/* ArduStudio — dark editor theme */

:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #1f2630;
  --border: #2d3644;
  --text: #d7e1ec;
  --muted: #8b98a9;
  --accent: #4dc3ff;
  --accent2: #64e6b4;
  --warn: #ffcf6e;
  --danger: #ff7b72;
  --screen-on: #d8ecff;
  --screen-off: #0a0e13;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, "Segoe UI", Roboto, sans-serif;
}

body { display: flex; flex-direction: column; }

/* ------------------------------------------------------------- top bar */

#topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 6px 14px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: baseline; gap: 8px; white-space: nowrap; }
.brand .logo { color: var(--accent); font-size: 18px; }
.brand .subtitle { color: var(--muted); font-size: 12px; }
.topbar-right { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.project-name { color: var(--accent2); font-weight: 600; }
.save-status { color: var(--muted); font-size: 12px; min-width: 60px; }

#tabs { display: flex; gap: 4px; }
.tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 6px 14px;
  border-radius: 6px 6px 0 0;
  cursor: pointer;
  font: inherit;
}
.tab:hover { color: var(--text); }
.tab.active {
  color: var(--text);
  background: var(--bg);
  border-color: var(--border);
  border-bottom-color: var(--bg);
}

/* ------------------------------------------------------------- layout */

main { flex: 1; overflow: hidden; }
.tabpane { display: none; height: 100%; }
.tabpane.active { display: flex; }

.sidebar {
  width: 230px;
  min-width: 230px;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--bg2);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sidebar.right { border-right: none; border-left: 1px solid var(--border); width: 300px; min-width: 300px; }

.editor-center {
  flex: 1;
  overflow: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.editor-center.wide { align-items: stretch; max-width: 980px; margin: 0 auto; }

.panel {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 10px;
}
.panel-title {
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 4px 0 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ------------------------------------------------------------- widgets */

button.btn, button.tool, button.mini {
  background: var(--bg2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  font: inherit;
}
button.btn:hover, button.tool:hover, button.mini:hover { border-color: var(--accent); }
button.btn.primary { background: #14405c; border-color: var(--accent); }
button.btn.danger { border-color: var(--danger); color: var(--danger); }
button.mini { padding: 0 8px; line-height: 20px; font-size: 14px; }

.tool-row { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 10px; }
button.tool { font-size: 12px; padding: 4px 8px; }
button.tool.active { background: #14405c; border-color: var(--accent); color: #fff; }

input[type="text"], input[type="number"], select, textarea {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 4px 8px;
  font: inherit;
}
input[type="number"] { width: 64px; }
textarea.code { width: 100%; font: 12px/1.4 ui-monospace, Menlo, Consolas, monospace; }
label { display: inline-flex; gap: 6px; align-items: center; color: var(--muted); }

.form-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 8px 0; }
.hint { color: var(--muted); font-size: 12px; }
.warnings { color: var(--warn); font-size: 12px; white-space: pre-line; margin: 6px 0; }
.statusline { color: var(--muted); font-size: 12px; height: 18px; }

.item-list { list-style: none; margin: 0; padding: 0; }
.item-list li {
  padding: 5px 8px;
  border-radius: 5px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 6px;
  align-items: center;
}
.item-list li:hover { background: var(--bg3); }
.item-list li.active { background: #14405c; color: #fff; }
.item-list .mini { visibility: hidden; }
.item-list li:hover .mini { visibility: visible; }

/* asset grids (tiles/sprites) */
.asset-grid { display: flex; flex-wrap: wrap; gap: 6px; }
.asset-cell {
  border: 2px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  padding: 2px;
  background: var(--screen-off);
  text-align: center;
}
.asset-cell.active { border-color: var(--accent); }
.asset-cell canvas { display: block; image-rendering: pixelated; }
.asset-cell .cap {
  font-size: 10px; color: var(--muted); max-width: 48px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* palette in scene editor */
.palette { display: flex; flex-wrap: wrap; gap: 4px; }
.palette .asset-cell { padding: 1px; }

/* canvases */
canvas { image-rendering: pixelated; }
#sceneCanvas, #playCanvas {
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--screen-off);
  max-width: 100%;
}
#playCanvas:focus { outline: 2px solid var(--accent); }

/* pixel editor */
.pixel-editor { display: flex; gap: 16px; flex-wrap: wrap; align-items: flex-start; }
.pixel-grid-wrap { border: 1px solid var(--border); border-radius: 4px; }
.pixel-side { display: flex; flex-direction: column; gap: 10px; min-width: 220px; }
.frame-tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.frame-tabs button { padding: 2px 8px; }
.frame-tabs button.active { background: #14405c; border-color: var(--accent); }
.preview-box { background: var(--screen-off); border: 1px solid var(--border); border-radius: 4px; padding: 8px; width: fit-content; }

/* play tab */
.play-wrap { display: flex; flex-direction: column; align-items: center; gap: 10px; width: 100%; }
.arduboy-shell {
  background: #1a212b;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px 18px 10px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.5);
}
.shell-buttons { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; padding: 8px 4px 2px; }
.play-controls { display: flex; gap: 10px; align-items: center; }
.var-watch { border-collapse: collapse; font-size: 12px; width: 100%; }
.var-watch td { border-bottom: 1px solid var(--border); padding: 3px 8px; }
.var-watch td:last-child { text-align: right; color: var(--accent2); font-family: ui-monospace, monospace; }

/* script editor */
.script-list { display: flex; flex-direction: column; gap: 6px; margin: 6px 0; }
.script-list .script-list { margin-left: 14px; border-left: 2px solid var(--border); padding-left: 8px; }
.event-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 13px;
}
.event-card.ev-TEXT { border-left-color: var(--accent2); }
.event-card.ev-IF_VAR { border-left-color: var(--warn); }
.event-card.ev-SWITCH_SCENE, .event-card.ev-PLAYER_POS { border-left-color: #c792ea; }
.event-card.ev-TONE, .event-card.ev-WAIT { border-left-color: #f78c6c; }
.event-head { display: flex; align-items: center; gap: 6px; }
.event-head .ev-label { font-weight: 600; flex: 1; }
.event-head .mini { padding: 0 5px; }
.event-fields { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.event-fields label { font-size: 12px; }
.event-fields input[type="text"], .event-fields textarea { width: 100%; }
.event-branch-label { font-size: 11px; color: var(--muted); text-transform: uppercase; margin-top: 6px; }
.add-event-row { margin-top: 6px; }
select.add-event { max-width: 100%; }

.checker {
  background:
    repeating-conic-gradient(#20262e 0% 25%, #161b22 0% 50%) 0 0/16px 16px;
  border: 1px solid var(--border);
  border-radius: 4px;
  max-width: 100%;
}

/* help */
.help h2 { color: var(--accent); font-size: 17px; margin-top: 20px; }
.help h3 { color: var(--accent2); font-size: 14px; }
.help code, .help kbd {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: ui-monospace, monospace;
  font-size: 12px;
}
.help a { color: var(--accent); }
.help table { border-collapse: collapse; }
.help td, .help th { border: 1px solid var(--border); padding: 4px 10px; text-align: left; }

@media (max-width: 900px) {
  .sidebar, .sidebar.right { width: 180px; min-width: 180px; }
}