/*
 * gestalt.fyi
 *
 * hi there.
 *
 */

/* --------------------------------
   1. design tokens
-------------------------------- */

:root {
  color-scheme: dark;

  /* greens */
  --forest: #163b32;
  --deep-evergreen: #102d26;
  --sage: #a9b9b1;

  /* blue */
  --french-blue: #274690;
  --wisteria: #8fa7e0;

  /* oranges */
  --clay: #dda15e;
  --clay-light: #ffc685;

  /* purple */
  --thistle: #cdb4db;

  /* lights */
  --ivory: #f8f5eb;
  --body-ink: #e0e5db;

  /* utility */
  --rule: rgb(248 245 235 / 25%);
  --surface-raised: rgb(255 255 255 / 4%);
  --display: "Inter", system-ui, sans-serif;
  --body: "Inter", system-ui, sans-serif;
  --serif: "Noto Serif", georgia, serif;
  --mono: "Roboto Mono", "SFMono-Regular", consolas, monospace;
  --page-width: 1440px;
  --page-gutter: clamp(24px, 5.5vw, 80px);
}

/* --------------------------------
   2. reset and page
-------------------------------- */

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--forest);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--forest);
  color: var(--ivory);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizelegibility;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

a {
  color: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--thistle);
  outline-offset: 5px;
}

.page-shell {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: var(--page-width);
  min-height: 100vh;
  margin-inline: auto;
  padding: 0 var(--page-gutter);
}

/* --------------------------------
   3. header
-------------------------------- */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 30px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ivory);
  text-decoration: none;
  white-space: nowrap;
}

.brand-name {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 400;
}

.brand-wave {
  display: block;
  width: 54px;
  height: auto;
  flex: 0 0 auto;
  color: var(--thistle);
}

.brand-mark {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  color: var(--thistle);
}

.bracketed {
  color: var(--thistle);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.035em;
}

.site-status {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  color: var(--thistle);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.09em;
  text-align: right;
  white-space: nowrap;
}

.site-status .footer-chevron {
  display: block;
  width: 10px;
  height: 13px;
  flex: 0 0 auto;
  color: var(--thistle);
}

/* --------------------------------
   4. main intro
-------------------------------- */

.hero {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: 100%;
  max-width: 760px;
  margin: auto;
  padding-block: 100px 112px;
}

.hero-title {
  max-width: 760px;
  margin: 0;
  color: var(--ivory);
  font-family: var(--display);
  font-size: clamp(38px, 5.4vw, 68px);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 1.08;
}

/* Field Guide index — selected Domain description */

.domain-description {
  border-radius: 8px;
  margin-top: 24px;
  padding: 20px 24px;
  background: var(--forest);
  color: var(--ivory);
}

.domain-description[hidden] {
  display: none;
}

.domain-description p {
  margin: 0;
  font-family: var(--body);
  font-size: 14px;
  line-height: 1.6;
}

.domain-description strong {
  font-weight: 700;
}

.hero-copy {
  max-width: 620px;
  margin-top: 32px;
  color: var(--body-ink);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.85;
}

.hero-copy p {
  margin: 0;
}

.footer-acknowledgement p {
  margin: 16px 0 0;
  color: var(--body-ink);
  font-family: var(--body);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.75;
}

.index-intro p {
  max-width: 620px;
  margin: 0;
  color: var(--body-ink);
  font-size: 16px;
  line-height: 1.5;
}

.hero-copy p + p {
  margin-top: 18px;
}

/* --------------------------------
   5. contact button and email
-------------------------------- */

.contact {
  position: relative;
  margin-top: 32px;
}

.contact-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 38px;
  padding: 8px 13px 8px 16px;
  border: 1px solid var(--thistle);
  border-radius: 4px;
  box-shadow: 0 4px 16px rgb(0 0 0 / 16%);
  background-color: var(--thistle);
  color: var(--forest);
  cursor: pointer;
  font-family: var(--body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.015em;
  transition:
    background-color 150ms ease,
    border-color 150ms ease,
    color 150ms ease;
}

.contact-trigger:hover {
  background-color: var(--ivory);
  border-color: var(--ivory);
  color: var(--forest);
}

