/* fx7 UI styles — kiểu AutoCAD. CHỈ dùng token var (SSOT giao diện = tokens.json). Cấm hardcode màu. */
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden;
  font-family: var(--primitive-font-family-ui);
  font-size: var(--semantic-typography-uiSize);
  color: var(--semantic-color-fg-primary);
  background: var(--semantic-color-bg-canvas);
}
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: transparent; }
code { font-family: var(--primitive-font-family-mono); color: var(--semantic-color-fg-secondary); }
.muted { color: var(--semantic-color-fg-muted); }

#app { display: grid; height: 100%;
  grid-template-columns: var(--w-left, 232px) 1fr var(--w-right, 300px);
  grid-template-rows: 30px auto 1fr var(--h-cmd, 108px) 26px;
  grid-template-areas:
    "titlebar titlebar titlebar"
    "ribbon   ribbon   ribbon"
    "left     canvas   right"
    "cmdline  cmdline  cmdline"
    "status   status   status";
}
/* PROPERTIES: ẩn/hiện palette phải */
#app.hide-right { grid-template-columns: var(--w-left, 232px) 1fr 0; }
#app.hide-right #right { display: none; }
/* CLEANSCREEN (Ctrl+0): ẩn ribbon + 2 palette, tối đa vùng vẽ */
#app.cleanscreen { grid-template-columns: 0 1fr 0; grid-template-rows: 30px 0 1fr var(--h-cmd, 108px) 26px; }
#app.cleanscreen #ribbon, #app.cleanscreen #left, #app.cleanscreen #right { display: none; }

/* ───────── Title bar + Quick Access Toolbar ───────── */
#titlebar { grid-area: titlebar; display: flex; align-items: center; gap: var(--primitive-space-2);
  padding: 0 var(--primitive-space-2); background: var(--component-ribbon-tabBarBg);
  border-bottom: 1px solid var(--semantic-color-border-subtle); }
.app-menu { width: 40px; height: 24px; border-radius: var(--primitive-radius-sm);
  background: var(--primitive-color-red-6); color: #fff; font-weight: var(--primitive-font-weight-semibold); }
.app-menu:hover { filter: brightness(1.1); }
.qat { display: flex; align-items: center; gap: 2px; }
.qat-btn { width: 24px; height: 22px; border-radius: var(--primitive-radius-sm); font-size: var(--primitive-font-size-sm);
  display: flex; align-items: center; justify-content: center; color: var(--semantic-color-fg-secondary); }
.qat-btn:hover { background: var(--component-ribbon-btnHover); }
.title-doc { margin-left: var(--primitive-space-3); color: var(--semantic-color-fg-secondary); font-size: var(--primitive-font-size-xs); }
.title-spacer { flex: 1; }
.title-search { color: var(--semantic-color-fg-muted); font-size: var(--primitive-font-size-xs);
  border: 1px solid var(--semantic-color-border-subtle); border-radius: var(--primitive-radius-pill);
  padding: 2px var(--primitive-space-3); }

/* ───────── Ribbon ───────── */
#ribbon { grid-area: ribbon; background: var(--component-ribbon-bg); display: flex; flex-direction: column;
  border-bottom: 1px solid var(--semantic-color-border-default); }
.rb-tabbar { display: flex; gap: 1px; background: var(--component-ribbon-tabBarBg); padding: 0 var(--primitive-space-2);
  height: 24px; }
.rb-tab { padding: 0 var(--primitive-space-4); color: var(--component-ribbon-tabFg); font-size: var(--primitive-font-size-xs);
  border-top: 2px solid transparent; height: 24px; }
.rb-tab:hover { color: var(--component-ribbon-tabActiveFg); background: var(--component-ribbon-panelBg); }
.rb-tab.is-active { color: var(--component-ribbon-tabActiveFg); background: var(--component-ribbon-tabActiveBg);
  border-top-color: var(--component-ribbon-tabUnderline); }
.rb-strip { display: flex; align-items: stretch; gap: 0; padding: var(--primitive-space-1) var(--primitive-space-1) 0;
  height: 100px; overflow-x: auto; overflow-y: hidden; }
.rb-strip::-webkit-scrollbar { height: 6px; }
.rb-strip::-webkit-scrollbar-thumb { background: var(--semantic-color-border-default); border-radius: 3px; }
.rb-sep { width: 1px; background: var(--component-ribbon-sep); margin: var(--primitive-space-2) 0; align-self: stretch; }

