/* =========================================================================
   EHA Architecture — Design system
   Charte : rouge #c4191a — inspiration ory-architecture.com
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600;700;800;900&display=swap');

:root {
  --rouge: #c4191a;
  --rouge-fonce: #9c1315;
  --noir: #111111;
  --blanc: #ffffff;
  --gris: #6b6b6b;
  --gris-clair: #f4f4f4;
  --gris-bord: #e4e4e4;

  --header-h: 84px;
  --gouttiere: clamp(20px, 5vw, 72px);

  --sans: 'Archivo', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ----------------------------------------------------------------- Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--noir);
  background: var(--blanc);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }

/* ------------------------------------------------------------ Utilities */
.container { width: min(1440px, 100%); margin-inline: auto; padding-inline: var(--gouttiere); }

.eyebrow {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--rouge);
  display: inline-flex;
  align-items: center;
  gap: .6em;
}
.eyebrow::before {
  content: "";
  width: 30px; height: 2px;
  background: var(--rouge);
}

.section { padding-block: clamp(64px, 9vw, 130px); }
.section--gris { background: var(--gris-clair); }
.section--noir { background: var(--noir); color: var(--blanc); }

.section-head { max-width: 720px; margin-bottom: clamp(36px, 5vw, 64px); }
.section-head h2 {
  font-size: clamp(1.9rem, 4vw, 3.1rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -.02em;
  margin-top: .5rem;
}
.section-head p { margin-top: 1.1rem; color: var(--gris); font-size: 1.05rem; }
.section--noir .section-head p { color: #b9b9b9; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font-weight: 700;
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 15px 30px;
  background: var(--rouge);
  color: var(--blanc);
  transition: background .3s var(--ease), transform .3s var(--ease);
}
.btn:hover { background: var(--rouge-fonce); transform: translateY(-2px); }
.btn--ghost {
  background: transparent;
  color: var(--noir);
  border: 1.5px solid var(--noir);
}
.btn--ghost:hover { background: var(--noir); color: var(--blanc); }
.section--noir .btn--ghost { color: var(--blanc); border-color: rgba(255,255,255,.4); }
.section--noir .btn--ghost:hover { background: var(--blanc); color: var(--noir); }

/* ================================================================ HEADER */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: background .35s var(--ease), box-shadow .35s var(--ease);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Logo wordmark */
.logo { display: flex; align-items: center; gap: 12px; }
.logo__mark {
  font-weight: 900;
  font-size: 1.6rem;
  letter-spacing: -.04em;
  color: var(--rouge);
  line-height: 1;
}
.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.logo__text b { font-weight: 800; font-size: .95rem; letter-spacing: .02em; }
.logo__text span {
  font-size: .58rem;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--gris);
  margin-top: 3px;
}

/* Primary nav */
.nav { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 40px); }
.nav__link {
  position: relative;
  font-weight: 700;
  font-size: .92rem;
  letter-spacing: .01em;
  padding-block: 6px;
  color: var(--nav-fg, var(--noir));
  transition: color .25s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 2.5px;
  background: var(--rouge);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--rouge); }

.nav__search {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  color: var(--nav-fg, var(--noir));
  border: 1.5px solid transparent;
  border-radius: 50%;
  transition: border-color .25s var(--ease);
}
.nav__search:hover { border-color: currentColor; }

/* Header variants : transparent over hero (white text), solid on scroll/interior */
.site-header--overlay { --nav-fg: #ffffff; }
.site-header--overlay .logo__mark { color: var(--blanc); }
.site-header--overlay .logo__text span { color: rgba(255,255,255,.7); }

.site-header.is-scrolled,
.site-header--solid {
  background: var(--blanc);
  box-shadow: 0 1px 0 var(--gris-bord);
  --nav-fg: var(--noir);
}
.site-header.is-scrolled .logo__mark,
.site-header--solid .logo__mark { color: var(--rouge); }
.site-header.is-scrolled .logo__text span,
.site-header--solid .logo__text span { color: var(--gris); }

/* Burger */
.burger { display: none; width: 44px; height: 44px; position: relative; z-index: 120; }
.burger span {
  position: absolute; left: 10px; right: 10px; height: 2px;
  background: var(--nav-fg, var(--noir));
  transition: transform .3s var(--ease), opacity .2s var(--ease), background .3s;
}
.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 22px; }
.burger span:nth-child(3) { top: 29px; }
body.nav-open .burger span { background: var(--noir); }
body.nav-open .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .burger span:nth-child(2) { opacity: 0; }
body.nav-open .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ================================================================== HERO */
.hero { position: relative; height: 100vh; min-height: 620px; overflow: hidden; }

