:root {
  --color-bg-main: #e3f2fd;
  --color-bg-hover: #bbdefb;
  --color-border: #90caf9;
  --color-text-main: #0d47a1;
  --color-submenu-bg: #fff;
  --color-submenu-border: #ccc;
  --color-submenu-shadow: rgba(0, 0, 0, 0.12);
  --color-submenu-hover-bg: #e0e0e0;
  --color-accessory-bg: #f0f0f0;
  --color-accessory-hover-bg: #dceeff;
  --color-accessory-hover-text: #004085;
}

.categories-title {
  background-color: #f4f4f4;
  padding: 10px 20px 10px 40px;
  color: #333;
  font-weight: 600;
  font-size: 1.2rem;
  user-select: none;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 18px;
  padding: 20px;
  background-color: #fafafa;
  position: relative;
}

.category-card {
  background-color: var(--color-bg-main);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-main);
  font-weight: 700;
  text-align: center;
  padding: 18px 12px;
  border-radius: 8px;
  transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.category-card:hover,
.category-card:focus-within {
  background-color: var(--color-bg-hover);
  transform: translateY(-4px);
  box-shadow: 0 6px 12px rgba(33, 150, 243, 0.3);
  outline: none;
}

.category-card.has-submenu::after {
  content: '▼';
  font-size: 0.65rem;
  color: var(--color-text-main);
  margin-left: 6px;
  transition: transform 0.3s ease;
  user-select: none;
}

.category-card.open.has-submenu::after {
  transform: rotate(180deg);
}

.submenu-container {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1000;
  background-color: var(--color-submenu-bg);
  border: 1px solid var(--color-submenu-border);
  padding: 12px;
  box-shadow: 0 6px 14px var(--color-submenu-shadow);
  width: max-content;
  white-space: normal;
  overflow-x: visible;
  max-width: 55vw; /* o menos si quieres límites */
  border-radius: 6px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.category-card.open .submenu-container {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.submenu-container a {
  display: inline-block;
  padding: 8px 14px;
  color: #111;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 500;
  transition: background-color 0.2s ease;
}

.submenu-container a:hover,
.submenu-container a:focus {
  background-color: var(--color-submenu-hover-bg);
  outline: none;
}

.accessories-submenu {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 100%;
}

.accessories-submenu a {
  background-color: var(--color-accessory-bg);
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  color: #333;
  font-size: 0.95rem;
  font-weight: 600;
  transition: background-color 0.3s ease, color 0.3s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.accessories-submenu a:hover,
.accessories-submenu a:focus {
  background-color: var(--color-accessory-hover-bg);
  color: var(--color-accessory-hover-text);
  outline: none;
  box-shadow: 0 4px 12px rgba(0, 64, 133, 0.3);
}