/* SLK Club — charte : beige #E1DFD9, noir, blanc / Young Serif + Bitter */
:root {
  --beige: #E1DFD9;
  --noir: #0d0d0d;
  --blanc: #ffffff;
  --gris: #55524c;
  --serif: "Young Serif", Georgia, serif;
  --sans: "Bitter", Georgia, serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--beige);
  color: var(--noir);
  line-height: 1.65;
  font-size: 1.0rem;
}

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
h3 { font-size: 1.25rem; }

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

a { color: inherit; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 1.25rem; }

/* ---------- Header ---------- */
header {
  background: var(--beige);
  border-bottom: 1px solid rgba(0,0,0,.12);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: .6rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; }
.brand img { height: 52px; width: 52px; object-fit: contain; }
.brand span { font-family: var(--serif); font-size: 1.15rem; }

nav ul { list-style: none; display: flex; gap: 1.4rem; flex-wrap: wrap; }
nav a {
  text-decoration: none;
  font-size: .95rem;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
nav a:hover, nav a[aria-current="page"] { border-bottom-color: var(--noir); }

#nav-toggle { display: none; }
.nav-burger { display: none; font-size: 1.6rem; cursor: pointer; user-select: none; }

@media (max-width: 860px) {
  .nav-burger { display: block; }
  nav { display: none; width: 100%; }
  #nav-toggle:checked ~ nav { display: block; }
  .header-inner { flex-wrap: wrap; }
  nav ul { flex-direction: column; gap: .3rem; padding: .5rem 0 1rem; }
  nav a { display: block; padding: .45rem 0; font-size: 1.05rem; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  color: var(--blanc);
  text-align: center;
  padding: clamp(4rem, 12vw, 9rem) 1.25rem;
  background: var(--noir);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image: var(--hero-img);
  background-size: cover;
  background-position: center;
  opacity: .45;
}
.hero > * { position: relative; }
.hero p { max-width: 640px; margin: 1rem auto 0; font-size: 1.1rem; }

/* ---------- Sections ---------- */
section { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
.section-dark { background: var(--noir); color: var(--blanc); }
.section-blanc { background: var(--blanc); }
.section-title { text-align: center; margin-bottom: 2rem; }
.section-title .kicker {
  display: block;
  font-family: var(--sans);
  font-size: .85rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gris);
  margin-bottom: .5rem;
}
.section-dark .kicker { color: rgba(255,255,255,.6); }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card {
  background: var(--blanc);
  border: 1px solid rgba(0,0,0,.1);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: .8rem;
}
.section-blanc .card { background: var(--beige); }
.card h3 { font-size: 1.2rem; }
.card ul { padding-left: 1.1rem; }
.card .cta { margin-top: auto; }

.list-check { list-style: none; padding: 0; }
.list-check li { padding: .35rem 0 .35rem 1.8rem; position: relative; }
.list-check li::before { content: "✔"; position: absolute; left: 0; }
.list-cross li::before { content: "✕"; }

/* ---------- Steps ---------- */
.steps { counter-reset: step; }
.step { position: relative; padding-left: 3.4rem; margin-bottom: 1.6rem; }
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 2.4rem; height: 2.4rem;
  border: 1px solid currentColor;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif);
  font-size: 1.1rem;
}

/* ---------- Buttons ---------- */
.cta {
  display: inline-block;
  background: var(--noir);
  color: var(--blanc);
  text-decoration: none;
  padding: .8rem 1.6rem;
  font-family: var(--sans);
  font-size: .95rem;
  letter-spacing: .03em;
  border: 1px solid var(--noir);
  transition: background .2s, color .2s;
}
.cta:hover { background: transparent; color: var(--noir); }
.section-dark .cta { background: var(--blanc); color: var(--noir); border-color: var(--blanc); }
.section-dark .cta:hover { background: transparent; color: var(--blanc); }
.cta-center { text-align: center; margin-top: 2rem; }

/* ---------- Coach ---------- */
.coach {
  display: grid;
  grid-template-columns: minmax(240px, 340px) 1fr;
  gap: 2.5rem;
  align-items: start;
  margin-bottom: 4rem;
}
.coach img { width: 100%; object-fit: cover; border: 1px solid rgba(0,0,0,.1); }
.coach h2 { margin-bottom: .2rem; }
.coach .role { font-size: 1.05rem; color: var(--gris); margin-bottom: 1rem; }
.coach p { margin-bottom: .9rem; }
.coach ul { padding-left: 1.2rem; margin-bottom: .9rem; }
@media (max-width: 720px) { .coach { grid-template-columns: 1fr; } }

/* ---------- FAQ ---------- */
.faq-item {
  background: var(--blanc);
  border: 1px solid rgba(0,0,0,.1);
  margin-bottom: .7rem;
}
.faq-item summary {
  cursor: pointer;
  padding: 1rem 1.25rem;
  font-family: var(--serif);
  font-size: 1.05rem;
  list-style: none;
  position: relative;
  padding-right: 2.5rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute; right: 1.25rem; top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
}
.faq-item[open] summary::after { content: "–"; }
.faq-item .answer { padding: 0 1.25rem 1.25rem; }

/* ---------- Formulaire ---------- */
form .field { margin-bottom: 1.1rem; }
form label { display: block; font-size: .9rem; margin-bottom: .3rem; }
form input, form textarea {
  width: 100%;
  padding: .75rem;
  border: 1px solid rgba(0,0,0,.25);
  background: var(--blanc);
  font-family: var(--sans);
  font-size: 1rem;
}
form textarea { min-height: 140px; resize: vertical; }
form button {
  background: var(--noir); color: var(--blanc);
  border: 1px solid var(--noir);
  padding: .8rem 2rem;
  font-family: var(--sans); font-size: .95rem;
  letter-spacing: .05em;
  cursor: pointer;
}
form button:hover { background: transparent; color: var(--noir); }

/* ---------- Footer ---------- */
footer {
  background: var(--noir);
  color: var(--blanc);
  padding: 3rem 0 2rem;
  font-size: .95rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}
footer h4 { margin-bottom: .7rem; font-size: 1.05rem; }
footer a { color: var(--blanc); }
footer ul { list-style: none; }
footer li { margin-bottom: .4rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.2);
  padding-top: 1.2rem;
  text-align: center;
  font-size: .85rem;
  color: rgba(255,255,255,.65);
}

/* ---------- Divers ---------- */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: center; }
@media (max-width: 780px) { .two-col { grid-template-columns: 1fr; } }
.img-frame img { width: 100%; height: 100%; object-fit: cover; border: 1px solid rgba(0,0,0,.1); }
.muted { color: var(--gris); }
.section-dark .muted { color: rgba(255,255,255,.7); }