:root {
  --vert-fonce: #0f3d2e;
  --vert: #1f6f4a;
  --vert-clair: #e8f3ec;
  --or: #c9a227;
  --or-clair: #f4e9c7;
  --texte: #1e2924;
  --texte-clair: #5c6b64;
  --bordure: #dde5e0;
  --fond: #f6f8f6;
  --blanc: #ffffff;
  --danger: #b3261e;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--fond);
  color: var(--texte);
}

a { color: inherit; text-decoration: none; }

/* ---------- Auth (connexion / inscription) ---------- */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--vert-fonce), var(--vert));
  padding: 20px;
}

.auth-card {
  background: var(--blanc);
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: 0 20px 40px rgba(0,0,0,.25);
}

.auth-logo-img {
  display: block;
  margin: 0 auto 10px;
  width: 72px;
  height: 72px;
  object-fit: contain;
}

.auth-logo {
  text-align: center;
  margin-bottom: 8px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--vert-fonce);
}
.auth-logo span { color: var(--or); }

.auth-sub {
  text-align: center;
  color: var(--texte-clair);
  font-size: 14px;
  margin-bottom: 24px;
}

/* ---------- Layout général de l'app ---------- */
.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 230px;
  background: var(--vert-fonce);
  color: #fff;
  padding: 22px 0;
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .03em;
  padding: 0 22px 22px;
  border-bottom: 1px solid rgba(255,255,255,.12);
  margin-bottom: 14px;
}
.sidebar-logo img { width: 34px; height: 34px; object-fit: contain; flex-shrink: 0; }
.sidebar-logo span { color: #fff; flex: 1; }

#menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  padding: 4px 8px;
}

.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 22px;
  color: rgba(255,255,255,.82);
  font-size: 14.5px;
  border-left: 3px solid transparent;
}
.sidebar nav a:hover { background: rgba(255,255,255,.06); color: #fff; }
.sidebar nav a.active {
  background: rgba(255,255,255,.09);
  border-left-color: var(--or);
  color: #fff;
  font-weight: 600;
}

.sidebar-footer {
  margin-top: 24px;
  padding: 14px 22px 0;
  border-top: 1px solid rgba(255,255,255,.12);
}
.sidebar-user { font-size: 13px; color: rgba(255,255,255,.75); margin-bottom: 8px; }
.btn-logout {
  display: inline-block;
  font-size: 13px;
  color: var(--or-clair);
  border: 1px solid rgba(255,255,255,.25);
  padding: 6px 10px;
  border-radius: 6px;
}
.btn-logout:hover { background: rgba(255,255,255,.08); }

.main { flex: 1; padding: 26px 32px; max-width: 1200px; }

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}
.page-header h1 { margin: 0 0 4px; font-size: 24px; color: var(--vert-fonce); }
.page-header p { margin: 0; color: var(--texte-clair); font-size: 14px; }

/* ---------- Cartes / stats ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
  margin-bottom: 26px;
}
.stat-card {
  background: var(--blanc);
  border: 1px solid var(--bordure);
  border-radius: var(--radius);
  padding: 18px 20px;
  border-top: 3px solid var(--or);
}
.stat-card .label { font-size: 13px; color: var(--texte-clair); margin-bottom: 6px; }
.stat-card .value { font-size: 26px; font-weight: 700; color: var(--vert-fonce); }

.card {
  background: var(--blanc);
  border: 1px solid var(--bordure);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 22px;
}
.card h2 { margin-top: 0; font-size: 17px; color: var(--vert-fonce); }

/* ---------- Formulaires ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--texte); }

input[type=text], input[type=email], input[type=password], input[type=number], input[type=date],
select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--bordure);
  border-radius: 7px;
  font-size: 14px;
  font-family: inherit;
  background: var(--blanc);
  color: var(--texte);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--vert);
  box-shadow: 0 0 0 3px rgba(31,111,74,.12);
}
textarea { resize: vertical; min-height: 70px; }

