/* LAI code workspace: editor on the left, browser-style preview on the right. */
.code-lab { flex-direction: column; width: min(1320px, calc(100vw - 32px)); max-width: none; height: min(920px, calc(100dvh - 32px)); padding: 0; overflow: hidden; }
.code-lab[open] { display: flex; }
.code-lab form { display: flex; flex: 1; min-height: 0; flex-direction: column; }
.code-lab [hidden] { display: none !important; }
.code-lab svg.i { width: 15px; height: 15px; }

.lab-top { display: flex; align-items: center; gap: 12px; padding: 12px 12px 12px 16px; border-bottom: 1px solid var(--line); }
.lab-file { display: flex; align-items: center; flex: 1; min-width: 0; max-width: 420px; gap: 8px; padding: 4px 4px 4px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); }
.lab-file:focus-within { border-color: var(--accent); }
.lab-file-dot { flex: none; width: 9px; height: 9px; border-radius: 50%; background: var(--dot, #9aa0b4); box-shadow: 0 0 0 3px color-mix(in srgb, var(--dot, #9aa0b4) 22%, transparent); }
.lab-file input { flex: 1; min-width: 0; padding: 6px 0; border: 0; background: transparent; color: var(--text); font: 500 13px "IBM Plex Mono", ui-monospace, monospace; outline: none; }
.lab-file select { padding: 6px 8px; border: 0; border-radius: 7px; background: var(--panel-2); color: var(--muted); font-size: 12px; cursor: pointer; }
.lab-actions { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.lab-actions .primary-button, .lab-actions .secondary-button { display: inline-flex; align-items: center; gap: 6px; min-height: 36px; padding: 0 14px; white-space: nowrap; }
.lab-actions .icon-button { margin-left: 4px; }

.lab-pane-tabs { display: none; }
.code-lab-body { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); flex: 1; min-height: 0; }
.code-lab.lab-no-result .code-lab-body { grid-template-columns: minmax(0, 1fr); }
.code-lab.lab-no-result .code-lab-result { display: none; }

/* Editor: a transparent textarea over a highlighted <pre> with identical metrics. */
.code-lab-editor { display: flex; min-width: 0; min-height: 0; background: var(--code-bg); }
.lab-editor-wrap { display: flex; flex: 1; min-width: 0; min-height: 0; }
.lab-gutter, .lab-highlight, .code-lab-editor textarea { margin: 0; font: 13px/1.65 "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace; tab-size: 2; letter-spacing: 0; }
.lab-gutter { flex: none; min-width: 48px; padding: 16px 10px 16px 12px; overflow: hidden; color: #ffffff40; text-align: right; white-space: pre; user-select: none; border-right: 1px solid #ffffff0d; }
.lab-code-area { position: relative; flex: 1; min-width: 0; }
.lab-highlight, .code-lab-editor textarea { position: absolute; inset: 0; padding: 16px 18px; border: 0; white-space: pre; overflow: hidden; }
.lab-highlight { color: var(--code-text); pointer-events: none; background: transparent; }
.lab-highlight code { font: inherit; color: inherit; background: none; padding: 0; }
.code-lab-editor textarea { width: 100%; height: 100%; overflow: auto; resize: none; background: transparent; color: transparent; -webkit-text-fill-color: transparent; caret-color: #fff; outline: none; scrollbar-width: thin; scrollbar-color: #ffffff26 transparent; }
.code-lab-editor textarea::selection { background: #7b6cff55; }

