/* ============================================================
   Layered Insights GIS — design tokens
   Palette drawn from real cartographic convention: a dark
   basemap ink, with contour ochre / hydrology teal / vegetation
   olive standing in for actual GIS layer types.
   ============================================================ */

:root {
  --ink: #10151A;
  --ink-2: #161D24;
  --panel: #1C252D;
  --panel-2: #232E37;
  --border: rgba(232, 228, 218, 0.10);
  --border-strong: rgba(232, 228, 218, 0.20);

  --paper: #E9E4D8;
  --paper-dim: #B9C0C4;
  --muted: #7E8D96;

  --ochre: #C98A4B;
  --ochre-dim: rgba(201, 138, 75, 0.35);
  --teal: #4C97A8;
  --teal-dim: rgba(76, 151, 168, 0.35);
  --olive: #7C9473;
  --olive-dim: rgba(124, 148, 115, 0.35);
  --clay: #B45C4A;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "IBM Plex Sans", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --max-w: 1120px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

/* subtle contour texture on the base ink */
.contour-field {
  background-image:
    repeating-radial-gradient(circle at 18% 30%, rgba(201,138,75,0.05) 0, rgba(201,138,75,0.05) 1px, transparent 1px, transparent 34px),
    repeating-radial-gradient(circle at 82% 70%, rgba(76,151,168,0.05) 0, rgba(76,151,168,0.05) 1px, transparent 1px, transparent 42px);
}

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

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.1;
  margin: 0;
  color: var(--paper);
}

p { margin: 0; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(16, 21, 26, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.wordmark {
  display: flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--paper);
}

.wordmark .mark {
  display: inline-flex;
  width: 20px;
  height: 20px;
  position: relative;
}
.wordmark .mark span {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 2px;
  opacity: 0.85;
}
.wordmark .mark span:nth-child(1) { background: var(--ochre); top: 0; left: 0; }
.wordmark .mark span:nth-child(2) { background: var(--teal); top: 4px; left: 4px; }
.wordmark .mark span:nth-child(3) { background: var(--olive); top: 8px; left: 8px; }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.94rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--paper-dim);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--paper);
  border-color: var(--ochre);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  color: var(--paper);
  width: 38px;
  height: 34px;
  cursor: pointer;
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--ink-2);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 8px 28px 18px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav-toggle { display: block; }
}

/* ---------------- buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  padding: 12px 22px;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--ochre);
  color: #17110A;
}
.btn-primary:hover { background: #d99a5d; }

.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--paper);
}
.btn-ghost:hover { border-color: var(--paper-dim); }

/* ---------------- hero / layer stack ---------------- */

.hero {
  padding: 72px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.hero h1 {
  font-size: clamp(2.3rem, 4.2vw, 3.4rem);
  margin-top: 14px;
  max-width: 13ch;
}

.hero .lede {
  margin-top: 20px;
  font-size: 1.08rem;
  color: var(--paper-dim);
  max-width: 46ch;
}

.hero-cta {
  margin-top: 32px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.coord {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
}

/* layer stack graphic */
.stack-stage {
  position: relative;
  height: 400px;
}

.layer-sheet {
  position: absolute;
  inset: 30px 10px 60px 40px;
  border-radius: 5px;
  border: 1px solid var(--border-strong);
  overflow: hidden;
  transform: translate(var(--tx, 0), var(--ty, 0)) rotate(var(--rot, 0deg));
  animation: sheetIn 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: var(--delay, 0s);
  opacity: 1;
  transition: opacity 0.35s ease;
}

.layer-sheet.depth-hidden {
  opacity: 0;
  pointer-events: none;
}

@keyframes sheetIn {
  from {
    transform: translate(var(--tx, 0), calc(var(--ty, 0px) + 46px)) rotate(var(--rot, 0deg)) scale(0.94);
  }
  to {
    transform: translate(var(--tx, 0), var(--ty, 0)) rotate(var(--rot, 0deg));
  }
}

.layer-photo {
  background-size: cover;
  background-position: center;
  filter: grayscale(1) brightness(0.62) contrast(1.08);
  transition: filter 0.5s ease, box-shadow 0.5s ease;
}
.layer-photo.active {
  filter: grayscale(0) brightness(0.95) contrast(1.02) saturate(1.05);
}
.layer-photo::before {
  content: "";
  position: absolute;
  inset: 0;
  mix-blend-mode: color;
  opacity: 0.7;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
.layer-photo.active::before { opacity: 0; }
.layer-photo[data-layer="contours"]::before { background: var(--ochre); }
.layer-photo[data-layer="huc12"]::before { background: var(--teal); }
.layer-photo[data-layer="parcels"]::before { background: var(--olive); }
.layer-photo[data-layer="buildings"]::before { background: var(--clay); }

.layer-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16,21,26,0.1), rgba(16,21,26,0.5));
  pointer-events: none;
}

.layer-photo.active[data-layer="contours"] { box-shadow: 0 0 46px -6px var(--ochre); }
.layer-photo.active[data-layer="huc12"] { box-shadow: 0 0 46px -6px var(--teal); }
.layer-photo.active[data-layer="parcels"] { box-shadow: 0 0 46px -6px var(--olive); }
.layer-photo.active[data-layer="buildings"] { box-shadow: 0 0 46px -6px var(--clay); }

