:root {
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --bg: #f4f5fb;
  --fg: #171a26;
  --muted: #69708a;
  --border: #e2e5f0;
  --panel-bg: #ffffff;
  --editor-bg: #ffffff;
  --bar-bg: rgba(255, 255, 255, 0.82);
  --accent: #4f46e5;
  --accent-2: #06b6d4;
  --accent-fg: #ffffff;
  --active-line: #f5f6fd;
  --selection: #dcdcfb;
  --match: #e4e3fd;
  --ruler: rgba(23, 26, 38, 0.08);
  --err: #d92d4b;
  --warn: #a16207;
  --ok: #15803d;
  --stderr: #c2410c;
  --shadow: 0 1px 2px rgba(23, 26, 38, 0.04), 0 8px 24px rgba(23, 26, 38, 0.06);
  --radius: 14px;
  --ink: var(--fg);
  --ink2: #454a56;
  --ink3: var(--muted);
  --card2: color-mix(in srgb, var(--fg) 7%, transparent);
  --display: "SSPUR Display", "SSPUR Fallback", ui-rounded, system-ui, sans-serif;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --spring: cubic-bezier(.34, 1.56, .64, 1);
  --brand: linear-gradient(135deg, #22d3ee, #6366f1 55%, #a855f7);
  --glow: 13%;
  --sk: color-mix(in srgb, var(--fg) 8%, transparent);
  --sk-hi: color-mix(in srgb, var(--panel-bg) 75%, transparent);
}

@font-face { font-family: "SSPUR Display"; src: url(display-logo.woff2) format("woff2"); font-weight: 800; font-display: swap; }
@font-face { font-family: "SSPUR Fallback"; src: local("Arial Black"), local("Arial Bold"), local("Helvetica Neue Bold"), local("Roboto Black"), local("Arial"); font-weight: 800; size-adjust: 86.5%; ascent-override: 104%; descent-override: 30%; line-gap-override: 0%; }

.dark {
  --bg: #0a0d18;
  --fg: #e8eaf4;
  --muted: #8d93ad;
  --border: #23283b;
  --panel-bg: #11152a;
  --editor-bg: #0e1224;
  --bar-bg: rgba(14, 18, 36, 0.82);
  --accent: #818cf8;
  --accent-2: #22d3ee;
  --accent-fg: #0a0d18;
  --active-line: #151a33;
  --selection: #2e3466;
  --match: #262b52;
  --ruler: rgba(232, 234, 244, 0.08);
  --err: #ff7b8f;
  --warn: #f5c451;
  --ok: #4ade80;
  --stderr: #fdba74;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
  --ink2: #c3c7d0;
  --glow: 19%;
  --sk-hi: color-mix(in srgb, var(--fg) 10%, transparent);
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; touch-action: manipulation; }
body { -webkit-tap-highlight-color: transparent; }

body {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  background-image: radial-gradient(800px 420px at 8% -12%, color-mix(in srgb, #22d3ee var(--glow), transparent), transparent 65%), radial-gradient(900px 460px at 92% -10%, color-mix(in srgb, #a855f7 var(--glow), transparent), transparent 65%), radial-gradient(1100px 520px at 50% 115%, color-mix(in srgb, #6366f1 var(--glow), transparent), transparent 62%);
  color: var(--fg);
  font: 14px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
}

