/* Layout: monochrome trade-desk page. Header → thesis → five divisions → filterable product-group index → contact strip → footer. */
/* Tokens (colores, tipografía, pesos): tokens.css, cargado antes que este archivo. */

*, *::before, *::after { box-sizing: border-box; }
:root { padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); }
body { margin: 0; }
img, svg { max-width: 100%; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  background: var(--paper); color: var(--ink);
  font: 400 1rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
.wrap {
  max-width: var(--wrap); margin-inline: auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.05; text-wrap: balance; margin: 0; letter-spacing: var(--display-tracking); }
p { margin: 0; }
.label { font: 500 .75rem/1.2 var(--mono); text-transform: uppercase; letter-spacing: var(--label-tracking); color: var(--muted); }

.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 12px; z-index: 20; }
.skip:focus { left: max(16px, env(safe-area-inset-left, 0px)); }

/* Header */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--paper); }
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 9; background: var(--paper); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; }
.wordmark { display: flex; align-items: center; text-decoration: none; color: var(--ink); }
.wordmark .logo { height: 40px; width: auto; display: block; }
@media (max-width: 560px) { .wordmark .logo { height: 32px; } }
.wordmark b { font: 600 1.5rem/1 var(--display); letter-spacing: .08em; }
.wordmark span { font: 500 .7rem/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
.nav { display: flex; gap: 20px; flex-wrap: wrap; }
.nav a { text-decoration: none; font-size: .9rem; color: var(--muted); }
.nav a:hover { color: var(--ink); }
@media (max-width: 560px) { .nav { gap: 14px; } .nav a { font-size: .85rem; } .wordmark span { display: none; } }

/* Hero */
.hero .wrap { padding-block: clamp(48px, 9vw, 104px) clamp(40px, 6vw, 72px); display: grid; gap: 28px; }
.hero h1 { font-size: clamp(2.25rem, 5.6vw, 4rem); max-width: 21ch; }
.hero p.lead { font-size: clamp(1.05rem, 1.6vw, 1.2rem); color: var(--muted); max-width: 60ch; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 18px; font: 600 .95rem/1 var(--body); text-decoration: none; border: 1px solid var(--ink); cursor: pointer; background: transparent; color: var(--ink); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn:hover { border-color: var(--accent); }
.btn.primary:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.facts { display: flex; flex-wrap: wrap; gap: 8px 28px; padding-top: 12px; border-top: 1px solid var(--line); }
.facts div { display: grid; gap: 2px; }
.facts strong { font: 600 1.6rem/1 var(--display); font-variant-numeric: tabular-nums; }

/* Sectors */
section { scroll-margin-top: 72px; }
.band { border-top: 1px solid var(--line); }
.band .wrap { padding-block: clamp(48px, 7vw, 88px); display: grid; gap: 32px; }
.section-head { display: grid; gap: 10px; max-width: 65ch; }
.section-head h2 { font-size: clamp(1.75rem, 3.2vw, 2.5rem); }
.section-head p { color: var(--muted); }
.sectors { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border: 1px solid var(--line); }
.sector { padding: 24px 20px; display: grid; gap: 12px; align-content: start; border-left: 1px solid var(--line); background: var(--paper); text-align: left; font: inherit; color: inherit; cursor: pointer; border-top: 0; border-right: 0; border-bottom: 0; }
.sector:first-child { border-left: 0; }
.sector:hover { background: var(--tint); }
.sector h3 { font-size: 1.25rem; }
.sector p { color: var(--muted); font-size: .95rem; }
.sector .count { font: 500 .8rem/1 var(--mono); color: var(--accent); }
@media (max-width: 860px) { .sectors { grid-template-columns: repeat(2, minmax(0, 1fr)); } .sector:nth-child(odd) { border-left: 0; } .sector:nth-child(n+3) { border-top: 1px solid var(--line); } }
@media (max-width: 480px) { .sectors { grid-template-columns: minmax(0, 1fr); } .sector { border-left: 0; } .sector:nth-child(n+2) { border-top: 1px solid var(--line); } }

