/* ==========================================================================
   PRODUCT-SPECIFIC LAYER
   --------------------------------------------------------------------------
   Sits on top of variables.css + one-deswik-base.css. Never silently
   overrides foundation tokens — extends the system with product brand
   identity, layout primitives the foundation does not ship, components
   the foundation does not cover, and domain styling for mining/CAD UIs.
   ========================================================================== */


/* ==========================================================================
   1. PRODUCT BRAND TOKENS
   ========================================================================== */

:root {
  /* Product accent — distinct from foundation --active so per-product theming is visible */
  --product-accent: #7B2CBF;
  --product-accent-bg: #F3E8FF;
  --product-accent-text: #5A189A;
  --product-logo-color: var(--product-accent);

  /* Mining materials */
  --material-ore:        #1c892d;
  --material-waste:      #6b7280;
  --material-backfill:   #c9a227;
  --material-overburden: #8B5A2B;

  /* Grade gradient — low → high (7 stops, colourblind-friendly amber-orange ramp) */
  --grade-1: #fef3c7;
  --grade-2: #fde68a;
  --grade-3: #fcd34d;
  --grade-4: #fbbf24;
  --grade-5: #f59e0b;
  --grade-6: #d97706;
  --grade-7: #b45309;

  /* Runtime statuses (beyond foundation validation) */
  --status-running:  #1c892d;
  --status-queued:   #017dbb;
  --status-paused:   #ffb200;
  --status-archived: #999999;

  /* Categorical chart palette */
  --chart-1: #1571CD;
  --chart-2: #08838f;
  --chart-3: #1c892d;
  --chart-4: #ffb200;
  --chart-5: #d64040;
  --chart-6: #7B2CBF;
  --chart-7: #f97316;
  --chart-8: #0891b2;
}

body.dark-theme {
  --product-accent: #B388F5;
  --product-accent-bg: #2A1B3D;
  --product-accent-text: #D8BFFF;

  --material-ore:        #51DE67;
  --material-waste:      #9ca3af;
  --material-backfill:   #FFCC2C;
  --material-overburden: #C49A6C;

  --grade-1: #3a2e1a;
  --grade-2: #4a3a1f;
  --grade-3: #5e4923;
  --grade-4: #7a5e2a;
  --grade-5: #a07634;
  --grade-6: #c98e3e;
  --grade-7: #f0a647;

  --status-running:  #51DE67;
  --status-queued:   #7BBBF5;
  --status-paused:   #FFCC2C;
  --status-archived: #666666;
}


/* ==========================================================================
   2. LAYOUT PRIMITIVES
   --------------------------------------------------------------------------
   App shell:  56px sidebar / 48px top / main / optional 280px right panel.
   Web shell:  48px top / main / optional 280px right panel.
   ========================================================================== */

.app-shell {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  grid-template-rows: 48px 1fr;
  grid-template-areas:
    "sidebar topbar topbar"
    "sidebar main   right";
  height: 100vh;
  min-height: 0;
}
.app-shell > .top-bar         { grid-area: topbar; }
.app-shell > .sidebar         { grid-area: sidebar; }
.app-shell > main             { grid-area: main; overflow: auto; }
.app-shell > .properties-panel{ grid-area: right; }

.web-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  min-height: 0;
}
.web-shell > main { flex: 1 1 auto; overflow: auto; }
.web-shell .shell-body { flex: 1 1 auto; display: flex; min-height: 0; overflow: hidden; }
.web-shell .shell-body > main { flex: 1 1 auto; overflow: auto; min-width: 0; min-height: 0; }

.top-bar {
  height: 48px;
  flex: 0 0 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--size-5);
  border-bottom: 1px solid var(--border-1);
  background: var(--background);
  gap: var(--size-5);
}
.top-bar .site-title {
  font-weight: 600;
  color: var(--gray-10);
  letter-spacing: 0.02em;
}
.top-bar .logo {
  height: 28px;
  width: auto;
  display: block;
  flex-shrink: 0;
}

