:root {
  --bg: #f5f6f8;
  --bg-panel: #ffffff;
  --fg: #1a1d23;
  --fg-muted: #5b6270;
  --border: #d8dbe1;
  --accent: #2b6cb0;
  --accent-fg: #ffffff;
  --error-bg: #fdecec;
  --error-border: #e3a3a3;
  --error-fg: #7a1f1f;
  --code-bg: #eef0f3;
  --table-stripe: #f0f2f5;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --bg-panel: #161920;
    --fg: #e4e6eb;
    --fg-muted: #9aa2b1;
    --border: #2a2f3a;
    --accent: #5b9bd5;
    --accent-fg: #0f1115;
    --error-bg: #2a1414;
    --error-border: #6b2b2b;
    --error-fg: #ff9b9b;
    --code-bg: #1c2029;
    --table-stripe: #1a1e26;
  }
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
}

.site-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-panel);
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--fg);
  font-family: var(--font-mono);
}

.tagline {
  margin: 0.35rem 0 0;
  color: var(--fg-muted);
  font-size: 0.85rem;
  max-width: 60ch;
}

.site-main {
  flex: 1;
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.site-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--fg-muted);
  font-size: 0.8rem;
  text-align: center;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
}

.panel h1 {
  margin-top: 0;
  font-size: 1.4rem;
}

.panel h2 {
  margin-top: 0;
  font-size: 1.05rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.panel-error {
  background: var(--error-bg);
  border-color: var(--error-border);
  color: var(--error-fg);
}

.panel-ai {
  border-left: 3px solid var(--accent);
}

.model-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  margin-left: 0.5rem;
}

.ai-headline {
  font-weight: 600;
  font-size: 1rem;
}

.upload-form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.upload-form label {
  font-weight: 600;
}

.upload-form input[type="file"] {
  color: var(--fg);
}

button, .upload-form button {
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1.1rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.08);
}

code {
  font-family: var(--font-mono);
  background: var(--code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.9em;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.report-meta, .file-meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.25rem 1rem;
  margin: 0;
}

.report-meta dt, .file-meta dt {
  color: var(--fg-muted);
  font-size: 0.85rem;
}

.report-meta dd, .file-meta dd {
  margin: 0;
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.75rem;
  font-size: 0.9rem;
}

.data-table th, .data-table td {
  text-align: left;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border);
  overflow-wrap: anywhere;
}

.data-table thead th {
  color: var(--fg-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.data-table tbody tr:nth-child(even) {
  background: var(--table-stripe);
}

.log-cell {
  max-width: 40rem;
}

.empty {
  color: var(--fg-muted);
  font-style: italic;
}

.file-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-top: 1rem;
}

.file-card h3 {
  margin-top: 0;
  font-size: 1rem;
  word-break: break-all;
}

.file-card h4 {
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

.file-notes {
  margin: 0.75rem 0;
  padding-left: 1.25rem;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.log-preview {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 24rem;
  overflow-y: auto;
}