/* ==========================================================================
   Casa F21 — pàgina de projecte
   Pastor + Associates · sistema de marca de pastor-associates.com

   Criteri de disseny: blanc, una sola tinta, filets d'1 px i molt d'aire.
   El color de marca (verd) apareix només en interacció; res més el fa servir.
   ========================================================================== */

/* --- Tipografies de marca (Founders Grotesk, servides localment) --------- */
@font-face {
  font-family: 'PA';
  src: url('../fonts/4314light.woff2') format('woff2'),
       url('../fonts/4314light.woff') format('woff');
  font-weight: 300; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'PA';
  src: url('../fonts/2690Regular.woff2') format('woff2'),
       url('../fonts/2690Regular.woff') format('woff');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'PA';
  src: url('../fonts/82medium.woff2') format('woff2'),
       url('../fonts/82medium.woff') format('woff');
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'PA';
  src: url('../fonts/374italic-light.woff2') format('woff2'),
       url('../fonts/374italic-light.woff') format('woff');
  font-weight: 300; font-style: italic; font-display: swap;
}

/* --- Tokens ------------------------------------------------------------- */
:root {
  --ink: #0d0a59;              /* blau de marca: única tinta del text */
  --ink-70: rgba(13, 10, 89, .70);
  --ink-45: rgba(13, 10, 89, .45);
  --ink-14: rgba(13, 10, 89, .14);
  --ink-08: rgba(13, 10, 89, .08);
  --green: #3dd990;
  --paper: #fff;

  --stack: 'PA', 'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* Marge lateral únic: tot el document s'hi alinea. */
  --pad: clamp(1.25rem, 5vw, 6rem);
  --maxw: 1600px;

  /* Ritme vertical. Els blocs de text respiren més que les imatges. */
  --gap-fig: clamp(3rem, 7vw, 7rem);
  --gap-sec: clamp(6rem, 14vh, 13rem);

  --ease: cubic-bezier(.22, .61, .36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--stack);
  font-weight: 300;
  font-size: clamp(1rem, .95rem + .2vw, 1.0625rem);
  line-height: 1.62;
  letter-spacing: .002em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }

h1, h2, p, dl, dd, figure { margin: 0; }
dd { margin-inline-start: 0; }

::selection { background: var(--green); color: var(--ink); }

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

.skip {
  position: absolute; left: -9999px;
  background: var(--ink); color: #fff;
  padding: .75rem 1rem; z-index: 200;
}
.skip:focus { left: 1rem; top: 1rem; }

/* Etiquetes petites: el recurs tipogràfic que sosté tota la pàgina. */
.eyebrow, .num, .head a, .foot__lbl, .fact dt, .specs__l dt,
.pnav em, .note__t span, .specs__t span {
  font-size: .6875rem;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  line-height: 1.4;
}

/* --- Capçalera ---------------------------------------------------------- */
.head {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: clamp(1rem, 2.2vw, 1.75rem) 0;
  color: #fff;
  transition: background-color .45s var(--ease), color .45s var(--ease),
              padding .45s var(--ease), box-shadow .45s var(--ease);
}
.head__in {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.head__logo img {
  height: clamp(26px, 2.6vw, 34px);
  width: auto;
  /* El logotip original és blau; sobre la portada el volem blanc. */
  filter: brightness(0) invert(1);
  transition: filter .45s var(--ease);
}
.nav { display: flex; gap: clamp(1.25rem, 3vw, 2.75rem); }
.nav a { position: relative; padding-block: .25rem; }
.nav a::after {
  content: '';
  position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--green);
  transition: right .4s var(--ease);
}
.nav a:hover::after, .nav a:focus-visible::after { right: 0; }

/* Estat compacte: a partir del primer scroll la capçalera es fa opaca. */
.head.is-solid {
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(1.4) blur(10px);
  color: var(--ink);
  box-shadow: 0 1px 0 var(--ink-08);
  padding-block: clamp(.7rem, 1.4vw, 1rem);
}
.head.is-solid .head__logo img { filter: none; }

/* --- Portada ------------------------------------------------------------ */
.hero {
  width: 100%;
  height: 100svh;
  min-height: 30rem;
  overflow: hidden;
}
.hero img { width: 100%; height: 100%; object-fit: cover; }

