/* Aerial Ecology site styles
   Layout concept: a drone's-eye instrument panel. Dark field-at-dusk ground, thermal "ironbow" accent,
   monospace telemetry labels for data, generous editorial spacing for reading.
   Brand tokens below are placeholders until the official logo colours are supplied. */
:root {
  /* Brand colours from the Aerial Ecology logo: teal #0b5d5d, orange #f39200, amber #f9b233 */
  --bg: #081110;          /* teal-black ground */
  --bg-2: #0c1a19;        /* raised band */
  --panel: #112524;       /* cards, frames */
  --line: #1d3634;        /* hairlines */
  --text: #ecf3f1;
  --muted: #9cb2ae;
  --accent: #f39200;      /* brand orange */
  --accent-ink: #1a0d00;  /* text on accent */
  --amber: #f9b233;       /* brand amber, contour lines */
  --teal: #0b5d5d;        /* brand teal */
  --accent-2: #4fb8ad;    /* brand teal, lifted for dark backgrounds */
  --ironbow: linear-gradient(90deg, var(--teal) 0%, #2a8a86 30%, var(--accent) 70%, var(--amber) 100%);
  --radius: 14px;
  --max: 1200px;
  --gutter: 24px;
  --font-head: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 17px/1.65 var(--font-body); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: var(--accent); color: var(--accent-ink); padding: 8px 14px; border-radius: 8px; }

.wrap { max-width: var(--max); margin: 0 auto; padding-left: max(var(--gutter), env(safe-area-inset-left, 0px)); padding-right: max(var(--gutter), env(safe-area-inset-right, 0px)); }
.narrow { max-width: 760px; }

/* Type */
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 600; letter-spacing: -.025em; line-height: 1.1; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(38px, 5.8vw, 76px); }
h2 { font-size: clamp(28px, 3.6vw, 46px); }
h3 { font-size: 21px; letter-spacing: -.01em; line-height: 1.25; }
h4 { font-size: 17px; letter-spacing: 0; }
p { margin: 0; }
.lead { color: var(--muted); font-size: 19px; max-width: 62ch; }
.muted { color: var(--muted); }
.hot { color: var(--accent); }
.label { font-family: var(--font-mono); font-size: 12px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.label .dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); margin-right: 9px; vertical-align: 1px; box-shadow: 0 0 10px var(--accent); }
.stack { display: grid; gap: 18px; }
.stack-lg { display: grid; gap: 28px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 13px 22px; border-radius: 999px; background: var(--accent); color: var(--accent-ink); font: 600 15px/1 var(--font-body); text-decoration: none; border: 0; cursor: pointer; transition: transform .2s, box-shadow .2s; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 30px rgba(243,146,0,.35); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.ghost:hover { border-color: var(--muted); box-shadow: none; }
.actions { display: flex; gap: 14px; flex-wrap: wrap; }
.textlink { font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); text-decoration: none; }
.textlink:hover { text-decoration: underline; }

/* Header */
header.site { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px); background: rgba(8,17,16,.82); border-bottom: 1px solid var(--line); }
header.site::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: var(--ironbow); opacity: .7; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 78px; }
.logo { display: flex; align-items: center; gap: 11px; text-decoration: none; font-family: var(--font-head); font-weight: 600; font-size: 18px; letter-spacing: -.01em; }
.logo img { height: 52px; width: auto; }
.logo-lg img { height: 72px; }
.menu { display: flex; align-items: center; gap: 28px; list-style: none; margin: 0; padding: 0; }
.menu > li { position: relative; }
.menu a, .menu .drop-btn { text-decoration: none; font-size: 15px; color: var(--muted); background: none; border: 0; font-family: inherit; cursor: pointer; padding: 6px 0; transition: color .2s; }
.menu a:hover, .menu .drop-btn:hover, .menu a[aria-current="page"] { color: var(--text); }
.menu a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }
.sub { position: absolute; top: calc(100% + 10px); left: -16px; min-width: 260px; list-style: none; margin: 0; padding: 8px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 18px 40px rgba(0,0,0,.4); opacity: 0; visibility: hidden; transform: translateY(-4px); transition: .18s; }
.has-sub:hover .sub, .has-sub:focus-within .sub { opacity: 1; visibility: visible; transform: none; }
.sub a { display: block; padding: 10px 12px; border-radius: 8px; color: var(--text); }
.sub a:hover { background: var(--bg-2); }
.sub small { display: block; color: var(--muted); font-size: 13px; }
.menu-toggle { display: none; background: none; border: 1px solid var(--line); color: var(--text); border-radius: 10px; padding: 8px 14px; font: 500 15px var(--font-body); cursor: pointer; }

