/* ─── Topbar + Sidebar Premium (Sprint 3.5) ─────────────────── */

/* Topbar escura com profundidade */
.topbar {
  background: #1a2940;
  box-shadow: var(--shadow-sm);
  gap: 20px;
}

/* Logo em caixa branca */
.topbar-logo-box {
  background: var(--white);
  border-radius: 8px;
  padding: 5px 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.topbar-logo-box img {
  height: 26px;
  display: block;
}

.topbar-subtitle {
  font-weight: 700;
  letter-spacing: 0.1em;
}

/* Avatar elegante com borda e gradiente */
.topbar .avatar {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), #1ba3c2);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
  font-size: 0.85rem;
}

.btn-logout {
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: var(--white);
  font-weight: 600;
}

.btn-logout:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
}

/* Sidebar com estados ricos */
.sidebar {
  background: var(--white);
  border-right: 1px solid var(--gray-light);
  box-shadow: var(--shadow-sm);
}

.sidebar .course-item {
  border-radius: 0 8px 8px 0;
  border-left: 3px solid transparent;
  color: var(--gray-dark);
  font-weight: 500;
  transition: all 0.2s;
}

.sidebar .course-item:hover {
  background: rgba(0, 142, 168, 0.06);
  color: var(--primary);
}

.sidebar .course-item.active {
  background: rgba(0, 142, 168, 0.08);
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 600;
}

.sidebar .course-item.active .ci-icon {
  color: var(--primary);
}