:root {
  --encre: #1c2b3d; --ardoise: #52606f; --trait: #d5dbe2; --fond: #eef1f4; --carte: #ffffff;
  --bleu: #1f5fa8; --bleu-fonce: #174a84; --rouge: #a3261b; --vert: #1d6b3a; --orange: #7a5200;
  --ombre: 0 1px 2px rgba(28, 43, 61, .06), 0 4px 16px rgba(28, 43, 61, .06);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--fond); color: var(--encre); font: 15.5px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--bleu); }
a:hover { color: var(--bleu-fonce); }
h1 { font-size: 1.75rem; margin: 0 0 .25rem; letter-spacing: -.01em; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }
.muted { color: var(--ardoise); }
.petit { font-size: .85rem; }
:focus-visible { outline: 3px solid var(--bleu); outline-offset: 2px; }

/* ---------- Espace connecté ---------- */
.app-grille { display: grid; grid-template-columns: 15.5rem minmax(0, 1fr); min-height: 100vh; }
.app-nav { position: sticky; top: 0; height: 100vh; overflow-y: auto; background: var(--encre); color: #d7dfe8; padding: 1.5rem 1rem; }
.app-marque { padding: 0 .6rem 1.1rem; margin-bottom: .8rem; border-bottom: 1px solid rgba(255, 255, 255, .14); }
.app-marque strong { display: block; color: #fff; font-size: 1.1rem; }
.app-marque span { font-size: .85rem; color: #aebbc9; }
.app-nav nav { display: flex; flex-direction: column; gap: .1rem; }
.app-nav nav a, .app-nav .bientot { display: block; padding: .5rem .6rem; border-radius: 6px; color: #e6ecf2; text-decoration: none; font-size: .93rem; }
.app-nav nav a:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.app-nav nav a.actif { background: rgba(255, 255, 255, .14); color: #fff; font-weight: 600; box-shadow: inset 3px 0 0 #5b9be0; }
.app-nav .bientot { color: #8fa0b3; cursor: default; }
.app-nav .bientot small { font-size: .7rem; border: 1px solid #5d6f83; border-radius: 999px; padding: 0 .4rem; margin-left: .2rem; }
.nav-sep { height: 1px; background: rgba(255, 255, 255, .14); margin: .8rem .6rem; }
.app-contenu { padding: 2rem clamp(1rem, 3vw, 3rem) 4rem; max-width: 90rem; width: 100%; display: flex; flex-direction: column; gap: 1.25rem; }
.entete { display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; flex-wrap: wrap; }
.sous-titre { margin: 0; color: var(--ardoise); }
.fil { margin: 0; font-size: .9rem; color: var(--ardoise); }

.carte { background: var(--carte); border-radius: 12px; box-shadow: var(--ombre); padding: 1.4rem 1.6rem; }
.carte.sans-marge { padding: .4rem 1.2rem; overflow-x: auto; }
.carte.vide { text-align: left; }
.carte.vide p { color: var(--ardoise); max-width: 46rem; }
.grille-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.kpi { display: flex; flex-direction: column; gap: .2rem; }
.kpi span { color: var(--ardoise); font-size: .9rem; font-weight: 500; }
.kpi strong { font-size: 1.7rem; letter-spacing: -.02em; }
.kpi small { color: var(--ardoise); font-size: .82rem; }
.liste-simple { margin: 0; padding-left: 1.1rem; }
.liste-simple li { margin: .35rem 0; }

.tableau { width: 100%; border-collapse: collapse; }
.tableau th { text-align: left; font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; color: var(--ardoise); padding: .7rem .6rem; border-bottom: 2px solid var(--trait); }
.tableau td { padding: .75rem .6rem; border-bottom: 1px solid #e6eaef; vertical-align: top; }
.tableau tr:last-child td { border-bottom: 0; }
.tableau .num { text-align: right; white-space: nowrap; }

.badge { display: inline-block; padding: .12rem .6rem; border-radius: 999px; font-size: .8rem; font-weight: 600; white-space: nowrap; }
.badge-vert { background: #e3f2e8; color: var(--vert); }
.badge-orange { background: #fdf1d8; color: var(--orange); }
.badge-rouge { background: #fbeceb; color: var(--rouge); }
.badge-bleu { background: #e3edf9; color: var(--bleu-fonce); }
.badge-gris { background: #eceff2; color: #3f4b58; }

