:root {
  /* findhelp.org brand palette */
  --fh-teal: #008080;
  --fh-teal-dark: #006666;
  --fh-teal-darker: #007575;
  --fh-teal-muted: #006963;
  --fh-burgundy: #351417;
  --fh-orange: #be3b19;
  --fh-cream: #f9f8f5;
  --fh-border: #e0e0e0;
  --fh-border-warm: #ece9de;
  --fh-text: #333333;
  --fh-text-muted: #4d4d4d;
  --fh-white: #ffffff;

  --bg: var(--fh-cream);
  --bg-elevated: var(--fh-white);
  --bg-hover: rgba(0, 128, 128, 0.04);
  --border: var(--fh-border);
  --text: var(--fh-burgundy);
  --text-body: var(--fh-text);
  --text-muted: var(--fh-text-muted);
  --accent: var(--fh-teal);
  --accent-dark: var(--fh-teal-dark);
  --accent-dim: rgba(0, 128, 128, 0.08);
  --user-bubble: rgba(0, 128, 128, 0.1);
  --assistant-bubble: var(--fh-white);
  --danger: var(--fh-orange);
  --radius: 8px;
  --font: "Source Sans Pro", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text-body);
  font-family: var(--font);
}

body {
  background-image:
    radial-gradient(ellipse 70% 45% at 10% 0%, rgba(0, 128, 128, 0.06), transparent),
    radial-gradient(ellipse 50% 35% at 100% 100%, rgba(53, 20, 23, 0.04), transparent);
}

.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100vh;
  max-height: 100dvh;
  overflow: hidden;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem;
  border-right: 1px solid var(--fh-border-warm);
  background: var(--bg-elevated);
  box-shadow: 0 0 32px rgba(0, 0, 0, 0.06);
  height: 100%;
  overflow: hidden;
  flex-shrink: 0;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: flex-start;
  flex-shrink: 0;
}

.brand-logo {
  display: block;
  width: auto;
  max-width: 160px;
  height: 34px;
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  padding-left: 2px;
}

.agent-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.agent-btn {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-body);
  text-align: left;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.agent-btn:hover {
  background: var(--bg-hover);
}

.agent-btn.active {
  background: var(--accent-dim);
  border-color: rgba(0, 128, 128, 0.35);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.agent-btn.active strong {
  color: var(--fh-burgundy);
}

.agent-icon {
  font-size: 1.1rem;
  color: var(--accent);
  line-height: 1.4;
}

.agent-btn strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
  color: var(--fh-burgundy);
}

.agent-btn small {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.sidebar-footer {
  border-top: 1px solid var(--fh-border-warm);
  padding-top: 1rem;
  flex-shrink: 0;
}

.sidebar-footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.ghost-btn {
  width: 100%;
  padding: 0.55rem;
  border: 1px solid rgba(0, 105, 99, 0.35);
  border-radius: var(--radius);
  background: var(--fh-white);
  color: var(--fh-teal-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.15s, color 0.15s;
}

.ghost-btn:hover {
  background: rgba(0, 105, 99, 0.04);
  color: var(--fh-teal-dark);
}

.chat-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--fh-white);
  flex-shrink: 0;
}

.chat-header h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--fh-burgundy);
}

.badge {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--fh-teal-dark);
  border: 1px solid rgba(0, 128, 128, 0.2);
}

.messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.message {
  max-width: min(720px, 92%);
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius);
  line-height: 1.55;
  font-size: 0.95rem;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-body);
}

.message.user {
  align-self: flex-end;
  background: var(--user-bubble);
  border: 1px solid rgba(0, 128, 128, 0.25);
}

.message.assistant {
  align-self: flex-start;
  width: 60%;
  max-width: 60%;
  background: var(--assistant-bubble);
  border: 1px solid var(--border);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.message-token-usage {
  margin-top: 0.65rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--fh-border-warm);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--mono);
  line-height: 1.4;
  white-space: normal;
}

.message.assistant.markdown.has-visualization,
.message.assistant.markdown:has(.mermaid-wrap) {
  width: 100%;
  max-width: 100%;
  align-self: stretch;
}

.message.assistant.markdown {
  white-space: normal;
}

.message.assistant.markdown :first-child {
  margin-top: 0;
}

.message.assistant.markdown :last-child {
  margin-bottom: 0;
}

.message.assistant.markdown h1,
.message.assistant.markdown h2,
.message.assistant.markdown h3,
.message.assistant.markdown h4 {
  color: var(--fh-burgundy);
  font-weight: 700;
  line-height: 1.3;
  margin: 1.1em 0 0.5em;
}

