.app-shell{
  min-height: 100vh;
  display: flex;
  background: var(--bg);
}

.sidebar{
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: #090909;
  border-right: 1px solid var(--border);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition), opacity var(--transition);
  z-index: 30;
}

.sidebar__top{
  padding: 18px 16px 16px;
}

.sidebar__topbar{
  min-height: 32px;
  display: flex;
  align-items: center;
  margin-bottom: 18px;
}

.sidebar__menu-label{
  color: var(--text-soft);
  font-size: 13px;
  letter-spacing: 0.12em;
}

.sidebar__nav{
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar__footer{
  border-top: 1px solid var(--border);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.main-layout{
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar{
  min-height: 64px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 18px;
}

.content-area{
  flex: 1;
  padding: 24px;
}

.page-container{
  width: 100%;
  min-height: calc(100vh - 112px);
}

.page-screen{
  width: 100%;
}

.page-header{
  margin-bottom: 24px;
}

.page-title{
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.05;
  margin-bottom: 8px;
}

.page-subtitle{
  color: var(--text-soft);
  font-size: 16px;
}

.page-placeholder{
  background: #0d0d0f;
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 22px;
  min-height: 240px;
}

.sidebar-overlay{
  display: none;
}