/* Duneline — landscape & garden design studio
   Field: sand #e8ddc8 warming to dusk pink #e9b7c2 with scroll (season-aware)
   Ink: shadow brown #4a3a2e   Stroke: brush red #c05a3a   Cool: sky grey-blue #ccd7de
   Type: Instrument Serif (display) + Instrument Sans (body & labels) */

:root {
  --sand:   #e8ddc8;
  --dusk:   #e9b7c2;
  --ink:    #4a3a2e;
  --stroke: #c05a3a;
  --sky:    #ccd7de;

  /* season vars are re-set live by main.js on scroll; these are the dawn defaults */
  --field:  #e8ddc8;
  --panel:  #e1d4bd;
  --panel2: #ded0b6;

  --edge:  color-mix(in oklab, var(--ink) 16%, var(--field));
  --muted: color-mix(in oklab, var(--ink) 62%, var(--field));

  --maxw: 1180px;
  --gut: clamp(20px, 5vw, 76px);
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "Instrument Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--field);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
  overflow-x: hidden;
  transition: background-color 500ms linear;
}

/* fixed living dune-field canvas behind everything */
#dune {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  display: block;
}

/* paper grain — the house varnish */
#grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

/* ---- shared type / layout ---- */

h1, h2, h3 { font-weight: 400; }

.display {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.01em;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
}

.section-index {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--stroke);
  margin-bottom: 1.4rem;
}

.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.visually-hidden, .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;
}

a { color: inherit; }

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

.site-head {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: baseline;
  gap: clamp(0.8rem, 3vw, 2.2rem);
  padding: 0.9rem var(--gut);
  background: color-mix(in oklab, var(--field) 88%, var(--ink));
  transition: background-color 500ms linear;
}
.wordmark {
  font-family: var(--serif);
  font-size: 1.5rem;
  text-decoration: none;
  letter-spacing: -0.01em;
  margin-right: auto;
}
.site-head nav {
  display: flex;
  gap: clamp(0.7rem, 2vw, 1.6rem);
  flex-wrap: wrap;
}
.site-head nav a, .guide-link {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--muted);
  transition: color 200ms ease;
}
.site-head nav a:hover, .guide-link:hover, .site-head nav a:focus-visible { color: var(--stroke); }
.guide-link {
  color: var(--ink);
  border-bottom: 1px solid var(--stroke);
  padding-bottom: 1px;
}

/* ---- hero ---- */

.hero {
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8vh var(--gut) 6vh;
  max-width: var(--maxw);
  margin: 0 auto;
  position: relative;
}
/* cartographic label casing: text sits over live contour lines, so it gets a
   field-coloured halo exactly the way map labels are set over topographic maps.
   --field updates with the season, so the casing always matches the ground. */
.hero .eyebrow, .hero .lede, .hero-meta, .scroll-cue, .hero-margin {
  text-shadow: 0 0 5px var(--field), 0 0 5px var(--field), 0 0 3px var(--field), 0 0 2px var(--field);
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(4.5rem, 19vw, 15rem);
  line-height: 0.86;
  letter-spacing: -0.02em;
  margin: 0.5rem 0 1.4rem;
  text-shadow: 0 0 8px var(--field), 0 0 4px var(--field);
}
.hero .eyebrow { margin-bottom: 0.4rem; }
.lede {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.9vw, 2.15rem);
  line-height: 1.24;
  max-width: 22ch;
  color: var(--ink);
}
.hero-meta {
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
  margin-top: 2.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero-meta span { position: relative; padding-left: 1.1rem; }
.hero-meta span::before {
  content: ""; position: absolute; left: 0; top: 0.42em;
  width: 7px; height: 7px; background: var(--stroke);
}
.hero-margin {
  position: absolute;
  right: calc(var(--gut) - 0.4rem);
  top: 50%;
  transform: translateY(-50%) rotate(90deg);
  transform-origin: right center;
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
  pointer-events: none;
}
@media (max-width: 900px){ .hero-margin { display: none; } }
.scroll-cue {
  position: absolute;
  left: var(--gut); bottom: 3vh;
  display: flex; align-items: center; gap: 0.7rem;
  font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--muted); text-decoration: none;
}
.cue-mark {
  width: 46px; height: 1px; background: var(--ink);
  position: relative; overflow: hidden;
}
.cue-mark::after {
  content: ""; position: absolute; inset: 0;
  background: var(--stroke); transform: translateX(-100%);
  animation: cue 2.6s cubic-bezier(0.7,0,0.3,1) infinite;
}
@keyframes cue { 0%{transform:translateX(-100%)} 55%,100%{transform:translateX(100%)} }