/* Header: the same logo, site links, theme button and phone menu as sspurlang.github.io */
.bar {
  position: sticky; top: 0; z-index: 22;
  display: flex; align-items: center; gap: 10px;
  min-height: 60px; padding: 0 12px 0 18px;
  background: var(--bar-bg);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.ic { width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.ic .fill { fill: currentColor; stroke: none; }
.logo { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; margin-right: 8px; color: var(--ink); text-decoration: none; font-family: var(--display); font-weight: 800; font-size: 1.3rem; letter-spacing: .04em; }
.logo img { display: block; transition: transform .5s var(--spring); }
.logo:active img { transform: scale(.88) rotate(-14deg); }
.spacer { flex: 1; }
.tools { display: flex; align-items: center; gap: 8px; }
.narrow-only { display: none !important; }
.sheet { display: contents; }
.sheet-h, .sheet-ed, .credit-card { display: none; }
.nav { display: flex; align-items: center; gap: 2px; min-width: 0; }
.nav-a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 13px; border-radius: 999px; text-decoration: none; font-weight: 600; font-size: .95rem; color: var(--ink2); white-space: nowrap; transition: background .2s, color .2s, transform .2s var(--spring); }
.nav-a.icon-a { width: 44px; padding: 0; }
.nav-a[aria-current=page] { color: var(--ink); background: var(--card2); }
@media (hover: hover) and (pointer: fine) { .nav-a:hover { background: var(--card2); color: var(--ink); } }
.nav-a:active { transform: scale(.94); }
.nav-a.sheet-only, .nav-a .tile { display: none; }
.theme, .menu-btn { width: 44px; height: 44px; padding: 0; border-radius: 14px; border: 0; background: transparent; color: var(--ink); display: grid; place-items: center; cursor: pointer; transition: transform .3s var(--spring); }
.theme .ic, .menu-btn .ic { grid-area: 1 / 1; }
.theme .ic { transition: transform .45s var(--spring), opacity .2s; }
.theme .moon { opacity: 0; transform: rotate(-90deg) scale(.5); }
.dark .theme .sun { opacity: 0; transform: rotate(90deg) scale(.5); }
.dark .theme .moon { opacity: 1; transform: none; }
@media (hover: hover) and (pointer: fine) { .theme:hover, .menu-btn:hover { background: var(--card2); } }
.theme:active, .menu-btn:active { transform: scale(.88); }
.menu-btn { display: none; }
.menu-btn .ic { transition: transform .3s var(--spring), opacity .15s; }
.menu-btn .x, .bar.open .menu-btn .bars { opacity: 0; transform: rotate(-90deg) scale(.6); }
.bar.open .menu-btn .x { opacity: 1; transform: none; }
.scrim { position: fixed; inset: 0; z-index: 21; background: rgba(10, 12, 18, .32); -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px); animation: fade .18s var(--ease); }
@keyframes fade { from { opacity: 0; } }

/* The menu: the site links, and on phones the editor's settings */
@media (max-width: 1180px) {
  .bar > .gh { display: none; }
  .menu-btn { display: grid; }
  .sheet {
    display: flex; flex-direction: column;
    position: absolute; top: calc(100% + 6px); right: 10px; width: 300px;
    max-height: calc(100dvh - 80px); overflow-y: auto; overscroll-behavior: contain;
    padding: 8px; border: 1px solid var(--border); border-radius: 18px;
    background: var(--panel-bg); box-shadow: var(--shadow), 0 18px 40px -12px rgba(0, 0, 0, .25);
    opacity: 0; transform: translateY(-6px); visibility: hidden;
    transition: opacity .16s, transform .2s var(--ease), visibility 0s .2s;
  }
  .bar.open .sheet { opacity: 1; transform: none; visibility: visible; transition: opacity .16s, transform .2s var(--ease); }
  .nav { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav .nav-a, .nav .nav-a.sheet-only { display: flex; justify-content: flex-start; gap: 14px; min-height: 52px; padding: 0 16px; border-radius: 14px; font-size: 1.06rem; }
  .nav .nav-a::after { content: "\203A"; margin-left: auto; font-size: 1.4rem; line-height: 1; color: var(--ink3); }
  .nav .nav-a.ext::after { content: "\2197"; font-size: 1.05rem; }
  .nav-a .tile { display: grid; place-items: center; width: 24px; height: 24px; flex: none; color: var(--c); }
  .nav-a .tile .ic { width: 22px; height: 22px; stroke-width: 2; }
  .dark .nav-a .tile { filter: brightness(1.45) saturate(.9); }
}

button, select {
  font: inherit; font-weight: 550;
  color: var(--fg);
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  height: 34px; padding: 0 13px;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.05s, background 0.15s;
}
button:hover, select:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); }
button:active { transform: translateY(1px); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[data-input="pointer"] :focus-visible { outline: none; }
button:disabled { opacity: 0.5; cursor: default; }
button.primary { color: #fff; border: none; background: var(--brand); padding: 0 16px; }
button.danger { color: var(--err); border-color: var(--err); }
button.icon { width: 34px; padding: 0; display: inline-grid; place-items: center; }
button.icon[aria-pressed="true"] { color: var(--accent); }
kbd { font: 600 11px var(--sans); margin-left: 9px; padding: 1px 6px; border-radius: 5px; background: rgba(255, 255, 255, 0.22); color: #fff; }

.ref { color: var(--muted); text-decoration: none; font-weight: 550; }
.ref:hover { color: var(--accent); }