.sidebar {
  width: 56px;
  background: var(--gray-1);
  border-right: 1px solid var(--border-1);
  transition: width 0.15s ease;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.sidebar.expanded { width: 240px; }
.sidebar menu { width: 100%; padding: var(--size-2); }
.sidebar menu button { width: 100%; justify-content: flex-start; }

.properties-panel {
  flex: 0 0 320px;
  min-width: 280px;
  max-width: 600px;
  border-left: 1px solid var(--border-1);
  background: var(--gray-1);
  overflow: auto;
  padding: var(--size-5);
  resize: horizontal;
  direction: rtl;
}
.properties-panel > * { direction: ltr; }

.toolbar {
  display: flex;
  align-items: center;
  gap: var(--size-2);
  padding: var(--size-2) var(--size-3);
  border-bottom: 1px solid var(--border-1);
  background: var(--gray-1);
  flex-wrap: wrap;
}
.toolbar.floating {
  position: absolute;
  bottom: var(--size-7);
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  flex-wrap: nowrap;
  background: var(--background);
  border: 1px solid var(--border-1);
  border-radius: var(--border-radius-2);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.14);
}
.toolbar .divider {
  width: 1px;
  height: var(--size-7);
  background: var(--border-1);
  margin: 0 var(--size-1);
}


/* --------------------------------------------------------------------------
   RIBBON
   Tabbed command bar for tool-rich domain interfaces (CAD, mine planning).
   Tabs sit in a muted row above the content strip. Each content strip is
   divided into named groups; each group is a row of buttons with a centred
   label beneath. The active tab merges visually with the content strip via
   the margin-bottom / border-bottom trick.
   -------------------------------------------------------------------------- */

.ribbon {
  background: var(--background);
  border-bottom: 1px solid var(--border-1);
  user-select: none;
}
.ribbon-tabs {
  display: flex;
  align-items: flex-end;
  padding: 0 var(--size-2);
  background: var(--gray-2);
  border-bottom: 1px solid var(--border-1);
  position: relative;
}
.ribbon-tabs button {
  border: none;
  border-radius: var(--border-radius-1) var(--border-radius-1) 0 0;
  background: transparent;
  color: var(--text-color);
  font-size: 0.8125rem;
  padding: var(--size-1) var(--size-3);
  cursor: pointer;
}
.ribbon-tabs button:hover { background: var(--gray-1); }
.ribbon-tabs button.active {
  position: relative;
  z-index: 1;
  background: var(--background);
  color: var(--active-primary);
  border-top: 2px solid var(--active);
  border-left: 1px solid var(--border-1);
  border-right: 1px solid var(--border-1);
  border-bottom: 1px solid var(--background);
  margin-bottom: -1px;
  padding-bottom: calc(var(--size-1) + 1px);
}

.ribbon-content {
  display: flex;
  align-items: stretch;
  padding: var(--size-2) var(--size-3);
  min-height: var(--size-10);
  gap: 0;
  overflow-x: auto;
}
.ribbon-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--size-3);
  gap: var(--size-1);
  min-width: max-content;
}
.ribbon-group-buttons {
  display: flex;
  align-items: flex-start;
  gap: var(--size-1);
  flex: 1;
}
.ribbon-group-buttons button {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 2px;
  font-size: 0.6875rem;
  padding: var(--size-1) var(--size-2);
  min-width: 44px;
  height: auto;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--border-radius-1);
  color: var(--text-color);
}
.ribbon-group-buttons button:hover {
  background: var(--information-bg);
  color: var(--active-primary);
}
.ribbon-group-buttons button > i {
  font-size: var(--size-6);
  color: var(--active-primary);
  line-height: 1;
}
.ribbon-group-label {
  font-size: 0.6875rem;
  color: var(--gray-7);
  text-align: center;
  width: 100%;
  padding-top: var(--size-1);
  border-top: 1px solid var(--border-1);
}
.ribbon-separator {
  width: 1px;
  background: var(--border-1);
  margin: 0 var(--size-2);
  align-self: stretch;
}


