/* ═══════════════════════════════════════════════════════
   CARNEL AGENCY — Maison de Gestion Immobilière Privée
   Charte : Noir profond #0D0D0D · Blanc cassé #F7F5F2
            Champagne #C8A86B · Gris pierre #A5A5A5
   ═══════════════════════════════════════════════════════ */

:root {
  --noir: #0D0D0D;
  --blanc: #F7F5F2;
  --champagne: #C8A86B;
  --pierre: #A5A5A5;
  --serif: "Cormorant Garamond", "Didot", Georgia, serif;
  --sans: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ease-slow: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 88px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--sans);
  font-weight: 300;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--noir);
  background: var(--blanc);
  -webkit-font-smoothing: antialiased;
}

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

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

/* ─────────────── Layout ─────────────── */

.container {
  width: min(1200px, 90vw);
  margin-inline: auto;
}

.container--narrow { width: min(820px, 90vw); }

.section { padding: clamp(6rem, 12vw, 10rem) 0; }

.section--dark {
  background: var(--noir);
  color: var(--blanc);
}

.section--tinted { background: #EFEBE4; }

/* ─────────────── Titres & ornements ─────────────── */

.section__eyebrow {
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--champagne);
  margin-bottom: 1.75rem;
}

.section__eyebrow--light { color: var(--champagne); }

.section__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.4rem, 5vw, 3.75rem);
  line-height: 1.12;
  letter-spacing: 0.01em;
  margin-bottom: 2rem;
}

.section__title em,
.vision__title em,
.hero__title em {
  font-style: italic;
  font-weight: 400;
  color: var(--champagne);
}

.section__title--light { color: var(--blanc); }

.section__lead {
  max-width: 44rem;
  color: var(--pierre);
  margin-bottom: 4rem;
}

/* ─────────────── Header ─────────────── */

.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(200, 168, 107, 0.18);
  transition: background 0.8s var(--ease-slow);
}

.header__inner {
  width: min(1360px, 94vw);
  margin-inline: auto;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  height: 64px;
  width: 64px;
  object-fit: cover;
  transition: opacity 0.6s var(--ease-slow);
}

.header__brand:hover .header__logo { opacity: 0.85; }

.header__nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.header__nav a {
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blanc);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color 0.5s var(--ease-slow), border-color 0.5s var(--ease-slow);
}

.header__nav a:hover {
  color: var(--champagne);
  border-bottom-color: var(--champagne);
}

.header__cta {
  border: 1px solid var(--champagne) !important;
  color: var(--champagne) !important;
  padding: 0.7rem 1.5rem !important;
  transition: background 0.5s var(--ease-slow), color 0.5s var(--ease-slow) !important;
}

.header__cta:hover {
  background: var(--champagne);
  color: var(--noir) !important;
}

.header__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  position: relative;
  z-index: 110;
}

.header__toggle span {
  display: block;
  width: 26px;
  height: 1px;
  background: var(--blanc);
  margin: 8px auto;
  transition: transform 0.5s var(--ease-slow), opacity 0.5s;
}

.header__toggle[aria-expanded="true"] span:first-child { transform: translateY(4.5px) rotate(45deg); }
.header__toggle[aria-expanded="true"] span:last-child { transform: translateY(-4.5px) rotate(-45deg); }

/* ─────────────── Hero — Accueil immersif ─────────────── */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  color: var(--blanc);
}

.hero__image {
  position: absolute;
  inset: -5%;
  background: #3d3831 url("https://images.unsplash.com/photo-1493809842364-78817add7ffb?q=80&w=2000&auto=format&fit=crop") center / cover no-repeat;
  animation: hero-drift 28s var(--ease-slow) both;
}

@keyframes hero-drift {
  from { transform: scale(1.12); }
  to   { transform: scale(1); }
}

.hero__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(13, 13, 13, 0.62) 0%,
    rgba(13, 13, 13, 0.38) 45%,
    rgba(13, 13, 13, 0.72) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  padding: calc(var(--header-h) + 3rem) 1.5rem 3rem;
  max-width: 60rem;
}

.hero__surtitle {
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--champagne);
  margin-bottom: 2.25rem;
}

.hero__title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.75rem, 7vw, 5.25rem);
  line-height: 1.1;
  margin-bottom: 2rem;
}

.hero__subtitle {
  font-size: 1.0625rem;
  font-weight: 300;
  color: rgba(247, 245, 242, 0.85);
  margin-bottom: 3.25rem;
}

