/* Kit styles. Tokens live on :root so a project can retheme without
   editing every control. Evalight's chrome and the lamp template both
   set these variables. */

:root {
  --ui-fg: CanvasText;
  --ui-bg: Canvas;
  --ui-muted: GrayText;
  --ui-line: ButtonBorder;
  --ui-accent: Highlight;
  --ui-accent-fg: HighlightText;
  --ui-danger: tomato;
  --ui-danger-fg: #fff;
  --ui-overlay: rgba(0, 0, 0, 0.45);
  --ui-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  --ui-font: inherit;
  --ui-serif: inherit;
  --ui-radius: 10px;
  --ui-radius-full: 999px;
}

.ui-btn {
  font: inherit;
  font-family: var(--ui-font);
  color: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: var(--ui-radius-full);
  border: 1px solid var(--ui-line);
  background: transparent;
  padding: 0.4rem 0.85rem;
  line-height: 1.2;
}
.ui-btn:hover { border-color: var(--ui-accent); }
.ui-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.ui-btn-primary {
  background: var(--ui-accent);
  color: var(--ui-accent-fg);
  border-color: var(--ui-accent);
  font-weight: 600;
}
.ui-btn-primary:hover { filter: brightness(1.05); }
.ui-btn-danger {
  background: var(--ui-danger);
  color: var(--ui-danger-fg);
  border-color: var(--ui-danger);
}
.ui-btn-icon { padding: 0.38rem; }
.ui-btn-icon svg { width: 1rem; height: 1rem; display: block; }
.ui-btn-sm { padding: 0.22rem 0.6rem; font-size: 0.82rem; }
.ui-btn-lg { padding: 0.55rem 1.1rem; font-size: 1.02rem; }
.ui-btn svg { width: 1rem; height: 1rem; }

.ui-input,
.ui-textarea,
.ui-select {
  font: inherit;
  font-family: var(--ui-font);
  color: inherit;
  width: 100%;
  background: var(--ui-bg);
  border: 1px solid var(--ui-line);
  border-radius: var(--ui-radius);
  padding: 0.5rem 0.7rem;
}
.ui-input:focus,
.ui-textarea:focus,
.ui-select:focus {
  outline: none;
  border-color: var(--ui-accent);
}
.ui-textarea { min-height: 5rem; resize: vertical; }
.ui-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23888' stroke-width='1.7' stroke-linecap='round'><path d='M3 4.5 6 8l3-3.5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0.55rem center;
  background-size: 0.75rem;
  padding-right: 1.7rem;
}

.ui-field { display: grid; gap: 0.3rem; }
.ui-field-label { font-size: 0.82rem; color: var(--ui-muted); }
.ui-field-hint { font-size: 0.78rem; color: var(--ui-muted); }
.ui-field-hint.is-error { color: var(--ui-danger); }

.ui-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 40;
  padding: 1rem;
}
.ui-backdrop {
  position: absolute;
  inset: 0;
  background: var(--ui-overlay);
}
.ui-dialog {
  position: relative;
  z-index: 1;
  width: min(28rem, calc(100vw - 2rem));
  max-height: min(40rem, calc(100dvh - 2rem));
  overflow: auto;
  background: var(--ui-bg);
  color: var(--ui-fg);
  border: 1px solid var(--ui-line);
  border-radius: 16px;
  padding: 1.1rem;
  box-shadow: var(--ui-shadow);
  pointer-events: auto;
}
.ui-dialog-title {
  font-family: var(--ui-serif);
  font-size: 1.2rem;
  font-weight: 560;
  margin: 0 0 0.5rem;
}
.ui-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.4rem;
  margin-top: 1rem;
}

.ui-popover { position: relative; display: inline-flex; }
.ui-popover-dismiss, .ui-crumbs-dismiss { display: none; }
.ui-popover-panel {
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  z-index: 19;
  min-width: min(14rem, calc(100vw - 24px));
  max-width: min(22rem, calc(100vw - 24px));
  box-sizing: border-box;
  overflow-y: auto;
  background: var(--ui-bg);
  color: var(--ui-fg);
  border: 1px solid var(--ui-line);
  border-radius: 12px;
  padding: 0.75rem 0.85rem;
  box-shadow: var(--ui-shadow);
}
.ui-popover-panel.is-end { left: auto; right: 0; }

.ui-split {
  display: flex;
  min-width: 0;
  min-height: 8rem;
  overflow: hidden;
}
.ui-split.is-col { flex-direction: column; }
.ui-split-pane {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  flex: 1 1 0;
}
.ui-split-handle {
  touch-action: none;
  user-select: none;
  flex: 0 0 6px;
  background: transparent;
  cursor: col-resize;
  position: relative;
}
.ui-split-handle::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
  background: var(--ui-line);
}
.ui-split-handle:hover::before,
.ui-split-handle:focus::before {
  width: 2px;
  background: var(--ui-accent);
}
.ui-split-handle[aria-orientation="horizontal"] { cursor: row-resize; }
.ui-split-handle[aria-orientation="horizontal"]::before {
  left: 0;
  right: 0;
  top: 50%;
  bottom: auto;
  width: auto;
  height: 1px;
  transform: translateY(-50%);
}
.ui-split-handle[aria-orientation="horizontal"]:hover::before,
.ui-split-handle[aria-orientation="horizontal"]:focus::before {
  height: 2px;
}

