/* heywhatsabove.com: "Hey, what's above?" design system
   Sky by day, starfield by night. Mobile-first, system fonts, no build. */

:root {
  --font: ui-rounded, "SF Pro Rounded", "Nunito", "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;

  --sky-1: #2d8cff;
  --sky-2: #6cc3ff;
  --sky-3: #d9f0ff;
  --sun: #ffb23e;
  --coral: #ff6b4a;
  --coral-ink: #c43d1f;
  --mint: #19b37b;
  --berry: #d6336c;

  --bg: #f4f9ff;
  --bg-2: #e9f3ff;
  --surface: #ffffff;
  --surface-2: #f3f8fe;
  --ink: #0f2140;
  --ink-2: #3c4f6e;
  --ink-3: #5d6f8c;
  --line: #d6e3f3;
  --link: #0b63ce;
  --focus: #ff8a3d;
  --shadow: 0 1px 2px rgba(16, 42, 84, .06), 0 8px 24px rgba(16, 42, 84, .08);
  --shadow-lg: 0 2px 6px rgba(16, 42, 84, .08), 0 24px 60px rgba(16, 42, 84, .16);
  --hero-grad: linear-gradient(180deg, #3b95ff 0%, #78c6ff 55%, #cdeaff 100%);
  --hero-ink: #ffffff;
  --radar-bg: radial-gradient(circle at 50% 50%, #e7f5ff 0%, #c6e6ff 62%, #a9d6ff 100%);
  --radar-line: rgba(18, 74, 150, .22);
  --radar-ink: #0f3b78;
  --blip: #ff6b4a;
  --blip-2: #0f3b78;
  --ok: #0f8a5f;
  --warn: #a35a00;
  --bad: #c22b2b;
  --radius: 18px;
  --radius-sm: 12px;
  --maxw: 1160px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #070e22;
    --bg-2: #0b1530;
    --surface: #101c3b;
    --surface-2: #142347;
    --ink: #eef4ff;
    --ink-2: #c3d0e8;
    --ink-3: #93a4c4;
    --line: #22335e;
    --link: #8cc3ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35);
    --shadow-lg: 0 2px 6px rgba(0, 0, 0, .35), 0 24px 60px rgba(0, 0, 0, .5);
    --hero-grad: linear-gradient(180deg, #050a1c 0%, #0c1a45 60%, #1d2f6b 100%);
    --radar-bg: radial-gradient(circle at 50% 50%, #17295a 0%, #0e1c42 65%, #0a1534 100%);
    --radar-line: rgba(160, 200, 255, .2);
    --radar-ink: #bcd6ff;
    --blip: #ff8a6b;
    --blip-2: #bcd6ff;
    --ok: #3ddc97;
    --warn: #ffb547;
    --bad: #ff7a7a;
    --coral-ink: #ff9d85;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #070e22;
  --bg-2: #0b1530;
  --surface: #101c3b;
  --surface-2: #142347;
  --ink: #eef4ff;
  --ink-2: #c3d0e8;
  --ink-3: #93a4c4;
  --line: #22335e;
  --link: #8cc3ff;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35);
  --shadow-lg: 0 2px 6px rgba(0, 0, 0, .35), 0 24px 60px rgba(0, 0, 0, .5);
  --hero-grad: linear-gradient(180deg, #050a1c 0%, #0c1a45 60%, #1d2f6b 100%);
  --radar-bg: radial-gradient(circle at 50% 50%, #17295a 0%, #0e1c42 65%, #0a1534 100%);
  --radar-line: rgba(160, 200, 255, .2);
  --radar-ink: #bcd6ff;
  --blip: #ff8a6b;
  --blip-2: #bcd6ff;
  --ok: #3ddc97;
  --warn: #ffb547;
  --bad: #ff7a7a;
  --coral-ink: #ff9d85;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 72px; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { max-width: 100%; }
img { height: auto; }
a { color: var(--link); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 6px; }
h1, h2, h3, h4 { font-family: var(--font); line-height: 1.2; letter-spacing: -.01em; margin: 1.6em 0 .5em; }
h1 { font-size: clamp(2rem, 6.4vw, 3.4rem); letter-spacing: -.02em; margin-top: 0; }
h2 { font-size: clamp(1.45rem, 3.6vw, 2rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.3em; }
li { margin: .25em 0; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { text-align: left; padding: .5em .6em; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--font); }
code, kbd { font-family: var(--mono); font-size: .9em; background: var(--surface-2); padding: .1em .35em; border-radius: 6px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 8px; top: -60px; z-index: 100; background: var(--surface); color: var(--ink); padding: 10px 14px; border-radius: 10px; box-shadow: var(--shadow); }
.skip:focus { top: 8px; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
.muted { color: var(--ink-3); }
.small { font-size: .88rem; }
.center { text-align: center; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}
.site-header .wrap { display: flex; align-items: center; gap: 12px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); text-decoration: none; font-family: var(--font); font-weight: 800; font-size: 1.08rem; letter-spacing: -.01em; white-space: nowrap; }
.brand svg { width: 34px; height: 34px; flex: none; }
.brand .q { color: var(--coral); }
.nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav a { color: var(--ink-2); text-decoration: none; font-family: var(--font); font-weight: 650; font-size: .95rem; padding: 8px 10px; border-radius: 10px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); background: var(--surface-2); }
.nav .pro-link { color: var(--coral-ink); }
.icon-btn { appearance: none; border: 1px solid var(--line); background: var(--surface); color: var(--ink); width: 40px; height: 40px; border-radius: 12px; display: inline-grid; place-items: center; cursor: pointer; flex: none; }
.icon-btn svg { width: 20px; height: 20px; }
.menu-btn { display: none; }
@media (max-width: 820px) {
  .menu-btn { display: inline-grid; margin-left: auto; }
  .nav { display: none; position: absolute; top: 60px; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--line); box-shadow: var(--shadow); flex-direction: column; align-items: stretch; padding: 8px 12px 14px; gap: 2px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px; font-size: 1.05rem; }
}

