/* NCT 360 · web comercial · estilos base
   Tokens derivados de assets/brand/nct-brand-tokens.css (tema oscuro, rojo NCT, Poppins/Oswald).
   Fuentes alojadas en el propio sitio: fonts/fonts.css (cada página lo enlaza antes de esta hoja).
   Contraste: texto normal >= 4.5:1 sobre #0F0F0F / #1A1A1A; boton primario #E00000 con texto blanco = 5.0:1. */

:root {
  --nct-red: #F00000;
  --nct-red-dark: #B80000;
  --nct-orange: #FF5A1F;
  --nct-black: #0F0F0F;
  --nct-gray-900: #1A1A1A;
  --nct-gray-800: #242424;
  --nct-gray-700: #333333;
  --nct-gray-500: #767676;
  --nct-gray-300: #C9C9C9;
  --nct-gray-100: #F7F7F7;
  --nct-white: #FFFFFF;
  --nct-green: #27A300;
  --nct-yellow: #EABE12;

  /* semanticos */
  --bg: var(--nct-black);
  --surface: var(--nct-gray-900);
  --surface-2: var(--nct-gray-800);
  --border: var(--nct-gray-700);
  --text: var(--nct-white);
  --text-2: #B3B3B3;            /* 8.6:1 sobre --bg, 7.7:1 sobre --surface */
  --accent: var(--nct-red);
  --cta: #E00000;               /* blanco sobre #E00000 = 5.0:1 (AA texto normal) */
  --cta-hover: #C40000;
  --ok: var(--nct-green);
  --warn: var(--nct-yellow);
  --focus: var(--nct-white);

  --font-display: "Oswald", "Arial Narrow", Arial, sans-serif;
  --font-body: "Poppins", Arial, Helvetica, sans-serif;

  --radius: 12px;
  --radius-pill: 35px;
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);

  --s-1: 4px; --s-2: 8px; --s-3: 12px; --s-4: 16px; --s-5: 24px; --s-6: 32px; --s-7: 48px; --s-8: 64px; --s-9: 96px;
  --container: 1180px;
  --gutter: 16px;
  --header-h: 64px;
}

@media (min-width: 768px) { :root { --gutter: 24px; } }
@media (min-width: 1024px) { :root { --gutter: 32px; } }

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

img, svg { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 { margin: 0 0 var(--s-4); line-height: 1.15; }
h1, h2 {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .01em;
}
h1 { font-size: clamp(2.125rem, 1.4rem + 3.6vw, 4rem); letter-spacing: -.005em; }
h2 { font-size: clamp(1.75rem, 1.3rem + 2vw, 2.75rem); }
h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.125rem; }
h4 { font-family: var(--font-body); font-weight: 600; font-size: 1rem; }

p { margin: 0 0 1em; max-width: 66ch; }
p:last-child { margin-bottom: 0; }
.lead { font-size: 1.125rem; color: var(--text-2); }
.muted { color: var(--text-2); }
small, .small { font-size: .875rem; }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
li + li { margin-top: .4em; }
strong { font-weight: 600; }

a { color: var(--text); text-decoration: underline; text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { color: var(--nct-gray-300); }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute; left: var(--s-4); top: -100px;
  background: var(--nct-white); color: var(--nct-black);
  padding: var(--s-2) var(--s-4); border-radius: var(--radius-pill); z-index: 100;
  font-weight: 600; text-decoration: none;
}
.skip-link:focus { top: var(--s-3); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ----- layout ----- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--s-8); }
@media (min-width: 1024px) { .section { padding-block: var(--s-9); } }
.section--alt { background: var(--surface); }
.section__head { max-width: 760px; margin-bottom: var(--s-6); }
.section__head p { max-width: 66ch; }
.eyebrow {
  display: inline-block; margin-bottom: var(--s-3);
  font-family: var(--font-display); font-weight: 500; font-size: .95rem;
  letter-spacing: .12em; text-transform: uppercase; color: var(--nct-orange);
}
.grid { display: grid; gap: var(--s-4); }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
.grid--4 { grid-template-columns: 1fr; }
@media (min-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.split { display: grid; gap: var(--s-6); align-items: center; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; gap: var(--s-7); } }
.split > * { min-width: 0; }

/* ----- botones (pastilla, >= 44 px de alto) ----- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  min-height: 48px; padding: .75rem 1.5rem;
  border-radius: var(--radius-pill); border: 2px solid transparent;
  font: 600 1rem/1 var(--font-body); text-decoration: none; cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease, transform .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--cta); color: var(--nct-white); }
.btn--primary:hover { background: var(--cta-hover); color: var(--nct-white); }
.btn--secondary { background: transparent; color: var(--nct-white); border-color: var(--nct-gray-300); }
.btn--secondary:hover { border-color: var(--nct-white); background: rgba(255, 255, 255, .06); color: var(--nct-white); }
.btn--ghost { background: transparent; color: var(--nct-white); border-color: var(--border); }
.btn--ghost:hover { border-color: var(--nct-gray-300); color: var(--nct-white); }
.btn--whatsapp { background: var(--nct-green); color: var(--nct-black); }   /* negro sobre verde = 5.8:1 */
.btn--whatsapp:hover { background: #2FBF00; color: var(--nct-black); }
.btn--small { min-height: 40px; padding: .5rem 1.1rem; font-size: .9375rem; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; transform: none; }
.btn .arrow { font-weight: 600; }

