:root {
  --indigo: #4f46e5;
  --indigo-soft: #eef2ff;
  --ink: #111827;
  --body: #4b5563;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #ffffff;
  --surface: #fafafa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --indigo: #818cf8;
    --indigo-soft: #1e1b4b;
    --ink: #f9fafb;
    --body: #d1d5db;
    --muted: #9ca3af;
    --line: #27272a;
    --bg: #0b0b0f;
    --surface: #131318;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1rem;
}

.brand {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--ink);
}

.brand svg {
  width: 2rem;
  height: 2rem;
  border-radius: 0.5rem;
  display: block;
}

.brand span {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ---------- landing ---------- */

.hero {
  padding: 4rem 0 3rem;
}

.badge {
  display: inline-block;
  margin: 0 0 1.25rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: var(--indigo-soft);
  color: var(--indigo);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

h1 {
  margin: 0 0 1.125rem;
  color: var(--ink);
  font-size: clamp(2rem, 6vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.033em;
  font-weight: 700;
}

.lede {
  margin: 0 0 2rem;
  font-size: clamp(1.0625rem, 2.4vw, 1.1875rem);
  max-width: 34rem;
}

.channels {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 2.5rem;
  padding: 0;
  list-style: none;
}

.channels li {
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--muted);
  background: var(--surface);
}

.cta {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 0.625rem;
  background: var(--indigo);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}

.cta:hover {
  filter: brightness(1.08);
}

/* ---------- document pages ---------- */

.doc-head {
  border-bottom: 1px solid var(--line);
  padding: 1.5rem 0;
}

article {
  padding: 3rem 0 4rem;
}

article h1 {
  font-size: clamp(1.875rem, 5vw, 2.5rem);
  margin-bottom: 0.5rem;
}

.updated {
  margin: 0 0 2.5rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

article h2 {
  margin: 2.75rem 0 0.75rem;
  color: var(--ink);
  font-size: 1.3125rem;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

article h3 {
  margin: 1.75rem 0 0.5rem;
  color: var(--ink);
  font-size: 1.0625rem;
}

article p,
article li {
  margin: 0 0 1rem;
}

article ul {
  padding-left: 1.25rem;
}

article li {
  margin-bottom: 0.5rem;
}

article a {
  color: var(--indigo);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0 1.75rem;
  font-size: 0.9375rem;
}

th,
td {
  text-align: left;
  padding: 0.625rem 0.75rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}

footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  font-size: 0.875rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

footer a {
  color: var(--muted);
}

/* ---------- product landing ---------- */

.site-head {
  border-bottom: 1px solid var(--line);
  padding: 1.25rem 0;
}

.site-head-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  font-size: 0.9375rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--ink);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.cta-secondary {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  border-radius: 0.625rem;
  border: 1px solid var(--line);
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}

.cta-secondary:hover {
  background: var(--surface);
}

.hero-note,
.contact-note {
  margin: 1.5rem 0 0;
  font-size: 0.9375rem;
  color: var(--muted);
  max-width: 34rem;
}

.contact-note a {
  color: var(--indigo);
}

.section {
  padding: 4rem 0;
  border-top: 1px solid var(--line);
}

.section-alt {
  background: var(--surface);
}

.section h2 {
  margin: 0 0 0.75rem;
  color: var(--ink);
  font-size: clamp(1.625rem, 4vw, 2.125rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.section-lede {
  margin: 0 0 2rem;
  max-width: 36rem;
}

.section h4 {
  margin: 0 0 0.375rem;
  color: var(--ink);
  font-size: 1.0625rem;
  line-height: 1.35;
}

.section p {
  margin: 0 0 1rem;
}

.group-label {
  margin: 2rem 0 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--bg);
}

.feature p {
  margin: 0;
  font-size: 0.9375rem;
}

.feature-planned {
  border-style: dashed;
}

.status {
  display: inline-block;
  margin-bottom: 0.75rem;
  white-space: nowrap;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.status-live {
  background: var(--indigo-soft);
  color: var(--indigo);
}

.status-planned {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted);
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 1.5rem;
}

.steps li {
  position: relative;
  padding-left: 3.25rem;
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--indigo);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps p {
  margin: 0;
}

/* preview mockup */

.preview {
  margin: 0;
}

.preview-label {
  margin: 0 0 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.mock {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--bg);
  overflow: hidden;
  font-size: 0.8125rem;
  line-height: 1.4;
}

@media (min-width: 40rem) {
  .mock {
    grid-template-columns: 14rem 1fr 11rem;
  }

  .mock-list,
  .mock-thread {
    border-right: 1px solid var(--line);
  }
}

.mock-list,
.mock-thread,
.mock-profile {
  padding: 0.75rem;
  min-width: 0;
}

.mock-tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 0.5rem;
}

.mock-tab {
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  color: var(--muted);
}

.mock-tab-active {
  background: var(--indigo-soft);
  color: var(--indigo);
  font-weight: 600;
}

.mock-row {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem;
  border-radius: 0.5rem;
}

.mock-row-active {
  background: var(--surface);
}

.mock-row-body {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.mock-row-top {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.mock-row-top strong {
  color: var(--ink);
}

.mock-row-top em {
  font-style: normal;
  color: var(--muted);
  font-size: 0.75rem;
}

.mock-row-text {
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mock-avatar {
  flex: none;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--indigo-soft);
  color: var(--indigo);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mock-avatar-lg {
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 0.5rem;
}

.mock-thread {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mock-thread-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}

.mock-chip {
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.75rem;
}

.mock-claim {
  margin-left: auto;
  color: var(--indigo);
  font-weight: 600;
  font-size: 0.75rem;
}

.mock-msg {
  max-width: 80%;
  padding: 0.5rem 0.75rem;
  border-radius: 0.75rem;
}

.mock-msg-in {
  align-self: flex-start;
  background: var(--surface);
  border: 1px solid var(--line);
}

.mock-msg-out {
  align-self: flex-end;
  background: var(--indigo);
  color: #fff;
}

.mock-composer {
  margin-top: auto;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  color: var(--muted);
}

.mock-profile {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  color: var(--ink);
}

.mock-profile-label {
  margin-top: 0.75rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.mock-muted {
  color: var(--muted);
}

.status-testing {
  background: #fef3c7;
  color: #92400e;
}

@media (prefers-color-scheme: dark) {
  .status-testing {
    background: #3b2f0b;
    color: #fcd34d;
  }
}

.channel-status td:first-child {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}

.channel-status .status {
  margin-bottom: 0;
}