:root {
  /* base palette (immutable color tokens) */
  --c-dark: #0a0a0a;
  --c-charcoal: #1a1816;
  --c-cream: #f4f0e8;
  --c-white: #fafaf7;
  --c-accent: #e0875a;
  --c-accent-hover: #f1a273;
  --c-accent-deep: #a55a2e;
  --c-accent-deep-hover: #c4683d;

  /* default scheme = dark (used by hero + close) */
  --bg: var(--c-dark);
  --bg-elev: #131313;
  --text: #f4f0e8;
  --muted: #8b8680;
  --accent: var(--c-accent);
  --accent-hover: var(--c-accent-hover);
  --on-accent: #0a0a0a;
  --hairline: rgba(244, 240, 232, 0.08);
  --hairline-strong: rgba(244, 240, 232, 0.18);
  --row-hover: rgba(244, 240, 232, 0.025);

  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --section-pad-y: 80px;
  --container-w: 1200px;
}

@media (min-width: 720px) {
  :root { --section-pad-y: 128px; }
}
@media (min-width: 1100px) {
  :root { --section-pad-y: 160px; }
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
@media (min-width: 720px) {
  body { font-size: 17px; }
}

a { color: var(--accent); text-decoration: none; transition: color 180ms ease; }
a:hover { color: var(--accent-hover); }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
.container.narrow { max-width: 720px; }

.section { padding: var(--section-pad-y) 0; }

/* Section color schemes.
   Each section overrides the cascading CSS variables for its own scheme,
   then sets an explicit background. The 96px gradient band at the top of
   each non-hero section creates a smooth transition from the previous
   section's color into this one's. */
.section-live {
  --bg: var(--c-cream);
  --bg-elev: #ece7dc;
  --text: #1a1816;
  --muted: #6e6862;
  --accent: var(--c-accent-deep);
  --accent-hover: var(--c-accent-deep-hover);
  --on-accent: #fafaf7;
  --hairline: rgba(26, 24, 22, 0.10);
  --hairline-strong: rgba(26, 24, 22, 0.22);
  --row-hover: rgba(26, 24, 22, 0.03);
  color: var(--text);
  background-color: var(--c-cream);
}
.section-record {
  --bg: var(--c-white);
  --bg-elev: #f0ebe0;
  --text: #1a1816;
  --muted: #6e6862;
  --accent: var(--c-accent-deep);
  --accent-hover: var(--c-accent-deep-hover);
  --on-accent: #fafaf7;
  --hairline: rgba(26, 24, 22, 0.08);
  --hairline-strong: rgba(26, 24, 22, 0.20);
  --row-hover: rgba(26, 24, 22, 0.025);
  color: var(--text);
  background-color: var(--c-white);
}
.section-origins {
  --bg: var(--c-cream);
  --bg-elev: #ece7dc;
  --text: #1a1816;
  --muted: #6e6862;
  --accent: var(--c-accent-deep);
  --accent-hover: var(--c-accent-deep-hover);
  --on-accent: #fafaf7;
  --hairline: rgba(26, 24, 22, 0.10);
  --hairline-strong: rgba(26, 24, 22, 0.22);
  color: var(--text);
  background-color: var(--c-cream);
  text-align: center;
}
.section-close {
  background-color: var(--c-dark);
}

.section-headline {
  font-family: var(--serif);
  font-weight: 500;
  font-variation-settings: "opsz" 96;
  font-size: clamp(40px, 6.4vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  margin: 0 0 20px;
}