.rb-panel { display: flex; flex-direction: column; min-width: max-content; }
.rb-panel-body { flex: 1; display: flex; align-items: flex-start; gap: var(--primitive-space-1);
  padding: var(--primitive-space-2) var(--primitive-space-2) 0; }
.rb-panel-title { text-align: center; font-size: 10px; color: var(--component-ribbon-panelTitleFg);
  background: var(--component-ribbon-panelTitleBg); padding: 2px 0; margin-top: auto; letter-spacing: .3px; }
.rb-col-lg { display: flex; gap: var(--primitive-space-1); }
.rb-grid-sm { display: grid; grid-auto-flow: column; grid-template-rows: repeat(3, 1fr); gap: 2px; }

.rb-btn { display: flex; align-items: center; color: var(--semantic-color-fg-secondary);
  border-radius: var(--primitive-radius-sm); }
.rb-btn:hover { background: var(--component-ribbon-btnHover); color: var(--semantic-color-fg-primary); }
.rb-btn:active { background: var(--component-ribbon-btnActive); }
.rb-btn .rb-ico { display: flex; align-items: center; justify-content: center; }
.rb-lg { flex-direction: column; width: 60px; padding: var(--primitive-space-2) 2px; gap: var(--primitive-space-1); }
.rb-lg .rb-ico svg { width: 28px; height: 28px; }
.rb-lg .rb-lbl { font-size: 10px; text-align: center; line-height: 1.1; }
.rb-sm { flex-direction: row; gap: var(--primitive-space-1); padding: 2px var(--primitive-space-1); height: 22px; }
.rb-sm .rb-ico svg { width: 16px; height: 16px; }
.rb-sm .rb-lbl { font-size: 11px; white-space: nowrap; }

/* ───────── Palettes (Layers / Properties) ───────── */
.palette { background: var(--component-panel-bg); display: flex; flex-direction: column; overflow: hidden;
  border: 1px solid var(--semantic-color-border-subtle); }
#left { grid-area: left; border-left: 0; }
#right { grid-area: right; border-right: 0; }
.palette-title { padding: var(--primitive-space-2) var(--primitive-space-3); font-size: var(--primitive-font-size-xs);
  text-transform: uppercase; letter-spacing: .8px; color: var(--semantic-color-fg-muted);
  background: var(--component-ribbon-tabBarBg); border-bottom: 1px solid var(--semantic-color-border-subtle); }
.palette-body { flex: 1; overflow: auto; padding: var(--semantic-space-panelPadding); }

/* ───────── Canvas + overlays ───────── */
#canvas-wrap { grid-area: canvas; position: relative; overflow: hidden;
  background: var(--semantic-color-bg-canvas); cursor: none; }
#viewport { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

/* Model/Layout tabs (fx7) — góc dưới-trái vùng vẽ, kiểu AutoCAD */
#layout-tabs { position: absolute; left: 8px; bottom: 6px; display: flex; gap: 2px; z-index: var(--primitive-zindex-markers); pointer-events: auto; }
.lt-tab { font: 11px/1 var(--primitive-font-family-ui, sans-serif); color: var(--semantic-color-text-secondary, #9aa4b2);
  background: var(--semantic-color-bg-surface, #1b1e24); border: 1px solid var(--semantic-color-border-subtle, #2a2f37);
  border-bottom: none; border-radius: 4px 4px 0 0; padding: 4px 10px; cursor: pointer; }
.lt-tab:hover { color: var(--semantic-color-text-primary, #e6eaf0); }
.lt-tab.active { color: var(--semantic-color-text-primary, #fff); background: var(--semantic-color-bg-canvas, #08090b); border-color: var(--semantic-color-accent, #4a90d9); }

