/* Bitterli Motors — feuille de style */
:root {
  --bg: #0a0a0b;
  --bg-2: #111113;
  --bg-3: #18181b;
  --line: rgba(255, 255, 255, 0.09);
  --line-2: rgba(255, 255, 255, 0.18);
  --text: #ecebe8;
  --muted: #9b9b9b;
  --silver: #c9c7c2;
  --accent: #b9b4aa;          /* gris champagne du logo */
  --navy: #1d2a4a;            /* bleu nuit des photos */
  --radius: 18px;
  --serif: "Playfair Display", Georgia, serif;
  --sans: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ease: cubic-bezier(.2, .7, .1, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
.wrap { width: min(1200px, 100% - 32px); margin-inline: auto; }

/* Typo */
h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.12; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: clamp(2rem, 4.4vw, 3.4rem); }
h2 em, h1 em { font-style: italic; color: var(--accent); }
.eyebrow {
  margin: 0 0 14px;
  font-size: .74rem;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Boutons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: .9rem; letter-spacing: .04em;
  border: 1px solid var(--line-2);
  transition: background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease), transform .35s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn--solid { background: var(--text); color: #0a0a0b; border-color: var(--text); }
.btn--solid:hover { background: #fff; }
.btn--ghost { background: transparent; }
.btn--ghost:hover { border-color: var(--text); background: rgba(255,255,255,.04); }

/* Barre d'infos */
.topbar {
  background: #000;
  border-bottom: 1px solid var(--line);
  font-family: var(--serif);
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-variant-numeric: lining-nums;
  color: var(--silver);
}
.topbar__inner { display: flex; justify-content: center; gap: 34px; padding: 9px 0; flex-wrap: wrap; }
.topbar__item { display: inline-flex; align-items: center; gap: 8px; transition: color .25s; }
.topbar__item:hover { color: #fff; }
.topbar svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.topbar svg .fill, .fab svg .fill { fill: currentColor; stroke: none; }

/* Navigation */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 10, 11, .72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.is-scrolled { border-bottom-color: var(--line); background: rgba(10, 10, 11, .9); }
.nav__inner { display: flex; align-items: center; gap: 28px; height: 72px; }
.nav__brand { white-space: nowrap; display: flex; align-items: center; gap: 12px; font-family: var(--serif); letter-spacing: .18em; text-transform: uppercase; font-size: .86rem; color: var(--silver); }
.nav__brand img { width: 40px; height: 40px; mix-blend-mode: screen; }
.nav__links { display: flex; gap: 30px; margin-left: auto; font-size: .88rem; }
.nav__links a { white-space: nowrap; position: relative; color: var(--muted); transition: color .25s; padding: 4px 0; }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: -2px; height: 1px; width: 100%; background: var(--text); transform: scaleX(0); transform-origin: right; transition: transform .35s var(--ease); }
.nav__links a:hover, .nav__links a.is-current { color: var(--text); }
.nav__links a:hover::after, .nav__links a.is-current::after { transform: scaleX(1); transform-origin: left; }
.nav__cta { padding: 10px 20px; }
.lang { display: flex; gap: 2px; padding: 3px; border: 1px solid var(--line); border-radius: 999px; font-family: var(--serif); font-size: .72rem; letter-spacing: .12em; }
.lang a { padding: 6px 9px; border-radius: 999px; color: var(--muted); transition: color .25s, background .25s; }
.lang a:hover { color: var(--text); }
.lang a.is-active { background: var(--text); color: #0a0a0b; }
.nav__burger { display: none; background: none; border: 0; width: 40px; height: 40px; position: relative; margin-left: auto; }
.nav__burger span { position: absolute; left: 9px; right: 9px; height: 1.5px; background: var(--text); transition: transform .3s var(--ease); }
.nav__burger span:first-child { top: 15px; }
.nav__burger span:last-child { top: 24px; }
.nav__burger[aria-expanded="true"] span:first-child { transform: translateY(4.5px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:last-child { transform: translateY(-4.5px) rotate(-45deg); }

