:root {
  --color-bg: #f5f5f5;
  --color-surface: #fff;
  --color-text: #242424;
  --color-text-muted: #616161;
  --color-border: #e1e1e1;
  --color-border-strong: #c7c7c7;
  --color-accent: #5b5fc7;
  --color-accent-text: #fff;
  --color-danger: #a4262c;
  --color-badge-human-bg: #e8ebfa;
  --color-badge-human-fg: #444791;
  --color-badge-agent-bg: #fde7e9;
  --color-badge-agent-fg: #a4262c;
  --color-notice-bg: #fff4ce;
  --color-notice-fg: #433519;
  --color-shadow: rgba(0, 0, 0, 0.15);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1f1f1f;
    --color-surface: #292929;
    --color-text: #f0f0f0;
    --color-text-muted: #b3b3b3;
    --color-border: #3d3d3d;
    --color-border-strong: #4d4d4d;
    --color-accent: #8b8cf3;
    --color-accent-text: #1f1f1f;
    --color-danger: #f1707b;
    --color-badge-human-bg: #2f335f;
    --color-badge-human-fg: #c7cbf7;
    --color-badge-agent-bg: #5a2328;
    --color-badge-agent-fg: #ffd7da;
    --color-notice-bg: #4a3f1a;
    --color-notice-fg: #f5e2a8;
    --color-shadow: rgba(0, 0, 0, 0.4);
  }
}

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

main {
  max-width: 40rem;
  margin: 4rem auto;
  padding: 0 1.5rem;
}

h1 {
  color: var(--color-accent);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 20rem;
}

.auth-form label {
  font-weight: 500;
  margin-top: 0.5rem;
}

.auth-form input,
.auth-form select {
  padding: 0.5rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 0.25rem;
  font: inherit;
  background: var(--color-surface);
  color: var(--color-text);
}

.auth-form button {
  margin-top: 0.75rem;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 0.25rem;
  background: var(--color-accent);
  color: var(--color-accent-text);
  font: inherit;
  cursor: pointer;
  align-self: flex-start;
}

.form-error {
  color: var(--color-danger);
}

.empty-state {
  color: var(--color-text-muted);
  padding: 1rem;
}

/* Shell layout */

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

.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  flex: none;
}

.topbar-title {
  font-weight: 600;
  color: var(--color-accent);
}

.topbar-user {
  margin-left: auto;
  color: var(--color-text-muted);
}

#logout-button {
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 0.25rem;
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  cursor: pointer;
}

.shell-body {
  display: flex;
  flex: 1;
  min-height: 0;
}

.rail {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 5.5rem;
  border-right: 1px solid var(--color-border);
  background: var(--color-surface);
  flex: none;
}

.rail-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding: 0.75rem 0.25rem;
  border: none;
  background: none;
  color: var(--color-text-muted);
  font: inherit;
  font-size: 0.75rem;
  cursor: pointer;
}

.rail-item.active {
  color: var(--color-accent);
  font-weight: 600;
}

.rail-icon {
  font-size: 1.4rem;
}

.workspace {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
}

.route-panel {
  padding: 1rem 1.5rem;
  height: 100%;
  box-sizing: border-box;
}

.pane-header {
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.pane-header h2 {
  margin: 0;
}

.container-new-button {
  margin-left: auto;
  padding: 0.4rem 0.8rem;
  border: none;
  border-radius: 0.25rem;
  background: var(--color-accent);
  color: var(--color-accent-text);
  font: inherit;
  cursor: pointer;
}

.container-create-form {
  margin-bottom: 1rem;
}

.container-row {
  border: 1px solid var(--color-border);
  border-radius: 0.4rem;
  margin-bottom: 0.6rem;
  padding: 0.6rem 0.8rem;
}

.container-row-summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.container-row-name {
  font-weight: 600;
  flex: 1;
}

.container-row-count {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.container-row-summary button {
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 0.25rem;
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  cursor: pointer;
}

.container-detail {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.container-roster {
  margin: 0.5rem 0;
}

.container-roster .list-item {
  cursor: default;
}

.container-member-remove {
  margin-left: auto;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 0.25rem;
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  cursor: pointer;
}

/* Chat two-pane layout */

.route-panel.two-pane {
  display: grid;
  grid-template-columns: 18rem 1fr;
  gap: 0;
  padding: 0;
  overflow: hidden;
}

.list-pane {
  border-right: 1px solid var(--color-border);
  padding: 1rem;
  overflow-y: auto;
}

.conversation-pane {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-y: auto;
}

.back-to-list {
  align-self: flex-start;
  border: none;
  background: none;
  color: var(--color-accent);
  font: inherit;
  cursor: pointer;
  padding: 0;
  margin-bottom: 1rem;
}

.list-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.5rem;
  border: none;
  border-radius: 0.4rem;
  background: none;
  color: var(--color-text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.list-item:hover,
.list-item:focus-visible {
  background: var(--color-bg);
}

.list-item-name {
  flex: 1;
  font-weight: 500;
}

.avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  object-fit: cover;
  flex: none;
}

.avatar-initials {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-accent-text);
  font-weight: 600;
}

.member-badge {
  font-size: 0.75rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  flex: none;
}

.member-badge-human {
  background: var(--color-badge-human-bg);
  color: var(--color-badge-human-fg);
}

.member-badge-agent {
  background: var(--color-badge-agent-bg);
  color: var(--color-badge-agent-fg);
}

.popover-name {
  font-weight: 600;
  margin: 0.5rem 0 0;
}

.popover-title {
  color: var(--color-text-muted);
  margin: 0;
}

#route-admin {
  overflow-y: auto;
}

#admin-members-table {
  margin-top: 1rem;
  border-collapse: collapse;
  width: 100%;
}

#admin-members-table th,
#admin-members-table td {
  text-align: left;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--color-border);
}

#admin-members-table button {
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 0.25rem;
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  cursor: pointer;
}

.token-prefix {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--color-text-muted);
  margin-right: 0.4rem;
}

.form-notice {
  margin-top: 1rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.25rem;
  background: var(--color-notice-bg);
  color: var(--color-notice-fg);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  word-break: break-all;
}

/* Phone-width layout */

@media (max-width: 640px) {
  .shell-body {
    flex-direction: column;
  }

  .rail {
    order: 2;
    width: auto;
    flex-direction: row;
    justify-content: space-around;
    border-right: none;
    border-top: 1px solid var(--color-border);
  }

  .workspace {
    order: 1;
  }

  .route-panel.two-pane {
    grid-template-columns: 1fr;
  }

  .list-pane,
  .conversation-pane {
    border-right: none;
  }

  .route-panel.two-pane .conversation-pane {
    display: none;
  }

  .route-panel.two-pane.showing-detail .list-pane {
    display: none;
  }

  .route-panel.two-pane.showing-detail .conversation-pane {
    display: flex;
  }
}