/* =============================================================================
   GLASS — workspace.css
   Application-shell primitives for editors, agents, dashboards, and operations
   consoles. Layout only: every painted value comes from the shared semantic
   token system. Consumers own state and behavior through native ARIA attributes
   and data attributes; this stylesheet adds no JavaScript runtime.

   Requires tokens.css and primitives.css. Verified by contrast.mjs and the
   interactive workspace specimen in demo/index.html.
   ============================================================================= */

.workspace-frame {
  --workspace-nav: clamp(12rem, 20vw, 17rem);
  --workspace-aside: clamp(16rem, 26vw, 23rem);
  --workspace-dock: minmax(9rem, 30%);
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-block-size: 32rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  background: var(--bg);
  color: var(--ink);
}

.workspace-titlebar,
.workspace-statusbar {
  display: flex;
  align-items: center;
  min-block-size: calc(var(--target-min) + var(--sp-3));
  gap: var(--sp-2);
  padding-block: 0;
  padding-inline: var(--sp-3);
  background: var(--gl-fill);
  -webkit-backdrop-filter: var(--gl-blur);
  backdrop-filter: var(--gl-blur);
}

.workspace-titlebar { border-block-end: 1px solid var(--line); }

.workspace-statusbar {
  min-block-size: var(--target-min);
  justify-content: space-between;
  border-block-start: 1px solid var(--line);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: var(--fs-0);
}

.workspace-toolbar-group {
  display: flex;
  align-items: center;
  min-inline-size: 0;
  gap: var(--sp-1);
}

.workspace-toolbar-group[data-align="end"] { margin-inline-start: auto; }

.workspace-icon-button {
  display: inline-grid;
  min-inline-size: var(--target-min);
  min-block-size: var(--target-min);
  place-items: center;
  padding: var(--sp-1);
  border: 1px solid transparent;
  border-radius: var(--r-1);
  background: transparent;
  color: var(--ink-2);
  font: inherit;
  cursor: pointer;
}

.workspace-icon-button:hover,
.workspace-icon-button[aria-pressed="true"] {
  border-color: var(--line);
  background: var(--raised);
  color: var(--ink);
}

.workspace-icon-button:focus-visible,
.workspace-tab:focus-visible,
.workspace-tree-item:focus-visible,
.workspace-divider:focus-visible {
  outline: var(--focus-w) solid var(--focus);
  outline-offset: calc(var(--focus-off) * -1);
}

.workspace-body {
  display: grid;
  min-block-size: 0;
  grid-template-columns: var(--workspace-nav) minmax(0, 1fr) var(--workspace-aside);
}

.workspace-sidebar,
.workspace-aside,
.workspace-main,
.workspace-editor,
.workspace-dock {
  min-inline-size: 0;
  min-block-size: 0;
}

.workspace-sidebar,
.workspace-aside {
  overflow: auto;
  background: var(--surface);
}

.workspace-sidebar { border-inline-end: 1px solid var(--line); }
.workspace-aside { border-inline-start: 1px solid var(--line); }

.workspace-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-block-size: calc(var(--target-min) + var(--sp-3));
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border-block-end: 1px solid var(--line);
  color: var(--ink-2);
  font-size: var(--fs-0);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.workspace-tree {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: var(--sp-2);
  list-style: none;
}

.workspace-tree ul:not([hidden]) {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0 0 0 var(--sp-4);
  list-style: none;
}

.workspace-tree-item {
  display: flex;
  align-items: center;
  width: 100%;
  min-block-size: var(--target-min);
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-2);
  border: 1px solid transparent;
  border-radius: var(--r-1);
  background: transparent;
  color: var(--ink-2);
  font: inherit;
  font-size: var(--fs-0);
  text-align: start;
  cursor: pointer;
}

.workspace-tree-item:hover,
.workspace-tree-item[aria-current="page"] {
  background: var(--raised);
  color: var(--ink);
}

.workspace-tree-item[aria-expanded]::before {
  content: "";
  inline-size: var(--sp-2);
  block-size: var(--sp-2);
  flex: none;
  border-inline-end: 1px solid currentColor;
  border-block-end: 1px solid currentColor;
  transform: rotate(-45deg);
  transition: transform var(--t-fast) var(--ease);
}

.workspace-tree-item[aria-expanded="true"]::before { transform: rotate(45deg); }

.workspace-main {
  display: grid;
  grid-template-rows: minmax(0, 1fr) var(--workspace-dock);
  background: var(--bg);
}

.workspace-editor {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
}

.workspace-tabstrip {
  display: flex;
  min-inline-size: 0;
  overflow-x: auto;
  border-block-end: 1px solid var(--line);
  background: var(--surface);
  scrollbar-width: thin;
}

.workspace-tab {
  display: inline-flex;
  min-block-size: calc(var(--target-min) + var(--sp-2));
  align-items: center;
  flex: 0 0 auto;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-3);
  border: 0;
  border-inline-end: 1px solid var(--line);
  border-block-end: 2px solid transparent;
  background: transparent;
  color: var(--ink-2);
  font: inherit;
  font-size: var(--fs-0);
  cursor: pointer;
}

.workspace-tab:hover { color: var(--ink); }

.workspace-tab[aria-selected="true"] {
  border-block-end-color: var(--accent);
  background: var(--raised);
  color: var(--ink);
}