/* --------------------------------------------------------------------------
   TABLET SCALE
   Applies a 40% size increase to font-size, button padding, and table row
   padding. Achieved by overriding the CSS custom property tokens — all
   components that reference var(--size-N) or var(--font-size-base) inherit
   the new values automatically.
   -------------------------------------------------------------------------- */

.tablet-scale {
  --font-size-base: 1.225rem;   /* --size-4 × 1.4  =  0.875 × 1.4 */
  --size-1: 0.35rem;
  --size-2: 0.7rem;
  --size-3: 1.05rem;
  --size-4: 1.225rem;
  --size-5: 1.4rem;
  --size-6: 1.75rem;
  --size-7: 2.1rem;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--size-5);
  margin-bottom: var(--size-7);
}
.page-header .title-group { display: flex; flex-direction: column; gap: var(--size-1); }
.page-header h1 { margin: 0; }

.page-content { padding: var(--size-8); }

.split-view { display: flex; min-height: 0; height: 100%; }
.split-view > * { flex: 1; min-width: 0; }
.split-view .splitter {
  flex: 0 0 4px;
  background: var(--border-1);
  cursor: col-resize;
}
.split-view .splitter:hover { background: var(--active); }


/* ==========================================================================
   3. OVERLAYS
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: var(--background);
  color: var(--text-color);
  border-radius: var(--border-radius-3);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
  min-width: 400px;
  max-width: 600px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--size-5);
  border-bottom: 1px solid var(--border-1);
}
.modal-header h3 { margin: 0; }
.modal-body { padding: var(--size-5); overflow: auto; }
.modal-footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: var(--size-3);
  padding: var(--size-5);
  border-top: 1px solid var(--border-1);
  background: var(--gray-1);
}

.dialog.confirm { border-top: 4px solid var(--information); }
.dialog.danger  { border-top: 4px solid var(--error); }

.drawer {
  position: fixed;
  top: 0;
  height: 100%;
  width: 360px;
  max-width: 90vw;
  background: var(--background);
  padding: var(--size-5);
  z-index: 1000;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: var(--size-4);
}
.drawer.right { right: 0; box-shadow: -4px 0 16px rgba(0, 0, 0, 0.15); }
.drawer.left  { left:  0; box-shadow:  4px 0 16px rgba(0, 0, 0, 0.15); }

.popover {
  background: var(--background);
  border: 1px solid var(--border-2);
  border-radius: var(--border-radius-2);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  padding: var(--size-3);
  max-width: 320px;
}
.popover.context { padding: 0; }

.tooltip {
  background: var(--gray-10);
  color: var(--background);
  padding: var(--size-1) var(--size-2);
  border-radius: var(--border-radius-1);
  font-size: 0.8125rem;
  white-space: nowrap;
  pointer-events: none;
}


/* ==========================================================================
   4. TRANSIENT FEEDBACK
   ========================================================================== */

.toast {
  display: inline-flex;
  align-items: center;
  gap: var(--size-3);
  padding: var(--size-3) var(--size-4);
  background: var(--gray-10);
  color: var(--background);
  border-radius: var(--border-radius-2);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  min-width: 280px;
}
.toast.success { background: var(--success); color: #fff; }
.toast.error   { background: var(--error);   color: #fff; }
.toast.warning { background: var(--warning); color: #000; }

.toast-stack {
  position: fixed;
  bottom: var(--size-5);
  right: var(--size-5);
  display: flex;
  flex-direction: column;
  gap: var(--size-3);
  z-index: 1100;
}

.spinner {
  display: inline-block;
  width: var(--size-7);
  height: var(--size-7);
  border: 3px solid var(--gray-3);
  border-top-color: var(--active);
  border-radius: 50%;
  animation: ods-spin 0.8s linear infinite;
}
.spinner.inline {
  width: var(--size-4);
  height: var(--size-4);
  border-width: 2px;
}
.spinner.overlay {
  width: var(--size-10);
  height: var(--size-10);
  border-width: 4px;
}
@keyframes ods-spin { to { transform: rotate(360deg); } }

