:root {
  color-scheme: light;
  --bg: #f7f8f4;
  --surface: #ffffff;
  --surface-alt: #eef3f4;
  --ink: #17211f;
  --muted: #63706d;
  --line: #cdd8d5;
  --accent: #266a62;
  --accent-ink: #ffffff;
  --warn: #8a4d0f;
  --danger: #a3333d;
  --good: #2f6b3f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.4;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  min-height: 40px;
  padding: 8px 12px;
  cursor: pointer;
}

button[type="button"] {
  background: var(--surface);
  color: var(--accent);
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 9px 10px;
}

textarea {
  resize: vertical;
}

label,
legend {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

fieldset {
  border: 1px solid var(--line);
  margin: 0;
  padding: 10px;
}

fieldset label,
.privacy-grid label,
.toggle {
  display: flex;
  align-items: center;
  gap: 8px;
}

fieldset input,
.privacy-grid input,
.toggle input {
  width: auto;
}

.app-shell {
  display: grid;
  gap: 18px;
  padding: 18px;
}

.workspace,
.assistive-grid > section {
  background: var(--surface);
  border: 1px solid var(--line);
}

.topbar,
.section-header,
.answer-header,
.drawer-header,
.source-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.topbar {
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 2px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 750;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  margin-bottom: 0;
}

h1 {
  font-size: 26px;
}

h2 {
  font-size: 18px;
}

h3 {
  font-size: 15px;
}

.status-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.status-strip span,
.status-strip a,
.badge,
.mini-source {
  border: 1px solid var(--line);
  background: var(--surface-alt);
  color: var(--ink);
  padding: 5px 8px;
  font-size: 12px;
}

.status-strip a {
  text-decoration: none;
  font-weight: 700;
}

.config-panel {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-alt);
}

.chat-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(320px, 1.35fr) minmax(260px, 0.8fr);
  min-height: 560px;
}

.ask-panel,
.answer-panel,
.source-drawer {
  padding: 18px;
}

.ask-panel,
.answer-panel {
  border-right: 1px solid var(--line);
}

.ask-panel,
#report-form,
#summary-form {
  display: grid;
  gap: 14px;
}

.control-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.upload-placeholder,
.audit-row,
.report-panel,
.summary-output {
  border: 1px solid var(--line);
  background: var(--surface-alt);
  padding: 12px;
}

.answer-panel {
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  gap: 14px;
}

.answer-output {
  white-space: pre-wrap;
  overflow: auto;
  border: 1px solid var(--line);
  padding: 14px;
  background: #fbfcf9;
}

.warning-list {
  display: grid;
  gap: 8px;
}

.warning {
  margin: 0;
  border-left: 4px solid var(--warn);
  background: #fff8e8;
  padding: 8px 10px;
}

.warning.error {
  border-left-color: var(--danger);
}

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

code {
  overflow-wrap: anywhere;
}

.source-drawer {
  overflow: auto;
}

.source-list {
  display: grid;
  gap: 12px;
}

.source-card,
.live-panel {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 12px;
}

.source-card dl {
  display: grid;
  gap: 5px;
  margin: 0;
}

.source-card dl div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.source-card dt {
  color: var(--muted);
}

.assistive-grid {
  display: grid;
  grid-template-columns: minmax(420px, 1.4fr) minmax(320px, 0.8fr);
  gap: 18px;
}

.assistive-grid > section {
  padding: 18px;
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0;
}

.live-panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-height: 520px;
  overflow: auto;
}

.live-panel {
  min-height: 190px;
  display: grid;
  gap: 10px;
  align-content: start;
}

.live-panel.pinned {
  border-color: var(--good);
  box-shadow: inset 4px 0 0 var(--good);
}

.mini-source-list,
.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tab-fallback {
  margin-top: 14px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.fine-print {
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 1080px) {
  .config-panel,
  .chat-layout,
  .assistive-grid,
  .privacy-grid {
    grid-template-columns: 1fr;
  }

  .ask-panel,
  .answer-panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 720px) {
  .app-shell {
    padding: 10px;
  }

  .topbar,
  .section-header,
  .answer-header,
  .audit-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .control-row,
  .live-panel-grid {
    grid-template-columns: 1fr;
  }
}