/* Accueil */
.hero { padding: 28px 0 40px; }
.hero__frame {
  width: min(1200px, 100% - 32px);
  margin-inline: auto;
  border-radius: calc(var(--radius) + 6px);
  overflow: hidden;
  position: relative;
  box-shadow: 0 40px 120px -40px rgba(0,0,0,.9), 0 0 0 1px var(--line);
  background: #000;
}
.hero__img { width: 100%; height: auto; transform: scale(1.06); transition: transform 1.8s var(--ease); will-change: transform; }
.hero__frame.is-in .hero__img { transform: scale(1); }
.hero__text { text-align: center; padding-top: clamp(48px, 8vw, 96px); }
.hero__title {
  font-size: clamp(2.4rem, 6.6vw, 5.4rem);
  max-width: 14ch;
  margin-inline: auto;
  background: linear-gradient(100deg, #8d8a84 0%, #f4f2ee 35%, #a9a59d 55%, #f4f2ee 75%, #8d8a84 100%);
  background-size: 250% 100%;
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  animation: sheen 9s linear infinite;
}
@keyframes sheen { to { background-position: -250% 0; } }
.hero__lead { max-width: 560px; margin: 22px auto 0; color: var(--muted); font-size: 1.05rem; }
.hero__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 34px; }

/* Sections */
.section { padding: clamp(80px, 11vw, 140px) 0; }
.section__head { max-width: 760px; margin-bottom: 56px; }
.section__sub { color: var(--muted); margin: 18px 0 0; font-size: 1.02rem; }

/* Cartes services */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  --mx: 50%; --my: 50%;
  position: relative;
  padding: 38px 32px 34px;
  border-radius: var(--radius);
  background: radial-gradient(600px circle at var(--mx) var(--my), rgba(255,255,255,.07), transparent 40%), var(--bg-2);
  border: 1px solid var(--line);
  transition: transform .5s var(--ease), border-color .4s;
  transform-style: preserve-3d;
  display: flex; flex-direction: column;
}
.card:hover { border-color: var(--line-2); }
.card__num { position: absolute; top: 26px; right: 30px; font-family: var(--serif); font-size: .95rem; color: #4d4c49; }
.card__icon { width: 46px; height: 46px; fill: none; stroke: var(--accent); stroke-width: 1.3; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 30px; }
.card h3 { font-size: 1.75rem; margin-bottom: 14px; }
.card p { color: var(--muted); margin: 0 0 28px; flex: 1; }
.card__link { font-size: .88rem; letter-spacing: .04em; display: inline-flex; gap: 8px; color: var(--text); }
.card__link span { transition: transform .3s var(--ease); }
.card__link:hover span { transform: translateX(5px); }

/* Stock */
.section--stock { background: linear-gradient(180deg, var(--bg) 0%, #050506 100%); }
.stock {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #000;
}
.stock iframe { width: 100%; min-height: 600px; border: 0; display: block; }

/* Ventes 2026 */
.section--sold { border-top: 1px solid var(--line); }
.sold { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.sold__item {
  position: relative; padding: 0; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; background: #000; aspect-ratio: 4 / 3; text-align: left;
}
.sold__item img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease), filter .6s var(--ease); filter: saturate(.9) brightness(.9); }
.sold__item::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(0,0,0,.75)); pointer-events: none; }
.sold__item:hover img { transform: scale(1.05); filter: none; }
.sold__badge {
  position: absolute; top: 14px; left: 14px; z-index: 1;
  font-family: var(--serif); font-size: .68rem; letter-spacing: .2em; text-transform: uppercase;
  padding: 6px 12px; border-radius: 999px; background: rgba(10,10,11,.75); border: 1px solid var(--line-2);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); color: var(--silver);
}
.sold__caption { position: absolute; left: 20px; bottom: 16px; z-index: 1; font-family: var(--serif); font-size: 1.4rem; line-height: 1.15; color: #fff; }
.sold__caption small { display: block; font-family: var(--sans); font-size: .7rem; letter-spacing: .22em; text-transform: uppercase; color: var(--silver); margin-bottom: 2px; }

.lightbox { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.94); display: grid; place-items: center; padding: 24px; animation: fadeUp .35s var(--ease); }
.lightbox[hidden] { display: none; }
.lightbox figure { margin: 0; max-width: min(1200px, 100%); text-align: center; }
.lightbox img { max-height: 80vh; width: auto; margin: 0 auto; border-radius: 12px; }
.lightbox figcaption { margin-top: 14px; font-family: var(--serif); font-size: 1.2rem; color: var(--silver); }
.lightbox button { position: absolute; background: none; border: 1px solid var(--line-2); color: var(--text); width: 48px; height: 48px; border-radius: 50%; font-size: 1.6rem; line-height: 1; transition: background .25s; }
.lightbox button:hover { background: rgba(255,255,255,.08); }
.lightbox__close { top: 20px; right: 20px; }
.lightbox__prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lightbox__next { right: 20px; top: 50%; transform: translateY(-50%); }

