/* =========================================================
    Papelera Cesar — estilos
    Paleta: kraft (cartón), tinta (marcador), azul de sello
   ========================================================= */

:root {
  --paper: #F3F4F1;
  --surface: #FFFFFF;
  --ink: #17212B;
  --muted: #56616C;
  --line: #D9DDD7;
  --kraft: #B7885A;
  --kraft-deep: #8E6440;
  --kraft-soft: #EADCC9;
  --blue: #2446C9;
  --on-ink: #F3F4F1;

  --font-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Consolas", monospace;

  --radius: 6px;
  --gutter: clamp(16px, 4vw, 40px);
  --maxw: 1180px;
  --header-h: 68px;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --paper: #121820;
  --surface: #1A222C;
  --ink: #E9EDF0;
  --muted: #9AA5B0;
  --line: #2B3540;
  --kraft: #C99B6C;
  --kraft-deep: #E0B98F;
  --kraft-soft: #33291F;
  --blue: #8098FF;
  --on-ink: #121820;
  color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.1; margin: 0; text-wrap: balance; }
p { margin: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 2px; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.container--narrow { max-width: 820px; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.eyebrow {
  font: 500 12px/1 var(--font-mono);
  letter-spacing: .12em; text-transform: uppercase; color: var(--kraft-deep);
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 22px; border-radius: var(--radius); border: 2px solid transparent;
  font: 600 15px/1 var(--font-body); text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background-color .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn--small { padding: 10px 16px; font-size: 14px; }
.btn--ink { background: var(--ink); color: var(--on-ink); }
.btn--outline { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn--outline:hover { background: var(--ink); color: var(--on-ink); }
.btn--kraft { background: var(--kraft); color: #1B140D; }
.btn--ghost { background: transparent; color: var(--muted); border-color: var(--line); }

/* ---------- Header ---------- */
.header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand__mark {
  display: grid; place-items: center; width: 38px; height: 38px;
  background: var(--kraft); color: #1B140D; border-radius: 4px;
  font: 800 15px/1 var(--font-display); letter-spacing: -.02em;
}
.brand__name { font: 700 19px/1 var(--font-display); letter-spacing: -.01em; }

.header__right { display: flex; align-items: center; gap: 16px; }

/* Switch de tema (claro/oscuro) */
.theme-switch {
  flex-shrink: 0; position: relative; width: 56px; height: 30px;
  border: 0; border-radius: 999px; padding: 0; cursor: pointer;
  background: linear-gradient(135deg, var(--kraft-soft), var(--kraft));
  transition: background .3s ease;
}
.theme-switch[data-effective="dark"] { background: linear-gradient(135deg, var(--ink), var(--blue)); }
.theme-switch__thumb {
  position: absolute; top: 3px; left: 3px; width: 24px; height: 24px;
  border-radius: 50%; background: var(--surface); color: var(--ink);
  display: grid; place-items: center; box-shadow: 0 2px 6px rgba(0,0,0,.25);
  transition: transform .3s ease;
}
.theme-switch__thumb svg { width: 15px; height: 15px; }
.theme-switch[data-effective="dark"] .theme-switch__thumb { transform: translateX(26px); }

.nav { display: flex; align-items: center; gap: 28px; }
.nav a:not(.btn) { text-decoration: none; font-weight: 500; font-size: 15px; color: var(--muted); }
.nav a:not(.btn):hover { color: var(--ink); }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: 0; background: transparent; cursor: pointer; position: relative;
}
.nav-toggle__bar, .nav-toggle__bar::before, .nav-toggle__bar::after {
  position: absolute; left: 11px; width: 22px; height: 2px; background: var(--ink); content: "";
  transition: transform .2s ease, top .2s ease, opacity .2s ease;
}
.nav-toggle__bar { top: 21px; }
.nav-toggle__bar::before { left: 0; top: -7px; }
.nav-toggle__bar::after { left: 0; top: 7px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after { top: 0; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(48px, 8vw, 96px) clamp(40px, 6vw, 72px); }
.hero__grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.hero__copy { display: flex; flex-direction: column; gap: 22px; }
.hero__title {
  font-size: clamp(40px, 6.4vw, 76px); font-weight: 800; letter-spacing: -.035em; line-height: .98;
}
.hl {
  color: var(--blue);
  background: linear-gradient(transparent 62%, color-mix(in srgb, var(--kraft) 45%, transparent) 62%);
  padding-inline: .05em;
}
.hero__lead { font-size: 18px; color: var(--muted); max-width: 52ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }

/* Etiqueta de envío */
.label {
  position: relative; background: var(--surface); color: var(--ink);
  border: 2px solid var(--ink); border-radius: 4px;
  padding: 28px 24px 22px; display: flex; flex-direction: column; gap: 0;
  transform: rotate(2deg); box-shadow: 10px 10px 0 var(--kraft);
  max-width: 420px; justify-self: end; width: 100%;
  animation: drop .7s cubic-bezier(.2,.8,.3,1.2) both;
}
.label__tape {
  position: absolute; top: -16px; left: 50%; width: 120px; height: 30px; transform: translateX(-50%) rotate(-3deg);
  background: color-mix(in srgb, var(--kraft) 70%, transparent);
  border-left: 2px dashed color-mix(in srgb, var(--kraft-deep) 50%, transparent);
  border-right: 2px dashed color-mix(in srgb, var(--kraft-deep) 50%, transparent);
}
.label__row {
  display: grid; grid-template-columns: 110px 1fr; gap: 12px; align-items: baseline;
  padding-block: 12px; border-bottom: 1px dashed var(--line);
}
.label__row--head { grid-template-columns: 1fr auto; font-size: 13px; border-bottom: 2px solid var(--ink); padding-top: 0; }
.label__code { font-size: 15px; }
.label__key { font-size: 11px; letter-spacing: .1em; color: var(--muted); }
.label__val { font: 700 20px/1.2 var(--font-display); }
.label__val.mono { font: 500 16px/1.2 var(--font-mono); }
.label__barcode {
  height: 54px; margin-top: 18px; margin-right: 110px;
  background: repeating-linear-gradient(90deg,
    var(--ink) 0 2px, transparent 2px 5px, var(--ink) 5px 6px, transparent 6px 9px,
    var(--ink) 9px 13px, transparent 13px 15px, var(--ink) 15px 16px, transparent 16px 20px);
}
.label__stamp {
  position: absolute; right: 16px; bottom: 14px;
  border: 3px solid var(--blue); color: var(--blue); border-radius: 50%;
  width: 92px; height: 92px; display: grid; place-items: center; text-align: center;
  font-size: 12px; line-height: 1.3; letter-spacing: .08em; text-transform: uppercase;
  transform: rotate(-14deg); opacity: .85;
}
@keyframes drop {
  from { transform: translateY(-24px) rotate(-4deg); opacity: 0; }
  to   { transform: translateY(0) rotate(2deg); opacity: 1; }
}

/* ---------- Beneficios ---------- */
.perks { border-block: 1px solid var(--line); background: var(--surface); }
.perks__grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.perk { padding: 28px 24px; display: flex; flex-direction: column; gap: 6px; }
.perk + .perk { border-left: 1px solid var(--line); }
.perk h3 { font-size: 19px; }
.perk p { color: var(--muted); font-size: 15px; }

/* ---------- Secciones ---------- */
.section { padding-block: clamp(64px, 9vw, 112px); }
.section--kraft { background: var(--kraft-soft); }
.section__head { display: flex; flex-direction: column; gap: 12px; margin-bottom: 36px; }
.section__head h2 { font-size: clamp(32px, 4.4vw, 52px); font-weight: 800; letter-spacing: -.03em; }
.section__lead { color: var(--muted); max-width: 60ch; }

/* ---------- Catálogo ---------- */
.toolbar { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; margin-bottom: 28px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1.5px solid var(--line); background: var(--surface); color: var(--ink);
  padding: 9px 14px; border-radius: 999px; font: 500 14px/1 var(--font-body); cursor: pointer;
  transition: border-color .15s, background-color .15s, color .15s;
}
.chip:hover { border-color: var(--ink); }
.chip[aria-selected="true"] { background: var(--ink); color: var(--on-ink); border-color: var(--ink); }
.search input {
  width: min(320px, 100%); padding: 11px 14px; border-radius: var(--radius);
  border: 1.5px solid var(--line); background: var(--surface); color: var(--ink);
  font: 400 15px/1 var(--font-body);
}
.search { flex: 0 1 320px; }
.search input:focus { outline: none; border-color: var(--blue); }

