/* SG Aviation Maintenance
   Hangar navy + safety orange. Deliberately distinct from SG Flight School's
   sky blue: condensed industrial type, blueprint grid, logbook-style cards. */

:root {
  --ink: #121c26;          /* hangar navy */
  --ink-2: #1c2a37;
  --ink-3: #2b3d4e;
  --steel: #5d6f80;
  --line: #d9dee3;
  --paper: #f4f2ee;        /* logbook paper */
  --white: #ffffff;
  --text: #1d2730;
  --muted: #56636f;
  --accent: #f26b1d;       /* safety orange */
  --accent-dk: #c9520f;
  --ok: #2f8f5b;
  --radius: 6px;
  --wrap: 1160px;
  --head: "Barlow Condensed", "Arial Narrow", system-ui, sans-serif;
  --body: "Barlow", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--white); color: var(--text);
  font: 400 17px/1.6 var(--body);
}
img, svg { max-width: 100%; }
a { color: var(--accent-dk); text-underline-offset: 2px; }
a:hover { color: var(--accent); }
h1, h2, h3, h4 {
  font-family: var(--head); font-weight: 700; line-height: 1.1;
  letter-spacing: .01em; color: var(--ink); margin: 0 0 .5em;
}
h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); text-transform: uppercase; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); text-transform: uppercase; }
h3 { font-size: 1.45rem; }
h4 { font-size: 1.05rem; text-transform: uppercase; letter-spacing: .08em; }
p { margin: 0 0 1em; }
.mono { font-family: var(--mono); font-size: .85em; letter-spacing: .04em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; z-index: 99; background: var(--white); padding: 8px 12px; }
.todo {
  display: inline-block; background: #ffe25c; color: #000; font: 700 .68rem/1 var(--mono);
  padding: 3px 5px; border-radius: 3px; vertical-align: middle; letter-spacing: .04em;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5em; justify-content: center;
  font: 700 1.05rem/1 var(--head); text-transform: uppercase; letter-spacing: .06em;
  padding: .85em 1.4em; border-radius: var(--radius); text-decoration: none;
  border: 2px solid transparent; cursor: pointer; transition: background .15s, color .15s;
}
.btn--accent { background: var(--accent); color: #fff; }
.btn--accent:hover { background: var(--accent-dk); color: #fff; }
.btn--ghost { border-color: rgba(255,255,255,.5); color: #fff; }
.btn--ghost:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,.08); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: var(--ink-3); color: #fff; }

/* ---------- top bar + header ---------- */
.topbar { background: #0b1219; color: #b8c4cf; font-size: .86rem; }
.topbar .wrap { display: flex; gap: 22px; justify-content: space-between; flex-wrap: wrap; padding-top: 7px; padding-bottom: 7px; }
.topbar a { color: #fff; text-decoration: none; }
.topbar .mono { color: var(--accent); }
.topbar__aog a:first-child { color: var(--accent); font-weight: 600; }

.site-header { background: var(--ink); color: #fff; position: sticky; top: 0; z-index: 50; border-bottom: 3px solid var(--accent); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 74px; }
.logo { display: inline-flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; }
.logo:hover { color: #fff; }
.logo__mark { flex: none; }
.logo__text { display: flex; flex-direction: column; font-family: var(--head); text-transform: uppercase; line-height: 1; }
.logo__text b { font-size: 1.45rem; letter-spacing: .04em; }
.logo__text span { font-size: .92rem; letter-spacing: .32em; color: var(--accent); margin-top: 3px; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a:not(.btn) {
  color: #d7dee5; text-decoration: none; font: 600 1.05rem var(--head);
  text-transform: uppercase; letter-spacing: .06em; padding: 8px 10px; border-radius: 4px;
}
.nav a:not(.btn):hover, .nav a[aria-current] { color: #fff; background: var(--ink-3); }
.nav .btn { margin-left: 10px; padding: .7em 1.1em; }
.nav-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; }

