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

.sidebar {
  width: 260px;
  flex: 0 0 260px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.app-main {
  flex: 1;
  min-width: 0;
}

/* Auth card */
.auth-card {
  width: 100%;
  max-width: 420px;
  border-radius: 16px;
}

/* Responsive sidebar (mobile) */
@media (max-width: 991.98px) {
  .sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    z-index: 1045;
    transition: left .2s ease-in-out;
    box-shadow: 0 10px 30px rgba(0,0,0,.15);
  }

  .sidebar.open {
    left: 0;
  }
}