.share-link {
  margin: 10px 18px 0; padding: 9px 14px;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel-bg); color: var(--muted);
  font: 12px var(--mono);
}

/* Workspace */
main { flex: 1; display: flex; min-height: 0; padding: 14px 18px; gap: 0; }
.pane {
  min-width: 0; min-height: 0;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
#editor { flex: 3 1 0; background: var(--editor-bg); }
#editor .cm-editor { height: 100%; }
#editor .cm-editor.cm-focused { outline: none; }
.side { flex: 2 1 0; display: flex; flex-direction: column; }

.split { flex: none; width: 14px; cursor: col-resize; display: grid; place-items: center; touch-action: none; }
.split::after { content: ""; width: 4px; height: 44px; border-radius: 4px; background: var(--border); transition: background 0.15s; }
.split:hover::after, .split.drag::after { background: var(--accent); }

.tabs { display: flex; gap: 4px; padding: 6px 8px; border-bottom: 1px solid var(--border); }
.tabs button { border: none; background: none; height: 32px; padding: 0 12px; border-radius: 8px; color: var(--muted); font-weight: 600; }
.tabs button:hover { color: var(--fg); background: color-mix(in srgb, var(--fg) 5%, transparent); }
.tabs button.on { color: var(--fg); background: color-mix(in srgb, var(--accent) 12%, transparent); }

.badge { display: inline-block; min-width: 1.5em; padding: 0 6px; margin-left: 4px; border-radius: 9px; background: var(--border); color: var(--fg); font-size: 11px; text-align: center; }
.badge:empty { display: none; }
.badge.err { background: var(--err); color: #fff; }

.panel { flex: 1; overflow: auto; padding: 14px 16px; }

#output { font: 13px/1.6 var(--mono); white-space: pre-wrap; word-break: break-word; }
.line.err { color: var(--err); }
.line.hint { color: var(--muted); }
.line.stderr { color: var(--stderr); }
.line.quiet { color: var(--muted); font-family: var(--sans); font-size: 12.5px; margin-top: 6px; }
.line.test { display: flex; align-items: baseline; gap: 10px; padding: 2px 0; }
.line.test .mark { font: 700 10.5px var(--sans); letter-spacing: 0.06em; text-transform: uppercase; padding: 1px 7px; border-radius: 999px; min-width: 3.6em; text-align: center; }
.line.pass .mark { color: var(--ok); background: color-mix(in srgb, var(--ok) 14%, transparent); }
.line.fail { color: var(--err); }
.line.fail .mark { color: var(--err); background: color-mix(in srgb, var(--err) 14%, transparent); }

.problem {
  display: grid; grid-template-columns: auto auto 1fr; gap: 2px 10px;
  width: 100%; height: auto; text-align: left;
  border: 1px solid var(--border); border-left: 3px solid var(--muted); border-radius: 10px;
  padding: 9px 12px; margin-bottom: 8px; background: var(--bg); font-weight: 400;
}
.problem.error { border-left-color: var(--err); }
.problem.warning { border-left-color: var(--warn); }
.problem .where { font: 12px var(--mono); color: var(--muted); }
.problem .code { font: 12px var(--mono); font-weight: 650; }
.problem .hint { grid-column: 3; color: var(--muted); font-size: 13px; }
.quiet { color: var(--muted); }

.prose { max-width: 46em; line-height: 1.65; }
.prose code { font: 12.5px var(--mono); background: var(--bg); padding: 1px 5px; border-radius: 5px; }
.prose a { color: var(--accent); }
.prose li { margin: 4px 0; }

/* Reformat on phones: a round button in the editor's corner, clear of the toolbar */
#editor { position: relative; }

/* Footer */
.status {
  display: flex; align-items: center; gap: 16px;
  padding: 0 18px 12px;
  color: var(--muted); font-size: 12px;
}
#engine { display: inline-flex; align-items: center; gap: 7px; }
#engine::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--warn); box-shadow: 0 0 0 3px color-mix(in srgb, var(--warn) 20%, transparent); }
#engine.ready::before { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 20%, transparent); }
.credit a { color: var(--fg); text-decoration: none; font-weight: 650; }
.status .toggle { height: 22px; padding: 0 9px; font-size: 12px; font-weight: 550; border-radius: 999px; color: var(--muted); background: none; border-color: var(--border); }
.status .toggle::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; opacity: 0.45; }
.status .toggle[aria-pressed="true"] { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.status .toggle[aria-pressed="true"]::before { opacity: 1; }
.credit a:hover { color: var(--accent); }