/* Projet interactif */
.planner {
  max-width: 860px;
  margin-inline: auto;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  padding: clamp(22px, 4vw, 46px);
  position: relative;
  overflow: hidden;
}
.planner::before {
  content: ""; position: absolute; inset: -40% -20% auto auto; width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(42, 63, 120, .35), transparent 65%);
  pointer-events: none;
}
.planner__tabs { position: relative; display: grid; grid-template-columns: 1fr 1fr; background: #000; border: 1px solid var(--line); border-radius: 999px; padding: 5px; margin-bottom: 34px; }
.planner__tabs button { position: relative; z-index: 1; background: none; border: 0; padding: 12px 10px; border-radius: 999px; color: var(--muted); font-size: .92rem; transition: color .3s; }
.planner__tabs button.is-active { color: #0a0a0b; }
.planner__pill { position: absolute; top: 5px; bottom: 5px; left: 5px; width: calc(50% - 5px); background: var(--text); border-radius: 999px; transition: transform .5s var(--ease); }
.planner__tabs.is-sell .planner__pill { transform: translateX(100%); }

.planner__panel { display: none; position: relative; }
.planner__panel.is-active { display: block; animation: fadeUp .5s var(--ease); }
.progress { height: 2px; background: var(--line); border-radius: 2px; margin-bottom: 30px; overflow: hidden; }
.progress span { display: block; height: 100%; width: 25%; background: linear-gradient(90deg, var(--accent), #fff); transition: width .6s var(--ease); }

.step { border: 0; padding: 0; margin: 0; display: none; }
.step.is-active { display: block; animation: fadeUp .5s var(--ease); }
.step legend { font-family: var(--serif); font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 24px; padding: 0; }
.step legend span { font-family: var(--sans); font-size: .75rem; letter-spacing: .2em; color: var(--muted); display: block; margin-bottom: 8px; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.chips button {
  background: transparent; border: 1px solid var(--line-2); border-radius: 999px;
  padding: 11px 20px; font-size: .92rem; color: var(--silver);
  transition: all .3s var(--ease);
}
.chips button:hover { border-color: var(--text); color: var(--text); }
.chips button.is-on { background: var(--text); color: #0a0a0b; border-color: var(--text); transform: scale(1.04); }
.chips--small button { padding: 8px 15px; font-size: .84rem; }

.field { display: block; margin-bottom: 16px; }
.field span { display: block; font-size: .78rem; letter-spacing: .08em; color: var(--muted); margin-bottom: 8px; }
.field input, .field textarea {
  width: 100%; background: #000; border: 1px solid var(--line-2); border-radius: 12px;
  padding: 13px 16px; color: var(--text); font: inherit; font-size: 1rem; resize: vertical;
  transition: border-color .25s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }

.budget { margin-bottom: 24px; }
.budget output { display: block; font-family: var(--serif); font-size: clamp(2.2rem, 6vw, 3.4rem); margin-bottom: 14px; }
.budget input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 3px; background: linear-gradient(90deg, var(--text) var(--p, 18%), var(--line-2) var(--p, 18%)); border-radius: 3px; outline: none; }
.budget input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 26px; height: 26px; border-radius: 50%; background: var(--text); border: 6px solid #000; box-shadow: 0 0 0 1px var(--text); cursor: grab; }
.budget input[type=range]::-moz-range-thumb { width: 16px; height: 16px; border-radius: 50%; background: var(--text); border: 6px solid #000; box-shadow: 0 0 0 1px var(--text); cursor: grab; }
.budget__scale { display: flex; justify-content: space-between; font-size: .75rem; color: var(--muted); margin-top: 10px; }

.summary { display: none; }
.summary.is-active { display: block; animation: fadeUp .5s var(--ease); }
.summary h3 { font-size: 1.9rem; margin-bottom: 18px; }
.summary dl { display: grid; grid-template-columns: max-content 1fr; gap: 10px 22px; margin: 0 0 8px; padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: #000; }
.summary dt { color: var(--muted); font-size: .82rem; letter-spacing: .06em; padding-top: 2px; }
.summary dd { margin: 0; }
.summary p { color: var(--muted); font-size: .9rem; }

.planner__nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 30px; }
.planner__nav [data-prev] { visibility: hidden; }
.planner__nav [data-send] { display: none; }
.planner__panel.is-first .planner__nav [data-prev] { visibility: hidden; }
.planner__panel:not(.is-first) .planner__nav [data-prev] { visibility: visible; }
.planner__panel.is-done [data-next] { display: none; }
.planner__panel.is-done [data-send] { display: inline-flex; }
.btn--wa::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #25d366; box-shadow: 0 0 0 4px rgba(37,211,102,.2); }

