/* ---------- Theme tokens ---------- */
:root {
  --bg: #0f1115;
  --bg-1: #151821;
  --bg-2: #1b1f2a;
  --bg-3: #232836;
  --hover: #2a3040;
  --border: #2a2f3c;
  --border-strong: #3a4152;
  --fg: #e4e7ef;
  --fg-2: #b6bccb;
  --muted: #7d8597;
  --accent: #14b8a6;
  --accent-hi: #2dd4bf;
  --accent-fg: #04201d;
  --accent-soft: rgb(20 184 166 / .14);
  --danger: #f85149;
  --danger-soft: rgb(248 81 73 / .14);
  --warn: #e3b341;
  --warn-soft: rgb(227 179 65 / .14);
  --ok: #3fb950;
  --info: #58a6ff;
  --sel: rgb(88 166 255 / .16);
  --shadow: 0 12px 40px rgb(0 0 0 / .45);
  --radius: 8px;
  --font: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", Consolas, monospace;
  --side-w: 290px;
  --panel-h: 270px;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-1: #f7f8fa;
  --bg-2: #eff1f5;
  --bg-3: #e5e8ee;
  --hover: #e1e5ec;
  --border: #dde1e8;
  --border-strong: #c7cdd8;
  --fg: #1d2330;
  --fg-2: #444d5e;
  --muted: #6b7385;
  --accent: #0d9488;
  --accent-hi: #0f766e;
  --accent-fg: #ffffff;
  --accent-soft: rgb(13 148 136 / .1);
  --danger: #cf222e;
  --danger-soft: rgb(207 34 46 / .09);
  --warn: #9a6700;
  --warn-soft: rgb(154 103 0 / .1);
  --ok: #1a7f37;
  --info: #0969da;
  --sel: rgb(9 105 218 / .1);
  --shadow: 0 12px 40px rgb(30 40 60 / .18);
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--fg); font: 13px/1.45 var(--font); }
body { display: flex; flex-direction: column; overflow: hidden; }
button, select, input { font: inherit; color: inherit; }
svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }
code { font-family: var(--mono); font-size: .92em; background: var(--bg-3); padding: 0 4px; border-radius: 4px; }
a { color: var(--accent-hi); }
.hidden { display: none !important; }
.spacer { flex: 1; }
.hint { color: var(--muted); font-size: 12px; margin: 6px 0; line-height: 1.5; }

input, select {
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  padding: 5px 8px; min-width: 0; outline: none;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 6px;
  padding: 6px 12px; cursor: pointer; white-space: nowrap; font-weight: 500;
}
.btn:hover:not(:disabled) { background: var(--hover); border-color: var(--border-strong); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn.primary:hover:not(:disabled) { background: var(--accent-hi); border-color: var(--accent-hi); }
.btn.ghost { background: transparent; }
.btn.sm { padding: 3px 9px; font-size: 12px; }
.btn.wide { width: 100%; }
.icon-btn {
  display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 6px;
  background: transparent; border: none; color: var(--fg-2); cursor: pointer;
}
.icon-btn:hover:not(:disabled) { background: var(--hover); color: var(--fg); }
.icon-btn:disabled { opacity: .35; cursor: default; }
.icon-btn.sm { width: 26px; height: 26px; }
.icon-btn svg { width: 17px; height: 17px; }

/* ---------- Title bar ---------- */
.titlebar {
  display: flex; align-items: center; gap: 10px; height: 52px; padding: 0 10px 0 12px;
  background: var(--bg-1); border-bottom: 1px solid var(--border); flex: none;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; letter-spacing: -.01em; margin-right: 6px; }
.brand .logo { width: 24px; height: 24px; }
.brand .logo rect { fill: var(--accent); stroke: none; }
.brand .logo path { stroke: var(--accent-fg); stroke-width: 2.2; }
.actions { display: flex; gap: 6px; }
.act {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%;
  background: var(--bg-2); border: 1px solid var(--border); cursor: pointer; color: var(--fg);
}
.act svg { width: 18px; height: 18px; stroke-width: 2.2; }
.act:hover:not(:disabled) { border-color: var(--accent); color: var(--accent-hi); }
.act.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.act.primary:hover:not(:disabled) { background: var(--accent-hi); color: var(--accent-fg); }
.act.toggle[aria-pressed="true"] { background: var(--warn-soft); border-color: var(--warn); color: var(--warn); }
.act:disabled { opacity: .5; cursor: progress; }
.chip-group { display: flex; align-items: center; gap: 6px; min-width: 0; margin-left: 6px; }
.chip {
  position: relative; display: inline-flex; align-items: center; gap: 7px; height: 34px; padding: 0 10px;
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 8px; cursor: pointer; min-width: 0; max-width: 300px;
}
.chip:hover { border-color: var(--border-strong); }
.chip > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chip.board select {
  appearance: none; border: none; background: transparent; padding: 0 18px 0 0; box-shadow: none;
  font-weight: 500; cursor: pointer; min-width: 120px; max-width: 220px; text-overflow: ellipsis;
}
.chip.board select option, .chip.board select optgroup { background: var(--bg-1); color: var(--fg); }
.chip .caret { position: absolute; right: 8px; width: 14px; height: 14px; pointer-events: none; color: var(--muted); }
.chip.connected { border-color: var(--accent); }
.chip.connected svg { color: var(--accent-hi); }
.opts { display: flex; gap: 6px; }
.opts select { height: 34px; max-width: 190px; background: var(--bg-2); border-radius: 8px; }
.progress { width: 160px; height: 6px; background: var(--bg-3); border-radius: 99px; overflow: hidden; }
.progress div { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--accent-hi)); transition: width .15s; }

