:root {
  --bg: #101015;
  --panel: #151823;
  --panel-2: #1b2030;
  --ink: #e7e8f2;
  --muted: #8f93a7;
  --accent: #f5c46b;
  --accent-2: #63d3b7;
  --border: #262b3b;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  color: var(--ink);
  background: radial-gradient(circle at 10% 10%, #1b1f2f, #0d0f16 55%);
}

.app {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 8px minmax(320px, 1.2fr);
  height: 100%;
  width: 100%;
  overflow: hidden;
}

.mobile-toggle {
  display: none;
  grid-column: 1 / -1;
  padding: 10px 12px;
  gap: 8px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: center;
}

.toggle-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
}

.toggle-btn.active {
  color: #1f1f1f;
  background: var(--accent);
  border-color: var(--accent);
}

.panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.panel-right {
  border-left: 1px solid var(--border);
}

.resizer {
  cursor: col-resize;
  background: var(--panel);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
}

.resizer:hover {
  background: #202636;
}

.panel-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.title {
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--accent);
  text-transform: uppercase;
}

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

.code-editor {
  flex: 1;
  border: none;
  background: var(--panel-2);
  color: var(--ink);
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.code-editor .cm-editor {
  height: 100%;
  background: transparent;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.6;
  font-family: inherit;
}

.code-editor .cm-scroller {
  overflow: auto;
  padding: 18px 20px;
}

.code-editor .cm-content {
  caret-color: #ffffff;
}

.code-editor .cm-cursor,
.code-editor .cm-dropCursor {
  border-left-color: #ffffff !important;
}

.code-editor .cm-focused {
  outline: none;
}

.code-editor .cm-gutters {
  background: transparent;
  border: none;
  color: var(--muted);
}

.code-editor .cm-activeLine {
  background: transparent !important;
}

.code-editor .cm-activeLineGutter {
  background: transparent !important;
}

.status {
  padding: 12px 20px;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: var(--panel);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.toolbar-group {
  display: flex;
  gap: 12px;
  align-items: center;
}

.toolbar-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

.toolbar-group input {
  width: 80px;
  background: #111422;
  border: 1px solid var(--border);
  color: var(--ink);
  padding: 4px 6px;
  border-radius: 4px;
  font-family: inherit;
  font-size: 12px;
}

.toolbar-group button {
  background: var(--accent);
  color: #191600;
  border: none;
  border-radius: 4px;
  padding: 6px 12px;
  font-family: inherit;
  cursor: pointer;
  font-size: 12px;
}

.toolbar-group button[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.toolbar-hint {
  font-size: 12px;
  color: var(--muted);
}

.viewport {
  position: relative;
  flex: 1;
  background: #0b0e17;
  overflow: hidden;
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 13px;
  pointer-events: none;
  text-align: center;
  padding: 20px;
}

.overlay-card {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  background: rgba(16, 18, 26, 0.9);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  pointer-events: auto;
}

.overlay-text {
  color: var(--ink);
  font-size: 12px;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--accent-2);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.cancel-button {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 6px 12px;
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }
  .panel {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .mobile-toggle {
    display: flex;
  }
  .resizer {
    display: none;
  }
  .panel-right {
    border-left: none;
  }
  .app.show-preview #panelCode {
    display: none;
  }
  .app.show-code #panelPreview {
    display: none;
  }
}