:root {
  --face: #c0c0c0;
  --hi: #ffffff;
  --lo: #808080;
  --dk: #000000;
  --title: #000080;
  --title-2: #1084d0;
  --text: #000;
  --led-on: #ff2a1a;
  --led-off: #3a0b07;
  --board: #0e4a2c;
  --scale: 2;
  --ui: 2;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: #008080;
  font: 13px/1.35 "MS Sans Serif", "Segoe UI", Tahoma, system-ui, sans-serif;
  color: var(--text);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 16px;
  -webkit-user-select: none;
  user-select: none;
}

button { font: inherit; color: inherit; }

.window {
  background: var(--face);
  border: 2px solid;
  border-color: var(--hi) var(--dk) var(--dk) var(--hi);
  box-shadow: inset -1px -1px var(--lo), inset 1px 1px #dfdfdf;
  padding: 3px;
  max-width: 100%;
}

.titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(90deg, var(--title), var(--title-2));
  color: #fff;
  font-weight: bold;
  padding: 3px 4px;
}
.titlebar .title { flex: 1; }
.titlebar .home {
  color: #fff; text-decoration: none; font-size: 11px;
  background: var(--face); color: #000; padding: 0 5px;
  border: 1px solid; border-color: var(--hi) var(--dk) var(--dk) var(--hi);
}
.titlebar .cloud { font-weight: normal; font-size: 12px; opacity: .95; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 50vw; }

.menubar { display: flex; gap: 0; padding: 2px 0; position: relative; z-index: 5; }
.menu { position: relative; }
.menu > button {
  background: none; border: 0; padding: 2px 8px; cursor: default;
}
.menu > button:hover, .menu.open > button { background: var(--title); color: #fff; }
.dropdown {
  display: none;
  position: absolute; top: 100%; left: 0;
  min-width: 220px;
  background: var(--face);
  border: 2px solid; border-color: var(--hi) var(--dk) var(--dk) var(--hi);
  box-shadow: 2px 2px 0 rgba(0,0,0,.35);
  padding: 2px;
}
.menu.open .dropdown { display: block; }
.dropdown button {
  display: flex; justify-content: space-between; gap: 16px; width: 100%;
  background: none; border: 0; text-align: left; padding: 3px 20px; cursor: default;
}
.dropdown button[aria-checked="true"]::before { content: "✓"; position: absolute; margin-left: -14px; }
.dropdown button:hover, .dropdown button:focus-visible { background: var(--title); color: #fff; outline: none; }
.dropdown hr { border: 0; border-top: 1px solid var(--lo); border-bottom: 1px solid var(--hi); margin: 3px 2px; }
kbd { font: inherit; opacity: .8; }

.board {
  display: flex;
  gap: calc(12px * var(--ui));
  align-items: flex-start;
  padding: calc(14px * var(--ui));
  background-color: var(--board);
  /* circuit-board traces */
  background-image:
    radial-gradient(circle at 10px 10px, #2fae6a 2.5px, transparent 3px),
    radial-gradient(circle at 40px 34px, #2fae6a 2.5px, transparent 3px),
    linear-gradient(90deg, transparent 9px, #1b6b40 9px, #1b6b40 11px, transparent 11px),
    linear-gradient(0deg, transparent 33px, #1b6b40 33px, #1b6b40 35px, transparent 35px);
  background-size: 48px 48px, 48px 48px, 48px 24px, 24px 48px;
  border: 2px solid; border-color: var(--lo) var(--hi) var(--hi) var(--lo);
}

.bevel-in { border: 3px solid; border-color: var(--lo) var(--hi) var(--hi) var(--lo); }
.bevel-out { border: 3px solid; border-color: var(--hi) var(--lo) var(--lo) var(--hi); }

.viewport { position: relative; line-height: 0; background: #000; }
#view {
  width: calc(288px * var(--scale));
  height: calc(288px * var(--scale));
  image-rendering: pixelated;
  display: block;
}

.overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  line-height: 1.3;
  pointer-events: none;
}
.overlay .card {
  background: var(--face);
  border: 2px solid; border-color: var(--hi) var(--dk) var(--dk) var(--hi);
  padding: 10px 16px; text-align: center; max-width: 85%;
  box-shadow: 3px 3px 0 rgba(0,0,0,.4);
  pointer-events: auto;
}
.overlay .card h2 { margin: 0 0 4px; font-size: 16px; }
.overlay .card p { margin: 4px 0; }
.overlay.paused { background: #000; }
.overlay.paused .card { background: #000; color: #fff; border-color: #444; font-size: 20px; letter-spacing: 2px; }

.panel {
  background: var(--face);
  padding: calc(8px * var(--ui));
  width: calc(150px * var(--ui));
  display: flex; flex-direction: column; gap: calc(8px * var(--ui));
}
.stats { display: flex; flex-direction: column; gap: calc(6px * var(--ui)); }
.stat { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.stat .label {
  font-weight: bold; color: #c00000; font-size: calc(9px * var(--ui)); line-height: 1.05;
  text-shadow: 1px 1px 0 #fff;
}
.led {
  font-family: "DSEG7 Classic", "Courier New", monospace;
  font-weight: bold;
  white-space: pre;
  background: #000;
  color: var(--led-on);
  text-shadow: 0 0 4px rgba(255, 42, 26, .7);
  padding: 1px 4px;
  font-size: calc(16px * var(--ui));
  letter-spacing: 1px;
  border: 2px solid; border-color: var(--lo) var(--hi) var(--hi) var(--lo);
  min-width: 3.2ch; text-align: right;
}
.led.alert { color: #ffd23f; text-shadow: 0 0 4px rgba(255, 210, 63, .8); }