@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--ink);
    flex-direction: column; align-items: stretch; padding: 10px 20px 20px; border-bottom: 3px solid var(--accent);
  }
  .nav.open { display: flex; }
  .nav .btn { margin: 10px 0 0; }
  .topbar__loc { display: none; }
}

/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    linear-gradient(90deg, rgba(18,28,38,.97) 0%, rgba(18,28,38,.86) 55%, rgba(18,28,38,.6) 100%),
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px) 0 0/28px 28px,
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px) 0 0/28px 28px,
    var(--ink-2);
}
.hero .wrap { position: relative; padding-top: 84px; padding-bottom: 92px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.hero h1 { color: #fff; margin-bottom: .35em; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.lede { font-size: 1.22rem; color: #c9d3dc; max-width: 36em; }
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.eyebrow {
  display: inline-block; font: 500 .8rem/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 18px;
}
.eyebrow::before { content: "// "; color: var(--steel); }
.hero__art { color: rgba(255,255,255,.75); }
.hero__art svg { width: 100%; height: auto; display: block; }
.hero--page .wrap { grid-template-columns: 1fr; padding-top: 60px; padding-bottom: 60px; }
.hero--page h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); }
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; padding-top: 56px; padding-bottom: 60px; }
  .hero__art { display: none; }
}

/* ---------- spec strip ---------- */
.specs { background: var(--accent); color: #fff; }
.specs .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.spec { padding: 20px 18px; border-left: 1px solid rgba(255,255,255,.25); }
.spec:first-child { border-left: 0; }
.spec b { display: block; font: 700 1.7rem/1 var(--head); text-transform: uppercase; }
.spec span { font-size: .9rem; opacity: .92; }
@media (max-width: 760px) {
  .specs .wrap { grid-template-columns: 1fr 1fr; }
  .spec:nth-child(3) { border-left: 0; }
  .spec { border-top: 1px solid rgba(255,255,255,.25); }
}

/* ---------- sections ---------- */
.section { padding: 80px 0; }
.section--paper { background: var(--paper); }
.section--dark { background: var(--ink); color: #c9d3dc; }
.section--dark h2, .section--dark h3 { color: #fff; }
.section__head { max-width: 760px; margin-bottom: 40px; }
.section__head p { color: var(--muted); font-size: 1.1rem; }
.section--dark .section__head p { color: #aab6c1; }
.prose { max-width: 780px; }
.prose h2 { margin-top: 1.4em; }
.prose h3 { margin-top: 1.3em; }
.prose ul, .prose ol { padding-left: 1.2em; }
.prose li { margin-bottom: .4em; }

.grid { display: grid; gap: 22px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid--3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .grid--3, .grid--2 { grid-template-columns: 1fr; } }

/* Service cards styled like a work-order tag */
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px 24px; position: relative; display: flex; flex-direction: column;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--accent); border-radius: var(--radius) 0 0 var(--radius);
}
.card__code { font: 500 .74rem/1 var(--mono); color: var(--steel); letter-spacing: .12em; margin-bottom: 12px; }
.card h3 { margin-bottom: .35em; }
.card p { color: var(--muted); }
.card .more { margin-top: auto; font: 700 .95rem var(--head); text-transform: uppercase; letter-spacing: .08em; text-decoration: none; }
.card .more::after { content: " \2192"; }
.section--dark .card { background: var(--ink-2); border-color: var(--ink-3); }
.section--dark .card p { color: #aab6c1; }

/* Numbered process steps */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.step { counter-increment: step; border-top: 3px solid var(--ink); padding-top: 16px; }
.step::before {
  content: counter(step, decimal-leading-zero); font: 500 .85rem var(--mono);
  color: var(--accent-dk); display: block; margin-bottom: 8px; letter-spacing: .1em;
}
.step h3 { font-size: 1.3rem; }
.step p { color: var(--muted); font-size: .97rem; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* Checklist (logbook style) */
.checklist { list-style: none; padding: 0; margin: 0 0 1em; }
.checklist li {
  position: relative; padding: 10px 0 10px 34px; border-bottom: 1px dashed var(--line);
}
.checklist li::before {
  content: ""; position: absolute; left: 2px; top: 13px; width: 18px; height: 18px;
  border: 2px solid var(--ink); border-radius: 3px;
}
.checklist li::after {
  content: ""; position: absolute; left: 8px; top: 15px; width: 6px; height: 11px;
  border: solid var(--accent); border-width: 0 3px 3px 0; transform: rotate(45deg);
}
.section--dark .checklist li { border-color: var(--ink-3); }
.section--dark .checklist li::before { border-color: #aab6c1; }

