/* Relayweave Labs homepage — tokens lifted from the Claude Design source. */

:root {
  --rw-bg: #f6f6f2;
  --rw-bg-hover: #ffffff;
  --rw-ink: #111214;
  --rw-ink-strong: #161719;
  --rw-muted: #686a70;
  --rw-rule: #dcdcd6;
  --rw-accent: #e7653f;

  --rw-dark-bg: #161719;
  --rw-dark-bg-hover: #1b1c1f;
  --rw-dark-rule: #2a2b2e;
  --rw-dark-muted: #9a9ca2;
  --rw-dark-muted-strong: #8a8c92;
  --rw-dark-accent-rule: #4a3129;

  --rw-font-sans: "Instrument Sans", system-ui, sans-serif;
  --rw-font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --rw-container: 1240px;
  --rw-gutter: 40px;
  --rw-radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--rw-bg);
  color: var(--rw-ink);
  font-family: var(--rw-font-sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

h1,
h2,
h3,
p {
  margin: 0;
}

ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

svg {
  display: block;
}

[hidden] {
  display: none !important;
}

.container {
  max-width: var(--rw-container);
  margin: 0 auto;
  padding-left: var(--rw-gutter);
  padding-right: var(--rw-gutter);
}

/* ---------- shared primitives ---------- */

.eyebrow {
  font-family: var(--rw-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rw-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.eyebrow--dark {
  color: var(--rw-dark-muted-strong);
}

.eyebrow__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--rw-accent);
  display: inline-block;
}

.button {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--rw-radius);
  padding: 13px 22px;
  transition:
    background 0.2s,
    color 0.2s,
    border-color 0.2s;
}

.button--primary {
  color: var(--rw-bg);
  background: var(--rw-ink-strong);
}

.button--primary:hover {
  background: var(--rw-accent);
  color: #fff;
}

.button--ghost {
  color: var(--rw-ink);
  border: 1px solid var(--rw-rule);
  background: transparent;
}

.button--ghost:hover {
  border-color: var(--rw-ink);
  color: var(--rw-ink);
}

.button--small {
  font-size: 14px;
  border-radius: 7px;
  padding: 9px 16px;
  margin-left: 4px;
}

.button--large {
  padding: 14px 24px;
}

.mono-link {
  display: inline-block;
  margin-top: 24px;
  font-family: var(--rw-font-mono);
  font-size: 12px;
  color: var(--rw-muted);
}

.mono-link:hover {
  color: var(--rw-accent);
}

.tag {
  font-family: var(--rw-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--rw-dark-muted-strong);
  border: 1px solid var(--rw-dark-rule);
  border-radius: 4px;
  padding: 3px 7px;
  white-space: nowrap;
}

.tag--accent {
  color: var(--rw-accent);
  border-color: var(--rw-dark-accent-rule);
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(246, 246, 242, 0.86);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rw-rule);
}

.site-header__inner {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

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

.brand__name {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.brand__name--small {
  font-size: 14px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav__link {
  font-size: 14px;
  color: var(--rw-muted);
}

.site-nav__link:hover {
  color: var(--rw-ink);
}

/* ---------- hero ---------- */

.hero {
  padding-top: 120px;
  padding-bottom: 96px;
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 64px;
  align-items: center;
}

.hero__copy .eyebrow {
  margin-bottom: 32px;
}

.hero__title {
  font-size: 76px;
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 500;
  text-wrap: balance;
}

.hero__lede {
  margin-top: 28px;
  max-width: 540px;
  font-size: 19px;
  line-height: 1.55;
  color: var(--rw-muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
}

.circuit {
  overflow: visible;
}

.circuit__wire {
  stroke-dasharray: var(--rw-dash, 600);
  stroke-dashoffset: var(--rw-dash, 600);
  animation: rw-draw 1.4s ease-out both;
}

.circuit__wire--long {
  animation-duration: 1.8s;
}

.circuit__pulse {
  animation: rw-pulse 3s ease-in-out infinite;
}

.circuit__labels {
  font-family: var(--rw-font-mono);
  font-size: 9px;
  fill: var(--rw-muted);
  letter-spacing: 1px;
}

.rise {
  animation: rw-rise 0.7s ease-out both;
}

.rise--slow {
  animation-duration: 0.9s;
}

/* ---------- sections ---------- */

.section--rule {
  border-top: 1px solid var(--rw-rule);
}

.section > .container {
  padding-top: 112px;
  padding-bottom: 112px;
}

.section--compact > .container {
  padding-top: 96px;
  padding-bottom: 96px;
}

.split {
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: 64px;
}

.split--intro {
  margin-bottom: 56px;
}

.section__title {
  margin-top: 16px;
  font-size: 40px;
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 500;
}