.field { margin-bottom: 14px; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 7px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.btn-primary { background: var(--vert); color: #fff; }
.btn-primary:hover { background: var(--vert-fonce); }
.btn-gold { background: var(--or); color: var(--vert-fonce); }
.btn-gold:hover { filter: brightness(0.95); }
.btn-outline { background: transparent; border: 1px solid var(--bordure); color: var(--texte); }
.btn-outline:hover { background: var(--vert-clair); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid #f0c9c6; padding: 6px 10px; font-size: 13px; }
.btn-danger:hover { background: #fbeceb; }
.btn-sm { padding: 6px 10px; font-size: 13px; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead th {
  text-align: left;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--texte-clair);
  padding: 10px 12px;
  border-bottom: 2px solid var(--bordure);
}
tbody td { padding: 12px; border-bottom: 1px solid var(--bordure); vertical-align: middle; }
tbody tr:hover { background: var(--vert-clair); }
.actions-cell { display: flex; gap: 8px; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-vert { background: var(--vert-clair); color: var(--vert-fonce); }
.badge-or { background: var(--or-clair); color: #8a6d10; }
.badge-gris { background: #eef0ee; color: var(--texte-clair); }
.badge-rouge { background: #fbeceb; color: var(--danger); }

/* Coloration des lignes de facture/prestation selon le paiement */
tr.row-non_paye { background: #fdf1f0; }
tr.row-non_paye:hover { background: #fbe4e2; }
tr.row-avance { background: #fdf7e6; }
tr.row-avance:hover { background: #faeec7; }
tr.row-total { background: #eef7f1; }
tr.row-total:hover { background: var(--vert-clair); }
tr.row-non_paye td:first-child, tr.row-avance td:first-child, tr.row-total td:first-child {
  border-left: 3px solid transparent;
}
tr.row-non_paye td:first-child { border-left-color: var(--danger); }
tr.row-avance td:first-child { border-left-color: var(--or); }
tr.row-total td:first-child { border-left-color: var(--vert); }

/* ---------- Alerts / flash messages ---------- */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 18px;
}
.alert-success { background: #e8f3ec; color: var(--vert-fonce); border: 1px solid #bfe0cd; }
.alert-error { background: #fbeceb; color: var(--danger); border: 1px solid #f0c9c6; }

/* ---------- Modal (ajout / édition) ---------- */
.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(15,61,46,.45);
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-box h2 { margin-top: 0; color: var(--vert-fonce); }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--texte-clair); }

.toolbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }

/* ---------- Responsive (tablette / mobile) ---------- */
@media (max-width: 900px) {
  .main { padding: 20px; }
}

@media (max-width: 768px) {
  .app-shell { flex-direction: column; }

  .sidebar {
    width: 100%;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 40;
  }
  .sidebar-logo {
    padding: 14px 16px;
    margin-bottom: 0;
    border-bottom: none;
  }
  #menu-toggle { display: block; }

  #sidebar-nav {
    display: none;
    flex-direction: column;
    border-top: 1px solid rgba(255,255,255,.12);
  }
  #sidebar-nav.nav-open { display: flex; }

  .sidebar-footer {
    display: none;
    margin-top: 0;
    padding: 14px 16px;
  }
  .sidebar-footer.nav-open { display: block; }

  .main { padding: 16px; max-width: 100%; }

  .page-header { align-items: flex-start; }
  .page-header h1 { font-size: 20px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 14px; }
  .stat-card .value { font-size: 20px; }

  .card { padding: 16px; }

  table { font-size: 13px; }
  thead th, tbody td { padding: 8px; }
  .actions-cell { flex-wrap: wrap; gap: 6px; }

  .modal-box { padding: 18px; max-height: 95vh; }

  .auth-card { padding: 26px 20px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; align-items: stretch; }
  .page-header .btn { width: 100%; justify-content: center; }
}