/* ============================================================
   VoxFauna — an open corpus for animal communication
   Palette derives from the subject: recording-log paper,
   a dark instrument panel, amber for energy that was captured,
   teal for context that was thrown away.
   ============================================================ */

:root {
  --paper:      #EFF1EC;
  --paper-2:    #E5E9E2;
  --rule:       #CBD1C8;
  --ink:        #14181A;
  --ink-2:      #4A5459;
  --ink-3:      #7C8683;
  --panel:      #0E1214;
  --panel-2:    #1B2124;
  --signal:     #E0A22B;  /* energy: the thing everyone records */
  --context:    #3E9187;  /* the thing nobody records */
  --paper-on-dark: #DDE3DC;

  --display: "Spectral", Georgia, serif;
  --body:    "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;

  --gutter: clamp(1.25rem, 5vw, 4.5rem);
  --measure: 62ch;
  --max: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem var(--gutter);
  border-bottom: 1px solid var(--rule);
  flex-wrap: wrap;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: .01em;
  text-decoration: none;
}
.wordmark-logo {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 8px;
}
.topnav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  row-gap: .6rem;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.topnav a { text-decoration: none; padding-bottom: 2px; border-bottom: 1px solid transparent; white-space: nowrap; }
.topnav a:hover, .topnav a:focus-visible { border-bottom-color: var(--signal); color: var(--ink); }

/* ---------- shared type ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 1.6rem;
}
.eyebrow--light { color: #7E8C88; }

.h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  line-height: 1.14;
  letter-spacing: -.012em;
  margin: 0 0 1.4rem;
  max-width: 22ch;
}
.h2--light { color: var(--paper-on-dark); }

.section-intro {
  max-width: var(--measure);
  color: var(--ink-2);
  margin: 0 0 3rem;
}
.section--dark .section-intro { color: #98A5A1; }
.section-intro--wide { max-width: 58ch; }

/* ---------- hero ---------- */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 9vw, 7rem) var(--gutter) clamp(3rem, 7vw, 5rem);
}
.lede {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.3rem, 6.4vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin: 0 0 clamp(2.5rem, 5vw, 3.75rem);
}
.lede em {
  font-style: italic;
  color: var(--ink);
  position: relative;
}
.lede em::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: .1em;
  height: .09em;
  background: var(--signal);
  opacity: .55;
}

/* ---------- SIGNATURE: the scope ---------- */
.scope { margin: 0 0 clamp(2.5rem, 5vw, 3.5rem); }

.scope-frame {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--panel-2);
  aspect-ratio: 1600 / 420;
  overflow: hidden;
}
.scope-frame canvas {
  display: block;
  width: 100%;
  height: 100%;
  position: relative;
  z-index: 1;
}
/* visible if JS is unavailable */
.scope-fallback {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(62,145,135,.10) 0 33%, rgba(224,162,43,.16) 33% 45%, rgba(62,145,135,.10) 45% 100%);
}

.scope-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: 33% 12% 55%;
  pointer-events: none;
}
.band {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: .85rem .9rem;
  gap: .15rem;
}
.band--before, .band--after { background: rgba(14,18,20,.62); }
.band--signal  { border-left: 1px solid var(--signal); border-right: 1px solid var(--signal); }

.band-tag {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--context);
}
.band-tag--signal { color: var(--signal); }
.band-note {
  font-family: var(--body);
  font-size: .78rem;
  color: #6B7873;
  font-style: italic;
}
.band-note--signal { color: #C9B183; }

/* reveal choreography: the recording sweeps in, then the context dims out */
.js .band--before, .js .band--after { opacity: 0; }
.js .band--before, .js .band--after, .js .band--signal { transition: opacity .9s ease; }
.js .scope.is-on .band--before,
.js .scope.is-on .band--after { opacity: 1; }

.scope-caption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: .7rem;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--ink-3);
}
.cap-c { font-family: var(--body); font-style: italic; letter-spacing: 0; text-align: center; }