.skeleton {
  display: block;
  background: linear-gradient(90deg, var(--gray-2), var(--gray-3), var(--gray-2));
  background-size: 200% 100%;
  border-radius: var(--border-radius-1);
  animation: ods-shimmer 1.5s linear infinite;
}
.skeleton.text  { height: 0.875em; margin: 0.25em 0; }
.skeleton.block { height: 100px; }
@keyframes ods-shimmer {
  from { background-position: 200% 0; }
  to   { background-position: -200% 0; }
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--gray-3);
  border-radius: var(--border-radius-1);
  overflow: hidden;
}
.progress-bar > .fill {
  background: var(--active);
  height: 100%;
  width: 0%;
  transition: width 0.3s ease;
}
.progress-bar.indeterminate > .fill {
  width: 30%;
  animation: ods-progress 1.4s ease-in-out infinite;
}
@keyframes ods-progress {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(400%);  }
}

.empty-state {
  padding: var(--size-9);
  text-align: center;
  color: var(--gray-7);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--size-3);
}
.empty-state .empty-icon {
  font-size: var(--size-10);
  color: var(--gray-6);
}


/* ==========================================================================
   5. DISPLAY CHROME — badges, chips, tags, avatars, kbd, dividers
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--size-2);
  height: var(--size-6);
  border-radius: var(--size-6);
  background: var(--gray-3);
  color: var(--gray-9);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.badge.dot {
  width: 8px;
  height: 8px;
  padding: 0;
  background: var(--active);
}
.badge.count {
  min-width: var(--size-6);
  background: var(--error);
  color: #fff;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--size-2);
  padding: var(--size-1) var(--size-3);
  background: var(--gray-2);
  border: 1px solid var(--border-1);
  border-radius: var(--size-7);
  font-size: 0.875rem;
  line-height: 1.25;
  white-space: nowrap;
}
.chip.info, .chip.information {
  background: var(--information-bg);
  border-color: var(--information-bg);
  color: var(--information-color-text);
}
.chip.success    { background: var(--success-bg);    border-color: var(--success-bg);    color: var(--success-color-text); }
.chip.warning    { background: var(--warning-bg);    border-color: var(--warning-bg);    color: var(--warning-color-text); }
.chip.error,
.chip.danger     { background: var(--error-bg);      border-color: var(--error-bg);      color: var(--error-color-text); }
.chip.incomplete { background: var(--incomplete-bg); border-color: var(--incomplete-bg); color: var(--incomplete-color-text); }

.chip.removable .remove {
  cursor: pointer;
  opacity: 0.55;
  background: none;
  border: none;
  padding: 0;
  font-size: 1.1em;
  line-height: 1;
  color: inherit;
}
.chip.removable .remove:hover { opacity: 1; }

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--size-2);
  border-radius: var(--border-radius-1);
  background: var(--gray-3);
  color: var(--text-color);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.tag.material-ore        { background: color-mix(in srgb, var(--material-ore) 20%, var(--background)); color: var(--material-ore); }
.tag.material-waste      { background: color-mix(in srgb, var(--material-waste) 20%, var(--background)); color: var(--material-waste); }
.tag.material-backfill   { background: color-mix(in srgb, var(--material-backfill) 20%, var(--background)); color: var(--material-backfill); }
.tag.material-overburden { background: color-mix(in srgb, var(--material-overburden) 20%, var(--background)); color: var(--material-overburden); }
.tag.status-running  { background: color-mix(in srgb, var(--status-running) 20%, var(--background));  color: var(--status-running); }
.tag.status-queued   { background: color-mix(in srgb, var(--status-queued) 20%, var(--background));   color: var(--status-queued); }
.tag.status-paused   { background: color-mix(in srgb, var(--status-paused) 25%, var(--background));   color: var(--gray-9); }
.tag.status-archived { background: color-mix(in srgb, var(--status-archived) 20%, var(--background)); color: var(--status-archived); }