/* HERO */
.section-hero {
  height: 100vh;
  height: 100dvh;
  position: relative;
  overflow: hidden;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  background: #000;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10,10,10,0.35) 0%, rgba(10,10,10,0.05) 30%, rgba(10,10,10,0.35) 70%, rgba(10,10,10,0.92) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
  max-width: 1100px;
}
.hero-headline {
  font-family: var(--serif);
  font-weight: 500;
  font-variation-settings: "opsz" 144;
  margin: 0 0 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(20px, 2.4vw, 32px);
}
.hero-logo {
  display: block;
  width: clamp(280px, 58vw, 760px);
  height: auto;
  max-width: 100%;
}
.hero-headline--main {
  font-size: clamp(54px, 12vw, 132px);
  line-height: 0.96;
  letter-spacing: -0.038em;
}
.hero-headline--small {
  font-size: clamp(18px, 2.6vw, 28px);
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 30;
  letter-spacing: -0.012em;
  color: rgba(244, 240, 232, 0.86);
}
.hero-buttons {
  display: flex;
  gap: 22px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--text);
  cursor: pointer;
  transition: background 200ms ease, border-color 200ms ease, color 200ms ease, opacity 200ms ease;
  background: transparent;
  text-decoration: none;
  line-height: 1;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  padding: 13px 24px;
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost {
  border-color: transparent;
  color: var(--text);
  padding: 13px 8px;
}
.btn-ghost:hover { color: var(--accent); }
.btn-ghost span { transition: transform 220ms ease; display: inline-block; }
.btn-ghost:hover span { transform: translateX(3px); }
.btn-outline {
  border-color: var(--hairline-strong);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-yt {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 500;
}
.btn-yt:hover { background: var(--accent-hover); color: var(--on-accent); transform: translateY(-1px); }
.btn-yt:active { transform: translateY(0); }

/* LIVE */
.embed-wrap {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.embed-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.status-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px auto 0;
  max-width: 1200px;
  padding: 16px 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  font-size: 13px;
  letter-spacing: 0.01em;
  color: var(--muted);
  font-feature-settings: "ss01";
}
.status-text { color: var(--text); }
.status-strip.idle .status-text,
.status-strip.off  .status-text { color: var(--muted); }
.status-strip.live .status-text { color: var(--text); font-weight: 500; }
.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--muted);
  flex-shrink: 0;
  position: relative;
}
.status-strip.live .status-dot {
  background: #2dd286;
  animation: pulse 1.8s ease-in-out infinite;
}
.status-strip.idle .status-dot { background: #d6d3cc; }
.status-strip.off  .status-dot { background: #4a4744; }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(45, 210, 134, 0.45); }
  50%      { box-shadow: 0 0 0 7px rgba(45, 210, 134, 0); }
}
.caption {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 36;
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.4;
  letter-spacing: -0.012em;
  color: var(--text);
  opacity: 0.86;
  max-width: 820px;
  margin: 64px auto 0;
  text-align: center;
}

/* RECORD */
.datestamp {
  margin: 0 0 36px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.02em;
}

/* FILTER BAR */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0 0 56px;
  flex-wrap: wrap;
}
.filter-pills {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--row-hover);
  padding: 4px;
  border-radius: 999px;
}
.filter-btn {
  background: transparent;
  border: 0;
  padding: 8px 16px;
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background 200ms ease, color 200ms ease;
  white-space: nowrap;
}
.filter-btn:hover { color: var(--text); }
.filter-btn.is-active {
  background: var(--text);
  color: var(--bg);
}
.filter-spacer { flex: 1 1 0; }
.filter-day-wrap { position: relative; display: inline-flex; align-items: center; }
.filter-day-picker {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 1px solid var(--hairline-strong);
  padding: 8px 32px 8px 14px;
  border-radius: 999px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: border-color 180ms ease, color 180ms ease;
}
.filter-day-picker:hover { border-color: var(--accent); color: var(--accent); }
.filter-day-picker:focus-visible { border-color: var(--accent); }
.filter-day-wrap::after {
  content: "▾";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
  color: var(--muted);
  pointer-events: none;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* DATA ACTIONS — CSV/JSON download */
.data-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 0 0 80px;
}
.data-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  padding: 10px 18px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}
.data-action:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}
.data-action__icon {
  font-size: 14px;
  line-height: 1;
  display: inline-flex;
  width: 16px;
  height: 16px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--row-hover);
  font-weight: 600;
}