/* ---------- Workbench ---------- */
.workbench { flex: 1; min-height: 0; display: flex; }
.activitybar {
  width: 50px; flex: none; display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 8px 0;
  background: var(--bg-1); border-right: 1px solid var(--border);
}
.activitybar button {
  position: relative; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 8px;
  background: none; border: none; color: var(--muted); cursor: pointer;
}
.activitybar button svg { width: 21px; height: 21px; stroke-width: 1.7; }
.activitybar button:hover { color: var(--fg); background: var(--hover); }
.activitybar button.active { color: var(--fg); }
.activitybar button.active::before {
  content: ""; position: absolute; left: -5px; top: 9px; bottom: 9px; width: 3px; border-radius: 2px; background: var(--accent);
}
.workbench.side-hidden .sidebar, .workbench.side-hidden #sideResizer { display: none; }

.sidebar { width: var(--side-w); flex: none; min-width: 0; background: var(--bg-1); display: flex; flex-direction: column; overflow: hidden; }
.view { display: none; flex-direction: column; gap: 10px; padding: 0 12px 14px; overflow: auto; flex: 1; min-height: 0; }
.view.active { display: flex; }
.view-head { display: flex; align-items: center; justify-content: space-between; height: 40px; flex: none; position: sticky; top: 0; background: var(--bg-1); z-index: 1; }
.view-head h2 { margin: 0; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.head-actions { display: flex; gap: 2px; }
.head-actions label { cursor: pointer; }
.view h3 { margin: 8px 0 0; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.row { display: flex; gap: 6px; align-items: center; }
.row > input, .row > select { flex: 1; }
.field { display: flex; flex-direction: column; gap: 4px; color: var(--fg-2); font-size: 12px; font-weight: 500; }
.field small { color: var(--muted); font-weight: 400; }
.field.grow { flex: 1; }
.status { font-size: 12px; color: var(--muted); white-space: pre-wrap; word-break: break-word; }
.status.err { color: var(--danger); }
.search { position: relative; display: flex; align-items: center; }
.search svg { position: absolute; left: 9px; color: var(--muted); width: 15px; height: 15px; }
.search input { width: 100%; padding-left: 30px; }
.search.sm input { height: 26px; width: 150px; padding-top: 2px; padding-bottom: 2px; }
.card { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.card .hint { margin: 0; }

.menu { display: flex; flex-direction: column; background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 4px; box-shadow: var(--shadow); }
.menu button { border: none; background: none; text-align: left; padding: 6px 10px; border-radius: 5px; cursor: pointer; }
.menu button:hover { background: var(--hover); }
.danger { color: var(--danger) !important; }

/* File tree */
.tree { list-style: none; margin: 0 -6px; padding: 0; }
.tree li {
  display: flex; align-items: center; gap: 6px; height: 28px; padding: 0 6px; border-radius: 6px; cursor: pointer; white-space: nowrap;
}
.tree li:hover { background: var(--hover); }
.tree li.active { background: var(--sel); }
.tree li.dir { color: var(--muted); cursor: default; font-weight: 500; }
.tree li .ficon { width: 14px; height: 14px; color: var(--muted); }
.tree li.sketch-main .ficon { color: var(--accent-hi); }
.tree li .name { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.tree li .ops { display: none; gap: 2px; }
.tree li:hover .ops { display: flex; }
.tree li .ops button { padding: 0 5px; height: 22px; font-size: 12px; background: none; border: none; border-radius: 4px; color: var(--muted); cursor: pointer; }
.tree li .ops button:hover { color: var(--fg); background: var(--bg-3); }
.tree li.sketch-main .name::after { content: " ●"; color: var(--accent-hi); font-size: 9px; }