.hero__button {
  display: inline-block;
  font-size: 0.8125rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--blanc);
  border: 1px solid rgba(247, 245, 242, 0.55);
  padding: 1.1rem 2.9rem;
  transition: background 0.7s var(--ease-slow), color 0.7s var(--ease-slow), border-color 0.7s var(--ease-slow);
}

.hero__button:hover {
  background: var(--champagne);
  border-color: var(--champagne);
  color: var(--noir);
}

.hero__scroll {
  position: absolute;
  bottom: 0;
  left: 50%;
  z-index: 2;
  height: 90px;
  width: 1px;
}

.hero__scroll-line {
  position: absolute;
  inset: 0;
  background: rgba(247, 245, 242, 0.45);
  overflow: hidden;
}

.hero__scroll-line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--champagne);
  transform: translateY(-100%);
  animation: scroll-hint 3.2s var(--ease-slow) infinite;
}

@keyframes scroll-hint {
  0%   { transform: translateY(-100%); }
  55%  { transform: translateY(0); }
  100% { transform: translateY(100%); }
}

/* ─────────────── Vision ─────────────── */

.vision { text-align: center; }

.vision__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  line-height: 1.12;
  margin-bottom: 3.5rem;
}

.vision__body p {
  margin-bottom: 1.9rem;
  color: #3c3a37;
}

.vision__body p:first-child {
  font-family: var(--serif);
  font-size: 1.45rem;
  line-height: 1.55;
  color: var(--noir);
}

.vision__signature {
  margin-top: 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.vision__rule {
  display: block;
  width: 1px;
  height: 70px;
  background: var(--champagne);
}

.vision__signature p {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--pierre);
}

/* ─────────────── Trois piliers ─────────────── */

.piliers { text-align: center; }

.piliers__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2.5rem, 5vw, 5rem);
  margin-top: 5rem;
}

.pilier__numeral {
  display: block;
  font-family: var(--serif);
  font-size: 3.4rem;
  font-weight: 300;
  color: var(--champagne);
  margin-bottom: 1.5rem;
}

.pilier__name {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.75rem;
  letter-spacing: 0.04em;
  margin-bottom: 1.25rem;
}

.pilier__text {
  font-size: 0.975rem;
  color: rgba(247, 245, 242, 0.72);
}

/* ─────────────── Notre méthode ─────────────── */

.methode__layout {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: clamp(3rem, 7vw, 7rem);
  align-items: stretch;
}

.methode__media { position: relative; }

.methode__image {
  position: sticky;
  top: calc(var(--header-h) + 2rem);
  height: min(72vh, 640px);
  background: #cfc8bd url("https://images.unsplash.com/photo-1600607687939-ce8a6c25118c?q=80&w=1400&auto=format&fit=crop") center / cover no-repeat;
}

.methode__steps {
  list-style: none;
  margin-top: 3.5rem;
  display: grid;
  gap: 3rem;
}

.methode__step {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(13, 13, 13, 0.1);
}

.methode__step:last-child { border-bottom: none; padding-bottom: 0; }

.methode__num {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 300;
  color: var(--champagne);
  line-height: 1.2;
}

.methode__step h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.5rem;
  margin-bottom: 0.6rem;
}

.methode__step p {
  font-size: 0.975rem;
  color: #55524e;
}

/* ─────────────── Nos services ─────────────── */

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 4vw, 3.5rem);
}

.service__image {
  height: 340px;
  background-color: #d8d2c8;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  margin-bottom: 1.9rem;
  transition: opacity 0.8s var(--ease-slow);
}

.service:hover .service__image { opacity: 0.88; }

.service__image--1 { background-image: url("https://images.unsplash.com/photo-1618221195710-dd6b41faaea6?q=80&w=1200&auto=format&fit=crop"); }
.service__image--2 { background-image: url("https://images.unsplash.com/photo-1512918728675-ed5a9ecdebfd?q=80&w=1200&auto=format&fit=crop"); }
.service__image--3 { background-image: url("https://images.unsplash.com/photo-1560448204-e02f11c3d0e2?q=80&w=1200&auto=format&fit=crop"); }

.service__name {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.6rem;
  margin-bottom: 0.8rem;
}

.service__text {
  font-size: 0.95rem;
  color: #55524e;
}

/* ─────────────── Pourquoi Carnel Agency ─────────────── */

.pourquoi { text-align: center; }

.pourquoi__list {
  list-style: none;
  margin-top: 4.5rem;
  display: grid;
  gap: 0;
  text-align: left;
}