/* ---------- Buttons & inputs ---------- */
.btn {
  appearance: none; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 10px 18px; border-radius: 14px; border: 1px solid transparent;
  font-family: var(--font); font-weight: 750; font-size: 1rem; line-height: 1.1;
  text-decoration: none; cursor: pointer; transition: transform .12s ease, box-shadow .12s ease, background .12s;
  -webkit-tap-highlight-color: transparent;
}
.btn svg { width: 20px; height: 20px; flex: none; }
.btn:active { transform: translateY(1px) scale(.99); }
.btn-primary { background: var(--coral); color: #fff; box-shadow: 0 6px 18px rgba(255, 107, 74, .35); }
.btn-primary:hover { background: #ff5a35; }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-sky { background: #0f3b78; color: #fff; }
.btn-sm { min-height: 38px; padding: 7px 12px; font-size: .92rem; border-radius: 11px; }
.btn[disabled] { opacity: .6; cursor: progress; }
input[type="text"], input[type="email"], input[type="search"], select {
  font: inherit; font-size: 16px; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; min-height: 46px; width: 100%;
}
input:focus-visible, select:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; }

/* ---------- Hero / sky ---------- */
.sky-hero {
  position: relative; isolation: isolate; overflow: hidden;
  background: var(--hero-grad); color: var(--hero-ink);
  padding: 28px 0 120px;
}
.sky-hero::before { /* clouds by day, stars by night */
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60px 26px at 12% 30%, rgba(255,255,255,.75), transparent 70%),
    radial-gradient(90px 34px at 18% 34%, rgba(255,255,255,.6), transparent 70%),
    radial-gradient(80px 30px at 78% 18%, rgba(255,255,255,.7), transparent 70%),
    radial-gradient(120px 40px at 86% 23%, rgba(255,255,255,.5), transparent 70%),
    radial-gradient(70px 24px at 60% 70%, rgba(255,255,255,.35), transparent 70%);
}
:root[data-theme="dark"] .sky-hero::before,
.sky-hero.night::before {
  background-image:
    radial-gradient(1.5px 1.5px at 10% 20%, #fff, transparent),
    radial-gradient(1px 1px at 25% 65%, #cfe0ff, transparent),
    radial-gradient(1.5px 1.5px at 40% 12%, #fff, transparent),
    radial-gradient(1px 1px at 55% 40%, #fff, transparent),
    radial-gradient(2px 2px at 70% 22%, #fff7d6, transparent),
    radial-gradient(1px 1px at 82% 55%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 92% 12%, #cfe0ff, transparent),
    radial-gradient(1px 1px at 5% 80%, #fff, transparent),
    radial-gradient(1px 1px at 65% 85%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 33% 35%, #fff, transparent);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .sky-hero::before {
    background-image:
      radial-gradient(1.5px 1.5px at 10% 20%, #fff, transparent),
      radial-gradient(1px 1px at 25% 65%, #cfe0ff, transparent),
      radial-gradient(1.5px 1.5px at 40% 12%, #fff, transparent),
      radial-gradient(1px 1px at 55% 40%, #fff, transparent),
      radial-gradient(2px 2px at 70% 22%, #fff7d6, transparent),
      radial-gradient(1px 1px at 82% 55%, #fff, transparent),
      radial-gradient(1.5px 1.5px at 92% 12%, #cfe0ff, transparent),
      radial-gradient(1px 1px at 5% 80%, #fff, transparent),
