/* custom.css - Tema Claro Educacional Versão 3.0 (Landing Page x Cockpit 3 Colunas) */

body {
  background-color: #f8fafc;
  color: #1e293b;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar refinada */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Cards e painéis */
.edu-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.edu-card:hover {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
}

/* Itens da Sidebar do Cockpit */
.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.875rem;
  border-radius: 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #475569;
  transition: all 0.15s ease-in-out;
  cursor: pointer;
}

.nav-item:hover {
  background-color: #f1f5f9;
  color: #1e293b;
}

.nav-item.active {
  background-color: #eff6ff;
  color: #1d4ed8;
  border-left: 3px solid #2563eb;
  padding-left: calc(0.875rem - 3px);
}

/* Alternativas interativas */
.alt-item {
  transition: all 0.18s ease-in-out;
  border: 1px solid #e2e8f0;
  background-color: #ffffff;
}

.alt-item:hover:not(.locked) {
  border-color: #3b82f6;
  background-color: #eff6ff;
  transform: translateY(-1px);
}

.alt-item.selected {
  border-color: #2563eb !important;
  background-color: #eff6ff !important;
  box-shadow: 0 0 0 1.5px #2563eb !important;
}

.alt-item.correct {
  border-color: #10b981 !important;
  background-color: #ecfdf5 !important;
  box-shadow: 0 0 0 1.5px #10b981 !important;
}

.alt-item.incorrect {
  border-color: #ef4444 !important;
  background-color: #fef2f2 !important;
  box-shadow: 0 0 0 1.5px #ef4444 !important;
}

/* Animações */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.2s ease-out forwards;
}

/* Gráfico circular de progresso */
.circle-progress {
  transition: stroke-dashoffset 0.8s ease-in-out;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
}