/* Tienda Unitropista — tokens visuales base.
   Paleta provisional: verde institucional + ambar/dorado acento. Ajustar cuando llegue brand kit oficial. */

:root {
  --color-primary: #2f6b3a;
  --color-primary-dark: #214d29;
  --color-primary-light: #e8f3ea;
  --color-accent: #c9a227;
  --color-accent-dark: #8b6f15;
  --color-bg: #fbfaf7;
  --color-surface: #ffffff;
  --color-text: #1e2a22;
  --color-text-muted: #6b7670;
  --color-border: #e5e2d8;
  --color-danger: #b8362c;
  --color-success: #2f6b3a;

  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;

  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;

  --shadow-sm: 0 1px 2px rgba(30, 42, 34, 0.06);
  --shadow-md: 0 4px 12px rgba(30, 42, 34, 0.08);
  --shadow-lg: 0 12px 32px rgba(30, 42, 34, 0.14);

  --max-w: 1200px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-display); margin: 0 0 var(--s-4); line-height: 1.2; color: var(--color-text); }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 var(--s-3); }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--s-5); }

/* ===== Header ===== */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--s-4) 0;
  position: sticky; top: 0; z-index: 50;
}
.site-header .row { display: flex; align-items: center; justify-content: space-between; gap: var(--s-5); }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--color-primary); line-height: 1; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-logo { height: 40px; width: auto; display: block; color: var(--color-primary); }
.brand-text { letter-spacing: 0.01em; }
.footer-logo { height: 64px; width: auto; display: block; margin-bottom: 0.5rem; border-radius: 4px; }
@media (max-width: 640px) { .brand-logo { height: 32px; } .brand-text { display: none; } }
.nav { display: flex; gap: var(--s-5); }
.nav a { color: var(--color-text); font-weight: 500; }
.nav a:hover { color: var(--color-primary); text-decoration: none; }

/* ===== Botones ===== */
.btn {
  display: inline-block;
  padding: var(--s-3) var(--s-5);
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-dark); text-decoration: none; color: white; }
.btn-accent { background: var(--color-accent); color: white; }
.btn-accent:hover { background: var(--color-accent-dark); text-decoration: none; color: white; }
.btn-outline { background: transparent; border-color: var(--color-primary); color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: white; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--color-text); }

/* ===== Hero ===== */
.hero {
  padding: var(--s-8) 0;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
}
.hero-content { max-width: 720px; }
.hero h1 { color: var(--color-primary-dark); }
.hero p { font-size: 1.125rem; color: var(--color-text-muted); margin-bottom: var(--s-5); }
.hero-cta { display: flex; gap: var(--s-3); flex-wrap: wrap; }

/* ===== Secciones ===== */
.section { padding: var(--s-7) 0; }
.section-title { text-align: center; margin-bottom: var(--s-6); }
.grid { display: grid; gap: var(--s-5); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* ===== Tarjetas ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  padding: var(--s-5);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product-card { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.product-card .img { aspect-ratio: 4/5; background: var(--color-primary-light); }
.product-card .body { padding: var(--s-4); }
.product-card .name { font-weight: 600; margin-bottom: var(--s-1); }
.product-card .price { color: var(--color-primary); font-weight: 700; }
.product-card .price-old { color: var(--color-text-muted); text-decoration: line-through; font-weight: 400; margin-right: var(--s-2); }

/* ===== Badges ===== */
.badge { display: inline-block; padding: 2px var(--s-2); border-radius: var(--r-sm); font-size: 0.75rem; font-weight: 600; }
.badge-accent { background: var(--color-accent); color: white; }
.badge-success { background: var(--color-success); color: white; }
.badge-muted { background: var(--color-primary-light); color: var(--color-primary-dark); }

/* ===== Forms ===== */
.form-field { margin-bottom: var(--s-4); }
.form-field label { display: block; font-weight: 500; margin-bottom: var(--s-1); font-size: 0.9rem; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%;
  padding: var(--s-3);
  border: 1px solid var(--color-border);
  border-radius: var(--r-md);
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-surface);
  color: var(--color-text);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}
.form-error { color: var(--color-danger); font-size: 0.85rem; margin-top: var(--s-1); }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-text);
  color: #d8d8d2;
  padding: var(--s-7) 0 var(--s-5);
  margin-top: var(--s-8);
}
.site-footer a { color: #d8d8d2; }
.site-footer .row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--s-5); }
.site-footer h4 { color: white; font-family: var(--font-body); font-size: 1rem; margin-bottom: var(--s-3); }
.site-footer .small { font-size: 0.85rem; color: #aaa; margin-top: var(--s-5); }

