/* === Base === */
html,
body {
  height: 100%;
  margin: 0;
  font-family: system-ui, sans-serif;
  background-color: #f8f9fa;
  overflow: hidden;
}

/* === Topbar === */
.topbar {
  width: 100%;
  background-color: #212529;
  color: white;
  border-bottom: none;
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  position: sticky;
  top: 0;
}

.topbar .navbar-brand,
.topbar .text-white {
  color: white !important;
}

/* === Layout Container === */
.layout-body {
  display: flex;
  height: calc(100vh - 56px);
  /* Subtract topbar height */
  overflow: hidden;
}

/* === Sidebar === */
.sidebar {
  width: 260px;
  background-color: #ffffff;
  border-right: 1px solid #dee2e6;
  overflow-y: auto;
  padding: 1rem;
  flex-shrink: 0;
}

/* Sidebar section heading (optional use) */
.sidebar-heading {
  font-size: 0.85rem;
  font-weight: 600;
  color: #495057;
  cursor: pointer;
  padding: 8px 12px;
  margin-top: 1rem;
  border-radius: 4px;
}

.sidebar-heading:hover {
  background-color: #e9ecef;
  color: #0d6efd;
}

/* === Sidebar Accordion === */
.accordion-item {
  background-color: transparent;
  border: 0;
}

.accordion-button {
  background-color: #f8f9fa;
  font-weight: 600;
  color: #0d6efd;
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
}

.accordion-button.collapsed {
  color: #495057;
  background-color: #f8f9fa;
}

.accordion-button:not(.collapsed) {
  background-color: #e9ecef;
  color: #0a58ca;
}

.accordion-button:focus {
  box-shadow: none;
  outline: none;
}

.accordion-button:hover {
  background-color: #f1f3f5;
}

.accordion-button i {
  color: #0d6efd;
  margin-right: 0.5rem;
}

/* === Sidebar Links === */
.nav-link {
  display: flex;
  align-items: center;
  color: #0d6efd;
  font-size: 0.9rem;
  padding: 8px 16px;
  text-decoration: none;
  transition: background-color 0.2s;
}

.nav-link i {
  margin-right: 8px;
  font-size: 1rem;
  color: #0d6efd;
}

.nav-link:hover,
.nav-link.active {
  background-color: #e9ecef;
  color: #0a58ca;
  border-radius: 4px;
}

/* === Main Content Area === */
.content-area {
  flex-grow: 1;
  padding: 2rem;
  overflow-y: auto;
  background-color: #f8f9fa;
}

/* === Scrollbars (Optional) === */
.content-area::-webkit-scrollbar {
  width: 8px;
}

.content-area::-webkit-scrollbar-thumb {
  background-color: #ced4da;
  border-radius: 4px;
}

.content-area::-webkit-scrollbar-thumb:hover {
  background-color: #adb5bd;
}

/* === Responsive (optional) === */
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }

  .layout-body {
    flex-direction: column;
  }

  .content-area {
    padding: 1rem;
  }
}