/* Acre by Air. Hand-written, no framework. Colors follow USGS topo conventions:
   brown contours, blue water, red map marks, green vegetation. */

:root {
  color-scheme: light;
  --paper: #ebeeea;
  --panel: #e0e5e0;
  --ink: #14262c;
  --muted: #475a5f;
  --rule: rgba(20, 38, 44, 0.22);
  --field: #566a6f;
  --contour: #8a5c2c;
  --water: #1b5a78;
  --on-water: #ffffff;
  --mark: #a33220;
  --canopy: #4d7a48;
  --focus: #1b5a78;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: "Avenir Next", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --maxw: 70rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #0e1a1e;
    --panel: #15262b;
    --ink: #e6ece8;
    --muted: #a3b5b7;
    --rule: rgba(230, 236, 232, 0.22);
    --field: #839a9d;
    --contour: #c99d68;
    --water: #6db4d4;
    --on-water: #0e1a1e;
    --mark: #ef8a73;
    --canopy: #7fa878;
    --focus: #6db4d4;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #0e1a1e;
  --panel: #15262b;
  --ink: #e6ece8;
  --muted: #a3b5b7;
  --rule: rgba(230, 236, 232, 0.22);
  --field: #839a9d;
  --contour: #c99d68;
  --water: #6db4d4;
  --on-water: #0e1a1e;
  --mark: #ef8a73;
  --canopy: #7fa878;
  --focus: #6db4d4;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.6 var(--sans);
}

h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; margin: 0; }
p { margin: 0 0 1rem; }
a { color: inherit; }

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

.wrap { width: min(100% - 2rem, var(--maxw)); margin-inline: auto; }
section[id] { scroll-margin-top: 4.25rem; }

.skip {
  position: absolute; left: 0.5rem; top: -4rem; z-index: 50;
  background: var(--ink); color: var(--paper); padding: 0.6rem 0.9rem;
}
.skip:focus { top: 0.5rem; }

/* Header */
.site {
  position: sticky; top: 0; z-index: 20;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.bar { display: flex; align-items: center; gap: 1.25rem; min-height: 3.5rem; }
.brand {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; text-decoration: none;
}
.mark { width: 2rem; height: 2rem; flex: none; }
/* Logo from acre-by-air-logo/logo-site-small.svg: lines brown, drone ink, per the logo README. */
.mark .ln { stroke: var(--contour); }
.mark .dr { stroke: var(--ink); }
.mark .drf { fill: var(--ink); }
.links { display: none; gap: 1.25rem; margin-left: auto; font-size: 0.95rem; }
.links a { text-decoration: none; padding: 0.4rem 0; border-bottom: 1px solid transparent; }
.links a:hover { border-bottom-color: var(--contour); }
.actions { display: flex; align-items: center; gap: 0.5rem; margin-left: auto; }
@media (min-width: 52rem) {
  .links { display: flex; }
  .actions { margin-left: 0; }
}
.theme {
  display: inline-grid; place-items: center; width: 2.75rem; height: 2.75rem;
  background: none; color: var(--ink); border: 1px solid var(--rule); border-radius: 2px; cursor: pointer;
}
.theme:hover { border-color: var(--ink); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 2.75rem; padding: 0.65rem 1.15rem;
  background: var(--water); color: var(--on-water);
  border: 1px solid var(--water); border-radius: 2px;
  font: 600 1rem/1.2 var(--sans); text-decoration: none; cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.btn.alt { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn.alt:hover { background: var(--panel); filter: none; }
.btn.small { min-height: 2.75rem; padding: 0.5rem 1rem; }
.btn[disabled] { opacity: 0.6; cursor: progress; }

/* Shared bits */
.sheet { font: 0.85rem/1.4 var(--mono); color: var(--muted); margin: 0 0 0.75rem; }
.code { font-family: var(--mono); color: var(--contour); margin-right: 0.35rem; }
.ph { font-family: var(--mono); font-size: 0.78rem; color: var(--mark); }
.intro { max-width: 40rem; color: var(--muted); margin-top: 0.9rem; font-size: 1.05rem; }
.fine { font-size: 0.9rem; color: var(--muted); max-width: 44rem; }
.section { padding: 4rem 0; border-top: 1px solid var(--rule); }
.section h2 { font-size: clamp(1.6rem, 3.6vw, 2.35rem); max-width: 22ch; }
.split { display: grid; gap: 2rem; }
@media (min-width: 52rem) { .split { grid-template-columns: 5fr 7fr; gap: 3.5rem; } }

