:root {
  color-scheme: dark;
  --bg: #0c0f14;
  --panel: #161b22;
  --panel-2: #1d232d;
  --text: #edf2f7;
  --muted: #9aa7b8;
  --accent: #7fb3ff;
  --border: #26303c;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font-family: Inter, system-ui, sans-serif; height: 100%; }
body { display: flex; flex-direction: column; }
button, input, label { font: inherit; }
button { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); border-radius: 12px; padding: 0.65rem 0.85rem; }
button.active { background: #203b61; border-color: #35598b; }
button.ghost { background: transparent; }
.topbar {
  display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 0.75rem;
  padding: max(12px, env(safe-area-inset-top)) 12px 12px;
  border-bottom: 1px solid var(--border); background: rgba(15,18,23,0.95); position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 800; letter-spacing: 0.02em; }
.brand span { color: var(--accent); font-size: 0.85rem; margin-left: 0.25rem; }
.side-toggle { display: flex; gap: 0.5rem; }
.app-shell { display: grid; grid-template-rows: auto 1fr auto; gap: 10px; padding: 10px; min-height: 0; flex: 1; }
.toolbar { display: flex; gap: 0.5rem; overflow-x: auto; padding-bottom: 2px; }
.toolbar > * { flex: 0 0 auto; }
.file-btn { display: inline-flex; align-items: center; padding: 0.65rem 0.85rem; background: var(--panel-2); border: 1px solid var(--border); border-radius: 12px; }
.file-btn input { display: none; }
.viewer-wrap { position: relative; min-height: 52vh; background: var(--panel); border: 1px solid var(--border); border-radius: 18px; overflow: hidden; }
canvas { width: 100%; height: 100%; display: block; touch-action: none; }
.statusbar {
  position: absolute; left: 10px; right: 10px; bottom: 10px; background: rgba(13,18,26,0.78);
  border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; padding: 0.45rem 0.7rem; color: var(--muted); font-size: 0.9rem;
}
.results { display: grid; gap: 10px; grid-template-columns: 1fr; }
.result-card { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 12px; }
.result-card h3 { margin: 0 0 0.5rem; font-size: 1rem; }
.result-grid { display: grid; grid-template-columns: auto 1fr; gap: 0.35rem 0.75rem; }
.settings-panel {
  position: fixed; inset: 0; background: rgba(5,7,10,0.92); z-index: 30; padding: max(14px, env(safe-area-inset-top)) 14px 14px; overflow: auto;
}
.settings-panel.hidden { display: none; }
.settings-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.settings-grid { display: grid; gap: 12px; }
.settings-grid label { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 12px; display: grid; gap: 8px; }
.settings-grid input[type="range"] { width: 100%; }
.checkbox-row { grid-template-columns: auto 1fr; align-items: center; }
.kbd { font-family: ui-monospace, monospace; background: #11161d; border: 1px solid var(--border); border-radius: 6px; padding: 0 0.35rem; }
@media (min-width: 960px) {
  .results { grid-template-columns: 1fr 1fr; }
  .viewer-wrap { min-height: 68vh; }
}