/* ============================================================
   VIDRIOTECH — Estilos de la tienda
   Paleta: azul tech (#0b5ed7 / #0e4d92) + gris vidrio + cian eléctrico
   Fuente: Montserrat
   ============================================================ */

:root {
  --azul-oscuro: #0e4d92;
  --azul: #0b5ed7;
  --azul-cyan: #06b6d4;
  --gris-vidrio: #f4f6f8;
  --gris-borde: #e2e8f0;
  --texto: #0f172a;
  --texto-suave: #64748b;
  --blanco: #ffffff;
  --exito: #16a34a;
  --peligro: #dc2626;
  --sombra: 0 4px 16px rgba(14, 77, 146, 0.08);
  --radio: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Montserrat', sans-serif;
  color: var(--texto);
  background: var(--blanco);
  line-height: 1.6;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { color: var(--azul); text-decoration: none; }
img { max-width: 100%; }

/* ===== HEADER ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gris-borde);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; gap: 20px;
}
.logo-img { height: 42px; width: auto; }
.main-nav { display: flex; align-items: center; gap: 24px; }
.main-nav a {
  color: var(--texto); font-weight: 500; font-size: 14px;
  transition: color 0.2s;
}
.main-nav a:hover { color: var(--azul); }
.main-nav .nav-cta {
  background: var(--azul); color: #fff;
  padding: 8px 18px; border-radius: 50px; font-weight: 600;
}
.main-nav .nav-cta:hover { background: var(--azul-oscuro); color: #fff; }
.cart-btn {
  position: relative; font-size: 22px; padding: 8px;
}
.cart-count {
  position: absolute; top: 0; right: -4px;
  background: var(--azul-cyan); color: #fff;
  font-size: 11px; font-weight: 700;
  min-width: 18px; height: 18px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  padding: 0 4px;
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(135deg, #0e4d92 0%, #0b5ed7 55%, #06b6d4 100%);
  color: #fff; padding: 72px 0; text-align: center;
}
.hero h1 {
  font-size: 2.6rem; font-weight: 800; max-width: 800px; margin: 0 auto 12px;
  letter-spacing: -0.5px;
}
.hero p {
  font-size: 1.15rem; opacity: 0.95; max-width: 620px; margin: 0 auto 28px;
}
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 13px 28px; border-radius: 50px;
  font-weight: 700; font-size: 15px; cursor: pointer; border: none;
  transition: transform 0.15s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--azul-cyan); color: #fff; box-shadow: 0 4px 14px rgba(6,182,212,0.4); }
.btn-white { background: #fff; color: var(--azul); }
.btn-outline { background: transparent; border: 2px solid var(--azul); color: var(--azul); }
.btn-outline:hover { background: var(--azul); color: #fff; }

/* ===== SECCIONES ===== */
.section { padding: 56px 0; }
.section-head { text-align: center; margin-bottom: 36px; }
.section-head h2 { font-size: 1.9rem; font-weight: 800; color: var(--azul-oscuro); }
.section-head p { color: var(--texto-suave); max-width: 600px; margin: 8px auto 0; }

/* ===== GRID DE CATEGORÍAS ===== */
.cat-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.cat-card {
  background: var(--blanco); border: 1px solid var(--gris-borde);
  border-radius: var(--radio); padding: 24px; text-align: center;
  transition: all 0.2s; cursor: pointer;
}
.cat-card:hover {
  border-color: var(--azul); box-shadow: var(--sombra); transform: translateY(-3px);
}
.cat-emoji { font-size: 2.4rem; display: block; margin-bottom: 10px; }
.cat-card h3 { font-size: 1.05rem; color: var(--azul-oscuro); margin-bottom: 4px; }
.cat-card p { font-size: 0.85rem; color: var(--texto-suave); }

/* ===== GRID DE PRODUCTOS ===== */
.prod-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.prod-card {
  background: var(--blanco); border: 1px solid var(--gris-borde);
  border-radius: var(--radio); overflow: hidden; transition: all 0.2s;
  display: flex; flex-direction: column;
}
.prod-card:hover { box-shadow: var(--sombra); transform: translateY(-3px); }
.prod-thumb {
  height: 180px; background: var(--gris-vidrio);
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem;
  overflow: hidden;
}
.prod-thumb img.prod-photo {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.prod-card .prod-emoji, .prod-thumb .prod-emoji { font-size: 3rem; }
.prod-page img.prod-photo {
  width: 100%; height: 100%; object-fit: cover; display: block;
  border-radius: 12px;
}
.cart-thumb { width: 48px; height: 48px; object-fit: cover; border-radius: 8px; display: block; }
.prod-body { padding: 18px; display: flex; flex-direction: column; flex: 1; }
.prod-body h3 { font-size: 1.02rem; color: var(--texto); margin-bottom: 8px; }
.prod-price { color: var(--azul); font-weight: 800; font-size: 1.15rem; margin-bottom: 12px; }
.prod-price small { font-weight: 500; color: var(--texto-suave); font-size: 0.8rem; }
.btn-block { width: 100%; }