.contact-trigger[aria-expanded="true"] {
  background-color: var(--thistle);
  border-color: var(--thistle);
  color: var(--forest);
}

.contact-trigger:focus-visible {
  outline: 2px solid var(--ivory);
  outline-offset: 4px;
}

.external-arrow {
  display: block;
  width: 13px;
  height: 13px;
  flex: 0 0 auto;
}

.contact-details {
  width: min(100%, 360px);
  margin-top: 20px;
  padding: 18px 20px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: transparent;
}

.contact-details[hidden] {
  display: none;
}

.contact-label {
  margin: 0 0 8px;
  color: var(--thistle);
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.1em;
}

.contact-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.email-address {
  font-family: var(--mono);
  color: var(--ivory);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.copy-email {
  padding: 0;
  border: 0;
  font-family: var(--body);
  font-size: 14px;
  color: var(--ivory);
  text-decoration: underline;
  text-underline-offset: 3px;
  background: transparent;
}

.copy-email:hover {
  color: var(--thistle);
}

.contact-feedback {
  min-height: 0;
  margin: 8px 0 0;
  color: var(--body-ink);
  font-size: 11px;
  line-height: 1.6;
}

/* --------------------------------
   6. footer
-------------------------------- */

.site-footer {
  display: grid;
  grid-template-columns:
    minmax(0, 1fr)
    minmax(0, 1.2fr)
    minmax(0, 2fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
  padding-block: 28px 36px;
  border-top: 1px solid var(--rule);
  color: var(--body-ink);
}

/* identity */

.footer-identity {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
  min-width: 0;
  grid-column: 1;
  grid-row: 1;
}

.footer-identity-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.035em;
}

.footer-smile {
  display: block;
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  color: var(--thistle);
}

.footer-separator {
  color: var(--thistle);
}

.footer-socials {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  min-height: 20px;
}

/* social icons */

.social-link,
.social-inactive {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  color: var(--thistle);
}

.social-link svg,
.social-inactive svg {
  display: block;
  width: 21px;
  height: 21px;
}

.social-link {
  border-radius: 6px;
  text-decoration: none;
  transition: color 150ms ease;
}

.social-link:hover {
  color: var(--ivory);
}

.social-link:focus-visible {
  color: var(--ivory);
  outline: 2px solid var(--ivory);
  outline-offset: 3px;
}

.social-inactive {
  opacity: 0.4;
  cursor: default;
}

@media (prefers-reduced-motion: reduce) {
  .social-link {
    transition: none;
  }
}

/* future stuff navigation */

.footer-navigation {
  min-width: 0;
  grid-column: 2;
  grid-row: 1;
}

.footer-heading {
  margin: 0;
  color: var(--thistle);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

/* footer navigation links */

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  color: var(--body-ink);
  font-family: var(--body);
  font-size: 14px;
  line-height: 1.6;
}

.footer-links li,
.footer-links a {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-link-arrow {
  display: inline-block;
  flex: 0 0 auto;
  color: var(--thistle);
  text-decoration: none;
}

.footer-links a {
  color: inherit;
  text-decoration: none;
}

.footer-link-label {
  text-decoration: none;
}

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

.footer-link-inactive,
.footer-link-inactive .footer-link-arrow {
  color: var(--sage);
}

/* acknowledgement of country: always was, always will be, aboriginal land */

.footer-acknowledgement {
  min-width: 0;
  grid-column: 3;
  grid-row: 1;
}

/* responsive footer */

@media (width <= 900px) {
  .site-footer {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
    gap: 36px;
  }

  .footer-acknowledgement {
    grid-column: 1 / -1;
    max-width: 680px;
    grid-row: 2;
  }

  /* tablet footer placement */

  .footer-identity {
    grid-column: 1;
    grid-row: 1;
  }

  .footer-navigation {
    grid-column: 2;
    grid-row: 1;
  }
}

@media (width <= 600px) {
  .site-footer {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding-block: 28px 36px;
  }

  .footer-navigation {
    grid-column: 1;
    grid-row: 1;
  }

  .footer-acknowledgement {
    grid-column: 1;
    grid-row: 2;
  }

  .footer-identity {
    grid-column: 1;
    grid-row: 3;
    padding-top: 24px;
    border-top: 1px solid var(--rule);
  }