.products { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }
.product {
  display: flex; flex-direction: column; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}
.product:hover { transform: translateY(-3px); box-shadow: 0 10px 24px -14px rgba(0,0,0,.35); }
.product__media {
  position: relative; aspect-ratio: 4 / 3; max-width: 100%;
  display: grid; place-items: center; background: var(--kraft-soft); color: var(--kraft-deep);
}
.product__media svg { width: 72px; height: 72px; }
.product__media img { width: 100%; height: 100%; object-fit: cover; }
.product__cat {
  position: absolute; top: 12px; left: 12px; background: var(--surface); color: var(--ink);
  padding: 5px 9px; border-radius: 3px; font: 500 11px/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase;
}
.product__body { display: flex; flex-direction: column; gap: 8px; padding: 18px; flex: 1; }
.product__name { font-size: 19px; font-weight: 700; }
.product__spec { font: 500 13px/1.4 var(--font-mono); color: var(--muted); }
.product__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 12px; }
.product__price { font: 600 15px/1 var(--font-body); white-space: nowrap; }
.product__price--ask { color: var(--muted); font-weight: 500; }
.add {
  border: 1.5px solid var(--ink); background: transparent; color: var(--ink);
  padding: 9px 12px; border-radius: var(--radius); font: 600 14px/1 var(--font-body); cursor: pointer;
  transition: background-color .15s, color .15s;
}
.add:hover, .add.is-added { background: var(--ink); color: var(--on-ink); }
.empty { color: var(--muted); padding-block: 24px; }

/* ---------- Promos ---------- */
.promos { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.promo {
  position: relative; background: var(--surface); border: 2px solid var(--ink); border-radius: 4px;
  padding: 26px 24px; display: flex; flex-direction: column; gap: 12px;
}
.promo__tag {
  align-self: flex-start; background: var(--blue); color: #fff;
  font: 500 12px/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; padding: 6px 10px; border-radius: 3px;
}
.promo__value { font: 800 clamp(44px, 5vw, 60px)/1 var(--font-display); letter-spacing: -.04em; }
.promo h3 { font-size: 21px; }
.promo p { color: var(--muted); }
.promo .btn { align-self: flex-start; margin-top: 6px; }
.btn.is-disabled { opacity: .45; }

/* ---------- Pasos ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step { display: flex; flex-direction: column; gap: 10px; padding-top: 22px; border-top: 2px solid var(--ink); }
.step__num {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%;
  background: var(--kraft); color: #1B140D; font-size: 16px;
}
.step h3 { font-size: 21px; }
.step p { color: var(--muted); }

/* ---------- Mayorista ---------- */
.wholesale { background: var(--ink); color: var(--on-ink); padding-block: 56px; }
.wholesale__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.wholesale h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; letter-spacing: -.03em; }
.wholesale p { opacity: .8; margin-top: 8px; max-width: 55ch; }

/* ---------- FAQ ---------- */
.faq { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary {
  list-style: none; cursor: pointer; padding: 20px 40px 20px 0; position: relative;
  font: 600 18px/1.35 var(--font-body);
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font: 500 26px/1 var(--font-mono); color: var(--kraft-deep); transition: transform .2s ease;
}
.faq__item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq__item p { padding-bottom: 20px; color: var(--muted); max-width: 65ch; }

/* ---------- Footer ---------- */
.footer { background: var(--surface); border-top: 1px solid var(--line); padding-block: 56px 28px; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
.footer__text { color: var(--muted); margin-top: 14px; max-width: 40ch; }
.footer__title { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; font-weight: 500; }
.footer__phone { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.footer__link { color: var(--blue); text-decoration: none; font-weight: 500; }
.footer__link:hover { text-decoration: underline; }
.copy {
  border: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer;
  padding: 5px 9px; border-radius: 4px; font: 500 12px/1 var(--font-body);
}
.footer__bottom {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted);
}

