.is-hidden {
  display: none;
}
.w-80 {
  width: 80px;
}
.w-120 {
  width: 120px;
}

.w-180 {
  width: 180px;
}

.w-200 {
  width: 200px;
}

.w-300 {
  width: 300px;
}

.gray {
  color: #666;
}

.none-data {
  text-align:center;
  padding:20px;
}

.layout-content {
  display: flex;
  margin: 0 auto 40px auto;
  padding: 0 20px;
  gap: 40px;
  min-height: 600px;
  max-width: 1500px;
}

.left-navigation {
  flex: 0 0 280px;
  flex-shrink: 0;
  align-self: flex-start;
  margin-top: 20px;
}

#content {
  min-width: 0;
  flex: 1 1 0;
}

.left-nav-menu {
  list-style: none;
  padding: 16px 12px;
  background: #f8fafc;
  border-radius: 12px;
  border: 1px solid #e5e7eb;
}

.left-nav-title {
  font-size: 16px;
  font-weight: 700;
  color: #111827;
  padding: 0 12px 8px;
  margin-bottom: 8px;
}

.left-nav-menu li {
  margin-bottom: 4px;
}

.left-nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 5px;
  text-decoration: none;
  color: #4b5563;
  font-size: 14px;
  font-weight: 500;
}

.left-nav-icon {
  font-size: 16px;
}

.left-nav-link:hover {
  background-color: #e5edff;
  color: #1d2d6e;
  text-decoration: none;
}

.left-nav-link.is-active {
  background-color: #e5edff;
  color: #1d2d6e;
  font-weight: 600;
}

.left-nav-link.is-active .left-nav-icon {
  color: #ffffff;
}

.left-nav-group {
  margin-top: 8px;
}

.left-nav-group-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 18px;
  font-weight: 600;
  color: #374151;
  cursor: pointer;
  border-radius: 999px;
  user-select: none;
}

.left-nav-group-label .toggle-arrow {
  margin-left: auto;
  transition: transform 0.25s ease;
}

.left-nav-group-label.active .toggle-arrow {
  transform: rotate(180deg);
}

.left-nav-sub {
  list-style: none;
  margin: 4px 0 0 0;
  padding-left: 15px;
  display: none;
}

.left-nav-sub.show {
  display: block;
}

.left-nav-sub .left-nav-link {
  padding: 6px 12px;
  font-size: 16px;
  letter-spacing: -0.7px;
}

@media (max-width: 992px) {
  .layout-content {
    flex-direction: column;
    gap: 16px;
    padding: 0 16px;
  }

  .left-navigation {
    display: none;
  }

  #content {
    width: 100%;
    flex: none;
  }
}