/* DXF DWG Viewer — AutoCAD-style dark workspace */
:root {
  --bg: #2b313a;
  --bg2: #333a45;
  --bg3: #3b4453;
  --panel: #3b4453;
  --panel-title: #2e3542;
  --border: #1d2128;
  --border2: #4a5466;
  --text: #e6e9ee;
  --text2: #aeb6c3;
  --text3: #7f8a9b;
  --accent: #0696d7;
  --accent2: #1fb0f0;
  --hover: #48536a;
  --active: #0b6ea0;
  --canvas: #212830;
  --danger: #e2574c;
  --ok: #3fbf7f;
  --cmd-bg: rgba(38, 44, 53, 0.92);
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  --mono: Consolas, "Cascadia Mono", "Courier New", monospace;
}
body.light {
  --bg: #e9ecf0; --bg2: #f3f5f8; --bg3: #f7f8fa; --panel: #f5f6f8; --panel-title: #e3e7ec; --border: #c2c8d0;
  --border2: #cfd5dd; --text: #1d232b; --text2: #4b5563; --text3: #7a8494; --hover: #dde3ea; --active: #cde7f6; --cmd-bg: rgba(250, 251, 252, 0.95);
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--bg); color: var(--text); font: 12px/1.35 var(--font); }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
input, select { font: inherit; color: var(--text); }
.hidden { display: none !important; }
svg.ic { width: 16px; height: 16px; flex: none; stroke: currentColor; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

#app { display: flex; flex-direction: column; height: 100%; }

/* ---------------------------------------------------------------- title bar */
#titlebar { height: 34px; display: flex; align-items: center; background: var(--bg); border-bottom: 1px solid var(--border); padding-right: 8px; flex: none; }
#appbtn { width: 46px; height: 34px; display: flex; align-items: center; justify-content: center; }
#appbtn:hover, #appbtn.open { background: var(--hover); }
.logo { display: inline-flex; align-items: center; justify-content: center; width: 26px; height: 26px; border-radius: 4px; background: linear-gradient(135deg, #0e8fd0, #075f8f); color: #fff; font-weight: 700; font-size: 12px; letter-spacing: .5px; box-shadow: inset 0 0 0 1px rgba(255,255,255,.25); }
.logo.big { width: 64px; height: 64px; font-size: 26px; border-radius: 10px; }
#qat { display: flex; align-items: center; gap: 2px; padding: 0 6px; }
#qat button { width: 26px; height: 26px; border-radius: 3px; display: flex; align-items: center; justify-content: center; color: var(--text2); }
#qat button:hover { background: var(--hover); color: var(--text); }
.qat-sep { width: 1px; height: 18px; background: var(--border2); margin: 0 4px; }
#doc-title { flex: 1; text-align: center; color: var(--text2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; padding: 0 12px; }
#doc-title b { color: var(--text); font-weight: 600; }
#title-search { display: flex; align-items: center; gap: 6px; background: var(--bg2); border: 1px solid var(--border2); border-radius: 3px; padding: 0 8px; height: 24px; width: 230px; color: var(--text3); }
#title-search input { flex: 1; background: none; border: 0; outline: none; min-width: 0; }
.tb-install { display: flex; align-items: center; gap: 6px; height: 24px; padding: 0 10px 0 8px; margin-left: 8px; border-radius: 3px;
  background: var(--accent); color: #fff; font-weight: 600; white-space: nowrap; }
.tb-install:hover { background: var(--accent2); }
.start-btn.install { border-color: var(--accent); color: var(--accent2); }
.tb-btn { width: 28px; height: 26px; margin-left: 6px; border-radius: 3px; display: flex; align-items: center; justify-content: center; color: var(--text2); }
.tb-btn:hover { background: var(--hover); color: var(--text); }
.tb-btn.on, .sb-btn.on[data-cmd=FULLSCREEN] { color: var(--accent2); }

