/* ============================================================
   NY Breeding Bird Atlas — Design System
   Field-journal editorial, data-science precision
   ============================================================ */

:root {
  /* Paper & ink */
  --paper: #F5EFE1;
  --paper-warm: #EFE7D4;
  --paper-deep: #E6DCC6;
  --ink: #1B1F19;
  --ink-soft: #2D342A;
  --ink-muted: #595A4C;

  /* Bird palette */
  --spruce: #2D4A3E;       /* deep forest, primary accent */
  --spruce-dark: #1B3028;
  --tanager: #B8442F;      /* scarlet tanager rust */
  --tanager-deep: #8A2A1D;
  --catbird: #6C7076;      /* slate */
  --goldfinch: #D6A84B;    /* sun-faded goldfinch */
  --sky: #4D6B7A;          /* muted blue jay */
  --rule: #2A3129;

  /* Type */
  --ff-display: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --ff-body: 'Instrument Sans', 'Inter Tight', system-ui, sans-serif;
  --ff-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;

  /* Measure */
  --measure: 68ch;
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
  --page-max: 1400px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ff-body);
  font-size: 17px;
  line-height: 1.55;
  font-feature-settings: 'ss01', 'cv11';
  font-variant-numeric: oldstyle-nums proportional-nums;
  position: relative;
  overflow-x: hidden;
}

/* Paper grain overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 500;
  background-image:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.08 0 0 0 0 0.05 0 0 0 0.5 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.25'/></svg>");
  opacity: 0.35;
  mix-blend-mode: multiply;
}

img, svg { max-width: 100%; display: block; }

a {
  color: inherit;
  text-decoration: none;
}

button { font: inherit; cursor: pointer; }

/* ---------- Type ---------- */
h1, h2, h3, h4, h5 {
  font-family: var(--ff-display);
  font-weight: 420;
  font-variation-settings: 'opsz' 144, 'SOFT' 0, 'WONK' 0;
  letter-spacing: -0.015em;
  line-height: 1.02;
  margin: 0;
  color: var(--ink);
}

.display-1 {
  font-size: clamp(3.5rem, 10vw, 9.5rem);
  font-variation-settings: 'opsz' 144, 'SOFT' 20, 'WONK' 1;
  letter-spacing: -0.04em;
  line-height: 0.93;
}

.display-2 {
  font-size: clamp(2.75rem, 6vw, 5rem);
  line-height: 0.98;
}

.eyebrow {
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.latin {
  font-family: var(--ff-display);
  font-style: italic;
  font-variation-settings: 'opsz' 14, 'SOFT' 0;
  color: var(--ink-muted);
}

.mono { font-family: var(--ff-mono); font-size: 0.85em; }

/* ---------- Layout ---------- */
.page {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section {
  padding: clamp(4rem, 8vw, 7rem) 0;
  position: relative;
}

/* Rules */
.hairline {
  border: 0;
  height: 1px;
  background: var(--rule);
  opacity: 0.3;
}

.thickline {
  border: 0;
  height: 3px;
  background: var(--ink);
}

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
  border-bottom: 1px solid color-mix(in srgb, var(--ink) 14%, transparent);
}

.topbar__inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0.9rem var(--gutter);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--ff-display);
  font-size: 1.1rem;
  font-weight: 450;
  line-height: 1;
  color: var(--ink);
}

.wordmark__crest {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.wordmark__stack {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
}

.wordmark__title { letter-spacing: -0.01em; }
.wordmark__sub {
  font-family: var(--ff-mono);
  font-size: 9.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.nav {
  display: flex;
  justify-content: center;
  gap: clamp(0.9rem, 2vw, 1.9rem);
}

.nav a {
  font-family: var(--ff-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: all 0.25s ease;
}

.nav a:hover,
.nav a.active {
  color: var(--tanager);
  border-bottom-color: var(--tanager);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
}

.topbar__search {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid color-mix(in srgb, var(--ink) 22%, transparent);
  border-radius: 2px;
  background: color-mix(in srgb, var(--paper) 60%, white);
  color: var(--ink-muted);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  transition: all 0.25s ease;
}
.topbar__search:hover { border-color: var(--ink); color: var(--ink); }
.topbar__search kbd {
  font-family: var(--ff-mono);
  font-size: 10px;
  padding: 1px 5px;
  border: 1px solid currentColor;
  border-radius: 2px;
  opacity: 0.6;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  padding-top: clamp(2rem, 6vw, 4rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: clamp(2rem, 4vw, 4rem);
    align-items: end;
  }
}

.hero__head {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
}

.hero__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--ink-muted);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.hero__meta::before {
  content: '';
  display: block;
  width: 44px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.hero__title {
  font-size: clamp(3.2rem, 9vw, 8.2rem);
  font-variation-settings: 'opsz' 144, 'SOFT' 30, 'WONK' 1;
  letter-spacing: -0.045em;
  line-height: 0.9;
  color: var(--ink);
}

.hero__title em {
  font-style: italic;
  font-variation-settings: 'opsz' 144, 'SOFT' 100, 'WONK' 1;
  color: var(--tanager);
}

.hero__lede {
  font-family: var(--ff-display);
  font-size: clamp(1.1rem, 1.4vw, 1.35rem);
  line-height: 1.45;
  max-width: 42ch;
  color: var(--ink-soft);
  font-variation-settings: 'opsz' 24, 'SOFT' 50;
}

.hero__cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 0.5rem;
}

.hero__photo {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 1px;
  background: var(--spruce-dark);
}