  .footer-acknowledgement p {
    font-size: 13px;
  }
}

/* --------------------------------
   7. responsive layout
-------------------------------- */

@media (width >= 1100px) {
  .hero {
    padding-block: 120px 140px;
  }
}

@media (width <= 600px) {
  .page-shell {
    padding-inline: 24px;
  }

  .site-header {
    align-items: center;
    padding-top: 24px;
  }

  .brand {
    gap: 6px;
  }

  .brand-name {
    font-size: 14px;
  }

  .site-status {
    display: none;
  }

  .hero {
    padding-block: 90px 100px;
  }

  .hero-wave {
    width: min(100%, 260px);
    margin-bottom: 28px;
  }

  h1 {
    font-size: clamp(36px, 9vw, 48px);
    letter-spacing: -0.06em;
  }

  .hero-copy {
    margin-top: 25px;
    font-size: 14px;
    line-height: 1.8;
  }

  .contact {
    margin-top: 27px;
  }

  .site-footer {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
    padding-block: 18px 22px;
  }

  .footer-left,
  .footer-right {
    gap: 7px;
  }

  .footer-right {
    font-size: 11px;
  }
}

@media (width <= 360px) {
  .page-shell {
    padding-inline: 18px;
  }

  .brand {
    gap: 5px;
  }

  .brand-name {
    font-size: 14px;
  }

  .site-status {
    max-width: none;
    font-size: 11px;
  }

  .footer-left,
  .footer-right {
    gap: 5px;
  }
}

/* --------------------------------
   8. reduced motion
-------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .contact-trigger {
    transition: none;
  }
}

/* keyboard skip navigation */
.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  transform: translateY(-200%);
  padding: 12px 16px;
  background: var(--ivory);
  color: var(--deep-evergreen);
  font: 600 16px/1.4 var(--body);
  border-radius: 4px;
}

.skip-link:focus-visible {
  transform: translateY(0);
  outline: 3px solid var(--thistle);
  outline-offset: 3px;
}

/* field guide landing page */
.field-guide-landing {
  flex: 1;
  width: 100%;
  max-width: 720px;
  padding-block: 100px 112px;
}

/* construction status */
.construction-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  color: var(--thistle);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.construction-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--clay-light);
}

/* field guide index */

.field-guide-shell {
  max-width: none;
  background: var(--deep-evergreen);
}

.field-guide-header-band {
  position: relative;
  padding-bottom: 32px;
  background: var(--forest);
}

.field-guide-header-band::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0 calc(-1 * var(--page-gutter));
  background: var(--forest);
}

.field-guide-header-band > * {
  position: relative;
  z-index: 1;
}

/* temporary: hide Field Guide footer during visual refinement */
.field-guide-shell .site-footer {
  display: none;
}

.field-guide-index {
  flex: 1;
  width: 100%;
  padding-block: 0 112px;
}

.index-intro {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  align-items: center;
  gap: 40px;
  padding-bottom: 32px;
  column-gap: 73px;
  padding-top: 40px;
}

.index-intro h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(36px, 3.2vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.index-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 40px;
  padding-top: 32px;
}

.index-results {
  min-width: 0;
  padding-left: 32px;
  border-left: 1px solid var(--rule);
}

.domain-navigation h2 {
  margin: 0 0 40px;
  color: var(--thistle);
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 400;
  text-transform: uppercase;
}

.domain-navigation ul {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* mobile domain navigation: hidden on desktop */
.domain-navigation-disclosure {
  display: none;
}

.domain-item {
  display: block;
  padding: 8px 12px;
  border-left: 3px solid transparent;
  color: var(--ivory);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition:
    background-color 150ms ease,
    color 150ms ease;
}

.domain-item.is-unavailable {
  color: var(--sage);
}

.domain-item:hover {
  background: var(--forest);
  color: var(--thistle);
}

.domain-item:focus-visible {
  outline: 2px solid var(--thistle);
  outline-offset: 3px;
}

.domain-item.is-selected {
  border-left-color: var(--ivory);
  background: var(--forest);
  color: var(--ivory);
}

