:root {
  --bg: #0f1419;
  --panel: #171f27;
  --panel-2: #1f2a35;
  --border: #2a3948;
  --text: #e8f1f8;
  --muted: #95a8b8;
  --accent: #2dd4bf;
  --accent-text: #042a27;
  --danger: #ff6b6b;
  --warn: #ffcb6b;
  --screen-bg: #05080b;
  --radius: 10px;
  --mono: "JetBrains Mono", "Fira Code", Consolas, monospace;
  --sans: "Fira Sans", "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
}

button {
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  cursor: pointer;
}

button:hover {
  border-color: var(--muted);
}

button:disabled {
  opacity: 0.45;
  cursor: default;
}

button.primary {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

button:focus-visible,
canvas:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.app {
  display: grid;
  grid-template-columns: 220px minmax(320px, 1fr) minmax(320px, 1fr);
  grid-template-rows: auto minmax(0, 1fr);
  grid-template-areas:
    "top top top"
    "side editor run";
  height: 100vh;
  gap: 10px;
  padding: 10px;
}

.topbar {
  grid-area: top;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 14px;
}

.brand h1 {
  margin: 0;
  font-size: 17px;
}

.brand span {
  color: var(--muted);
  font-size: 12px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.actions-gap {
  width: 10px;
}

/* Links styled like the buttons next to them. */
.link-btn {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  text-decoration: none;
  white-space: nowrap;
}

.link-btn:hover {
  border-color: var(--muted);
}

/* The block editor for beginners (blocks/). */
.link-btn.blocks {
  border-color: var(--accent);
}

.link-btn.coffee {
  background: #ffdd00;
  border-color: #ffdd00;
  color: #1a1a1a;
}

.link-btn.coffee:hover {
  background: #ffe433;
}

.sidebar {
  grid-area: side;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
}

.program-list {
  overflow-y: auto;
  min-height: 0;
}

.program-list h3 {
  margin: 12px 4px 4px;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.program-list button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  width: 100%;
  text-align: left;
  font-weight: 500;
  background: transparent;
  border-color: transparent;
  padding: 6px 8px;
}

.program-list button:hover {
  background: var(--panel-2);
}

.program-list button[aria-current="true"] {
  background: var(--panel-2);
  border-color: var(--accent);
}

.program-list .edited {
  color: var(--warn);
  font-size: 11px;
}

.editor-pane {
  grid-area: editor;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.program-info {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.program-info h2 {
  margin: 0 0 4px;
  font-size: 15px;
}

.program-info p {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.program-info p:empty {
  display: none;
}

.program-info .controls::before {
  content: "Controls: ";
  color: var(--text);
}

.editor {
  flex: 1;
  min-height: 0;
}

.editor .cm-editor {
  height: 100%;
  font-size: 13px;
}

.editor .cm-scroller {
  font-family: var(--mono);
}

.run-pane {
  grid-area: run;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  min-height: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
}

.screen {
  flex: 3 1 0;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--screen-bg);
  border-radius: 8px;
  overflow: hidden;
}

.screen canvas {
  display: block;
  image-rendering: pixelated;
}

/* Full screen: the game alone on black. .screen-max is the same for
   browsers without the Fullscreen API (iPhone Safari): the panel covers
   the window instead. */
.screen:fullscreen,
.screen.screen-max {
  border-radius: 0;
  background: #000;
}

/* The focus ring is useful in the page, noise around a full-screen game. */
.screen:fullscreen canvas,
.screen.screen-max canvas {
  outline: none;
}

.screen.screen-max {
  position: fixed;
  inset: 0;
  z-index: 50;
}

.statusbar button.small {
  padding: 2px 8px;
  font-size: 11px;
}

.statusbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}

#status.running {
  color: var(--accent);
}

#status.error {
  color: var(--danger);
}

.tabs {
  display: flex;
  gap: 4px;
}

.tab {
  padding: 4px 10px;
  font-size: 12px;
  background: transparent;
}

.tab.active {
  background: var(--panel-2);
  border-color: var(--border);
}

.console,
.inspector,
.files {
  flex: 2 1 0;
  min-height: 80px;
  overflow: auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  font-family: var(--mono);
  font-size: 12px;
}

.console div {
  white-space: pre-wrap;
  word-break: break-word;
  padding: 1px 0;
}

.console .error {
  color: var(--danger);
}

.console .warn {
  color: var(--warn);
}

.console .ok {
  color: var(--accent);
}

.console a {
  color: inherit;
  text-decoration: underline;
  cursor: pointer;
}

.inspector h3 {
  margin: 4px 0;
  font-size: 11px;
  text-transform: uppercase;
  color: var(--muted);
}

.inspector table {
  width: 100%;
  border-collapse: collapse;
}

.inspector th,
.inspector td {
  text-align: left;
  padding: 1px 6px;
  border-bottom: 1px solid var(--panel-2);
  white-space: nowrap;
}

.inspector th {
  color: var(--muted);
  font-weight: 500;
}

.toast {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--panel-2);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
}

@media (max-width: 1100px) {
  .app {
    grid-template-columns: 200px minmax(0, 1fr);
    grid-template-rows: auto minmax(360px, 1fr) minmax(420px, auto);
    grid-template-areas:
      "top top"
      "side editor"
      "run run";
    height: auto;
    min-height: 100vh;
  }
}

/* Phones: the game first, across the whole width, then the buttons, the
   program list and the editor. */
@media (max-width: 700px), (max-height: 500px) and (orientation: landscape) and (pointer: coarse) {
  .app {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto auto minmax(360px, 60vh);
    grid-template-areas:
      "run"
      "top"
      "side"
      "editor";
    height: auto;
    padding: 0 8px 8px;
  }

  .run-pane {
    margin: 0 -8px;
    padding: 0 8px 8px;
    border-width: 0 0 1px;
    border-radius: 0;
  }

  .screen {
    flex: none;
    margin: 0 -8px;
    border-radius: 0;
  }

  .console,
  .inspector,
  .files {
    flex: none;
    height: 160px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .program-list {
    max-height: 180px;
  }
}

/* Upright: the game at the top, and below it a band for the thumbs (the
   touch controls sit in the panel's bottom corners). */
@media (max-width: 700px) {
  .screen {
    height: min(calc(75vw + 230px), 100svh);
    align-items: flex-start;
  }
}

/* Sideways: the game fills the screen, the controls either side of it. */
@media (max-height: 500px) and (orientation: landscape) and (pointer: coarse) {
  .screen {
    height: 100svh;
  }
}

/* ── Files tab ─────────────────────────────────────────────────────── */

.tab .count {
  margin-left: 4px;
  padding: 0 5px;
  border-radius: 8px;
  background: var(--border);
  color: var(--text);
}

.files {
  font-family: var(--sans);
}

.drop-zone {
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--muted);
}

.drop-zone p {
  margin: 0 0 4px;
}

.drop-zone.over {
  border-color: var(--accent);
  background: var(--panel-2);
}

.drop-zone code {
  font-family: var(--mono);
  color: var(--text);
}

.drop-zone .hint {
  font-size: 11px;
}

.file-pick {
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
}

.file-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.file-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
}

.file-list .name {
  font-family: var(--mono);
  word-break: break-all;
}

.file-list .info {
  flex: 1;
  color: var(--muted);
  font-size: 11px;
}

.file-list button {
  padding: 2px 8px;
  font-size: 11px;
}