.hero__slides { position: absolute; inset: 0; }
.hero__slide {
  position: absolute; inset: 0;
  opacity: 0;
  transition: opacity 1.1s var(--ease);
}
.hero__slide.is-active { opacity: 1; }
.hero__slide img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.06);
  transition: transform 7s ease-out;
}
.hero__slide.is-active img { transform: scale(1); }
.hero__slide::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.35) 0%, rgba(0,0,0,.05) 35%, rgba(0,0,0,.55) 100%);
}

/* Vertical "architecture" signature */
.hero__vertical {
  position: absolute;
  left: clamp(14px, 2vw, 30px);
  bottom: clamp(120px, 22vh, 220px);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  color: var(--blanc);
  font-weight: 500;
  letter-spacing: .42em;
  text-transform: lowercase;
  font-size: .8rem;
  z-index: 3;
  opacity: .9;
}

.hero__caption {
  position: absolute;
  left: var(--gouttiere);
  bottom: clamp(36px, 7vh, 64px);
  color: var(--blanc);
  z-index: 3;
  max-width: 70%;
}
.hero__caption .tag {
  font-size: .72rem; font-weight: 700; letter-spacing: .2em;
  text-transform: uppercase; color: #ffd; opacity: .85;
}
.hero__caption h1,
.hero__caption .title {
  font-size: clamp(1.6rem, 4vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.05;
  margin-top: .4rem;
}
.hero__caption h1 b { color: var(--rouge); }

/* Dots */
.hero__dots {
  position: absolute;
  right: var(--gouttiere);
  bottom: clamp(40px, 7vh, 66px);
  display: flex;
  gap: 14px;
  z-index: 3;
}
.hero__dot {
  width: 11px; height: 11px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.75);
  background: transparent;
  transition: background .3s var(--ease), transform .3s var(--ease);
}
.hero__dot.is-active { background: var(--rouge); border-color: var(--rouge); transform: scale(1.15); }

.hero__arrows { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.hero__arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 54px; height: 54px;
  display: grid; place-items: center;
  color: var(--blanc);
  background: rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 50%;
  pointer-events: auto;
  transition: background .25s var(--ease);
}
.hero__arrow:hover { background: var(--rouge); border-color: var(--rouge); }
.hero__arrow--prev { left: clamp(16px, 3vw, 40px); }
.hero__arrow--next { right: clamp(16px, 3vw, 40px); }

/* ===================================================== PAGE (interior) hero */
.page-hero {
  padding-top: calc(var(--header-h) + clamp(50px, 8vw, 96px));
  padding-bottom: clamp(40px, 6vw, 72px);
  background: var(--gris-clair);
  border-bottom: 1px solid var(--gris-bord);
}
.page-hero h1 {
  font-size: clamp(2.2rem, 6vw, 4.4rem);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1;
  margin-top: .6rem;
}
.page-hero p { margin-top: 1.2rem; max-width: 620px; color: var(--gris); font-size: 1.08rem; }

/* ============================================================ GRID CARDS */
.grid {
  display: grid;
  gap: clamp(20px, 2.4vw, 34px);
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}
.grid--2 { grid-template-columns: repeat(auto-fill, minmax(440px, 1fr)); }

.card { position: relative; display: block; overflow: hidden; background: var(--gris-clair); }
.card__media { position: relative; overflow: hidden; aspect-ratio: 4 / 3; }
.card__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .7s var(--ease);
}
.card:hover .card__media img { transform: scale(1.06); }
.card__media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(0,0,0,.5));
  opacity: 0;
  transition: opacity .4s var(--ease);
}
.card:hover .card__media::after { opacity: 1; }

.card__body { padding: 20px 4px 8px; }
.card__meta { font-size: .74rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--rouge); }
.card__title { font-size: 1.24rem; font-weight: 800; letter-spacing: -.01em; margin-top: .35rem; transition: color .25s; }
.card:hover .card__title { color: var(--rouge); }
.card__excerpt { color: var(--gris); margin-top: .5rem; font-size: .96rem; }