/* Crosshair (fx7.7.1) */
.ov-cross { position: absolute; inset: 0; pointer-events: none; z-index: var(--primitive-zindex-markers); }
.ov-cross[hidden] { display: none; }
.ov-cross-h { position: absolute; left: 0; width: 100%; top: var(--y); height: 1px;
  background: var(--component-crosshair-color); opacity: .6; }
.ov-cross-v { position: absolute; top: 0; height: 100%; left: var(--x); width: 1px;
  background: var(--component-crosshair-color); opacity: .6; }
.ov-pickbox { position: absolute; left: var(--x); top: var(--y); width: 12px; height: 12px;
  transform: translate(-50%, -50%); border: 1px solid var(--component-crosshair-pickbox); }
/* con trỏ theo ngữ cảnh: ẩn pickbox khi đang chỉ điểm/khoảng/góc */
.ov-cross.no-pickbox .ov-pickbox { display: none; }

/* Dynamic input (fx7.7.1b) — hộp nhắc bám con trỏ kiểu AutoCAD DYN */
.ov-dyn { position: absolute; z-index: var(--primitive-zindex-markers); pointer-events: none;
  display: flex; flex-direction: column; gap: 2px; padding: 3px 7px;
  font-family: var(--primitive-font-family-mono); font-size: 11px; line-height: 1.4;
  color: var(--component-commandLine-promptFg); background: var(--component-commandLine-inputBg);
  border: 1px solid var(--component-commandLine-border); border-radius: 3px; white-space: nowrap; }
.ov-dyn[hidden] { display: none; }
.ov-dyn-coord { color: var(--semantic-color-fg-secondary); }
.ov-dyn-fields { display: flex; align-items: center; gap: 3px; pointer-events: auto; }
.ov-dyn-sep { color: var(--semantic-color-fg-muted); }
.ov-dyn-f { width: 60px; padding: 1px 4px; font-family: var(--primitive-font-family-mono); font-size: 11px;
  color: var(--component-commandLine-inputFg, #e6e6e6); background: var(--semantic-color-bg-canvas, #0c0d10);
  border: 1px solid var(--component-commandLine-border); border-radius: 2px; outline: none; }
.ov-dyn-f:focus { border-color: var(--semantic-color-cad-selection, #5b9bd5); }

/* Context menu chuột phải (fx7.7.6) */
.ov-menu { position: absolute; z-index: var(--primitive-zindex-markers); min-width: 150px;
  background: var(--component-panel-bg); border: 1px solid var(--semantic-color-border-default);
  border-radius: var(--primitive-radius-sm); box-shadow: 0 6px 20px rgba(0,0,0,.4); padding: 3px; }
.ov-menu[hidden] { display: none; }
.ov-menu-item { padding: 4px 12px; font-size: var(--primitive-font-size-xs); color: var(--semantic-color-fg-secondary);
  border-radius: var(--primitive-radius-sm); cursor: pointer; }
.ov-menu-item:hover { background: var(--component-ribbon-btnHover); color: var(--semantic-color-fg-primary); }
.ov-menu-sep { height: 1px; margin: 3px 6px; background: var(--semantic-color-border-subtle); }

/* UCS icon (fx7.7.2) */
.ov-ucs { position: absolute; left: 12px; bottom: 12px; pointer-events: none; opacity: .95; }

/* ViewCube (fx7.7.3) */
.ov-viewcube { position: absolute; right: 14px; top: 12px; cursor: pointer; }
.vc-top { fill: var(--component-viewCube-face); stroke: var(--component-viewCube-edge); stroke-width: 1; }
.vc-left { fill: var(--component-viewCube-face); filter: brightness(.85); stroke: var(--component-viewCube-edge); stroke-width: 1; }
.vc-right { fill: var(--component-viewCube-face); filter: brightness(.7); stroke: var(--component-viewCube-edge); stroke-width: 1; }
.ov-viewcube:hover .vc-top { fill: var(--component-viewCube-faceHover); }
.vc-lbl { fill: var(--component-viewCube-fg); font-size: 9px; font-family: var(--primitive-font-family-ui); }
.vc-compass { position: absolute; top: -2px; left: 50%; transform: translateX(-50%);
  color: var(--semantic-color-fg-muted); font-size: 9px; }