/* Aircraft types tag list */
.tags { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; }
.tags li {
  font: 500 .85rem/1 var(--mono); padding: 9px 12px; border: 1px solid var(--line);
  border-radius: 4px; background: var(--white);
}

/* Split layout */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 32px; } }

/* Callout / CTA band */
.cta-band { background: var(--accent); color: #fff; padding: 52px 0; }
.cta-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; margin: 0; }
.cta-band p { margin: 6px 0 0; font-size: 1.1rem; }
.cta-band a:not(.btn) { color: #fff; }
.cta-band .btn--dark { font-size: 1.15rem; }

.aog-box {
  border: 2px solid var(--accent); border-radius: var(--radius); padding: 24px;
  background: rgba(242,107,29,.07);
}
.aog-box h3 { color: var(--accent-dk); }
.section--dark .aog-box h3 { color: var(--accent); }

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary {
  cursor: pointer; font: 700 1.25rem var(--head); color: var(--ink); padding: 14px 30px 14px 0;
  list-style: none; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 10px; font-size: 1.6rem; color: var(--accent); }
.faq details[open] summary::after { content: "\2212"; }
.faq details > div { padding: 0 0 14px; color: var(--muted); }

/* ---------- forms ---------- */
.form { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 600px) { .form__row { grid-template-columns: 1fr; } .form { padding: 22px 18px; } }
.field { margin-bottom: 18px; }
.field label { display: block; font: 700 .95rem var(--head); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 6px; color: var(--ink); }
.field label small { font: 400 .85rem var(--body); text-transform: none; letter-spacing: 0; color: var(--muted); }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; color: var(--text); background: #fbfbfa;
  border: 1.5px solid #c6ced5; border-radius: 4px; padding: 11px 12px;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.field input.tail { font-family: var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.field .err { color: #b3261e; font-size: .9rem; margin-top: 5px; display: none; }
.field.invalid input, .field.invalid select { border-color: #b3261e; }
.field.invalid .err { display: block; }
.check { display: flex; gap: 12px; align-items: flex-start; padding: 14px; border: 1.5px dashed var(--accent); border-radius: 4px; margin-bottom: 18px; cursor: pointer; }
.check input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--accent); flex: none; }
.check b { font-family: var(--head); text-transform: uppercase; letter-spacing: .06em; font-size: 1.05rem; }
.hp { position: absolute; left: -5000px; }
.form-status { margin-top: 16px; padding: 14px 16px; border-radius: 4px; display: none; }
.form-status.ok { display: block; background: #e7f4ec; border: 1px solid var(--ok); }
.form-status.bad { display: block; background: #fbeceb; border: 1px solid #b3261e; }
.form .fine { font-size: .88rem; color: var(--muted); margin-top: 12px; }

/* Contact block */
.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { padding: 14px 0; border-bottom: 1px solid var(--line); }
.contact-list b { display: block; font: 700 .9rem var(--head); text-transform: uppercase; letter-spacing: .1em; color: var(--steel); }
.map { border: 0; width: 100%; height: 340px; border-radius: var(--radius); background: var(--paper); }

/* ---------- footer ---------- */
.site-footer { background: #0b1219; color: #9aa7b3; padding: 60px 0 26px; font-size: .95rem; }
.site-footer a { color: #d7dee5; text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.site-footer h4 { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 8px; }
.logo--footer { margin-bottom: 16px; }
.footer-areas { border-top: 1px solid #1f2c38; margin-top: 36px; padding-top: 24px; }
.footer-bottom { border-top: 1px solid #1f2c38; margin-top: 20px; padding-top: 18px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: .85rem; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; gap: 26px; } }