.hero__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.02);
}

.hero__photo-caption {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  right: 1rem;
  color: var(--paper);
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
  text-shadow: 0 1px 8px rgba(0,0,0,0.5);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.5rem;
  border-radius: 2px;
  font-family: var(--ff-body);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: none;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  transition: all 0.25s ease;
}

.btn:hover {
  background: var(--tanager);
  border-color: var(--tanager);
  color: var(--paper);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
}
.btn--ghost:hover {
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-1px);
}

.btn--pill {
  border-radius: 999px;
}

.btn .arrow { transition: transform 0.25s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ============================================================
   STAT BAR
   ============================================================ */
.stats {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  padding: 1.25rem 0;
  margin-top: 2rem;
}

.stats__row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 700px) {
  .stats__row { grid-template-columns: repeat(4, 1fr); }
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0 0.5rem;
  border-left: 1px solid color-mix(in srgb, var(--ink) 20%, transparent);
}
.stat:first-child { border-left: 0; padding-left: 0; }

.stat__num {
  font-family: var(--ff-display);
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  line-height: 1;
  font-variation-settings: 'opsz' 144, 'SOFT' 20;
  letter-spacing: -0.025em;
  color: var(--ink);
  font-feature-settings: 'tnum';
}

.stat__num sup {
  font-size: 0.5em;
  font-feature-settings: 'sups';
  color: var(--tanager);
  margin-left: 0.1em;
  vertical-align: top;
}

.stat__label {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* ============================================================
   TIMELINE — 3 Atlases across 40 years
   ============================================================ */
.timeline {
  padding-top: clamp(3rem, 6vw, 5rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  position: relative;
}

.timeline__header {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-bottom: 3rem;
}

@media (min-width: 900px) {
  .timeline__header {
    grid-template-columns: 1fr 1fr;
    align-items: end;
    gap: 3rem;
  }
}

.timeline__title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-variation-settings: 'opsz' 144, 'SOFT' 20;
  letter-spacing: -0.035em;
  line-height: 0.95;
}

.timeline__title em {
  font-style: italic;
  color: var(--spruce);
}

.timeline__blurb {
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 52ch;
}

.timeline__track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2.5rem;
}

@media (max-width: 800px) {
  .timeline__track { grid-template-columns: 1fr; gap: 2rem; }
}

/* The scale line */
.timeline__scale {
  grid-column: 1 / -1;
  height: 1px;
  background: var(--ink);
  position: relative;
  margin-bottom: 1.75rem;
}

.timeline__scale::before,
.timeline__scale::after {
  content: '';
  position: absolute;
  width: 1px;
  height: 10px;
  background: var(--ink);
}
.timeline__scale::before { left: 0; top: -4px; }
.timeline__scale::after { right: 0; top: -4px; }

.atlas-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding: 1.5rem 1.25rem;
  border: 1px solid color-mix(in srgb, var(--ink) 18%, transparent);
  background: var(--paper-warm);
  position: relative;
  transition: all 0.3s ease;
}

.atlas-card:hover {
  background: var(--paper-deep);
  transform: translateY(-3px);
}

.atlas-card__num {
  font-family: var(--ff-display);
  font-size: 0.95rem;
  font-variation-settings: 'opsz' 14, 'SOFT' 20;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--tanager);
}

.atlas-card__years {
  font-family: var(--ff-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-variation-settings: 'opsz' 144, 'SOFT' 30;
  letter-spacing: -0.03em;
  line-height: 0.95;
  color: var(--ink);
  font-feature-settings: 'tnum';
}

.atlas-card__editors {
  font-family: var(--ff-display);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-muted);
  font-variation-settings: 'opsz' 14, 'SOFT' 0;
}

.atlas-card__meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
  padding-top: 1rem;
  margin-top: auto;
  border-top: 1px solid color-mix(in srgb, var(--ink) 14%, transparent);
}

.atlas-card__meta dt {
  font-family: var(--ff-mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 3px;
}
.atlas-card__meta dd {
  font-family: var(--ff-body);
  font-size: 15px;
  font-weight: 500;
  margin: 0;
  font-feature-settings: 'tnum';
}

.atlas-card--live {
  background: var(--spruce);
  color: var(--paper);
  border-color: var(--spruce);
}
.atlas-card--live:hover { background: var(--spruce-dark); }
.atlas-card--live .atlas-card__years,
.atlas-card--live .atlas-card__editors,
.atlas-card--live .atlas-card__meta dd { color: var(--paper); }
.atlas-card--live .atlas-card__meta dt,
.atlas-card--live .atlas-card__editors { color: color-mix(in srgb, var(--paper) 75%, transparent); }
.atlas-card--live .atlas-card__meta { border-top-color: color-mix(in srgb, var(--paper) 20%, transparent); }
.atlas-card--live .atlas-card__num { color: var(--goldfinch); }

/* ============================================================
   FEATURED SPECIES — editorial grid
   ============================================================ */
.featured {
  padding-top: clamp(4rem, 6vw, 6rem);
  padding-bottom: clamp(4rem, 6vw, 6rem);
  border-top: 1px solid var(--ink);
}

.featured__header {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-bottom: 3rem;
}

@media (min-width: 900px) {
  .featured__header {
    grid-template-columns: 1fr 1fr;
    align-items: end;
  }
}

.featured__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.25rem;
}

.species-card {
  grid-column: span 12;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  cursor: pointer;
  transition: transform 0.35s ease;
}

@media (min-width: 600px) {
  .species-card { grid-column: span 6; }
}
@media (min-width: 960px) {
  .species-card { grid-column: span 3; }
  .species-card--large { grid-column: span 6; grid-row: span 2; }
}

