:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --fg: #171a1f;
  --muted: #667085;
  --soft: #eef2f6;
  --panel: #ffffff;
  --line: #d7dde5;
  --line-strong: #b7c1ce;
  --accent: #087d74;
  --accent-soft: #d8f3ef;
  --accent-fg: #ffffff;
  --warning: #9a5b00;
  --warning-soft: #fff4d8;
  --danger: #b42318;
  --danger-soft: #fff1f0;
  --ok: #087d4f;
  --shadow: 0 16px 40px rgba(16, 24, 40, .08);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #101214;
    --fg: #f2f4f7;
    --muted: #9da7b4;
    --soft: #1b2026;
    --panel: #161a20;
    --line: #2b333d;
    --line-strong: #44505d;
    --accent: #47d6c7;
    --accent-soft: #103d39;
    --accent-fg: #062b28;
    --warning: #ffd37a;
    --warning-soft: #35280f;
    --danger: #ffb4ab;
    --danger-soft: #3b1715;
    --ok: #6ee7b7;
    --shadow: 0 18px 46px rgba(0, 0, 0, .28);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.45 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button,
input,
textarea,
summary {
  font: inherit;
  letter-spacing: 0;
}

button {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--fg);
  padding: 8px 11px;
  font-weight: 650;
  text-align: center;
}

button:disabled {
  cursor: not-allowed;
  opacity: .46;
}

button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-fg);
}

button.ghost {
  background: transparent;
}

input,
textarea {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--fg);
  padding: 9px 10px;
}

textarea {
  min-height: 74px;
  max-height: 180px;
  resize: vertical;
}

label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(19px, 5vw, 28px);
  line-height: 1.1;
  font-weight: 760;
}

h2 {
  font-size: 13px;
  line-height: 1.2;
  font-weight: 720;
  color: var(--muted);
}

.mobile-workbench {
  width: min(1180px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 14px;
  display: grid;
  gap: 12px;
}

.topbar {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.topbar-copy {
  display: grid;
  gap: 4px;
}

.topbar-copy p {
  color: var(--muted);
  font-size: 12px;
}

.status {
  min-width: 9ch;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 9px;
  color: var(--muted);
  background: var(--panel);
  font-size: 12px;
  text-align: center;
}

.mobile-view-tabs {
  display: none;
}

.connection-drawer {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.connection-drawer summary {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  color: var(--muted);
  font-weight: 720;
  cursor: pointer;
}

.connection-grid {
  border-top: 1px solid var(--line);
  padding: 12px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(150px, .6fr);
  gap: 10px;
}

.workspace-shell {
  min-height: calc(100vh - 132px);
  display: grid;
  grid-template-columns: minmax(330px, .92fr) minmax(0, 1.18fr);
  gap: 12px;
  align-items: stretch;
}

.catalog-panel,
.conversation-panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.catalog-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
}

.target-bar {
  border-bottom: 1px solid var(--line);
  padding: 12px;
  display: grid;
  gap: 10px;
}

.target-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.selected-target {
  min-width: 0;
  color: var(--fg);
  font-size: 13px;
  font-weight: 720;
  overflow-wrap: anywhere;
}

.readiness {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 8px;
  color: var(--muted);
  background: var(--soft);
  font-size: 12px;
  font-weight: 720;
  white-space: nowrap;
}

.readiness.ready {
  border-color: color-mix(in srgb, var(--ok), var(--line) 46%);
  color: var(--ok);
  background: var(--accent-soft);
}

.readiness.blocked {
  border-color: color-mix(in srgb, var(--danger), var(--line) 46%);
  color: var(--danger);
  background: var(--danger-soft);
}

.desktop-status {
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.catalog-tools {
  border-bottom: 1px solid var(--line);
}

.catalog-tools summary {
  min-height: 40px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 720;
  cursor: pointer;
}

.catalog-tools[open] summary {
  border-bottom: 1px solid var(--line);
}

.toolbar {
  padding: 10px 12px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.rail-grid {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(150px, .82fr) minmax(0, 1.18fr);
  gap: 0;
}

.project-rail,
.thread-rail {
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
}

.project-rail {
  border-right: 1px solid var(--line);
}

.rail-heading {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
}

.projects,
.threads {
  min-height: 0;
  overflow: auto;
  display: grid;
  align-content: start;
  gap: 6px;
  padding: 8px;
}