/* ---- panels (tone tiers, not lines) ---- */

.panel, .panel-2, .aerial {
  position: relative;
}
.panel  { background: color-mix(in oklab, var(--field) 95%, var(--ink)); transition: background-color 500ms linear; }
.panel-2{ background: color-mix(in oklab, var(--field) 91%, var(--ink)); transition: background-color 500ms linear; }

section.statement, section.services, section.work,
section.planting, section.aerial {
  padding: clamp(4.5rem, 11vh, 9rem) var(--gut);
}
.statement, .services, .work, .planting { }
.statement > *, .services > *, .work > *, .planting > * { max-width: var(--maxw); margin-inline: auto; }

.statement h2 { margin-bottom: 2.6rem; }
.statement-cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: clamp(1.6rem, 4vw, 3.4rem);
  max-width: var(--maxw);
  margin-inline: auto;
  font-size: 1.06rem;
  max-width: 60ch;
}
@media (min-width: 720px){ .statement-cols { max-width: var(--maxw); } }
.statement-cols p { color: color-mix(in oklab, var(--ink) 88%, var(--field)); }

/* ---- services list ---- */

.service-list { list-style: none; max-width: var(--maxw); margin-inline: auto; }
.service-list li {
  display: grid;
  grid-template-columns: minmax(0,0.34fr) minmax(0,1fr);
  gap: clamp(1rem, 4vw, 3rem);
  padding: 2rem 0;
  align-items: start;
}
.service-list li + li { border-top: 1px solid var(--edge); }
.s-num {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  line-height: 1;
  color: var(--stroke);
}
.service-list h3 {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin-bottom: 0.5rem;
}
.service-list p { max-width: 46ch; color: color-mix(in oklab, var(--ink) 86%, var(--field)); }

/* ---- work / seed packets ---- */

.work-head { margin-bottom: 3.2rem; max-width: var(--maxw); margin-inline: auto; }
.work-head h2 { margin: 0.4rem 0 1rem; }
.work-note { max-width: 44ch; color: var(--muted); }

.packet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: clamp(1rem, 2.4vw, 1.6rem);
  max-width: var(--maxw);
  margin-inline: auto;
}
.packet {
  background: color-mix(in oklab, var(--field) 78%, #fff);
  color: var(--ink);
  padding: 1.2rem 1.2rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: transform 320ms cubic-bezier(0.2,0.7,0.2,1), background-color 320ms ease;
}
.packet:hover { transform: translateY(-4px); background: color-mix(in oklab, var(--field) 64%, #fff); }
.packet-top { display: flex; justify-content: space-between; align-items: baseline; gap: 0.6rem; }
.packet-num {
  font-family: var(--serif); font-size: 2.1rem; line-height: 0.9; color: var(--stroke);
}
.packet-year { font-size: 0.72rem; letter-spacing: 0.14em; color: var(--muted); }
.packet-swatch { width: 100%; height: 74px; display: block; }
.packet-name { font-family: var(--serif); font-size: 1.55rem; line-height: 1.02; }
.packet-place { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-top: -0.4rem; }
.packet-desc { font-size: 0.92rem; color: color-mix(in oklab, var(--ink) 84%, var(--field)); }
.packet-seed {
  margin-top: auto;
  border-top: 1px solid var(--edge);
  padding-top: 0.7rem;
  display: flex; flex-wrap: wrap; gap: 0.35rem;
}
.seed-tag {
  font-size: 0.68rem; letter-spacing: 0.06em;
  padding: 0.18rem 0.5rem;
  background: color-mix(in oklab, var(--sky) 55%, var(--field));
  color: color-mix(in oklab, var(--ink) 80%, var(--field));
  white-space: nowrap;
}
.seed-tag.stroke { background: color-mix(in oklab, var(--stroke) 22%, var(--field)); color: color-mix(in oklab, var(--ink) 90%, #000); }