.species-card:hover { transform: translateY(-4px); }

.species-card__frame {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--paper-deep);
}

.species-card--large .species-card__frame {
  aspect-ratio: 1 / 1.1;
}

.species-card__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), filter 0.4s ease;
  filter: saturate(0.9) contrast(1.04);
}
.species-card:hover .species-card__frame img {
  transform: scale(1.05);
  filter: saturate(1) contrast(1.05);
}

.species-card__tag {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.3rem 0.55rem;
  background: var(--paper);
  font-family: var(--ff-mono);
  font-size: 9.5px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.species-card__tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--spruce);
}
.species-card__tag--declining::before { background: var(--tanager); }
.species-card__tag--expanding::before { background: var(--goldfinch); }

.species-card__info {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--ink);
}

.species-card__name {
  font-family: var(--ff-display);
  font-size: clamp(1.1rem, 1.4vw, 1.35rem);
  line-height: 1.1;
  font-variation-settings: 'opsz' 24, 'SOFT' 30;
  letter-spacing: -0.01em;
}

.species-card__latin {
  font-style: italic;
  font-size: 12.5px;
  color: var(--ink-muted);
  font-variation-settings: 'opsz' 14, 'SOFT' 0;
  margin-top: 2px;
}

.species-card__trend {
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.05em;
  color: var(--ink);
  text-align: right;
  line-height: 1.2;
}
.species-card__trend strong {
  display: block;
  font-size: 1.35em;
  font-weight: 600;
  color: var(--spruce);
}
.species-card__trend--down strong { color: var(--tanager); }

/* ============================================================
   METHODS PREVIEW — two-up with ink illustration
   ============================================================ */
.methods-preview {
  padding-top: clamp(4rem, 6vw, 6rem);
  padding-bottom: clamp(4rem, 6vw, 6rem);
  background: var(--paper-warm);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.methods-preview__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.5rem;
}
@media (min-width: 900px) {
  .methods-preview__grid { grid-template-columns: 1.1fr 0.9fr; gap: 4rem; align-items: center; }
}

.methods-preview__copy h2 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  font-variation-settings: 'opsz' 144, 'SOFT' 30;
  letter-spacing: -0.03em;
  line-height: 1.0;
  margin-bottom: 1.25rem;
}
.methods-preview__copy h2 em {
  font-style: italic;
  color: var(--tanager);
}

.methods-preview__copy p {
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 52ch;
  margin-bottom: 1rem;
}

.methods-preview__codes {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 2rem 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.methods-preview__codes li {
  display: flex;
  flex-direction: column;
  padding: 0.9rem 0.5rem 0.9rem 0;
  border-left: 1px solid color-mix(in srgb, var(--ink) 22%, transparent);
}
.methods-preview__codes li:first-child { border-left: 0; padding-left: 0; }
.methods-preview__codes li:not(:first-child) { padding-left: 0.9rem; }

.code-abbr {
  font-family: var(--ff-display);
  font-size: 1.3rem;
  font-variation-settings: 'opsz' 24, 'SOFT' 30;
  letter-spacing: -0.01em;
  color: var(--spruce);
}
.code-label {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-top: 0.2rem;
}

/* The "block" illustration panel */
.block-illus {
  position: relative;
  aspect-ratio: 5 / 4;
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 1.5rem;
  overflow: hidden;
}

.block-illus__label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.block-illus__coord {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
}

/* ============================================================
   MAP PREVIEW
   ============================================================ */
.map-preview {
  padding-top: clamp(4rem, 6vw, 6rem);
  padding-bottom: clamp(4rem, 6vw, 6rem);
}

.map-preview__header {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-bottom: 3rem;
}
@media (min-width: 900px) {
  .map-preview__header { grid-template-columns: 1fr 1fr; align-items: end; gap: 3rem; }
}

.map-preview__frame {
  position: relative;
  border: 1px solid var(--ink);
  background: var(--paper-warm);
  padding: 0;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 0;
}

@media (max-width: 900px) {
  .map-preview__frame {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    aspect-ratio: auto;
  }
}

.map-preview__canvas {
  position: relative;
  background:
    radial-gradient(ellipse at top left, color-mix(in srgb, var(--paper) 80%, var(--spruce) 20%), transparent 60%),
    var(--paper);
  overflow: hidden;
  min-height: 400px;
}

.map-preview__canvas svg {
  width: 100%;
  height: 100%;
  display: block;
}

.map-preview__crosshair {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(to right, transparent 0%, transparent 49.9%, color-mix(in srgb, var(--ink) 15%, transparent) 49.9%, color-mix(in srgb, var(--ink) 15%, transparent) 50.1%, transparent 50.1%),
    linear-gradient(to bottom, transparent 0%, transparent 49.9%, color-mix(in srgb, var(--ink) 15%, transparent) 49.9%, color-mix(in srgb, var(--ink) 15%, transparent) 50.1%, transparent 50.1%);
}

.map-preview__legend {
  position: absolute;
  left: 1.25rem;
  bottom: 1.25rem;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border: 1px solid var(--ink);
  padding: 0.8rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.legend__title {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.legend__row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  color: var(--ink);
}

.legend__chip {
  width: 14px;
  height: 14px;
  display: inline-block;
}
.legend__chip--confirmed { background: var(--spruce); }
.legend__chip--probable { background: var(--goldfinch); }
.legend__chip--possible { background: color-mix(in srgb, var(--goldfinch) 35%, var(--paper)); outline: 1px solid var(--goldfinch); outline-offset: -1px; }

