/* =============================================
   HUB SERENA — feuille de style
   ============================================= */
:root {
  --vert: #31423F;
  --vert-clair: #5A7A5F;
  --or: #C9A96E;
  --or-clair: #E4D3A8;
  --creme: #FBF7F0;
  --creme-2: #F1EADB;
  --encre: #2B2B2B;
  --muet: #6B6B6B;
  --rouge: #A04040;
  --ombre: 0 2px 8px rgba(49,66,63,.08);
  --ombre-fort: 0 8px 32px rgba(49,66,63,.16);
  --rayon: 10px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--encre);
  background: var(--creme);
  min-height: 100vh;
}
h1, h2, h3, .serif { font-family: "Cormorant Garamond", Georgia, serif; font-weight: 500; }
a { color: var(--vert); }

/* ===== Bandeau ===== */
.bandeau {
  background: var(--vert);
  color: #fff;
  padding: 1.4rem 1.2rem;
  text-align: center;
}
.bandeau .logo {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.7rem;
  letter-spacing: .3em;
  color: var(--or);
  font-weight: 500;
}
.bandeau .sous {
  font-size: .8rem;
  letter-spacing: .2em;
  color: var(--or-clair);
  text-transform: uppercase;
  margin-top: .3rem;
}
.filet-or { height: 3px; background: var(--or); }

/* ===== Layout ===== */
.contenu {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.4rem 4rem;
}

/* ===== Nav top ===== */
.nav-haut {
  display: flex;
  justify-content: flex-end;
  padding: .6rem 1.2rem;
  background: rgba(49,66,63,.94);
  color: #fff;
  font-size: .85rem;
}
.nav-haut a {
  color: var(--or-clair);
  text-decoration: none;
  margin-left: 1rem;
}
.nav-haut a:hover { color: #fff; }

/* ===== Titres ===== */
h1 {
  font-size: 2.4rem;
  line-height: 1.15;
  color: var(--vert);
  margin: 0 0 .5rem;
  text-align: center;
}
.sous-titre {
  text-align: center;
  color: var(--muet);
  font-size: 1.05rem;
  margin: 0 0 2.5rem;
}

/* ===== Cartes ===== */
.grille {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.tuile {
  background: #fff;
  border-radius: var(--rayon);
  overflow: hidden;
  box-shadow: var(--ombre);
  transition: transform .2s, box-shadow .2s;
  display: flex;
  flex-direction: column;
}
.tuile:hover {
  transform: translateY(-3px);
  box-shadow: var(--ombre-fort);
}
.tuile-tete {
  background: var(--vert);
  color: #fff;
  padding: 1rem 1.2rem;
  border-bottom: 3px solid var(--or);
}
.tuile-tete .nom {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.4rem;
  color: var(--or);
  margin: 0;
}
.tuile-tete .url {
  font-size: .8rem;
  color: var(--or-clair);
  margin-top: .15rem;
  letter-spacing: .05em;
}
.tuile-corps {
  padding: 1rem 1.2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.tuile-corps p {
  color: var(--muet);
  margin: 0 0 1rem;
  font-size: .92rem;
  line-height: 1.5;
  flex: 1;
}
.actions {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: .55rem 1rem;
  font-size: .88rem;
  background: var(--vert);
  color: #fff;
  border: none;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: all .18s;
  font-weight: 500;
}
.btn:hover { background: #253432; }
.btn.or { background: var(--or); color: var(--vert); font-weight: 600; }
.btn.or:hover { background: #B89858; }
.btn.clair {
  background: transparent;
  color: var(--vert);
  border: 1.5px solid var(--vert);
}
.btn.clair:hover { background: var(--vert); color: #fff; }

/* Badge type */
.badge {
  display: inline-block;
  font-size: .7rem;
  padding: .15rem .5rem;
  background: rgba(201,169,110,.2);
  color: var(--or);
  border-radius: 10px;
  margin-left: .4rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  font-weight: 600;
}

/* ===== Login box ===== */
.login-box {
  max-width: 380px;
  margin: 4rem auto;
  padding: 2rem;
  background: #fff;
  border-radius: var(--rayon);
  box-shadow: var(--ombre-fort);
  border-top: 4px solid var(--or);
}
.login-box h1 {
  font-size: 1.5rem;
  margin: 0 0 1.5rem;
  text-align: center;
}
.champ { margin-bottom: 1rem; }
.champ label {
  display: block;
  font-size: .8rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--vert);
  font-weight: 600;
  margin-bottom: .4rem;
}
.champ input {
  width: 100%;
  padding: .7rem .9rem;
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  border: 1px solid var(--creme-2);
  border-radius: 8px;
  color: var(--encre);
}
.champ input:focus {
  outline: none;
  border-color: var(--or);
  box-shadow: 0 0 0 3px rgba(201,169,110,.18);
}
.err {
  background: #FDECEC;
  color: var(--rouge);
  padding: .7rem 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  border-left: 3px solid var(--rouge);
}

/* Footer */
.pied {
  text-align: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--creme-2);
  color: var(--muet);
  font-size: .82rem;
}

@media (max-width: 560px) {
  h1 { font-size: 1.9rem; }
  .grille { grid-template-columns: 1fr; }
}