      radial-gradient(1px 1px at 65% 85%, #fff, transparent),
      radial-gradient(1.5px 1.5px at 33% 35%, #fff, transparent);
  }
}
.sky-hero::after { /* horizon hills */
  content: ""; position: absolute; left: -5%; right: -5%; bottom: -1px; height: 90px; z-index: -1;
  background: var(--bg);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
}
.sky-hero h1 { color: var(--hero-ink); text-shadow: 0 2px 18px rgba(8, 40, 100, .25); max-width: 16ch; margin-bottom: .25em; }
.sky-hero .lede { font-size: clamp(1.05rem, 2.6vw, 1.25rem); max-width: 42ch; opacity: .96; margin-bottom: 1.1em; }
.sky-hero a { color: #fff; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font); font-weight: 750; font-size: .85rem; letter-spacing: .04em; text-transform: uppercase; background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.3); padding: 5px 11px; border-radius: 999px; margin-bottom: 14px; }
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: #3dff9e; box-shadow: 0 0 0 0 rgba(61,255,158,.7); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(61,255,158,.6); } 70% { box-shadow: 0 0 0 10px rgba(61,255,158,0); } 100% { box-shadow: 0 0 0 0 rgba(61,255,158,0); } }
.breadcrumbs { font-size: .88rem; margin: 0 0 14px; }
.breadcrumbs ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 4px; }
.breadcrumbs li { margin: 0; }
.breadcrumbs li + li::before { content: "›"; margin: 0 6px 0 2px; opacity: .7; }
.sky-hero .breadcrumbs a { color: #fff; }
.page-hero { padding: 24px 0 72px; }
.page-hero + .wrap.section, .page-hero + .pro { padding-top: 8px; }
.page-hero h1 { max-width: 22ch; }

/* ---------- Location bar ---------- */
.locbar { display: grid; gap: 10px; grid-template-columns: 1fr; max-width: 720px; }
.locbar .row { display: flex; gap: 8px; flex-wrap: wrap; }
.locbar .row .btn { flex: 1 1 auto; }
.place-search { position: relative; }
.place-search input { padding-left: 40px; background: rgba(255,255,255,.96); color: #0f2140; border-color: transparent; box-shadow: var(--shadow); }
.place-search svg { position: absolute; left: 12px; top: 13px; width: 20px; height: 20px; color: #5d6f8c; pointer-events: none; }
.place-results { position: absolute; z-index: 30; left: 0; right: 0; top: calc(100% + 6px); background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-lg); max-height: 320px; overflow: auto; margin: 0; padding: 6px; list-style: none; }
.place-results li { margin: 0; }
.place-results button { all: unset; box-sizing: border-box; display: flex; width: 100%; gap: 10px; align-items: baseline; padding: 10px 12px; border-radius: 10px; cursor: pointer; }
.place-results button:hover, .place-results button[aria-selected="true"] { background: var(--surface-2); }
.place-results .code { font-family: var(--mono); font-size: .85rem; color: var(--ink-3); margin-left: auto; }
.loc-status { font-size: .95rem; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; min-height: 1.6em; }
.loc-status strong { font-family: var(--font); }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.35); font-size: .85rem; font-weight: 650; color: inherit; }
button.chip { cursor: pointer; font: inherit; font-size: .85rem; font-weight: 650; }