.map-preview__scale {
  position: absolute;
  bottom: 1.25rem;
  right: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.3rem;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}
.scale__bar {
  width: 120px;
  height: 8px;
  border: 1px solid var(--ink);
  background: linear-gradient(to right, var(--paper) 0 25%, var(--ink) 25% 50%, var(--paper) 50% 75%, var(--ink) 75% 100%);
}

.map-preview__sidebar {
  padding: 1.5rem 1.25rem;
  background: var(--paper);
  border-left: 1px solid var(--ink);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  overflow-y: auto;
}

.map-ctrl {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.map-ctrl__label {
  font-family: var(--ff-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.map-ctrl select,
.map-ctrl input[type="text"] {
  font-family: var(--ff-body);
  font-size: 13.5px;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' stroke='%231B1F19' stroke-width='1.5' fill='none' stroke-linecap='square'/></svg>");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 2rem;
}

.map-ctrl__toggle-row {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.5rem 0;
  font-size: 13px;
  cursor: pointer;
}
.toggle__label {
  font-family: var(--ff-body);
  color: var(--ink);
}
.toggle__state {
  width: 32px;
  height: 18px;
  border: 1px solid var(--ink);
  background: var(--paper);
  position: relative;
  flex-shrink: 0;
}
.toggle__state::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  background: var(--ink);
  transition: transform 0.2s ease;
}
.toggle input:checked ~ .toggle__state::after { transform: translateX(13px); }
.toggle input:checked ~ .toggle__state { background: var(--spruce); }
.toggle input:checked ~ .toggle__state::after { background: var(--paper); }
.toggle input { display: none; }

/* ============================================================
   CLOSING / CTA block
   ============================================================ */
.closing {
  padding: clamp(4rem, 8vw, 7rem) 0;
  background: var(--ink);
  color: var(--paper);
  border-top: 3px solid var(--tanager);
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 0.95 0 0 0 0 0.85 0 0 0 0.3 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  opacity: 0.5;
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.closing__inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  position: relative;
}

@media (min-width: 900px) {
  .closing__inner {
    grid-template-columns: 1.3fr 0.7fr;
    gap: 4rem;
    align-items: end;
  }
}

.closing h2 {
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  color: var(--paper);
  font-variation-settings: 'opsz' 144, 'SOFT' 30, 'WONK' 1;
  letter-spacing: -0.04em;
  line-height: 0.95;
}
.closing h2 em {
  font-style: italic;
  color: var(--goldfinch);
}

.closing p {
  font-family: var(--ff-display);
  font-variation-settings: 'opsz' 24, 'SOFT' 50;
  font-size: clamp(1.05rem, 1.2vw, 1.25rem);
  line-height: 1.5;
  color: color-mix(in srgb, var(--paper) 85%, transparent);
  max-width: 48ch;
}

.closing .btn {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
  margin-top: 1.5rem;
}
.closing .btn:hover { background: var(--tanager); color: var(--paper); border-color: var(--tanager); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: 2.75rem 0 1.5rem;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  color: var(--ink-muted);
  letter-spacing: 0.05em;
  border-top: 1px solid color-mix(in srgb, var(--ink) 20%, transparent);
  background: var(--paper);
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (max-width: 800px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 500px) {
  .footer__grid { grid-template-columns: 1fr; }
}

.footer__col h4 {
  font-family: var(--ff-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 0.85rem;
}
.footer__col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.45rem; }
.footer__col a { color: var(--ink-soft); transition: color 0.2s ease; }
.footer__col a:hover { color: var(--tanager); }

.footer__mast {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--ff-display);
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 0.75rem;
}
.footer__mast svg { width: 32px; height: 32px; }

.footer__credits {
  padding-top: 1.5rem;
  border-top: 1px solid color-mix(in srgb, var(--ink) 14%, transparent);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 10.5px;
}

/* ============================================================
   SPECIES DETAIL PAGE
   ============================================================ */
.species-detail-hero {
  padding-top: 2.5rem;
  padding-bottom: 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 900px) {
  .species-detail-hero { grid-template-columns: 1fr 1fr; gap: 3rem; align-items: stretch; }
}

.sdh__text { padding-top: 1rem; display: flex; flex-direction: column; gap: 1.25rem; }

.sdh__classification {
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
}
.sdh__classification span { display: inline-block; }
.sdh__classification span::before { content: '⟶'; margin-right: 0.5rem; color: var(--tanager); }
.sdh__classification span:first-child::before { content: none; }

.sdh__common {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-variation-settings: 'opsz' 144, 'SOFT' 40, 'WONK' 1;
  letter-spacing: -0.04em;
  line-height: 0.94;
}
.sdh__common em { font-style: italic; color: var(--tanager); }

.sdh__latin {
  font-family: var(--ff-display);
  font-style: italic;
  font-size: clamp(1.2rem, 1.6vw, 1.5rem);
  color: var(--spruce);
  font-variation-settings: 'opsz' 24, 'SOFT' 30;
}

.sdh__quick {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin-top: 0.5rem;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.sdh__quick dl {
  display: flex;
  flex-direction: column;
  padding: 0.9rem 1rem 0.9rem 0;
  margin: 0;
  border-left: 1px solid color-mix(in srgb, var(--ink) 18%, transparent);
}
.sdh__quick dl:first-child, .sdh__quick dl:nth-child(3) { border-left: 0; padding-left: 0; }
.sdh__quick dl:not(:first-child):not(:nth-child(3)) { padding-left: 1rem; }
.sdh__quick dt {
  font-family: var(--ff-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.sdh__quick dd {
  font-family: var(--ff-display);
  font-size: 1.35rem;
  font-variation-settings: 'opsz' 24, 'SOFT' 20;
  color: var(--ink);
  margin: 0;
}