.section__title--large {
  margin-top: 0;
  font-size: 44px;
  line-height: 1.06;
}

.section__lede {
  margin-top: 20px;
  max-width: 560px;
  font-size: 17px;
  line-height: 1.6;
  color: var(--rw-dark-muted);
}

/* ---------- capabilities ---------- */

.capabilities {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rw-rule);
  border: 1px solid var(--rw-rule);
  border-radius: 10px;
  overflow: hidden;
}

.capability {
  background: var(--rw-bg);
  padding: 32px 28px 36px;
  transition: background 0.25s;
}

.capability:hover {
  background: var(--rw-bg-hover);
}

.capability__title {
  margin: 24px 0 10px;
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.015em;
}

.capability__body {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--rw-muted);
}

/* ---------- lab (dark) ---------- */

.section--dark {
  background: var(--rw-dark-bg);
  color: var(--rw-bg);
}

.projects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.project {
  border: 1px solid var(--rw-dark-rule);
  border-radius: 10px;
  padding: 26px 24px 22px;
  display: flex;
  flex-direction: column;
  min-height: 230px;
  transition:
    border-color 0.25s,
    background 0.25s;
}

.project:hover {
  border-color: var(--rw-accent);
  background: var(--rw-dark-bg-hover);
}

.project__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.project__name {
  font-family: var(--rw-font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.project__body {
  margin-top: 14px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--rw-dark-muted);
}

.project__foot {
  margin-top: auto;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--rw-dark-rule);
  font-family: var(--rw-font-mono);
  font-size: 11px;
}

.project__stack {
  color: var(--rw-muted);
}

.project__link {
  color: var(--rw-bg);
}

.project__link:hover {
  color: var(--rw-accent);
}

/* ---------- approach ---------- */

.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  padding: 32px 0;
  border-top: 1px solid var(--rw-rule);
}

.step:last-child {
  border-bottom: 1px solid var(--rw-rule);
}

.step__index {
  font-family: var(--rw-font-mono);
  font-size: 12px;
  color: var(--rw-accent);
  padding-top: 5px;
}

.step__title {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.step__body {
  margin-top: 10px;
  max-width: 620px;
  font-size: 16px;
  line-height: 1.6;
  color: var(--rw-muted);
}

/* ---------- notes ---------- */

.note {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 24px;
  align-items: baseline;
  padding: 26px 0;
  border-top: 1px solid var(--rw-rule);
  transition: padding-left 0.25s;
}

.note:last-child {
  border-bottom: 1px solid var(--rw-rule);
}

.note:hover {
  padding-left: 8px;
}

.note:hover .note__title {
  color: var(--rw-accent);
}

.note__index {
  font-family: var(--rw-font-mono);
  font-size: 12px;
  color: var(--rw-muted);
}

.note__title {
  font-size: 22px;
  letter-spacing: -0.02em;
  font-weight: 500;
  transition: color 0.2s;
}

.note__meta {
  font-family: var(--rw-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--rw-muted);
}

/* ---------- contact ---------- */

.cta {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 48px;
  align-items: end;
}

.section > .cta {
  padding-top: 120px;
  padding-bottom: 128px;
}

.cta__title {
  max-width: 620px;
  font-size: 52px;
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 500;
}

.cta__lede {
  margin-top: 22px;
  max-width: 520px;
  font-size: 17px;
  line-height: 1.6;
  color: var(--rw-muted);
}

.cta__action {
  display: flex;
  justify-content: flex-start;
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--rw-rule);
}

.site-footer__inner {
  padding-top: 56px;
  padding-bottom: 56px;
  display: grid;
  grid-template-columns: 4fr 2fr 2fr 4fr;
  gap: 40px;
}

.site-footer__blurb {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--rw-muted);
  max-width: 280px;
}

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

.footer-links__heading {
  font-family: var(--rw-font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--rw-muted);
  margin-bottom: 4px;
}

.footer-links a {
  font-size: 13.5px;
  color: var(--rw-muted);
}

.footer-links a:hover {
  color: var(--rw-ink);
}

.site-footer__legal {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  font-family: var(--rw-font-mono);
  font-size: 11px;
  color: var(--rw-muted);
}