.message.assistant.markdown h1 { font-size: 1.35rem; }
.message.assistant.markdown h2 { font-size: 1.15rem; }
.message.assistant.markdown h3 { font-size: 1.02rem; }
.message.assistant.markdown h4 { font-size: 0.95rem; }

.message.assistant.markdown p,
.message.assistant.markdown ul,
.message.assistant.markdown ol,
.message.assistant.markdown blockquote,
.message.assistant.markdown pre,
.message.assistant.markdown table {
  margin: 0.65em 0;
}

.message.assistant.markdown ul,
.message.assistant.markdown ol {
  padding-left: 1.35rem;
}

.message.assistant.markdown li + li {
  margin-top: 0.25em;
}

.message.assistant.markdown blockquote {
  padding: 0.5rem 0.85rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-dim);
  color: var(--text-muted);
}

.message.assistant.markdown a {
  color: var(--fh-teal-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.message.assistant.markdown hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1em 0;
}

.message.assistant.markdown pre:not(.mermaid) {
  padding: 0.75rem 0.9rem;
  border-radius: calc(var(--radius) - 2px);
  background: #f3f2ed;
  border: 1px solid var(--fh-border-warm);
  overflow-x: auto;
  white-space: pre;
}

.message.assistant.markdown code {
  font-family: var(--mono);
  font-size: 0.85em;
}

.message.assistant.markdown :not(pre) > code {
  padding: 0.12em 0.35em;
  border-radius: 4px;
  background: rgba(0, 128, 128, 0.08);
}

.message.assistant.markdown table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.message.assistant.markdown th,
.message.assistant.markdown td {
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.message.assistant.markdown th {
  background: var(--accent-dim);
  color: var(--fh-burgundy);
  font-weight: 600;
}

.message.assistant.markdown tr:nth-child(even) td {
  background: rgba(0, 0, 0, 0.02);
}

.message.assistant.markdown .mermaid-wrap {
  width: 100%;
  margin: 1rem 0;
}

.message.assistant.markdown .mermaid,
.message.assistant.markdown pre.mermaid {
  width: 100%;
  box-sizing: border-box;
  background: var(--fh-white);
  border: 1px solid var(--fh-border-warm);
  border-radius: var(--radius);
  padding: 0.75rem 0.5rem 1rem;
  overflow-x: auto;
  text-align: center;
  font-family: var(--font);
  font-size: 0.95rem;
  white-space: normal;
}

.message.assistant.markdown .mermaid svg {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.message.assistant.markdown .mermaid svg path.line,
.message.assistant.markdown .mermaid svg g.line path,
.message.assistant.markdown .mermaid svg g[class*="line"] path,
.message.assistant.markdown .mermaid svg .plot path {
  stroke: #008080 !important;
  stroke-width: 2.5px !important;
  fill: none !important;
}

.message.assistant.markdown .mermaid svg rect.bar {
  fill: #008080 !important;
}

.message.assistant.markdown pre.mermaid.mermaid-error {
  font-family: var(--mono);
  font-size: 0.82rem;
  text-align: left;
  white-space: pre-wrap;
  color: var(--text-muted);
}

.message-export-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--fh-border-warm);
}

.export-btn {
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 128, 128, 0.35);
  background: var(--fh-white);
  color: var(--fh-teal-dark);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.export-btn:hover {
  background: var(--accent-dim);
  border-color: var(--fh-teal);
}

.export-btn:focus-visible {
  outline: 2px solid rgba(0, 128, 128, 0.45);
  outline-offset: 2px;
}

.message.pdf-export {
  font-size: 0.9rem;
  line-height: 1.45;
  color: #333333;
  background: #ffffff;
}

.message.pdf-export .mermaid-wrap {
  width: 100%;
  max-width: 100%;
  margin: 0.75rem 0;
  page-break-inside: avoid;
  break-inside: avoid;
}

.message.pdf-export .pdf-chart-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  page-break-inside: avoid;
  break-inside: avoid;
}

.message.error {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(190, 59, 25, 0.06);
}

.message pre,
.message code {
  font-family: var(--mono);
  font-size: 0.85em;
}

.empty-state {
  margin: auto;
  text-align: center;
  color: var(--text-muted);
  max-width: 420px;
}