.workspace-editor-grid {
  --workspace-primary-pane: 58%;
  display: grid;
  min-block-size: 0;
  grid-template-columns: minmax(0, var(--workspace-primary-pane)) var(--sp-1) minmax(0, 1fr);
}

.workspace-pane {
  min-inline-size: 0;
  overflow: auto;
  padding: var(--sp-4);
  background: var(--bg);
}

.workspace-divider {
  position: relative;
  border: 0;
  background: var(--line);
  cursor: col-resize;
}

.workspace-divider::after {
  content: "";
  position: absolute;
  inset: 0 calc(var(--sp-3) * -1);
}

.workspace-dock {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
  border-block-start: 1px solid var(--line);
  background: var(--surface);
}

.workspace-dock-content {
  overflow: auto;
  padding: var(--sp-3);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: var(--fs-0);
}

.command-composer {
  display: grid;
  gap: var(--sp-2);
  margin: var(--sp-3);
  padding: var(--sp-3);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  background: var(--raised);
}

.command-composer textarea {
  min-block-size: 4.5rem;
  resize: vertical;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  line-height: var(--lh-2);
}

.command-composer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  color: var(--ink-2);
  font-size: var(--fs-0);
}

.thinking-disclosure {
  margin: var(--sp-3);
  border-block-end: 1px solid var(--line);
  color: var(--ink-2);
  font-size: var(--fs-0);
}

.thinking-disclosure summary {
  min-block-size: var(--target-min);
  padding-block: var(--sp-1);
  color: var(--ink);
  cursor: pointer;
}

.thinking-disclosure > :not(summary) { margin-inline-start: var(--sp-4); }

.search-filter-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.search-filter-bar .field { flex: 1 1 14rem; }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: var(--sp-3);
}

.metric-card {
  display: grid;
  gap: var(--sp-1);
  min-inline-size: 0;
  padding: var(--sp-4);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  background: var(--surface);
}

.metric-card-label { color: var(--ink-2); font-size: var(--fs-0); }

.metric-card-value {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  font-variant-numeric: tabular-nums;
}

.workspace-frame[data-nav-collapsed="true"] .workspace-body {
  grid-template-columns: 0 minmax(0, 1fr) var(--workspace-aside);
}

.workspace-frame[data-nav-collapsed="true"] .workspace-sidebar,
.workspace-frame[data-aside-collapsed="true"] .workspace-aside {
  visibility: hidden;
  overflow: hidden;
}

.workspace-frame[data-aside-collapsed="true"] .workspace-body {
  grid-template-columns: var(--workspace-nav) minmax(0, 1fr) 0;
}

.workspace-frame[data-nav-collapsed="true"][data-aside-collapsed="true"] .workspace-body {
  grid-template-columns: 0 minmax(0, 1fr) 0;
}

@media (max-width: 900px) {
  .workspace-frame { --workspace-nav: min(44vw, 16rem); }
  .workspace-body { grid-template-columns: var(--workspace-nav) minmax(0, 1fr); }
  .workspace-aside {
    position: absolute;
    z-index: var(--z-dropdown);
    inset: calc(var(--target-min) + var(--sp-3)) 0 var(--target-min) auto;
    inline-size: min(88vw, var(--workspace-aside));
    border-inline-start: 1px solid var(--line);
    box-shadow: var(--gl-shadow);
  }
  .workspace-frame[data-aside-collapsed="true"] .workspace-aside { display: none; }
  .workspace-frame[data-aside-collapsed="false"] .workspace-aside { visibility: visible; }
  .workspace-frame[data-aside-collapsed="true"] .workspace-body,
  .workspace-frame[data-nav-collapsed="true"][data-aside-collapsed="true"] .workspace-body {
    grid-template-columns: var(--workspace-nav) minmax(0, 1fr);
  }
  .workspace-frame[data-nav-collapsed="true"] .workspace-body { grid-template-columns: 0 minmax(0, 1fr); }
}

@media (max-width: 640px) {
  .workspace-frame { min-block-size: 38rem; }
  .workspace-body { grid-template-columns: minmax(0, 1fr); }
  .workspace-sidebar {
    position: absolute;
    z-index: var(--z-dropdown);
    inset: calc(var(--target-min) + var(--sp-3)) auto var(--target-min) 0;
    inline-size: min(86vw, 17rem);
    box-shadow: var(--gl-shadow);
  }
  .workspace-frame[data-nav-collapsed="true"] .workspace-sidebar { display: none; }
  .workspace-frame[data-nav-collapsed="false"] .workspace-sidebar { visibility: visible; }
  .workspace-frame[data-nav-collapsed="true"] .workspace-body,
  .workspace-frame[data-aside-collapsed="true"] .workspace-body,
  .workspace-frame[data-nav-collapsed="true"][data-aside-collapsed="true"] .workspace-body {
    grid-template-columns: minmax(0, 1fr);
  }
  .workspace-editor-grid {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(9rem, 1fr) var(--sp-1) minmax(9rem, 1fr);
  }
  .workspace-divider { cursor: row-resize; }
  .workspace-divider::after { inset: calc(var(--sp-3) * -1) 0; }
  .workspace-statusbar { overflow-x: auto; white-space: nowrap; }
}