/* Navigation bar (fx7.7.4) */
.ov-navbar { position: absolute; right: 16px; top: 100px; display: flex; flex-direction: column; gap: 1px;
  background: var(--component-panel-bg); border: 1px solid var(--semantic-color-border-default);
  border-radius: var(--primitive-radius-pill); padding: var(--primitive-space-1) 2px; }
.ov-nav-btn { width: 26px; height: 26px; display: flex; align-items: center; justify-content: center;
  color: var(--semantic-color-fg-secondary); border-radius: var(--primitive-radius-pill); }
.ov-nav-btn:hover { background: var(--component-ribbon-btnHover); color: var(--semantic-color-fg-primary); }

/* Model / Layout tabs (fx7.7.5) */
.ov-modeltabs { position: absolute; left: 0; bottom: 0; display: flex; align-items: flex-end;
  background: var(--component-modelTab-bg); border-top: 1px solid var(--semantic-color-border-subtle);
  height: 24px; padding-left: var(--primitive-space-2); }
.ov-mtab { height: 22px; padding: 0 var(--primitive-space-3); font-size: var(--primitive-font-size-xs);
  color: var(--component-modelTab-tabFg); background: var(--component-modelTab-tabBg);
  border: 1px solid var(--semantic-color-border-subtle); border-bottom: 0; margin-right: 2px;
  border-radius: var(--primitive-radius-sm) var(--primitive-radius-sm) 0 0; }
.ov-mtab.is-active { color: var(--component-modelTab-tabActiveFg); background: var(--component-modelTab-tabActiveBg); }
.ov-mtab-add { color: var(--semantic-color-fg-muted); }

/* ───────── Layers palette ───────── */
.layer-row { display: flex; align-items: center; gap: var(--primitive-space-1);
  padding: var(--primitive-space-1) var(--primitive-space-2); border-radius: var(--primitive-radius-sm); }
.layer-row:hover { background: var(--semantic-color-bg-hover); }
.layer-row.is-current { background: var(--semantic-color-accent-muted); }
.layer-row .ico { width: 20px; text-align: center; opacity: .85; }
.layer-row .swatch { width: 12px; height: 12px; border-radius: 2px; border: 1px solid var(--semantic-color-border-default); display: block; }
.layer-row .swatch-wrap { position: relative; width: 12px; height: 12px; cursor: pointer; }
.layer-row .swatch-inp { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; border: 0; padding: 0; cursor: pointer; }
.layer-name { margin-left: var(--primitive-space-1); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.layer-row .layer-lt, .layer-row .layer-lw { font-size: 11px; background: var(--semantic-color-bg-canvas); color: inherit;
  border: 1px solid var(--semantic-color-border-default); border-radius: var(--primitive-radius-sm); padding: 0 2px; max-width: 84px; }
.layer-row .layer-lw { max-width: 60px; }

/* ───────── Properties palette ───────── */
.prop-head { margin-bottom: var(--primitive-space-3); color: var(--semantic-color-fg-secondary); }
.prop { display: flex; align-items: center; justify-content: space-between; gap: var(--primitive-space-2);
  margin-bottom: var(--primitive-space-2); }
.prop span { color: var(--component-inspectorField-labelColor); font-size: var(--semantic-typography-labelSize); }
.prop input { width: 55%; height: var(--component-inspectorField-height); padding: 0 var(--primitive-space-2);
  background: var(--component-inspectorField-bg); color: var(--semantic-color-fg-primary);
  border: 1px solid var(--component-inspectorField-border); border-radius: var(--primitive-radius-sm); }
.prop input:focus { outline: 2px solid var(--semantic-color-focusRing); outline-offset: -1px; }

