/* Cloudridge Technologies - apron.css
   Hyphenated compound class names drawn from flight operations. No
   namespace prefix, no BEM, no modifier classes: variants are separate
   compounds. Pale cool surface, serif display, mono for figures, flat. */

:root {
  --apron: #EEF1F3;
  --apron-white: #FFFFFF;
  --apron-shade: #E0E5E9;
  --tarmac: #12181D;
  --tarmac-soft: #48545E;
  --tarmac-faint: #7C8790;
  --strip: #CBD3D9;
  --strip-firm: #AAB5BE;
  --beacon: #0F4C75;
  --beacon-wash: #E2ECF3;
  --caution: #D98C00;
  --column: 68ch;
  --margin: clamp(1.25rem, 4vw, 3rem);
  --field: 1200px;
  --serif: "Petrona", Georgia, "Times New Roman", serif;
  --mono: "Spline Sans Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

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

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

body {
  margin: 0;
  background: var(--apron);
  color: var(--tarmac);
  font-family: var(--serif);
  font-size: 17.5px;
  line-height: 1.62;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: -0.014em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0 0 1.05em; }
p:last-child { margin-bottom: 0; }

a { color: var(--beacon); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: #0A3654; }

img, svg { max-width: 100%; height: auto; display: block; }

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

.skip-ahead {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--beacon);
  color: var(--apron-white);
  padding: 0.7rem 1.1rem;
  font-family: var(--mono);
  font-weight: 600;
  z-index: 200;
}
.skip-ahead:focus { left: 0; }

.field-width { width: 100%; max-width: var(--field); margin-inline: auto; padding-inline: var(--margin); }

/* ---------- tower (header) ---------- */

.tower-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(238, 241, 243, 0.93);
  backdrop-filter: saturate(150%) blur(10px);
  -webkit-backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--strip);
}
.tower-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: 72px;
}
.tower-mark { display: inline-flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--tarmac); flex-shrink: 0; }
.tower-glyph { width: 30px; height: 30px; flex-shrink: 0; }
.tower-name {
  font-family: var(--serif);
  font-size: 1.14rem;
  font-weight: 600;
  letter-spacing: -0.016em;
  white-space: nowrap;
}
.tower-links ul { display: flex; align-items: center; gap: 1.7rem; list-style: none; margin: 0; padding: 0; }
.tower-link {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--tarmac-soft);
  text-decoration: none;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.tower-link:hover { color: var(--tarmac); border-bottom-color: var(--strip-firm); }
.tower-link[aria-current="page"] { color: var(--tarmac); border-bottom-color: var(--beacon); }

.tower-latch {
  display: none;
  background: none;
  border: 1px solid var(--strip-firm);
  width: 40px; height: 40px; padding: 0;
  cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.tower-slat { display: block; width: 16px; height: 1.5px; background: var(--tarmac); transition: transform 0.2s ease, opacity 0.2s ease; }
.tower-latch[aria-expanded="true"] .tower-slat:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.tower-latch[aria-expanded="true"] .tower-slat:nth-child(2) { opacity: 0; }
.tower-latch[aria-expanded="true"] .tower-slat:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 880px) {
  .tower-latch { display: flex; }
  .tower-links {
    position: absolute; inset: 72px 0 auto 0;
    background: var(--apron-white);
    border-bottom: 1px solid var(--strip);
    display: none;
    padding: 0.5rem var(--margin) 1.25rem;
  }
  .tower-links[data-open="yes"] { display: block; }
  .tower-links ul { flex-direction: column; align-items: stretch; gap: 0; }
  .tower-link { display: block; padding: 0.9rem 0; border-bottom: 1px solid var(--strip); }
}

/* ---------- approach (compact centred hero) ---------- */

.approach {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--strip);
  text-align: center;
}
.approach-art { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.approach-veil {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(to bottom, rgba(238, 241, 243, 0.9), rgba(238, 241, 243, 0.96) 55%, rgba(238, 241, 243, 0.99));
}
.approach-inner { padding-block: clamp(3.5rem, 9vw, 6rem); }
.approach-title { font-size: clamp(2.2rem, 5.2vw, 3.6rem); margin-bottom: 1.1rem; max-width: 21ch; margin-inline: auto; }
.approach-line { font-size: clamp(1.02rem, 1.9vw, 1.2rem); color: var(--tarmac-soft); max-width: 44rem; margin-inline: auto; margin-bottom: 1.85rem; }
.approach-acts { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; }

.callsign {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--beacon);
  margin-bottom: 0.95rem;
  font-weight: 600;
}

/* ---------- clearance (buttons) ---------- */

.clearance {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.76rem 1.4rem;
  font-family: var(--mono);
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.clearance-granted { background: var(--beacon); color: var(--apron-white); }
.clearance-granted:hover { background: #0A3654; color: var(--apron-white); }
.clearance-hold { border-color: var(--strip-firm); color: var(--tarmac); }
.clearance-hold:hover { border-color: var(--beacon); color: var(--beacon); }