/* Sections */
section { padding-block: 112px; }
.band { background: var(--bg-2); border-block: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 32px 56px; margin-bottom: 52px; flex-wrap: wrap; }
.section-head > div { display: grid; gap: 16px; max-width: 640px; }
.section-head .lead { max-width: 46ch; }

/* Hero */
.hero { position: relative; padding-block: 150px 64px; overflow: hidden; isolation: isolate; }
.hero-bg { position: absolute; inset: 0; z-index: -2; background-position: center; background-size: cover; }
.hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(8,17,16,.45) 0%, rgba(8,17,16,.6) 50%, var(--bg) 100%); }
.grid-overlay { position: absolute; inset: 0; z-index: -1; background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(180deg, transparent, #000 25%, #000 70%, transparent); }
.reticle { position: absolute; right: 9%; top: 150px; width: 168px; height: 168px; border: 1px solid rgba(243,146,0,.75); border-radius: 50%; animation: drift 9s ease-in-out infinite alternate; }
.reticle::before, .reticle::after { content: ""; position: absolute; background: rgba(243,146,0,.75); }
.reticle::before { left: 50%; top: -22px; bottom: -22px; width: 1px; }
.reticle::after { top: 50%; left: -22px; right: -22px; height: 1px; }
.reticle span { position: absolute; top: calc(100% + 32px); left: 50%; transform: translateX(-50%); white-space: nowrap; }
@keyframes drift { from { transform: translate(0,0); } to { transform: translate(-26px, 18px); } }
.hero h1 { max-width: 16ch; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, var(--accent), var(--amber)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .stack-lg { max-width: 780px; }
.telemetry { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 64px; border-top: 1px solid var(--line); }
.telemetry div { padding: 18px 16px 0 0; display: grid; gap: 4px; }
.telemetry b { font-family: var(--font-head); font-weight: 500; font-size: 19px; }

/* Page hero (inner pages) */
.page-hero { padding-block: 128px 72px; position: relative; overflow: hidden; isolation: isolate; }
.page-hero.has-img { padding-block: 180px 80px; }
.page-hero .stack-lg { max-width: 820px; }
.crumbs { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.crumbs a { text-decoration: none; } .crumbs a:hover { color: var(--text); }

/* Services grid */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.service { background: var(--bg); padding: 32px 28px 30px; display: flex; flex-direction: column; gap: 12px; text-decoration: none; transition: background .25s; min-width: 0; }
.service:hover { background: var(--bg-2); }
.service .icon { width: 36px; height: 36px; color: var(--accent); }
.service p { color: var(--muted); font-size: 15.5px; }
.service .textlink { margin-top: auto; padding-top: 8px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags span { font-family: var(--font-mono); font-size: 11px; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px; }

/* Split feature */
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; }
.split.rev > :first-child { order: 2; }
.split > * { min-width: 0; }
.frame { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); aspect-ratio: 4/3; max-width: 100%; background: var(--panel); }
.frame img { width: 100%; height: 100%; object-fit: cover; }
.frame .hud { position: absolute; left: 14px; right: 14px; display: flex; justify-content: space-between; gap: 12px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; color: #fff; text-shadow: 0 1px 4px rgba(0,0,0,.7); }
.frame .hud.top { top: 12px; } .frame .hud.bottom { bottom: 12px; }
.frame .rec::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #ff3b30; margin-right: 6px; animation: blink 1.6s steps(2) infinite; }
@keyframes blink { 50% { opacity: .2; } }
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.checklist li { display: grid; grid-template-columns: 22px 1fr; gap: 12px; color: var(--muted); }
.checklist li::before { content: ""; width: 14px; height: 14px; margin-top: 6px; border: 1.5px solid var(--accent-2); border-radius: 3px; background: linear-gradient(var(--accent-2), var(--accent-2)) center/6px 6px no-repeat; }
.checklist strong { color: var(--text); font-weight: 500; }

