:root {
  color-scheme: dark;
  --bg: #0f0f10;
  --panel: #171719;
  --panel-2: #1d1d20;
  --panel-3: #242428;
  --text: #f2f2f3;
  --muted: #a7a7ac;
  --subtle: #73737a;
  --line: #303036;
  --line-strong: #4a4a52;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body,
#root {
  height: 100%;
  min-height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  color: var(--text);
  background: var(--bg);
  font-family:
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  height: 100vh;
  min-height: 100vh;
  overflow: hidden;
}

.rail {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 0;
  overflow-y: auto;
  padding: 22px;
  border-right: 1px solid var(--line);
  background: #121214;
}

.brand {
  display: grid;
  gap: 10px;
  padding-bottom: 8px;
}

.label {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  max-width: 14rem;
  font-size: 1.55rem;
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  font-size: 1.45rem;
  line-height: 1.18;
  letter-spacing: 0;
}

p {
  color: var(--muted);
  line-height: 1.55;
}

.control {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 650;
}

.mode-block {
  display: grid;
  gap: 9px;
}

.mode-block > span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 650;
}

.mode-grid {
  display: grid;
  gap: 8px;
}

.mode-card {
  display: grid;
  gap: 4px;
  width: 100%;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--muted);
  background: var(--panel);
  text-align: left;
}

.mode-card strong {
  color: var(--text);
  font-size: 0.95rem;
}

.mode-card small {
  color: var(--muted);
  line-height: 1.35;
}

.mode-card:hover,
.mode-card.active {
  border-color: var(--line-strong);
  background: var(--panel-2);
}

input,
select {
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  background: var(--panel);
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--line-strong);
}

input:disabled,
select:disabled {
  color: var(--subtle);
  background: #141416;
}

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

.quick-list span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 650;
}

.quick-list button,
.ghost,
.empty-actions button {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  background: var(--panel);
  text-align: left;
}

.quick-list button,
.ghost {
  padding: 9px 11px;
}

.quick-list button:hover,
.ghost:hover,
.empty-actions button:hover,
.search-form button:hover {
  border-color: var(--line-strong);
  background: var(--panel-2);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.ghost {
  text-align: center;
}

.chat-pane {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  height: 100vh;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.search-pane {
  grid-template-rows: auto minmax(0, 1fr);
}

.top-stack {
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 26px;
  border-bottom: 1px solid var(--line);
  background: rgba(15, 15, 16, 0.92);
}

.topbar p {
  max-width: 620px;
  margin-top: 5px;
  font-size: 0.92rem;
}

.mode-strip {
  padding: 10px 26px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  background: #101012;
  font-size: 0.9rem;
}

.conversation-strip {
  border-bottom-style: dashed;
  background: #141416;
}

.api-pill {
  flex: 0 0 auto;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--panel);
  font-size: 0.84rem;
}

.thread {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 0;
  overflow-y: auto;
  padding: 24px 26px;
}

.mode-conversation .topbar {
  background: #121214;
}

.conversation-thread {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--bg);
}

.conversation-empty {
  border-style: dashed;
}

.empty {
  display: grid;
  gap: 16px;
  max-width: 780px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.empty-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.empty-actions button {
  padding: 9px 12px;
}

.search-workspace {
  min-height: 0;
  overflow-y: auto;
  padding: 26px;
}

.search-form {
  display: grid;
  gap: 10px;
  max-width: 1040px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.search-input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.search-input-row input {
  min-height: 58px;
  border-radius: 14px;
  font-size: 1.02rem;
}

.search-form button {
  min-width: 112px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  color: var(--bg);
  background: var(--text);
  font-weight: 750;
}

.search-hints {
  color: var(--muted);
  font-size: 0.9rem;
}

.search-hints span {
  color: var(--text);
}

.search-stage,
.search-error,
.search-empty,
.search-summary,
.search-result-group {
  max-width: 1040px;
}

.search-stage {
  margin-top: 16px;
}

.search-error {
  margin-top: 16px;
  padding: 12px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  color: var(--text);
  background: var(--panel-2);
}

.search-empty {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #141416;
}

.search-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin-top: 18px;
  padding: 12px 0;
  color: var(--muted);
}

.search-summary strong {
  color: var(--text);
  font-size: 1.4rem;
}

.search-summary small {
  flex-basis: 100%;
  color: var(--subtle);
}

.search-results {
  display: grid;
  gap: 18px;
  margin-top: 6px;
  padding-bottom: 28px;
}