/* Product index */
.toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font: 500 .85rem/1 var(--body); padding: 9px 14px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); cursor: pointer; }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.chip:hover { border-color: var(--ink); }
.status { font: 400 .85rem/1 var(--mono); color: var(--muted); font-variant-numeric: tabular-nums; }
.index { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.item { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 20px; display: grid; gap: 10px; grid-template-rows: auto auto 1fr; min-width: 0; }
.item .tags { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; align-content: start; }
.item .division { font: 500 .72rem/1 var(--mono); letter-spacing: var(--label-tracking); text-transform: uppercase; color: var(--accent); }
.tag { font: 500 .68rem/1 var(--mono); letter-spacing: var(--label-tracking); text-transform: uppercase; color: var(--muted); border: 1px solid var(--line); padding: 4px 6px; }
.item h3 { font-size: 1.2rem; }
.item p { color: var(--muted); font-size: .93rem; }
.item .cat { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding-top: 10px; border-top: 1px dashed var(--line); font-size: .85rem; }
.item .cat span { color: var(--muted); font-family: var(--mono); font-size: .75rem; }
.item .cat a { font-weight: 600; text-decoration: none; }
.item .cat a:hover { color: var(--accent); }
@media (max-width: 900px) { .index { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .index { grid-template-columns: minmax(0, 1fr); } }

/* Contact */
.contact { background: var(--ink); color: var(--paper); }
.contact .wrap { padding-block: clamp(48px, 7vw, 88px); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; }
.contact h2 { font-size: clamp(1.75rem, 3.2vw, 2.5rem); }
.contact .section-head p { color: var(--inverse-text-soft); }
.contact .label { color: var(--inverse-text-muted); }
.lines { display: grid; gap: 0; border-top: 1px solid var(--inverse-line); }
.line { display: grid; grid-template-columns: 110px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding-block: 18px; border-bottom: 1px solid var(--inverse-line); }
.line a, .line .val { font: 500 1.15rem/1.3 var(--body); text-decoration: none; overflow-wrap: anywhere; }
.line a:hover { text-decoration: underline; }
.copy { font: 500 .75rem/1 var(--mono); padding: 8px 10px; background: transparent; color: var(--paper); border: 1px solid var(--inverse-border); cursor: pointer; }
.copy:hover { border-color: var(--paper); }
@media (max-width: 760px) { .contact .wrap { grid-template-columns: minmax(0, 1fr); } .line { grid-template-columns: minmax(0, 1fr) auto; } .line .label { grid-column: 1 / -1; } }

/* Footer */
.site-footer .wrap { padding-block: 28px; display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; font-size: .85rem; color: var(--muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 16px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--ink); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Language switch */
.header-right { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; justify-content: flex-end; }
.lang { display: flex; border: 1px solid var(--line); }
.lang a, .lang span { font: 500 .75rem/1 var(--mono); letter-spacing: var(--label-tracking); padding: 7px 9px; text-decoration: none; color: var(--muted); }
.lang [aria-current="true"] { background: var(--ink); color: var(--paper); }
.lang a:hover { color: var(--ink); }
@media (max-width: 560px) { .header-right { gap: 12px; } }

/* Entrega 5 (OBS_DESIGN, 26/10) y cambio a OBRASAN (27/10): menú en móvil y bloque «How it works» */
@media (max-width: 560px) { .nav { display: none; } }
.hero .wrap { grid-template-columns: minmax(0, 1fr) minmax(0, 340px); column-gap: clamp(32px, 6vw, 80px); }
.hero .wrap > * { grid-column: 1; }
.hero .wrap > .steps { grid-column: 2; grid-row: 1 / span 4; align-self: center; }
.steps { display: grid; gap: 16px; border-left: 1px solid var(--line); padding-left: clamp(20px, 3vw, 32px); }
.steps ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 22px; }
.steps li { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 14px; align-items: start; }
.steps .n { width: 32px; height: 32px; display: grid; place-items: center; border: 1px solid var(--accent); color: var(--accent); font: 600 .9rem/1 var(--body); font-variant-numeric: tabular-nums; }
.steps h3 { font-size: 1.1rem; line-height: 1.25; }
.steps p { color: var(--muted); font-size: .93rem; margin-top: 4px; }
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); }
  .hero .wrap > .steps { grid-column: 1; grid-row: auto; border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 24px; }
}