/* Cards lists (examples, boards, libraries) */
.cards { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.cards li {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 9px 10px;
  display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; align-items: center;
}
.cards li:hover { border-color: var(--border-strong); }
.cards li b { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cards li p { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 12px; }
.cards li .meta { grid-column: 1 / -1; color: var(--muted); font-size: 11px; font-family: var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cards li.selected { border-color: var(--accent); background: var(--accent-soft); }
.cards.compact li { padding: 6px 10px; }
.cards .group { background: none; border: none; padding: 8px 2px 0; color: var(--muted); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; display: block; }
.cards li.empty-row { display: block; color: var(--muted); background: none; border-style: dashed; }
.badge { display: inline-block; min-width: 18px; padding: 0 5px; border-radius: 99px; background: var(--bg-3); color: var(--fg-2); font-size: 11px; text-align: center; }
details.sub { display: flex; flex-direction: column; gap: 8px; }
details.sub summary { cursor: pointer; color: var(--fg-2); font-weight: 500; margin: 4px 0; }
details.sub[open] > *:not(summary) { margin-top: 8px; }

.switch { display: flex; align-items: center; gap: 10px; font-weight: 500; cursor: pointer; }
.switch input { display: none; }
.switch span { position: relative; width: 34px; height: 20px; border-radius: 99px; background: var(--bg-3); border: 1px solid var(--border-strong); transition: .15s; }
.switch span::after { content: ""; position: absolute; top: 2px; left: 2px; width: 14px; height: 14px; border-radius: 50%; background: var(--fg-2); transition: .15s; }
.switch input:checked + span { background: var(--warn); border-color: var(--warn); }
.switch input:checked + span::after { left: 16px; background: #fff; }
.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.tool-grid .btn { justify-content: flex-start; }
.cheats { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; margin: 0; font-size: 12px; }
.cheats dt { font-family: var(--mono); color: var(--accent-hi); }
.cheats dd { margin: 0; color: var(--fg-2); }

/* Resizers */
.resizer { flex: none; background: transparent; position: relative; z-index: 2; }
.resizer.col { width: 4px; margin-left: -2px; margin-right: -2px; cursor: col-resize; border-right: 1px solid var(--border); background-clip: content-box; }
.resizer.row { height: 4px; margin-top: -2px; margin-bottom: -2px; cursor: row-resize; }
.resizer:hover, .resizer.dragging { background: var(--accent); }
body.resizing { user-select: none; }
body.resizing #editor { pointer-events: none; }

/* ---------- Main area ---------- */
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.editor-wrap { flex: 1; min-height: 80px; display: flex; flex-direction: column; position: relative; }
.editor-tabs { display: flex; background: var(--bg-1); overflow-x: auto; border-bottom: 1px solid var(--border); min-height: 36px; flex: none; scrollbar-width: thin; }
.editor-tabs .tab {
  display: flex; align-items: center; gap: 6px; padding: 0 8px 0 14px; border-right: 1px solid var(--border);
  cursor: pointer; color: var(--muted); white-space: nowrap; position: relative;
}
.editor-tabs .tab:hover { color: var(--fg); }
.editor-tabs .tab.active { background: var(--bg); color: var(--fg); }
.editor-tabs .tab.active::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--accent); }
.editor-tabs .tab .x { display: grid; place-items: center; width: 20px; height: 20px; border-radius: 4px; opacity: .6; }
.editor-tabs .tab .x:hover { opacity: 1; background: var(--hover); }
#editor { flex: 1; min-height: 0; }
.empty { position: absolute; inset: 36px 0 0 0; display: grid; place-items: center; color: var(--muted); }
.paused-banner {
  display: flex; align-items: center; gap: 10px; padding: 6px 12px; background: var(--warn-soft);
  border-bottom: 1px solid var(--warn); color: var(--warn); font-weight: 500; flex: none;
}
.paused-banner span { flex: 1; }
.dbg-line { background: rgb(227 179 65 / .22); }
.dbg-glyph { background: var(--warn); border-radius: 50%; margin-left: 6px; width: 10px !important; height: 10px !important; margin-top: 5px; }