/* ---------------------------------------------------------------- clean screen / full screen */
body.clean-screen #titlebar, body.clean-screen #ribbon-tabs, body.clean-screen #ribbon,
body.clean-screen #doc-tabs, body.clean-screen #palettes { display: none !important; }
#screen-bar { position: absolute; top: 6px; left: 50%; transform: translateX(-50%); display: none; gap: 2px; z-index: 4;
  background: rgba(43, 49, 58, .9); border: 1px solid var(--border); border-radius: 4px; padding: 2px; opacity: .45; transition: opacity .2s; }
body.clean-screen #screen-bar { display: flex; }
#screen-bar:hover { opacity: 1; }
#screen-bar button { height: 26px; padding: 0 10px 0 6px; display: flex; align-items: center; gap: 6px; color: #d6dce6; border-radius: 3px; white-space: nowrap; }
#screen-bar button:hover { background: var(--active); }
#screen-bar button.on .lbl::before { content: 'Exit '; }

/* ---------------------------------------------------------------- app menu */
.popup { position: fixed; z-index: 50; background: var(--bg2); border: 1px solid var(--border); box-shadow: 0 8px 28px rgba(0,0,0,.45); }
#appmenu { top: 34px; left: 0; display: flex; min-width: 560px; }
.appmenu-left { width: 210px; padding: 6px 0; border-right: 1px solid var(--border); background: var(--bg3); }
.appmenu-left button { display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 16px; text-align: left; font-size: 13px; }
.appmenu-left button:hover { background: var(--hover); }
.appmenu-right { flex: 1; padding: 10px 14px; min-height: 260px; }
.appmenu-title { font-weight: 600; color: var(--text2); border-bottom: 1px solid var(--border2); padding-bottom: 6px; margin-bottom: 6px; }
#appmenu-recent button { display: block; width: 100%; text-align: left; padding: 6px 8px; border-radius: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#appmenu-recent button:hover { background: var(--hover); }
#appmenu-recent small { color: var(--text3); margin-left: 6px; }

/* ---------------------------------------------------------------- ribbon */
#ribbon-tabs { display: flex; align-items: flex-end; height: 26px; background: var(--bg); padding-left: 8px; flex: none; }
.rtab { padding: 4px 14px; height: 24px; color: var(--text2); border: 1px solid transparent; border-bottom: 0; border-radius: 3px 3px 0 0; }
.rtab:hover { color: var(--text); }
.rtab.active { background: var(--panel); color: var(--text); border-color: var(--border2); }
#ribbon-toggle { margin-left: 6px; width: 22px; height: 22px; display: flex; align-items: center; justify-content: center; color: var(--text3); }
#ribbon { background: var(--panel); border-top: 1px solid var(--border2); border-bottom: 1px solid var(--border); flex: none; height: 96px; overflow: hidden; }
#ribbon.min { height: 0; border: 0; }
.rpage { display: none; height: 100%; }
.rpage.active { display: flex; }
.rpanel { display: flex; flex-direction: column; border-right: 1px solid var(--border2); }
.rbody { flex: 1; display: flex; align-items: stretch; padding: 3px 4px; gap: 2px; }
.rtitle { height: 18px; line-height: 18px; text-align: center; color: var(--text2); background: var(--panel-title); font-size: 11px; padding: 0 8px; white-space: nowrap; }
.rbody .col { display: flex; flex-direction: column; justify-content: space-around; gap: 1px; }
.rbody .row { display: flex; gap: 1px; }
button.big { display: flex; flex-direction: column; align-items: center; justify-content: flex-start; gap: 3px; min-width: 52px; padding: 4px 6px; border-radius: 3px; border: 1px solid transparent; text-align: center; line-height: 1.15; font-size: 11.5px; }
button.big svg.ic { width: 30px; height: 30px; stroke-width: 1.3; margin-top: 2px; }
button.small { display: flex; align-items: center; gap: 6px; padding: 2px 8px 2px 4px; height: 22px; border-radius: 3px; border: 1px solid transparent; white-space: nowrap; font-size: 11.5px; }
button.small.icon-only { padding: 2px 3px; }
button.big:hover, button.small:hover { background: var(--hover); border-color: var(--border2); }
button.toggle.on { background: var(--active); border-color: var(--accent); }
button:disabled { opacity: .4; cursor: default; }
.layer-combo { display: flex; align-items: center; gap: 4px; background: var(--bg2); border: 1px solid var(--border2); height: 24px; padding: 0 4px; width: 210px; border-radius: 2px; }
.layer-combo .swatch { width: 12px; height: 12px; border: 1px solid #000; flex: none; }
.layer-combo select { flex: 1; background: transparent; border: 0; outline: none; min-width: 0; }
.layer-combo select option { background: var(--bg2); }

