/* LeivaMetal — editorial brutalista sobre gris cálido, acento cobre */
:root {
  --canvas: #dedede;      /* igual al fondo de la foto de portada */
  --mist: #ececec;
  --paper: #ffffff;
  --ink: #000000;
  --graphite: #161616;
  --slate: #444444;
  --smoke: #8a8a8a;
  --copper: #9a5a2a;       /* texto/botón: contraste AA con blanco */
  --copper-bright: #c98249; /* acento sobre negro */
  --copper-chip: #f1dcc7;

  --f-display: "Anton", "Bebas Neue", Impact, sans-serif;
  --f-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);

  --gutter: clamp(16px, 4vw, 40px);
  --max: 1280px;
  --section: clamp(96px, 14vw, 200px);
  --r-card: 28px;
  --r-arc: clamp(36px, 6vw, 64px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 400 17px/1.55 var(--f-body);
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
ul, ol, dl, dd, figure, blockquote { margin: 0; padding: 0; }
ul, ol { list-style: none; }
h1, h2, h3, p { margin: 0; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; border-radius: 6px; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--ink); color: var(--paper); padding: 10px 16px; border-radius: 8px; }
.skip:focus { top: 16px; }

/* Tipografía */
.display, .display-md {
  font-family: var(--f-display);
  font-weight: 400;
  text-transform: uppercase;
  line-height: 0.9;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
.display { font-size: clamp(64px, min(9vw, 15svh), 150px); }
.display-md { font-size: clamp(48px, 7vw, 104px); }
.lead { font-size: clamp(18px, 1.5vw, 21px); line-height: 1.45; max-width: 34ch; color: var(--graphite); }

/* Botones */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 0 26px;
  border-radius: 8px; border: 0;
  font-weight: 500; font-size: 16px; letter-spacing: -0.01em;
  text-decoration: none; cursor: pointer;
  transition: transform 160ms var(--ease-out), background-color 200ms ease, color 200ms ease;
}
.btn:active { transform: scale(0.97); }
.btn-dark { background: var(--ink); color: var(--paper); }
.btn-ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn-copper { background: var(--copper); color: var(--paper); }
.btn-sm { min-height: 40px; padding: 0 18px; font-size: 15px; }
.btn-lg { min-height: 60px; padding: 0 32px; font-size: 17px; }
@media (hover: hover) and (pointer: fine) {
  .btn-dark:hover { background: var(--graphite); }
  .btn-ghost:hover { background: var(--ink); color: var(--paper); }
  .btn-copper:hover { background: #864c22; }
}

/* Navegación */
.nav-wrap { position: sticky; top: 0; z-index: 50; padding: 14px var(--gutter) 0; pointer-events: none; }
.nav {
  pointer-events: auto;
  max-width: var(--max); margin: 0 auto;
  display: flex; align-items: center; gap: 24px;
  background: var(--ink); color: var(--paper);
  border-radius: 48px; padding: 6px 8px 6px 18px;
}
.nav-logo img { height: 46px; width: auto; }
.nav-links { display: flex; gap: 28px; margin-left: auto; font-size: 15px; }
.nav-links a { text-decoration: none; color: #d6d6d6; transition: color 200ms ease; }
.nav-links a:hover { color: var(--paper); }
.nav .btn { border-radius: 40px; }

/* Portada */
.hero {
  position: relative;
  min-height: min(100svh, 980px);
  margin-top: -66px;  /* la barra flota sobre la foto */
  background: #d9d8d8; /* igual al fondo de la foto de portada */
  padding: 120px var(--gutter) 72px;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero-media { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: contain; object-position: 100% 50%; }
.hero-copy { position: relative; width: 100%; max-width: var(--max); margin: 0 auto; }
.hero .display { max-width: 10ch; }
.hero .lead { margin-top: 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.chip { background: var(--copper-chip); color: var(--ink); border-radius: 64px; padding: 6px 14px; font-size: 14px; font-weight: 500; }