.project,
.thread,
.empty-row {
  width: 100%;
  min-height: 54px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  padding: 9px;
  display: grid;
  gap: 4px;
  color: var(--fg);
  text-align: left;
}

.project.selected,
.thread.selected {
  border-color: color-mix(in srgb, var(--accent), var(--line) 52%);
  background: var(--accent-soft);
}

.empty-row {
  border-color: var(--line);
  color: var(--muted);
}

.item-title {
  min-width: 0;
  min-height: 1.25em;
  line-height: 1.25;
  font-size: 13px;
  font-weight: 720;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.item-meta {
  min-width: 0;
  color: var(--muted);
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.item-meta span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.runtime-pill {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 2px 6px;
  color: var(--muted);
  background: var(--soft);
  font-size: 11px;
  font-weight: 720;
}

.runtime-pill.running,
.runtime-pill.waiting {
  color: var(--warning);
  background: var(--warning-soft);
}

.runtime-pill.complete {
  color: var(--ok);
  background: var(--accent-soft);
}

.runtime-pill.error {
  color: var(--danger);
  background: var(--danger-soft);
}

.conversation-panel {
  min-height: 0;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  overflow: hidden;
}

.conversation-header {
  min-height: 54px;
  border-bottom: 1px solid var(--line);
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.conversation-title {
  min-width: 0;
  display: grid;
  gap: 3px;
}

.conversation-title strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
}

.conversation-title span {
  color: var(--muted);
  font-size: 12px;
}

.thread-runtime-summary {
  min-height: 34px;
  border-bottom: 1px solid var(--line);
  padding: 8px 12px;
  color: var(--muted);
  background: color-mix(in srgb, var(--soft), transparent 34%);
  font-size: 12px;
  font-weight: 680;
  overflow-wrap: anywhere;
}

.thread-runtime-summary.running {
  color: var(--warning);
  background: var(--warning-soft);
}

.thread-runtime-summary.complete {
  color: var(--ok);
  background: var(--accent-soft);
}

.thread-runtime-summary.failed {
  color: var(--danger);
  background: var(--danger-soft);
}

.message-feed {
  min-height: 0;
  padding: 14px;
  overflow: auto;
  display: grid;
  align-content: start;
  gap: 10px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--soft), transparent 35%), transparent 88px),
    var(--panel);
}

.message-row {
  width: min(680px, 100%);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 11px;
  display: grid;
  gap: 5px;
  background: var(--panel);
}

.message-row.local,
.message-row.user {
  justify-self: end;
  border-color: color-mix(in srgb, var(--accent), var(--line) 55%);
  background: var(--accent-soft);
}

.message-row.error {
  border-color: color-mix(in srgb, var(--danger), var(--line) 45%);
  background: var(--danger-soft);
}

.message-meta {
  color: var(--muted);
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.message-text {
  color: var(--fg);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.composer-form {
  border-top: 1px solid var(--line);
  padding: 10px;
  display: grid;
  gap: 8px;
  background: color-mix(in srgb, var(--panel), var(--soft) 45%);
}

.composer-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 8px;
  align-items: center;
}

.error {
  min-height: 18px;
  color: var(--danger);
  font-size: 12px;
}

@media (max-width: 860px) {
  .mobile-workbench {
    padding: 10px;
  }

  .topbar {
    align-items: flex-start;
  }

  .mobile-view-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    padding: 3px;
  }

  .mobile-view-tabs button {
    min-height: 34px;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--muted);
  }

  .mobile-view-tabs button[aria-selected="true"] {
    background: var(--accent-soft);
    color: var(--fg);
  }

  .connection-grid,
  .workspace-shell {
    grid-template-columns: 1fr;
  }

  .workspace-shell {
    min-height: auto;
  }

  .mobile-workbench[data-mobile-view="catalog"] .conversation-panel {
    display: none;
  }

  .mobile-workbench[data-mobile-view="conversation"] .catalog-panel {
    display: none;
  }

  .catalog-panel {
    max-height: none;
  }

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

  .project-rail {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .projects,
  .threads {
    max-height: 220px;
  }

  .conversation-panel {
    min-height: 58vh;
  }
}

@media (max-width: 520px) {
  .target-row,
  .conversation-header {
    align-items: stretch;
    flex-direction: column;
  }

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

  .composer-actions button {
    width: 100%;
  }
}