/* === Sidebar (cajón off-canvas) === */
.haon-sidebar {
  position: fixed;
  top: 60px;
  left: 0;
  bottom: 44px;
  width: 280px;
  max-width: 85vw;
  background: rgba(10, 30, 56, 0.95);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-right: 1px solid var(--bg-glass-border);
  transform: translateX(-100%);
  visibility: hidden;
  will-change: transform;
  z-index: 40;
  display: flex;
  flex-direction: column;
}
.haon-sidebar.is-animating {
  transition: transform 0.25s ease, visibility 0s linear 0.25s;
}
.haon-sidebar.is-open {
  visibility: visible;
  transition: transform 0.25s ease, visibility 0s linear 0s;
}
.haon-sidebar.is-open { transform: translateX(0); }

.haon-sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--bg-glass-border);
}
.haon-sidebar-newchat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--bg-glass-border);
  background: transparent;
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 400;
  transition: all var(--transition-fast);
  font-family: inherit;
}
.haon-sidebar-newchat:hover {
  background: var(--bg-glass-hover);
  border-color: var(--haon-accent);
}
.haon-sidebar-close {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.haon-sidebar-close:hover { background: var(--bg-glass); color: var(--text-primary); }

.haon-sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 8px;
}
.haon-sidebar-section { margin-bottom: 16px; }
.haon-sidebar-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-faint);
  padding: 6px 10px;
  text-transform: uppercase;
}
.haon-conv-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  text-decoration: none;
  transition: all var(--transition-fast);
}
.haon-conv-item:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}
.haon-conv-title { font-weight: 500; letter-spacing: 0.2px; }
.haon-conv-time { font-size: 11px; color: var(--text-faint); }

.haon-sidebar-overlay {
  position: fixed;
  top: 60px;
  left: 0; right: 0; bottom: 44px;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  transition: opacity 0.25s ease;
  z-index: 35;
}
.haon-sidebar-overlay.is-visible { opacity: 1; }