.hero--end {
  height: clamp(24rem, 78svh, 46rem);
  margin-top: var(--gap-sec);
}

/* --- Contenidor comú ---------------------------------------------------- */
.intro, .note, .specs, .pnav, .foot__in, .fig--wide, .fig--halfL,
.fig--halfR, .pair {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* --- Títol i fitxa ------------------------------------------------------ */
.intro {
  padding-block: clamp(4rem, 10vh, 8.5rem) 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.eyebrow { color: var(--ink-45); margin-bottom: 1.4rem; }

.title {
  font-size: clamp(2.75rem, 7.5vw, 6.5rem);
  font-weight: 300;
  line-height: .96;
  letter-spacing: -.028em;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.lede {
  max-width: 34ch;
  font-size: clamp(1.0625rem, 1rem + .35vw, 1.375rem);
  line-height: 1.5;
  color: var(--ink-70);
}

/* Fitxa tècnica: dues columnes de parells etiqueta/valor, separats per filet. */
.facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(1.5rem, 3vw, 3rem);
  border-top: 1px solid var(--ink-14);
}
.fact {
  padding-block: 1.15rem;
  border-bottom: 1px solid var(--ink-14);
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 1rem;
  align-items: baseline;
}
.fact dt { color: var(--ink-45); }
.fact dd { font-weight: 400; line-height: 1.45; }
.fact sup { font-size: .7em; vertical-align: super; }

/* Valor encara per confirmar: es veu, però no crida. */
.pend { color: var(--ink-45); }
.pend::after {
  content: 'a confirmar';
  display: block;
  font-size: .625rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--green);
}

/* --- Blocs de text ------------------------------------------------------ */
.note {
  padding-block: var(--gap-sec);
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.note__t {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: -.005em;
  display: flex;
  gap: 1.25rem;
  align-items: baseline;
}
.note__t span, .specs__t span { color: var(--green); }
.note__b {
  max-width: 62ch;
  display: grid;
  gap: 1.1em;
  font-size: clamp(1.0625rem, 1rem + .3vw, 1.25rem);
  line-height: 1.62;
}

/* --- Imatges ------------------------------------------------------------ */
.fig { margin-block: var(--gap-fig); }
.fig--wide  { }
.fig--halfL { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(1.5rem, 3vw, 3rem); align-items: end; }
.fig--halfR { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(1.5rem, 3vw, 3rem); align-items: end; }
.fig--halfR img { grid-column: 2; }
.fig--halfR figcaption { grid-row: 1; grid-column: 1; }

.pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 2.5rem);
  margin-block: var(--gap-fig);
}
.pair .fig { margin-block: 0; }

figcaption {
  margin-top: .85rem;
  font-size: .8125rem;
  line-height: 1.5;
  color: var(--ink-45);
  display: flex;
  gap: .75rem;
  align-items: baseline;
  max-width: 46ch;
}
.num { color: var(--green); flex: none; }

/* Les imatges de la galeria s'amplien; el cursor ho ha de dir. */
.fig img {
  width: 100%;
  cursor: zoom-in;
  transition: opacity .3s var(--ease);
}
.fig img:hover { opacity: .88; }

/* --- Materials ---------------------------------------------------------- */
.specs {
  padding-block: var(--gap-sec) 0;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.specs__t {
  font-size: 1rem;
  font-weight: 400;
  display: flex;
  gap: 1.25rem;
  align-items: baseline;
}
.specs__l { border-top: 1px solid var(--ink-14); }
.specs__l > div {
  display: grid;
  grid-template-columns: minmax(0, 10rem) minmax(0, 1fr);
  gap: clamp(1rem, 2vw, 2rem);
  padding-block: 1.1rem;
  border-bottom: 1px solid var(--ink-14);
  align-items: baseline;
}
.specs__l dt { color: var(--ink-45); }
.specs__l dd { color: var(--ink-70); line-height: 1.5; }