/* ---------- Tool layout ---------- */
.tool { margin-top: -96px; position: relative; z-index: 2; }
.tool-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 900px) {
  .tool-grid { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); align-items: start; }
  .tool-grid .span-2 { grid-column: 1 / -1; }
}
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; min-width: 0; }
.card h2, .card h3 { margin-top: 0; }
.card-title { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.card-title h2 { font-size: 1.15rem; margin: 0; }
.status-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: .9rem; color: var(--ink-3); }
.status-bar .live { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; color: var(--ok); }
.status-bar .live::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.status-bar .live.paused { color: var(--warn); }
.status-bar .live.err { color: var(--bad); }
.status-bar .spacer { flex: 1; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--surface-2); }
.seg button { all: unset; cursor: pointer; padding: 6px 10px; font-size: .85rem; font-weight: 700; color: var(--ink-2); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--surface); }
.seg button:focus-visible { outline: 3px solid var(--focus); outline-offset: -3px; }

/* Closest-aircraft hero card */
.closest { position: relative; overflow: hidden; background: linear-gradient(135deg, #0f3b78 0%, #1b5fbf 55%, #3a8bff 100%); color: #fff; border: 0; }
:root[data-theme="dark"] .closest { background: linear-gradient(135deg, #1a2a5e 0%, #233a85 60%, #2f58c7 100%); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .closest { background: linear-gradient(135deg, #1a2a5e 0%, #233a85 60%, #2f58c7 100%); } }
.closest .label { font-family: var(--font); font-weight: 750; text-transform: uppercase; letter-spacing: .06em; font-size: .78rem; opacity: .85; }
.closest .callsign { font-family: var(--font); font-weight: 850; font-size: clamp(2rem, 9vw, 3rem); line-height: 1; margin: 6px 0 4px; letter-spacing: -.02em; }
.closest .what { font-size: 1.08rem; opacity: .95; margin: 0 0 12px; }
.closest .look { display: flex; align-items: center; gap: 14px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); border-radius: 16px; padding: 12px 14px; margin-bottom: 12px; }
.closest .look .arrow { width: 56px; height: 56px; flex: none; }
.closest .look .txt { font-family: var(--font); font-weight: 800; font-size: 1.35rem; line-height: 1.15; }
.closest .look .sub { font-size: .9rem; opacity: .85; font-weight: 500; font-family: var(--font-body); }
.closest .stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 0 0 14px; }
.closest .stats div { background: rgba(255,255,255,.1); border-radius: 12px; padding: 8px 10px; }
.closest .stats dt { font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; opacity: .8; }
.closest .stats dd { margin: 0; font-family: var(--font); font-weight: 800; font-size: 1.05rem; white-space: nowrap; }
.closest .actions { display: flex; gap: 8px; flex-wrap: wrap; }
.closest .actions .btn-ghost { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.3); }
.closest a { color: #fff; }
.closest .plane-bg { position: absolute; right: -30px; top: -10px; width: 180px; opacity: .1; transform: rotate(35deg); pointer-events: none; }
.closest.empty .callsign { font-size: 1.7rem; }

/* Sky view (polar compass) */
.skyview-wrap { position: relative; max-width: 440px; margin: 0 auto; }
.skyview { width: 100%; height: auto; display: block; border-radius: 50%; background: var(--radar-bg); box-shadow: inset 0 0 0 1px var(--radar-line), var(--shadow); touch-action: manipulation; }
.skyview text { fill: var(--radar-ink); font-family: var(--font); font-weight: 800; }
.skyview .ring { fill: none; stroke: var(--radar-line); stroke-width: 1; }
.skyview .spoke { stroke: var(--radar-line); stroke-width: 1; }
.skyview .ring-label { font-size: 11px; font-weight: 700; opacity: .75; }
.skyview .blip { cursor: pointer; }
.skyview .blip circle.halo { fill: var(--blip); opacity: .18; }
.skyview .blip path { fill: var(--blip-2); }
.skyview .blip.closest path { fill: var(--blip); }
.skyview .blip.sel circle.halo { opacity: .45; }
.skyview .blip text { font-size: 11px; font-weight: 800; paint-order: stroke; stroke: var(--surface); stroke-width: 3px; }
.skyview .you { fill: var(--coral); }
.skyview-legend { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; font-size: .85rem; color: var(--ink-3); margin-top: 10px; }
.facing { font-size: .85rem; }

