.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  height: 72px;
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(13, 17, 23, 0.96);
}

.brand,
.top-actions,
.section-heading,
.tile-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  min-width: 0;
}

.top-actions {
  gap: 10px;
  position: relative;
}

body.is-lobby .top-actions {
  display: none;
}

.room-lobby {
  min-height: calc(100vh - 72px);
  padding: 32px 18px;
}

.room-lobby-inner {
  display: grid;
  gap: 20px;
  width: min(680px, 100%);
  margin: 0 auto;
}

.room-lobby-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.app-layout {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) 380px;
  height: calc(100vh - 72px);
  transition: grid-template-columns 240ms ease;
}

.app-layout.chat-collapsed {
  grid-template-columns: 76px minmax(0, 1fr) 44px;
}

.participant-sidebar {
  min-width: 0;
  overflow: visible;
  padding: 14px 10px;
  background: rgba(8, 12, 18, 0.9);
  border-right: 1px solid var(--line);
}

.stage {
  position: relative;
  min-width: 0;
  padding: 18px;
  overflow: hidden;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  grid-auto-rows: minmax(220px, 1fr);
  align-content: start;
  gap: 14px;
  position: relative;
  height: 100%;
  min-height: 100%;
}

.side-panel {
  position: relative;
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  gap: 14px;
  padding: 18px;
  min-width: 0;
  overflow: visible;
  background: var(--panel);
  border-left: 1px solid var(--line);
  transition: padding 240ms ease, background-color 240ms ease, border-color 240ms ease;
}

.app-layout.chat-collapsed .side-panel {
  padding: 0;
  background: transparent;
  border-left-color: transparent;
}

.join-form,
.controls,
.settings-grid,
#participantList,
.chat-messages {
  display: grid;
}

.join-form {
  gap: 12px;
}

.controls {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.settings-grid {
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.settings-field.wide,
.settings-toggle.wide,
.settings-profile.wide {
  grid-column: 1 / -1;
}

#participantList,
.chat-messages {
  gap: 8px;
}