/* Bloques con arco superior */
.arc { border-radius: var(--r-arc) var(--r-arc) 0 0; }
.arc-dark { background: var(--ink); color: var(--paper); }
.arc-light { background: var(--paper); }

/* Cifras */
.figures { padding: clamp(56px, 8vw, 104px) var(--gutter); }
.figures-grid { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.figure { display: flex; flex-direction: column-reverse; gap: 10px; }
.figure dd { font-family: var(--f-display); font-size: clamp(56px, 7vw, 112px); line-height: 0.9; color: var(--copper-bright); }
.figure dt { font-size: 16px; color: #bdbdbd; max-width: 18ch; }

/* Secciones */
.section { padding: var(--section) var(--gutter) 0; max-width: calc(var(--max) + 2 * var(--gutter)); margin: 0 auto; }
.section-head { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: end; }
.section-intro { max-width: 40ch; justify-self: end; color: var(--graphite); }

/* Catálogo */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 48px; }
.filter {
  border: 0; cursor: pointer;
  background: var(--paper); color: var(--ink);
  border-radius: 64px; min-height: 44px; padding: 0 20px; font-size: 15px; font-weight: 500;
  transition: background-color 200ms ease, color 200ms ease, transform 160ms var(--ease-out);
}
.filter:active { transform: scale(0.97); }
.filter.is-active { background: var(--ink); color: var(--paper); }
@media (hover: hover) and (pointer: fine) { .filter:not(.is-active):hover { background: var(--mist); } }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 24px; }
.card { background: var(--paper); border-radius: var(--r-card); padding: 10px 10px 18px; transition: opacity 240ms var(--ease-out), transform 240ms var(--ease-out); }
.card[hidden] { display: none; }
.card-media { aspect-ratio: 1; border-radius: 20px; overflow: hidden; background: var(--canvas); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 500ms var(--ease-out); }
@media (hover: hover) and (pointer: fine) { .card:hover .card-media img { transform: scale(1.04); } }
.card-label { margin: 16px 10px 0; font-weight: 500; font-size: 16px; }
.card-type { margin: 2px 10px 0; font-size: 14px; color: var(--slate); }
.grid-note { margin-top: 20px; font-size: 14px; color: var(--slate); }

/* Proceso */
.section-dark { background: var(--ink); color: var(--paper); margin-top: var(--section); padding: var(--section) var(--gutter); }
.process-inner { max-width: var(--max); margin: 0 auto; }
.process .display-md { max-width: 12ch; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 64px; }
.step { background: var(--graphite); border-radius: var(--r-card); padding: 28px 24px 32px; display: flex; flex-direction: column; gap: 12px; }
.step-n { font-family: var(--f-display); font-size: 64px; line-height: 0.9; color: var(--copper-bright); }
.step h3 { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; margin-top: 28px; }
.step p { color: #c4c4c4; font-size: 16px; line-height: 1.5; }

/* Historia */
.story { padding-top: var(--section); }
.story-card { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(32px, 5vw, 72px); padding: clamp(20px, 3vw, 32px); padding-bottom: clamp(40px, 5vw, 64px); border-radius: var(--r-arc) var(--r-arc) var(--r-card) var(--r-card); }
.story-media { border-radius: calc(var(--r-arc) - 16px) calc(var(--r-arc) - 16px) 20px 20px; overflow: hidden; }
.story-media img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
.story-copy { display: flex; flex-direction: column; gap: 22px; padding: clamp(8px, 2vw, 24px) clamp(0px, 2vw, 24px) 0 0; max-width: 56ch; }
.story-copy .display-md { font-size: clamp(44px, 5.4vw, 84px); }
.quote p { font-size: clamp(21px, 2vw, 26px); line-height: 1.3; letter-spacing: -0.02em; font-weight: 500; color: var(--copper); }
.story-copy > p { color: var(--graphite); }