.results-toolbar {
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
  min-height: 54px;
  padding-top: 0;
  padding-bottom: 16px;
}

.sort-label {
  color: var(--thistle);
  font-family: var(--mono);
  font-size: 14px;
}

.results-list {
  padding-top: 24px;
}

/* field guide index — concept rows */

.concept-row[hidden] {
  display: none;
}

.concept-row {
  display: grid;
  grid-template-columns:
    minmax(220px, 0.9fr)
    minmax(0, 1.4fr)
    24px;
  align-items: start;
  gap: 24px;
  padding: 16px 0 48px;
}

.concept-details {
  min-width: 0;
}

.concept-details h3 {
  margin: 0 0 8px;
  color: var(--ivory);
  font-family: var(--display);
  font-size: clamp(20px, 2vw, 24px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.concept-link {
  color: inherit;
  text-decoration: none;
}

.concept-link:hover {
  color: var(--thistle);
}

.concept-types {
  margin: 0;
  color: var(--thistle);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.4;
  text-transform: uppercase;
}

.concept-summary {
  margin: 0;
  color: var(--thistle);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.5;
}

.concept-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  min-height: 32px;
  color: var(--ivory);
  font-size: 20px;
  line-height: 1;
  text-decoration: none;
}

.concept-arrow:hover {
  color: var(--thistle);
}

@media (width <= 900px) {
  .concept-row {
    grid-template-columns: minmax(0, 1fr) 24px;
    gap: 12px 16px;
  }

  .concept-details {
    grid-column: 1;
  }

  .concept-summary {
    grid-column: 1;
    grid-row: 2;
  }

  .concept-arrow {
    grid-column: 2;
    grid-row: 1 / 3;
    align-self: center;
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

@media (width <= 760px) {
  .index-intro,
  .index-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .index-intro {
    padding-top: 48px;
  }

  .field-guide-header-band {
    padding-bottom: 32px;
  }

  .field-guide-index {
    padding-block: 48px 80px;
  }

  .domain-navigation h2 {
    margin-bottom: 16px;
  }

  .domain-navigation ul {
    gap: 4px;
  }

  .results-toolbar {
    justify-content: flex-start;
  }

  .index-results {
    padding-left: 0;
    border-left: none;
  }

  /* mobile domain navigation */
  .domain-navigation-desktop {
    display: none;
  }

  .domain-navigation-disclosure {
    display: block;
    border: 1px solid var(--rule);
    border-radius: 4px;
  }

  .domain-navigation-disclosure > summary {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    cursor: pointer;
    list-style: none;
  }

  .domain-navigation-disclosure > summary::-webkit-details-marker {
    display: none;
  }

  .domain-navigation-disclosure > summary:focus-visible {
    outline: 2px solid var(--thistle);
    outline-offset: 4px;
  }

  .domain-disclosure-label {
    font-family: var(--mono);
    font-size: 14px;
    letter-spacing: 0.12em;
    color: var(--thistle);
  }

  .domain-disclosure-current {
    margin-left: auto;
    font-size: 14px;
    color: var(--ivory);
    text-align: right;
  }

  .domain-disclosure-chevron {
    flex: 0 0 auto;
    width: 8px;
    height: 8px;
    border-right: 1px solid currentcolor;
    border-bottom: 1px solid currentcolor;
    transform: translateY(-2px) rotate(45deg);
    transition: transform 200ms ease;
  }

  .domain-navigation-disclosure[open] .domain-disclosure-chevron {
    transform: translateY(2px) rotate(225deg);
  }

  @media (prefers-reduced-motion: reduce) {
    .domain-disclosure-chevron {
      transition: none;
    }
  }

  .domain-navigation-disclosure::details-content {
    block-size: 0;
    overflow: hidden;
    transition:
      block-size 240ms ease,
      content-visibility 240ms allow-discrete;
  }

  .domain-navigation-disclosure[open]::details-content {
    block-size: auto;
  }

  .domain-navigation-disclosure > ul {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin: 0;
    padding: 0 16px 16px;
    list-style: none;
  }

  @media (prefers-reduced-motion: reduce) {
    .domain-navigation-disclosure::details-content {
      transition: none;
    }
  }
}