/* Result: browser-chrome preview plus a console. */
.code-lab-result { display: flex; flex-direction: column; min-width: 0; min-height: 0; border-left: 1px solid var(--line); background: var(--panel-2); }
.lab-browser { display: flex; flex: 1; flex-direction: column; min-height: 0; }
.lab-browser-bar { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-bottom: 1px solid var(--line); background: var(--panel); }
.lab-dots { display: flex; gap: 6px; }
.lab-dots i { width: 10px; height: 10px; border-radius: 50%; background: #ff5f57; }
.lab-dots i:nth-child(2) { background: #febc2e; }
.lab-dots i:nth-child(3) { background: #28c840; }
.lab-address { flex: 1; min-width: 0; overflow: hidden; padding: 6px 12px; border-radius: 8px; background: var(--panel-2); color: var(--muted); font: 12px "IBM Plex Mono", ui-monospace, monospace; text-overflow: ellipsis; white-space: nowrap; }
.lab-address::before { content: "🔒 "; opacity: 0.6; }
.lab-sizes { display: inline-flex; gap: 2px; padding: 3px; border-radius: 9px; background: var(--panel-2); }
.lab-sizes button, .lab-reload, .lab-console-head button { padding: 4px 9px; border: 0; border-radius: 6px; background: transparent; color: var(--muted); font-size: 12px; cursor: pointer; }
.lab-sizes button.active { background: var(--panel); color: var(--text); box-shadow: var(--shadow-sm); }
.lab-reload { display: inline-flex; padding: 6px; }
.lab-sizes button:hover, .lab-reload:hover, .lab-console-head button:hover { color: var(--text); }
.code-lab-preview { display: flex; flex: 1; min-height: 160px; justify-content: center; padding: 0; overflow: auto; background: repeating-conic-gradient(var(--panel-2) 0 25%, var(--bg) 0 50%) 0 0 / 16px 16px; }
.code-lab-preview iframe { display: block; flex: 1; width: 100%; height: 100%; border: 0; background: #fff; transition: max-width 0.25s ease; }
.lab-browser[data-size="tablet"] .code-lab-preview, .lab-browser[data-size="mobile"] .code-lab-preview { padding: 16px; }
.lab-browser[data-size="tablet"] iframe { max-width: 768px; border-radius: 10px; box-shadow: var(--shadow); }
.lab-browser[data-size="mobile"] iframe { max-width: 390px; border-radius: 18px; box-shadow: var(--shadow); }

.lab-console { display: flex; flex: 1; flex-direction: column; min-height: 0; background: var(--code-bg); }
.lab-console.web-console { flex: 0 0 150px; border-top: 1px solid var(--line); }
.lab-console-head { display: flex; align-items: center; justify-content: space-between; padding: 6px 8px 6px 14px; border-bottom: 1px solid #ffffff10; color: #a9aec0; font: 600 11px/1 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: 0.06em; text-transform: uppercase; }
.lab-console-head button { color: #a9aec0; text-transform: none; letter-spacing: 0; }
.lab-console-head button:hover { color: #fff; }
.code-lab-output { flex: 1; margin: 0; padding: 12px 14px; overflow: auto; color: var(--code-text); background: transparent; white-space: pre-wrap; overflow-wrap: anywhere; font: 12.5px/1.6 "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace; }

.lab-statusbar { display: flex; align-items: center; gap: 16px; padding: 6px 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.code-lab-status { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#lab-cursor { font-family: "IBM Plex Mono", ui-monospace, monospace; }
.code-lab-runtime { display: none; }
.compact-app .code-lab-launch { display: none; }

@media (max-width: 900px) {
  .lab-actions .secondary-button span, .lab-hint { display: none; }
  .lab-actions .secondary-button { padding: 0 10px; }
}
@media (max-width: 700px) {
  .code-lab { width: 100vw; height: 100dvh; max-height: none; border-radius: 0; }
  .lab-top { flex-wrap: wrap; gap: 8px; padding: 10px; }
  .lab-file { order: 2; flex-basis: 100%; max-width: none; }
  .lab-actions { width: 100%; }
  .lab-actions .icon-button { margin-left: auto; }
  .lab-pane-tabs { display: flex; gap: 2px; margin: 0 10px 10px; padding: 3px; border-radius: 10px; background: var(--panel-2); }
  .lab-pane-tabs button { flex: 1; padding: 7px; border: 0; border-radius: 7px; background: transparent; color: var(--muted); font-weight: 600; cursor: pointer; }
  .lab-pane-tabs button.active { background: var(--panel); color: var(--text); box-shadow: var(--shadow-sm); }
  .code-lab.lab-no-result .lab-pane-tabs { display: none; }
  .code-lab-body, .code-lab.lab-no-result .code-lab-body { display: flex; }
  .code-lab-body > section { flex: 1; }
  .code-lab-body[data-pane="code"] .code-lab-result, .code-lab-body[data-pane="result"] .code-lab-editor { display: none; }
  .code-lab-result { border-left: 0; }
  .lab-dots, #lab-cursor { display: none; }
}