/* The editor's settings in the phone menu: one tap each, switches for the ones that stay on */
.sheet .row { display: flex; align-items: center; justify-content: flex-start; gap: 14px; width: 100%; min-height: 52px; height: auto; padding: 0 16px; border: 0; border-radius: 14px; background: none; color: var(--ink2); font-size: 1.06rem; font-weight: 600; text-align: left; }
.sheet .row .i { width: 24px; height: 23px; color: var(--ink2); }
.sheet .row:active { transform: none; background: var(--card2); }
@media (hover: hover) and (pointer: fine) { .sheet .row:hover { background: var(--card2); } }
.sheet .row.go::after { content: "\203A"; margin-left: auto; font-size: 1.4rem; line-height: 1; color: var(--ink3); }
.sw { position: relative; flex: none; margin-left: auto; width: 44px; height: 26px; border-radius: 999px; background: color-mix(in srgb, var(--fg) 16%, transparent); transition: background .2s; }
.sw::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, .3); transition: transform .25s var(--spring); }
.row[aria-checked="true"] .sw { background: linear-gradient(135deg, #22d3ee, #6366f1 55%, #a855f7); }
.row[aria-checked="true"] .sw::after { transform: translateX(18px); }
.sheet-h { margin: 12px 16px 4px; font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--ink3); }
.credit-card { margin: 14px 6px 2px; gap: 12px; align-items: center; padding: 14px; border: 1px solid var(--border); border-radius: 14px; background: var(--panel-bg); }
.avatar { flex: none; width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-weight: 700; letter-spacing: 0.02em; background: linear-gradient(135deg, #22d3ee, #6366f1 55%, #a855f7); }
.credit-card .who { font-weight: 700; }
.credit-card .role { color: var(--muted); font-size: 13px; }
.credit-card .reach { font-size: 13px; }
.credit-card a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; min-width: 44px; color: var(--accent); text-decoration: none; }

@media (max-width: 1100px) {
  .wide-xl { display: none !important; }
}
@media (max-width: 960px) {
  .tools kbd { display: none; }
  .pick { min-width: 132px; }
}

@media (max-width: 800px) {
  body { height: 100dvh; font-size: 15px; background-image: none; }
  .wide-only, .wide-xl, kbd { display: none !important; }
  .narrow-only { display: inline-grid !important; }
  .bar {
    display: grid; grid-template-columns: 1fr auto auto; grid-template-rows: 60px auto; gap: 0 2px;
    padding: env(safe-area-inset-top) calc(8px + env(safe-area-inset-right)) 10px calc(14px + env(safe-area-inset-left));
  }
  .bar .spacer { display: none; }
  .logo { grid-row: 1; grid-column: 1; justify-self: start; }
  #theme { grid-row: 1; grid-column: 2; }
  #menu { grid-row: 1; grid-column: 3; }
  .tools { grid-row: 2; grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr) minmax(0, 1.75fr); gap: 8px; margin-right: 4px; }
  .sheet { top: calc(60px + env(safe-area-inset-top)); left: 0; right: 0; width: auto; max-height: calc(100dvh - 60px - env(safe-area-inset-top)); padding: 4px max(10px, env(safe-area-inset-left)) calc(14px + env(safe-area-inset-bottom)); border: 0; border-bottom: 1px solid var(--border); border-radius: 0; background: var(--bg); box-shadow: var(--shadow); }
  .sheet-h { display: block; }
  .sheet-ed { display: flex; flex-direction: column; gap: 2px; }
  .credit-card { display: flex; }
  button, select { font-size: 16px; height: 44px; padding: 0 10px; border-radius: 11px; }
  .share-link { font-size: 16px; margin: 8px 12px 0; }
  main { flex-direction: column; padding: 0; }
  .pane { border-radius: 0; border-left: none; border-right: none; box-shadow: none; }
  .split { display: none; }
  #editor { flex: 1 1 55%; min-height: 220px; border-top: none; --editor-font: 16px; }
  #editor .cm-foldGutter { display: none; }
  .side { flex: 1 1 45%; min-height: 160px; border-top: none; }
  .tabs button { height: 38px; font-size: 15px; }
  #output { font-size: 14px; }
  .status {
    gap: 12px; font-size: 12.5px; white-space: nowrap;
    padding: 9px calc(12px + env(safe-area-inset-right)) calc(9px + env(safe-area-inset-bottom)) calc(12px + env(safe-area-inset-left));
    border-top: 1px solid var(--border); background: var(--panel-bg);
  }
  #engine { flex: none; }
}