/* Art layers (masks come from art/art.css) */
.art { position: absolute; inset: 0; overflow: hidden; }
.layer {
  position: absolute; inset: 0;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  -webkit-mask-size: cover; mask-size: cover;
  -webkit-mask-position: center; mask-position: center;
}
/* Real photos: put an <img> inside any .art block in place of the layers. */
.art img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.l-lines { background: var(--contour); }
.l-water { background: var(--water); opacity: 0.55; }
.l-marks { background: var(--mark); }
.l-canopy { background: var(--canopy); opacity: 0.85; }
.l-hill { background: var(--ink); opacity: 0.5; }

/* Hero */
.hero { position: relative; overflow: hidden; display: grid; align-items: center; min-height: min(86svh, 44rem); padding: 4.5rem 0; background: var(--paper); }
.hero .art { inset: -1.5rem; transform: translate3d(var(--px, 0), var(--py, 0), 0); transition: transform 0.25s ease-out; }
.hero .l-lines { opacity: 0.62; }
.hero .l-water { opacity: 0.4; }
.hero::before {
  content: ""; position: absolute; inset: 0.7rem; border: 1px solid var(--rule); pointer-events: none; z-index: 1;
}
.grat { position: absolute; z-index: 2; font: 0.75rem var(--mono); color: var(--muted); background: var(--paper); padding: 0 0.4rem; }
.grat.tl { top: 0.2rem; left: 1.4rem; }
.grat.br { bottom: 0.2rem; right: 1.4rem; }
.hero .wrap { position: relative; z-index: 2; }
.plate {
  max-width: 35rem; background: var(--paper); padding: 1.6rem 1.5rem 1.7rem;
  border: 1px solid var(--rule); border-left: 5px solid var(--contour);
}
.plate h1 { font-size: clamp(2rem, 5.4vw, 3.4rem); font-weight: 750; letter-spacing: -0.035em; }
.lede { margin: 1.1rem 0 1.4rem; color: var(--muted); font-size: 1.08rem; }
.cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 0; }

/* Facts strip under the hero */
.facts { border-top: 1px solid var(--rule); background: var(--panel); }
.facts ul { list-style: none; margin: 0 auto; padding: 0; display: grid; grid-template-columns: 1fr 1fr; }
.facts li { display: grid; gap: 0.15rem; padding: 1.1rem 1rem 1.1rem 0; border-bottom: 1px solid var(--rule); }
.facts .k { font: 700 1.05rem/1.2 var(--mono); color: var(--contour); }
.facts .v { font-size: 0.9rem; line-height: 1.4; color: var(--muted); }
@media (min-width: 52rem) {
  .facts ul { grid-template-columns: repeat(4, 1fr); }
  .facts li { border-bottom: 0; padding: 1.4rem 1.5rem 1.4rem 0; }
  .facts li + li { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
}

/* Tiles */
.tiles { display: grid; gap: 0.9rem; margin-top: 2.2rem; }
.tile { position: relative; margin: 0; aspect-ratio: 3 / 2; border: 1px solid var(--rule); background: var(--panel); overflow: hidden; }
.tile figcaption {
  position: absolute; left: 0; bottom: 0; z-index: 2; padding: 0.35rem 0.7rem;
  background: var(--paper); border-top: 1px solid var(--rule); border-right: 1px solid var(--rule);
  font: 0.8rem/1.3 var(--mono);
}
@media (min-width: 40rem) {
  .tiles { grid-template-columns: repeat(6, 1fr); grid-auto-rows: 14rem; }
  .tile { aspect-ratio: auto; }
  .t1 { grid-column: span 4; }
  .t2 { grid-column: span 2; }
  .t3, .t4, .t5 { grid-column: span 2; }
}

