/* Layout : barre latérale blanche fixe + carrousel plein écran vertical ; ≤ 980 px : barre du haut + burger */
:root {
  --paper: #ffffff;
  --ink: #000000;
  --text: #4f4f4f;
  --text-soft: #6e6e6e;
  --line: #9a9a9a;
  --font: "Quicksand", "Avenir Next", "Century Gothic", system-ui, sans-serif;
  --w-light: 300;
  --w-bold: 600;
  --sidebar-w: 320px;
  --topbar-h: 76px;
  --ease: cubic-bezier(.77, 0, .18, 1);
  --speed: 900ms;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font);
  font-weight: var(--w-light);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 1px solid var(--ink); outline-offset: 4px; }
ul { list-style: none; margin: 0; padding: 0; }

.site { position: relative; height: 100%; display: flex; }

/* ---------- Barre latérale ---------- */
.sidebar {
  flex: 0 0 var(--sidebar-w);
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 42px 24px 60px 62px;
  padding-left: max(62px, env(safe-area-inset-left, 0px));
  background: var(--paper);
  z-index: 20;
}
.sidebar__logo { display: block; width: 140px; margin-left: -10px; }
.sidebar__logo .logo, .topbar__logo .logo { display: block; width: 100%; height: auto; aspect-ratio: 1; }

.menu { margin-top: 84px; display: flex; flex-direction: column; gap: 34px; }
.menu a {
  position: relative;
  display: block;
  font-size: 14px;
  line-height: 1.8;
  letter-spacing: .19em;
  text-transform: uppercase;
  color: var(--text-soft);
  transition: color .2s;
}
.menu a:hover { color: var(--ink); }
.menu a.is-current { font-weight: var(--w-bold); color: var(--text); }
.menu a.is-current:hover { color: var(--ink); }
.menu a.is-current::before {
  content: "";
  position: absolute;
  left: -22px;
  top: .62em;
  border-style: solid;
  border-width: 5px 0 5px 6px;
  border-color: transparent transparent transparent currentColor;
}

.coords {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: .12em;
  color: var(--text-soft);
}
.coords__name { text-transform: uppercase; letter-spacing: .16em; }
.coords p { margin: 0; }
.coords address { font-style: normal; }
.coords a:hover, .slide__text a:hover { text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }

/* ---------- Barre du haut (mobile) ---------- */
.topbar { display: none; }
.burger {
  width: 44px; height: 44px;
  margin-right: -10px;
  border: 0; padding: 0;
  background: none;
  cursor: pointer;
  position: relative;
  color: var(--text);
}
.burger span {
  position: absolute; left: 10px; right: 10px;
  height: 1px; background: currentColor;
  transition: transform .35s var(--ease), opacity .2s;
}
.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 21px; }
.burger span:nth-child(3) { top: 27px; }
.menu-open .burger span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-open .burger span:nth-child(2) { opacity: 0; }
.menu-open .burger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Pages & carrousel ---------- */
.stage { position: relative; flex: 1 1 auto; min-width: 0; height: 100%; overflow: hidden; }
.page { position: absolute; inset: 0; }
.track {
  display: flex;
  height: 100%;
  transition: transform var(--speed) var(--ease);
  will-change: transform;
}
.slide { position: relative; flex: 0 0 100%; width: 100%; height: 100%; overflow: hidden; }
.slide__media {
  position: absolute; inset: 0;
  background-color: var(--ph-a, #e9e7e2);
  background-image: var(--img, none);
  background-size: cover;
  background-position: center;
}
/* Images provisoires : déposer les photos dans images/ puis, sur chaque .slide__media,
   style="--img: url(images/nom-photo.jpg)" et retirer la classe .ph */
.ph { background-image: linear-gradient(var(--ph-angle, 160deg), var(--ph-a), var(--ph-b)); }
.ph--carton  { --ph-a: #e8e1d4; --ph-b: #cdbfa6; }
.ph--bois    { --ph-a: #ece4d6; --ph-b: #d6c3a4; --ph-angle: 200deg; }
.ph--plexi   { --ph-a: #eef0f0; --ph-b: #d3d9da; }
.ph--beton   { --ph-a: #e6e5e2; --ph-b: #c9c7c2; --ph-angle: 120deg; }
.ph--machine { --ph-a: #ebe8e1; --ph-b: #cfcabe; --ph-angle: 175deg; }
.ph__label {
  position: absolute; right: 28px; bottom: 26px;
  font-size: 11px; letter-spacing: .18em; text-transform: uppercase;
  color: rgba(0,0,0,.35);
}

