:root {
  color-scheme: dark;
  --background: #0b0b0c;
  --surface: #151517;
  --surface-raised: #1c1c1f;
  --border: #2a2a2d;
  --border-strong: #52525b;
  --foreground: #f5f5f5;
  --muted: #a1a1aa;
  --error: #d16b6b;
  --radius: 12px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  background: var(--background);
  color: var(--foreground);
  text-rendering: optimizeLegibility;
}

button,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

.app-shell {
  width: min(100%, 832px);
  height: 100vh;
  height: 100dvh;
  margin: 0 auto;
  padding: 40px 16px 20px;
  display: flex;
  flex-direction: column;
}

.app-header {
  flex: 0 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.app-header h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.app-header p,
.welcome-copy,
.composer-hint,
.disclaimer,
.section-label {
  color: var(--muted);
}

.app-header p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.6;
}

.conversation {
  flex: 1;
  min-height: 0;
  padding: 28px 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-color: var(--border-strong) transparent;
}

.welcome {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.welcome-copy {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.examples {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-label,
.composer-hint,
.disclaimer {
  margin: 0;
  font-size: 12px;
}

.example-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.example-button,
.button-quiet {
  border: 1px solid var(--border);
  background: transparent;
}

.example-button {
  padding: 9px 12px;
  border-radius: 9px;
  color: var(--muted);
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: border-color 150ms ease, color 150ms ease,
    background-color 150ms ease;
}

.example-button:hover,
.example-button:focus-visible,
.button-quiet:hover,
.button-quiet:focus-visible {
  border-color: var(--border-strong);
  color: var(--foreground);
  background: var(--surface);
}

.message-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.message {
  max-width: 95%;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 15px;
  line-height: 1.75;
}

.message-user {
  align-self: flex-end;
  max-width: 85%;
  padding: 11px 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-raised);
}

.message-agent {
  align-self: flex-start;
  width: 100%;
  white-space: normal;
}

.message-agent > :first-child {
  margin-top: 0;
}

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

.message-agent p,
.message-agent ul,
.message-agent ol,
.message-agent blockquote,
.message-agent .table-scroll {
  margin: 0 0 16px;
}

.message-agent h1,
.message-agent h2,
.message-agent h3 {
  margin: 24px 0 10px;
  line-height: 1.4;
}

.message-agent h1 {
  font-size: 20px;
}

.message-agent h2 {
  font-size: 18px;
}

.message-agent h3 {
  font-size: 16px;
}

.message-agent ul,
.message-agent ol {
  padding-left: 24px;
}

.message-agent li + li {
  margin-top: 6px;
}

.message-agent strong {
  color: #fff;
  font-weight: 700;
}

.message-agent code {
  padding: 2px 5px;
  border-radius: 5px;
  background: var(--surface-raised);
  font-size: 0.9em;
}

.message-agent blockquote {
  padding-left: 14px;
  border-left: 3px solid var(--border-strong);
  color: var(--muted);
}

.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  scrollbar-color: var(--border-strong) transparent;
}

.message-agent table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.55;
}

.message-agent th,
.message-agent td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.message-agent th {
  background: var(--surface-raised);
  color: var(--foreground);
  font-weight: 650;
  white-space: nowrap;
}

.message-agent tbody tr:nth-child(even) {
  background: rgb(255 255 255 / 2%);
}

.message-agent tbody tr:last-child td {
  border-bottom: 0;
}

.message-error {
  color: var(--error);
}

.follow-up-hint {
  width: fit-content;
  margin-top: 10px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--muted);
  font-size: 12px;
}

.loading-message {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 14px;
}

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

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

.loading-dots span:nth-child(2) {
  animation-delay: 160ms;
}

.loading-dots span:nth-child(3) {
  animation-delay: 320ms;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 1;
  }
}

.composer {
  flex: 0 0 auto;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 150ms ease;
}

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

.composer-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.composer textarea {
  flex: 1;
  min-width: 0;
  min-height: 44px;
  max-height: 180px;
  padding: 10px 8px;
  resize: none;
  overflow-y: auto;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--foreground);
  font-size: 15px;
  line-height: 1.6;
}

.composer textarea::placeholder {
  color: #71717a;
}

.button {
  min-height: 40px;
  border-radius: 9px;
  cursor: pointer;
  transition: opacity 150ms ease, background-color 150ms ease,
    border-color 150ms ease;
}

.button-primary {
  min-width: 76px;
  padding: 0 18px;
  border: 1px solid var(--foreground);
  background: var(--foreground);
  color: var(--background);
  font-size: 14px;
  font-weight: 650;
}

.button-quiet {
  min-height: 34px;
  padding: 0 11px;
  color: var(--muted);
  font-size: 12px;
}

.button:disabled,
.example-button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.composer-hint {
  padding: 3px 8px 1px;
}

.disclaimer {
  flex: 0 0 auto;
  padding-top: 14px;
  text-align: center;
  line-height: 1.5;
}

:focus-visible {
  outline: 2px solid #71717a;
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

@media (max-width: 640px) {
  .app-shell {
    padding-top: 24px;
  }

  .app-header {
    gap: 12px;
  }

  .app-header p {
    max-width: 270px;
  }

  .conversation {
    padding: 22px 0;
  }

  .example-list {
    flex-direction: column;
  }

  .example-button {
    width: 100%;
  }

  .composer-hint {
    display: none;
  }

  .button-primary {
    min-width: 66px;
    padding: 0 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}