.app {
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #2a2f3a;
  background: #151922;
}

.app-header h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.app-header nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.app-header nav a {
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  color: #a8b0bd;
}

  .app-header nav a.active {
  background: #2b3445;
  color: #fff;
}

.app-user {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.25rem;
  padding-left: 0.5rem;
  border-left: 1px solid #2a2f3a;
  color: #8b939f;
  font-size: 0.8rem;
  white-space: nowrap;
}

.app-logout {
  padding: 0.35rem 0.6rem;
  border: 1px solid #3a4254;
  border-radius: 6px;
  background: transparent;
  color: #c5ccd6;
  cursor: pointer;
  font-size: 0.75rem;
}

.app-logout:hover {
  background: #2b3445;
}

.app-main {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

@media (max-width: 768px) {
  .app-header {
    padding: 0.55rem 0.75rem;
    gap: 0.5rem;
    flex-shrink: 0;
  }

  .app-header h1 {
    display: none;
  }

  .app-header nav {
    flex: 1;
    overflow-x: auto;
    flex-wrap: nowrap;
    gap: 0.35rem;
    padding-bottom: 0.1rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .app-header nav::-webkit-scrollbar {
    display: none;
  }

  .app-header nav a {
    padding: 0.4rem 0.65rem;
    font-size: 0.85rem;
    white-space: nowrap;
    flex-shrink: 0;
  }
}

.app-main-chat {
  overflow: hidden;
}

.route-panel {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  visibility: hidden;
  pointer-events: none;
}

.route-panel-active {
  visibility: visible;
  pointer-events: auto;
}

.app-main:not(.app-main-chat) > .route-panel-active {
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}