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gray-3);
  color: var(--gray-9);
  font-weight: 600;
  overflow: hidden;
  flex-shrink: 0;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar.sm { width: var(--size-7); height: var(--size-7); font-size: 0.6875rem; }
.avatar.md { width: var(--size-9); height: var(--size-9); font-size: 0.8125rem; }
.avatar.lg { width: 56px;          height: 56px;          font-size: 1.125rem; }
.avatar.initials { background: var(--active); color: #fff; }

.avatar-group { display: inline-flex; }
.avatar-group .avatar {
  border: 2px solid var(--background);
  margin-left: -8px;
}
.avatar-group .avatar:first-child { margin-left: 0; }

.kbd {
  display: inline-block;
  font-family: 'Courier New', monospace;
  font-size: 0.75rem;
  padding: 2px var(--size-2);
  border: 1px solid var(--border-2);
  border-bottom-width: 2px;
  border-radius: var(--border-radius-1);
  background: var(--gray-1);
  color: var(--gray-9);
  line-height: 1;
}

hr.divider, .divider:not(.vertical) {
  border: none;
  border-top: 1px solid var(--border-1);
  margin: var(--size-4) 0;
  height: 0;
}
.divider.vertical {
  display: inline-block;
  border: none;
  border-left: 1px solid var(--border-1);
  width: 1px;
  height: 1.25em;
  margin: 0 var(--size-2);
  vertical-align: middle;
}


/* ==========================================================================
   6. INTERACTIVE STRUCTURE — accordion, pagination, search, dropdown
   ========================================================================== */

.accordion {
  border: 1px solid var(--border-1);
  border-radius: var(--border-radius-2);
  overflow: hidden;
  background: var(--background);
}
.accordion + .accordion { margin-top: var(--size-2); }
.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--size-3) var(--size-4);
  background: var(--gray-1);
  cursor: pointer;
  font-weight: 600;
  user-select: none;
}
.accordion-header:hover { background: var(--gray-2); }
.accordion-header .chevron {
  display: inline-block;
  transition: transform 0.15s ease;
}
.accordion.open .accordion-header .chevron { transform: rotate(90deg); }
.accordion-body {
  padding: var(--size-4);
  border-top: 1px solid var(--border-1);
  display: none;
}
.accordion.open .accordion-body { display: block; }

.pagination {
  display: inline-flex;
  align-items: center;
  gap: var(--size-1);
}
.pagination button {
  min-width: var(--size-9);
  padding: var(--size-1) var(--size-2);
}
.pagination .active {
  background: var(--active);
  border-color: var(--active);
  color: #fff;
}

.search-input {
  position: relative;
  display: inline-block;
}
.search-input input[type="search"],
.search-input input[type="text"] {
  padding-left: calc(var(--size-7) + var(--size-1));
  padding-right: var(--size-8);
  width: 100%;
}
.search-input .leading,
.search-input .clear {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-7);
  pointer-events: none;
}
.search-input .leading { left: var(--size-2); }
.search-input .clear {
  right: var(--size-2);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  pointer-events: auto;
  opacity: 0.6;
}
.search-input .clear:hover { opacity: 1; }

.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--size-1));
  left: 0;
  min-width: 180px;
  z-index: 200;
  display: none;
}
.dropdown.open .dropdown-menu { display: block; }


/* --------------------------------------------------------------------------
   Multi-select dropdown — chip-based input. Selected options render as
   info chips inline; the panel below toggles options on click.
   -------------------------------------------------------------------------- */