/* Dépôt-vente */
.section--depot { background: radial-gradient(1000px 500px at 85% 0%, rgba(29, 42, 74, .45), transparent 60%), var(--bg); border-top: 1px solid var(--line); }
.timeline { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; position: relative; counter-reset: step; }
.timeline::before { content: ""; position: absolute; top: 9px; left: 10px; right: 10px; height: 1px; background: linear-gradient(90deg, var(--line-2), var(--line-2) 50%, transparent); }
.timeline li { position: relative; padding-top: 44px; counter-increment: step; }
.timeline__dot { position: absolute; top: 0; left: 0; width: 19px; height: 19px; border-radius: 50%; background: var(--bg); border: 1px solid var(--accent); }
.timeline__dot::after { content: ""; position: absolute; inset: 4px; border-radius: 50%; background: var(--accent); transform: scale(0); transition: transform .6s var(--ease) .3s; }
.timeline li.is-in .timeline__dot::after { transform: scale(1); }
.timeline h3 { font-size: 1.45rem; margin-bottom: 10px; }
.timeline h3::before { content: "0" counter(step) " "; font-family: var(--sans); font-size: .72rem; letter-spacing: .2em; color: var(--muted); display: block; margin-bottom: 8px; }
.timeline p { margin: 0; color: var(--muted); font-size: .95rem; }
.depot__cta { margin-top: 56px; }

/* Contact */
.contact { border-top: 1px solid var(--line); }
.contact__inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 6vw, 80px); align-items: stretch; }
.contact__text .eyebrow { margin-bottom: 30px; }
.contact__text .hero__actions { justify-content: flex-start; }
.contact__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.contact__list span { display: block; font-size: .72rem; letter-spacing: .24em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.contact__list a, .contact__list p { font-size: 1.05rem; margin: 0; transition: color .25s; }
.contact__list a:hover { color: var(--accent); }
.contact__map { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); min-height: 380px; }
.contact__map iframe { width: 100%; height: 100%; min-height: 380px; border: 0; filter: grayscale(1) invert(.92) contrast(.9); }

/* Pied de page */
.footer { border-top: 1px solid var(--line); padding: 56px 0 40px; background: #000; text-align: center; color: var(--muted); }
.footer img { width: 120px; height: auto; margin: 0 auto 8px; mix-blend-mode: screen; }
.footer p { margin: 6px 0; }
.footer__small { font-size: .78rem; color: #5d5c59; }

/* Bouton flottant WhatsApp */
.fab {
  position: fixed; right: 20px; bottom: 20px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--text); color: #0a0a0b;
  box-shadow: 0 14px 40px -10px rgba(0,0,0,.8);
  transform: translateY(120px); transition: transform .5s var(--ease);
}
.fab.is-visible { transform: none; }
.fab:hover { transform: scale(1.06); }
.fab svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linejoin: round; }

/* Apparition au défilement */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 980px) {
  .cards { grid-template-columns: 1fr; }
  .sold { grid-template-columns: 1fr 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; row-gap: 40px; }
  .timeline::before { display: none; }
  .contact__inner { grid-template-columns: 1fr; }
}
@media (max-width: 1100px) {
  .nav__links {
    position: fixed; inset: 0 0 auto 0; top: 0; height: 100dvh;
    flex-direction: column; align-items: center; justify-content: center; gap: 30px;
    background: rgba(5,5,6,.97); font-family: var(--serif); font-size: 1.8rem;
    opacity: 0; pointer-events: none; transition: opacity .4s var(--ease);
    margin: 0;
  }
  .nav__links.is-open { opacity: 1; pointer-events: auto; }
  .nav__links a { color: var(--text); }
  .nav__burger { display: block; z-index: 2; margin-left: 0; }
  .lang { margin-left: auto; }
  .nav__cta { display: none; }
  .topbar__inner { gap: 6px 20px; }
  .topbar__address span { font-size: .76rem; }
}
@media (max-width: 560px) {
  .hero__frame { border-radius: 14px; }
  .timeline { grid-template-columns: 1fr; }
  .sold { grid-template-columns: 1fr; }
  .lightbox__nav { top: auto !important; bottom: 20px; transform: none !important; }
  .grid2, .contact__list { grid-template-columns: 1fr; }
  .planner__tabs button { font-size: .8rem; padding: 11px 6px; }
  .planner__nav .btn { padding: 13px 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}