/* ===== Trust block ===== */
.trust { display: flex; gap: var(--s-5); justify-content: center; flex-wrap: wrap; padding: var(--s-5) 0; }
.trust-item { text-align: center; max-width: 200px; }
.trust-item strong { display: block; color: var(--color-primary); margin-bottom: var(--s-1); }

/* ===== Utilidades ===== */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-4 { margin-top: var(--s-4); }
.mb-4 { margin-bottom: var(--s-4); }
.hidden { display: none !important; }

/* ===== Hero con imagen ===== */
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: var(--s-7); align-items: center; }
.hero-img img { width: 100%; height: auto; border-radius: var(--r-xl); box-shadow: var(--shadow-lg); }

/* ===== Coleccion cards ===== */
.coleccion-card { display: block; position: relative; aspect-ratio: 4/5; border-radius: var(--r-lg); overflow: hidden; background: var(--color-primary); color: white; text-decoration: none; transition: transform 0.2s; }
.coleccion-card:hover { transform: translateY(-4px); text-decoration: none; }
.coleccion-card img { width: 100%; height: 100%; object-fit: cover; }
.coleccion-card .label { position: absolute; bottom: 0; left: 0; right: 0; padding: var(--s-4); background: linear-gradient(transparent, rgba(33, 77, 41, 0.85)); color: white; font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; }

/* ===== Testimonios ===== */
.testimonial { padding: var(--s-5); background: var(--color-surface); border-radius: var(--r-lg); border: 1px solid var(--color-border); }
.testimonial-quote { font-family: var(--font-display); font-size: 1.1rem; font-style: italic; color: var(--color-text); margin-bottom: var(--s-3); }
.testimonial-author { display: flex; align-items: center; gap: var(--s-3); }
.testimonial-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--color-primary-light); color: var(--color-primary-dark); display: flex; align-items: center; justify-content: center; font-weight: 700; }
.testimonial-meta { font-size: 0.85rem; color: var(--color-text-muted); }

/* ===== Noticias cards ===== */
.noticia-card { display: flex; flex-direction: column; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--r-lg); overflow: hidden; text-decoration: none; transition: box-shadow 0.15s; }
.noticia-card:hover { box-shadow: var(--shadow-md); text-decoration: none; }
.noticia-card .img { aspect-ratio: 16/9; background: var(--color-primary-light); }
.noticia-card .body { padding: var(--s-4); flex: 1; display: flex; flex-direction: column; }
.noticia-card .title { font-family: var(--font-display); font-size: 1.15rem; color: var(--color-text); margin-bottom: var(--s-2); }
.noticia-card .excerpt { color: var(--color-text-muted); font-size: 0.9rem; flex: 1; }
.noticia-card .meta { font-size: 0.8rem; color: var(--color-text-muted); margin-top: var(--s-3); }

/* ===== Newsletter ===== */
.newsletter { background: var(--color-text); color: white; padding: var(--s-7) 0; }
.newsletter h2 { color: white; }
.newsletter .form-row { display: flex; gap: var(--s-3); max-width: 520px; margin: 0 auto; flex-wrap: wrap; }
.newsletter .form-row input { flex: 1 1 240px; padding: var(--s-3); border-radius: var(--r-md); border: none; font-size: 1rem; }
.newsletter .form-row .btn { flex: 0 0 auto; }
.newsletter .consent { font-size: 0.85rem; color: #aaa; margin-top: var(--s-3); display: flex; align-items: center; gap: var(--s-2); justify-content: center; }

/* ===== Empty state ===== */
.empty-state { padding: var(--s-6); text-align: center; color: var(--color-text-muted); }