/* Video placeholder */
.pair { display: grid; gap: 1.5rem; margin-top: 2.5rem; align-items: center; }
@media (min-width: 52rem) { .pair { grid-template-columns: 7fr 5fr; gap: 2.5rem; } }
.video { position: relative; aspect-ratio: 16 / 9; border: 1px solid var(--rule); background: var(--panel); overflow: hidden; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); z-index: 2;
  display: grid; place-items: center; width: 4rem; height: 4rem; border-radius: 50%;
  background: var(--paper); color: var(--ink); border: 2px solid var(--ink); cursor: pointer;
}
.video[data-yt=""] .play { display: none; }
.vcap {
  position: absolute; left: 0; bottom: 0; z-index: 2; margin: 0; padding: 0.35rem 0.7rem;
  background: var(--paper); border-top: 1px solid var(--rule); border-right: 1px solid var(--rule);
  font: 0.8rem/1.3 var(--mono);
}
.vtext h3, .compare h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.vtext p, .compare p { color: var(--muted); margin: 0; }

/* Comparison sliders */
.compares { display: grid; gap: 2.5rem; margin-top: 3rem; }
@media (min-width: 52rem) { .compares { grid-template-columns: 1fr 1fr; gap: 2rem; } }
.stage { position: relative; aspect-ratio: 16 / 9; overflow: hidden; border: 1px solid var(--rule); background: var(--panel); margin-bottom: 1rem; --pos: 50%; }
.stage .art.base { background: var(--panel); }
.stage .art.top { background: var(--paper); clip-path: inset(0 calc(100% - var(--pos)) 0 0); }
.cmp-line { position: absolute; top: 0; bottom: 0; left: var(--pos); width: 2px; margin-left: -1px; background: var(--ink); z-index: 3; pointer-events: none; }
.cmp-knob {
  position: absolute; top: 50%; left: 50%; width: 2.25rem; height: 2.25rem; margin: -1.125rem 0 0 -1.125rem;
  background: var(--paper); border: 2px solid var(--ink); border-radius: 50%;
}
.cmp-knob::before, .cmp-knob::after {
  content: ""; position: absolute; top: 50%; width: 0; height: 0; margin-top: -5px;
  border: 5px solid transparent;
}
.cmp-knob::before { left: 4px; border-right-color: var(--ink); border-left-width: 0; }
.cmp-knob::after { right: 4px; border-left-color: var(--ink); border-right-width: 0; }
.tag {
  position: absolute; top: 0.6rem; z-index: 4; padding: 0.15rem 0.5rem; background: var(--paper);
  border: 1px solid var(--rule); font: 0.78rem var(--mono);
}
.tag.tl { left: 0.6rem; }
.tag.tr { right: 0.6rem; }
.cmp-range { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; z-index: 5; }
.stage:focus-within { outline: 3px solid var(--focus); outline-offset: 2px; }

/* Shot list */
.shots { margin: 0; display: grid; gap: 0; border-top: 1px solid var(--ink); }
.shots > div { display: grid; gap: 0.15rem; padding: 0.95rem 0; border-bottom: 1px solid var(--rule); }
@media (min-width: 40rem) { .shots > div { grid-template-columns: 11rem 1fr; gap: 1.5rem; } }
.shots dt { font-weight: 700; }
.shots dd { margin: 0; color: var(--muted); }

/* Services */
.rows { margin-top: 2rem; border-top: 1px solid var(--ink); }
.row { display: grid; gap: 1rem; padding: 1.6rem 0; border-bottom: 1px solid var(--rule); }
.row.rec { border-left: 5px solid var(--contour); padding-left: 1.1rem; background: var(--panel); }
.rowhead { display: grid; gap: 0.35rem; justify-items: start; }
.rowhead .btn { margin-top: 0.5rem; }
.row h3 { font-size: 1.3rem; }
.flag { margin: 0; font: 700 0.8rem var(--mono); color: var(--contour); }
.who { margin: 0; color: var(--muted); }
.price { margin: 0; font-family: var(--mono); }
.price span { font-size: 1.5rem; font-weight: 700; }
.price small { font-size: 0.82rem; color: var(--muted); }
.incl { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.incl li { position: relative; padding-left: 1.5rem; }
.incl li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 0.7rem; height: 0.4rem; border-left: 2px solid var(--contour); border-bottom: 2px solid var(--contour); transform: rotate(-45deg); }
@media (min-width: 52rem) {
  .row { grid-template-columns: 5fr 7fr; gap: 3rem; align-items: start; }
  .row.rec { padding-right: 1.1rem; }
}
.addon { margin: 1.2rem 0 0; color: var(--muted); }
.promise { margin: 2rem 0 1.2rem; padding: 1.2rem 1.3rem; border: 1px dashed var(--contour); max-width: 46rem; }
.promise h3 { font-size: 1.1rem; margin-bottom: 0.35rem; }
.promise p { margin: 0; }