/* ---------- Bottom panel ---------- */
.panel { height: var(--panel-h); flex: none; display: flex; flex-direction: column; background: var(--bg-1); border-top: 1px solid var(--border); min-height: 34px; }
.panel.max { height: calc(100% - 40px); }
.panel-tabs { display: flex; align-items: center; gap: 2px; height: 36px; padding: 0 6px; flex: none; border-bottom: 1px solid var(--border); }
.panel-tabs > button[data-tab] {
  display: flex; align-items: center; gap: 6px; height: 100%; padding: 0 10px; background: none; border: none;
  border-bottom: 2px solid transparent; color: var(--muted); cursor: pointer; font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: .04em;
}
.panel-tabs > button[data-tab]:hover { color: var(--fg); }
.panel-tabs > button.active { color: var(--fg); border-bottom-color: var(--accent); }
.dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--border-strong); }
.dot.on { background: var(--ok); box-shadow: 0 0 0 3px rgb(63 185 80 / .2); }
.dot.paused { background: var(--warn); box-shadow: 0 0 0 3px var(--warn-soft); }
.badge.err { background: var(--danger); color: #fff; }
.badge.warn { background: var(--warn); color: #000; }
.tab-body { display: none; flex: 1; min-height: 0; flex-direction: column; }
.tab-body.active { display: flex; }
.toolbar { display: flex; align-items: center; gap: 8px; padding: 6px 10px; border-bottom: 1px solid var(--border); flex-wrap: wrap; flex: none; }
.toolbar select { height: 26px; padding: 2px 6px; }
.check { display: inline-flex; align-items: center; gap: 5px; color: var(--fg-2); font-size: 12px; cursor: pointer; white-space: nowrap; }
.check input { accent-color: var(--accent); margin: 0; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.seg button { background: transparent; border: none; padding: 3px 10px; font-size: 12px; cursor: pointer; color: var(--muted); }
.seg button.active { background: var(--bg-3); color: var(--fg); }
.log { margin: 0; flex: 1; overflow: auto; padding: 8px 12px; font: 12.5px/1.55 var(--mono); white-space: pre-wrap; word-break: break-word; }
#output .err { color: var(--danger); }
#output .ok { color: var(--ok); }
#output .warn { color: var(--warn); }
#output .info { color: var(--info); }
#output a { color: var(--accent-hi); }
.serial-input { display: flex; gap: 6px; padding: 6px 10px; border-top: 1px solid var(--border); flex: none; }
.serial-input input { flex: 1; font-family: var(--mono); }

.build-summary { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; padding: 10px 12px; border-bottom: 1px solid var(--border); flex: none; }
.build-summary .state { display: flex; align-items: center; gap: 6px; font-weight: 600; }
.build-summary .state.ok { color: var(--ok); }
.build-summary .state.err { color: var(--danger); }
.meter { display: grid; grid-template-columns: auto 160px auto; gap: 8px; align-items: center; font-size: 12px; color: var(--fg-2); }
.meter .bar { height: 8px; background: var(--bg-3); border-radius: 99px; overflow: hidden; }
.meter .bar i { display: block; height: 100%; background: var(--ok); border-radius: 99px; }
.meter .bar i.mid { background: var(--warn); }
.meter .bar i.high { background: var(--danger); }
.build-summary .facts { color: var(--muted); font-size: 12px; }

.problems { list-style: none; margin: 0; padding: 4px 0; overflow: auto; flex: 1; }
.problems li { display: flex; gap: 8px; align-items: baseline; padding: 4px 14px; cursor: pointer; }
.problems li:hover { background: var(--hover); }
.problems li .sev { font-weight: 700; font-size: 11px; width: 54px; flex: none; }
.problems li .sev.error { color: var(--danger); }
.problems li .sev.warning { color: var(--warn); }
.problems li .where { color: var(--muted); font-family: var(--mono); font-size: 12px; flex: none; }
.problems li.empty-row { color: var(--muted); cursor: default; }
.problems li.empty-row:hover { background: none; }

#plotCanvas { flex: 1; min-height: 0; width: 100%; display: block; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.legend-item { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 12px; }
.legend-item { background: none; border: none; padding: 2px 4px; border-radius: 4px; cursor: pointer; color: var(--fg-2); }
.legend-item:hover { background: var(--hover); }
.legend-item.off { opacity: .4; text-decoration: line-through; }
.legend-item i { width: 12px; height: 3px; border-radius: 2px; }

