:root {
  color-scheme: dark;
  --ink: #f2f5ef;
  --muted: #98a49d;
  --carbon: #101613;
  --carbon-2: #18211c;
  --line: rgba(225, 235, 227, .16);
  --green: #b6ed76;
  --signal: #f15a38;
  --amber: #f0c04a;
  font-family: "Familjen Grotesk", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--carbon); color: var(--ink); }
body { overflow: hidden; }
button, a, select { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 20; padding: .75rem 1rem; background: var(--ink); color: var(--carbon); }
.skip-link:focus { top: 1rem; }
main { min-height: 100dvh; }

.topbar {
  position: fixed; z-index: 10; inset: 0 0 auto; height: 72px;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 0 34px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(16, 22, 19, .94), rgba(16, 22, 19, .68)); backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 10px; width: max-content; color: inherit; text-decoration: none; }
.brand svg { width: 20px; height: 20px; fill: currentColor; }
.brand strong { font-size: 13px; font-weight: 600; letter-spacing: .04em; }
.brand span { font-size: 13px; font-weight: 500; opacity: .6; }
.doc-id, .back-link { font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: .05em; color: var(--muted); }
.back-link { justify-self: end; text-decoration: none; }
.back-link:hover { color: var(--ink); }

.stage { position: relative; height: 100dvh; }
canvas { display: block; width: 100%; height: 100%; }

.loading, .error {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); z-index: 6;
  display: flex; align-items: center; gap: 12px; padding: 14px 20px;
  border: 1px solid var(--line); background: rgba(16, 22, 19, .92);
  font-family: "IBM Plex Mono", monospace; font-size: 12px;
}
.loading.done { display: none; }
/* Klasa z display: flex bije domyślne [hidden] przeglądarki — bez tego
   panel błędu wisiałby na ekranie także przy poprawnym wczytaniu. */
.error[hidden] { display: none; }
.loading span { width: 9px; height: 9px; border-radius: 50%; background: var(--green); animation: pulse 1.1s ease-in-out infinite; }
.error { border-color: var(--signal); color: var(--signal); max-width: 420px; text-align: center; }
@keyframes pulse { 0%, 100% { opacity: .25; } 50% { opacity: 1; } }

.intro { position: absolute; left: 34px; top: 108px; z-index: 5; max-width: 380px; pointer-events: none; }
.intro .eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; font-family: "IBM Plex Mono", monospace; font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.intro .eyebrow i { width: 22px; height: 1px; background: var(--green); }
.intro h1 { margin: 0; font-size: clamp(34px, 3.4vw, 52px); font-weight: 500; line-height: .96; letter-spacing: -.045em; }
.intro h1 em { font-style: normal; color: var(--green); }
.intro > p { margin: 20px 0 0; color: #b8c6c0; font-size: 15px; line-height: 1.5; }
.presets { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; pointer-events: auto; }
.presets button { padding: 9px 14px; border: 1px solid var(--line); background: rgba(16, 22, 19, .7); font-size: 12px; cursor: pointer; transition: .18s ease; }
.presets button:hover { border-color: var(--green); }
.presets button.active { background: var(--green); border-color: var(--green); color: var(--carbon); font-weight: 600; }

.report {
  position: absolute; right: 34px; top: 108px; z-index: 5; width: 320px;
  padding: 20px; border: 1px solid var(--line); background: rgba(16, 22, 19, .88); backdrop-filter: blur(14px);
}
.verdict { margin: 0 0 14px; font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
.verdict[data-state="ok"] { color: var(--green); }
.verdict[data-state="warn"] { color: var(--amber); }
.verdict[data-state="error"] { color: var(--signal); }
.issues { margin: 0 0 18px; padding: 0; list-style: none; display: grid; gap: 9px; }
.issues li { padding-left: 14px; position: relative; font-size: 13px; line-height: 1.45; color: #b8c6c0; }
.issues li::before { content: ""; position: absolute; left: 0; top: .48em; width: 6px; height: 6px; border-radius: 50%; }
.issues li[data-kind="ok"]::before { background: var(--green); }
.issues li[data-kind="warn"]::before { background: var(--amber); }
.issues li[data-kind="error"]::before { background: var(--signal); }
.issues li[data-kind="error"] { color: #f0cfc6; }
.totals { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.totals > div { display: flex; align-items: baseline; gap: 7px; }
.totals strong { font-size: 21px; font-weight: 500; letter-spacing: -.03em; }
.totals span { font-family: "IBM Plex Mono", monospace; font-size: 9px; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }

.controls { position: absolute; left: 34px; right: 34px; bottom: 26px; z-index: 5; display: flex; align-items: flex-end; justify-content: space-between; gap: 26px; flex-wrap: wrap; }
.control-label { display: block; margin-bottom: 9px; font-family: "IBM Plex Mono", monospace; font-size: 9px; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); }
.slot-grid { display: grid; grid-template-columns: repeat(3, minmax(140px, 190px)); gap: 8px; }
.slot { display: grid; gap: 5px; }
.slot > span { font-family: "IBM Plex Mono", monospace; font-size: 9px; letter-spacing: .06em; color: var(--muted); }
.slot select { width: 100%; padding: 9px 10px; border: 1px solid var(--line); background: rgba(16, 22, 19, .9); color: var(--ink); font-size: 12px; cursor: pointer; }
.slot select:focus-visible { outline: 2px solid var(--green); outline-offset: 1px; }
.utility-button { padding: 11px 16px; border: 1px solid var(--line); background: rgba(16, 22, 19, .8); font-size: 12px; cursor: pointer; }
.utility-button:hover { border-color: var(--green); }

.status { position: absolute; right: 34px; bottom: 96px; z-index: 4; display: flex; align-items: center; gap: 9px; font-family: "IBM Plex Mono", monospace; font-size: 10px; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
.status i { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }

@media (max-width: 1100px) {
  .report { position: static; width: auto; margin: 0 20px; }
  .intro { position: static; padding: 96px 20px 0; max-width: none; }
  .stage { height: auto; min-height: 100dvh; display: grid; grid-template-rows: 52vh auto auto auto; }
  canvas { height: 52vh; }
  .controls { position: static; padding: 20px; }
  .slot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .status { position: static; padding: 0 20px 24px; }
  body { overflow: auto; }
}
@media (max-width: 620px) { .slot-grid { grid-template-columns: minmax(0, 1fr); } .topbar { padding: 0 20px; } .brand span { display: none; } }