/* Unified top toolbar — responsive flex; surfaces follow --panel / --line / --text */
.topbar.topbar-unified {
  display: flex;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  flex: 0 0 auto;
  flex-shrink: 0;
  position: relative;
  top: auto;
  left: auto;
  right: auto;
  background: transparent;
  border-bottom: none;
  box-shadow: none;
  padding: 6px 8px;
  overflow: visible;
}

.topbar-unified-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
  flex: 1 1 auto;
  flex-shrink: 0;
  min-width: 0;
  min-height: 44px;
  padding: 6px 8px;
  gap: 6px;
  flex-wrap: wrap;
  border-radius: 12px;
  background: var(--toolbar-surface, var(--panel, #161b27));
  border: 1px solid var(--toolbar-border, var(--line, #283246));
  box-shadow: var(--toolbar-shadow, var(--shadow-sm, 0 4px 14px rgba(0, 0, 0, 0.22)));
  color: var(--text);
}

html[data-theme="light"] .topbar-unified-panel {
  --toolbar-surface: color-mix(in srgb, var(--accent) 14%, #eef3fc);
  --toolbar-border: color-mix(in srgb, var(--accent) 28%, var(--line));
  --toolbar-shadow: 0 4px 18px color-mix(in srgb, var(--accent) 10%, transparent);
  background: var(--toolbar-surface);
  border-color: var(--toolbar-border);
  box-shadow: var(--toolbar-shadow);
}

html:not([data-theme="light"]) .topbar-unified-panel {
  --toolbar-surface: var(--panel, #161b27);
  --toolbar-border: var(--line, #283246);
  --toolbar-shadow: 0 4px 18px rgba(0, 0, 0, 0.38);
}

.topbar-unified .topbar-minimal-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
  flex: 1 1 100%;
  min-width: 0;
  gap: 6px;
  flex-wrap: wrap;
}

/* Groups */
.topbar-unified .tb-group,
.topbar-unified .topbar-overflow-leading-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 1;
  min-width: 0;
}

.topbar-unified .tb-group.tb-nav {
  flex: 0 1 auto;
}

.topbar-unified .tb-insert-wrap {
  flex: 0 0 auto;
  position: relative;
}

.topbar-unified .topbar-minimal-start,
.topbar-unified .topbar-minimal-end {
  flex-shrink: 1 !important;
}

.topbar-unified .topbar-minimal-end {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  width: fit-content;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.topbar-unified .topbar-overflow-leading-wrap.tb-group.tb-user {
  flex: 0 0 auto;
  flex-shrink: 0;
  margin-left: auto;
}

/* Keep secondary tools in DOM for JS / overflow menu — not in the visible row */
.topbar-unified #topbarOffscreenTools {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
  display: block !important;
}

.topbar-unified .topbar-minimal-spacer {
  display: none !important;
}

.topbar-unified .topbar-desktop-quick #addNodeBtn {
  display: none !important;
}

.topbar-unified .topbar-group-actions,
.topbar-unified .mobile-inspector-actions {
  display: none !important;
}

/* Insert button */
.tb-insert-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  background: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 75%, #0f1730);
  color: #f8faff;
  flex-shrink: 0;
}

.tb-insert-btn .icon-svg {
  width: 18px;
  height: 18px;
  display: flex !important;
}

.tb-insert-btn .icon-svg svg {
  stroke: #f8faff;
}

.tb-insert-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: calc(var(--z-sticky-topbar) + 80);
  min-width: 200px;
  padding: 6px;
  display: none;
  flex-direction: column;
  gap: 2px;
  background: var(--modal-surface);
  border: 1px solid var(--modal-border);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(8, 14, 28, 0.28);
}

.tb-insert-menu.open {
  display: flex;
}

.tb-insert-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 36px;
  padding: 6px 10px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.tb-insert-item .icon-svg {
  display: flex !important;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent);
}

