:root {
  --bg: #0f172a;
  --surface: #16213a;
  --surface-2: #1c2942;
  --border: #2a3a5c;
  --text: #e8edf7;
  --muted: #93a3c2;
  --accent: #3b82f6;
  --accent-dark: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: 3rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem 1rem 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.15rem;
}
.brand-icon { width: 28px; height: 28px; }

.tabs {
  display: flex;
  gap: 0.25rem;
  overflow-x: auto;
}
.tab-btn {
  background: none;
  border: none;
  color: var(--muted);
  padding: 0.6rem 0.9rem;
  font-size: 0.95rem;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.tab-btn.active {
  color: var(--text);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

#app {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem;
}

.view { display: none; }
.view.active { display: block; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

h1 { font-size: 1.3rem; margin: 0 0 1rem; }
.muted { color: var(--muted); font-size: 0.9rem; margin: 0.15rem 0 0; }

.field-group { margin-bottom: 1rem; display: flex; flex-direction: column; gap: 0.4rem; }
.field-group label { font-size: 0.9rem; color: var(--muted); }
.field-help { margin: -0.25rem 0 0.15rem; font-size: 0.8rem; color: var(--muted); opacity: 0.85; line-height: 1.35; }

input[type="text"], input[type="number"], input[type="search"], textarea, select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  color: var(--text);
  font-size: 1rem;
  width: 100%;
  font-family: inherit;
}
textarea { resize: vertical; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; }
@media (max-width: 480px) {
  .grid-3 { grid-template-columns: 1fr; }
}

.segmented { display: flex; gap: 0.5rem; }
.segmented-opt {
  flex: 1;
  text-align: center;
  padding: 0.7rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.95rem;
  background: var(--surface-2);
}
.segmented-opt input { margin-right: 0.4rem; }

.checkbox-row, .radio-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0;
}
.radio-options { display: flex; flex-direction: column; gap: 0.3rem; }

.checkbox-inline {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  cursor: pointer;
}
.checkbox-inline input { flex-shrink: 0; }

.file-input-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.file-preview { max-width: 100%; border-radius: 10px; margin-top: 0.4rem; }

.btn-primary, .btn-secondary, .btn-ghost {
  border: none;
  border-radius: 10px;
  padding: 0.85rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
}
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); margin-top: 0.5rem; }
.btn-ghost { background: none; color: var(--accent); border: 1px solid var(--accent); }

.hint { color: var(--danger); font-size: 0.85rem; min-height: 1.2em; margin: 0.6rem 0 0; }

.session-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; }
.badge {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--surface-2);
  border: 1px solid var(--border);
  white-space: nowrap;
}
.badge.in_progress { color: var(--warning); border-color: var(--warning); }
.badge.completed { color: var(--accent); border-color: var(--accent); }
.badge.validated { color: var(--success); border-color: var(--success); }

.session-log { display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 1rem; }
.log-entry {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  font-size: 0.9rem;
}
.log-entry.assistant { border-left: 3px solid var(--accent); }
.log-entry.user { border-left: 3px solid var(--muted); }
.log-entry ul { margin: 0.3rem 0 0; padding-left: 1.1rem; }

.conclusion { border: 1px solid var(--success); }
.conclusion h2 { margin-top: 0; color: var(--success); }
.conclusion.conclusion-cancelled { border-color: var(--danger); }
.conclusion .confidence { font-weight: 600; }
.anonymized-summary {
  font-style: italic;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
  margin: 0 0 0.8rem;
}
.keyword-chip {
  display: inline-block;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  margin: 0.2rem 0.3rem 0.2rem 0;
  font-size: 0.8rem;
}

.list { display: flex; flex-direction: column; gap: 0.6rem; }
.list-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  cursor: pointer;
}
.list-item:hover { border-color: var(--accent); }
.list-item h3 { margin: 0 0 0.25rem; font-size: 1rem; }
.list-item p { margin: 0.15rem 0; font-size: 0.85rem; color: var(--muted); }

.search-input { margin-bottom: 1rem; }

.empty-state { color: var(--muted); text-align: center; padding: 2rem 1rem; }

.count-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.count-header .muted { margin: 0; }

.limit-banner {
  border: 1px solid var(--warning);
  background: rgba(245, 158, 11, 0.08);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
}
.limit-banner p { margin: 0 0 0.6rem; }

.btn-danger-ghost {
  background: none;
  border: 1px solid var(--danger);
  color: var(--danger);
  border-radius: 10px;
  padding: 0.5rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.btn-danger-ghost:hover { background: rgba(239, 68, 68, 0.1); }
.btn-danger-ghost.confirm-pending { background: var(--danger); color: white; }

.session-actions { display: flex; align-items: center; gap: 0.6rem; }

.hidden { display: none !important; }

.toast {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 0.7rem 1.1rem;
  border-radius: 10px;
  font-size: 0.9rem;
  z-index: 50;
}
.toast.error { border-color: var(--danger); color: var(--danger); }

.spinner {
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-right: 0.4em;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- PDF export (print) ---------- */
#printView { display: none; }

.print-doc { color: #111; }
.print-doc h1 { font-size: 1.4rem; margin: 0 0 0.2rem; }
.print-doc .print-meta { color: #555; font-size: 0.85rem; margin-bottom: 1rem; }
.print-doc .print-section { margin-bottom: 1.2rem; }
.print-doc .print-section h2 { font-size: 1.05rem; border-bottom: 1px solid #ccc; padding-bottom: 0.2rem; margin-bottom: 0.5rem; }
.print-doc dl.print-vehicle { display: grid; grid-template-columns: auto 1fr; gap: 0.2rem 1rem; margin: 0; font-size: 0.9rem; }
.print-doc dl.print-vehicle dt { color: #555; }
.print-doc dl.print-vehicle dd { margin: 0; }
.print-doc .print-step { margin-bottom: 0.9rem; page-break-inside: avoid; }
.print-doc .print-step .print-question { font-weight: 600; }
.print-doc .print-step .print-help { color: #555; font-size: 0.82rem; margin: 0.1rem 0 0.3rem; }
.print-doc .print-step .print-answer { margin: 0 0 0.15rem 1rem; }
.print-doc .print-conclusion { border: 1px solid #999; border-radius: 6px; padding: 0.8rem 1rem; }
.print-doc .print-conclusion h2 { border: none; }
.print-doc .print-keywords span { display: inline-block; border: 1px solid #999; border-radius: 999px; padding: 0.1rem 0.6rem; margin: 0.15rem 0.25rem 0 0; font-size: 0.78rem; }

@media print {
  body * { visibility: hidden; }
  #printView, #printView * { visibility: visible; }
  #printView {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 0;
  }
}