/* FAQ */
.faq { border-top: 1px solid var(--ink); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary {
  list-style: none; cursor: pointer; padding: 1rem 2.2rem 1rem 0; position: relative; font-weight: 650;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 0.3rem; top: 0.85rem; font: 400 1.4rem/1 var(--mono); color: var(--contour);
}
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 0 0 1.1rem; color: var(--muted); max-width: 40rem; }

/* Process */
.steps { list-style: none; margin: 2.2rem 0 0; padding: 0; display: grid; gap: 1.6rem; counter-reset: none; }
.steps li { position: relative; padding-top: 1rem; border-top: 1px solid var(--ink); }
.steps .n { display: block; font: 700 0.9rem var(--mono); color: var(--contour); margin-bottom: 0.35rem; }
.steps h3 { font-size: 1.15rem; margin-bottom: 0.35rem; }
.steps p { margin: 0; color: var(--muted); }
@media (min-width: 52rem) { .steps { grid-template-columns: repeat(4, 1fr); gap: 2rem; } }

/* About */
.prose p { max-width: 38rem; }
.claims { list-style: none; margin: 1.2rem 0; padding: 0; display: grid; gap: 0.4rem; }
.claims li:not([hidden]) { padding-left: 1.5rem; position: relative; font-weight: 600; }
.claims li:not([hidden])::before { content: ""; position: absolute; left: 0; top: 0.6em; width: 0.8rem; height: 2px; background: var(--contour); }
.headshot { margin: 2rem 0 0; max-width: 16rem; }
.headshot img, .headshot-ph { display: block; width: 100%; height: auto; border: 1px solid var(--rule); border-radius: 0; }
.headshot-ph { aspect-ratio: 4 / 5; display: grid; place-items: center; background: var(--panel); }
.headshot figcaption { margin-top: 0.5rem; font: 0.8rem/1.3 var(--mono); color: var(--muted); }
.status { font: 0.9rem/1.5 var(--mono); color: var(--muted); padding: 0.8rem 1rem; border: 1px dashed var(--field); max-width: 38rem; }

/* Form */
.book { background: var(--panel); }
.now { font: 700 0.95rem/1.4 var(--mono); color: var(--contour); margin-top: 1.2rem; }
.form { display: grid; gap: 1rem; max-width: 34rem; }
.field { display: grid; gap: 0.3rem; }
.field label { font-weight: 650; font-size: 0.93rem; }
.opt { font-weight: 400; color: var(--muted); }
input, select, textarea {
  font: inherit; color: inherit; background: var(--paper);
  border: 1px solid var(--field); border-radius: 2px; padding: 0.65rem 0.75rem; min-height: 2.75rem; width: 100%;
}
textarea { resize: vertical; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.submit { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }
.reassure { margin: 0; font-size: 0.9rem; color: var(--muted); flex-basis: 100%; }
.form-status { margin: 0; font-size: 0.95rem; flex-basis: 100%; }
.form-status.ok { color: var(--ink); font-weight: 650; }
.form-status.err { color: var(--mark); font-weight: 650; }

/* Footer */
.site-foot { padding: 2.5rem 0 3rem; border-top: 1px solid var(--ink); font-size: 0.93rem; }
.foot-top { display: grid; gap: 0.2rem; margin-bottom: 1.5rem; }
.foot-top p { margin: 0; color: var(--muted); }
.foot-top .brand-foot { font-weight: 750; font-size: 1.1rem; color: var(--ink); }
@media (min-width: 52rem) { .foot-top { grid-template-columns: 1fr 2fr auto; gap: 2rem; align-items: baseline; } }
.legal { border-top: 1px solid var(--rule); padding-top: 1.2rem; max-width: 52rem; }
.legal p { font-size: 0.85rem; color: var(--muted); margin-bottom: 0.6rem; }

/* 404 page */
.notfound { padding: 6rem 0; }
.notfound h1 { font-size: clamp(2rem, 5vw, 3rem); }

@media (prefers-reduced-motion: reduce) {
  .hero .art { transition: none; transform: none; }
}
@media print {
  .site, .skip, .cta, .form { display: none; }
}