/* ----- cabecera ----- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(15, 15, 15, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); min-height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: var(--s-3); text-decoration: none; color: var(--text); flex-shrink: 0; white-space: nowrap; }
.brand img { height: 30px; width: auto; }
.brand picture { display: contents; } /* <picture> (WebP + PNG) must not change the flex layout of the logo */
.brand__word { font-family: var(--font-display); font-weight: 600; font-size: 1.25rem; letter-spacing: .06em; text-transform: uppercase; }
.brand__word span { color: var(--accent); }
.nav { display: flex; align-items: center; gap: var(--s-4); }
.nav__links { display: none; gap: var(--s-4); list-style: none; margin: 0; padding: 0; }
.nav__links li { margin: 0; }
.nav__links a { text-decoration: none; color: var(--text-2); font-weight: 500; font-size: .9rem; padding: .5rem 0; white-space: nowrap; }
.nav__links a:hover, .nav__links a[aria-current="true"] { color: var(--text); }
.nav__toggle { display: inline-flex; }
.nav .btn { white-space: nowrap; }
@media (min-width: 1200px) {
  .nav__links { display: flex; }
  .nav__toggle { display: none; }
}
.nav__links.is-open {
  display: flex; flex-direction: column; gap: 0;
  position: absolute; left: 0; right: 0; top: var(--header-h);
  background: var(--surface); border-bottom: 1px solid var(--border); padding: var(--s-3) var(--gutter) var(--s-4);
}
.nav__links.is-open a { display: block; padding: .8rem 0; border-bottom: 1px solid var(--border); font-size: 1.05rem; }
.nav__links.is-open li:last-child a { border-bottom: 0; }
.nav__links.is-open li + li { margin-top: 0; }
.lang-switch { font-size: .875rem; color: var(--text-2); text-decoration: none; padding: .5rem; }
/* Cabecera de la web y de las paginas legales con el selector de idioma (componente en idiomas.css).
   Movil: logo + CTA corto + selector + Menu caben desde 360 px (a 375 px sobran ~25 px con "Fermer", la etiqueta mas larga).
   < 720 px: CTA corto y huecos de 8 px · < 480 px: sin la palabra "NCT 360" (el enlace conserva su aria-label) ni la flecha
   del selector · < 360 px: sin CTA de cabecera (el del hero queda justo debajo) ni boton "Volver". */
.nav__demo-short { display: none; }
@media (max-width: 719px) {
  .header--web .header__inner, .header--web .nav { gap: var(--s-2); }
  .header--web .nav .btn--small { padding-inline: .8rem; }
  .header--web .nav__demo-full { display: none; }
  .header--web .nav__demo-short { display: inline; }
}
@media (max-width: 479px) {
  .header--web .brand__word { display: none; }
  .header--web .idiomas > summary::after { display: none; }
}
@media (max-width: 359px) {
  .header--web .nav__demo, .header--web .nav__back { display: none; }
}

/* ----- tarjetas ----- */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: var(--s-5); min-width: 0;
}
.section--alt .card { background: var(--surface-2); }
.card h3 { margin-bottom: var(--s-2); }
.card p { max-width: none; }
.card__icon {
  width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center;
  background: rgba(240, 0, 0, .12); color: var(--nct-orange); margin-bottom: var(--s-4);
}
.card__icon svg { width: 26px; height: 26px; }
.card ul { margin: var(--s-3) 0 0; padding-left: 1.1em; color: var(--text-2); font-size: .95rem; }
.card ul li::marker { color: var(--accent); }

/* ----- pie ----- */
.footer { border-top: 1px solid var(--border); padding-block: var(--s-7) var(--s-6); color: var(--text-2); font-size: .9375rem; }
.footer__grid { display: grid; gap: var(--s-6); }
@media (min-width: 768px) { .footer__grid { grid-template-columns: 2fr 1fr 1fr; } }
.footer h4 { color: var(--text); margin-bottom: var(--s-3); }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li + li { margin-top: .5em; }
.footer a { color: var(--text-2); }
.footer a:hover { color: var(--text); }
.footer__bottom { margin-top: var(--s-6); padding-top: var(--s-4); border-top: 1px solid var(--border); font-size: .8125rem; display: flex; flex-wrap: wrap; gap: var(--s-3) var(--s-5); }

/* ----- utilidades ----- */
.stack > * + * { margin-top: var(--s-4); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--s-3); align-items: center; }
.note { font-size: .875rem; color: var(--text-2); }
.tag {
  display: inline-block; padding: .2em .7em; border-radius: var(--radius-pill);
  background: var(--surface-2); border: 1px solid var(--border); font-size: .8125rem; font-weight: 500; color: var(--text);
}
.tag--orange { border-color: var(--nct-orange); color: var(--nct-orange); }
.tag--green { border-color: var(--nct-green); color: #5FD63A; }
.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li { position: relative; padding-left: 1.75em; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: .45em; width: 1em; height: 1em; border-radius: 50%;
  background: var(--ok) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%230F0F0F' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
}
.legal-page { padding-block: var(--s-7) var(--s-8); max-width: 780px; }
.legal-page h2 { font-size: 1.5rem; margin-top: var(--s-6); }
.legal-page mark, .form mark { background: rgba(234, 190, 18, .25); color: var(--nct-white); padding: 0 .25em; border-radius: 3px; }

/* The hidden attribute always wins over component display rules (.form { display: grid } etc.). */
[hidden] { display: none !important; }