.empty-state h3 {
  color: var(--fh-burgundy);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.composer {
  display: flex;
  gap: 0.75rem;
  padding: 1rem 1.5rem 1.5rem;
  border-top: 1px solid var(--fh-border-warm);
  background: var(--fh-white);
  flex-shrink: 0;
}

.composer textarea {
  flex: 1;
  resize: none;
  min-height: 52px;
  max-height: 160px;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--fh-white);
  color: var(--text-body);
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.45;
}

.composer textarea::placeholder {
  color: #9a8a8b;
}

.composer textarea:focus {
  outline: none;
  border-color: rgba(0, 128, 128, 0.5);
  box-shadow: 0 0 0 3px rgba(0, 128, 128, 0.08);
}

.composer-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex-shrink: 0;
}

.composer button {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0 1.25rem;
  border: 1px solid var(--fh-teal);
  border-radius: var(--radius);
  background: var(--fh-teal);
  color: var(--fh-white);
  font-family: inherit;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.composer button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.composer button:not(:disabled):hover {
  background: var(--fh-teal-dark);
  border-color: var(--fh-teal-dark);
}

.composer button.cancel-btn {
  background: var(--fh-white);
  color: var(--fh-orange);
  border-color: rgba(190, 59, 25, 0.45);
  box-shadow: none;
}

.composer button.cancel-btn:not(:disabled):hover {
  background: rgba(190, 59, 25, 0.06);
  border-color: var(--fh-orange);
}

.message.cancelled {
  align-self: flex-start;
  color: var(--text-muted);
  font-style: italic;
  background: rgba(0, 0, 0, 0.03);
  border: 1px dashed var(--border);
}

.agent-activity {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-width: min(100%, 420px);
}

.activity-header {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.activity-status {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.activity-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
}

.activity-steps li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.activity-steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border);
}

.activity-steps li.active {
  color: var(--fh-teal-muted);
  font-weight: 600;
}

.activity-steps li.active::before {
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
  animation: activity-pulse 1.2s infinite ease-in-out;
}

.activity-steps li.done {
  color: var(--text-body);
}

.activity-steps li.done::before {
  background: var(--accent);
}

@keyframes activity-pulse {
  0%, 100% { opacity: 0.55; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1); }
}

.typing {
  display: inline-flex;
  gap: 4px;
  padding: 0.2rem 0;
  flex-shrink: 0;
}

.typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 1.2s infinite ease-in-out;
}

.typing span:nth-child(2) { animation-delay: 0.15s; }
.typing span:nth-child(3) { animation-delay: 0.3s; }

@keyframes pulse {
  0%, 80%, 100% { opacity: 0.25; transform: scale(0.85); }
  40% { opacity: 1; transform: scale(1); }
}

.small-btn {
  padding: 0.35rem 0.65rem;
  font-size: 0.82rem;
}

.user-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.user-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-panel {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  overflow: hidden;
}

.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.history-header h3 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-weight: 700;
}

.history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.history-item {
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: var(--radius);
  padding: 0.55rem 0.65rem;
  cursor: pointer;
  font-family: inherit;
  color: var(--text-body);
}

.history-item:hover,
.history-item.active {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.history-item-title {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-item-meta {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.login-screen {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100000;
  align-items: center;
  justify-content: center;
  background: rgba(53, 20, 23, 0.45);
  backdrop-filter: blur(4px);
  padding: 1rem;
}

.login-screen.is-open {
  display: flex;
}

.login-card {
  width: min(100%, 380px);
  background: var(--fh-white);
  border-radius: 12px;
  padding: 2rem 1.75rem;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.18);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.login-card h1 {
  font-size: 1.35rem;
  color: var(--text);
}

.login-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: -0.35rem;
}

.login-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.login-field input {
  font: inherit;
  font-weight: 400;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.login-error {
  color: var(--danger);
  font-size: 0.88rem;
}

.login-submit {
  margin-top: 0.25rem;
  padding: 0.7rem 1rem;
  border: none;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.login-submit:hover {
  background: var(--accent-dark);
}

.app.auth-locked .chat-panel,
.app.auth-locked .sidebar {
  filter: blur(2px);
  pointer-events: none;
}

@media (max-width: 768px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    overflow: hidden;
  }

  .sidebar {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 1rem;
    gap: 0.75rem;
    height: auto;
    flex-shrink: 0;
  }

  .agent-nav {
    flex-direction: row;
    width: 100%;
  }

  .agent-btn {
    flex: 1;
  }

  .sidebar-footer {
    display: none;
  }
}