:root {
  --bg: #faf6f0;
  --surface: #ffffff;
  --ink: #2b2420;
  --ink-soft: #6b5f57;
  --line: #e8dfd4;
  --accent: #d9542b;
  --accent-ink: #ffffff;
  --accent-soft: #fbe9e1;
  --user: #2f4a3a;
  --user-ink: #ffffff;
  --warn-bg: #fff4d6;
  --warn-ink: #7a5300;
  --bad-bg: #fde6e3;
  --bad-ink: #8a2416;
  --radius: 14px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 var(--font);
  display: flex;
  flex-direction: column;
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* ---------- Top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 14px;
}

.brand-name {
  font-weight: 700;
  font-size: 16px;
}

.brand-sub {
  color: var(--ink-soft);
  font-size: 12.5px;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.who {
  color: var(--ink-soft);
  font-size: 13px;
  padding: 0 6px;
}

.banner {
  background: var(--warn-bg);
  color: var(--warn-ink);
  text-align: center;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
}

/* ---------- Buttons ---------- */

.btn {
  font: inherit;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 8px 16px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  line-height: 1.2;
}

.btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}

.btn.primary:hover:not(:disabled) {
  filter: brightness(0.95);
}

.btn.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
  font-size: 13.5px;
  padding: 6px 12px;
}

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

.btn.link {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
  font-weight: 600;
  font-size: 13.5px;
  border-radius: 0;
}

.btn.link.urgent:not(:disabled) {
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 999px;
}

.btn.chip {
  background: var(--bg);
  border-color: var(--line);
  padding: 3px 12px;
  font-size: 13px;
}

.btn.small {
  padding: 6px 12px;
  font-size: 13px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Signed out ---------- */

.center-card {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 420px;
  text-align: center;
}

.card h1 {
  margin: 0 0 8px;
  font-size: 22px;
}

.card p {
  color: var(--ink-soft);
  margin: 0 0 20px;
}

.card .fine {
  font-size: 12.5px;
  margin: 16px 0 0;
}

.error {
  background: var(--bad-bg);
  color: var(--bad-ink) !important;
  border-radius: 8px;
  padding: 8px 12px;
}

/* ---------- Chat ---------- */

.chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.thread {
  flex: 1;
  overflow-y: auto;
  padding: 24px 16px 8px;
}

.thread > * {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.empty {
  text-align: center;
  padding: 48px 8px 16px;
}

.empty h1 {
  font-size: 24px;
  margin: 0 0 8px;
}

.empty p {
  color: var(--ink-soft);
  max-width: 520px;
  margin: 0 auto 24px;
}

.examples {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

.example {
  font: inherit;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 16px;
  cursor: pointer;
  color: var(--ink);
}

.example:hover {
  border-color: var(--accent);
}

.msg {
  display: flex;
  margin-bottom: 16px;
}

.msg.user {
  justify-content: flex-end;
}

.msg .bubble {
  border-radius: var(--radius);
  padding: 12px 16px;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.msg.user .bubble {
  background: var(--user);
  color: var(--user-ink);
  max-width: 80%;
  white-space: pre-wrap;
}

.msg.assistant .bubble {
  background: var(--surface);
  border: 1px solid var(--line);
  width: 100%;
}

.msg.error .bubble {
  background: var(--bad-bg);
  color: var(--bad-ink);
  border-color: transparent;
}

.thinking .bubble {
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 10px;
}

.dots {
  display: inline-flex;
  gap: 4px;
}

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

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

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

@keyframes blink {
  0%,
  80%,
  100% {
    opacity: 0.25;
  }
  40% {
    opacity: 1;
  }
}

.answer p {
  margin: 0 0 10px;
}

.answer ol,
.answer ul {
  margin: 0 0 10px;
  padding-left: 22px;
}

.answer li {
  margin-bottom: 4px;
}

.answer h4 {
  margin: 12px 0 6px;
  font-size: 15px;
}

.answer > :last-child {
  margin-bottom: 0;
}

.answer code {
  background: var(--bg);
  border-radius: 4px;
  padding: 1px 4px;
  font-size: 13px;
}

.answer a {
  color: var(--accent);
}

.cite {
  display: inline-grid;
  place-items: center;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  margin-left: 2px;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent) !important;
  font-size: 11px;
  font-weight: 700;
  text-decoration: none;
  vertical-align: 2px;
}

.status-badge {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 600;
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 10px;
}

.status-badge.partial {
  background: var(--warn-bg);
  color: var(--warn-ink);
}

.status-badge.escalate {
  background: var(--bad-bg);
  color: var(--bad-ink);
}

.sources {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
}

.sources-label {
  font-weight: 600;
  color: var(--ink-soft);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.sources-list {
  margin: 0;
  padding-left: 22px;
}

.sources-list a {
  color: var(--accent);
}

.feedback {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-soft);
  flex-wrap: wrap;
}

.feedback-detail {
  margin-top: 10px;
  display: grid;
  gap: 10px;
  font-size: 13.5px;
  background: var(--bg);
  border-radius: 10px;
  padding: 12px;
}

.feedback-detail label {
  display: grid;
  gap: 4px;
  color: var(--ink-soft);
}

.feedback-detail select,
.feedback-detail textarea {
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 8px;
  background: var(--surface);
  color: var(--ink);
}

.feedback-detail .row {
  display: flex;
  gap: 8px;
}

/* ---------- Composer ---------- */

.composer-wrap {
  padding: 8px 16px 16px;
  background: linear-gradient(to bottom, transparent, var(--bg) 24px);
}

.composer,
.composer-foot {
  max-width: 760px;
  margin: 0 auto;
}

.composer {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 8px 8px 8px 16px;
}

.composer:focus-within {
  border-color: var(--accent);
}

.composer textarea {
  flex: 1;
  border: none;
  outline: none;
  resize: none;
  font: inherit;
  color: var(--ink);
  background: transparent;
  padding: 6px 0;
  max-height: 200px;
}

.composer-foot {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 8px 4px 0;
  flex-wrap: wrap;
}

.note {
  color: var(--ink-soft);
  font-size: 12px;
  flex: 1;
  min-width: 240px;
}

@media (max-width: 600px) {
  .who {
    display: none;
  }
  .card {
    padding: 24px 20px;
  }
}