.ui-crumbs {
  position: relative;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  min-width: 0;
  overflow: visible;
  font: inherit;
}
.ui-crumbs.is-open { z-index: 19; }

.ui-crumb-wrap { position: relative; display: inline-flex; align-items: center; flex: none; }
.ui-crumb-sep { opacity: 0.55; user-select: none; }
.ui-crumb,
.ui-crumb-option {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0.1rem 0.2rem;
  border-radius: 6px;
  line-height: 1.2;
}
.ui-crumb:hover,
.ui-crumb-option:hover,
.ui-crumb.is-open { background: color-mix(in srgb, var(--ui-accent) 18%, transparent); }
.ui-crumb.is-current { font-weight: 600; }
.ui-crumb-empty { opacity: 0.65; }
.ui-crumb-menu {
  position: absolute;
  top: calc(100% + 0.25rem);
  left: 0;
  z-index: 19;
  min-width: 10rem;
  max-width: 22rem;
  max-height: 18rem;
  overflow: auto;
  padding: 0.25rem;
  background: var(--ui-bg);
  color: var(--ui-fg);
  border: 1px solid var(--ui-line);
  border-radius: 10px;
  box-shadow: var(--ui-shadow);
}
.ui-crumb-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.35rem 0.5rem;
}
.ui-crumb-option.is-current { font-weight: 600; }

.ui-command {
  position: relative;
  z-index: 1;
  width: min(36rem, calc(100vw - 2rem));
  max-height: calc(100dvh - 2rem);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--ui-bg);
  color: var(--ui-fg);
  border: 1px solid var(--ui-line);
  border-radius: 14px;
  padding: 0.6rem;
  box-shadow: var(--ui-shadow);
  pointer-events: auto;
}
.ui-command.is-panel {
  width: min(22rem, 70vw);
  padding: 0.4rem;
  box-shadow: var(--ui-shadow);
}
.ui-command-dismiss {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}
.ui-command-input { margin-bottom: 0.4rem; }
.ui-command-list {
  flex: 1 1 auto;
  min-height: 0;
  max-height: min(32rem, calc(100dvh - 7rem));
  overflow: auto;
  display: grid;
  gap: 0.1rem;
  padding-bottom: 0.55rem;
  scroll-padding-bottom: 0.45rem;
}
.ui-command-group {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ui-muted);
  padding: 0.45rem 0.5rem 0.15rem;
}
.ui-command-item {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  width: 100%;
  text-align: left;
  padding: 0.4rem 0.55rem;
}
.ui-command-item:hover,
.ui-command-item.is-active {
  background: color-mix(in srgb, var(--ui-accent) 18%, transparent);
}
.ui-command-hint { color: var(--ui-muted); font-size: 0.8rem; }
.ui-command-empty {
  color: var(--ui-muted);
  padding: 0.7rem 0.5rem;
}