/* ===== PASOS (cómo funciona) ===== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step { text-align: center; padding: 28px 20px; }
.step-num {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--azul); color: #fff; font-size: 1.4rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center; margin: 0 auto 14px;
}
.step h3 { margin-bottom: 8px; color: var(--azul-oscuro); }
.step p { color: var(--texto-suave); font-size: 0.92rem; }

/* ===== DIFERENCIA ===== */
.diferencia {
  background: var(--gris-vidrio); border-radius: var(--radio); padding: 36px;
}
.diferencia ul { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.diferencia li { display: flex; gap: 10px; align-items: flex-start; }
.diferencia li::before { content: "✔"; color: var(--azul-cyan); font-weight: 800; }

/* ===== PÁGINA PRODUCTO / CONFIGURADOR ===== */
.prod-page { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.prod-image {
  border-radius: var(--radio); background: var(--gris-vidrio);
  height: 420px; display: flex; align-items: center; justify-content: center;
  font-size: 6rem; overflow: hidden;
}
.prod-info h1 { font-size: 1.8rem; color: var(--azul-oscuro); margin-bottom: 8px; }
.prod-sub { color: var(--texto-suave); margin-bottom: 18px; }
.rating { color: #f59e0b; margin-bottom: 18px; font-size: 0.95rem; }

.config-panel {
  background: var(--gris-vidrio); border-radius: var(--radio); padding: 24px;
}
.config-group { margin-bottom: 20px; }
.config-group label { font-weight: 600; display: block; margin-bottom: 8px; font-size: 0.95rem; }
.unit-toggle {
  display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap;
}
.unit-toggle button {
  padding: 6px 12px; border-radius: 8px; border: 1px solid var(--gris-borde);
  background: #fff; font-weight: 600; font-size: 13px; cursor: pointer;
}
.unit-toggle button.active { background: var(--azul); color: #fff; border-color: var(--azul); }
.measure-row { display: flex; gap: 12px; }
.field { flex: 1; }
.field label { display: block; font-size: 0.85rem; color: var(--texto-suave); margin-bottom: 4px; }
.field input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--gris-borde);
  border-radius: 8px; font-size: 1rem; font-family: inherit;
}
.field input:focus { outline: 2px solid var(--azul); border-color: transparent; }
.opts { display: flex; flex-wrap: wrap; gap: 8px; }
.opt-chip {
  padding: 8px 14px; border-radius: 50px; border: 1px solid var(--gris-borde);
  background: #fff; cursor: pointer; font-size: 0.9rem; font-weight: 500;
}
.opt-chip.selected { background: var(--azul); color: #fff; border-color: var(--azul); }
.opt-chip:disabled { opacity: 0.4; cursor: not-allowed; }

.price-box {
  background: #fff; border-radius: 10px; padding: 16px; text-align: center;
  margin: 20px 0; border: 1px solid var(--gris-borde);
}
.price-box .label { font-size: 0.85rem; color: var(--texto-suave); }
.price-box .value { font-size: 1.9rem; font-weight: 800; color: var(--azul); }
.price-box .area { font-size: 0.88rem; color: var(--texto-suave); }
.nota { font-size: 0.8rem; color: var(--peligro); margin: 12px 0; }
.qty-row { display: flex; align-items: center; justify-content: center; gap: 14px; margin: 16px 0; }
.qty-btn {
  width: 36px; height: 36px; border-radius: 8px; border: 1px solid var(--gris-borde);
  background: #fff; font-size: 1.2rem; cursor: pointer; color: var(--azul);
}
#qty { font-weight: 700; width: 44px; text-align: center; font-size: 1.1rem; }
.entrega-note { font-size: 0.82rem; color: var(--texto-suave); text-align: center; margin-top: 12px; }

/* ===== CARRITO / CHECKOUT ===== */
.page-title { font-size: 1.8rem; color: var(--azul-oscuro); margin: 24px 0; }
.cart-list { max-width: 800px; }
.cart-item {
  display: flex; align-items: center; gap: 16px; padding: 16px;
  border: 1px solid var(--gris-borde); border-radius: var(--radio); margin-bottom: 12px;
}
.cart-item-info { flex: 1; }
.cart-item-info h4 { font-size: 1rem; }
.cart-item-info p { font-size: 0.82rem; color: var(--texto-suave); }
.cart-item-price { font-weight: 700; color: var(--azul); }
.cart-item .remove {
  background: none; border: none; color: var(--peligro); font-size: 1.4rem; cursor: pointer;
}
.cart-summary {
  max-width: 400px; background: var(--gris-vidrio); border-radius: var(--radio);
  padding: 24px; margin-top: 24px;
}
.cart-summary .row { display: flex; justify-content: space-between; margin-bottom: 10px; }
.cart-summary .total { font-size: 1.3rem; font-weight: 800; color: var(--azul-oscuro); border-top: 1px solid var(--gris-borde); padding-top: 12px; }
.empty {
  text-align: center; padding: 60px 20px; color: var(--texto-suave);
}
.empty .big { font-size: 3rem; display: block; margin-bottom: 12px; }