/* ---------- sector (section) ---------- */

.sector { padding-block: clamp(3rem, 7vw, 5.25rem); }
.sector-white { background: var(--apron-white); border-block: 1px solid var(--strip); }
.sector-shade { background: var(--apron-shade); border-block: 1px solid var(--strip); }

.sector-head { max-width: 47rem; margin-bottom: clamp(1.75rem, 4vw, 2.75rem); }
.sector-title { font-size: clamp(1.7rem, 3.5vw, 2.45rem); margin-bottom: 0.8rem; }
.sector-line { color: var(--tarmac-soft); max-width: var(--column); }

/* ---------- flight strip (service catalogue table) ---------- */

.strip-scroll {
  overflow-x: auto;
  border: 1px solid var(--strip);
  background: var(--apron-white);
  -webkit-overflow-scrolling: touch;
}
.flight-strip { width: 100%; border-collapse: collapse; font-size: 0.9rem; min-width: 44rem; }
.flight-strip caption {
  text-align: left;
  padding: 0.85rem 1rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--tarmac-faint);
  border-bottom: 1px solid var(--strip);
}
.flight-strip th, .flight-strip td { padding: 0.8rem 1rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--strip); }
.flight-strip thead th {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tarmac);
  font-weight: 600;
  background: var(--apron-shade);
}
.flight-strip tbody tr:last-child td { border-bottom: 0; }
.flight-strip td { color: var(--tarmac-soft); }
.flight-strip th[scope="row"] { color: var(--tarmac); font-weight: 600; font-family: var(--serif); font-size: 1rem; }

.squawk {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--strip-firm);
  color: var(--tarmac-faint);
  white-space: nowrap;
}
.squawk-building { border-color: var(--caution); color: #8A5900; }
.squawk-none { border-style: dashed; }

/* ---------- holding pattern (two column prose) ---------- */

.holding-pattern { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: clamp(2rem, 5vw, 4rem); align-items: start; }
@media (max-width: 880px) { .holding-pattern { grid-template-columns: 1fr; } }

.readback { max-width: var(--column); }
.readback h2 { font-size: clamp(1.45rem, 3vw, 1.9rem); margin: 2.3rem 0 0.8rem; }
.readback h3 { font-size: 1.12rem; margin: 1.75rem 0 0.5rem; }
.readback > :first-child { margin-top: 0; }
.readback ul, .readback ol { color: var(--tarmac-soft); padding-left: 1.15rem; margin: 0 0 1.05em; }
.readback li { margin-bottom: 0.42rem; }
.readback strong { color: var(--tarmac); font-weight: 600; }
.stand-first { font-size: 1.1rem; color: var(--tarmac-soft); }

/* ---------- taxiway (fact list) ---------- */

.taxiway { border-top: 1px solid var(--strip); margin: 0; }
.taxiway > div {
  display: grid;
  grid-template-columns: minmax(0, 13rem) minmax(0, 1fr);
  gap: 1rem;
  padding-block: 0.78rem;
  border-bottom: 1px solid var(--strip);
}
@media (max-width: 620px) { .taxiway > div { grid-template-columns: 1fr; gap: 0.15rem; } }
.taxiway dt { font-family: var(--mono); font-size: 0.8rem; color: var(--tarmac-faint); }
.taxiway dd { margin: 0; color: var(--tarmac); min-width: 0; }

/* ---------- plate (figure) ---------- */

.plate-figure { margin: 2rem 0 0; }
.plate-figure img { width: 100%; border: 1px solid var(--strip); }
.plate-caption {
  margin-top: 0.8rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--tarmac-faint);
  line-height: 1.6;
  max-width: 36rem;
}

/* ---------- notice to airmen (callout) ---------- */

.notice-block {
  border: 1px solid var(--strip-firm);
  border-left: 3px solid var(--beacon);
  background: var(--beacon-wash);
  padding: 1rem 1.2rem;
  margin: 1.4rem 0;
  color: var(--tarmac);
}
.notice-block p:last-child { margin-bottom: 0; }

/* ---------- legal document ---------- */

.log-book {
  display: grid;
  grid-template-columns: minmax(0, 15rem) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.75rem);
  align-items: start;
  padding-block: clamp(2.5rem, 6vw, 4.25rem);
}
@media (max-width: 980px) { .log-book { grid-template-columns: 1fr; } }

