:root {
  --bg-main: #0e1117;
  --bg-surface: #161b22;
  --bg-surface-elevated: #21262d;
  --border-color: #30363d;
  --text-primary: #f0f6fc;
  --text-muted: #8b949e;
  --accent: #238636;
  --accent-hover: #2ea043;
  --accent-blue: #1f6feb;
  --badge-green: #238636;
  --badge-amber: #d29922;
  --badge-gray: #484f58;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.5;
  height: 100vh;
  overflow: hidden;
}

#app { display: flex; flex-direction: column; height: 100vh; }

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 24px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
}

.brand h1 { font-size: 1.1rem; font-weight: 700; }
.brand h1 span { color: var(--accent-blue); }
.header-actions { display: flex; gap: 10px; }

.workspace {
  display: grid;
  grid-template-columns: 480px 1fr;
  flex: 1;
  overflow: hidden;
}

.pane { height: 100%; overflow-y: auto; }
.left-pane {
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  padding: 20px;
}

.right-pane {
  background-color: var(--bg-main);
  padding: 30px 40px;
  display: flex;
  flex-direction: column;
}

.panel-section {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 16px;
  margin-bottom: 16px;
}

.section-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.section-hint { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 12px; }
.subhead { font-size: 0.85rem; color: var(--text-primary); border-bottom: 1px solid var(--border-color); padding-bottom: 4px; margin-bottom: 8px; }

/* Model Select & Badges */
.model-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.badge {
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-ready { background-color: rgba(35, 134, 54, 0.2); color: #3fb950; border: 1px solid var(--badge-green); }
.badge-download { background-color: rgba(210, 153, 34, 0.2); color: #e3b341; border: 1px solid var(--badge-amber); }
.badge-checking { background-color: var(--bg-main); color: var(--text-muted); border: 1px solid var(--border-color); }
.badge-cloud { background-color: rgba(31, 111, 235, 0.2); color: #58a6ff; border: 1px solid var(--accent-blue); }

.select-dropdown {
  width: 100%;
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 8px 10px;
  color: var(--text-primary);
  font-size: 0.85rem;
  margin-bottom: 10px;
}

/* Download Telemetry UI */
.telemetry-box {
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 10px;
  margin-top: 10px;
}

.telemetry-box.hidden { display: none; }

.telemetry-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  margin-bottom: 6px;
  font-family: var(--font-mono);
}

.progress-bar-bg {
  width: 100%;
  height: 8px;
  background: var(--bg-surface-elevated);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background-color: var(--accent-blue);
  transition: width 0.15s ease;
}

.telemetry-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 6px;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.btn-link {
  background: none;
  border: none;
  color: #f85149;
  cursor: pointer;
  text-decoration: underline;
  font-size: 0.7rem;
}

/* Form Controls */
.form-group { margin-bottom: 12px; position: relative; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

label { display: block; font-size: 0.8rem; margin-bottom: 4px; }
input[type="text"], input[type="password"], textarea {
  width: 100%;
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 8px 10px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
}

.chip-group { display: flex; flex-direction: column; gap: 6px; }
.chip {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 0.8rem;
  cursor: pointer;
  text-align: left;
}
.chip.active {
  background-color: rgba(31, 111, 235, 0.15);
  border-color: var(--accent-blue);
  color: var(--text-primary);
  font-weight: 600;
}

/* Autocomplete Dropdown */
.autocomplete-container { position: relative; }
.autocomplete-list {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: 0 0 4px 4px;
  list-style: none;
  max-height: 160px;
  overflow-y: auto;
  z-index: 1000;
  display: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
}
.autocomplete-list.open { display: block; }
.autocomplete-item {
  padding: 8px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.autocomplete-item:hover { background-color: var(--accent-blue); color: #fff; }

/* Buttons */
.btn {
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 4px;
  cursor: pointer;
}
.btn-primary { background-color: var(--accent); color: #fff; border-color: rgba(255,255,255,0.1); }
.btn-primary:hover { background-color: var(--accent-hover); }
.btn-secondary { background-color: var(--bg-surface-elevated); color: var(--text-primary); }
.btn-block { width: 100%; margin-top: 8px; }
.btn-icon { background: none; border: none; font-size: 1.5rem; color: var(--text-muted); cursor: pointer; }

/* Preview Pane */
.preview-header {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
  margin-bottom: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.spec-markdown-body { font-size: 0.9rem; color: #c9d1d9; overflow-y: auto; }
.spec-markdown-body h1 { font-size: 1.3rem; color: #fff; margin: 16px 0 8px 0; }
.spec-markdown-body h2 { font-size: 1.1rem; color: #fff; margin: 20px 0 8px 0; border-bottom: 1px solid var(--border-color); padding-bottom: 4px; }
.spec-markdown-body h3 { font-size: 0.95rem; color: #fff; margin: 14px 0 6px 0; }
.spec-markdown-body p { margin-bottom: 12px; }
.spec-markdown-body ul { margin-left: 20px; margin-bottom: 12px; }
.spec-markdown-body table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 0.8rem; }
.spec-markdown-body th, .spec-markdown-body td { border: 1px solid var(--border-color); padding: 8px 10px; text-align: left; }
.spec-markdown-body th { background-color: var(--bg-surface); }

/* Modals & Drawers */
.drawer {
  position: fixed;
  top: 0;
  right: -360px;
  width: 360px;
  height: 100%;
  background: var(--bg-surface);
  box-shadow: -4px 0 16px rgba(0,0,0,0.6);
  border-left: 1px solid var(--border-color);
  transition: right 0.25s ease-in-out;
  padding: 20px;
  z-index: 2000;
}
.drawer.open { right: 0; }
.drawer-header { display: flex; justify-content: space-between; align-items: center; }
.history-list { list-style: none; margin-top: 12px; overflow-y: auto; }
.history-item { padding: 10px; border: 1px solid var(--border-color); border-radius: 4px; margin-bottom: 8px; cursor: pointer; }
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; z-index: 3000; }
.modal-backdrop.hidden { display: none; }
.modal { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: 8px; width: 440px; padding: 20px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.modal-footer { margin-top: 16px; display: flex; justify-content: flex-end; }