.sdh__photo {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
}
.sdh__photo img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.93) contrast(1.04);
}
.sdh__photo-cap {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  right: 1rem;
  color: var(--paper);
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-shadow: 0 1px 6px rgba(0,0,0,0.55);
}

/* Narrative column */
.sd-body {
  padding: clamp(2.5rem, 4vw, 4rem) 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.5rem;
}
@media (min-width: 900px) {
  .sd-body { grid-template-columns: 1fr 1.1fr; gap: 4rem; }
}

.sd-body__nav {
  position: sticky;
  top: 90px;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  border-left: 1px solid color-mix(in srgb, var(--ink) 25%, transparent);
  padding-left: 1rem;
}
.sd-body__nav a {
  color: var(--ink-muted);
  padding-left: 0.5rem;
  border-left: 2px solid transparent;
  margin-left: -0.5rem;
  transition: all 0.2s ease;
}
.sd-body__nav a:hover { color: var(--ink); border-left-color: var(--tanager); }

.sd-prose h3 {
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  font-variation-settings: 'opsz' 144, 'SOFT' 20;
  letter-spacing: -0.025em;
  margin-bottom: 0.7rem;
  margin-top: 2.2rem;
  padding-top: 1.5rem;
  border-top: 1px solid color-mix(in srgb, var(--ink) 20%, transparent);
}
.sd-prose h3:first-child { padding-top: 0; border-top: 0; margin-top: 0; }

.sd-prose p {
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 60ch;
  margin-bottom: 1rem;
}

.sd-prose .dropcap::first-letter {
  font-family: var(--ff-display);
  font-size: 4.5rem;
  line-height: 0.85;
  font-variation-settings: 'opsz' 144, 'SOFT' 40, 'WONK' 1;
  color: var(--tanager);
  float: left;
  margin: 0.05em 0.12em 0 0;
  padding: 0;
}

/* Range maps row */
.range-maps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2rem 0;
}
@media (max-width: 800px) {
  .range-maps { grid-template-columns: 1fr; }
}

.range-map {
  border: 1px solid var(--ink);
  background: var(--paper-warm);
  padding: 0;
  aspect-ratio: 4 / 3.2;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.range-map__head {
  padding: 0.7rem 0.9rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid color-mix(in srgb, var(--ink) 22%, transparent);
}
.range-map__year {
  font-family: var(--ff-display);
  font-size: 1.1rem;
  font-variation-settings: 'opsz' 24, 'SOFT' 20;
  color: var(--ink);
}
.range-map__tag {
  font-family: var(--ff-mono);
  font-size: 9.5px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.range-map__plot { flex: 1; position: relative; }
.range-map__plot svg { width: 100%; height: 100%; }

/* Phenology chart */
.phenology {
  background: var(--paper-warm);
  border: 1px solid var(--ink);
  padding: 1.5rem 1.25rem 1.25rem;
  margin: 2rem 0;
}
.phenology__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.2rem;
}
.phenology__title {
  font-family: var(--ff-display);
  font-size: 1.35rem;
  font-variation-settings: 'opsz' 24, 'SOFT' 20;
}
.phenology__sub {
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.pheno-grid {
  display: grid;
  grid-template-columns: 90px repeat(12, 1fr);
  gap: 1px;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  background: color-mix(in srgb, var(--ink) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--ink) 14%, transparent);
}
.pheno-grid__cell,
.pheno-grid__head,
.pheno-grid__row-label {
  background: var(--paper);
  padding: 0.5rem 0.4rem;
  text-align: center;
}
.pheno-grid__row-label {
  text-align: left;
  color: var(--ink);
  font-weight: 500;
}
.pheno-grid__head {
  background: var(--paper-deep);
  color: var(--ink);
  font-weight: 500;
}
.pheno-grid__cell--active {
  background: var(--spruce);
}
.pheno-grid__cell--peak {
  background: var(--tanager);
}
.pheno-grid__cell--light {
  background: color-mix(in srgb, var(--spruce) 30%, var(--paper));
}

/* ============================================================
   SPECIES INDEX PAGE
   ============================================================ */
.species-index-head {
  padding-top: 2.5rem;
  padding-bottom: 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 900px) {
  .species-index-head { grid-template-columns: 1.2fr 0.8fr; align-items: end; gap: 3rem; }
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 1rem 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  margin-bottom: 2rem;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
}

.filter-chip {
  padding: 0.45rem 0.9rem;
  border: 1px solid color-mix(in srgb, var(--ink) 25%, transparent);
  background: var(--paper);
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-chip:hover { border-color: var(--ink); color: var(--ink); }
.filter-chip--active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.filter-count {
  margin-left: auto;
  color: var(--ink-muted);
  align-self: center;
}

/* ============================================================
   METHODS PAGE
   ============================================================ */
.methods-hero {
  padding-top: 3.5rem;
  padding-bottom: 3rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 900px) { .methods-hero { grid-template-columns: 1.1fr 0.9fr; gap: 3rem; align-items: end; } }

.methods-hero h1 {
  font-size: clamp(3rem, 7vw, 6rem);
  font-variation-settings: 'opsz' 144, 'SOFT' 40, 'WONK' 1;
  letter-spacing: -0.04em;
  line-height: 0.94;
}
.methods-hero h1 em { font-style: italic; color: var(--spruce); }