/* METHODS PANEL — always visible */
.methods-panel {
  border-top: 1px solid var(--hairline);
  padding: 32px 0 0;
  margin: 0;
}
.methods-eyebrow {
  margin: 0 0 24px;
}
.methods-body {
  max-width: 720px;
}
.methods-body p {
  font-family: var(--serif);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.65;
  color: var(--text);
  opacity: 0.86;
  margin: 0 0 18px;
}
.methods-body p em {
  font-style: italic;
}
.methods-meta {
  font-family: var(--sans) !important;
  font-size: 12px !important;
  letter-spacing: 0.01em;
  color: var(--muted) !important;
  opacity: 1 !important;
  margin-top: 24px !important;
  padding-top: 16px;
  border-top: 1px solid var(--hairline);
}
.validation-card {
  margin: 32px 0 0;
  padding: 28px 0 0;
  border-top: 1px solid var(--hairline);
  font-family: var(--sans);
}
.validation-card[hidden] { display: none; }
.validation-card .validation-eyebrow { margin: 0 0 20px; }
.validation-headline {
  display: flex;
  align-items: baseline;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.validation-pct {
  font-family: var(--serif);
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
}
.validation-pct-sub {
  font-size: 14px;
  line-height: 1.55;
  color: var(--muted);
  max-width: 420px;
}
.validation-pct-sub strong {
  color: var(--text);
  font-weight: 500;
}
.validation-buckets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}
.validation-bucket {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--row-hover);
  border: 1px solid var(--hairline);
  border-radius: 8px;
}
.validation-bucket-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.validation-bucket-value {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--text);
  line-height: 1;
}
.validation-bucket-sub {
  font-size: 12px;
  color: var(--muted);
}
.chart-card { margin-bottom: 64px; }
.chart-wrap {
  position: relative;
  height: 420px;
  width: 100%;
  margin-bottom: 12px;
}
@media (max-width: 720px) {
  .chart-wrap { height: 320px; }
}
.chart-subhead {
  color: var(--muted);
  font-size: 14px;
  margin: 12px 0 0;
}

/* TABLE */
.table-card {
  margin-bottom: 64px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.visit-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  min-width: 640px;
}
.visit-table th, .visit-table td {
  padding: 18px 16px;
  text-align: left;
  border-bottom: 1px solid var(--hairline);
  white-space: nowrap;
}
.visit-table thead tr { border-bottom: 1px solid var(--hairline-strong); }
.visit-table th {
  color: var(--muted);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-bottom: 14px;
}
.visit-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.visit-table tbody tr { transition: background 180ms ease; }
.visit-table tbody tr:hover { background: var(--row-hover); }
.species-cell { display: flex; align-items: baseline; gap: 12px; }
.species-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  flex-shrink: 0;
  position: relative;
  top: -1px;
}
.species-name { font-weight: 500; letter-spacing: -0.005em; }
.species-name-link {
  color: var(--text);
  font-weight: 500;
  letter-spacing: -0.005em;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
  position: relative;
}
.species-name-link::after {
  content: " ↗";
  font-size: 0.78em;
  vertical-align: 0.2em;
  margin-left: 2px;
  opacity: 0;
  color: var(--accent);
  transition: opacity 180ms ease, transform 180ms ease;
  display: inline-block;
}
.species-name-link:hover { color: var(--accent); border-bottom-color: var(--accent); }
.species-name-link:hover::after { opacity: 0.85; transform: translate(1px, -1px); }
.species-sci {
  font-style: italic;
  color: var(--muted);
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 0;
}

