:root {
  color-scheme: dark;
  --bg: #0b1016;
  --surface: #101722;
  --line: #24324a;
  --text: #e6ecf5;
  --muted: #90a1b8;
  --accent: #33d6c0;
  --warn: #f2b441;
}
* { box-sizing: border-box; }
body {
  margin: 0; height: 100vh;
  background:
    radial-gradient(900px 400px at 85% -10%, rgba(51,214,192,.08), transparent 60%),
    var(--bg);
  color: var(--text);
  font: 14px/1.45 -apple-system, "Segoe UI", Roboto, sans-serif;
}
.app-shell { height: 100%; display: flex; flex-direction: column; padding: 12px; gap: 12px; }

.compatibility-banner { border: 1px solid #7a4a2a; background: #1d1510; border-radius: 8px; padding: 10px 14px; }
.compatibility-banner h2 { margin: 0 0 4px; font-size: 14px; }
.compatibility-banner p { margin: 0; color: var(--muted); }

.tool-card { flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 10px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--surface); padding: 10px; }
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.toolbar h1 { margin: 0; font-size: 15px; letter-spacing: 0.02em; }
.toolbar h1 small { color: var(--muted); font-weight: 400; font-size: 12px; margin-left: 6px; }
.toolbar-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.status-pill { font: 12px/1 Menlo, monospace; color: var(--muted); border: 1px solid var(--line);
  border-radius: 999px; padding: 5px 10px; }
.status-pill.on { color: var(--accent); border-color: var(--accent); }

.workspace { flex: 1; min-height: 0; display: grid; grid-template-columns: 1fr; grid-template-rows: 1fr 8px 1fr; gap: 6px; }
@media (min-width: 920px) { .workspace { grid-template-columns: 1.25fr 8px 1fr; grid-template-rows: 1fr; } }
.splitter { background: var(--line); border-radius: 4px; align-self: stretch; justify-self: stretch; transition: background .12s; }
.splitter:hover, .splitter.dragging { background: var(--accent); }
@media (min-width: 920px) { .splitter { cursor: col-resize; } }
@media (max-width: 919px) { .splitter { cursor: row-resize; } }
body.resizing { user-select: none; cursor: inherit; }

.editor-panel, .output-panel { min-height: 0; min-width: 0; display: flex; flex-direction: column;
  border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }

.panel-header { display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 6px 8px; border-bottom: 1px solid var(--line); background: #0d1420; }
.panel-header h2 { margin: 0; font-size: 12px; text-transform: uppercase; color: var(--muted); letter-spacing: 0.08em; }
.panel-actions { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }

select, button { font: inherit; color: var(--text); background: #16202e; border: 1px solid var(--line);
  border-radius: 6px; padding: 4px 10px; cursor: pointer; }
select { padding: 4px 6px; max-width: 210px; }
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: 0.45; cursor: default; }
button.primary, button.run-button { border-color: var(--accent); color: var(--accent); }
button.danger { border-color: #e5484d; color: #ff8a8d; }

.raw-toggle { display: flex; align-items: center; gap: 5px; color: var(--muted); font-size: 12px; }

.editor-surface { flex: 1; min-height: 0; }
.editor-surface.is-fallback { display: none; }
.fallback-editor { display: none; flex: 1; resize: none; border: 0; padding: 10px; background: #0f1621;
  color: var(--text); font: 13px/1.5 Menlo, "Courier New", monospace; }
.editor-surface.is-fallback ~ .fallback-editor { display: block; }

.terminal-surface { flex: 1; min-height: 0; padding: 6px; background: #0d1420; }
.terminal-surface .xterm { height: 100%; }

.generated-files { border-bottom: 1px solid var(--line); padding: 6px 8px; background: #0d1420; }
.generated-files-title { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 4px; }
.generated-file { display: flex; align-items: center; gap: 8px; padding: 2px 0; font-family: Menlo, monospace; font-size: 12px; }
.generated-file-meta { color: var(--muted); margin-left: auto; }

/* authorization gate */
.gate { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center;
  background: rgba(8,12,18,.92); backdrop-filter: blur(3px); padding: 20px; }
.gate-card { max-width: 560px; border: 1px solid var(--warn); border-radius: 12px; background: var(--surface); padding: 24px 26px; }
.gate-card h2 { margin: 0 0 10px; color: var(--warn); font-size: 18px; }
.gate-card p { color: #cdd6e4; font-size: 14px; }
.gate-card code { font-family: Menlo, monospace; color: var(--accent); }
.gate-actions { display: flex; gap: 10px; margin-top: 18px; }
.hint { color: var(--muted); font-size: 12px; margin: 0 4px; }