/* ---------------------------------------------------------------- doc tabs */
#doc-tabs { display: flex; align-items: flex-end; height: 28px; background: var(--bg); padding: 0 6px; gap: 1px; flex: none; border-bottom: 1px solid var(--border); }
#dtabs-list { display: flex; gap: 1px; overflow-x: auto; scrollbar-width: none; }
.dtab { display: flex; align-items: center; gap: 6px; height: 26px; padding: 0 10px; background: var(--bg2); color: var(--text2); border-radius: 3px 3px 0 0; white-space: nowrap; max-width: 260px; }
.dtab span.name { overflow: hidden; text-overflow: ellipsis; }
.dtab:hover { color: var(--text); background: var(--hover); }
.dtab.active { background: var(--canvas); color: var(--text); box-shadow: inset 0 2px 0 var(--accent); }
.dtab .x { width: 16px; height: 16px; display: flex; align-items: center; justify-content: center; border-radius: 2px; color: var(--text3); }
.dtab .x:hover { background: var(--danger); color: #fff; }
.dtab .x svg.ic { width: 10px; height: 10px; stroke-width: 2.2; }
.dtab-add { width: 26px; height: 26px; color: var(--text2); font-size: 16px; border-radius: 3px; }
.dtab-add:hover { background: var(--hover); }

/* ---------------------------------------------------------------- workspace */
#workspace { flex: 1; display: flex; min-height: 0; position: relative; }
#canvas-wrap { flex: 1; position: relative; overflow: hidden; background: var(--canvas); }
#cv, #overlay { position: absolute; left: 0; top: 0; }
#overlay { cursor: none; }
#overlay.pan { cursor: grab; }
#overlay.panning { cursor: grabbing; }
#overlay.busy { cursor: progress; }
#vp-controls { position: absolute; left: 8px; top: 6px; color: #c8d0dc; font-size: 12px; display: flex; gap: 2px; pointer-events: none; text-shadow: 0 1px 2px #000; }
#ucsicon { position: absolute; left: 6px; bottom: 6px; pointer-events: none; }