.slide__text {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(47%, 46rem);
  color: var(--text);
}
.slide__text h1, .slide__text h2 {
  margin: 0 0 38px;
  font-weight: var(--w-bold);
  font-size: 19px;
  letter-spacing: .2em;
  text-transform: uppercase;
  text-wrap: balance;
}
.slide__text p {
  margin: 0;
  font-size: 18px;
  line-height: 1.78;
  letter-spacing: .06em;
  text-align: justify;
  hyphens: auto;
}
.slide__text p + p { margin-top: 1.1em; }
.slide__text .slide__cta { margin-top: 3.2em; font-weight: var(--w-bold); text-align: left; }

/* Points de navigation */
.dots {
  position: absolute;
  left: 78px; bottom: 54px;
  display: flex; gap: 12px;
  z-index: 5;
}
.dots button {
  width: 24px; height: 24px;
  padding: 0; border: 0; background: none;
  cursor: pointer;
  position: relative;
  color: var(--text);
}
.dots button::before {
  content: ""; position: absolute; left: 50%; top: 50%;
  width: 6px; height: 6px; margin: -3px 0 0 -3px;
  border-radius: 50%; background: currentColor;
}
.dots button::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  width: 16px; height: 16px; margin: -8px 0 0 -8px;
  border-radius: 50%; border: 1px solid currentColor;
  transform: scale(0); opacity: 0;
  transition: transform .35s var(--ease), opacity .35s;
}
.dots button[aria-current="true"]::after { transform: scale(1); opacity: 1; }
.dots button:hover { color: var(--ink); }

/* ---------- Responsive ≤ 980 px ---------- */
@media (max-width: 980px) {
  .site { flex-direction: column; }
  .topbar {
    display: flex; align-items: center; justify-content: space-between;
    flex: 0 0 var(--topbar-h);
    padding-left: max(20px, env(safe-area-inset-left, 0px));
    padding-right: max(20px, env(safe-area-inset-right, 0px));
    background: var(--paper);
    z-index: 30;
  }
  .topbar__logo { display: block; width: 58px; }

  .sidebar {
    position: absolute;
    top: var(--topbar-h); left: 0; right: 0; bottom: 0;
    height: auto;
    padding: 40px max(32px, env(safe-area-inset-right, 0px)) 40px max(32px, env(safe-area-inset-left, 0px));
    opacity: 0; visibility: hidden;
    transform: translateY(-12px);
    transition: opacity .3s, transform .4s var(--ease), visibility 0s .4s;
    overflow-y: auto;
  }
  .menu-open .sidebar {
    opacity: 1; visibility: visible; transform: none;
    transition: opacity .3s, transform .4s var(--ease), visibility 0s;
  }
  .sidebar__logo { display: none; }
  .menu { margin-top: 0; gap: 28px; }
  .menu a { font-size: 15px; }
  .menu a.is-current::before { left: -18px; }
  .coords { padding-top: 40px; }

  .stage { flex: 1 1 auto; height: auto; }
  .slide__text {
    width: calc(100% - 2 * max(28px, env(safe-area-inset-left, 0px), env(safe-area-inset-right, 0px)));
    max-width: 40rem;
  }
  .slide__text h1, .slide__text h2 { margin-bottom: 24px; font-size: 17px; }
  .slide__text p { font-size: 16px; line-height: 1.7; letter-spacing: .04em; }
  .dots { left: max(20px, env(safe-area-inset-left, 0px)); bottom: 28px; }
  .ph__label { right: 20px; bottom: 32px; }
}
@media (max-width: 480px) {
  .slide__text p { font-size: 15px; }
  .slide__text .slide__cta { margin-top: 2em; }
}
@media (prefers-reduced-motion: reduce) {
  :root { --speed: 0ms; }
  .sidebar, .burger span, .dots button::after { transition: none !important; }
}