.log-index {
  position: sticky;
  top: 94px;
  border: 1px solid var(--strip);
  background: var(--apron-white);
  padding: 1.2rem 1.1rem;
  max-height: calc(100vh - 124px);
  overflow-y: auto;
}
@media (max-width: 980px) { .log-index { position: static; max-height: none; } }
.log-index-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--tarmac-faint);
  margin-bottom: 0.8rem;
  font-weight: 600;
}
.log-index-list { list-style: none; margin: 0; padding: 0; counter-reset: lq; }
.log-index-list li { counter-increment: lq; }
.log-index-link {
  display: grid;
  grid-template-columns: 1.9rem 1fr;
  gap: 0.35rem;
  padding: 0.36rem 0;
  color: var(--tarmac-soft);
  text-decoration: none;
  font-size: 0.87rem;
  line-height: 1.4;
}
.log-index-link::before { content: counter(lq, decimal-leading-zero); font-family: var(--mono); font-size: 0.72rem; color: var(--tarmac-faint); padding-top: 0.16rem; }
.log-index-link:hover { color: var(--beacon); }

.log-page { min-width: 0; }
.log-head { margin-bottom: 2.3rem; }
.log-head h1 { font-size: clamp(2rem, 4.2vw, 2.9rem); margin-bottom: 0.9rem; }
.log-dates {
  display: flex; flex-wrap: wrap; gap: 0.45rem 1.4rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--tarmac-faint);
  margin-top: 1.35rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--strip);
}

.log-entry { margin-bottom: 2.5rem; scroll-margin-top: 94px; }
.log-entry-title {
  display: grid;
  grid-template-columns: 2.9rem 1fr;
  gap: 0.4rem;
  font-size: clamp(1.22rem, 2.4vw, 1.52rem);
  margin-bottom: 0.9rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--strip);
}
.log-entry-no { font-family: var(--mono); font-size: 0.85rem; color: var(--beacon); padding-top: 0.36rem; }
.log-entry-body { color: var(--tarmac-soft); max-width: var(--column); }
.log-entry-body h3 { font-size: 1.04rem; font-weight: 600; color: var(--tarmac); margin: 1.5rem 0 0.5rem; }
.log-entry-body ul, .log-entry-body ol { padding-left: 1.15rem; margin: 0 0 1.05em; }
.log-entry-body li { margin-bottom: 0.44rem; }
.log-entry-body strong { color: var(--tarmac); font-weight: 600; }
.log-entry-body a { overflow-wrap: anywhere; }

.manifest-scroll {
  overflow-x: auto;
  margin: 1.3rem 0;
  border: 1px solid var(--strip);
  background: var(--apron-white);
  -webkit-overflow-scrolling: touch;
}
.manifest { width: 100%; border-collapse: collapse; font-size: 0.88rem; min-width: 34rem; }
.manifest caption {
  text-align: left;
  padding: 0.78rem 0.95rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tarmac-faint);
  border-bottom: 1px solid var(--strip);
}
.manifest th, .manifest td { padding: 0.66rem 0.95rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--strip); }
.manifest thead th {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--tarmac);
  font-weight: 600;
  background: var(--apron-shade);
}
.manifest tbody tr:last-child td { border-bottom: 0; }
.manifest td { color: var(--tarmac-soft); }

/* ---------- role badge, used in the controller/processor split ---------- */

.role-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 0.18rem 0.48rem;
  margin-right: 0.45rem;
  border: 1px solid var(--beacon);
  color: var(--beacon);
  vertical-align: 0.12em;
}
.role-tag-processor { border-color: var(--caution); color: #8A5900; }

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

.ground-crew {
  background: var(--apron-shade);
  border-top: 1px solid var(--strip);
  padding-block: clamp(2.5rem, 6vw, 3.5rem) 1.8rem;
  font-size: 0.92rem;
}
.ground-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(auto-fit, minmax(140px, 1fr));
  gap: 2rem;
  margin-bottom: 2.15rem;
}
@media (max-width: 700px) { .ground-grid { grid-template-columns: 1fr 1fr; } }
.ground-brand { grid-column: 1 / -1; }
@media (min-width: 701px) { .ground-brand { grid-column: auto; } }
.ground-mark { display: inline-flex; align-items: center; gap: 0.55rem; margin-bottom: 0.8rem; }
.ground-blurb { color: var(--tarmac-faint); max-width: 26rem; }
.ground-col-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tarmac-faint);
  margin-bottom: 0.75rem;
  font-weight: 600;
}
.ground-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.48rem; }
.ground-col a { color: var(--tarmac-soft); text-decoration: none; }
.ground-col a:hover { color: var(--beacon); }
.ground-legal {
  border-top: 1px solid var(--strip);
  padding-top: 1.55rem;
  color: var(--tarmac-faint);
  font-size: 0.84rem;
  line-height: 1.7;
  display: grid;
  gap: 0.42rem;
}
.ground-legal p { margin: 0; }

/* ---------- reveal ---------- */

@media (prefers-reduced-motion: no-preference) {
  .taxi-in { opacity: 0; transform: translateY(10px); transition: opacity 0.42s ease, transform 0.42s ease; }
  .taxi-in[data-arrived="yes"] { opacity: 1; transform: none; }
}