/* Aircraft list */
.ac-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.ac { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 12px; border-radius: 14px; background: var(--surface-2); border: 1px solid transparent; }
.ac.sel { border-color: var(--coral); }
.ac .ic { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--surface); border: 1px solid var(--line); }
.ac .ic svg { width: 26px; height: 26px; color: var(--ink); }
.ac .main { min-width: 0; }
.ac .top { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.ac .cs { font-family: var(--font); font-weight: 850; font-size: 1.08rem; color: var(--ink); text-decoration: none; }
.ac .cs:hover { text-decoration: underline; }
.ac .reg { font-family: var(--mono); font-size: .8rem; color: var(--ink-3); }
.ac .desc { font-size: .93rem; color: var(--ink-2); margin: 1px 0 3px; overflow-wrap: anywhere; }
.ac .desc a { color: inherit; }
.ac .meta { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: .84rem; color: var(--ink-3); }
.ac .meta b { color: var(--ink); font-weight: 700; }
.ac .side { text-align: right; font-size: .85rem; color: var(--ink-3); }
.ac .side .dist { font-family: var(--font); font-weight: 850; font-size: 1.1rem; color: var(--ink); display: block; white-space: nowrap; }
.ac .side .look { font-weight: 700; white-space: nowrap; }
.ac .ext { display: inline-block; margin-top: 4px; font-weight: 700; font-size: .82rem; white-space: nowrap; }
.vr-up { color: var(--ok); }
.vr-down { color: var(--coral-ink); }
.sq-alert { display: inline-block; background: var(--bad); color: #fff; font-weight: 800; font-size: .72rem; padding: 1px 6px; border-radius: 6px; }
.tag { display: inline-block; font-size: .72rem; font-weight: 800; letter-spacing: .03em; text-transform: uppercase; padding: 2px 7px; border-radius: 6px; background: var(--surface); border: 1px solid var(--line); color: var(--ink-2); }
.list-more { margin-top: 10px; }
.notice { padding: 14px 16px; border-radius: 14px; background: var(--surface-2); border: 1px dashed var(--line); color: var(--ink-2); }
.notice.err { border-color: color-mix(in srgb, var(--bad) 50%, transparent); }
.notice h3 { margin: 0 0 4px; font-size: 1.05rem; }
.skeleton { height: 64px; border-radius: 14px; background: linear-gradient(90deg, var(--surface-2), var(--bg-2), var(--surface-2)); background-size: 200% 100%; animation: shimmer 1.4s infinite; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* Map */
.map-card { padding: 0; overflow: hidden; }
.map-card .card-title { padding: 14px 16px 0; }
.map { height: 380px; width: 100%; background: var(--surface-2); }
@media (min-width: 900px) { .map { height: 460px; } }
.map-foot { display: flex; gap: 10px; align-items: center; justify-content: space-between; flex-wrap: wrap; padding: 10px 16px 14px; font-size: .88rem; }
.map-placeholder { display: grid; place-items: center; height: 100%; color: var(--ink-3); text-align: center; padding: 16px; }
.leaflet-container { font-family: var(--font-body); }
.ac-marker svg { display: block; filter: drop-shadow(0 1px 1.5px rgba(0,0,0,.45)); }
.ac-marker .p { fill: #0f3b78; stroke: #fff; stroke-width: 1.2; }
.ac-marker.is-closest .p { fill: #ff6b4a; }
.ac-marker.sel .p { fill: #ffb23e; }
.ac-marker.heli .p { fill: #7a3cc4; }
.ac-marker.mil .p { fill: #3f6b2a; }
.you-marker { width: 18px; height: 18px; border-radius: 50%; background: #ff6b4a; border: 3px solid #fff; box-shadow: 0 0 0 6px rgba(255,107,74,.25); }
.leaflet-popup-content { font-size: .9rem; line-height: 1.45; }
.leaflet-popup-content b { font-family: var(--font); }
.pick-hint { position: absolute; z-index: 500; left: 50%; top: 10px; transform: translateX(-50%); background: var(--ink); color: var(--surface); padding: 6px 12px; border-radius: 999px; font-size: .88rem; font-weight: 700; pointer-events: none; }