/* ---------- Consulta (carrito) ---------- */
.cart-fab {
  position: fixed; right: var(--gutter); bottom: calc(20px + env(safe-area-inset-bottom, 0px)); z-index: 60;
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--ink); color: var(--on-ink); border: 0; border-radius: 999px;
  padding: 14px 18px; font: 600 15px/1 var(--font-body); cursor: pointer;
  box-shadow: 0 10px 30px -10px rgba(0,0,0,.5);
  transition: transform .2s ease;
}
.cart-fab:hover { transform: translateY(-2px); }
.cart-fab__count {
  display: grid; place-items: center; min-width: 24px; height: 24px; padding-inline: 6px;
  border-radius: 999px; background: var(--kraft); color: #1B140D; font-size: 13px;
}
.cart-fab.bump { animation: bump .35s ease; }
@keyframes bump { 50% { transform: scale(1.08); } }

.cart { position: fixed; inset: 0; z-index: 80; }
.cart__backdrop { position: absolute; inset: 0; background: rgba(10, 14, 18, .5); }
.cart__panel {
  position: absolute; right: 0; top: 0; bottom: 0; width: min(420px, 100%);
  background: var(--paper); display: flex; flex-direction: column;
  padding-block: env(safe-area-inset-top, 0px) env(safe-area-inset-bottom, 0px);
  animation: slide .25s ease both;
}
@keyframes slide { from { transform: translateX(100%); } to { transform: translateX(0); } }
.cart__head { display: flex; justify-content: space-between; align-items: center; padding: 20px 22px; border-bottom: 1px solid var(--line); }
.cart__head h3 { font-size: 22px; }
.cart__close { border: 0; background: transparent; color: var(--ink); font-size: 30px; line-height: 1; cursor: pointer; width: 40px; height: 40px; }
.cart__list { list-style: none; margin: 0; padding: 8px 22px; flex: 1; overflow-y: auto; }
.cart__item { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; padding-block: 14px; border-bottom: 1px dashed var(--line); }
.cart__item-name { font-weight: 600; }
.cart__item-spec { font: 500 12px/1.4 var(--font-mono); color: var(--muted); }
.qty { display: inline-flex; align-items: center; border: 1.5px solid var(--line); border-radius: var(--radius); }
.qty button { width: 32px; height: 32px; border: 0; background: transparent; color: var(--ink); font-size: 18px; cursor: pointer; }
.qty span { min-width: 28px; text-align: center; font: 500 14px/1 var(--font-mono); }
.cart__empty { padding: 24px 22px; color: var(--muted); }
.cart__foot { display: flex; gap: 10px; padding: 18px 22px; border-top: 1px solid var(--line); }
.cart__foot .btn { flex: 1; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: calc(88px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%);
  z-index: 90; background: var(--ink); color: var(--on-ink);
  padding: 12px 18px; border-radius: var(--radius); font-weight: 500; font-size: 14px;
  box-shadow: 0 10px 30px -10px rgba(0,0,0,.5);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .label { justify-self: start; transform: rotate(1deg); }
  .steps { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__grid > :first-child { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .header__right { gap: 10px; }
  .nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter) 20px;
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a:not(.btn) { padding-block: 14px; border-bottom: 1px solid var(--line); font-size: 17px; color: var(--ink); }
  .nav .btn { margin-top: 16px; }
  .perks__grid { grid-template-columns: 1fr; }
  .perk + .perk { border-left: 0; border-top: 1px solid var(--line); }
  .search, .search input { flex-basis: 100%; width: 100%; }
  .products { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .product__body { padding: 14px; }
  .product__name { font-size: 16px; }
  .product__media svg { width: 52px; height: 52px; }
  .add { width: 100%; }
}

@media (max-width: 480px) {
  .footer__grid { grid-template-columns: 1fr; }
  .label__row { grid-template-columns: 90px 1fr; }
  .label__stamp { width: 76px; height: 76px; font-size: 10px; right: 12px; }
  .label__barcode { margin-right: 92px; }
  .hero__actions .btn { flex: 1 1 100%; }
}

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