.multiselect {
  position: relative;
  width: 100%;
  font-size: var(--size-4);
}
.multiselect-control {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--size-1);
  padding: var(--size-1) var(--size-2);
  border: 1px solid var(--gray-6);
  border-radius: var(--border-radius-1);
  background: var(--background);
  min-height: calc(var(--size-4) + var(--size-2) * 2 + 2px);
  cursor: text;
}
.multiselect-control:hover { border-color: var(--border-2); }
.multiselect.open > .multiselect-control,
.multiselect-control:focus-within {
  border-color: var(--active);
  outline: 1px solid var(--active);
}
.multiselect-control .chips {
  display: contents;
}
.multiselect-control .chip {
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 1px var(--size-2);
}
.multiselect-control .placeholder {
  flex: 1;
  color: var(--gray-7);
  padding: 0 var(--size-1);
  pointer-events: none;
  user-select: none;
}
.multiselect-control .caret {
  margin-left: auto;
  color: var(--gray-7);
  pointer-events: none;
  transition: transform 0.15s ease;
}
.multiselect.open .multiselect-control .caret { transform: rotate(180deg); }

.multiselect-dropdown {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--background);
  border: 1px solid var(--border-2);
  border-radius: var(--border-radius-2);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  max-height: 240px;
  overflow-y: auto;
  display: none;
}
.multiselect.open .multiselect-dropdown { display: block; }

.multiselect-option {
  display: flex;
  align-items: center;
  gap: var(--size-3);
  padding: var(--size-2) var(--size-3);
  cursor: pointer;
  user-select: none;
  color: var(--text-color);
}
.multiselect-option:hover { background: var(--gray-2); }
.multiselect-option.selected {
  background: var(--information-bg);
  color: var(--information-color-text);
}
.multiselect-option .check {
  color: var(--active-primary);
  font-size: var(--size-4);
  width: var(--size-4);
  height: var(--size-4);
  flex-shrink: 0;
  visibility: hidden;
}
.multiselect-option.selected .check { visibility: visible; }


/* ==========================================================================
   7. ICONS
   --------------------------------------------------------------------------
   Lightweight unicode glyph fallback. Real products would replace with
   an SVG sprite or icon font. Keeps the markup contract <i class="icon-x">.
   ========================================================================== */

[class^="icon-"], [class*=" icon-"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--size-5);
  height: var(--size-5);
  font-style: normal;
  line-height: 1;
  vertical-align: middle;
  font-family: 'Inter', sans-serif;
}

.icon-home-alt::before       { content: "\2302"; }   /* ⌂ */
.icon-angle-right::before    { content: "\203A"; }   /* › */
.icon-angle-left::before     { content: "\2039"; }   /* ‹ */
.icon-chevron-down::before   { content: "\25BE"; }   /* ▾ */
.icon-chevron-right::before  { content: "\25B8"; }   /* ▸ */
.icon-chevron-up::before     { content: "\25B4"; }   /* ▴ */
.icon-eye::before            { content: "\1F441"; }
.icon-eye-slash::before      { content: "\2015"; font-weight: 700; }
.icon-search::before         { content: "\1F50D"; }
.icon-close::before          { content: "\00D7"; font-size: 1.4em; }
.icon-plus::before           { content: "\002B"; font-weight: 600; }
.icon-minus::before          { content: "\2212"; font-weight: 600; }
.icon-check::before          { content: "\2713"; font-weight: 700; }
.icon-warning::before        { content: "\26A0"; }
.icon-info::before           { content: "\2139"; }
.icon-folder::before         { content: "\1F4C1"; }
.icon-file::before           { content: "\1F4C4"; }
.icon-settings::before       { content: "\2699"; }


/* ==========================================================================
   8. DOMAIN — layer tree, viewport (modal-space concerns)
   ========================================================================== */

.layer-tree {
  font-size: 0.875rem;
  border: 1px solid var(--border-1);
  border-radius: var(--border-radius-2);
  background: var(--background);
  overflow: auto;
}
.layer-tree-row {
  display: grid;
  grid-template-columns: var(--size-5) 1fr auto;
  align-items: center;
  gap: var(--size-2);
  padding: var(--size-1) var(--size-2);
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid transparent;
}
.layer-tree-row:hover    { background: var(--gray-2); }
.layer-tree-row.selected { background: var(--information-bg); color: var(--active-on-selected); }
.layer-tree-row.ghosted  { opacity: 0.45; pointer-events: none; }