/* ---------- Formulaires ---------- */
.formulaire { display: flex; flex-direction: column; gap: .9rem; }
.formulaire label { display: flex; flex-direction: column; gap: .3rem; font-size: .9rem; font-weight: 600; }
.formulaire label small { font-weight: 400; color: var(--ardoise); }
.formulaire input[type=text], .formulaire input[type=email], .formulaire input[type=password], .formulaire input[type=search],
.formulaire input[type=date], .formulaire select, .formulaire textarea, .filtres input, .filtres select {
  font: inherit; font-weight: 400; padding: .6rem .75rem; border: 1px solid var(--trait); border-radius: 8px; background: #fff; color: var(--encre); width: 100%;
}
.formulaire input:disabled { background: var(--fond); color: var(--ardoise); }
.formulaire textarea { resize: vertical; }
.formulaire .case { flex-direction: row; align-items: flex-start; gap: .55rem; font-weight: 400; }
.formulaire .case input { margin-top: .3rem; }
.deux-colonnes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .9rem; }
.grille-formulaire { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; align-items: start; }
.grille-formulaire .carte { display: flex; flex-direction: column; gap: .9rem; }
.grille-formulaire .carte h2 { margin: 0; }
.pleine-largeur { grid-column: 1 / -1; }
.formulaire-carte { max-width: 52rem; }
.actions { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }
.filtres { display: flex; gap: .8rem; align-items: flex-end; flex-wrap: wrap; }
.filtres label { display: flex; flex-direction: column; gap: .3rem; font-size: .85rem; font-weight: 600; color: var(--ardoise); }
.filtres input[type=search] { width: 20rem; }
.piege { position: absolute; left: -9999px; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 1.1rem; border-radius: 8px; border: 1px solid var(--bleu);
  background: #fff; color: var(--bleu); font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; }
.btn:hover { background: #eaf1fa; }
.btn-plein { background: var(--bleu); color: #fff; }
.btn-plein:hover { background: var(--bleu-fonce); color: #fff; }
.btn-danger { border-color: #e3b9b5; color: var(--rouge); }
.btn-danger:hover { background: #fbeceb; }
.zone-danger { margin-top: .5rem; }

.alerte { border-radius: 8px; padding: .8rem 1rem; }
.alerte p { margin: .15rem 0; }
.alerte-erreur { background: #fbeceb; color: var(--rouge); }
.alerte-ok { background: #e3f2e8; color: var(--vert); }
.alerte-info { background: #e3edf9; color: var(--bleu-fonce); }

.toast { position: fixed; right: 1.5rem; bottom: 1.5rem; z-index: 50; max-width: min(34rem, calc(100vw - 3rem)); display: flex; gap: 1rem;
  padding: .9rem 1.1rem; border-radius: 8px; box-shadow: 0 10px 30px rgba(28, 43, 61, .25); cursor: pointer; }
.toast p { margin: 0; }
.toast-ok { background: #e3f2e8; color: var(--vert); animation: disparait .4s ease 7s forwards; }
.toast-erreur { background: #fbeceb; color: var(--rouge); }
@keyframes disparait { to { opacity: 0; visibility: hidden; } }

/* ---------- Pages publiques (connexion…) ---------- */
.public-cadre { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 2rem 1rem; gap: 1.25rem; }
.public-marque { font-size: 1.5rem; font-weight: 700; color: var(--encre); }
.public-carte { width: 100%; max-width: 30rem; }
.public-carte h1 { font-size: 1.4rem; margin-bottom: 1rem; }
.public-carte .btn-plein { width: 100%; margin-top: .3rem; }
.intro { color: var(--ardoise); margin-top: 0; }
.liens-bas { margin: 1rem 0 0; font-size: .9rem; text-align: center; }
.public-pied { color: var(--ardoise); font-size: .85rem; margin: 0; }

/* ---------- Petits écrans ---------- */
@media (max-width: 1000px) {
  .grille-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grille-formulaire { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 800px) {
  .app-grille { grid-template-columns: minmax(0, 1fr); }
  .app-nav { position: sticky; top: 0; z-index: 5; height: auto; padding: .7rem 1rem; }
  .app-marque { border: 0; margin: 0; padding: 0 0 .4rem; }
  .app-nav nav { flex-direction: row; overflow-x: auto; white-space: nowrap; }
  .app-nav .bientot, .nav-sep { display: none; }
  .deux-colonnes { grid-template-columns: minmax(0, 1fr); }
  .filtres input[type=search] { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { .toast-ok { animation-duration: .01s; } }

/* ---------- Lot 2 : locataires et baux ---------- */
.colonne { display: flex; flex-direction: column; gap: 1.25rem; }
.ligne-element { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .7rem 0; border-bottom: 1px solid #eef1f4; }
.ligne-element:last-of-type { border-bottom: 0; }
.btn-petit { min-height: 36px; padding: 0 .8rem; font-size: .85rem; }
details.ajout { margin-top: .5rem; border-top: 1px solid #eef1f4; padding-top: .8rem; }
details.ajout summary { cursor: pointer; font-weight: 600; color: var(--bleu); margin-bottom: .8rem; }
fieldset.cases { border: 1px solid var(--trait); border-radius: 8px; padding: .8rem 1rem; margin: 0; display: flex; flex-direction: column; gap: .5rem; }
fieldset.cases legend { font-size: .9rem; font-weight: 600; padding: 0 .3rem; }
fieldset.cases legend small { font-weight: 400; color: var(--ardoise); }
.trois-colonnes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem; }
.onglets { display: flex; gap: .4rem; flex-wrap: wrap; }
.onglets a { padding: .45rem .9rem; border-radius: 999px; border: 1px solid var(--trait); background: #fff; color: var(--encre); text-decoration: none; font-weight: 600; font-size: .9rem; }
.onglets a.actif { background: var(--bleu); border-color: var(--bleu); color: #fff; }
@media (max-width: 800px) { .trois-colonnes { grid-template-columns: minmax(0, 1fr); } }