/* SiliconLab Live — application styles (light + dark) */
:root {
  color-scheme: light dark;
  --bg: #f5f7fa; --panel: #ffffff; --panel-2: #eef2f6; --line: #d6dde6; --line-2: #c3ccd8;
  --text: #0d1726; --muted: #4f5f73; --faint: #7a889a;
  --accent: #0f766e; --accent-ink: #ffffff; --accent-soft: #ddf1ed; --accent-line: #8cc9bf;
  --danger: #b42335; --danger-soft: #fce8eb; --warn: #8a5a00; --warn-soft: #fff3d1; --ok: #18753a; --ok-soft: #e1f4e6;
  --info-soft: #e5eefb; --info: #1f4f99;
  --focus: #0f766e;
  --code-bg: #fbfcfe; --code-gutter: #f1f4f8;
  --syn-kw: #7b2fbf; --syn-str: #a04a00; --syn-com: #6b7a8c; --syn-num: #0b6e99; --syn-sys: #b5306e; --syn-dir: #2f6a00;
  --mark: rgba(180, 35, 53, .12);
  --wave-bg: #fbfcfe; --wave-grid: #e5eaf0; --wave-axis: #4f5f73; --wave-sig: #12804b; --wave-bus: #0f766e;
  --wave-x: #c62f42; --wave-z: #b07700; --wave-cursor: #d4462f; --wave-text: #0d1726; --wave-row: #f2f5f9; --wave-sel: #ddf1ed;
  --radius: 10px; --shadow: 0 1px 2px rgba(13, 23, 38, .06), 0 4px 16px rgba(13, 23, 38, .05);
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #07101d; --panel: #0e1a2b; --panel-2: #13233a; --line: #22344b; --line-2: #2f4560;
    --text: #e7eef8; --muted: #a2b3c7; --faint: #7e90a6;
    --accent: #5fd8b8; --accent-ink: #052b22; --accent-soft: #10332d; --accent-line: #2f7d6c;
    --danger: #ff8b98; --danger-soft: #3a1820; --warn: #f2c35b; --warn-soft: #3a2e10; --ok: #6fdc95; --ok-soft: #12321f;
    --info-soft: #14284a; --info: #9cc2ff;
    --focus: #5fd8b8;
    --code-bg: #0a1423; --code-gutter: #0d1929;
    --syn-kw: #c7a2ff; --syn-str: #ffb27a; --syn-com: #7d8ea4; --syn-num: #7fd0ff; --syn-sys: #ff8fc0; --syn-dir: #a6e36d;
    --mark: rgba(255, 139, 152, .16);
    --wave-bg: #0a1423; --wave-grid: #172840; --wave-axis: #a2b3c7; --wave-sig: #5fe09a; --wave-bus: #5fd8b8;
    --wave-x: #ff6b7d; --wave-z: #f2c35b; --wave-cursor: #ff9c6b; --wave-text: #e7eef8; --wave-row: #0d1a2c; --wave-sel: #10332d;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.55 var(--sans); min-height: 100vh; }
a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(26px, 3.2vw, 36px); }
h2 { font-size: 20px; }
h3 { font-size: 16px; }
p { margin: 0 0 1em; }
code, pre, kbd { font-family: var(--mono); font-size: .92em; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--panel); padding: 8px 12px; z-index: 50; }
.skip:focus { left: 8px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: var(--mono); }
.nowrap { white-space: nowrap; }
.hidden { display: none !important; }

/* top bar */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 10px 20px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 650; }
.brand b { color: var(--accent); font-weight: 750; }
.brand .mark { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 8px;
  background: var(--accent); color: var(--accent-ink); font: 700 13px/1 var(--mono); }
.topbar nav { display: flex; align-items: center; gap: 4px 14px; flex-wrap: wrap; }
.topbar nav a { color: var(--muted); text-decoration: none; font-size: 14px; padding: 4px 2px; }
.topbar nav a:hover, .topbar nav a[aria-current="page"] { color: var(--text); }
.topbar nav a.btn, .topbar nav a.btn:hover { color: var(--accent-ink); padding: 7px 12px; }
.topbar form { margin: 0; }