/* ---------- hero body ---------- */
.hero-body { max-width: var(--measure); }
.hero-body p { margin: 0 0 1.1rem; color: var(--ink-2); }
.hero-body strong { color: var(--ink); font-weight: 500; }
.hero-body em { font-style: italic; }

.hero-cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem !important; }
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .06em;
  text-decoration: none;
  padding: .72rem 1.15rem;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  transition: background .18s ease, color .18s ease;
}
.btn:hover, .btn:focus-visible { background: var(--signal); border-color: var(--signal); color: var(--ink); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover, .btn--ghost:focus-visible { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ---------- sections ---------- */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 6.5rem) var(--gutter);
  border-top: 1px solid var(--rule);
}
.section--dark {
  max-width: none;
  background: var(--panel);
  color: var(--paper-on-dark);
  border-top: none;
}
.section--dark > * { max-width: var(--max); margin-left: auto; margin-right: auto; }

/* ---------- the gap ---------- */
.grid3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}
.card { border-top: 2px solid var(--ink); padding-top: 1.1rem; }
.stat {
  font-family: var(--display);
  font-size: 2.6rem;
  line-height: 1;
  margin: 0 0 .9rem;
  color: var(--signal);
  letter-spacing: -.02em;
}
.stat sup { font-size: .5em; top: -.6em; position: relative; }
.card-h {
  font-family: var(--mono);
  font-size: .74rem;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin: 0 0 .8rem;
  color: var(--ink);
}
.card-p { margin: 0; font-size: .95rem; color: var(--ink-2); }
.card-p em { font-style: italic; color: var(--ink); }

.pull {
  margin: clamp(3rem, 6vw, 4.5rem) 0 0;
  padding-left: 1.6rem;
  border-left: 2px solid var(--context);
  max-width: 46ch;
}
.pull p {
  font-family: var(--display);
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  line-height: 1.4;
  font-style: italic;
  margin: 0 0 .7rem;
}
.pull cite {
  font-family: var(--mono);
  font-style: normal;
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--ink-3);
}

/* ---------- schema ---------- */
.abc {
  list-style: none;
  padding: 0;
  margin: 0 auto 3rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 2rem;
}
.abc-step { border-top: 1px solid #2C3437; padding-top: 1rem; }
.abc-step--signal { border-top-color: var(--signal); }
.abc-k {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--context);
  margin: 0 0 .7rem;
}
.abc-k--signal { color: var(--signal); }
.abc-v { margin: 0; font-size: .93rem; color: #98A5A1; }
.abc-v em { color: var(--paper-on-dark); font-style: italic; }

.code {
  background: #080B0C;
  border: 1px solid #232B2E;
  padding: 1.5rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: .78rem;
  line-height: 1.75;
  color: #B9C4C0;
  margin: 0 auto;
}
.code code { font-family: inherit; }
.c-c { color: #5C6A6C; font-style: italic; }
.c-k { color: #7FB6AE; }
.c-s { color: var(--signal); }
.c-n { color: #C58BD6; }

.section-foot {
  max-width: var(--measure);
  margin: 2.5rem auto 0;
  font-size: .95rem;
  color: #98A5A1;
}
.section-foot strong { color: var(--paper-on-dark); font-weight: 500; }

/* ---------- what this is not ---------- */
.nots { list-style: none; padding: 0; margin: 0; max-width: 72ch; }
.nots li {
  display: flex;
  gap: 1.1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule);
}
.nots li:last-child { border-bottom: 1px solid var(--rule); }
.no, .yes {
  font-family: var(--mono);
  font-size: .9rem;
  line-height: 1.5;
  flex: 0 0 1.4rem;
}
.no  { color: var(--ink-3); }
.yes { color: var(--context); }
.nots h3 {
  font-family: var(--body);
  font-size: 1.02rem;
  font-weight: 500;
  margin: 0 0 .35rem;
}
.nots p { margin: 0; font-size: .93rem; color: var(--ink-2); }
.nots code {
  font-family: var(--mono);
  font-size: .84em;
  background: var(--paper-2);
  padding: .1em .35em;
}

