/* ============================================================
   BBP - Beyond Bio Proteins | Paleta "Bio-Volt"
   Mobile-first. Sin frameworks. Variables CSS desde el config.
   ============================================================ */
:root {
  --obsidian: #0F172A;
  --obsidian-2: #1E293B;
  --volt: #ADFF2F;
  --teal: #0D9488;
  --chalk: #F4F6F8;
  --slate: #94A3B8;
  --radius: 14px;
  --maxw: 1200px;
  --font: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--obsidian);
  color: var(--chalk);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
section { padding: 72px 0; }
.eyebrow { color: var(--teal); font-weight: 700; letter-spacing: 2px; text-transform: uppercase; font-size: 12px; }
h2.section-title { font-size: clamp(26px, 4vw, 40px); font-weight: 800; margin: 8px 0 12px; }
.section-sub { color: var(--slate); max-width: 620px; margin-bottom: 36px; }

/* ---------- Botones ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; border: none; border-radius: 999px;
  padding: 12px 22px; font-weight: 700; cursor: pointer; font-size: 15px; transition: transform .15s, filter .15s; }
.btn:active { transform: scale(.97); }
.btn-volt { background: var(--volt); color: var(--obsidian); }
.btn-volt:hover { filter: brightness(1.05); }
.btn-teal { background: var(--teal); color: #fff; }
.btn-ghost { background: transparent; border: 1px solid var(--slate); color: var(--chalk); }

/* ---------- Header Glassmorphic ---------- */
.header { position: sticky; top: 0; z-index: 50;
  background: rgba(15, 23, 42, .72); backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%); border-bottom: 1px solid rgba(148,163,184,.15); }
.header-inner { display: flex; align-items: center; justify-content: flex-start; min-height: 88px; }
.header-inner > a { flex-shrink: 0; }
.header nav { display: none; gap: 18px; margin-left: 24px; }
.header nav a { font-size: 14px; color: var(--slate); transition: color .15s; }
.header nav a:hover { color: var(--volt); }
.installments { font-size: 11px; color: var(--obsidian); background: var(--volt); padding: 3px 8px; border-radius: 999px; font-weight: 700; white-space: nowrap; }
.header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.cart-btn { position: relative; background: none; border: none; color: var(--chalk); cursor: pointer; font-size: 22px; }
.cart-count { position: absolute; top: -8px; right: -10px; background: var(--volt); color: var(--obsidian);
  font-size: 11px; font-weight: 800; min-width: 18px; height: 18px; border-radius: 999px; display: grid; place-items: center; }
.hamburger { background: none; border: none; color: var(--chalk); font-size: 26px; cursor: pointer; display: flex; padding: 4px; }
.mobile-nav { position: fixed; top: 88px; left: 0; width: 100%; background: rgba(15,23,42,.96); backdrop-filter: blur(12px);
  z-index: 55; transform: translateY(-110%); transition: transform .28s ease; border-bottom: 1px solid rgba(148,163,184,.15); padding: 16px 20px; display: flex; flex-direction: column; gap: 10px; }
.mobile-nav.open { transform: translateY(0); }
.mobile-nav a { color: var(--chalk); font-size: 16px; font-weight: 500; padding: 10px 0; border-bottom: 1px solid rgba(148,163,184,.1); }
.mobile-nav a:last-child { border-bottom: none; }

/* ---------- Mobile fixes ---------- */
@media (max-width: 719px) {
  .header { background: var(--obsidian); backdrop-filter: none; -webkit-backdrop-filter: none;
    box-shadow: 0 2px 12px rgba(0,0,0,.4); border-bottom: 1px solid rgba(148,163,184,.25); }
  .header nav { display: none !important; }
  .header-inner { flex-wrap: nowrap; gap: 4px; }
  .header-inner > a img { height: 56px !important; }
  .installments { font-size: 9px; padding: 2px 6px; }
  .hamburger { font-size: 26px; padding: 8px; }
  .cart-btn { font-size: 24px; }
}