/* buttons + forms */
.btn, button.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid transparent;
  background: var(--accent); color: var(--accent-ink); font: 600 14px/1 var(--sans); padding: 10px 15px; border-radius: 8px;
  cursor: pointer; text-decoration: none; white-space: nowrap; min-height: 38px; }
.btn:hover { filter: brightness(1.06); }
.btn.secondary { background: var(--panel); color: var(--text); border-color: var(--line-2); }
.btn.ghost { background: transparent; color: var(--text); border-color: transparent; }
.btn.danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.btn.small { padding: 7px 11px; font-size: 13px; min-height: 32px; }
.btn:disabled { opacity: .5; cursor: not-allowed; filter: none; }
.linkish { background: none; border: 0; padding: 4px 2px; color: var(--muted); font: inherit; font-size: 14px; cursor: pointer; }
.linkish:hover { color: var(--text); }
label { display: block; font-weight: 600; font-size: 13px; margin: 14px 0 6px; }
.hint { display: block; font-weight: 400; color: var(--muted); font-size: 12.5px; margin-top: 4px; }
input[type=text], input[type=email], input[type=number], input[type=search], input[type=datetime-local], input:not([type]), select, textarea {
  width: 100%; background: var(--panel); color: var(--text); border: 1px solid var(--line-2); border-radius: 8px;
  padding: 9px 11px; font: 14px/1.4 var(--sans); }
textarea { min-height: 110px; resize: vertical; }
textarea.mono { font: 13px/1.5 var(--mono); }
input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); vertical-align: -3px; margin-right: 6px; }
.check { font-weight: 500; display: flex; align-items: flex-start; gap: 4px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.end { justify-content: flex-end; }
.row.between { justify-content: space-between; }
.stack > * + * { margin-top: 12px; }

/* page layout */
.page { max-width: 1180px; margin: 0 auto; padding: 28px 20px 64px; }
.page.narrow { max-width: 760px; }
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.crumbs a { color: var(--muted); }
.kicker { color: var(--accent); font: 650 12px/1.2 var(--sans); text-transform: uppercase; letter-spacing: .12em; margin-bottom: 8px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); min-width: 0; }
.card + .card { margin-top: 16px; }
.grid > .card + .card, .grid > section + section { margin-top: 0; }
.card h2 { margin-bottom: 12px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.two { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); }
.section { margin-top: 28px; }
.notice { padding: 12px 14px; border-radius: 8px; background: var(--info-soft); color: var(--text); border: 1px solid transparent; margin: 12px 0; }
.notice.error { background: var(--danger-soft); color: var(--danger); }
.notice.warn { background: var(--warn-soft); color: var(--warn); }
.notice.ok { background: var(--ok-soft); color: var(--ok); }
.tag { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 99px;
  background: var(--panel-2); color: var(--muted); white-space: nowrap; }
.tag.ok { background: var(--ok-soft); color: var(--ok); }
.tag.bad { background: var(--danger-soft); color: var(--danger); }
.tag.warn { background: var(--warn-soft); color: var(--warn); }
.tag.accent { background: var(--accent-soft); color: var(--accent); }
.list { list-style: none; margin: 0; padding: 0; }
.list li { padding: 12px 0; border-top: 1px solid var(--line); display: flex; gap: 12px; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.list li:first-child { border-top: 0; }
.stat { display: block; font-size: 28px; font-weight: 700; letter-spacing: -.02em; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 650; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.code-block { background: var(--code-bg); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; overflow: auto;
  font: 12.5px/1.55 var(--mono); white-space: pre; max-height: 520px; }
.joincode { font: 700 26px/1 var(--mono); letter-spacing: .12em; background: var(--panel-2); padding: 10px 14px; border-radius: 8px; display: inline-block; }
.empty { color: var(--muted); padding: 18px 0; }
.foot { text-align: center; color: var(--faint); font-size: 13px; padding: 24px 16px 32px; }
.foot a { color: var(--muted); }

/* brief (rendered Markdown subset) */
.brief h3 { font-size: 18px; margin-top: 4px; }
.brief h4 { font-size: 15px; }
.brief pre { background: var(--code-bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; overflow: auto; }
.brief code { background: var(--panel-2); padding: 1px 5px; border-radius: 4px; }
.brief pre code { background: none; padding: 0; }
.brief ul { padding-left: 20px; }

/* landing */
.hero { padding: 56px 0 24px; }
.hero h1 { font-size: clamp(32px, 5vw, 52px); max-width: 16ch; }
.hero .lead { font-size: 18px; color: var(--muted); max-width: 60ch; }
.feature h3 { margin-bottom: 6px; }
.steps { counter-reset: step; display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.steps > div { counter-increment: step; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.steps > div::before { content: "0" counter(step); display: block; color: var(--accent); font: 700 13px/1 var(--mono); margin-bottom: 10px; }
.shot { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 10px; box-shadow: var(--shadow); }
.shot img, .shot svg { width: 100%; height: auto; display: block; border-radius: 8px; }