/* ===== Catalogo (Sprint 3) ===== */
.catalogo-layout { display: grid; grid-template-columns: 240px 1fr; gap: var(--s-5); align-items: start; }
.catalogo-sidebar { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--r-lg); padding: var(--s-4); position: sticky; top: 88px; }
.catalogo-sidebar h3 { font-family: var(--font-body); font-size: 0.95rem; margin-bottom: var(--s-3); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 1px; }
.catalogo-sidebar .filtro-group { margin-bottom: var(--s-4); }
.catalogo-sidebar label { display: flex; align-items: center; gap: var(--s-2); padding: var(--s-1) 0; cursor: pointer; font-size: 0.9rem; }
.catalogo-sidebar input[type="number"] { padding: var(--s-2); width: 100%; }
.catalogo-toolbar { display: flex; justify-content: space-between; align-items: center; gap: var(--s-3); margin-bottom: var(--s-4); flex-wrap: wrap; }
.search-bar { flex: 1 1 320px; max-width: 480px; position: relative; }
.search-bar input { padding-left: 40px; }
.search-bar::before { content: "🔍"; position: absolute; left: 12px; top: 50%; transform: translateY(-50%); opacity: 0.5; }
.catalogo-info { color: var(--color-text-muted); font-size: 0.9rem; }
.paginacion { display: flex; justify-content: center; gap: var(--s-2); margin-top: var(--s-6); }
.paginacion button { padding: var(--s-2) var(--s-4); border: 1px solid var(--color-border); border-radius: var(--r-md); background: var(--color-surface); cursor: pointer; }
.paginacion button.active { background: var(--color-primary); color: white; border-color: var(--color-primary); }
.paginacion button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== Producto detalle (Sprint 3) ===== */
.producto-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: var(--s-6); align-items: start; }
.producto-galeria .principal { aspect-ratio: 4/5; background: var(--color-primary-light); border-radius: var(--r-lg); overflow: hidden; }
.producto-galeria .principal img { width: 100%; height: 100%; object-fit: cover; }
.producto-galeria .miniaturas { display: flex; gap: var(--s-2); margin-top: var(--s-3); flex-wrap: wrap; }
.producto-galeria .miniaturas img { width: 72px; height: 72px; object-fit: cover; border-radius: var(--r-sm); border: 2px solid transparent; cursor: pointer; background: var(--color-primary-light); }
.producto-galeria .miniaturas img.active { border-color: var(--color-primary); }

.producto-info h1 { margin-bottom: var(--s-2); }
.producto-info .breadcrumb { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: var(--s-3); }
.producto-info .breadcrumb a { color: var(--color-text-muted); }
.producto-info .precio-block { display: flex; align-items: baseline; gap: var(--s-3); margin: var(--s-4) 0; }
.producto-info .precio-block .precio-actual { font-size: 2rem; color: var(--color-primary); font-weight: 700; }
.producto-info .precio-block .precio-tachado { font-size: 1.15rem; color: var(--color-text-muted); text-decoration: line-through; }
.producto-info .precio-block .descuento { background: var(--color-accent); color: white; padding: 2px var(--s-2); border-radius: var(--r-sm); font-weight: 600; font-size: 0.85rem; }

.variantes { margin: var(--s-4) 0; }
.variantes-label { font-weight: 600; margin-bottom: var(--s-2); }
.variantes-opciones { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.variante-chip { padding: var(--s-2) var(--s-3); border: 2px solid var(--color-border); border-radius: var(--r-md); background: var(--color-surface); cursor: pointer; font-size: 0.9rem; transition: all 0.15s; }
.variante-chip:hover { border-color: var(--color-primary); }
.variante-chip.active { border-color: var(--color-primary); background: var(--color-primary-light); }
.variante-chip.sin-stock { opacity: 0.4; cursor: not-allowed; text-decoration: line-through; }

.cantidad-control { display: flex; align-items: center; gap: var(--s-2); }
.cantidad-control button { width: 36px; height: 36px; border: 1px solid var(--color-border); border-radius: var(--r-md); background: var(--color-surface); cursor: pointer; font-size: 1.1rem; }
.cantidad-control input { width: 56px; text-align: center; }

.stock-info { font-size: 0.9rem; color: var(--color-success); margin-top: var(--s-2); }
.stock-info.bajo { color: var(--color-accent-dark); }
.stock-info.agotado { color: var(--color-danger); }

.producto-acciones { display: flex; gap: var(--s-3); margin-top: var(--s-5); flex-wrap: wrap; }
.producto-acciones .btn-primary { flex: 1; min-width: 200px; }

.producto-descripcion { margin-top: var(--s-6); padding-top: var(--s-5); border-top: 1px solid var(--color-border); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-img { order: -1; max-width: 360px; margin: 0 auto; }
}
@media (max-width: 900px) {
  .catalogo-layout { grid-template-columns: 1fr; }
  .catalogo-sidebar { position: static; }
  .producto-layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav { display: none; }
  .hero { padding: var(--s-6) 0; }
  .section { padding: var(--s-6) 0; }
  .site-footer .row { flex-direction: column; }
}