/* ---------- Hero ---------- */
.hero { padding-top: 56px; overflow: hidden;
  background: radial-gradient(900px 400px at 80% -10%, rgba(13,148,136,.25), transparent),
  radial-gradient(700px 400px at 0% 10%, rgba(173,255,47,.08), transparent); }
.hero-split { display: flex; align-items: center; gap: 40px; }
.hero-text { flex: 1; min-width: 0; }
.hero-image { flex: 1; min-width: 0; display: none; }
.hero-image img { width: 100%; height: auto; border-radius: 20px; object-fit: cover; max-height: 500px; }
.hero h1 { font-size: clamp(34px, 6vw, 64px); font-weight: 900; line-height: 1.05; letter-spacing: -1px; }
.hero h1 .accent { color: var(--volt); }
.hero p { color: var(--slate); font-size: 18px; max-width: 520px; margin: 18px 0 28px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- LIT Engine ---------- */
.lit { background: var(--obsidian-2); }
.lit-grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
.lit-card { background: var(--obsidian); border: 1px solid rgba(148,163,184,.15); border-radius: var(--radius); padding: 26px; }
.lit-card .ico { width: 44px; height: 44px; border-radius: 12px; background: rgba(173,255,47,.12);
  display: grid; place-items: center; color: var(--volt); font-size: 22px; margin-bottom: 14px; }
.lit-card h3 { font-size: 18px; margin-bottom: 6px; }
.lit-card p { color: var(--slate); font-size: 15px; }

/* ---------- Catalogo ---------- */
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 28px; }
.chip { background: transparent; border: 1px solid rgba(148,163,184,.3); color: var(--slate);
  padding: 8px 16px; border-radius: 999px; cursor: pointer; font-size: 14px; transition: all .15s; }
.chip.active { background: var(--volt); color: var(--obsidian); border-color: var(--volt); font-weight: 700; }
.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.card { background: var(--obsidian-2); border: 1px solid rgba(148,163,184,.12); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: transform .18s, border-color .18s; }
.card:hover { transform: translateY(-4px); border-color: rgba(173,255,47,.4); }
.card .thumb { aspect-ratio: 1/1; background: var(--chalk); overflow: hidden; }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.card .body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card .code { color: var(--teal); font-size: 12px; font-weight: 700; letter-spacing: 1px; }
.card h3 { font-size: 17px; }
.card .desc { color: var(--slate); font-size: 13px; flex: 1; }
.card .price { font-size: 22px; font-weight: 800; }
.card .flavors { display: flex; flex-wrap: wrap; gap: 6px; }
.card select { background: var(--obsidian); color: var(--chalk); border: 1px solid rgba(148,163,184,.3);
  border-radius: 8px; padding: 8px; font-size: 13px; width: 100%; }

/* ---------- Kits ---------- */
.kits { background: var(--obsidian-2); }
.kit-grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
.kit-card { display: grid; grid-template-columns: 1fr; background: var(--obsidian);
  border: 1px solid rgba(13,148,136,.4); border-radius: var(--radius); overflow: hidden; }
.kit-card .thumb { aspect-ratio: 16/9; overflow: hidden; }
.kit-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.kit-card .body { padding: 22px; }
.kit-card .badge { display: inline-block; background: rgba(13,148,136,.2); color: var(--teal);
  font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; margin-bottom: 10px; }
.kit-card .price-row { display: flex; align-items: baseline; gap: 10px; margin: 12px 0; }
.kit-card .compare { color: var(--slate); text-decoration: line-through; font-size: 15px; }

/* ---------- Laudados ---------- */
.laudados-box { background: var(--obsidian-2); border: 1px solid rgba(13,148,136,.4);
  border-radius: var(--radius); padding: 28px; }
.laudados-search { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0 20px; }
.laudados-search input { flex: 1; min-width: 200px; background: var(--obsidian); border: 1px solid rgba(148,163,184,.3);
  color: var(--chalk); border-radius: 10px; padding: 12px 14px; font-size: 15px; }
.laudado-result { border-top: 1px solid rgba(148,163,184,.15); padding: 14px 0; }
.laudado-result .ok { color: var(--volt); font-weight: 700; }
.laudado-result .grid-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; font-size: 14px; color: var(--slate); margin-top: 6px; }

/* ---------- Form contacto ---------- */
.contact { background: var(--obsidian-2); }
.contact form { display: grid; gap: 14px; max-width: 560px; }
.contact input, .contact textarea { background: var(--obsidian); border: 1px solid rgba(148,163,184,.3);
  color: var(--chalk); border-radius: 10px; padding: 12px 14px; font-size: 15px; font-family: var(--font); }
.contact textarea { min-height: 120px; resize: vertical; }