/* Case cards */
.cases { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.case { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); min-height: 470px; display: flex; align-items: flex-end; text-decoration: none; isolation: isolate; background: var(--panel); }
.case img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform .6s ease; }
.case::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(8,17,16,.05) 25%, rgba(8,17,16,.95)); }
.case:hover img { transform: scale(1.04); }
.case-body { padding: 32px; display: grid; gap: 10px; }
.case-body h3 { font-size: 27px; }
.case-body p { color: var(--muted); max-width: 46ch; }
.badge { justify-self: start; font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-ink); background: var(--accent); padding: 4px 10px; border-radius: 999px; }

/* Process */
.process { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border-top: 1px solid var(--line); counter-reset: step; }
.process li { padding: 26px 22px 0 0; display: grid; gap: 10px; align-content: start; position: relative; min-width: 0; }
.process li::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--font-mono); font-size: 13px; color: var(--accent); }
.process li::after { content: ""; position: absolute; top: -4px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.process p { color: var(--muted); font-size: 15px; }
.process.three { grid-template-columns: repeat(3, 1fr); }

/* Media */
.media { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); aspect-ratio: 16/9; max-width: 100%; background: var(--panel); }
.media.wide { aspect-ratio: 16/8; }
.media iframe { width: 100%; height: 100%; border: 0; display: block; }
figure { margin: 0; display: grid; gap: 12px; }
figcaption { font-size: 14px; color: var(--muted); }

/* Prose (case studies, services detail) */
.prose { display: grid; gap: 20px; max-width: 68ch; }
.prose p, .prose li { color: #c9d4d1; }
.prose ul { margin: 0; padding-left: 20px; display: grid; gap: 8px; }
.prose h2 { margin-top: 28px; font-size: clamp(26px, 3vw, 36px); }
.prose h3 { margin-top: 10px; }
.callout { border: 1px solid var(--line); border-left: 3px solid var(--accent); background: var(--bg-2); border-radius: 0 var(--radius) var(--radius) 0; padding: 22px 24px; display: grid; gap: 8px; }
.callout p { color: var(--muted); }
.specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.specs div { background: var(--bg-2); padding: 20px 22px; display: grid; gap: 4px; }
.specs b { font-family: var(--font-head); font-weight: 500; font-size: 18px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.two-col > * { min-width: 0; }
.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.services.three { grid-template-columns: repeat(3, 1fr); }
.trio > * { min-width: 0; }
.work-group { margin-top: 56px; }
.work-group:first-child { margin-top: 0; }
.note { font-size: 14px; color: var(--muted); }
.card { border: 1px solid var(--line); background: var(--bg-2); border-radius: var(--radius); padding: 28px; display: grid; gap: 14px; align-content: start; }
.card p { color: var(--muted); }

/* Detail rows (services page) */
.detail { display: grid; grid-template-columns: 300px 1fr; gap: 56px; padding-block: 56px; border-top: 1px solid var(--line); scroll-margin-top: 90px; }
.detail:first-of-type { border-top: 0; }
.detail > * { min-width: 0; }
.detail aside { display: grid; gap: 16px; align-content: start; position: sticky; top: 100px; }
.detail aside img { border-radius: 10px; border: 1px solid var(--line); aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.detail .cols { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 8px; }

/* Team */
.team { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.person { display: grid; grid-template-columns: 170px 1fr; gap: 26px; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-2); }
.person > * { min-width: 0; }
.person img { width: 170px; height: 210px; object-fit: cover; border-radius: 10px; background: var(--panel); }
.person .role { color: var(--accent-2); font-size: 14px; }
.person p { color: var(--muted); font-size: 15.5px; }