/* ViewCube */
#viewcube { position: absolute; right: 18px; top: 14px; width: 130px; height: 130px; user-select: none; }
.vc-ring { position: absolute; inset: 14px; border-radius: 50%; border: 9px solid rgba(160,170,185,.25); transform: rotateX(60deg); }
.vc-ring span { position: absolute; font-size: 10px; color: #c8d0dc; font-weight: 600; transform: rotateX(-60deg); }
.vc-ring .n { top: -16px; left: 50%; margin-left: -4px; }
.vc-ring .s { bottom: -16px; left: 50%; margin-left: -4px; }
.vc-ring .e { right: -15px; top: 50%; margin-top: -7px; }
.vc-ring .w { left: -17px; top: 50%; margin-top: -7px; }
.vc-scene { position: absolute; left: 35px; top: 35px; width: 60px; height: 60px; perspective: 400px; }
.vc-cube { width: 60px; height: 60px; position: relative; transform-style: preserve-3d; transition: transform .35s ease; }
.vc-face { position: absolute; width: 60px; height: 60px; display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 700; color: #3b4453; background: rgba(226,231,238,.93); border: 1px solid #8995a6; cursor: pointer; backface-visibility: hidden; }
.vc-face:hover { background: #9fd4f2; }
.vc-face.top { transform: translateZ(30px); }
.vc-face.bottom { transform: rotateY(180deg) translateZ(30px); }
.vc-face.front { transform: rotateX(-90deg) translateZ(30px); }
.vc-face.back { transform: rotateX(90deg) rotateZ(180deg) translateZ(30px); }
.vc-face.right { transform: rotateY(90deg) rotateZ(90deg) translateZ(30px); }
.vc-face.left { transform: rotateY(-90deg) rotateZ(-90deg) translateZ(30px); }
.vc-home { position: absolute; left: 0; top: 0; width: 22px; height: 22px; color: #c8d0dc; display: flex; align-items: center; justify-content: center; border-radius: 3px; }
.vc-home:hover { background: rgba(255,255,255,.12); }
.vc-corners button { position: absolute; width: 12px; height: 12px; border-radius: 50%; background: rgba(200,210,225,.35); }
.vc-corners button:hover { background: #9fd4f2; }
.vc-corners .nw { left: 24px; top: 24px; } .vc-corners .ne { right: 24px; top: 24px; }
.vc-corners .sw { left: 24px; bottom: 24px; } .vc-corners .se { right: 24px; bottom: 24px; }

/* Navigation bar */
#navbar { position: absolute; right: 8px; top: 160px; display: flex; flex-direction: column; gap: 1px; background: rgba(59,68,83,.85); border: 1px solid var(--border); border-radius: 3px; padding: 2px; }
#navbar button { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; color: #d6dce6; border-radius: 2px; }
#navbar button:hover, #navbar button.on { background: var(--active); }

/* Start page */
#start-page { position: absolute; inset: 0; overflow: auto; background: radial-gradient(1200px 600px at 20% 0%, #2f3a4b 0%, var(--canvas) 60%); z-index: 3; }
body.light #start-page { background: radial-gradient(1200px 600px at 20% 0%, #ffffff 0%, #e6eaef 60%); }
.start-inner { max-width: 1080px; margin: 0 auto; padding: 40px 32px; }
.start-brand { display: flex; align-items: center; gap: 18px; margin-bottom: 30px; }
.start-brand h1 { margin: 0; font-size: 28px; font-weight: 300; letter-spacing: .3px; }
.start-brand p { margin: 4px 0 0; color: var(--text2); font-size: 13px; }
.start-cols { display: grid; grid-template-columns: 320px 1fr; gap: 28px; }
.start-actions { display: flex; flex-direction: column; gap: 10px; }
.start-btn { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 4px; background: var(--bg3); border: 1px solid var(--border2); font-size: 13px; }
.start-btn:hover { background: var(--hover); }
.start-btn.primary { background: var(--accent); border-color: var(--accent2); color: #fff; }
.start-btn.primary:hover { background: var(--accent2); }
#dropzone { margin-top: 6px; border: 2px dashed var(--border2); border-radius: 6px; padding: 26px 14px; text-align: center; color: var(--text2); display: flex; flex-direction: column; align-items: center; gap: 6px; }
#dropzone svg.ic { width: 34px; height: 34px; stroke-width: 1.2; }
#dropzone small { color: var(--text3); }
body.dragging #dropzone, body.dragging #canvas-wrap { outline: 2px solid var(--accent); outline-offset: -2px; }
.start-recent-head { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border2); margin-bottom: 10px; }
.start-recent h2 { font-size: 15px; font-weight: 400; margin: 0 0 6px; }
.linkbtn { color: var(--accent2); }
#recent-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; }
#recent-list .empty { color: var(--text3); padding: 20px 0; }
.recent-card { background: var(--bg3); border: 1px solid var(--border2); border-radius: 4px; overflow: hidden; text-align: left; display: flex; flex-direction: column; }
.recent-card:hover { border-color: var(--accent); }
.recent-card .thumb { height: 120px; background: #1b2027 center/contain no-repeat; border-bottom: 1px solid var(--border); }
body.light .recent-card .thumb { background-color: #fff; }
.recent-card .meta { padding: 6px 8px; }
.recent-card .meta b { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 600; }
.recent-card .meta small { color: var(--text3); }