/* ---------- contact ---------- */
.section--contact { padding-bottom: clamp(4rem, 9vw, 7rem); }
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(260px, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
  margin: 3rem 0 2.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--rule);
}
.mailto { margin: 0 0 1rem; }
.mailto a {
  font-family: var(--display);
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  text-decoration: none;
  border-bottom: 2px solid var(--signal);
  padding-bottom: .08em;
  letter-spacing: -.01em;
}
.mailto a:hover, .mailto a:focus-visible { background: var(--signal); }
.contact-note { margin: 0; font-size: .93rem; color: var(--ink-2); max-width: 46ch; }
.contact-inline-link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--signal);
  white-space: nowrap;
}
.contact-inline-link:hover, .contact-inline-link:focus-visible { background: var(--signal); }

.contact-secondary {
  border-left: 2px solid var(--rule);
  padding-left: 1.6rem;
}
.contact-secondary-k {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 .4rem;
}
.contact-secondary-v { margin: 0 0 1rem; font-size: .9rem; color: var(--ink-2); }
.vf-row { display: flex; gap: .6rem; }
.vf-row .vf-input { flex: 1 1 auto; min-width: 0; }
.vf-form.vf-form--inline .btn { margin-top: 0; white-space: nowrap; }

.byline { max-width: var(--measure); font-size: .88rem; color: var(--ink-3); margin: 0; }

@media (max-width: 720px) {
  .contact-grid { grid-template-columns: 1fr; }
  .contact-secondary { border-left: none; padding-left: 0; border-top: 1px solid var(--rule); padding-top: 1.6rem; }
}

/* ---------- subscribe ---------- */
.subscribe-hero { padding-bottom: 0; }
.subscribe-forms { border-top: none; padding-top: clamp(2rem, 5vw, 3rem); }
.grid2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}
.form-card { border-top: 2px solid var(--ink); padding-top: 1.1rem; }
.form-card-h {
  font-family: var(--display);
  font-size: 1.4rem;
  margin: .3rem 0 .6rem;
  color: var(--ink);
}
.form-card-p { margin: 0 0 1.5rem; font-size: .93rem; color: var(--ink-2); max-width: 42ch; }

.vf-form { display: flex; flex-direction: column; gap: .3rem; }
.vf-label {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: .7rem 0 .1rem;
}
.vf-label span { text-transform: none; letter-spacing: 0; }
.vf-input {
  font-family: var(--body);
  font-size: .95rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: .65rem .7rem;
  width: 100%;
}
.vf-input:focus-visible { outline: 2px solid var(--signal); outline-offset: 1px; }
.vf-textarea { resize: vertical; font-family: var(--body); }
select.vf-input {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  border-radius: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath fill='%237C8683' d='M0 1l6 6 6-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .75rem center;
  background-size: .65rem;
  padding-right: 2.2rem;
}
.vf-honeypot { display: none; }
.vf-form .btn { margin-top: 1.1rem; align-self: flex-start; border: none; cursor: pointer; }
.vf-status { min-height: 1.2em; font-size: .85rem; margin: .6rem 0 0; }
.vf-status--ok { color: var(--context); }
.vf-status--err { color: #B8543F; }

/* ---------- footer ---------- */
.foot {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.6rem var(--gutter);
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--ink-3);
}
.foot-links { display: flex; gap: 1.4rem; }
.foot a { text-decoration: none; border-bottom: 1px solid transparent; }
.foot a:hover, .foot a:focus-visible { border-bottom-color: var(--signal); color: var(--ink); }

/* ---------- a11y ---------- */
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

/* ---------- small screens ---------- */
@media (max-width: 640px) {
  .wordmark { font-size: 1.1rem; gap: .4rem; }
  .wordmark-logo { width: 32px; height: 32px; }
  .topnav { gap: 1rem; row-gap: .5rem; font-size: .68rem; }
  .scope-frame { aspect-ratio: 3 / 2; }
  .scope-overlay { grid-template-columns: 30% 16% 54%; }
  .band { padding: .6rem .55rem; }
  .band-note { display: none; }
  .cap-c { display: none; }
  .code { font-size: .68rem; padding: 1rem; }
}