/* Preguntas */
.faq { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: start; }
.faq .display-md { position: sticky; top: 110px; }
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.qa { background: var(--paper); border-radius: 22px; }
.qa h3 { font-size: inherit; font-weight: inherit; }
.qa button {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px;
  background: none; border: 0; cursor: pointer; text-align: left;
  padding: 22px 24px; font-size: 18px; font-weight: 500; letter-spacing: -0.015em;
}
.qa-icon { flex: none; position: relative; width: 28px; height: 28px; border-radius: 50%; background: var(--mist); transition: background-color 200ms ease, transform 250ms var(--ease-out); }
.qa-icon::before, .qa-icon::after { content: ""; position: absolute; left: 50%; top: 50%; width: 12px; height: 2px; background: currentColor; transform: translate(-50%, -50%); border-radius: 2px; }
.qa-icon::after { transform: translate(-50%, -50%) rotate(90deg); transition: transform 250ms var(--ease-out); }
.qa button[aria-expanded="true"] .qa-icon { background: var(--copper-chip); }
.qa button[aria-expanded="true"] .qa-icon::after { transform: translate(-50%, -50%) rotate(0deg); }
.qa-body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 280ms var(--ease-out); }
.qa-body > div { overflow: hidden; }
.qa-body p { padding: 0 24px 24px; max-width: 60ch; color: var(--graphite); }
.qa.is-open .qa-body { grid-template-rows: 1fr; }

/* Contacto */
.contact-card {
  background: var(--ink); color: var(--paper);
  border-radius: var(--r-arc);
  padding: clamp(36px, 6vw, 80px);
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; align-items: end;
}
.contact-main { display: flex; flex-direction: column; gap: 24px; align-items: flex-start; }
.contact-main .display-md { max-width: 11ch; }
.contact-main p { color: #c4c4c4; max-width: 36ch; }
.contact-main .btn { margin-top: 8px; }
.contact-list { display: flex; flex-direction: column; gap: 22px; }
.contact-list dt { font-size: 14px; color: #9a9a9a; }
.contact-list dd { font-size: 19px; margin-top: 2px; }
.contact-list a { text-decoration: none; }
.contact-list a:hover { text-decoration: underline; text-underline-offset: 4px; }
.hl { background: var(--copper-chip); color: var(--ink); border-radius: 6px; padding: 1px 8px; }

/* Pie */
.footer { padding: var(--section) var(--gutter) 28px; max-width: calc(var(--max) + 2 * var(--gutter)); margin: 0 auto; overflow: hidden; }
.footer-mark { font-family: var(--f-display); text-transform: uppercase; font-size: clamp(64px, 17.5vw, 248px); line-height: 0.82; letter-spacing: -0.01em; white-space: nowrap; }
.footer-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 24px; font-size: 14px; color: var(--slate); }
.footer-row a { color: var(--ink); }

/* Animación de entrada */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out); transition-delay: var(--d, 0ms); }
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 1ms !important; animation-duration: 1ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* Responsivo */
@media (max-width: 1024px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .figures-grid { grid-template-columns: repeat(2, 1fr); row-gap: 48px; }
}
@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav .btn { margin-left: auto; }
  .hero { min-height: auto; padding: 120px var(--gutter) 0; flex-direction: column; align-items: stretch; }
  .hero-media { position: relative; inset: auto; order: 2; margin: 24px calc(-1 * var(--gutter)) 0; }
  .hero-media img { height: auto; aspect-ratio: 1; object-fit: cover; object-position: 100% 50%; }
  .hero .display { max-width: none; }
  .section-head, .faq, .contact-card, .story-card { grid-template-columns: 1fr; }
  .section-intro { justify-self: start; }
  .faq .display-md { position: static; }
  .story-media img { min-height: 260px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .card { border-radius: 20px; padding: 6px 6px 14px; }
  .card-media { border-radius: 15px; }
  .card-label { margin: 12px 6px 0; font-size: 15px; }
  .card-type { margin: 0 6px; font-size: 13px; }
  .steps { grid-template-columns: 1fr; }
  .step h3 { margin-top: 16px; }
  .hero-actions .btn { flex: 1 1 100%; }
  .qa button { font-size: 17px; padding: 20px; }
  .qa-body p { padding: 0 20px 20px; }
  .nav { padding-left: 16px; }
  .nav-logo img { height: 36px; }
}