:root {
  color-scheme: dark;
  --ink: #171a20;
  --panel: #252a32;
  --panel-light: #353c46;
  --cream: #f0dfb2;
  --amber: #e0a744;
  --rust: #9d4638;
  --teal: #59b7ad;
  --line: rgba(240, 223, 178, 0.24);
  font-family: "SFMono-Regular", "Cascadia Mono", "Roboto Mono", monospace;
  background: #111419;
}

* { box-sizing: border-box; }

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  display: grid;
  place-items: center;
  min-height: 100svh;
  padding: max(10px, env(safe-area-inset-top)) max(10px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left));
  overflow-x: hidden;
  background:
    radial-gradient(circle at 50% -20%, rgba(112, 126, 139, 0.24), transparent 52%),
    repeating-linear-gradient(90deg, transparent 0 79px, rgba(255, 255, 255, 0.015) 80px),
    #111419;
}

button { font: inherit; }

.arc-cabinet {
  width: min(1180px, 100%);
  overflow: hidden;
  border: 2px solid #090b0e;
  border-radius: 18px;
  background: var(--panel);
  box-shadow:
    inset 2px 2px rgba(255, 255, 255, 0.08),
    inset -3px -4px rgba(0, 0, 0, 0.34),
    0 18px 55px rgba(0, 0, 0, 0.48);
}

.arc-cabinet__header {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 16px;
  min-height: 74px;
  padding: 10px 12px;
  border-bottom: 2px solid #0c0f13;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent),
    var(--panel-light);
}

.arc-nameplate {
  flex: 1;
  min-width: 0;
  padding: 8px 13px 6px;
  border: 1px solid #0c0e11;
  color: var(--cream);
  background: #171b21;
  box-shadow: inset 0 0 0 2px rgba(240, 223, 178, 0.08);
}

.arc-nameplate small,
.arc-nameplate h1 { margin: 0; }

.arc-nameplate small {
  display: block;
  color: #9ca6a9;
  font-size: 10px;
  letter-spacing: 0.13em;
}

.arc-nameplate h1 {
  margin-top: 4px;
  font-size: clamp(20px, 3vw, 31px);
  line-height: 1;
  letter-spacing: 0.08em;
}

.arc-header-actions {
  display: flex;
  gap: 8px;
}

.arc-utility {
  display: grid;
  min-width: 76px;
  padding: 7px 9px;
  border: 1px solid #0a0c0f;
  color: var(--cream);
  background: #1a1e24;
  box-shadow: inset 1px 1px rgba(255, 255, 255, 0.07), 0 3px #111419;
  cursor: pointer;
  text-decoration: none;
}

.arc-utility span {
  color: #9ca6a9;
  font-size: 8px;
  letter-spacing: 0.12em;
}

.arc-utility strong {
  align-self: end;
  font-size: 15px;
}

.arc-screen {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 10px solid #171a1e;
  background: #0b0d10;
  box-shadow: inset 0 0 22px rgba(0, 0, 0, 0.86);
}

.arc-screen::after {
  content: "";
  position: absolute;
  z-index: 4;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.12) 0 1px, transparent 1px 4px),
    radial-gradient(ellipse at center, transparent 58%, rgba(0, 0, 0, 0.32));
  mix-blend-mode: multiply;
}

#arc-canvas {
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  touch-action: none;
  cursor: grab;
}

#arc-canvas.is-dragging { cursor: grabbing; }

#arc-canvas:focus-visible {
  box-shadow: inset 0 0 0 3px var(--cream);
}

.arc-result {
  position: absolute;
  z-index: 6;
  inset: 50% auto auto 50%;
  display: grid;
  width: min(390px, calc(100% - 34px));
  padding: 20px;
  border: 2px solid var(--cream);
  color: var(--cream);
  background: rgba(23, 26, 32, 0.95);
  box-shadow: 8px 8px 0 rgba(23, 26, 32, 0.56);
  transform: translate(-50%, -50%);
  text-align: center;
}

