resize: vertical;
}
.contact-form input:focus, .contact-form textarea:focus { outline: 2px solid var(--verde); outline-offset: 1px; }
.form-note { font-size: 0.85rem; color: var(--verde); font-weight: 600; min-height: 1.2em; }

/* ===== Footer ===== */
.site-footer { background: var(--follaje); color: var(--blanco); padding: 48px 0 0; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,0.12); }
.footer-brand .brand-name { color: var(--ambar); }
.footer-brand p { color: rgba(255,255,255,0.65); font-size: 0.85rem; max-width: 320px; margin-top: 8px; }
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; align-items: flex-start; }
.footer-nav a { font-family: var(--f-data); font-size: 0.9rem; color: rgba(255,255,255,0.8); }
.footer-nav a:hover { color: var(--ambar); }
.footer-bottom { padding: 20px 24px; font-size: 0.8rem; color: rgba(255,255,255,0.45); text-align: center; }

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .main-nav.open {
    display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--follaje); padding: 20px 24px; gap: 18px; border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .brands-grid { grid-template-columns: 1fr; }
  .nosotros-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; gap: 32px; }
  .news-grid { grid-template-columns: 1fr; }
  .contacto-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; gap: 28px; }
}