/* ───────── Command line (fx7.6) ───────── */
#cmdline { grid-area: cmdline; display: flex; flex-direction: column;
  background: var(--component-commandLine-bg); border-top: 1px solid var(--component-commandLine-border); }
.cl-history { flex: 1; overflow-y: auto; padding: var(--primitive-space-1) var(--primitive-space-3);
  font-family: var(--primitive-font-family-mono); font-size: var(--primitive-font-size-xs);
  color: var(--semantic-color-fg-secondary); line-height: 1.5; }
.cl-line { white-space: pre-wrap; }
.cl-cmd { color: var(--semantic-color-fg-primary); }
.cl-muted { color: var(--semantic-color-fg-muted); }
.cl-error { color: var(--semantic-color-state-danger); }
.cl-warn { color: var(--semantic-color-state-warn); }
.cl-info { color: var(--semantic-color-accent-default); }
.cl-inputrow { display: flex; align-items: center; gap: var(--primitive-space-2);
  padding: var(--primitive-space-1) var(--primitive-space-3); border-top: 1px solid var(--semantic-color-border-subtle);
  background: var(--component-commandLine-inputBg); }
.cl-prompt { color: var(--component-commandLine-promptFg); font-family: var(--primitive-font-family-mono);
  font-size: var(--semantic-typography-cmdSize); white-space: nowrap; }
.cl-inputwrap { position: relative; flex: 1; }
.cl-input { width: 100%; height: 22px; background: transparent; color: var(--semantic-color-fg-primary);
  border: 0; outline: 0; font-family: var(--primitive-font-family-mono); font-size: var(--semantic-typography-cmdSize);
  text-transform: uppercase; }
.cl-auto { position: absolute; left: 0; bottom: 26px; min-width: 240px; z-index: var(--primitive-zindex-palette);
  background: var(--component-commandPalette-bg); border: 1px solid var(--semantic-color-border-default);
  border-radius: var(--primitive-radius-sm); box-shadow: var(--component-commandPalette-shadow); overflow: hidden; }
.cl-opt { display: flex; gap: var(--primitive-space-2); padding: var(--primitive-space-1) var(--primitive-space-3);
  font-family: var(--primitive-font-family-mono); font-size: var(--primitive-font-size-xs); }
.cl-opt:hover { background: var(--semantic-color-bg-hover); }
.cl-opt b { color: var(--semantic-color-accent-default); }
.cl-opt span { color: var(--semantic-color-fg-muted); }

/* ───────── Status bar (fx7.3) ───────── */
#status { grid-area: status; display: flex; align-items: center; gap: var(--primitive-space-2);
  padding: 0 var(--primitive-space-3); background: var(--component-statusBar-bg);
  color: var(--component-statusBar-fg); font-size: var(--primitive-font-size-xs);
  border-top: 1px solid var(--semantic-color-border-subtle); }
.sb-coords { font-family: var(--primitive-font-family-mono); min-width: 190px; }
.sb-sep { width: 1px; height: 16px; background: var(--semantic-color-border-default); }
.sb-toggles { display: flex; gap: 1px; }
.sb-tgl { width: 26px; height: 22px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--primitive-radius-sm); color: var(--semantic-color-fg-muted); }
.sb-tgl:hover { background: var(--component-statusBar-iconHover); color: var(--semantic-color-fg-secondary); }
.sb-tgl.on { color: var(--component-statusBar-toggleOn); }
.sb-spacer { flex: 1; }
.sb-scale, .sb-ws { padding: 0 var(--primitive-space-2); color: var(--semantic-color-fg-secondary); }
.sb-ver { font-family: var(--primitive-font-family-mono); color: var(--semantic-color-fg-muted); }

/* ───────── Toast ───────── */
#toasts { position: fixed; right: var(--primitive-space-5); bottom: 60px;
  display: flex; flex-direction: column; gap: var(--primitive-space-2); z-index: var(--primitive-zindex-toast); }
.toast { padding: var(--primitive-space-2) var(--primitive-space-4); border-radius: var(--component-toast-radius);
  background: var(--component-toast-bg); box-shadow: var(--component-toast-shadow);
  border-left: 3px solid var(--semantic-color-state-info); opacity: 1; transition: opacity var(--primitive-duration-standard); }
.toast-success { border-left-color: var(--semantic-color-state-ok); }
.toast-warn { border-left-color: var(--semantic-color-state-warn); }
.toast-error { border-left-color: var(--semantic-color-state-danger); }
.toast.out { opacity: 0; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }