/* Rail layout — Discord-style icon sidebar */
.rail-layout {
  flex: 1;
  display: grid;
  grid-template-columns: 64px 280px 1fr;
  overflow: hidden;
  min-height: 0;
}
.icon-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 0;
  gap: 6px;
}
.rail-brand {
  width: 44px; height: 44px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent, #4F46E5);
  color: #fff;
  margin-bottom: 4px;
}
.rail-divider { width: 32px; height: 2px; background: rgba(128,128,128,0.2); border-radius: 1px; margin: 4px 0; }
.rail-btn {
  width: 44px; height: 44px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--fg-muted);
  position: relative;
  transition: all 0.15s;
}
.rail-btn:hover { background: rgba(128,128,128,0.1); color: var(--fg); border-radius: 12px; }
.rail-btn.active { background: var(--accent); color: #fff; border-radius: 12px; }
.rail-pill {
  position: absolute;
  left: -12px; top: 50%; transform: translateY(-50%);
  width: 4px; height: 24px;
  background: var(--fg);
  border-radius: 0 3px 3px 0;
}
.rail-chatlist { display: flex; flex-direction: column; }
.rail-chatlist .chat-items { flex: 1; }
.rail-user {
  padding: 10px 12px;
  display: flex; align-items: center; gap: 10px;
  flex-shrink: 0;
}

.variant-clean.layout-rail .icon-rail { background: var(--bg-2); border-right: 1px solid var(--line); }
.variant-clean.layout-rail .rail-chatlist { background: var(--bg-3); border-right: 1px solid var(--line); }
.variant-clean.layout-rail .rail-user { background: var(--bg-2); border-top: 1px solid var(--line); }
.variant-clean.layout-rail .rail-brand { background: var(--accent); color: #fff; }