/* Loading + toast */
#loading { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; background: rgba(20,24,30,.55); z-index: 6; color: #fff; }
.spinner { width: 42px; height: 42px; border-radius: 50%; border: 4px solid rgba(255,255,255,.2); border-top-color: var(--accent2); animation: spin .9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
#toast { position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); background: rgba(20,24,30,.92); color: #fff; padding: 8px 14px; border-radius: 4px; border: 1px solid var(--border2); z-index: 8; max-width: 70%; }
#toast.error { border-color: var(--danger); }

/* ---------------------------------------------------------------- palettes */
#palettes { width: 360px; display: flex; flex-direction: column; background: var(--bg2); border-left: 1px solid var(--border); position: relative; min-width: 240px; max-width: 70vw; }
#pal-resize { position: absolute; left: -3px; top: 0; bottom: 0; width: 6px; cursor: ew-resize; z-index: 2; }
.pal-tabs { display: flex; background: var(--bg); border-bottom: 1px solid var(--border); height: 28px; flex: none; }
.ptab { padding: 0 12px; color: var(--text2); border-right: 1px solid var(--border); }
.ptab.active { background: var(--bg2); color: var(--text); box-shadow: inset 0 2px 0 var(--accent); }
.pal-close { margin-left: auto; width: 28px; display: flex; align-items: center; justify-content: center; color: var(--text3); }
.pal-close:hover { color: var(--text); }
.pal-page { display: none; flex: 1; flex-direction: column; min-height: 0; }
.pal-page.active { display: flex; }
.pal-toolbar { display: flex; gap: 2px; padding: 5px; border-bottom: 1px solid var(--border); flex: none; }
.pal-toolbar input { flex: 1; background: var(--bg); border: 1px solid var(--border2); border-radius: 2px; padding: 3px 6px; outline: none; min-width: 0; }
.pal-toolbar button { width: 26px; height: 24px; display: flex; align-items: center; justify-content: center; border-radius: 2px; color: var(--text2); }
.pal-toolbar button:hover { background: var(--hover); color: var(--text); }
.table-wrap { flex: 1; overflow: auto; }
#layer-table { width: 100%; border-collapse: collapse; white-space: nowrap; }
#layer-table th { position: sticky; top: 0; background: var(--bg3); text-align: left; font-weight: 600; padding: 4px 6px; border-bottom: 1px solid var(--border); border-right: 1px solid var(--border); color: var(--text2); z-index: 1; }
#layer-table td { padding: 2px 6px; border-bottom: 1px solid rgba(0,0,0,.18); }
#layer-table tr:hover td { background: var(--hover); }
#layer-table tr.sel td { background: var(--active); }
#layer-table td.name { max-width: 160px; overflow: hidden; text-overflow: ellipsis; }
#layer-table td.c { text-align: center; }
#layer-table td button { width: 22px; height: 20px; display: inline-flex; align-items: center; justify-content: center; border-radius: 2px; }
#layer-table td button:hover { background: rgba(255,255,255,.12); }
#layer-table .bulb.on { color: #ffd84a; } #layer-table .bulb.off { color: #5d6778; }
#layer-table .frz.thawed { color: #ffc44a; } #layer-table .frz.frozen { color: #7fd0ff; }
#layer-table .lck.locked { color: #ffb04a; } #layer-table .lck { color: #7f8a9b; }
#layer-table .sw { display: inline-block; width: 12px; height: 12px; border: 1px solid #000; vertical-align: -2px; margin-right: 5px; }
#layer-table .cur { color: var(--ok); }
.pal-foot { flex: none; padding: 4px 8px; color: var(--text3); border-top: 1px solid var(--border); }
.props-head { padding: 6px; border-bottom: 1px solid var(--border); flex: none; }
.props-head select { width: 100%; background: var(--bg); border: 1px solid var(--border2); padding: 3px; }
.props-body { flex: 1; overflow: auto; }
.props-body .empty, .list-body .empty { color: var(--text3); padding: 16px; text-align: center; }
.pgroup { border-bottom: 1px solid var(--border); }
.pgroup-h { background: var(--bg3); padding: 4px 8px; font-weight: 600; color: var(--text2); cursor: pointer; user-select: none; }
.pgroup-h::before { content: '▾ '; color: var(--text3); }
.pgroup.collapsed .pgroup-h::before { content: '▸ '; }
.pgroup.collapsed .prow { display: none; }
.prow { display: grid; grid-template-columns: 42% 58%; border-top: 1px solid rgba(0,0,0,.18); }
.prow > div { padding: 3px 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.prow > div:first-child { color: var(--text2); border-right: 1px solid rgba(0,0,0,.18); }
.prow > div:last-child { user-select: text; }
.prow > div.wrap { white-space: pre-wrap; word-break: break-word; }
.list-body { flex: 1; overflow: auto; }
.blk { display: flex; align-items: center; gap: 8px; padding: 5px 10px; border-bottom: 1px solid rgba(0,0,0,.18); cursor: pointer; }
.blk:hover { background: var(--hover); }
.blk .bn { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.blk small { color: var(--text3); }
.tag { font-size: 10px; padding: 0 5px; border-radius: 8px; background: var(--bg); color: var(--text2); border: 1px solid var(--border2); }