.hintbox {
  background: #000; color: #00ff66; font-family: "Courier New", monospace;
  font-size: calc(10px * var(--ui)); line-height: 1.25;
  padding: 6px; min-height: calc(110px * var(--ui));
  border: 2px solid; border-color: var(--lo) var(--hi) var(--hi) var(--lo);
}
.inventory { line-height: 0; align-self: center; }
#inv { width: calc(128px * var(--ui)); height: calc(64px * var(--ui)); image-rendering: pixelated; display: block; }

.statusbar {
  margin-top: 3px; padding: 2px 6px;
  border: 1px solid; border-color: var(--lo) var(--hi) var(--hi) var(--lo);
  min-height: 20px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.dpad {
  display: grid;
  grid-template-columns: repeat(3, 64px);
  grid-template-rows: repeat(3, 56px);
  grid-template-areas: ". u ." "l . r" ". d .";
  justify-content: center;
  gap: 4px; padding: 8px 0;
  touch-action: none;
}
.dpad[hidden] { display: none; }
.dpad button {
  background: var(--face); font-size: 22px;
  border: 2px solid; border-color: var(--hi) var(--dk) var(--dk) var(--hi);
  touch-action: none;
}
.dpad button:active, .dpad button.down { border-color: var(--dk) var(--hi) var(--hi) var(--dk); }
.dpad [data-dir="0"] { grid-area: u; }
.dpad [data-dir="1"] { grid-area: l; }
.dpad [data-dir="3"] { grid-area: r; }
.dpad [data-dir="2"] { grid-area: d; }

/* dialogs */
.win-dialog {
  padding: 0; background: var(--face); max-width: min(520px, 94vw);
  border: 2px solid; border-color: var(--hi) var(--dk) var(--dk) var(--hi);
  box-shadow: 4px 4px 0 rgba(0,0,0,.4);
}
.win-dialog::backdrop { background: rgba(0, 0, 0, .25); }
.win-dialog form { margin: 0; padding: 3px; }
.dlg-title {
  display: flex; justify-content: space-between; align-items: center;
  background: linear-gradient(90deg, var(--title), var(--title-2)); color: #fff; font-weight: bold;
  padding: 3px 4px 3px 6px;
}
.dlg-x {
  background: var(--face); border: 1px solid; border-color: var(--hi) var(--dk) var(--dk) var(--hi);
  width: 18px; height: 16px; line-height: 10px; padding: 0; color: #000;
}
.dlg-body { padding: 12px; max-height: 70vh; overflow: auto; -webkit-user-select: text; user-select: text; }
.dlg-body p { margin: 0 0 8px; }
.dlg-body h3 { margin: 10px 0 4px; font-size: 13px; }
.dlg-body ul { margin: 0 0 8px; padding-left: 18px; }
.dlg-buttons { display: flex; gap: 8px; justify-content: flex-end; padding: 0 12px 12px; flex-wrap: wrap; }
.btn {
  min-width: 80px; padding: 4px 10px; background: var(--face);
  border: 2px solid; border-color: var(--hi) var(--dk) var(--dk) var(--hi);
  box-shadow: inset -1px -1px var(--lo);
}
.btn:active { border-color: var(--dk) var(--hi) var(--hi) var(--dk); box-shadow: inset 1px 1px var(--lo); }
.btn:disabled { color: var(--lo); text-shadow: 1px 1px 0 #fff; }
.btn.primary { outline: 1px solid #000; }
.field { display: grid; grid-template-columns: 90px 1fr; gap: 6px 8px; align-items: center; margin-bottom: 6px; }
.field input {
  font: inherit; padding: 3px 4px; background: #fff;
  border: 2px solid; border-color: var(--lo) var(--hi) var(--hi) var(--lo);
}
.error { color: #b00000; min-height: 1.3em; }

table.grid { border-collapse: collapse; width: 100%; background: #fff; }
table.grid th, table.grid td { border: 1px solid var(--lo); padding: 3px 6px; text-align: left; }
table.grid th { background: var(--face); position: sticky; top: 0; }
table.grid tr.locked td { color: var(--lo); }
table.grid button.link { background: none; border: 0; padding: 0; color: #00c; text-decoration: underline; cursor: pointer; text-align: left; }

.slots { display: flex; flex-direction: column; gap: 6px; }
.slot {
  display: grid; grid-template-columns: 1fr auto; gap: 4px 10px; align-items: center;
  background: #fff; padding: 6px 8px;
  border: 2px solid; border-color: var(--lo) var(--hi) var(--hi) var(--lo);
}
.slot .meta { font-size: 12px; color: #333; }
.slot .actions { display: flex; gap: 4px; grid-row: span 2; }
.slot .actions .btn { min-width: 0; }
.legend-grid { display: grid; grid-template-columns: 32px 1fr; gap: 6px 10px; align-items: center; }
.legend-grid canvas { width: 32px; height: 32px; image-rendering: pixelated; }

@media (max-width: 700px) {
  body { padding: 0; }
  .window { border: 0; width: 100%; min-height: 100%; }
  .board { flex-direction: column; align-items: center; padding: 6px; gap: 8px; }
  .viewport { border-width: 2px; }
  .panel { width: 100%; flex-direction: row; flex-wrap: wrap; justify-content: space-between; align-items: center; }
  .stats { flex-direction: row; flex-wrap: wrap; gap: 6px 10px; }
  .hintbox { width: 100%; min-height: 0; order: 3; }
}