/* Верхум: бордовые и тёплые нейтрали под verhum.org */
:root {
  --va-burgundy: #6f1f2a;
  --va-burgundy-deep: #4a151c;
  --va-gold: #b8955c;
  --va-gold-light: #d4bc8e;
  --va-cream: #f9f6f2;
  --va-muted: #6b6763;
  --va-frame: #e8e3dc;
  --va-assistant-bg: #fcfaf7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    Georgia,
    "Times New Roman",
    Times,
    serif;
  color: var(--va-burgundy-deep);
  background: var(--va-cream);
  font-size: 16px;
  line-height: 1.5;
}

.va-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.va-top {
  background: linear-gradient(
    165deg,
    var(--va-burgundy-deep) 0%,
    var(--va-burgundy) 62%,
    #8a3540 100%
  );
  color: var(--va-cream);
  padding: 1rem 1.1rem;
  border-bottom: 4px solid var(--va-gold);
}

.va-brand {
  display: inline-block;
  font-size: 0.74rem;
  letter-spacing: 0.19em;
  text-transform: uppercase;
  opacity: 0.95;
}

.va-top h1 {
  margin: 0.44rem 0 0;
  font-size: clamp(1.07rem, 2.45vw, 1.43rem);
  font-weight: 600;
}

.va-top p.intro {
  margin: 0.55rem 0 0;
  font-size: 0.875rem;
  max-width: 56rem;
}

.va-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  background: white;
  border-bottom: 1px solid var(--va-frame);
}

.va-muted-line {
  font-size: 0.78rem;
  color: var(--va-muted);
  flex-grow: 1;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.94rem;
  border-radius: 3px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(180deg, var(--va-burgundy) 0%, var(--va-burgundy-deep));
  color: var(--va-cream);
  border-bottom: solid 3px rgba(212, 188, 142, 0.35);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-muted {
  background: #eae6e0;
  color: var(--va-burgundy-deep);
}

.modes-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0.72rem 1rem 0.25rem;
  background: #fff;
}

.mode-chip {
  font-size: 0.818rem;
  padding: 0.35rem 0.74rem;
  border-radius: 3px;
  border: solid 2px transparent;
  background: linear-gradient(#fffdfc, var(--va-cream));
  color: var(--va-burgundy-deep);
  cursor: pointer;
  font-family:
    Segoe UI,
    system-ui,
    sans-serif;
}

.mode-chip[disabled] {
  opacity: 0.45;
  cursor: default;
}

.mode-chip:not([disabled]):hover {
  border-color: rgba(139, 31, 45, 0.22);
}

.mode-chip.active:not([disabled]) {
  border-color: var(--va-gold);
  box-shadow: inset 0 0 0 1px rgba(184, 149, 92, 0.45);
}

.hint-box {
  margin: 0 1rem 0.72rem;
  padding: 0.65rem 0.74rem;
  background: var(--va-frame);
  color: var(--va-muted);
  font-size: 0.848rem;
}

.log {
  flex: 1;
  overflow-y: auto;
  padding: 0.6rem 0.94rem;
  gap: 0.55rem;
  display: flex;
  flex-direction: column;
}

.bubble-row {
  display: flex;
  width: 100%;
}

.row-site {
  justify-content: stretch;
}

.row-user {
  justify-content: flex-end;
}

.row-model {
  justify-content: flex-start;
}

/* Ответ модели: сворачиваемый блок размышления + основной текст */
.b-model-stack {
  max-width: 92%;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.va-reasoning {
  border: 1px solid var(--va-frame);
  border-radius: 4px;
  padding: 0.35rem 0.55rem;
  background: rgba(249, 246, 242, 0.85);
}

.va-reasoning summary {
  font-family:
    Segoe UI,
    system-ui,
    sans-serif;
  font-size: 0.78rem;
  color: var(--va-muted);
  cursor: pointer;
  user-select: none;
}

.va-reasoning .reasoning-inner.markdown-body {
  padding: 0.35rem 0 0;
  margin: 0;
  font-family:
    Segoe UI,
    system-ui,
    sans-serif;
  font-size: 0.82rem;
  line-height: 1.52;
  color: var(--va-muted);
  overflow-wrap: break-word;
}

.va-reasoning .reasoning-inner.markdown-body > *:first-child {
  margin-top: 0;
}

.va-reasoning .reasoning-inner.markdown-body > *:last-child {
  margin-bottom: 0;
}

/* Сворачиваемый лог «что делает модель»: поиск, инструменты, шаги API */
.va-activity {
  border: 1px solid rgba(184, 149, 92, 0.45);
  border-radius: 4px;
  padding: 0.35rem 0.55rem;
  background: rgba(249, 246, 242, 0.95);
}

.va-activity summary {
  font-family:
    Segoe UI,
    system-ui,
    sans-serif;
  font-size: 0.78rem;
  color: var(--va-burgundy-deep);
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}

.va-activity-inner {
  margin-top: 0.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.va-activity-status {
  font-family:
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    monospace;
  font-size: 0.75rem;
  color: var(--va-burgundy);
  padding: 0.35rem 0.5rem;
  background: rgba(111, 31, 42, 0.06);
  border-radius: 3px;
  border-left: solid 3px var(--va-gold);
}

.va-activity-status-line + .va-activity-status-line {
  margin-top: 0.25rem;
}

.va-activity-log {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  max-height: 14rem;
  overflow-y: auto;
  font-family:
    Segoe UI,
    system-ui,
    sans-serif;
  font-size: 0.78rem;
}

.va-activity-line strong {
  display: block;
  color: var(--va-burgundy-deep);
  margin-bottom: 0.2rem;
  font-weight: 600;
}