/* ---------------------------------------------------------------- IDE */
body.ide-page { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }
body.ide-page .foot { display: none; }
.ide { flex: 1; min-height: 0; display: grid; grid-template-columns: minmax(260px, 340px) minmax(0, 1fr); }
.ide.no-side { grid-template-columns: minmax(0, 1fr); }
.ide-side { border-right: 1px solid var(--line); background: var(--panel); overflow: auto; padding: 16px 18px 24px; min-width: 0; }
.ide-side h1 { font-size: 20px; margin-bottom: 6px; }
.ide-side .meta { font-size: 13px; color: var(--muted); display: grid; gap: 4px; margin: 10px 0 14px; }
.ide-main { display: grid; grid-template-rows: auto minmax(160px, 1fr) minmax(220px, 42%); min-height: 0; min-width: 0; }
.ide-toolbar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding: 8px 12px; border-bottom: 1px solid var(--line); background: var(--panel); }
.ide-toolbar .spacer { flex: 1; }
.ide-toolbar select { width: auto; min-width: 180px; padding: 7px 10px; }
.ide-toolbar input.title { width: 220px; padding: 7px 10px; }
.save-state { font-size: 12.5px; color: var(--faint); min-width: 90px; }
.ide-editor { min-height: 0; min-width: 0; border-bottom: 1px solid var(--line); }
.ide-output { display: flex; flex-direction: column; min-height: 0; background: var(--panel); }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); padding: 0 8px; overflow-x: auto; flex-shrink: 0; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tabs button { background: none; border: 0; border-bottom: 2px solid transparent; color: var(--muted); font: 600 13px/1 var(--sans);
  padding: 11px 12px 9px; cursor: pointer; white-space: nowrap; }
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
.tabs .badge { display: inline-block; min-width: 18px; padding: 1px 6px; border-radius: 99px; background: var(--panel-2); font-size: 11px; margin-left: 4px; }
.tabs .badge.ok { background: var(--ok-soft); color: var(--ok); }
.tabs .badge.bad { background: var(--danger-soft); color: var(--danger); }
.panel { flex: 1; min-height: 0; overflow: auto; padding: 12px 14px; }
.panel.flush { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.console { font: 12.5px/1.55 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere; margin: 0; }
.console .err { color: var(--danger); }
.console .pass { color: var(--ok); }
.console .fail { color: var(--danger); font-weight: 600; }
.console .sys { color: var(--faint); }
.errlist { list-style: none; padding: 0; margin: 0 0 12px; }
.errlist li { margin: 0 0 6px; }
.errlist button { all: unset; cursor: pointer; font: 12.5px/1.5 var(--mono); color: var(--danger); }
.errlist button:hover, .errlist button:focus-visible { text-decoration: underline; }
.results-table td:first-child { font-family: var(--mono); font-size: 13px; }
.spinner { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--line-2); border-top-color: var(--accent); animation: spin .8s linear infinite; display: inline-block; vertical-align: -2px; }
@keyframes spin { to { transform: rotate(360deg); } }
.designs { list-style: none; padding: 0; margin: 8px 0 0; }
.designs li { display: flex; justify-content: space-between; gap: 8px; align-items: center; padding: 8px 0; border-top: 1px solid var(--line); font-size: 14px; }
.designs li a { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.designs li.empty { display: block; }

