:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --border: #e0e3e8;
  --text: #1f2430;
  --text-muted: #626878;
  --accent: #1b6b52;
  --accent-light: #e6f2ee;
  --danger: #b3261e;
  --warn: #8a6d1f;
  --warn-bg: #fbf3dc;
  --radius: 8px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header.app-header {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 20px 32px;
}

header.app-header h1 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
}

header.app-header .subtitle {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}

section.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 20px;
}

section.panel h2 {
  margin: 0 0 4px;
  font-size: 1.05rem;
}

section.panel .panel-desc {
  margin: 0 0 16px;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.workflow-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.workflow-strip span.step {
  background: var(--accent-light);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 600;
}

.input-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.file-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
}

.file-field label {
  color: var(--text-muted);
}

button {
  font-family: inherit;
  font-size: 0.88rem;
  padding: 9px 16px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

button.primary:disabled {
  background: #9fb9b0;
  border-color: #9fb9b0;
  cursor: not-allowed;
}

button:hover:not(:disabled) { filter: brightness(0.97); }

.status-line {
  margin-top: 14px;
  font-size: 0.85rem;
}

.status-ok { color: var(--accent); }
.status-error {
  color: var(--danger);
  background: #fbeceb;
  border: 1px solid #f1c9c6;
  padding: 10px 12px;
  border-radius: 6px;
  white-space: pre-wrap;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.stat-box {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px;
  text-align: left;
}

.stat-box .value {
  font-size: 1.4rem;
  font-weight: 700;
}

.stat-box .label {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

tbody tr {
  cursor: pointer;
}

tbody tr:hover {
  background: var(--accent-light);
}

tbody tr.selected {
  background: var(--accent-light);
  outline: 1px solid var(--accent);
}

.table-wrap {
  overflow-x: auto;
}

.score-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.8rem;
}

#chartCanvas {
  max-height: 420px;
}

.detail-empty {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px 20px;
  font-size: 0.88rem;
  margin-bottom: 14px;
}

.detail-grid .k {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.detail-grid .v {
  font-weight: 600;
}

.interpretation-box {
  background: var(--accent-light);
  border: 1px solid #cfe6dd;
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 0.88rem;
  margin-bottom: 10px;
}

.caution-box {
  background: var(--warn-bg);
  border: 1px solid #edd9a3;
  color: var(--warn);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 0.85rem;
  margin-bottom: 10px;
}

.annotation-box {
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 0.85rem;
}

.annotation-box .tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 4px;
  display: block;
}

.annotation-fields {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 8px 16px;
  font-size: 0.82rem;
}

.annotation-fields .k {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 1px;
}

.ai-box {
  margin-top: 10px;
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 0.85rem;
}

.ai-ask-btn {
  display: block;
  margin-top: 6px;
}

.gemini-result {
  margin-top: 10px;
  font-size: 0.88rem;
  white-space: pre-wrap;
}

.gemini-result:empty {
  display: none;
}

.gemini-loading {
  color: var(--text-muted);
  font-style: italic;
}

.gemini-error {
  color: var(--danger);
  background: #fbeceb;
  border: 1px solid #f1c9c6;
  padding: 10px 12px;
  border-radius: 6px;
}

.disclaimer {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.disclaimer strong {
  color: var(--text);
}

details.guide summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
}

details.guide {
  font-size: 0.85rem;
  color: var(--text-muted);
}

details.guide ol, details.guide ul {
  padding-left: 20px;
}

details.guide code {
  font-family: var(--mono);
  background: var(--accent-light);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--accent);
}

.example-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 0.8rem;
  margin: 8px 0;
}

footer.app-footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.78rem;
  padding: 20px;
}

@media (max-width: 640px) {
  header.app-header { padding: 16px 18px; }
  main { padding: 16px 12px 48px; }
  section.panel { padding: 16px; }
}