.pill { display: inline-flex; align-items: center; gap: 6px; padding: 2px 10px; border-radius: 99px; font-size: 12px; font-weight: 600; background: var(--bg-3); color: var(--fg-2); }
.pill.running::before, .pill.paused::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.pill.running { color: var(--ok); background: rgb(63 185 80 / .12); }
.pill.paused { color: var(--warn); background: var(--warn-soft); }
.dbg-grid { flex: 1; min-height: 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.dbg-grid section { display: flex; flex-direction: column; min-height: 0; overflow: auto; }
.dbg-grid section + section { border-left: 1px solid var(--border); }
.dbg-grid h4 { margin: 0; padding: 8px 12px 4px; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); position: sticky; top: 0; background: var(--bg-1); }
.watch { width: 100%; border-collapse: collapse; font-size: 12px; }
.watch th { text-align: left; font-weight: 500; color: var(--muted); padding: 4px 12px; border-bottom: 1px solid var(--border); position: sticky; top: 26px; background: var(--bg-1); }
.watch td { padding: 4px 12px; border-bottom: 1px solid var(--border); font-family: var(--mono); }
.watch .w-name { color: var(--info); }
.watch .w-val { color: var(--fg); font-weight: 500; }
.watch .w-prev, .watch .w-count, .watch .w-time { color: var(--muted); }
.watch .w-val.changed { animation: flash 1s ease-out; }
@keyframes flash { from { background: var(--warn-soft); } to { background: transparent; } }
.events { list-style: none; margin: 0; padding: 4px 0; font-size: 12px; }
.events > li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px; padding: 3px 12px; }
.events time { color: var(--muted); font-family: var(--mono); font-size: 11px; }
.events b { font-size: 10px; letter-spacing: .05em; padding: 1px 6px; border-radius: 4px; background: var(--bg-3); color: var(--fg-2); }
.events .ev-break b, .events .ev-assert b { background: var(--warn-soft); color: var(--warn); }
.events .ev-crash { background: var(--danger-soft); }
.events .ev-crash b { background: var(--danger); color: #fff; }
.events .loc { background: none; border: none; color: var(--accent-hi); font-family: var(--mono); font-size: 12px; cursor: pointer; padding: 0; text-decoration: underline; text-underline-offset: 2px; }
.events .frames { flex-basis: 100%; margin: 4px 0 2px; padding-left: 20px; font-family: var(--mono); font-size: 12px; color: var(--fg-2); }
.events .frames code { background: none; padding: 0; color: var(--fg); }
.events p { flex-basis: 100%; margin: 2px 0; color: var(--muted); }
.empty-row { color: var(--muted); }

/* ---------- Status bar ---------- */
.statusbar { display: flex; align-items: center; gap: 2px; height: 26px; padding: 0 6px; background: var(--bg-1); border-top: 1px solid var(--border); font-size: 12px; color: var(--fg-2); flex: none; }
.sb-item { display: inline-flex; align-items: center; gap: 5px; padding: 0 8px; height: 100%; background: none; border: none; color: inherit; white-space: nowrap; }
button.sb-item { cursor: pointer; }
button.sb-item:hover { background: var(--hover); }
#serverStatus.online { color: var(--ok); }
#serverStatus.offline { color: var(--warn); }
#sbDebug { color: var(--warn); font-weight: 600; }

/* ---------- Dialogs ---------- */
dialog { background: var(--bg-1); color: var(--fg); border: 1px solid var(--border); border-radius: 12px; padding: 0; width: min(540px, calc(100vw - 32px)); box-shadow: var(--shadow); }
dialog::backdrop { background: rgb(0 0 0 / .5); backdrop-filter: blur(2px); }
.dlg { display: flex; flex-direction: column; gap: 12px; padding: 20px 22px; }
.dlg h3 { margin: 0; font-size: 16px; }
.dlg fieldset { border: 1px solid var(--border); border-radius: var(--radius); display: flex; flex-direction: column; gap: 8px; padding: 10px 14px 12px; margin: 0; }
.dlg legend { color: var(--accent-hi); padding: 0 6px; font-weight: 600; }
.dlg-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 99px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-track { background: transparent; }

@media (max-width: 900px) {
  .opts { display: none; }
  .brand span { display: none; }
  :root { --side-w: 240px; }
}
@media (max-width: 640px) {
  .titlebar { flex-wrap: wrap; height: auto; padding: 8px; }
  .workbench { flex-direction: column; }
  .activitybar { flex-direction: row; width: auto; height: 46px; padding: 0 8px; border-right: none; border-bottom: 1px solid var(--border); }
  .activitybar button.active::before { left: 9px; right: 9px; top: auto; bottom: -3px; width: auto; height: 3px; }
  .sidebar { width: auto; max-height: 40vh; }
  #sideResizer { display: none; }
  .dbg-grid { grid-template-columns: 1fr; }
}