/* ---------- Content ---------- */
main { display: block; }
.section { padding-top: 40px; padding-bottom: 40px; }
.section-tight { padding-top: 24px; padding-bottom: 24px; }
.lead { font-size: 1.12rem; color: var(--ink-2); }
.answer { font-size: 1.12rem; background: var(--surface); border: 1px solid var(--line); border-left: 5px solid var(--sun); border-radius: var(--radius-sm); padding: 14px 16px; box-shadow: var(--shadow); margin: 0 0 1.4em; }
.answer p:last-child { margin-bottom: 0; }
.prose { max-width: 72ch; }
.prose h2 { padding-top: .2em; }
.prose img { border-radius: 12px; }
.prose table { margin: 1em 0 1.5em; display: block; overflow-x: auto; }
.layout { display: grid; gap: 32px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 1000px) { .layout { grid-template-columns: minmax(0, 1fr) 300px; } }
.aside { display: grid; gap: 16px; align-content: start; }
@media (min-width: 1000px) { .aside { position: sticky; top: 80px; } }
.aside .card h2 { font-size: 1.05rem; }
.aside ul { list-style: none; padding: 0; margin: 0; }
.aside li { margin: 0; border-top: 1px solid var(--line); }
.aside li:first-child { border-top: 0; }
.aside li a { display: block; padding: 8px 0; text-decoration: none; font-weight: 600; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); }
.grid.tight { grid-template-columns: repeat(auto-fill, minmax(min(100%, 170px), 1fr)); gap: 10px; }
.tile { display: block; text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); transition: transform .15s ease, box-shadow .15s ease; }
.tile:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.tile h3 { margin: 0 0 4px; font-size: 1.08rem; }
.tile p { margin: 0; color: var(--ink-3); font-size: .93rem; }
.tile .kicker { font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; font-weight: 800; color: var(--coral-ink); margin-bottom: 4px; display: block; }
.tile.compact { padding: 11px 13px; border-radius: 14px; }
.tile.compact h3 { font-size: 1rem; margin: 0; }
.tile.compact p { font-size: .83rem; }
.tile .ic { width: 38px; height: 38px; color: var(--sky-1); margin-bottom: 6px; }
.steps { counter-reset: s; list-style: none; padding: 0; display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); }
.steps li { counter-increment: s; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 16px 16px 60px; position: relative; margin: 0; box-shadow: var(--shadow); }
.steps li::before { content: counter(s); position: absolute; left: 16px; top: 16px; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: var(--sun); color: #3a2400; font-family: var(--font); font-weight: 850; }
.steps h3 { margin: 0 0 4px; font-size: 1.05rem; }
.steps p { margin: 0; color: var(--ink-2); font-size: .95rem; }
.spec { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 150px), 1fr)); gap: 10px; margin: 0 0 1.5em; padding: 0; }
.spec div { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 10px 12px; }
.spec dt { font-size: .76rem; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); font-weight: 750; }
.spec dd { margin: 0; font-family: var(--font); font-weight: 750; }
.airport-list { list-style: none; padding: 0; display: grid; gap: 10px; }
.airport-list li { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; }
.airport-list .code { font-family: var(--mono); font-weight: 700; color: var(--coral-ink); margin-right: 6px; }
.airport-list .kind { float: right; }
.faq-list details { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 0 16px; margin: 0 0 10px; }
.faq-list summary { cursor: pointer; font-family: var(--font); font-weight: 750; padding: 14px 0; list-style: none; display: flex; gap: 10px; justify-content: space-between; align-items: center; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--coral); flex: none; }
.faq-list details[open] summary::after { content: "–"; }
.faq-list .a { padding: 0 0 6px; color: var(--ink-2); }
.gloss dt { font-family: var(--font); font-weight: 800; font-size: 1.1rem; margin-top: 1.4em; scroll-margin-top: 80px; }
.gloss dt:target { color: var(--coral-ink); }
.gloss dd { margin: .3em 0 0; }
.gloss .see { font-size: .9rem; color: var(--ink-3); }
.az { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 1em; padding: 0; list-style: none; }
.az a { display: inline-grid; place-items: center; min-width: 34px; height: 34px; border-radius: 10px; background: var(--surface); border: 1px solid var(--line); text-decoration: none; font-weight: 800; font-family: var(--font); }
.lookalike { list-style: none; padding: 0; }
.lookalike li { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 10px 14px; margin: 0 0 8px; }
.meta-line { font-size: .9rem; color: var(--ink-3); margin-bottom: 1.2em; }
.cta-band { background: linear-gradient(135deg, #0f3b78, #2d8cff); color: #fff; border-radius: var(--radius); padding: 22px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between; box-shadow: var(--shadow-lg); }
.cta-band h2 { margin: 0 0 4px; font-size: 1.35rem; color: #fff; }
.cta-band p { margin: 0; opacity: .9; }
.cta-band .btn { background: #fff; color: #0f3b78; }
.apl-cta { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.apl-cta p { margin: 0; }
.apl-cta strong { font-family: var(--font); }

