:root {
  --background: #ffffff;
  --background-subtle: #fafafa;
  --background-grid: #f3f4f6;
  --foreground: #111827;
  --muted-foreground: #6b7280;
  --code-foreground: #374151;
  --border: #e5e7eb;
  --border-active: #d1d5db;
  --accent: #f59e0b;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Inter", "Geist Sans", sans-serif;
  color: var(--foreground);
  background-color: var(--background);
  background-image: linear-gradient(to right, var(--background-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--background-grid) 1px, transparent 1px);
  background-size: 40px 40px;
}
.page { min-height: 100vh; }
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}
.pathbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  background: var(--background-subtle);
  border-bottom: 1px solid var(--border);
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
}
.pathbar-left,
.pathbar-right {
  display: flex;
  gap: 8px;
  align-items: center;
}
.path { color: var(--code-foreground); }
.divider,
.status { color: var(--muted-foreground); }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 999px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  background: #fff;
  box-shadow: var(--shadow-xs);
}
.accent { color: var(--accent); }
.hero {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.grid {
  margin-top: 24px;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.editor-window {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.titlebar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--background-subtle);
  border-bottom: 1px solid var(--border);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--muted-foreground);
}
.dots { display: flex; gap: 6px; }
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d1d5db;
}
.dot.red { background: #fca5a5; }
.dot.yellow { background: #fde68a; }
.dot.green { background: #a7f3d0; }
.filename { color: var(--code-foreground); }
.content { padding: 18px; }
.editor-window.small .content { padding: 16px; }
.title {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 700;
}
.comment {
  margin: 0 0 16px;
  color: var(--muted-foreground);
  font-family: "JetBrains Mono", monospace;
}
.command-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
}
.prompt {
  font-family: "JetBrains Mono", monospace;
}
.cmd {
  font-family: "JetBrains Mono", monospace;
  color: var(--code-foreground);
}
input[type="file"] {
  display: none;
}
.file-btn {
  border: 1px solid var(--border);
  background: var(--background-subtle);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-family: "JetBrains Mono", monospace;
  cursor: pointer;
  font-size: 12px;
}
.file-btn:hover {
  border-color: var(--border-active);
}
.file-name {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--muted-foreground);
}
.btn {
  border: 1px solid var(--border);
  background: #fff;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-family: "JetBrains Mono", monospace;
  cursor: pointer;
}
.btn:hover {
  background: var(--background-subtle);
  border-color: var(--border-active);
}
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}
.btn.run {
  border-color: var(--accent);
  color: var(--accent);
}
.file-btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}
.badge {
  display: inline-flex;
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 999px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--muted-foreground);
  margin-right: 8px;
}
.status-log {
  margin: 0 0 12px;
  padding: 12px;
  background: var(--background-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: "JetBrains Mono", monospace;
  color: var(--code-foreground);
  min-height: 120px;
  white-space: pre-wrap;
}
.actions {
  display: flex;
  gap: 10px;
  align-items: center;
}
.hidden { display: none; }
.message {
  margin-top: 8px;
  font-family: "JetBrains Mono", monospace;
  color: var(--muted-foreground);
}
.code-line {
  font-family: "JetBrains Mono", monospace;
  color: var(--code-foreground);
  margin-bottom: 6px;
}
.upload-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(250, 250, 250, 0.86);
  backdrop-filter: blur(2px);
  z-index: 50;
}
.upload-overlay.hidden { display: none; }
.upload-modal {
  width: min(520px, 92vw);
}
.overlay-status {
  font-family: "JetBrains Mono", monospace;
  color: var(--code-foreground);
  margin-bottom: 10px;
}
.overlay-body {
  font-family: "JetBrains Mono", monospace;
  color: var(--muted-foreground);
  margin-bottom: 12px;
}
.overlay-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}
.toast-host {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  min-width: 240px;
  max-width: 360px;
  padding: 12px 14px;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  font-family: "JetBrains Mono", monospace;
  color: var(--foreground);
  animation: toast-in 180ms ease-out;
}
.toast.error { border-left: 3px solid #ef4444; }
.toast-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}
.toast-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #b91c1c;
}
.toast-body {
  font-size: 12px;
  color: var(--code-foreground);
}
.toast-close {
  background: transparent;
  border: none;
  color: var(--muted-foreground);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  padding: 2px;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}