.layer-tree-row .visibility {
  cursor: pointer;
  opacity: 0.55;
  background: none;
  border: none;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.layer-tree-row .visibility:hover { opacity: 1; }

.layer-tree-row.indent-1 { padding-left: calc(var(--size-2) + var(--size-5));     }
.layer-tree-row.indent-2 { padding-left: calc(var(--size-2) + var(--size-5) * 2); }
.layer-tree-row.indent-3 { padding-left: calc(var(--size-2) + var(--size-5) * 3); }
.layer-tree-row.indent-4 { padding-left: calc(var(--size-2) + var(--size-5) * 4); }

.viewport {
  position: relative;
  background:
    linear-gradient(45deg, var(--gray-2) 25%, transparent 25%),
    linear-gradient(-45deg, var(--gray-2) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--gray-2) 75%),
    linear-gradient(-45deg, transparent 75%, var(--gray-2) 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-color: var(--gray-1);
  border: 1px solid var(--border-2);
  border-radius: var(--border-radius-2);
  min-height: 280px;
  overflow: hidden;
}
.viewport-overlay {
  position: absolute;
  padding: var(--size-3);
  pointer-events: none;
  display: flex;
  gap: var(--size-2);
}
.viewport-overlay > * { pointer-events: auto; }
.viewport-overlay.top-left     { top: 0; left: 0; }
.viewport-overlay.top-right    { top: 0; right: 0; }
.viewport-overlay.bottom-left  { bottom: 0; left: 0; }
.viewport-overlay.bottom-right { bottom: 0; right: 0; }


/* ==========================================================================
   9. FIELD-LEVEL VALIDATION (Incomplete / Info / Warning / Error / OK)
   ========================================================================== */

.field {
  display: flex;
  flex-direction: column;
  gap: var(--size-1);
}
.field input,
.field select,
.field textarea { width: 100%; }

.field.incomplete input, .field.incomplete select, .field.incomplete textarea { border-color: var(--incomplete); }
.field.info       input, .field.info       select, .field.info       textarea { border-color: var(--information); }
.field.warning    input, .field.warning    select, .field.warning    textarea { border-color: var(--warning); }
.field.error      input, .field.error      select, .field.error      textarea { border-color: var(--error); }
.field.ok         input, .field.ok         select, .field.ok         textarea { border-color: var(--success); }

.field-message {
  font-size: 0.8125rem;
  display: flex;
  align-items: center;
  gap: var(--size-1);
}
.field.incomplete .field-message { color: var(--incomplete-color-text); }
.field.info       .field-message { color: var(--information-color-text); }
.field.warning    .field-message { color: var(--warning-color-text); }
.field.error      .field-message { color: var(--error-color-text); }
.field.ok         .field-message { color: var(--success-color-text); }

.field-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}


/* ==========================================================================
   10. DENSITY VARIANTS
   --------------------------------------------------------------------------
   Compact rebases the sub-base spacing tokens locally — children inherit.
   Use on a containing region (e.g. a <section> or .properties-panel).
   ========================================================================== */

.density-compact {
  --size-2: 0.375rem;
  --size-3: 0.5rem;
  --size-4: 0.6875rem;
  --size-5: 0.8125rem;
  font-size: 0.8125rem;
}
.density-comfortable {
  --size-3: 0.875rem;
  --size-4: 1rem;
  --size-5: 1.125rem;
}


/* ==========================================================================
   10.5 CHARTS
   --------------------------------------------------------------------------
   Structural CSS for column charts, donut charts, and legends. Colors are
   supplied by the --chart-N tokens defined in the product brand tokens
   section at the top of this file.
   ========================================================================== */