/* Shared compact controls */
.ui-tooltip-anchor { display: inline-flex; }
.ui-tooltip {
  position: fixed; inset: auto; margin: 0; max-width: calc(100vw - 16px);
  padding: 6px 9px; border: 1px solid var(--ui-line); border-radius: 6px;
  background: var(--ui-bg); color: var(--ui-fg); box-shadow: var(--ui-shadow);
  font: 0.75rem/1.4 var(--ui-font); pointer-events: none;
}
.ui-dropdown-panel { padding: 6px; }
.ui-dropdown { display: flex; flex-direction: column; min-width: 12rem; gap: 2px; }
.ui-dropdown-item {
  display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px;
  border: 0; border-radius: 5px; background: transparent; color: var(--ui-fg);
  text-align: left; font: inherit; cursor: pointer;
}
.ui-dropdown-item svg { width: 16px; height: 16px; flex: none; }
.ui-dropdown-item:hover:not(:disabled), .ui-dropdown-item:focus-visible { background: color-mix(in srgb, var(--ui-accent) 12%, transparent); outline: 1px solid var(--ui-accent); }
.ui-dropdown-item.is-danger { color: var(--ui-danger); }
.ui-dropdown-item:disabled { opacity: 0.45; cursor: default; }
.ui-dropdown-separator { height: 1px; margin: 5px; background: var(--ui-line); }
.ui-tab-list { display: flex; gap: 4px; border-bottom: 1px solid var(--ui-line); }
.ui-tab-list[aria-orientation="vertical"] { flex-direction: column; border-bottom: 0; }
.ui-tab {
  padding: 8px 12px; border: 0; border-bottom: 2px solid transparent;
  background: transparent; color: var(--ui-muted); font: inherit; cursor: pointer;
}
.ui-tab[aria-selected="true"] { color: var(--ui-accent); border-color: var(--ui-accent); }
.ui-tab:disabled { opacity: 0.45; cursor: default; }
.ui-tab:focus-visible, .ui-tab-panel:focus-visible { outline: 2px solid var(--ui-accent); outline-offset: -2px; }
.ui-tab-panel { padding: 12px 0; }
.ui-tab-panel[hidden] { display: none; }
.ui-check { display: inline-flex; align-items: center; gap: 7px; font-family: var(--ui-font); cursor: pointer; }
.ui-check input { margin: 0; accent-color: var(--ui-accent); flex: none; }
.ui-check:has(input:disabled) { opacity: 0.55; cursor: default; }
.ui-check input:focus-visible { outline: 2px solid var(--ui-accent); outline-offset: 3px; }
.ui-switch input {
  appearance: none; width: 30px; height: 18px; border: 1px solid var(--ui-line);
  border-radius: 20px; background: var(--ui-muted); position: relative; cursor: inherit;
}
.ui-switch input::before {
  content: ""; position: absolute; width: 12px; height: 12px; top: 2px; left: 2px;
  border-radius: 50%; background: var(--ui-bg); transition: transform 120ms;
}
.ui-switch input:checked { background: var(--ui-accent); border-color: var(--ui-accent); }
.ui-switch input:checked::before { transform: translateX(12px); background: var(--ui-accent-fg); }
.ui-disclosure { border-bottom: 1px solid var(--ui-line); }
.ui-disclosure-title { padding: 12px 0; cursor: pointer; font-weight: 600; }
.ui-disclosure-title::marker { color: var(--ui-muted); }
.ui-disclosure-title:focus-visible { outline: 2px solid var(--ui-accent); outline-offset: 2px; }
.ui-disclosure-body { padding: 0 0 12px; }
.ui-toast {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  max-width: calc(100vw - 24px); border: 1px solid var(--ui-line); border-radius: 8px;
  background: var(--ui-bg); color: var(--ui-fg); box-shadow: var(--ui-shadow);
  font-family: var(--ui-font);
}
.ui-toast.is-error { border-color: var(--ui-danger); }
.ui-toast-message { min-width: 0; overflow-wrap: anywhere; }
.ui-toast-action, .ui-toast-close {
  border: 0; background: transparent; color: inherit; cursor: pointer; font: inherit;
}
.ui-toast-action { color: var(--ui-accent); text-decoration: underline; }
.ui-toast-close { display: inline-flex; padding: 4px; margin-left: auto; }
.ui-toast-action:focus-visible, .ui-toast-close:focus-visible { outline: 2px solid var(--ui-accent); }
.ui-toast-dismiss-event { display: none; }
@media (prefers-reduced-motion: reduce) { .ui-switch input::before { transition: none; } }

.ui-dropdown-heading { padding: .4rem .6rem; font-size: .72rem; color: var(--ui-muted); text-transform: uppercase; letter-spacing: .08em; }

/* Shared controlled tree */
.ui-tree {
  overflow: auto;
  padding: 0.4rem 0.35rem 1rem 0.2rem;
  color: var(--ui-fg);
}
.ui-tree .tree-children {
  margin-left: 0.72rem;
  padding-left: 0.72rem;
  border-left: 1px solid var(--ui-line);
}
.ui-tree .tree-row {
  display: flex;
  align-items: center;
  position: relative;
  min-width: 0;
}
.ui-tree .tree-item {
  flex: 1;
  min-width: 0;
  background: none;
  border: 0;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.3rem;
  border-radius: 6px;
  color: inherit;
  text-align: left;
  cursor: pointer;
}
.ui-tree .tree-item:hover,
.ui-tree .tree-item:focus-visible { background: color-mix(in srgb, var(--ui-accent) 10%, transparent); }
.ui-tree .tree-item:focus-visible { outline: 2px solid var(--ui-accent); outline-offset: -2px; }
.ui-tree .tree-item svg { width: 0.95rem; height: 0.95rem; color: var(--ui-muted); flex: none; }
.ui-tree .tree-item .tree-chevron { width: .7rem; height: .7rem; color: var(--ui-muted); }
.ui-tree .tree-item.is-active { background: color-mix(in srgb, var(--ui-accent) 15%, transparent); color: var(--ui-accent); }
.ui-tree .tree-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.ui-tree .twisty {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.1rem;
  height: 1.1rem;
  flex: none;
  line-height: 1;
  text-align: center;
  transition: transform 120ms ease;
}
.ui-tree .twisty.is-open { transform: rotate(90deg); }
.ui-tree .tree-leaf { visibility: hidden; }
.ui-tree .tree-ops {
  position: absolute;
  right: 0.2rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  gap: 0.1rem;
  opacity: 0;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--ui-bg) 32%);
  padding-left: 0.65rem;
}
.ui-tree .tree-row:hover .tree-ops,
.ui-tree .tree-row:focus-within .tree-ops {
  opacity: 1;
  pointer-events: auto;
}
@media (prefers-reduced-motion: reduce) { .ui-tree .twisty { transition: none; } }