/* --- Navegació entre projectes ------------------------------------------ */
.pnav {
  padding-block: var(--gap-sec);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  flex-wrap: wrap;
}
.pnav a { display: grid; gap: .5rem; }
.pnav em {
  font-style: normal;
  color: var(--ink-45);
}
.pnav span {
  font-size: clamp(1.5rem, 3.5vw, 2.75rem);
  font-weight: 300;
  letter-spacing: -.02em;
  line-height: 1.1;
  position: relative;
  display: inline-block;
  padding-bottom: .15em;
}
.pnav span::after {
  content: '';
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .5s var(--ease);
}
.pnav__next { text-align: right; justify-items: end; }
.pnav__next span::after { transform-origin: right; }
.pnav a:hover span::after, .pnav a:focus-visible span::after { transform: scaleX(1); }

/* --- Peu ---------------------------------------------------------------- */
.foot {
  border-top: 1px solid var(--ink-14);
  padding-block: clamp(3rem, 7vh, 5.5rem) clamp(2rem, 4vh, 3rem);
}
.foot__in {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.foot p { color: var(--ink-70); line-height: 1.6; }
.foot__name {
  font-size: clamp(1.125rem, 1.6vw, 1.375rem);
  font-weight: 400;
  color: var(--ink) !important;
  margin-bottom: .35rem;
  letter-spacing: -.01em;
}
.foot__lbl { color: var(--ink-45) !important; margin-bottom: .6rem; }
.foot a {
  background-image: linear-gradient(var(--green), var(--green));
  background-size: 0 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size .4s var(--ease);
}
.foot a:hover, .foot a:focus-visible { background-size: 100% 1px; }
.foot__legal {
  grid-column: 1 / -1;
  margin-top: clamp(2rem, 5vh, 4rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--ink-08);
  font-size: .8125rem;
  color: var(--ink-45) !important;
}

/* --- Lightbox ----------------------------------------------------------- */
.lb {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(255, 255, 255, .985);
  display: grid;
  place-items: center;
  padding: clamp(2.5rem, 6vw, 5rem);
  opacity: 0;
  transition: opacity .35s var(--ease);
}
.lb[hidden] { display: none; }
.lb.is-open { opacity: 1; }
.lb__img {
  max-width: 100%;
  max-height: 84svh;
  object-fit: contain;
}
.lb__cap {
  position: absolute;
  left: clamp(1.25rem, 5vw, 3rem);
  bottom: clamp(1.25rem, 4vw, 2.25rem);
  font-size: .8125rem;
  color: var(--ink-45);
  max-width: 50ch;
}
.lb button {
  position: absolute;
  background: none;
  border: 0;
  color: var(--ink);
  font-family: var(--stack);
  font-weight: 300;
  cursor: pointer;
  line-height: 1;
  padding: .5rem .75rem;
  transition: color .25s var(--ease);
}
.lb button:hover { color: var(--green); }
.lb__x { top: clamp(1rem, 3vw, 2rem); right: clamp(1rem, 3vw, 2rem); font-size: 2.25rem; }
.lb__p, .lb__n { top: 50%; transform: translateY(-50%); font-size: 3rem; }
.lb__p { left: clamp(.25rem, 2vw, 1.5rem); }
.lb__n { right: clamp(.25rem, 2vw, 1.5rem); }

body.lb-open { overflow: hidden; }

/* --- Revelat en entrar a pantalla --------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

/* --- Adaptació ---------------------------------------------------------- */
@media (max-width: 900px) {
  .intro { grid-template-columns: 1fr; }
  .note, .specs { grid-template-columns: 1fr; gap: 1.75rem; }
  .fig--halfL, .fig--halfR { grid-template-columns: 1fr; align-items: start; }
  .fig--halfR img { grid-column: 1; }
  .fig--halfR figcaption { grid-row: 2; grid-column: 1; }
  .foot__in { grid-template-columns: 1fr 1fr; }
  .foot__brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .facts { grid-template-columns: 1fr; }
  .fact { grid-template-columns: 6.5rem minmax(0, 1fr); }
  .specs__l > div { grid-template-columns: 1fr; gap: .3rem; }
  .pair { grid-template-columns: 1fr; gap: var(--gap-fig); }
  .nav { gap: 1.1rem; }
  .lb__p, .lb__n { font-size: 2rem; }
  .lb__cap { position: static; margin-top: 1rem; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

@media print {
  .head, .lb, .pnav { display: none; }
  .hero { height: auto; }
  .reveal { opacity: 1; transform: none; }
}