/* Brandon OS brand tokens — "Dark Celestial Instrument". Shared by Toolbox and Arcade. */
@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400..700;1,9..144,400..700&family=Hanken+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;600;700&display=swap");

:root {
  --void: #14110d;
  --panel: #1c1813;
  --panel-2: #221d17;
  --line: #2c271f;
  --line-2: #3a3329;
  --ink: #eadfc9;
  --parchment: #f1e7d3;
  --stone: #b7a98d;
  --mute: #756b59;
  --teal: #3fbfb0;
  --teal-mid: #2a7d74;
  --teal-deep: #1f5f5a;
  --gold: #fcbb00;
  --ochre: #c68a3a;
  --oak: #a9743f;
  --sage: #5c8654;
  --terracotta: #b14e38;
  --font-display: "Fraunces", Georgia, serif;
  --font-sans: "Hanken Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--void);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
  line-height: 1.5;
}
a { color: var(--teal); }
::selection { background: var(--teal-deep); color: var(--parchment); }

.mono { font-family: var(--font-mono); }
.display { font-family: var(--font-display); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mute);
}
.muted { color: var(--mute); }
.stone { color: var(--stone); }

/* Panels: square corners, 1px rules — BOS look */
.card { background: var(--panel); border: 1px solid var(--line); padding: 20px; }
.rule { border: 0; border-top: 1px solid var(--line); margin: 16px 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 36px; padding: 0 14px;
  border: 1px solid var(--line-2); background: transparent; color: var(--ink);
  font: 500 14px var(--font-sans); cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { background: var(--panel-2); border-color: var(--stone); }
.btn:focus-visible { outline: 1px solid var(--teal); outline-offset: 2px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--teal-deep); border-color: var(--teal-mid); color: var(--parchment); }
.btn.primary:hover { background: var(--teal-mid); border-color: var(--teal); }
.btn.gold { border-color: var(--ochre); color: var(--gold); }
.btn.gold:hover { background: rgba(198,138,58,.12); }
.btn.sm { height: 30px; padding: 0 10px; font-size: 13px; }

/* Inputs */
.input, select.input, textarea.input {
  width: 100%; height: 38px; padding: 0 12px;
  background: var(--void); color: var(--ink);
  border: 1px solid var(--line-2); font: 14px var(--font-sans);
}
textarea.input { height: auto; padding: 10px 12px; }
.input:focus { outline: none; border-color: var(--teal); }
label.field { display: block; margin-bottom: 14px; }
label.field > span { display: block; margin-bottom: 6px; }

/* Tags */
.tag {
  display: inline-block; font: 600 10px var(--font-mono); letter-spacing: .12em;
  text-transform: uppercase; padding: 2px 6px; border: 1px solid var(--line-2); color: var(--stone);
}
.tag.teal { border-color: var(--teal-mid); color: var(--teal); }
.tag.gold { border-color: var(--ochre); color: var(--gold); }

/* ——— App shell: left menu + tool frame ——— */
.shell { display: grid; grid-template-columns: 260px 1fr; height: 100vh; height: 100dvh; }
.side {
  position: relative; overflow: hidden;
  border-right: 1px solid var(--line); background: var(--panel);
  display: flex; flex-direction: column; min-height: 0;
}
.side canvas.sky { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; opacity: .55; }
.side > * { position: relative; }
.brand { padding: 22px 20px 18px; border-bottom: 1px solid var(--line); }
.brand h1 { margin: 0; font: 700 18px var(--font-mono); letter-spacing: -.01em; color: var(--teal); }
.brand p { margin: 6px 0 0; font: italic 14px var(--font-display); color: var(--stone); }
.nav { flex: 1; overflow-y: auto; padding: 10px 0 16px; }
.nav .group { padding: 14px 20px 6px; }
.nav a.item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 20px 9px 17px; border-left: 3px solid transparent;
  color: var(--ink); text-decoration: none; font-size: 14px;
}
.nav a.item .ico { width: 18px; text-align: center; font-family: var(--font-mono); color: var(--stone); }
.nav a.item .st { margin-left: auto; }
.nav a.item:hover { background: var(--panel-2); }
.nav a.item.active { border-left-color: var(--teal); background: rgba(63,191,176,.07); }
.nav a.item.active .ico { color: var(--teal); }
.side .foot { padding: 12px 20px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.main { position: relative; min-width: 0; min-height: 0; display: flex; flex-direction: column; }
.main iframe { flex: 1; width: 100%; border: 0; background: var(--void); }
.topbar { display: none; }

@media (max-width: 820px) {
  .shell { grid-template-columns: 1fr; grid-template-rows: minmax(0, 1fr); }
  .side { position: fixed; inset: 0 auto 0 0; width: 280px; z-index: 20; transform: translateX(-100%); transition: transform .2s; }
  .shell.open .side { transform: none; box-shadow: 0 0 0 100vmax rgba(0,0,0,.55); }
  .topbar { display: flex; align-items: center; gap: 12px; height: 52px; padding: 0 12px; border-bottom: 1px solid var(--line); background: var(--panel); }
  .topbar b { font: 700 15px var(--font-mono); color: var(--teal); }
}

/* ——— Tool / game page chrome (inside the frame) ——— */
.page { max-width: 1100px; margin: 0 auto; padding: 28px 28px 60px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 22px; }
.page-head h2 { margin: 4px 0 0; font: 600 28px/1.15 var(--font-display); color: var(--parchment); }
.page-head p { margin: 6px 0 0; color: var(--stone); max-width: 640px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.drop {
  border: 1px dashed var(--line-2); background: var(--panel); padding: 34px 20px; text-align: center;
  color: var(--stone); cursor: pointer; transition: border-color .15s, background .15s;
}
.drop:hover, .drop.over { border-color: var(--teal); background: rgba(63,191,176,.05); }
.drop b { color: var(--ink); }
.readout { font: 600 13px var(--font-mono); color: var(--teal); }
@media (max-width: 600px) { .page { padding: 18px 14px 50px; } .page-head h2 { font-size: 23px; } }