@media (max-width: 400px) {
  .tools { gap: 6px; }
  button, select { padding: 0 8px; }
}

/* Icons */
.i { width: 16px; height: 16px; flex: none; }
button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; }
button.icon .i { width: 19px; height: 19px; }

/* Examples picker */
.picker { position: relative; }
.pick { min-width: 170px; justify-content: flex-start; }
.pick #pick-label { text-transform: capitalize; flex: 1; text-align: left; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pick .i:last-child { width: 14px; height: 14px; opacity: 0.6; transition: transform 0.15s; }
.pick[aria-expanded="true"] .i:last-child { transform: rotate(180deg); }
.pick-list {
  position: absolute; top: calc(100% + 6px); left: 0; z-index: 30;
  min-width: 100%; width: max-content; max-width: min(320px, 90vw); max-height: min(60vh, 420px); overflow-y: auto;
  margin: 0; padding: 6px; list-style: none;
  background: var(--panel-bg); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow), 0 16px 40px rgba(0, 0, 0, 0.14);
  animation: pop 0.12s ease-out; outline: none;
}
@keyframes pop { from { transform: translateY(-4px); opacity: 0; } to { transform: none; opacity: 1; } }
.pick-list .opt { padding: 8px 12px 8px 30px; border-radius: 8px; cursor: pointer; position: relative; white-space: nowrap; text-transform: capitalize; }
.pick-list .opt.hot { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.pick-list .opt[aria-selected="true"] { font-weight: 650; }
.pick-list .opt[aria-selected="true"]::before { content: ""; position: absolute; left: 11px; top: 50%; width: 7px; height: 7px; margin-top: -3.5px; border-radius: 50%; background: var(--accent); }

/* Run and Stop share one slot so nothing moves */
.runwrap { position: relative; display: grid; }
.runwrap > button { grid-area: 1 / 1; width: 100%; }
#stop[hidden] { display: inline-flex !important; visibility: hidden; pointer-events: none; }
#stop { position: relative; z-index: 1; background: var(--panel-bg); }
.runwrap > #run:disabled { pointer-events: none; }
#run:disabled { opacity: 1; }
button:disabled { cursor: progress; }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: calc(46px + env(safe-area-inset-bottom)); z-index: 40;
  display: flex; align-items: center; gap: 8px;
  transform: translateX(-50%); padding: 10px 16px; border-radius: 999px;
  background: var(--fg); color: var(--bg); font-weight: 600; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  animation: toast-in 0.18s ease-out;
}
.toast .i { width: 18px; height: 18px; color: var(--ok); }
.toast.out { opacity: 0; transform: translate(-50%, 6px); transition: opacity 0.25s, transform 0.25s; }
@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 8px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* Collapsible output (phones) */
.collapse { margin-left: auto; width: 40px; padding: 0 !important; color: var(--muted); }
.collapse .i { transition: transform 0.2s; }
.side.collapsed .collapse .i { transform: rotate(180deg); }

@media (max-width: 800px) {
  .pick { min-width: 0; width: 100%; }
  .pick-list { max-width: calc(100vw - 24px); }
  .pick-list .opt { padding: 12px 14px 12px 32px; font-size: 16px; }
  .side.collapsed { flex: 0 0 auto; min-height: 0; }
  .side.collapsed .panel { display: none; }
  .side.collapsed .tabs { border-bottom: none; }
  #editor { transition: flex-basis 0.2s; }
  .tools .i { width: 17px; height: 17px; }
}
@media (max-width: 400px) {
  .tools button .i + span { display: inline; }
  .pick .i:first-child { display: none; }
  button { gap: 5px; }
}