.arc-result[hidden] { display: none; }

.arc-result small {
  color: var(--amber);
  font-size: 10px;
  letter-spacing: 0.13em;
}

.arc-result strong {
  margin-top: 8px;
  font-size: clamp(22px, 4vw, 38px);
}

.arc-result span {
  margin: 8px 0 18px;
  color: #c9c8b6;
  font-size: 12px;
}

.arc-result button,
.arc-throw {
  min-height: 48px;
  border: 2px solid #6d2a22;
  color: #fff1cf;
  background: var(--rust);
  box-shadow: inset 2px 2px rgba(255, 255, 255, 0.13), 0 4px #411d19;
  font-weight: 900;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.arc-result button:active,
.arc-throw:active { translate: 0 3px; box-shadow: inset 2px 2px rgba(0, 0, 0, 0.2), 0 1px #411d19; }

.arc-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(112px, 0.24fr);
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  padding: 12px 14px 15px;
  border-top: 2px solid #0c0f13;
  background: var(--panel-light);
}

.arc-instruction {
  display: grid;
  gap: 5px;
  min-width: 0;
}

.arc-instruction small {
  color: #9ca6a9;
  font-size: 9px;
  letter-spacing: 0.09em;
}

.arc-instruction strong {
  overflow: hidden;
  color: var(--cream);
  font-size: clamp(11px, 1.5vw, 15px);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.arc-readout {
  display: flex;
  gap: 18px;
  color: #aeb4b3;
  font-size: 9px;
  letter-spacing: 0.08em;
}

.arc-readout span { display: grid; gap: 3px; }
.arc-readout strong { color: var(--teal); font-size: 15px; }

.arc-throw { min-width: 112px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 660px) {
  body { align-content: start; padding: 0; background: #111419; }
  .arc-cabinet { border: 0; border-radius: 0; box-shadow: none; }
  .arc-cabinet__header { min-height: 57px; padding: 6px; gap: 6px; }
  .arc-nameplate { padding: 6px 8px; }
  .arc-nameplate small { font-size: 7px; }
  .arc-nameplate h1 { font-size: 18px; }
  .arc-header-actions { gap: 5px; }
  .arc-utility { min-width: 56px; padding: 4px 6px; }
  .arc-utility span { font-size: 6px; }
  .arc-utility strong { font-size: 12px; }
  .arc-screen { border-width: 5px; }
  .arc-controls {
    grid-template-columns: 1fr 94px;
    gap: 8px 12px;
    padding: 9px 8px max(10px, env(safe-area-inset-bottom));
  }
  .arc-instruction strong { white-space: normal; }
  .arc-readout { grid-column: 1; grid-row: 2; }
  .arc-throw { grid-column: 2; grid-row: 1 / 3; min-width: 0; height: 100%; }
}

@media (orientation: landscape) and (max-height: 540px) {
  body { padding: 0; }
  .arc-cabinet {
    display: grid;
    grid-template-columns: 1fr minmax(164px, 22vw);
    grid-template-rows: 48px 1fr;
    width: 100%;
    height: 100svh;
    border: 0;
    border-radius: 0;
  }
  .arc-cabinet__header { grid-column: 1 / -1; min-height: 48px; padding: 4px 6px; }
  .arc-nameplate { padding: 4px 8px; }
  .arc-nameplate small { font-size: 6px; }
  .arc-nameplate h1 { margin-top: 2px; font-size: 16px; }
  .arc-utility { min-width: 58px; padding: 2px 5px; }
  .arc-screen { align-self: center; border-width: 5px; }
  .arc-controls {
    grid-template-columns: 1fr;
    align-content: center;
    padding: 10px;
  }
  .arc-instruction strong {
    overflow: visible;
    text-overflow: clip;
    white-space: normal;
  }
  .arc-readout { grid-column: auto; grid-row: auto; }
  .arc-throw { grid-column: auto; grid-row: auto; min-height: 58px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; }
}