.methods-hero__lede {
  font-family: var(--ff-display);
  font-size: clamp(1.1rem, 1.3vw, 1.3rem);
  font-variation-settings: 'opsz' 24, 'SOFT' 40;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 52ch;
}

.codes-full {
  margin: 3rem 0;
  border: 1px solid var(--ink);
  background: var(--paper-warm);
  overflow: hidden;
}

.codes-full__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
}
.codes-full__title {
  font-family: var(--ff-display);
  font-size: 1.4rem;
}

.codes-full__grid {
  display: grid;
  grid-template-columns: 120px 1fr;
}

.codes-full__section {
  display: contents;
}

.codes-full__cat {
  padding: 1.25rem 1rem;
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper);
  background: var(--spruce);
  writing-mode: horizontal-tb;
}

.codes-full__cat--probable { background: var(--goldfinch); color: var(--ink); }
.codes-full__cat--possible { background: color-mix(in srgb, var(--catbird) 70%, var(--paper)); color: var(--ink); }
.codes-full__cat--confirmed { background: var(--spruce); color: var(--paper); }

.codes-full__rows {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1px;
  background: color-mix(in srgb, var(--ink) 10%, transparent);
  border-left: 1px solid color-mix(in srgb, var(--ink) 10%, transparent);
}

.code-row {
  padding: 0.9rem 0.85rem;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.code-row__letter {
  font-family: var(--ff-display);
  font-size: 1.2rem;
  font-variation-settings: 'opsz' 24, 'SOFT' 30;
  color: var(--ink);
}
.code-row__name {
  font-family: var(--ff-body);
  font-size: 12.5px;
  color: var(--ink-soft);
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */
.about-hero {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.about-hero h1 {
  font-size: clamp(3rem, 8vw, 7.5rem);
  font-variation-settings: 'opsz' 144, 'SOFT' 40, 'WONK' 1;
  letter-spacing: -0.045em;
  line-height: 0.9;
  max-width: 15ch;
}
.about-hero h1 em { font-style: italic; color: var(--tanager); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 2rem 0 4rem;
}
@media (min-width: 900px) { .about-grid { grid-template-columns: 0.85fr 1.15fr; gap: 4rem; align-items: start; } }

.about-grid__aside dl {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  border-top: 1px solid var(--ink);
  padding-top: 1.25rem;
}
.about-grid__aside dt {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.25rem;
}
.about-grid__aside dd {
  margin: 0;
  font-family: var(--ff-display);
  font-size: 1.05rem;
  font-variation-settings: 'opsz' 24, 'SOFT' 20;
}

.partners {
  padding: 3rem 0 4rem;
  border-top: 1px solid var(--ink);
}
.partners h3 {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ink-muted);
  font-weight: 500;
  margin-bottom: 1.5rem;
}
.partners__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0;
}
.partners__item {
  padding: 1rem 0;
  border-top: 1px solid color-mix(in srgb, var(--ink) 15%, transparent);
  font-family: var(--ff-display);
  font-size: 1rem;
  color: var(--ink-soft);
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes rise {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes wipe {
  from { clip-path: inset(0 100% 0 0); }
  to { clip-path: inset(0 0 0 0); }
}

.rise { animation: rise 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) both; }
.rise-1 { animation-delay: 0.05s; }
.rise-2 { animation-delay: 0.15s; }
.rise-3 { animation-delay: 0.25s; }
.rise-4 { animation-delay: 0.35s; }
.rise-5 { animation-delay: 0.45s; }
.rise-6 { animation-delay: 0.55s; }

.wipe { animation: wipe 1.4s cubic-bezier(0.77, 0, 0.18, 1) 0.3s both; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-delay: 0ms !important; transition-duration: 0.01ms !important; }
}

/* ============================================================
   Small helpers
   ============================================================ */
.flex { display: flex; }
.between { justify-content: space-between; }
.gap-sm { gap: 0.5rem; }
.gap-md { gap: 1rem; }
.text-muted { color: var(--ink-muted); }

.marginalia {
  position: relative;
  padding-left: 1rem;
  border-left: 2px solid var(--tanager);
  font-family: var(--ff-display);
  font-style: italic;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-muted);
  font-variation-settings: 'opsz' 14, 'SOFT' 30;
  max-width: 32ch;
  margin: 1.5rem 0;
}
.marginalia::before {
  content: '※';
  position: absolute;
  left: -0.4rem;
  top: -0.2rem;
  background: var(--paper);
  padding: 0 0.2rem;
  font-size: 13px;
  color: var(--tanager);
}

/* ============================================================
   MOBILE NAVIGATION (hamburger)
   ============================================================ */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--ink);
  background: var(--paper);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--ink);
  position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: var(--ink);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ============================================================
   TABLET & BELOW  ≤ 960px
   ============================================================ */
@media (max-width: 960px) {
  :root {
    --gutter: 1.1rem;
  }
  body { font-size: 16px; }

  .topbar__inner {
    grid-template-columns: auto 1fr auto;
    gap: 0.75rem;
    padding: 0.7rem 1rem;
  }
  .wordmark__sub { display: none; }
  .topbar__actions #topbar-clock { display: none; }
  .topbar__search span { display: none; }
  .topbar__search { padding: 0.4rem 0.55rem; }
  .topbar__search kbd { display: none; }
  .topbar__search::before {
    content: '';
    display: block;
    width: 14px; height: 14px;
    background: currentColor;
    mask-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><circle cx='7' cy='7' r='5' fill='none' stroke='black' stroke-width='1.5'/><path d='M11 11l3 3' stroke='black' stroke-width='1.5' fill='none'/></svg>");
    -webkit-mask-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><circle cx='7' cy='7' r='5' fill='none' stroke='black' stroke-width='1.5'/><path d='M11 11l3 3' stroke='black' stroke-width='1.5' fill='none'/></svg>");
  }