/* ---- aerial ---- */

.aerial {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gut);
  background: transparent;
}
.aerial-copy h2 { margin: 0.4rem 0 1.4rem; }
.aerial-copy p { max-width: 42ch; color: color-mix(in oklab, var(--ink) 88%, var(--field)); }
.aerial-cap {
  margin-top: 1.6rem !important;
  font-size: 0.78rem; letter-spacing: 0.04em; color: var(--muted);
  border-left: 2px solid var(--stroke); padding-left: 0.9rem;
}
.aerial-fig { position: relative; aspect-ratio: 1 / 1; width: 100%; }
#aerial-canvas { width: 100%; height: 100%; display: block; }

/* ---- planting ---- */

.planting-note { max-width: 46ch; color: var(--muted); margin: 0.6rem 0 2.8rem; }
.plant-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 0;
  max-width: var(--maxw);
  margin-inline: auto;
}
.plant { padding: 1.6rem 0; border-top: 1px solid var(--edge); }
.plant dt { font-family: var(--serif); font-size: 1.7rem; margin-bottom: 0.4rem; }
.plant-meta {
  display: block;
  font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--stroke); margin-bottom: 0.5rem;
}
.plant dd { font-size: 0.95rem; max-width: 42ch; color: color-mix(in oklab, var(--ink) 84%, var(--field)); }
@media (min-width: 620px){
  .plant-list { column-gap: clamp(1.5rem, 4vw, 3.4rem); }
  .plant { padding: 1.6rem 0; }
}

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

.site-foot {
  position: relative;
  padding: clamp(4rem, 12vh, 8rem) var(--gut) 2.5rem;
  background: transparent;
}
.site-foot > * { max-width: var(--maxw); margin-inline: auto; }
/* footer floats over the live contour field too — same map-label casing */
.site-foot .axiom, .site-foot .foot-label, .site-foot .foot-line,
.site-foot .credit, .splash-btn {
  text-shadow: 0 0 6px var(--field), 0 0 5px var(--field), 0 0 3px var(--field);
}
.splash-wrap { text-align: center; margin-bottom: clamp(3rem, 8vh, 6rem); }
.axiom {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3.6vw, 2.6rem);
  line-height: 1.16;
  max-width: 20ch;
  margin: 0 auto 2rem;
  font-style: italic;
}
.splash-btn {
  font-family: var(--sans);
  font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink);
  padding: 0.7rem 1.4rem;
  cursor: pointer;
  transition: background-color 240ms ease, color 240ms ease, border-color 240ms ease;
}
.splash-btn:hover, .splash-btn:focus-visible {
  background: var(--stroke); border-color: var(--stroke); color: #fbf3e4;
}
.foot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: clamp(1.6rem, 4vw, 3.4rem);
  padding-top: clamp(2rem, 5vh, 3.4rem);
  border-top: 1px solid var(--edge);
}
.foot-label {
  font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--stroke); margin-bottom: 0.9rem;
}
.foot-line { font-size: 0.92rem; color: color-mix(in oklab, var(--ink) 82%, var(--field)); margin-bottom: 0.5rem; }
.foot-line a { text-decoration: none; border-bottom: 1px solid var(--edge); }
.foot-line a:hover { border-color: var(--stroke); color: var(--stroke); }
.credit {
  margin-top: clamp(3rem, 7vh, 5rem);
  font-size: 0.74rem; letter-spacing: 0.1em; color: var(--muted); text-align: center;
}

/* ---- reveals ---- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 780ms cubic-bezier(0.2,0.7,0.2,1), transform 780ms cubic-bezier(0.2,0.7,0.2,1);
}
.reveal.in { opacity: 1; transform: none; }

/* ---- focus ---- */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--stroke);
  outline-offset: 3px;
}

/* ---- responsive recompose ---- */
@media (max-width: 860px){
  .statement-cols { grid-template-columns: 1fr; }
  .aerial { grid-template-columns: 1fr; }
  .aerial-fig { max-width: 460px; margin-inline: auto; }
  .service-list li { grid-template-columns: auto 1fr; align-items: baseline; }
  .s-num { font-size: 2rem; }
}
@media (max-width: 560px){
  .site-head { flex-wrap: wrap; }
  .site-head nav { order: 3; width: 100%; }
  .hero h1 { font-size: clamp(4rem, 26vw, 8rem); }
  .hero-meta { gap: 1rem; }
}

/* ---- reduced motion: dignified static page ---- */
@media (prefers-reduced-motion: reduce){
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .cue-mark::after { animation: none; transform: translateX(0); background: var(--stroke); width: 40%; }
  body { transition: none; }
  .panel, .panel-2 { transition: none; }
}