:root { color-scheme: dark; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: #01020a; color: #fff; }
* { box-sizing: border-box; }
body { margin: 0; }
main { position: fixed; inset: 0; display: grid; grid-template-columns: minmax(0, 1fr) 280px; }
.viewport { position: relative; min-width: 0; min-height: 0; }
canvas { display: block; width: 100%; height: 100%; }
header { position: absolute; top: max(20px, env(safe-area-inset-top)); left: max(20px, env(safe-area-inset-left)); pointer-events: none; }
h1 { margin: 0; font-size: 13px; font-weight: 600; letter-spacing: .025em; }
header p { margin: 5px 0 0; font-size: 12px; color: #a3a3ad; }
button { min-height: 44px; padding: 10px 12px; border: 1px solid #ffffff30; border-radius: 6px; background: #080b12cc; color: #c7c9d1; font: inherit; font-size: 14px; cursor: pointer; }
button:hover { background: #171b28; color: white; }
button:focus-visible { outline: 2px solid #b2cfff; outline-offset: 4px; }
#error { position: absolute; top: 45%; left: 10%; right: 10%; text-align: center; line-height: 1.8; font-size: 16px; }
aside { overflow-y: auto; background: #090c13; border-left: 1px solid #ffffff18; padding: max(28px, env(safe-area-inset-top)) 24px max(24px, env(safe-area-inset-bottom)); }
h2 { font-size: 16px; font-weight: 500; margin: 0 0 32px; }
fieldset { min-width: 0; margin: 0; border: 0; padding: 0; }
.control { margin-bottom: 24px; }
label { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px; font-size: 14px; }
label span { color: #a3a9ba; font-size: 12px; }
output { font-variant-numeric: tabular-nums; }
label output { margin-left: auto; color: #c3d6ff; }
input[type=range] { display: block; width: 100%; min-height: 44px; margin: 4px 0 0; accent-color: #aac5ff; cursor: pointer; }
input:focus-visible { outline: 2px solid #b2cfff; outline-offset: 2px; border-radius: 3px; }
.limits { display: flex; justify-content: space-between; color: #8e96a8; font-size: 12px; }
.total { display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; border-top: 1px solid #ffffff18; padding-top: 20px; font-size: 14px; }
.hint { color: #929aab; font-size: 12px; line-height: 1.7; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.actions button { flex: 1; }
@media (max-width: 700px) {
  main { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(160px, 1fr) auto; overflow-y: auto; }
  aside { max-height: 48dvh; border-left: 0; border-top: 1px solid #ffffff18; padding: 16px 20px max(16px, env(safe-area-inset-bottom)); }
  h2 { margin-bottom: 16px; }
  fieldset { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 20px; }
  .control { margin: 0; }
  .total { grid-column: 1 / -1; margin: 0; padding-top: 12px; }
  .hint { grid-column: 1 / -1; margin: 0; }
  .actions { grid-column: 1 / -1; margin: 0; }
}