  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed;
    top: 62px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--paper);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 1.5rem;
    gap: 0;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 90;
    border-top: 1px solid var(--ink);
  }
  .nav.is-open { transform: translateX(0); }
  .nav a {
    padding: 1rem 0;
    border-bottom: 1px solid color-mix(in srgb, var(--ink) 15%, transparent);
    font-size: 1.25rem;
    font-family: var(--ff-display);
    font-variation-settings: 'opsz' 24, 'SOFT' 20;
    letter-spacing: -0.01em;
  }
  .nav a.active { color: var(--tanager); border-bottom-color: var(--tanager); }

  /* HERO */
  .hero__grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero__title { font-size: clamp(2.6rem, 11vw, 4.5rem); }
  .hero__photo { aspect-ratio: 4 / 3; }
  .hero__cta-row .btn { flex: 1 1 auto; justify-content: center; }

  /* STATS */
  .stats__row { grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .stat { padding: 0.75rem 0.5rem; }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .stat { border-top: 1px solid color-mix(in srgb, var(--ink) 18%, transparent); }
  .stat:nth-child(1), .stat:nth-child(2) { border-top: 0; }

  /* TIMELINE */
  .timeline__track { grid-template-columns: 1fr; gap: 1rem; padding-top: 1rem; }
  .timeline__scale { display: none; }

  /* FEATURED GRID */
  .featured__grid { grid-template-columns: repeat(2, 1fr); gap: 0.8rem; }
  .species-card { grid-column: span 1 !important; grid-row: auto !important; }
  .species-card--large { grid-column: span 2 !important; }
  .species-card--large .species-card__frame { aspect-ratio: 4 / 3; }
  .species-card__name { font-size: 1rem; }
  .species-card__latin { font-size: 11.5px; }
  .species-card__trend { font-size: 9.5px; }
  .species-card__trend strong { font-size: 1.1em; }

  /* METHODS PREVIEW */
  .methods-preview__grid { grid-template-columns: 1fr; gap: 2rem; }
  .methods-preview__codes { grid-template-columns: 1fr; }
  .methods-preview__codes li { padding: 0.8rem 0 !important; border-left: 0 !important; border-bottom: 1px solid color-mix(in srgb, var(--ink) 14%, transparent); }
  .methods-preview__codes li:last-child { border-bottom: 0; }

  /* MAP PREVIEW */
  .map-preview__frame { grid-template-columns: 1fr; grid-template-rows: 70vw auto; aspect-ratio: auto; min-height: 0; }
  .map-preview__canvas { min-height: 65vw; }
  .map-preview__sidebar { border-left: 0; border-top: 1px solid var(--ink); max-height: none; }
  .map-preview__legend { left: 0.75rem; bottom: 0.75rem; font-size: 10px; padding: 0.6rem 0.75rem; }
  .map-preview__scale { display: none; }

  /* CLOSING */
  .closing__inner { grid-template-columns: 1fr; gap: 1.25rem; }

  /* FOOTER */
  .footer__credits { flex-direction: column; align-items: flex-start; gap: 0.5rem; }

  /* SPECIES INDEX */
  .species-index-head { grid-template-columns: 1fr; }
  .filter-bar { gap: 0.4rem; font-size: 11px; overflow-x: auto; flex-wrap: nowrap; padding: 0.8rem 0; }
  .filter-chip { flex-shrink: 0; padding: 0.4rem 0.7rem; }
  .filter-count { display: none; }

  /* SPECIES DETAIL */
  .species-detail-hero { grid-template-columns: 1fr; gap: 1.5rem; }
  .sdh__common { font-size: clamp(2.4rem, 11vw, 3.6rem); }
  .sdh__latin { font-size: 1rem; }
  .sdh__quick { grid-template-columns: 1fr 1fr; }
  .sdh__quick dl { padding: 0.75rem 0.75rem 0.75rem 0 !important; border-left: 0 !important; }
  .sdh__quick dl:nth-child(2), .sdh__quick dl:nth-child(4) {
    padding-left: 0.75rem !important;
    border-left: 1px solid color-mix(in srgb, var(--ink) 18%, transparent) !important;
  }
  .sdh__quick dl:nth-child(3), .sdh__quick dl:nth-child(4) {
    border-top: 1px solid color-mix(in srgb, var(--ink) 15%, transparent);
  }

  .range-maps { grid-template-columns: 1fr; gap: 0.8rem; }
  .sd-body { grid-template-columns: 1fr; gap: 1.5rem; }
  .sd-body__nav {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    border-left: 0;
    padding-left: 0;
    padding-bottom: 1rem;
    border-bottom: 1px solid color-mix(in srgb, var(--ink) 18%, transparent);
    gap: 0.9rem;
  }
  .sd-prose h3 { font-size: 1.5rem; }
  .sd-prose p { font-size: 15.5px; }
  .sd-prose .dropcap::first-letter { font-size: 3.5rem; }

  /* PHENOLOGY: allow horizontal scroll on small screens */
  .phenology { overflow-x: auto; }
  .pheno-grid { min-width: 640px; }

  /* METHODS */
  .methods-hero { grid-template-columns: 1fr; }
  .methods-hero h1 { font-size: clamp(2.4rem, 10vw, 3.5rem); }
  .codes-full__grid { grid-template-columns: 1fr; }
  .codes-full__cat { writing-mode: horizontal-tb; padding: 0.6rem 1rem; }
  .codes-full__rows { grid-template-columns: 1fr 1fr; }

  /* ABOUT */
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-hero h1 { font-size: clamp(2.5rem, 11vw, 4.2rem); }

  /* DATA PAGE TABLE */
  main .page table { font-size: 12px; }
  main .page table th, main .page table td { padding: 0.55rem 0.6rem !important; }
  main .page table th:nth-child(3), main .page table td:nth-child(3),
  main .page table th:nth-child(4), main .page table td:nth-child(4) { display: none; }

  /* MAP PAGE — mobile stacked layout */
  .map-page {
    grid-template-columns: 1fr !important;
    grid-template-rows: auto 60vh auto;
    height: auto !important;
  }
  .map-page__leftrail,
  .map-page__rightrail {
    border: 0 !important;
    border-bottom: 1px solid var(--ink) !important;
    max-height: none;
    overflow-y: visible;
    padding: 1rem;
  }
  .map-page__canvas { min-height: 55vh; }
  .tool-rail, .zoom-controls { transform: scale(0.88); transform-origin: top left; }
  .zoom-controls { transform-origin: top right; }
  .map-readout { left: 0.5rem; right: 0.5rem; bottom: 0.5rem; font-size: 10px; padding: 0.55rem 0.7rem; }
}

/* ============================================================
   PHONE  ≤ 640px
   ============================================================ */
@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .page { padding: 0 1rem; }
  .section { padding: 2.5rem 0; }

  .wordmark__title { font-size: 0.95rem; }
  .wordmark__crest { width: 30px; height: 30px; }

  .hero__title { font-size: clamp(2.4rem, 13vw, 3.6rem); letter-spacing: -0.035em; }
  .hero__lede { font-size: 1rem; }
  .hero__cta-row { flex-direction: column; align-items: stretch; }
  .hero__cta-row .btn { text-align: center; }

  .display-2 { font-size: clamp(1.9rem, 8vw, 2.4rem); }

  .stat__num { font-size: 1.4rem; }
  .stat__label { font-size: 9.5px; }

  .atlas-card { padding: 1.1rem 1rem; }
  .atlas-card__years { font-size: 1.8rem; }

  .featured__grid { grid-template-columns: 1fr; }
  .species-card { grid-column: span 1 !important; }
  .species-card--large { grid-column: span 1 !important; }
  .species-card__frame { aspect-ratio: 4 / 3; }

  .map-preview__frame { grid-template-rows: 90vw auto; }
  .map-preview__canvas { min-height: 80vw; }

  .closing h2 { font-size: clamp(2rem, 10vw, 3rem); }
  .closing p { font-size: 1rem; }

  .phenology__head { flex-direction: column; align-items: flex-start; gap: 0.25rem; }

  .codes-full__rows { grid-template-columns: 1fr; }

  .sdh__quick {
    grid-template-columns: 1fr;
  }
  .sdh__quick dl {
    padding-left: 0 !important;
    border-left: 0 !important;
    border-top: 1px solid color-mix(in srgb, var(--ink) 15%, transparent);
  }
  .sdh__quick dl:nth-child(1) { border-top: 0; }

  .sd-body__nav { font-size: 10.5px; }
}

/* Leaflet atlas map styles */
#atlas-map, #home-map {
  width: 100%;
  height: 100%;
  background: var(--paper-deep);
}
.leaflet-container {
  font-family: var(--ff-body) !important;
  background: #f0e9d6 !important;
}
.leaflet-control-attribution {
  font-family: var(--ff-mono) !important;
  font-size: 10px !important;
  background: color-mix(in srgb, var(--paper) 90%, transparent) !important;
}
.leaflet-popup-content-wrapper {
  background: var(--paper) !important;
  border: 1px solid var(--ink) !important;
  border-radius: 0 !important;
  box-shadow: 0 3px 0 var(--ink) !important;
  padding: 0 !important;
}
.leaflet-popup-content {
  margin: 0.9rem 1rem !important;
  font-family: var(--ff-body) !important;
  color: var(--ink) !important;
  min-width: 200px;
}
.leaflet-popup-tip {
  background: var(--paper) !important;
  border: 1px solid var(--ink) !important;
}
.leaflet-popup-content .pop-title {
  font-family: var(--ff-display);
  font-size: 1rem;
  font-variation-settings: 'opsz' 24, 'SOFT' 20;
  line-height: 1.2;
  margin-bottom: 0.25rem;
}
.leaflet-popup-content .pop-sub {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.5rem;
}
.leaflet-popup-content dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.2rem 0.75rem;
  font-size: 12px;
  margin: 0;
}
.leaflet-popup-content dt {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.leaflet-popup-content dd { margin: 0; font-weight: 500; }

.leaflet-bar a, .leaflet-bar a:hover {
  background-color: var(--paper) !important;
  border-bottom: 1px solid color-mix(in srgb, var(--ink) 20%, transparent) !important;
  color: var(--ink) !important;
  font-family: var(--ff-display) !important;
  font-size: 1.2rem !important;
  line-height: 26px !important;
}
.leaflet-bar a:hover { background-color: var(--tanager) !important; color: var(--paper) !important; }
.leaflet-bar { border: 1px solid var(--ink) !important; border-radius: 0 !important; box-shadow: 2px 2px 0 var(--ink) !important; }
.leaflet-bar a:first-child { border-radius: 0 !important; }
.leaflet-bar a:last-child { border-radius: 0 !important; border-bottom: 0 !important; }