/* Pro */
.pro { background: linear-gradient(180deg, var(--bg-2), var(--bg)); border-top: 1px solid var(--line); }
.plans { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); margin: 18px 0; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 10px; }
.plan.featured { border: 2px solid var(--coral); }
.plan h3 { margin: 0; font-size: 1.2rem; }
.plan .price { font-family: var(--font); font-weight: 850; font-size: 2rem; line-height: 1; }
.plan .price small { font-size: .95rem; font-weight: 600; color: var(--ink-3); }
.plan ul { margin: 0; padding-left: 1.1em; color: var(--ink-2); font-size: .95rem; }
.plan .btn { margin-top: auto; }
.plan-msg { font-size: .92rem; margin: 0; }
.waitlist { display: flex; gap: 8px; flex-wrap: wrap; max-width: 520px; }
.waitlist input { flex: 1 1 220px; }
.form-msg { font-size: .92rem; min-height: 1.4em; margin: 8px 0 0; }
.form-msg.ok { color: var(--ok); }
.form-msg.err { color: var(--bad); }

/* Ads: collapse when empty */
.ad { margin: 24px auto; text-align: center; max-width: var(--maxw); padding: 0 16px; }
.ad:empty, [data-apl-slot]:empty { display: none; margin: 0; padding: 0; }
.ad-label { display: block; font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 4px; }

/* ---------- Footer ---------- */
.site-footer { margin-top: 48px; background: var(--bg-2); border-top: 1px solid var(--line); padding: 36px 0 28px; font-size: .95rem; }
.footer-grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 150px), 1fr)); }
.site-footer h2 { font-size: .85rem; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-3); margin: 0 0 8px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 0 0 6px; }
.site-footer a { color: var(--ink-2); text-decoration: none; }
.site-footer a:hover { color: var(--ink); text-decoration: underline; }
.network { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
.network strong { font-family: var(--font); }
.fineprint { margin-top: 16px; color: var(--ink-3); font-size: .85rem; }

/* 404 */
.lost { text-align: center; padding: 40px 0 10px; }
.lost svg { width: 160px; height: 160px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media print {
  .site-header, .site-footer, .ad, .tool, .pro { display: none !important; }
  .sky-hero { background: none; color: #000; }
}

/* ---------- refinements after live mobile testing ---------- */
[data-status] { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; }
.closest .vr-up { color: #9dffc9; }
.closest .vr-down { color: #ffd27a; }
.sky-hero { --hero-grad: linear-gradient(180deg, #1f78e6 0%, #3d97f5 55%, #74bdfb 88%, #a9d8ff 100%); }
:root[data-theme="dark"] .sky-hero { --hero-grad: linear-gradient(180deg, #050a1c 0%, #0c1a45 60%, #1d2f6b 100%); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .sky-hero { --hero-grad: linear-gradient(180deg, #050a1c 0%, #0c1a45 60%, #1d2f6b 100%); } }
.sky-hero .loc-status { text-shadow: 0 1px 8px rgba(8, 40, 100, .35); }
.ground-toggle { display: inline-flex; align-items: center; gap: 6px; font-size: .85rem; font-weight: 650; color: var(--ink-2); cursor: pointer; }
.ground-toggle input { width: 18px; height: 18px; accent-color: var(--coral); }
@media (max-width: 600px) {
  .sky-hero { padding-top: 18px; }
  .sky-hero h1 { font-size: 2.05rem; }
  .sky-hero .lede { font-size: 1rem; margin-bottom: .8em; }
  .eyebrow { font-size: .74rem; margin-bottom: 10px; }
  .locbar .row { display: grid; grid-template-columns: 1fr 1fr; }
  .locbar .row .btn { padding: 10px 8px; font-size: .95rem; }
  .ac { grid-template-columns: 34px minmax(0, 1fr) auto; gap: 10px; padding: 10px; }
  .ac .ic { width: 34px; height: 34px; border-radius: 10px; }
  .ac .ic svg { width: 22px; height: 22px; }
  .brand { font-size: 1rem; }
  .brand svg { width: 30px; height: 30px; }
}
.map-dark .leaflet-tile-pane { filter: invert(1) hue-rotate(180deg) brightness(.92) contrast(.88) saturate(.6); }
.map-dark.leaflet-container { background: #1b2238; }
.ac-marker { background: none; border: 0; }
.ac-marker.is-closest .p { fill: #ff6b4a !important; } .ac-marker.sel .p { fill: #ffb23e !important; }