/* Shared legend */
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--size-3);
  margin-top: var(--size-4);
}
.chart-legend-item {
  display: flex;
  align-items: center;
  gap: var(--size-2);
  font-size: 0.8125rem;
  color: var(--gray-8);
}
.chart-legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: var(--border-radius-1);
  flex-shrink: 0;
}

/* Column / bar chart */
.chart-columns {
  display: flex;
  align-items: flex-end;
  gap: var(--size-3);
  height: 160px;
  padding: 0 var(--size-2);
  border-bottom: 2px solid var(--border-1);
  position: relative;
}
.chart-column-group {
  display: flex;
  align-items: flex-end;
  gap: var(--size-1);
  flex: 1;
}
.chart-col {
  flex: 1;
  border-radius: var(--border-radius-1) var(--border-radius-1) 0 0;
  transition: opacity 0.12s;
  cursor: default;
}
.chart-col:hover { opacity: 0.8; }
.chart-x-labels {
  display: flex;
  gap: var(--size-3);
  padding: var(--size-2) var(--size-2) 0;
}
.chart-x-label {
  flex: 1;
  text-align: center;
  font-size: 0.75rem;
  color: var(--gray-7);
}

/* Horizontal bar chart */
.chart-hbar { display: flex; flex-direction: column; gap: var(--size-2); }
.chart-hbar-row { display: grid; grid-template-columns: 80px 1fr 48px; align-items: center; gap: var(--size-3); }
.chart-hbar-track { background: var(--gray-2); border-radius: var(--border-radius-1); height: var(--size-4); overflow: hidden; }
.chart-hbar-fill { height: 100%; border-radius: var(--border-radius-1); transition: width 0.3s ease; }
.chart-hbar-label { font-size: 0.8125rem; color: var(--gray-7); text-align: right; white-space: nowrap; }
.chart-hbar-value { font-size: 0.8125rem; font-variant-numeric: tabular-nums; color: var(--gray-8); }


/* ==========================================================================
   11. UTILITIES
   ========================================================================== */

.tabular-nums  { font-variant-numeric: tabular-nums; }
.right-align   { text-align: right; }
.center-align  { text-align: center; }
.left-align    { text-align: left; }
.no-wrap       { white-space: nowrap; }
.scroll-y      { overflow-y: auto; }
.scroll-x      { overflow-x: auto; }

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.truncate-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}


/* ==========================================================================
   12. FILE-HANDLING UI
   ========================================================================== */

.file-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--border-1);
  border-radius: var(--border-radius-2);
  background: var(--background);
}
.file-list-item {
  display: grid;
  grid-template-columns: var(--size-5) 1fr auto auto;
  gap: var(--size-3);
  align-items: center;
  padding: var(--size-3) var(--size-4);
  border-bottom: 1px solid var(--border-1);
}
.file-list-item:last-child { border-bottom: none; }
.file-list-item:hover      { background: var(--gray-1); }
.file-list-item .name      { font-weight: 600; }
.file-list-item .meta      { color: var(--gray-7); font-size: 0.8125rem; }

.file-status {
  display: inline-flex;
  align-items: center;
  gap: var(--size-1);
  padding: 2px var(--size-2);
  border-radius: var(--border-radius-1);
  font-size: 0.75rem;
  font-weight: 600;
}
.file-status.unsaved { background: var(--warning-bg);     color: var(--warning-color-text); }
.file-status.syncing { background: var(--information-bg); color: var(--information-color-text); }
.file-status.shared  { background: var(--success-bg);     color: var(--success-color-text); }

.activity-feed { list-style: none; padding: 0; margin: 0; }
.activity-item {
  display: grid;
  grid-template-columns: var(--size-9) 1fr auto;
  gap: var(--size-3);
  padding: var(--size-3) 0;
  border-bottom: 1px solid var(--border-1);
  align-items: start;
}
.activity-item:last-child { border-bottom: none; }
.activity-item .when {
  color: var(--gray-7);
  font-size: 0.8125rem;
  white-space: nowrap;
}