/* ---------- Carrito lateral (drawer) ---------- */
.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.5); opacity: 0; pointer-events: none;
  transition: opacity .25s; z-index: 60; }
.overlay.open { opacity: 1; pointer-events: auto; }
.drawer { position: fixed; top: 0; right: 0; height: 100%; width: min(420px, 100%);
  background: var(--obsidian); border-left: 1px solid rgba(148,163,184,.2); z-index: 70;
  transform: translateX(100%); transition: transform .28s ease; display: flex; flex-direction: column; }
.drawer.open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border-bottom: 1px solid rgba(148,163,184,.15); }
.drawer-head h3 { font-size: 18px; }
.drawer-close { background: none; border: none; color: var(--chalk); font-size: 24px; cursor: pointer; }
.drawer-body { flex: 1; overflow-y: auto; padding: 18px 20px; }
.cart-item { display: grid; grid-template-columns: 56px 1fr auto; gap: 12px; align-items: center;
  padding: 12px 0; border-bottom: 1px solid rgba(148,163,184,.12); }
.cart-item img { width: 56px; height: 56px; object-fit: cover; border-radius: 8px; }
.cart-item .meta { font-size: 13px; }
.cart-item .meta .flv { color: var(--slate); font-size: 12px; }
.qty { display: flex; align-items: center; gap: 8px; margin-top: 4px; }
.qty button { width: 24px; height: 24px; border-radius: 6px; border: 1px solid rgba(148,163,184,.3);
  background: var(--obsidian-2); color: var(--chalk); cursor: pointer; }
.cart-item .remove { background: none; border: none; color: var(--slate); cursor: pointer; font-size: 18px; }

/* Barra de regalos progresiva */
.giftbar { padding: 14px 20px; border-top: 1px solid rgba(148,163,184,.15); }
.giftbar .track { height: 8px; background: var(--obsidian-2); border-radius: 999px; overflow: hidden; margin: 10px 0; }
.giftbar .fill { height: 100%; background: linear-gradient(90deg, var(--teal), var(--volt)); width: 0%; transition: width .35s; }
.giftbar .milestones { display: flex; justify-content: space-between; font-size: 11px; color: var(--slate); }
.giftbar .milestones .unlocked { color: var(--volt); font-weight: 700; }

.drawer-foot { padding: 18px 20px; border-top: 1px solid rgba(148,163,184,.2); }
.drawer-foot .row { display: flex; justify-content: space-between; margin-bottom: 6px; font-size: 14px; color: var(--slate); }
.drawer-foot .total { color: var(--chalk); font-size: 20px; font-weight: 800; }
.drawer-foot .btn { width: 100%; justify-content: center; margin-top: 12px; }
.cart-empty { color: var(--slate); text-align: center; padding: 40px 0; }

/* ---------- Longevidad ---------- */
.longevidad { background: var(--obsidian); border-top: 1px solid rgba(13,148,136,.2); }
.longevidad-split { display: flex; flex-direction: column; gap: 24px; }
.longevidad-image img { width: 100%; height: auto; border-radius: 20px; object-fit: cover; max-height: 450px; }
.longevidad-text .tag { display: inline-block; background: rgba(13,148,136,.2); color: var(--teal); font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; margin-bottom: 12px; letter-spacing: 1px; }

/* ---------- Footer ---------- */
.footer { background: var(--obsidian); border-top: 1px solid rgba(148,163,184,.15); padding: 40px 0; color: var(--slate); font-size: 14px; }
.footer .cols { display: grid; gap: 24px; grid-template-columns: 1fr; }

/* ---------- Toast ---------- */
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--volt); color: var(--obsidian); padding: 12px 20px; border-radius: 999px; font-weight: 700;
  opacity: 0; pointer-events: none; transition: all .25s; z-index: 90; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============================================================
   RESPONSIVE — breakpoints que Hermes debe validar
   ============================================================ */
@media (min-width: 720px) {
  .header nav { display: flex; }
  .hamburger { display: none; }
  .mobile-nav { display: none; }
  .hero-image { display: block; }
  .lit-grid { grid-template-columns: repeat(3, 1fr); }
  .kit-grid { grid-template-columns: repeat(2, 1fr); }
  .kit-card { grid-template-columns: 1fr 1fr; }
  .kit-card .thumb { aspect-ratio: auto; }
  .footer .cols { grid-template-columns: 2fr 1fr 1fr; }
  .longevidad-split { display: flex; align-items: center; gap: 40px; }
  .longevidad-split .longevidad-text { flex: 1; }
  .longevidad-split .longevidad-image { flex: 1; }
}
@media (min-width: 1024px) {
  .hero { padding-top: 90px; padding-bottom: 90px; }
}