/* Program input */
.panel.inbox { padding: 0; display: flex; flex-direction: column; }
.inbar { display: flex; align-items: center; gap: 10px; padding: 8px 12px 8px 16px; border-bottom: 1px solid var(--border); }
.inlabel { display: inline-flex; align-items: center; gap: 7px; font: 600 12px var(--mono); color: var(--fg); }
.inlabel .i { width: 14px; height: 14px; color: var(--accent); }
.inmeta { font-size: 12px; color: var(--muted); padding: 1px 8px; border-radius: 999px; background: color-mix(in srgb, var(--fg) 6%, transparent); }
button.ghost { height: 28px; padding: 0 10px; font-size: 12.5px; border-color: transparent; background: none; color: var(--muted); }
button.ghost:hover { color: var(--fg); background: color-mix(in srgb, var(--fg) 6%, transparent); border-color: transparent; }
#stdin {
  flex: 1; min-height: 120px; width: 100%; resize: none; margin: 0;
  font: var(--editor-font, 14px)/1.55 var(--mono); color: var(--fg); background: var(--editor-bg);
  border: none; border-radius: 0; padding: 12px 16px; outline: none; tab-size: 4;
  caret-color: var(--accent);
}
#stdin::placeholder { color: var(--muted); opacity: 0.7; }
#stdin:focus-visible { box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--accent) 35%, transparent); }
.inhint { padding: 8px 16px; border-top: 1px solid var(--border); font-size: 12px; color: var(--muted); }
.inhint code { font: 11.5px var(--mono); background: color-mix(in srgb, var(--fg) 6%, transparent); padding: 1px 5px; border-radius: 5px; }
.dot { display: inline-block; width: 7px; height: 7px; margin-left: 5px; border-radius: 50%; background: var(--accent); vertical-align: 1px; }
@media (max-width: 800px) {
  #stdin { font-size: 16px; }
  .inbar { padding: 6px 8px 6px 14px; }
  .inhint { display: none; }
  .tabs button { padding: 0 10px; }
}

/* Loading: skeletons in the boxes the editor and output will fill, and controls that pulse until
   they work, so nothing moves when the real content fades in */
.cm-editor :focus-visible { outline: none; }
.skel { position: absolute; inset: 0; z-index: 2; padding: 12.5px 0 0; background: var(--editor-bg); pointer-events: none; overflow: hidden; transition: opacity .2s var(--ease); }
.skel.out { opacity: 0; }
.skel i { position: relative; display: block; width: var(--w); height: 9px; margin: 0 0 13px 52px; border-radius: 5px; background: var(--sk); overflow: hidden; }
.skel::before { content: ""; position: absolute; left: 16px; top: 12.5px; width: 14px; height: 207px; background: repeating-linear-gradient(var(--sk) 0 9px, transparent 9px 22px); }
.skel i.gap { background: none; }
.skel i::after { content: ""; position: absolute; inset: 0 auto 0 0; width: 160px; background: linear-gradient(90deg, transparent, var(--sk-hi), transparent); transform: translateX(-160px); animation: shim 1.4s var(--ease) infinite; }
.skel i.gap::after { display: none; }
@keyframes shim { to { transform: translateX(100vw); } }
.skel-out { position: static; padding: 0; background: none; }
.skel-out i { height: 10px; margin: 6px 0 14px; }
.skel-out::before { display: none; }
button.wait:disabled { opacity: .55; cursor: progress; animation: wait 1.2s ease-in-out infinite alternate; }
@keyframes wait { to { opacity: .8; } }
@media (prefers-reduced-motion: reduce) {
  .skel i::after { display: none; animation: none; }
  button.wait:disabled { animation: none; }
  .skel, .theme .ic, .menu-btn .ic, .sheet, .sw, .sw::after { transition: none !important; }
}

/* The empty Output tab */
.empty { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font: 13.5px/1.5 var(--sans); color: var(--muted); }
.empty kbd { margin: 0; min-width: 22px; padding: 1px 6px; text-align: center; font: 600 12px/18px var(--sans); color: var(--fg); background: var(--panel-bg); border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 6px; }
.empty .keys { display: inline-flex; gap: 3px; margin-left: 4px; }

@media (max-width: 800px) {
  .tabs button { height: 44px; }
  .collapse { width: 44px; }
  button.ghost { height: 44px; }
  .empty kbd, .empty .keys { display: none !important; }
  .status { padding-top: 0; padding-bottom: env(safe-area-inset-bottom); }
  .credit a { display: inline-flex; align-items: center; min-height: 44px; }
}