/* ---------- motion ---------- */

@keyframes rw-draw {
  from {
    stroke-dashoffset: var(--rw-dash, 600);
  }
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes rw-pulse {
  0%,
  100% {
    opacity: 0.25;
    r: 3;
  }
  50% {
    opacity: 1;
    r: 4.2;
  }
}

@keyframes rw-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  html {
    scroll-behavior: auto;
  }

  .circuit__wire {
    stroke-dashoffset: 0;
  }
}

/* ---------- responsive ---------- */

@media (max-width: 1024px) {
  .hero__title {
    font-size: 60px;
  }

  .capabilities,
  .projects {
    grid-template-columns: 1fr;
  }

  .project {
    min-height: 0;
  }

  .split {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__legal {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }
}

@media (max-width: 768px) {
  :root {
    --rw-gutter: 24px;
  }

  .site-header__inner {
    height: auto;
    padding-top: 14px;
    padding-bottom: 14px;
    flex-wrap: wrap;
    gap: 12px;
  }

  .site-nav {
    gap: 18px;
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 72px;
    padding-bottom: 64px;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__title {
    font-size: 44px;
  }

  .hero__lede {
    font-size: 17px;
  }

  .section > .container,
  .section--compact > .container {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .section__title,
  .section__title--large {
    font-size: 32px;
  }

  .cta,
  .section > .cta {
    padding-top: 80px;
    padding-bottom: 88px;
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: start;
  }

  .cta__title {
    font-size: 36px;
  }

  .step {
    grid-template-columns: 40px 1fr;
    gap: 16px;
  }

  .step__title {
    font-size: 22px;
  }

  .note {
    grid-template-columns: 40px 1fr;
    gap: 8px 16px;
  }

  .note__meta {
    grid-column: 2;
  }

  .note__title {
    font-size: 19px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ---------- contact modal ---------- */

.modal {
  border: 0;
  padding: 0;
  background: transparent;
  max-width: none;
  max-height: none;
  width: 100%;
  height: 100%;
  display: none;
  place-items: center;
  color: var(--rw-ink);
}

.modal[open] {
  display: grid;
}

.modal::backdrop {
  background: rgba(22, 23, 25, 0.55);
  backdrop-filter: blur(6px);
}

.modal__panel {
  position: relative;
  width: min(1040px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  background: var(--rw-bg);
  border: 1px solid var(--rw-rule);
  border-radius: 10px;
  padding: 64px 56px 56px;
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: 64px;
  align-items: start;
  animation: rw-rise 0.35s ease-out both;
}

.modal__close {
  position: absolute;
  top: 24px;
  right: 28px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  background: transparent;
  padding: 6px 0;
  font-family: var(--rw-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rw-muted);
  cursor: pointer;
  transition: color 0.2s;
}

.modal__close:hover {
  color: var(--rw-ink);
}

.modal__title {
  margin-top: 16px;
  font-size: 32px;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 500;
  text-wrap: balance;
}

.modal__lede {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--rw-muted);
  max-width: 300px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-top: 6px;
}

.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.field__label {
  font-family: var(--rw-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rw-muted);
}

.field__optional {
  text-transform: none;
  letter-spacing: 0.04em;
  opacity: 0.65;
}

.field__input {
  font: inherit;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--rw-ink);
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 8px 0 10px;
  border-bottom: 1px solid var(--rw-rule);
  transition: border-color 0.2s;
}

.field__input:focus {
  outline: none;
  border-bottom-color: var(--rw-ink);
}

.field__input--area {
  resize: none;
  min-height: 88px;
  line-height: 1.5;
}

/* Interaction-only Turnstile is usually 0px tall. Cancel the flex gap so an
   invisible widget leaves no hole, while a visible one still gets its spacing. */
.contact-form__verify {
  margin-top: -28px;
  padding-top: 28px;
}

.contact-form__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 4px;
}

.contact-form__status {
  font-family: var(--rw-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rw-muted);
  min-height: 1.4em;
}

.contact-form__status[data-tone="error"] {
  color: var(--rw-accent);
}

.button:disabled {
  opacity: 0.6;
  cursor: progress;
}

.button--primary,
.button--ghost {
  cursor: pointer;
}

.contact-success {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  padding-top: 6px;
}

.contact-success__title {
  font-size: 30px;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 500;
}

.contact-success__body {
  color: var(--rw-muted);
  font-size: 16px;
  line-height: 1.6;
  max-width: 440px;
}

.contact-success .button {
  margin-top: 12px;
}

@media (max-width: 1024px) {
  .modal__panel {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 64px 40px 40px;
  }
}

