/* ============================================
   Materiais - PDFs e Apostilas
   EntroPlataforma
   ============================================ */

.materiais-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 90px 24px 40px;
}

/* ---- Header ---- */
.materiais-header {
  text-align: center;
  margin-bottom: 32px;
}

.materiais-header h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.materiais-header h1 i {
  color: var(--primary);
  font-size: 28px;
}

.materiais-header p {
  color: #64748b;
  font-size: 15px;
  margin-top: 6px;
}

/* ---- Filtros de categoria ---- */
.materiais-filtros {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 28px;
}

.categoria-btn {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid #e2e8f0;
  background: white;
  color: #475569;
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}

.categoria-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.categoria-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ---- Grid de materiais ---- */
.materiais-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

/* ---- Card de material ---- */
.material-card {
  background: white;
  border: 1px solid rgba(16, 185, 129, 0.12);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all 0.2s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.material-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.12);
  transform: translateY(-2px);
}

.material-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.material-icon i {
  font-size: 24px;
  color: #dc2626;
}

.material-info {
  flex: 1;
}

.material-categoria {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--green-50);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.material-titulo {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin: 0 0 6px;
  line-height: 1.3;
}

.material-descricao {
  font-size: 13px;
  color: #64748b;
  margin: 0 0 8px;
  line-height: 1.5;
}

.material-tamanho {
  font-size: 12px;
  color: #94a3b8;
}

/* ---- Botão download ---- */
.material-download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--primary) 0%, #059669 100%);
  color: white;
  border: none;
  border-radius: 12px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 3px 10px rgba(16, 185, 129, 0.25);
}

.material-download-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 14px rgba(16, 185, 129, 0.35);
}

.material-download-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.material-download-btn i {
  font-size: 16px;
}

/* Spin animation for loading */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spin {
  animation: spin 1s linear infinite;
}

/* ---- Loading / Vazio ---- */
.materiais-loading,
.materiais-vazio {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: #94a3b8;
}

.materiais-loading i,
.materiais-vazio i {
  font-size: 40px;
  margin-bottom: 12px;
  display: block;
}

.materiais-loading i {
  animation: spin 1.5s linear infinite;
  color: var(--primary);
}

.materiais-vazio p,
.materiais-loading p {
  font-size: 15px;
  margin: 0;
}

/* ---- Responsivo ---- */
@media (max-width: 768px) {
  .materiais-layout {
    padding: 80px 16px 32px;
  }

  .materiais-header h1 {
    font-size: 22px;
  }

  .materiais-grid {
    grid-template-columns: 1fr;
  }

  .material-card {
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .materiais-filtros {
    gap: 6px;
  }

  .categoria-btn {
    padding: 6px 12px;
    font-size: 12px;
  }
}