/* Structure : sidebar + topbar + contenu */
.app-shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }

.sidebar { background: var(--sidebar-bg); color: var(--sidebar-ink); padding: 18px 0; }
.sidebar .logo { color: #fff; font-family: var(--font-display); font-weight: 600; font-size: 1.35rem; padding: 0 20px 18px; }
.sidebar .logo span { color: var(--gold); font-style: italic; }
.sidebar nav a {
  display: flex; align-items: center; gap: 10px; padding: 10px 20px;
  color: var(--sidebar-ink); font-size: .87rem; border-left: 3px solid transparent;
}
.sidebar nav a:hover { color: #fff; text-decoration: none; }
.sidebar nav a.active { background: #2c2723; color: #fff; border-left-color: var(--gold); }
.sidebar .nav-sep { margin: 16px 20px 6px; font-size: .65rem; text-transform: uppercase; letter-spacing: 1px; color: #6b7385; }

.main { display: flex; flex-direction: column; }
.topbar {
  background: var(--card); border-bottom: 1px solid var(--line);
  padding: 12px 24px; display: flex; align-items: center; gap: 14px;
}
.topbar .spacer { flex: 1; }
.content { padding: 24px; max-width: 1280px; width: 100%; }

.page-head { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.page-head .spacer { flex: 1; }

/* Responsive : sidebar repliée en barre horizontale sur mobile */
@media (max-width: 820px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { display: flex; align-items: center; overflow-x: auto; padding: 10px 8px; }
  .sidebar .logo { padding: 0 12px; }
  .sidebar nav { display: flex; }
  .sidebar nav a { border-left: none; border-bottom: 3px solid transparent; white-space: nowrap; }
  .sidebar nav a.active { border-bottom-color: var(--gold); }
  .sidebar .nav-sep { display: none; }
}

/* Layout auth (pages de connexion) */
.auth-shell { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.auth-card {
  width: 100%; max-width: 400px; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); padding: 32px;
}
.auth-card .logo { text-align: center; font-family: var(--font-display); font-size: 1.9rem; font-weight: 600; margin-bottom: 6px; }
.auth-card .logo span { color: var(--accent); font-style: italic; }
.auth-card .subtitle { text-align: center; color: var(--ink-2); font-size: .82rem; margin-bottom: 24px; }