@media (max-width: 768px) {
  .modal__panel {
    padding: 60px 24px 28px;
  }

  .modal__close {
    top: 20px;
    right: 24px;
  }

  .modal__title {
    font-size: 28px;
  }

  .contact-form__row {
    grid-template-columns: 1fr;
  }

  .contact-form__foot {
    flex-direction: column-reverse;
    align-items: stretch;
  }

  .contact-form__foot .button {
    text-align: center;
  }
}

/* ---------- notes pages ---------- */

.site-nav__link--current {
  color: var(--rw-ink);
}

.notes-page__lede,
.note-page__lede {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.6;
  color: var(--rw-muted);
  max-width: 340px;
}

.notes-search {
  margin-top: 36px;
}

.notes-search .field__input {
  font-size: 16px;
}

.notes-search .field__input::-webkit-search-cancel-button {
  -webkit-appearance: none;
}

.notes-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 22px;
}

.notes-tags__tag {
  font-family: var(--rw-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rw-muted);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}

.notes-tags__tag:hover {
  color: var(--rw-ink);
}

.notes-tags__tag--active {
  color: var(--rw-ink);
  border-bottom-color: var(--rw-accent);
}

.note__main {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.note__desc {
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--rw-muted);
  max-width: 560px;
}

.note:hover .note__desc {
  color: var(--rw-muted);
}

.notes__empty {
  padding: 26px 0;
  border-top: 1px solid var(--rw-rule);
  border-bottom: 1px solid var(--rw-rule);
  color: var(--rw-muted);
}

/* ---------- single note ---------- */

.mono-link--back {
  margin-top: 0;
}

.note-page__meta {
  margin: 32px 0 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.note-page__meta dt {
  font-family: var(--rw-font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rw-muted);
  margin-bottom: 6px;
}

.note-page__meta dd {
  margin: 0;
  font-size: 14.5px;
}

.note-page__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
}

.note-page__tags a {
  font-family: var(--rw-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rw-muted);
}

.note-page__tags a:hover {
  color: var(--rw-accent);
}

.note-page__head {
  padding-bottom: 40px;
  border-bottom: 1px solid var(--rw-rule);
  margin-bottom: 40px;
}

.note-page__title {
  margin-top: 16px;
  font-size: 44px;
  line-height: 1.06;
  letter-spacing: -0.03em;
  font-weight: 500;
  text-wrap: balance;
  max-width: 720px;
}

.note-page__lede {
  font-size: 19px;
  line-height: 1.5;
  max-width: 620px;
}

.note-page__related {
  margin-top: 72px;
}

.note-page__related .notes {
  margin-top: 20px;
}

.prose {
  max-width: 680px;
  font-size: 17px;
  line-height: 1.7;
}

.prose > * + * {
  margin-top: 1.25em;
}

.prose h2,
.prose h3 {
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-top: 2.2em;
}

.prose h2 {
  font-size: 28px;
}

.prose h3 {
  font-size: 21px;
}

.prose__anchor {
  color: inherit;
}

.prose__anchor:hover {
  color: var(--rw-accent);
}

.prose a {
  color: var(--rw-ink);
  border-bottom: 1px solid var(--rw-rule);
  transition:
    border-color 0.2s,
    color 0.2s;
}

.prose a:hover {
  color: var(--rw-accent);
  border-bottom-color: var(--rw-accent);
}

.prose ul,
.prose ol {
  padding-left: 1.3em;
}

.prose li + li {
  margin-top: 0.5em;
}

.prose strong {
  font-weight: 600;
}

.prose blockquote {
  margin: 1.5em 0;
  padding-left: 20px;
  border-left: 2px solid var(--rw-accent);
  color: var(--rw-muted);
}

.prose code {
  font-family: var(--rw-font-mono);
  font-size: 0.86em;
  background: #fff;
  border: 1px solid var(--rw-rule);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}

.prose pre {
  background: var(--rw-dark-bg);
  color: var(--rw-bg);
  border-radius: 10px;
  padding: 22px 24px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.6;
}

.prose pre code {
  background: transparent;
  border: 0;
  padding: 0;
  font-size: inherit;
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--rw-rule);
  margin: 2.5em 0;
}

@media (max-width: 768px) {
  .note-page__title {
    font-size: 32px;
  }

  .note-page__lede {
    font-size: 17px;
  }

  .prose {
    font-size: 16px;
  }

  .prose h2 {
    font-size: 24px;
  }

  .note__main {
    grid-column: 2;
  }
}