:root {
  color-scheme: light;
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-border: #d9dce1;
  --color-text: #1f2430;
  --color-text-muted: #5b6270;
  --color-primary: #1f4fd8;
  --color-primary-contrast: #ffffff;
  --color-user-bubble: #e8edff;
  --color-assistant-bubble: #ffffff;
  --color-error-bg: #fdecec;
  --color-error-border: #e6a3a3;
  --color-error-text: #8a1f1f;
  --color-status-ok: #1e8e3e;
  --color-status-warn: #b8860b;
  --color-status-error: #c5221f;
  --color-status-unknown: #8a8f98;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.45;
}

.page {
  max-width: 820px;
  margin: 0 auto;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  padding: 16px;
  gap: 12px;
}

.app-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.app-header-titles h1 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
}

.subtitle {
  margin: 2px 0 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.app-header-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  white-space: nowrap;
}

.badge-static {
  background: #eef0f4;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.badge-status {
  border: 1px solid var(--color-border);
  background: #eef0f4;
  color: var(--color-text);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-status-unknown);
  display: inline-block;
}

.badge-status-ready .status-dot {
  background: var(--color-status-ok);
}

.badge-status-ready {
  color: var(--color-status-ok);
}

.badge-status-notready .status-dot {
  background: var(--color-status-warn);
}

.badge-status-notready {
  color: var(--color-status-warn);
}

.badge-status-error .status-dot {
  background: var(--color-status-error);
}

.badge-status-error {
  color: var(--color-status-error);
}

.badge-status-unknown .status-dot {
  background: var(--color-status-unknown);
}

.controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.debug-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  user-select: none;
  cursor: pointer;
}

.btn {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 8px 14px;
  font-size: 0.9rem;
  cursor: pointer;
  background: var(--color-surface);
  color: var(--color-text);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-secondary:hover:not(:disabled) {
  background: #eef0f4;
}

.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-contrast);
  font-weight: 600;
}

.btn-primary:hover:not(:disabled) {
  background: #1a41b0;
}

.settings-row {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  padding: 4px 12px;
}

.settings-row summary {
  cursor: pointer;
  padding: 8px 0;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.settings-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 4px 0 12px;
}

.settings-body label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.settings-body input {
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.9rem;
  font-family: inherit;
}

.settings-hint {
  margin: 2px 0 0;
  font-size: 0.76rem;
  color: var(--color-text-muted);
}

.conversation {
  flex: 1;
  min-height: 260px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.message {
  max-width: 82%;
  padding: 10px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.message-user {
  align-self: flex-end;
  background: var(--color-user-bubble);
  border-color: #c7d3fb;
}

.message-assistant {
  align-self: flex-start;
  background: var(--color-assistant-bubble);
}

.message-role {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.message-loading {
  align-self: flex-start;
  color: var(--color-text-muted);
  font-style: italic;
  animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.4;
  }
  50% {
    opacity: 1;
  }
}

.message-error {
  align-self: stretch;
  background: var(--color-error-bg);
  border-color: var(--color-error-border);
  color: var(--color-error-text);
}

/* Sanitized HTML answer content (response_format="html") -- see
   static/app.js renderHtmlAnswer()/answer_rendering.py for the security
   invariant. The model/converter never sets style/class attributes, so
   every visual decision here is this stylesheet's alone. */
.message-html-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.message-html-content > *:first-child {
  margin-top: 0;
}

.message-html-content > *:last-child {
  margin-bottom: 0;
}

.message-html-content p {
  margin: 0;
}

.message-html-content h1,
.message-html-content h2,
.message-html-content h3,
.message-html-content h4 {
  margin: 4px 0 2px;
  font-weight: 600;
  line-height: 1.25;
}

/* Scaled down from document-level headings -- this is a chat bubble, not a
   page. */
.message-html-content h1 {
  font-size: 1.15rem;
}

.message-html-content h2 {
  font-size: 1.08rem;
}

.message-html-content h3 {
  font-size: 1.02rem;
}

.message-html-content h4 {
  font-size: 0.95rem;
}

.message-html-content ul,
.message-html-content ol {
  margin: 0;
  padding-left: 1.4em;
}

.message-html-content li {
  margin: 2px 0;
}

.message-html-content blockquote {
  margin: 0;
  padding: 2px 12px;
  border-left: 3px solid var(--color-border);
  color: var(--color-text-muted);
}

.message-html-content code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85em;
  background: #f4f5f7;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 1px 4px;
}

.message-html-content pre {
  margin: 0;
  padding: 8px;
  background: #f4f5f7;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.message-html-content pre code {
  background: none;
  border: none;
  padding: 0;
}

/* Wide tables scroll horizontally within their own wrapper instead of
   breaking the page layout -- same pattern .debug-details pre already uses
   for wide debug JSON (overflow-x: auto on the scrolling element). Markdown
   conversion emits a bare <table>, so the table itself is the scroll
   container here. */
.message-html-content table {
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
  width: max-content;
  max-width: 100%;
  font-size: 0.92em;
}

.message-html-content th,
.message-html-content td {
  border: 1px solid var(--color-border);
  padding: 6px 10px;
  text-align: left;
}

.message-html-content th {
  background: #eef0f4;
  font-weight: 600;
}

.message-html-content tbody tr:nth-child(even) {
  background: #f7f8fa;
}

.debug-details {
  margin-top: 8px;
  font-size: 0.78rem;
}

.debug-details summary {
  cursor: pointer;
  color: var(--color-text-muted);
}

.debug-details pre {
  margin: 6px 0 0;
  padding: 8px;
  background: #f4f5f7;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.semantic-trace-details {
  margin-top: 6px;
}

.semantic-trace-list {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.semantic-trace-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 4px 8px;
  background: #f4f5f7;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.76rem;
  flex-wrap: wrap;
}

.semantic-trace-index {
  color: var(--color-text-muted);
  min-width: 1.4em;
}

.semantic-trace-stage {
  font-weight: 600;
  white-space: nowrap;
}

.semantic-trace-detail {
  color: var(--color-text-muted);
  word-break: break-word;
}

.error-banner {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error-text);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 0.88rem;
}

.composer {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.composer-input {
  flex: 1;
  resize: vertical;
  min-height: 44px;
  max-height: 200px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
}

.composer .btn-primary {
  min-height: 44px;
  padding: 0 20px;
}

@media (max-width: 520px) {
  .page {
    padding: 10px;
  }

  .message {
    max-width: 92%;
  }

  .app-header {
    flex-direction: column;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --color-bg: #16181d;
    --color-surface: #1f232b;
    --color-border: #333844;
    --color-text: #e7e9ee;
    --color-text-muted: #9aa0ac;
    --color-primary: #6f92ff;
    --color-primary-contrast: #0d1220;
    --color-user-bubble: #26315c;
    --color-assistant-bubble: #1f232b;
    --color-error-bg: #3a1f1f;
    --color-error-border: #6a3232;
    --color-error-text: #f2a8a8;
  }

  .badge-static,
  .badge-status {
    background: #232833;
  }

  .debug-details pre {
    background: #14161b;
  }

  .semantic-trace-row {
    background: #14161b;
  }

  .message-html-content code {
    background: #14161b;
  }

  .message-html-content pre {
    background: #14161b;
  }

  .message-html-content pre code {
    background: none;
  }

  .message-html-content th {
    background: #232833;
  }

  .message-html-content tbody tr:nth-child(even) {
    background: #1a1d24;
  }
}