/* CTA */
.cta { border-radius: 22px; overflow: hidden; border: 1px solid var(--line); padding: 76px 56px; display: grid; gap: 20px; justify-items: start; background: radial-gradient(800px 400px at 88% 15%, rgba(243,146,0,.22), transparent 60%), radial-gradient(700px 400px at 0% 100%, rgba(11,93,93,.45), transparent 60%), var(--bg-2); }
.cta h2 { max-width: 20ch; }

/* Form */
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
.field { display: grid; gap: 8px; min-width: 0; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 500; }
.field label .opt { color: var(--muted); font-weight: 400; }
.field input, .field select, .field textarea { width: 100%; font: 400 16px/1.4 var(--font-body); color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 13px 14px; transition: border-color .2s; }
.field textarea { min-height: 150px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(243,146,0,.18); }
.checks { display: flex; flex-wrap: wrap; gap: 8px; }
.checks label { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; font-size: 14px; font-weight: 400; cursor: pointer; }
.checks input { accent-color: var(--accent); }
.field input[type="checkbox"] { width: auto; padding: 0; flex: none; }
.checks label, .consent { white-space: normal; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--muted); }
.consent input { margin-top: 4px; accent-color: var(--accent); }
.form-status { grid-column: 1 / -1; font-size: 15px; }
.form-status.ok { color: var(--accent-2); } .form-status.err { color: #ff8f80; }
.contact-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; align-items: start; }
.contact-grid > * { min-width: 0; }
.info { display: grid; gap: 26px; }
.info div { display: grid; gap: 6px; }
.info address { font-style: normal; color: var(--muted); }

/* Footer */
footer.site { border-top: 1px solid var(--line); padding-block: 64px 48px; color: var(--muted); font-size: 14.5px; }
.foot { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.foot > * { min-width: 0; }
.foot h4 { color: var(--text); font-size: 14px; margin-bottom: 14px; font-family: var(--font-mono); font-weight: 500; letter-spacing: .12em; text-transform: uppercase; }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.foot a { text-decoration: none; } .foot a:hover { color: var(--text); }
.foot address { font-style: normal; line-height: 1.7; }
.legal { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; }

/* Responsive */
@media (max-width: 1020px) {
  .process { grid-template-columns: 1fr 1fr; row-gap: 28px; }
  .foot { grid-template-columns: 1fr 1fr; }
  .detail { grid-template-columns: 1fr; gap: 28px; }
  .detail aside { position: static; }
}
@media (max-width: 900px) {
  .menu, .nav > .btn { display: none; }
  .menu-toggle { display: block; }
  .nav.open .menu { display: grid; gap: 4px; position: absolute; top: 78px; left: 0; right: 0; background: var(--bg); padding: 16px max(var(--gutter), env(safe-area-inset-left, 0px)) 24px; border-bottom: 1px solid var(--line); }
  .nav.open .menu a, .nav.open .menu .drop-btn { font-size: 17px; padding: 10px 0; display: block; }
  .nav.open .sub { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; background: none; padding: 0 0 0 14px; min-width: 0; }
  .nav.open .sub small { display: none; }
  .services, .services.three, .trio, .cases, .team, .split, .two-col, .contact-grid, .specs, .detail .cols { grid-template-columns: 1fr; }
  .split.rev > :first-child { order: 0; }
  .telemetry { grid-template-columns: 1fr 1fr; row-gap: 18px; }
  .reticle { display: none; }
  section { padding-block: 76px; }
  .hero { padding-block: 120px 48px; }
  .page-hero, .page-hero.has-img { padding-block: 100px 48px; }
  .person { grid-template-columns: 1fr; } .person img { width: 100%; height: 300px; }
  .cta { padding: 44px 24px; }
  .form { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  :root { --gutter: 16px; }
  .process, .process.three, .foot { grid-template-columns: 1fr; }
  .case { min-height: 400px; }
  .case-body { padding: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
.form .note { grid-column: 1 / -1; margin: 0; }
.form-status:focus { outline: none; }
.form.sent > :not(.form-status) { display: none; }
.form.sent .form-status { grid-column: 1 / -1; font-size: 18px; padding: 8px 0; }
.form.sent .form-status strong { display: block; font-family: var(--font-head, inherit); font-size: 24px; color: var(--text); margin-bottom: 6px; }