.search-result-group {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
}

.result-group-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.result-group-heading h3 {
  margin: 0;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.35;
}

.result-group-heading span {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.84rem;
}

.result-list {
  display: grid;
  gap: 10px;
}

.result-card {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-2);
}

.result-card a {
  width: fit-content;
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
}

.result-card a:hover {
  text-decoration: underline;
}

.result-card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
  white-space: pre-wrap;
}

.message {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.avatar {
  display: grid;
  place-items: center;
  width: 48px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--panel);
  font-size: 0.78rem;
  font-weight: 700;
}

.bubble {
  max-width: 960px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
}

.message.user .bubble {
  background: #141416;
}

.message-content {
  color: var(--text);
  line-height: 1.62;
}

.stage-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  margin-bottom: 10px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: #141416;
  font-size: 0.84rem;
  font-weight: 650;
}

.stage-line span {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--muted);
  animation: stage-pulse 1s ease-in-out infinite;
}

@keyframes stage-pulse {
  0%,
  100% {
    opacity: 0.4;
  }

  50% {
    opacity: 1;
  }
}

.message-content p,
.message-content li {
  color: var(--text);
}

.message-content h1,
.message-content h2,
.message-content h3 {
  margin: 12px 0 8px;
  font-size: 1.06rem;
  line-height: 1.3;
}

.message-content ul,
.message-content ol {
  padding-left: 20px;
}

.muted {
  color: var(--muted);
}

.block {
  display: block;
  padding: 12px;
}

.evidence {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.rewrite-card {
  display: grid;
  gap: 6px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #141416;
}

.rewrite-card span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.rewrite-card p {
  color: var(--text);
  font-size: 0.95rem;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.metric {
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-2);
}

.metric span,
.source-item span {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
}

.metric strong {
  display: block;
  margin-top: 4px;
  overflow: hidden;
  color: var(--text);
  font-size: 0.9rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

details {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #141416;
}

summary {
  padding: 11px 12px;
  color: var(--text);
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 700;
}

.source-groups {
  display: grid;
  gap: 8px;
  padding: 0 10px 10px;
}

.source-group {
  background: var(--panel);
}

.source-group summary {
  color: var(--muted);
}

.source-group summary span {
  color: var(--subtle);
  font-weight: 500;
}

.source-list {
  display: grid;
  gap: 12px;
  padding: 0 10px 10px;
}

.source-item {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-2);
}

.source-item a {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.source-item a:hover {
  text-decoration: underline;
}

.source-item p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
  white-space: pre-wrap;
}

pre {
  max-height: 360px;
  margin: 0;
  overflow: auto;
  padding: 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #0d0d0e;
  font-size: 0.82rem;
}

.composer {
  position: sticky;
  bottom: 0;
  z-index: 5;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  padding: 18px 26px 22px;
  border-top: 1px solid var(--line);
  background: rgba(15, 15, 16, 0.94);
}

.composer input {
  min-height: 50px;
  border-radius: 14px;
}

.composer button,
.gate-panel button {
  min-width: 108px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  color: var(--bg);
  background: var(--text);
  font-weight: 750;
}

.composer button:disabled {
  cursor: wait;
  opacity: 0.45;
}

.conversation-composer {
  background: #121214;
}

.gate {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(5, 5, 6, 0.82);
  backdrop-filter: blur(18px);
}

.gate-panel {
  display: grid;
  gap: 14px;
  width: min(440px, 100%);
  padding: 24px;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.gate-panel button {
  min-height: 46px;
}

.form-error {
  color: var(--text);
  padding: 10px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--panel-3);
}

@media (max-width: 900px) {
  body {
    overflow: auto;
  }

  .app-shell {
    grid-template-columns: 1fr;
    height: auto;
    overflow: visible;
  }

  .rail {
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .chat-pane {
    height: calc(100vh - 1px);
  }

  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .search-workspace {
    padding: 18px;
  }
}

@media (max-width: 620px) {
  .topbar,
  .thread,
  .composer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .message {
    grid-template-columns: 1fr;
  }

  .avatar {
    width: fit-content;
    padding: 0 12px;
  }

  .composer {
    grid-template-columns: 1fr;
  }

  .search-input-row {
    grid-template-columns: 1fr;
  }

  .search-form button {
    min-height: 46px;
  }

  .composer button {
    min-height: 46px;
  }
}