/* ---------------------------------------------------------------- command line */
#cmdline { position: relative; flex: none; background: var(--cmd-bg); border-top: 1px solid var(--border); }
#cmd-history { height: 58px; overflow-y: auto; padding: 3px 10px 0 38px; font: 12px/1.45 var(--mono); color: var(--text2); white-space: pre-wrap; }
#cmdline.expanded #cmd-history { height: 240px; }
#cmd-history .res { color: var(--text); }
#cmd-history .err { color: #ff8a80; }
#cmd-history .ok { color: #8fe0b0; }
#cmd-row { display: flex; align-items: center; gap: 6px; height: 28px; padding: 0 8px 0 4px; border-top: 1px solid rgba(255,255,255,.04); position: relative; }
#cmd-close { width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; color: var(--text3); }
#cmd-prompt { font: 12px var(--mono); color: var(--text2); white-space: nowrap; }
#cmd-input { flex: 1; background: transparent; border: 0; outline: none; font: 13px var(--mono); color: var(--text); text-transform: uppercase; }
#cmd-input::placeholder { text-transform: none; color: var(--text3); }
#cmd-suggest { position: absolute; left: 30px; bottom: 30px; background: var(--bg2); border: 1px solid var(--border); box-shadow: 0 6px 20px rgba(0,0,0,.4); min-width: 280px; max-height: 260px; overflow: auto; z-index: 20; }
#cmd-suggest div { padding: 4px 10px; font: 12px var(--mono); cursor: pointer; display: flex; justify-content: space-between; gap: 16px; }
#cmd-suggest div span { color: var(--text3); font-family: var(--font); }
#cmd-suggest div.sel, #cmd-suggest div:hover { background: var(--active); }