.sheet-label {
  position: absolute;
  top: 12px;
  left: 16px;
  color: var(--paper);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 1;
}
.sheet-label .name {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  text-shadow: 0 1px 6px rgba(0,0,0,0.7);
}
.sheet-label .tech {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--paper-dim);
  text-shadow: 0 1px 4px rgba(0,0,0,0.7);
  margin-top: 2px;
}
.layer-sheet.active .sheet-label { opacity: 1; transform: translateY(0); }

.layer-sheet[data-layer="base"] {
  z-index: 1;
  background:
    radial-gradient(circle at 30% 20%, rgba(76,151,168,0.08), transparent 55%),
    var(--panel-2);
  background-image:
    linear-gradient(rgba(232,228,218,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,228,218,0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--muted);
}
.layer-sheet[data-layer="base"] .chrome {
  position: absolute;
  bottom: 14px;
  right: 14px;
  width: 110px;
  height: 38px;
}

.layer-sheet[data-layer="contours"] { z-index: 2; }
.layer-sheet.active[data-layer="contours"] { border-color: var(--ochre); }

.layer-sheet[data-layer="huc12"] { z-index: 3; }
.layer-sheet.active[data-layer="huc12"] { border-color: var(--teal); }

.layer-sheet[data-layer="parcels"] { z-index: 4; }
.layer-sheet.active[data-layer="parcels"] { border-color: var(--olive); }

.layer-sheet[data-layer="buildings"] { z-index: 5; }
.layer-sheet.active[data-layer="buildings"] { border-color: var(--clay); }

.layer-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.layer-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--paper-dim);
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  padding: 7px 13px 7px 10px;
  cursor: pointer;
  user-select: none;
}

.layer-chip input { accent-color: var(--ochre); cursor: pointer; }
.layer-chip .swatch {
  width: 9px; height: 9px; border-radius: 2px;
}

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

section { padding: 76px 0; }
.section-border-top { border-top: 1px solid var(--border); }

.section-head {
  max-width: 60ch;
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  margin-top: 10px;
}

.section-head .lede {
  margin-top: 14px;
  color: var(--paper-dim);
  font-size: 1.02rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .grid-4 { grid-template-columns: 1fr; }
}

.grid-flex {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.card {
  background: var(--ink);
  padding: 32px 28px;
}

.card .num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
}

.card h3 {
  font-size: 1.2rem;
  margin-top: 14px;
}

.card p {
  margin-top: 12px;
  color: var(--paper-dim);
  font-size: 0.96rem;
}

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

.site-footer {
  border-top: 1px solid var(--border);
  padding: 44px 0 32px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-grid a {
  text-decoration: none;
  color: var(--paper-dim);
}
.footer-grid a:hover { color: var(--paper); }

.footer-cols {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0 0 12px;
  font-weight: 400;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.92rem;
}

.footer-bottom {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--muted);
}

/* ---------------- page hero (inner pages) ---------------- */

.page-hero {
  padding: 56px 0 20px;
}
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-top: 12px;
  max-width: 20ch;
}
.page-hero .lede {
  margin-top: 18px;
  color: var(--paper-dim);
  max-width: 52ch;
  font-size: 1.04rem;
}

/* ---------------- services page ---------------- */

.service-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  padding: 36px 0;
  border-top: 1px solid var(--border);
}
.service-row:last-child { border-bottom: 1px solid var(--border); }

@media (max-width: 720px) {
  .service-row { grid-template-columns: 1fr; gap: 12px; }
}

.service-row h3 {
  font-size: 1.35rem;
}
.service-row .lede {
  margin-top: 14px;
  color: var(--paper-dim);
}
.service-row ul {
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--paper-dim);
  font-size: 0.95rem;
}
.service-row li { margin-top: 6px; }

/* ---------------- about page ---------------- */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
@media (max-width: 880px) {
  .about-grid { grid-template-columns: 1fr; }
}

.stat-row {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.stat {
  font-family: var(--font-mono);
}
.stat .n {
  font-family: var(--font-display);
  font-size: 2.1rem;
  color: var(--paper);
  display: block;
}
.stat .l {
  font-size: 0.76rem;
  color: var(--muted);
}

.principle-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.principle-list li {
  padding-left: 20px;
  border-left: 2px solid var(--border-strong);
  color: var(--paper-dim);
}
.principle-list strong {
  display: block;
  color: var(--paper);
  font-weight: 500;
  margin-bottom: 4px;
}

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

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
}
@media (max-width: 880px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 26px;
}
.contact-details .item .l {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}
.contact-details .item .v {
  margin-top: 4px;
  font-size: 1.05rem;
}
.contact-details .item a {
  text-decoration: none;
  border-bottom: 1px solid var(--border-strong);
}
.contact-details .item a:hover { border-color: var(--ochre); }

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}
.form-field label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}
.form-field input,
.form-field textarea,
.form-field select {
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  padding: 11px 13px;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 0.96rem;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: 2px solid var(--ochre);
  outline-offset: 1px;
}
.form-field textarea { resize: vertical; min-height: 120px; }

:focus-visible {
  outline: 2px solid var(--ochre);
  outline-offset: 2px;
}