body {
  font-family: var(--nf-font);
  font-size: var(--nf-text-base);
  color: var(--nf-text);
  background: var(--nf-bg);
}

/* App shell */
.nf-app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar — dark slate on light theme */
.nf-sidebar {
  width: var(--nf-sidebar-width);
  min-width: var(--nf-sidebar-width);
  background: var(--nf-sidebar-bg);
  border-right: 1px solid rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.nf-sidebar__header {
  padding: var(--nf-space-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nf-sidebar__title {
  font-size: var(--nf-text-lg);
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.5px;
}

.nf-sidebar__nav {
  flex: 1;
  padding: var(--nf-space-sm) 0;
}

.nf-nav-item {
  display: flex;
  align-items: center;
  gap: var(--nf-space-sm);
  padding: var(--nf-space-sm) var(--nf-space-md);
  color: var(--nf-sidebar-text);
  font-size: var(--nf-text-sm);
  cursor: pointer;
  transition: background var(--nf-transition), color var(--nf-transition);
  border-left: 3px solid transparent;
}

.nf-nav-item:hover {
  background: var(--nf-sidebar-hover);
  color: #E0E4EA;
}

.nf-nav-item--active {
  background: var(--nf-sidebar-active);
  color: #FFFFFF;
  border-left-color: var(--nf-accent);
  font-weight: 600;
}

.nf-nav-item__badge {
  margin-left: auto;
  background: var(--nf-accent);
  color: #FFFFFF;
  font-size: var(--nf-text-xs);
  padding: 1px 6px;
  border-radius: var(--nf-radius-full);
  font-weight: 700;
}

/* Main area */
.nf-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header */
.nf-header {
  height: var(--nf-header-height);
  min-height: var(--nf-header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--nf-space-lg);
  background: var(--nf-bg-elevated);
  border-bottom: 1px solid var(--nf-border);
  box-shadow: var(--nf-shadow-sm);
  z-index: 10;
}

.nf-header__workspace-name {
  font-size: var(--nf-text-sm);
  color: var(--nf-text-secondary);
}

.nf-header__actions {
  display: flex;
  align-items: center;
  gap: var(--nf-space-sm);
}

/* Content area */
.nf-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--nf-space-lg);
}

/* Welcome screen */
.nf-welcome {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.nf-welcome__card {
  text-align: center;
  padding: var(--nf-space-2xl);
  background: var(--nf-bg-surface);
  border: 1px solid var(--nf-border);
  border-radius: var(--nf-radius-lg);
}

.nf-welcome__card h2 {
  font-size: var(--nf-text-2xl);
  margin-bottom: var(--nf-space-sm);
}

.nf-welcome__card p {
  color: var(--nf-text-secondary);
  margin-bottom: var(--nf-space-lg);
}

/* Toast container */
.nf-toast-container {
  position: fixed;
  bottom: var(--nf-space-lg);
  right: var(--nf-space-lg);
  display: flex;
  flex-direction: column-reverse;
  gap: var(--nf-space-sm);
  z-index: 1000;
  pointer-events: none;
}

/* Modal container */
.nf-modal-container {
  display: none;
}

.nf-modal-container--open {
  display: flex;
  position: fixed;
  inset: 0;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 12, 0.35);
  z-index: 900;
}