.origin-prose {
  text-align: left;
  max-width: 660px;
  margin: 0 auto;
}
.origin-prose p {
  font-family: var(--serif);
  font-weight: 400;
  font-variation-settings: "opsz" 24;
  font-size: clamp(18px, 1.6vw, 21px);
  line-height: 1.7;
  letter-spacing: -0.005em;
  color: var(--text);
  margin: 0 0 28px;
}
.origin-prose .origin-lede {
  font-size: clamp(22px, 2vw, 28px);
  line-height: 1.45;
  font-variation-settings: "opsz" 36;
  letter-spacing: -0.014em;
  font-weight: 400;
  margin-bottom: 40px;
}
.origin-prose em {
  font-style: italic;
}
.origin-prose .origin-emph {
  font-style: italic;
  font-variation-settings: "opsz" 30;
}
.origin-note {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 36;
  font-size: clamp(20px, 1.7vw, 26px);
  line-height: 1.5;
  letter-spacing: -0.008em;
  color: var(--text);
  max-width: 680px;
  margin: 0 auto;
}
.eyebrow {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 48px;
}
.origin-byline {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--muted);
  margin: 64px 0 0;
  letter-spacing: 0;
}

/* CLOSE */
.section-close { text-align: center; }
.section-close .btn-yt { margin: 8px 0 56px; }
.email-prompt { color: var(--muted); font-size: 15px; margin: 0 0 18px; }
.email-form {
  margin: 0 auto;
  max-width: 420px;
}
.email-field {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--hairline-strong);
  padding: 8px 0;
  transition: border-color 220ms ease;
}
.email-field:focus-within { border-bottom-color: var(--accent); }
.email-form input[type="email"] {
  flex: 1;
  background: transparent;
  border: 0;
  padding: 8px 0;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  outline: none;
  letter-spacing: -0.005em;
  -webkit-text-fill-color: var(--text);
}
.email-form input[type="email"]::placeholder { color: var(--muted); }
.email-form input[type="email"]:-webkit-autofill {
  -webkit-text-fill-color: var(--text);
  -webkit-box-shadow: 0 0 0 100px var(--bg) inset;
  caret-color: var(--text);
}
.email-submit {
  background: transparent;
  border: 0;
  color: var(--muted);
  font-size: 18px;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 200ms ease, background 200ms ease, transform 200ms ease;
}
.email-submit:hover { color: var(--accent); }
.email-submit:focus-visible { outline: 1px solid var(--accent); outline-offset: 2px; }
.email-field:focus-within .email-submit { color: var(--accent); }
.form-error {
  color: var(--muted);
  font-size: 13px;
  margin: 12px 0 0;
}
.form-success {
  color: var(--text);
  font-size: 16px;
  margin: 12px 0 24px;
}
.contact-line {
  margin: 80px 0 64px;
  color: var(--muted);
  font-size: 14px;
}
.hairline {
  border: 0;
  border-top: 1px solid var(--hairline);
  margin: 0 0 32px;
}
.site-footer p {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 13px;
  color: var(--muted);
  margin: 4px 0;
  letter-spacing: -0.005em;
}

/* FADE-IN */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1100ms var(--ease-out), transform 1100ms var(--ease-out);
}
.fade-in.is-visible { opacity: 1; transform: none; }
.fade-in.is-visible > * { animation: rise 900ms var(--ease-out) both; }
.fade-in.is-visible > *:nth-child(1) { animation-delay: 60ms; }
.fade-in.is-visible > *:nth-child(2) { animation-delay: 140ms; }
.fade-in.is-visible > *:nth-child(3) { animation-delay: 220ms; }
.fade-in.is-visible > *:nth-child(4) { animation-delay: 300ms; }
.fade-in.is-visible > *:nth-child(5) { animation-delay: 380ms; }
.fade-in.is-visible > *:nth-child(6) { animation-delay: 460ms; }
@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

/* Focus rings — visible only for keyboard users */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
.btn:focus-visible {
  outline-offset: 4px;
  border-radius: 999px;
}
.email-field:focus-within {
  outline: 0;
}
.email-form input[type="email"]:focus-visible {
  outline: 0;
}

/* Selection */
::selection { background: var(--accent); color: #0a0a0a; }

@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; transition: none; }
  .status-strip.live .status-dot { animation: none; }
  html { scroll-behavior: auto; }
}