.va-activity-line-detail {
  margin: 0;
  padding: 0.35rem 0.45rem;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
  font-size: 0.72rem;
  line-height: 1.45;
  color: var(--va-muted);
  background: rgba(255, 255, 255, 0.7);
  border: solid 1px var(--va-frame);
  border-radius: 3px;
}

.va-activity-bucket {
  border: solid 1px var(--va-frame);
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.75);
  overflow: hidden;
}

.va-activity-bucket-label {
  padding: 0.28rem 0.45rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--va-muted);
  background: rgba(111, 31, 42, 0.05);
  border-bottom: solid 1px var(--va-frame);
}

.va-activity-append {
  margin: 0;
  padding: 0.4rem 0.45rem;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
  font-size: 0.72rem;
  line-height: 1.45;
  color: var(--va-burgundy-deep);
  max-height: 10rem;
  overflow-y: auto;
  background: #f7f5f1;
}

.bubble {
  max-width: 92%;
}

.b-model-stack .bubble.b-model {
  max-width: 100%;
}

.b-site {
  align-self: stretch;
  padding: 0.55rem 0.74rem;
  background: linear-gradient(#f6f7f9, #e9ecef);
  color: var(--va-muted);
  font-family:
    Segoe UI,
    system-ui,
    sans-serif;
  font-size: 0.836rem;
  border-radius: 4px;
  border-left: solid 4px rgba(111, 31, 42, 0.16);
}

.b-user {
  padding: 0.55rem 0.74rem;
  background: rgba(139, 31, 45, 0.08);
  color: var(--va-burgundy-deep);
  border-radius: 4px;
  border: solid 1px rgba(139, 31, 45, 0.2);
}

.b-model.markdown-body {
  padding: 0.55rem 0.74rem;
  background: var(--va-assistant-bg);
  border: solid 1px var(--va-frame);
  border-radius: 4px;
  font-family:
    Segoe UI,
    system-ui,
    sans-serif;
  font-size: 0.9rem;
  line-height: 1.55;
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.md-fallback {
  white-space: pre-wrap;
}

.b-model.markdown-body > *:first-child {
  margin-top: 0;
}

.b-model.markdown-body > *:last-child {
  margin-bottom: 0;
}

.b-model.markdown-body p {
  margin: 0.45em 0;
}

.b-model.markdown-body h1,
.b-model.markdown-body h2,
.b-model.markdown-body h3,
.b-model.markdown-body h4 {
  font-family:
    Segoe UI,
    system-ui,
    sans-serif;
  color: var(--va-burgundy-deep);
  margin: 0.75em 0 0.4em;
  line-height: 1.28;
}

.b-model.markdown-body h1 {
  font-size: 1.15rem;
}
.b-model.markdown-body h2 {
  font-size: 1.05rem;
}
.b-model.markdown-body h3,
.b-model.markdown-body h4 {
  font-size: 0.96rem;
}

.b-model.markdown-body ul,
.b-model.markdown-body ol {
  padding-left: 1.35rem;
  margin: 0.45em 0;
}

.b-model.markdown-body blockquote {
  margin: 0.5em 0;
  padding: 0.35rem 0.55rem 0.35rem 0.7rem;
  border-left: solid 4px rgba(139, 31, 45, 0.22);
  color: var(--va-muted);
  background: rgba(111, 31, 42, 0.04);
}

.b-model.markdown-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
  font-size: 0.86em;
  padding: 0.06em 0.28em;
  border-radius: 3px;
  background: rgba(111, 31, 42, 0.07);
  border: solid 1px rgba(232, 227, 220, 0.9);
}

.b-model.markdown-body pre {
  margin: 0.55em 0;
  padding: 0.55rem 0.65rem;
  border-radius: 4px;
  border: solid 1px var(--va-frame);
  background: #f4f2ee;
  overflow-x: auto;
  font-size: 0.824rem;
  line-height: 1.45;
}

.b-model.markdown-body pre code {
  padding: 0;
  border: none;
  background: none;
  font-size: inherit;
}

.b-model.markdown-body a {
  color: var(--va-burgundy);
  font-weight: 600;
}

.b-model.markdown-body table {
  border-collapse: collapse;
  margin: 0.55em 0;
  width: 100%;
  font-size: 0.86rem;
}

.b-model.markdown-body th,
.b-model.markdown-body td {
  border: solid 1px var(--va-frame);
  padding: 0.3rem 0.45rem;
}

.b-model.markdown-body th {
  background: rgba(111, 31, 42, 0.06);
}

.b-model.markdown-body hr {
  border: none;
  border-top: solid 1px var(--va-frame);
  margin: 0.75em 0;
}

.composer-section {
  border-top: 1px solid var(--va-frame);
  background: white;
  padding: 0.65rem;
}

textarea {
   width: 100%;
   resize: vertical;
   min-height: 4rem;
   font-family:
     Segoe UI,
     system-ui,
     sans-serif;
   padding: 0.55rem 0.6rem;
   border: solid 1px var(--va-frame);
   border-radius: 3px;
   font-size: 0.9rem;
 }

textarea[disabled] {
  background: var(--va-cream);
}

.status-foot {
  font-size: 0.72rem;
  color: var(--va-muted);
  margin-top: 0.4rem;
  font-family:
    Segoe UI,
    system-ui,
    sans-serif;
}

.dlg-overlay {
  position: fixed;
  inset: 0;
  background: rgba(74, 21, 28, 0.36);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.dlg {
  background: white;
  max-width: 28rem;
  padding: 1rem 1.1rem;
  border-radius: 4px;
  border-top: solid 5px var(--va-gold);
  box-shadow: 0 5px 32px rgba(0, 0, 0, 0.15);
}

.dlg-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 0.8rem;
}

.hidden {
  display: none !important;
}