.app {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  background: #0e0e0e;
  color: #ddd;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.sidebar {
  width: 260px;
  flex-shrink: 0;
  border-right: 1px solid #2a2a2a;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebarContent {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.browserSection {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid #2a2a2a;
}

.infoSection {
  flex-shrink: 0;
  max-height: 45vh;
  overflow-y: auto;
}

.version {
  flex-shrink: 0;
  padding: 6px 12px;
  font-size: 10px;
  color: #555;
  border-top: 1px solid #1e1e1e;
  font-family: monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

/* Mobile toggle button — hidden on desktop */
.mobileToggle {
  display: none;
}

/* ── Mobile layout (≤ 768 px) ──────────────────────────────── */
@media (max-width: 768px) {
  .app {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid #2a2a2a;
    /* collapsed: just the toggle strip */
    max-height: 48px;
    transition: max-height 0.25s ease;
    overflow: hidden;
    flex-shrink: 0;
  }

  .sidebar.sidebarOpen {
    max-height: 60vh;
  }

  .sidebarContent {
    overflow: hidden;
  }

  .sidebar.sidebarOpen .sidebarContent {
    overflow-y: auto;
    flex: 1;
    max-height: calc(60vh - 48px);
  }

  .mobileToggle {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    height: 48px;
    min-height: 48px;
    padding: 0 16px;
    background: #141414;
    color: #ddd;
    border: none;
    border-bottom: 1px solid #222;
    font-size: 14px;
    cursor: pointer;
    flex-shrink: 0;
    text-align: left;
  }

  .mobileToggle:active {
    background: #1e1e1e;
  }

  .main {
    flex: 1;
    min-height: 0;
  }

  .infoSection {
    max-height: none;
  }
}