.pourquoi__item {
  padding: 2.6rem 0;
  border-top: 1px solid rgba(200, 168, 107, 0.25);
  display: grid;
  grid-template-columns: minmax(200px, 2fr) 3fr;
  gap: 1.5rem;
  align-items: baseline;
}

.pourquoi__item:last-child { border-bottom: 1px solid rgba(200, 168, 107, 0.25); }

.pourquoi__item h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.65rem;
  color: var(--champagne);
}

.pourquoi__item p {
  font-size: 0.975rem;
  color: rgba(247, 245, 242, 0.75);
}

.pourquoi__closing {
  margin-top: 5rem;
}

.pourquoi__closing p {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  line-height: 1.5;
  color: var(--blanc);
}

/* ─────────────── Contact ─────────────── */

.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 8vw, 8rem);
  align-items: start;
}

.contact__text {
  color: #55524e;
  margin-bottom: 3rem;
}

.contact__details p {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-top: 1px solid rgba(13, 13, 13, 0.1);
  font-size: 0.95rem;
}

.contact__details p:last-child { border-bottom: 1px solid rgba(13, 13, 13, 0.1); }

.contact__details span {
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--champagne);
  align-self: center;
}

.contact__details a {
  border-bottom: 1px solid transparent;
  transition: border-color 0.5s var(--ease-slow);
}

.contact__details a:hover { border-bottom-color: var(--champagne); }

.contact__form { display: grid; gap: 1.9rem; }

.field { display: grid; gap: 0.6rem; }

.field label {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--noir);
}

.field label small {
  text-transform: none;
  letter-spacing: 0.05em;
  color: var(--pierre);
}

.field input,
.field textarea {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 300;
  color: var(--noir);
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(13, 13, 13, 0.25);
  padding: 0.65rem 0;
  border-radius: 0;
  resize: vertical;
  transition: border-color 0.6s var(--ease-slow);
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--champagne);
}

.contact__submit {
  justify-self: start;
  font-family: var(--sans);
  font-size: 0.8125rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--blanc);
  background: var(--noir);
  border: 1px solid var(--noir);
  padding: 1.15rem 2.9rem;
  cursor: pointer;
  transition: background 0.7s var(--ease-slow), color 0.7s var(--ease-slow), border-color 0.7s var(--ease-slow);
}

.contact__submit:hover {
  background: var(--champagne);
  border-color: var(--champagne);
  color: var(--noir);
}

.contact__confirm {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--champagne);
}

/* ─────────────── Footer ─────────────── */

.footer {
  background: var(--noir);
  color: var(--blanc);
  padding: 5rem 0 3rem;
}

.footer__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 3rem;
  align-items: center;
}

.footer__logo {
  height: 110px;
  width: 110px;
  object-fit: cover;
  margin-bottom: 1.25rem;
}

.footer__baseline {
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--champagne);
}

.footer__nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2.2rem;
}

.footer__nav a {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(247, 245, 242, 0.7);
  transition: color 0.5s var(--ease-slow);
}

.footer__nav a:hover { color: var(--champagne); }

.footer__legal {
  text-align: right;
  font-size: 0.8rem;
  color: var(--pierre);
  line-height: 2;
}

/* ─────────────── Animations d'apparition ─────────────── */

.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 1.4s var(--ease-slow), transform 1.4s var(--ease-slow);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__image { animation: none; }
  .hero__scroll-line::after { animation: none; }
}

/* ─────────────── Responsive ─────────────── */

@media (max-width: 1024px) {
  .methode__layout { grid-template-columns: 1fr; }
  .methode__image { position: static; height: 420px; }
  .contact__layout { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  :root { --header-h: 76px; }

  .header__logo { height: 54px; width: 54px; }

  .header__toggle { display: block; }

  .header__nav {
    position: fixed;
    inset: 0;
    background: var(--noir);
    flex-direction: column;
    justify-content: center;
    gap: 2.4rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.7s var(--ease-slow), visibility 0.7s;
  }

  .header__nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .header__nav a { font-size: 1rem; }

  .piliers__grid { grid-template-columns: 1fr; gap: 3.5rem; }

  .services__grid { grid-template-columns: 1fr; }

  .service__image { height: 280px; }

  .pourquoi__item { grid-template-columns: 1fr; gap: 0.7rem; }

  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }

  .footer__legal { text-align: center; }
}