/* ---------------------------------------------------------------- status bar */
#statusbar { height: 28px; display: flex; align-items: center; background: var(--bg); border-top: 1px solid var(--border); flex: none; }
#layout-tabs { display: flex; height: 100%; overflow-x: auto; scrollbar-width: none; flex: 1; min-width: 0; }
.ltab { padding: 0 12px; height: 100%; color: var(--text2); border-right: 1px solid var(--border); white-space: nowrap; }
.ltab:hover { color: var(--text); background: var(--hover); }
.ltab.active { color: var(--text); background: var(--bg3); box-shadow: inset 0 -2px 0 var(--accent); }
.sb-right { display: flex; align-items: center; gap: 2px; padding: 0 6px; flex: none; }
#sb-coords { font: 12px var(--mono); color: var(--text2); min-width: 250px; text-align: right; padding-right: 10px; }
.sb-btn { height: 22px; min-width: 24px; padding: 0 5px; display: flex; align-items: center; justify-content: center; border-radius: 2px; color: var(--text2); font-size: 11px; }
.sb-btn:hover { background: var(--hover); color: var(--text); }
.sb-btn.on { color: var(--accent2); background: rgba(6,150,215,.16); }
#sb-space { font-weight: 600; letter-spacing: .3px; }
#sb-zoom { color: var(--text3); min-width: 54px; text-align: right; padding-right: 6px; }

/* ---------------------------------------------------------------- modal / context menu */
#modal { position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 100; display: flex; align-items: center; justify-content: center; }
.modal-box { background: var(--bg2); border: 1px solid var(--border); box-shadow: 0 16px 50px rgba(0,0,0,.5); min-width: 380px; max-width: 760px; max-height: 86vh; display: flex; flex-direction: column; }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 8px 12px; background: var(--bg3); border-bottom: 1px solid var(--border); font-weight: 600; }
#modal-x { width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; }
#modal-body { padding: 14px; overflow: auto; }
#modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--border); }
#modal-foot:empty { display: none; }
.btn { padding: 5px 16px; border: 1px solid var(--border2); border-radius: 3px; background: var(--bg3); }
.btn:hover { background: var(--hover); }
.btn.primary { background: var(--accent); border-color: var(--accent2); color: #fff; }
.form-row { display: flex; align-items: center; gap: 10px; margin: 8px 0; }
.form-row label { min-width: 150px; color: var(--text2); }
.form-row input[type=text], .form-row input[type=url], .form-row input[type=number], .form-row select { flex: 1; background: var(--bg); border: 1px solid var(--border2); padding: 5px 7px; border-radius: 2px; outline: none; }
.form-row input:focus, .form-row select:focus { border-color: var(--accent); }
.kbd-table { border-collapse: collapse; width: 100%; }
.kbd-table td { padding: 4px 8px; border-bottom: 1px solid var(--border); }
.kbd-table td:first-child { font-family: var(--mono); color: var(--accent2); white-space: nowrap; }
kbd { font: 11px var(--mono); background: var(--bg); border: 1px solid var(--border2); border-radius: 3px; padding: 1px 5px; }
.info-grid { display: grid; grid-template-columns: 180px 1fr; gap: 3px 12px; }
.info-grid div:nth-child(odd) { color: var(--text2); }
.warn-list { max-height: 160px; overflow: auto; font: 11px var(--mono); color: #ffcf80; background: var(--bg); padding: 6px; border: 1px solid var(--border); }
#ctxmenu { min-width: 200px; padding: 4px 0; }
#ctxmenu button { display: flex; width: 100%; justify-content: space-between; gap: 18px; padding: 5px 14px; text-align: left; }
#ctxmenu button:hover { background: var(--active); }
#ctxmenu button small { color: var(--text3); }
#ctxmenu hr { border: 0; border-top: 1px solid var(--border2); margin: 4px 0; }

/* ---------------------------------------------------------------- print */
#print-area { display: none; }
@media print {
  @page { margin: 8mm; }
  html, body { background: #fff !important; overflow: visible; height: auto; }
  #app, #modal, #ctxmenu, #appmenu { display: none !important; }
  #print-area { display: block; }
  #print-area img { width: 100%; height: auto; max-height: 100vh; object-fit: contain; display: block; }
}
@media (max-width: 760px) {
  #title-search { display: none; }
  #palettes { position: absolute; right: 0; top: 0; bottom: 0; z-index: 5; width: 92vw; }
  .start-cols { grid-template-columns: 1fr; }
  #sb-coords { min-width: 0; font-size: 11px; }
}