/* Icon buttons — compact, always show inline SVG */
.topbar-unified-panel .icon-btn {
  flex-shrink: 0;
  min-width: 32px;
  min-height: 32px;
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel) 72%, #fff 28%);
  border-color: color-mix(in srgb, var(--accent) 18%, var(--line));
  color: var(--text);
}

html:not([data-theme="light"]) .topbar-unified-panel .icon-btn {
  background: color-mix(in srgb, var(--panel) 88%, #2a3348);
  border-color: var(--line);
  color: #e7edf6;
}

html:not([data-theme="light"]) .topbar-unified-panel .icon-btn .icon-svg {
  color: #e7edf6;
}

html:not([data-theme="light"]) .topbar-unified-panel .text-btn-sm,
html:not([data-theme="light"]) .topbar-unified-panel #authBtn {
  color: var(--text);
}

.topbar-unified-panel .icon-btn .icon-svg {
  display: flex !important;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.topbar-unified-panel .icon-svg svg {
  display: block;
  width: 100%;
  height: 100%;
  stroke: currentColor;
  fill: none;
}

html:not([data-theme="light"]) .topbar-unified-panel .icon-svg svg {
  stroke: #e7edf6;
}

html:not([data-theme="light"]) .topbar-unified-panel a.topbar-home-btn {
  color: #e7edf6;
}

.topbar-unified-panel .icon-btn .icon-svg svg [fill="currentColor"] {
  fill: currentColor;
  stroke: none;
}

.topbar-unified-panel .text-btn-sm {
  flex-shrink: 1;
  min-height: 32px;
  padding: 0 8px;
  font-size: 11px;
}

.topbar-unified-panel .icon-btn:hover,
.topbar-unified-panel .text-btn-sm:hover,
.topbar-unified-panel .tb-insert-btn:hover,
.topbar-unified-panel #authBtn:hover {
  transform: scale(1.05);
  transition: transform 0.2s ease-in-out;
}

.topbar-unified-panel .icon-btn:focus-visible,
.topbar-unified-panel .text-btn-sm:focus-visible,
.topbar-unified-panel .tb-insert-btn:focus-visible,
.topbar-unified-panel #authBtn:focus-visible,
.topbar-unified-panel .tb-insert-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.topbar-unified .saved {
  font-size: 11px;
  white-space: nowrap;
  flex-shrink: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 64px;
}

.topbar-unified .topbar-auth {
  flex-shrink: 0;
}

.topbar-unified .topbar-google-btn,
.topbar-unified #authBtn {
  flex-shrink: 0;
}

/* Theme toggle visibility */
.topbar-unified .theme-toggle-btn .icon-svg.icon-theme-sun,
.topbar-unified .theme-toggle-btn .icon-svg.icon-theme-moon {
  display: none;
}

html:not([data-theme="light"]) .topbar-unified .theme-toggle-btn .icon-svg.icon-theme-sun {
  display: flex !important;
}

html[data-theme="light"] .topbar-unified .theme-toggle-btn .icon-svg.icon-theme-moon {
  display: flex !important;
}

@media (max-width: 1200px) {
  .topbar-unified .topbar-minimal-end .icon-btn:not(#undoBtn):not(#redoBtn):not(#fitViewBtn):not(#themeToggleBtn) {
    display: none;
  }
}

@media (max-width: 900px) {
  .topbar-unified .desktop-sidebar-toggles {
    display: none;
  }
  .tb-insert-btn .tb-insert-label {
    display: none;
  }
}

@media (max-width: 1024px) {
  .topbar-unified .topbar-share-host {
    display: flex;
    align-items: center;
    flex-shrink: 0;
  }

  .topbar-unified .topbar-share-host .share-header-btn {
    min-width: 44px;
    min-height: 44px;
    width: 44px;
    height: 44px;
  }

  .topbar-unified .topbar-overflow-leading-wrap {
    gap: 4px;
  }
}

@media (min-width: 1025px) {
  .topbar-unified .topbar-share-host {
    display: none !important;
  }
}

@media (max-width: 760px) {
  .topbar.topbar-unified {
    position: relative;
    top: auto;
    padding-top: max(4px, env(safe-area-inset-top, 0px));
    padding-left: max(6px, env(safe-area-inset-left, 0px));
    padding-right: max(6px, env(safe-area-inset-right, 0px));
  }
  .topbar-unified-panel {
    padding: 4px 6px;
  }
  .topbar-unified-panel .icon-btn {
    min-width: 36px;
    min-height: 36px;
    width: 36px;
    height: 36px;
  }
}