/* Filters bar */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: clamp(28px, 4vw, 48px); }
.filter {
  font-weight: 700; font-size: .82rem; letter-spacing: .06em; text-transform: uppercase;
  padding: 9px 20px; border: 1.5px solid var(--gris-bord); border-radius: 40px;
  color: var(--gris);
  transition: all .25s var(--ease);
}
.filter:hover { border-color: var(--noir); color: var(--noir); }
.filter.is-active { background: var(--noir); border-color: var(--noir); color: var(--blanc); }

/* ============================================================= FEATURE split */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 80px); align-items: center; }
.split__media img { width: 100%; aspect-ratio: 16/11; object-fit: cover; }
.split h3 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.1; margin: .6rem 0 1rem; }
.split p { color: var(--gris); font-size: 1.04rem; }
.section--noir .split p { color: #bcbcbc; }
.split p + p { margin-top: 1rem; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 30px; margin-top: 50px; }
.stat__num { font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 900; letter-spacing: -.03em; color: var(--rouge); line-height: 1; }
.stat__label { margin-top: .5rem; font-size: .82rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--gris); }

/* Values */
.values { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: clamp(24px, 3vw, 44px); }
.value { padding-top: 24px; border-top: 3px solid var(--rouge); }
.value h4 { font-size: 1.2rem; font-weight: 800; margin-bottom: .5rem; }
.value p { color: var(--gris); font-size: .98rem; }

/* Team */
.team { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: clamp(20px, 2.5vw, 36px); }
.member img { width: 100%; aspect-ratio: 1; object-fit: cover; filter: grayscale(1); transition: filter .4s var(--ease); }
.member:hover img { filter: grayscale(0); }
.member b { display: block; margin-top: 14px; font-weight: 800; }
.member span { color: var(--rouge); font-size: .82rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }

/* ================================================================ CONTACT */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 5vw, 72px); }
.contact-info h3 { font-size: 1.3rem; font-weight: 800; margin-bottom: .3rem; }
.contact-block { padding: 22px 0; border-top: 1px solid var(--gris-bord); }
.contact-block:first-of-type { border-top: none; }
.contact-block .flag { font-size: .74rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; color: var(--rouge); }
.contact-block p { margin-top: .5rem; color: var(--gris); }
.contact-block a { font-weight: 600; }
.contact-block a:hover { color: var(--rouge); }

.form { display: grid; gap: 18px; }
.field { display: grid; gap: 8px; }
.field label { font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.field input, .field textarea {
  font-family: inherit; font-size: 1rem;
  padding: 14px 16px;
  border: 1.5px solid var(--gris-bord);
  background: var(--blanc);
  transition: border-color .25s var(--ease);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--rouge); }
.field textarea { resize: vertical; min-height: 140px; }

.map-placeholder {
  margin-top: 40px; aspect-ratio: 21/9;
  background: repeating-linear-gradient(45deg, #ececec, #ececec 14px, #f4f4f4 14px, #f4f4f4 28px);
  display: grid; place-items: center;
  color: var(--gris); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; font-size: .8rem;
  border: 1px solid var(--gris-bord);
}

/* ================================================================= FOOTER */
.site-footer { background: var(--noir); color: #d9d9d9; padding-block: clamp(56px, 7vw, 90px) 30px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand .logo__mark { color: var(--blanc); font-size: 2rem; }
.footer-brand p { margin-top: 18px; max-width: 300px; color: #9a9a9a; font-size: .95rem; }
.footer-col h5 { font-size: .76rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; color: var(--blanc); margin-bottom: 16px; }
.footer-col a, .footer-col p { display: block; color: #9a9a9a; font-size: .95rem; padding: 5px 0; transition: color .2s; }
.footer-col a:hover { color: var(--rouge); }
.footer-bottom {
  margin-top: clamp(40px, 5vw, 64px); padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.12);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: .82rem; color: #7c7c7c;
}
.footer-bottom a:hover { color: var(--blanc); }

/* =================================================== MOBILE NAV / RESPONSIVE */
@media (max-width: 900px) {
  .burger { display: block; }
  .nav {
    position: fixed; inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: 26px;
    background: var(--blanc);
    --nav-fg: var(--noir);
    transform: translateX(100%);
    transition: transform .45s var(--ease);
  }
  body.nav-open .nav { transform: translateX(0); }
  .nav__link { font-size: 1.5rem; }
  .nav__search { display: none; }
  body.nav-open { overflow: hidden; }

  .footer-top { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  :root { --header-h: 70px; }
  .hero__caption { max-width: 88%; }
  .hero__arrow { display: none; }
  .footer-top { grid-template-columns: 1fr; }
  .grid, .grid--2 { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}

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