/* Toolbar: soft buttons as on the sites, Run in the brand gradient, the code actions in one group */
.tools button { height: 38px; border: 0; border-radius: 12px; background: var(--card2); font-weight: 650; transition: transform .2s var(--spring), background .2s, box-shadow .2s, filter .2s; }
.tools button:active { transform: scale(.95); }
.tools button.primary { background: var(--brand); color: #fff; padding: 0 18px; box-shadow: 0 8px 20px -10px rgba(99, 102, 241, .8), inset 0 1px rgba(255, 255, 255, .25); }
.tools #stop { color: var(--err); background: color-mix(in srgb, var(--err) 13%, var(--panel-bg)); }
.seg { display: flex; gap: 2px; padding: 3px; border-radius: 14px; background: var(--card2); }
.seg button { height: 32px; padding: 0 12px; border-radius: 10px; background: none; }
.seg .i { color: var(--accent); }
@media (hover: hover) and (pointer: fine) {
  .tools button:hover { border: 0; background: color-mix(in srgb, var(--fg) 12%, transparent); }
  .tools button.primary:hover { background: var(--brand); filter: brightness(1.08) saturate(1.05); box-shadow: 0 12px 26px -10px rgba(99, 102, 241, .95), inset 0 1px rgba(255, 255, 255, .25); }
  .seg button:hover { background: var(--panel-bg); box-shadow: 0 1px 2px rgba(0, 0, 0, .08), 0 2px 8px -4px rgba(0, 0, 0, .2); }
  .tools button:hover .i { transform: scale(1.12); }
}
.tools .i { transition: transform .2s var(--spring); }
@media (max-width: 800px) {
  .tools button { height: 44px; border-radius: 14px; font-size: 15.5px; }
  .seg { padding: 0; gap: 0; overflow: hidden; }
  .seg button { flex: 1 1 0; min-width: 0; height: 44px; border-radius: 0; }
  .seg button + button:not([hidden]):not(.wide-only) { box-shadow: inset 1px 0 color-mix(in srgb, var(--fg) 10%, transparent); }
}

/* The editor's frame takes the brand gradient while you type in it */
#editor { transition: box-shadow .25s var(--ease); }
#editor:focus-within { border-color: transparent; background: linear-gradient(var(--editor-bg), var(--editor-bg)) padding-box, var(--brand) border-box; box-shadow: var(--shadow), 0 0 0 4px color-mix(in srgb, #6366f1 12%, transparent); }
.empty .glyph { display: inline-grid; place-items: center; width: 22px; height: 22px; margin-right: 4px; border-radius: 50%; background: var(--brand); color: #fff; box-shadow: 0 4px 12px -4px rgba(99, 102, 241, .8); }
.empty .glyph .i { width: 11px; height: 11px; margin-left: 1px; }
.burst { position: fixed; z-index: 50; width: 22px; height: 22px; pointer-events: none; }
@media (max-width: 800px) {
  #editor:focus-within { box-shadow: none; border-image: none; background: var(--editor-bg); border-color: var(--border); }
}
@media (max-width: 400px) {
  .tools button.primary { padding: 0 10px; }
}
@media (max-width: 360px) {
  .seg .i, #tokens { display: none; }
  .tabs { padding: 6px 4px; gap: 2px; }
  .tabs button { padding: 0 7px; font-size: 14px; }
}

/* Phones and tablets: a quiet toolbar. The example is a title-like menu, the code actions are
   plain icon buttons, and Run is the one filled button, on the right under the thumb. */
@media (max-width: 800px) {
  .tools { display: flex; align-items: center; gap: 2px; margin-right: 0; }
  .picker { flex: 1 1 auto; min-width: 0; }
  .tools .pick { width: auto; max-width: 100%; height: 44px; padding: 0 6px 0 2px; gap: 5px; background: none; font-size: 17px; font-weight: 700; color: var(--fg); justify-content: flex-start; }
  .tools .pick .i:first-child { display: none; }
  .tools .seg { display: flex; gap: 0; padding: 0; background: none; border-radius: 0; }
  .tools .seg button, .tools .seg button.wide-only { display: inline-grid !important; place-items: center; width: 44px; height: 44px; padding: 0; border-radius: 12px; background: none; }
  .tools .seg button .i + span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .tools .seg .i { width: 21px; height: 21px; }
  .tools .seg button, .tools .seg button:hover { border: 0; box-shadow: none !important; }
  .tools .seg button:active { background: var(--card2); }
  .tools .seg { order: 1; margin-left: auto; }
  .runwrap { order: 2; flex: none; margin-left: 6px; }
  .tools button.primary, .tools #stop { height: 44px; padding: 0 18px; border-radius: 14px; }
}
@media (hover: none) { kbd, .empty .keys { display: none !important; } }
@media (max-width: 359px) { .tools button.primary, .tools #stop { padding: 0 13px; } }