/* editor */
.ed { display: flex; flex-direction: column; height: 100%; min-height: 0; background: var(--code-bg); }
.ed-tabs { display: flex; align-items: stretch; gap: 0; border-bottom: 1px solid var(--line); background: var(--panel-2); overflow-x: auto; flex-shrink: 0; }
.ed-tab { display: flex; align-items: center; gap: 6px; padding: 0 6px 0 12px; border-right: 1px solid var(--line); font: 13px/1 var(--mono);
  color: var(--muted); cursor: pointer; white-space: nowrap; height: 36px; background: transparent; border-top: 0; border-left: 0; border-bottom: 0; }
.ed-tab[aria-selected="true"] { background: var(--code-bg); color: var(--text); box-shadow: inset 0 2px 0 var(--accent); }
.ed-tab .x { border: 0; background: none; color: var(--faint); cursor: pointer; font-size: 15px; line-height: 1; padding: 4px 6px; border-radius: 4px; }
.ed-tab .x:hover { background: var(--danger-soft); color: var(--danger); }
.ed-tab .ro { font: 10px/1 var(--sans); text-transform: uppercase; letter-spacing: .06em; color: var(--faint); padding-right: 6px; }
.ed-add { border: 0; background: none; color: var(--accent); font: 600 13px/1 var(--sans); padding: 0 12px; cursor: pointer; white-space: nowrap; }
.ed-newname { display: flex; align-items: center; gap: 6px; padding: 0 8px; }
.ed-newname input { width: 150px; padding: 5px 8px; font: 13px var(--mono); }
.ed-body { position: relative; flex: 1; display: flex; min-height: 0; font: 13px/20px var(--mono); }
.ed-gutter { flex: 0 0 auto; min-width: 46px; padding: 10px 8px 10px 6px; text-align: right; color: var(--faint); background: var(--code-gutter);
  user-select: none; overflow: hidden; white-space: pre; border-right: 1px solid var(--line); }
.ed-gutter .e { color: var(--danger); font-weight: 700; }
.ed-scroll { position: relative; flex: 1; min-width: 0; overflow: hidden; }
.ed-marks, .ed-hl, .ed-ta { position: absolute; inset: 0; margin: 0; padding: 10px 12px; font: inherit; white-space: pre; tab-size: 2; -moz-tab-size: 2; letter-spacing: 0; word-spacing: 0; }
.ed-marks { overflow: hidden; pointer-events: none; padding: 0; }
.ed-marks div { position: absolute; left: 0; right: 0; height: 20px; background: var(--mark); }
.ed-hl { overflow: hidden; pointer-events: none; color: var(--text); }
.ed-ta { width: 100%; height: 100%; border: 0; outline: none; resize: none; background: transparent; color: transparent; caret-color: var(--text);
  overflow: auto; overscroll-behavior: contain; }
.ed-ta::selection { background: rgba(95, 140, 216, .35); color: transparent; }
.ed-ta[readonly] { caret-color: transparent; }
.ed-hl .k { color: var(--syn-kw); font-weight: 600; }
.ed-hl .s { color: var(--syn-str); }
.ed-hl .c { color: var(--syn-com); font-style: italic; }
.ed-hl .n { color: var(--syn-num); }
.ed-hl .t { color: var(--syn-sys); }
.ed-hl .d { color: var(--syn-dir); }
.ed.small .ed-body { min-height: 220px; }

/* waveform */
.wave { display: flex; flex-direction: column; height: 100%; min-height: 0; background: var(--wave-bg); }
.wave-bar { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; padding: 6px 10px; border-bottom: 1px solid var(--line); background: var(--panel); flex-shrink: 0; }
.wave-bar .btn { min-height: 30px; padding: 6px 10px; font-size: 13px; }
.wave-bar select { width: auto; padding: 5px 8px; font-size: 13px; }
.wave-bar .readout { font: 12.5px var(--mono); color: var(--muted); margin-left: auto; }
.wave-stage { position: relative; flex: 1; min-height: 0; display: flex; flex-direction: column; }
.wave-axis { flex: 0 0 auto; display: block; width: 100%; height: 26px; cursor: crosshair; }
.wave-scroll { flex: 1; min-height: 0; overflow-y: auto; overflow-x: hidden; }
.wave-rows { display: block; width: 100%; cursor: crosshair; touch-action: pan-y; }
.wave-rows:focus-visible { outline-offset: -2px; }
.wave-empty { padding: 24px; color: var(--muted); }
.wave-picker { position: absolute; z-index: 5; top: 6px; left: 10px; width: min(360px, calc(100% - 20px)); max-height: calc(100% - 12px); overflow: auto;
  background: var(--panel); border: 1px solid var(--line-2); border-radius: 10px; box-shadow: 0 10px 30px rgba(0,0,0,.18); padding: 10px 12px; }
.wave-picker h4 { font: 650 12px/1.2 var(--mono); color: var(--muted); margin: 10px 0 4px; }
.wave-picker label { font: 400 13px/1.3 var(--mono); margin: 3px 0; display: flex; align-items: center; }
.wave-picker .row { margin-bottom: 4px; }

/* responsive */
@media (max-width: 900px) {
  body.ide-page { height: auto; overflow: visible; }
  .ide { display: block; }
  .ide-side { border-right: 0; border-bottom: 1px solid var(--line); max-height: none; }
  .ide-main { display: flex; flex-direction: column; }
  .ide-editor { height: 56vh; }
  .ide-output { min-height: 460px; height: 70vh; }
  .ide-toolbar select, .ide-toolbar input.title { min-width: 0; width: 100%; }
  .grid.two { grid-template-columns: 1fr; }
  .page { padding: 20px 16px 48px; }
  .topbar { padding: 10px 16px; }
}
@media (max-width: 600px) {
  .tabs { padding: 0 2px; }
  .tabs button { padding: 11px 8px 9px; font-size: 12.5px; }
  .card { padding: 16px; }
  .stat { font-size: 24px; }
}
@media (prefers-reduced-motion: reduce) { .spinner { animation: none; } }