/* ===== FORM CHECKOUT ===== */
.checkout-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; }
.form-card {
  background: #fff; border: 1px solid var(--gris-borde); border-radius: var(--radio); padding: 24px;
}
.form-card h3 { margin-bottom: 16px; color: var(--azul-oscuro); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select {
  width: 100%; padding: 11px 12px; border: 1px solid var(--gris-borde);
  border-radius: 8px; font-size: 0.96rem; font-family: inherit;
}
.form-group input:focus, .form-group select:focus { outline: 2px solid var(--azul); }
.pago-opts { display: flex; flex-direction: column; gap: 10px; }
.pago-opt {
  border: 1px solid var(--gris-borde); border-radius: 10px; padding: 14px;
  cursor: pointer; display: flex; align-items: center; gap: 12px;
}
.pago-opt.selected { border-color: var(--azul); background: #f0f7ff; }
.pago-opt input { accent-color: var(--azul); }
.pago-opt .p { font-size: 0.85rem; color: var(--texto-suave); }

/* ===== PÁGINAS INFO ===== */
.info-page { max-width: 820px; margin: 0 auto; }
.info-page h1 { color: var(--azul-oscuro); font-size: 1.8rem; margin: 24px 0 16px; }
.info-page h2 { color: var(--azul); font-size: 1.25rem; margin: 24px 0 10px; }
.info-page p, .info-page li { color: var(--texto); margin-bottom: 10px; }
.info-page ul { padding-left: 20px; margin-bottom: 16px; }

/* ===== CONFIRMACIÓN ===== */
.confirm-box {
  text-align: center; background: var(--gris-vidrio); border-radius: var(--radio);
  padding: 48px 24px; max-width: 560px; margin: 40px auto;
}
.confirm-box .check { font-size: 4rem; color: var(--exito); display: block; margin-bottom: 12px; }
.confirm-box h1 { color: var(--azul-oscuro); margin-bottom: 10px; }
.confirm-box p { color: var(--texto-suave); margin-bottom: 20px; }
.num-pedido { font-size: 1.4rem; font-weight: 800; color: var(--azul); }

/* ===== TOAST ===== */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(100px);
  background: var(--azul-oscuro); color: #fff; padding: 14px 24px;
  border-radius: 50px; box-shadow: 0 6px 20px rgba(0,0,0,0.25);
  font-weight: 600; opacity: 0; transition: all 0.3s; z-index: 200; font-size: 0.95rem;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ===== FOOTER ===== */
.site-footer { background: var(--azul-oscuro); color: #fff; margin-top: 60px; }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr; gap: 30px;
  padding: 48px 20px;
}
.footer-logo { height: 40px; margin-bottom: 12px; }
.footer-tag { opacity: 0.8; font-size: 0.9rem; }
.site-footer h4 { font-size: 0.95rem; margin-bottom: 14px; }
.site-footer a { color: #fff; opacity: 0.85; display: block; margin-bottom: 8px; font-size: 0.9rem; }
.site-footer a:hover { opacity: 1; }
.footer-contact p { font-size: 0.9rem; opacity: 0.85; margin-bottom: 8px; }
.footer-contact a { display: inline; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.15); padding: 18px 0; }
.footer-bottom p { font-size: 0.82rem; opacity: 0.7; text-align: center; }

/* ===== BREADCRUMB / FILTROS ===== */
.breadcrumb { color: var(--texto-suave); font-size: 0.85rem; margin: 20px 0; }
.breadcrumb a { color: var(--azul); }
.filters { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }
.filter-chip {
  padding: 8px 16px; border-radius: 50px; border: 1px solid var(--gris-borde);
  background: #fff; cursor: pointer; font-size: 0.88rem; font-weight: 500; color: var(--texto);
}
.filter-chip.active { background: var(--azul); color: #fff; border-color: var(--azul); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-page { grid-template-columns: 1fr; }
  .prod-image { height: 300px; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .checkout-grid { grid-template-columns: 1fr; }
  .diferencia ul { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .main-nav { gap: 12px; }
  .main-nav a { font-size: 13px; }
  .main-nav .nav-cta { padding: 6px 12px; }
  .cat-grid, .prod-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.8rem; }
  .hero { padding: 48px 0; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}