/* UltimateSimGuide.com — shared styles */
/* Brand palette per UltimateSimGuide Brand Book:
   Backgrounds: Stratosphere Blue #1b304e (dominant), Mustard Yellow #ebc21d,
                Safety Orange #f47b20, Runway Sand #dbcd95, Pigeon Blue #abd9c5
   Typography:  White #ffffff, Air Force Blue #7896ba, Cadet Blue #47698e,
                Turbine Rust #994b22, Dirty Mustard #7f6829, Camo Brown #7f7247 */

:root {
  --bg: #1b304e;            /* Stratosphere Blue */
  --panel: rgba(255, 255, 255, 0.05);
  --panel-2: rgba(255, 255, 255, 0.09);
  --line: rgba(120, 150, 186, 0.35);   /* Air Force Blue @ 35% */
  --text: #ffffff;
  --muted: #7896ba;         /* Air Force Blue */
  --green: #ebc21d;         /* Mustard Yellow — normal / "all good" accents */
  --amber: #f47b20;         /* Safety Orange — highlights / cautions / CTAs */
  --cyan: #abd9c5;          /* Pigeon Blue — data / links */
  --sand: #dbcd95;          /* Runway Sand — soft accents */
  --red: #994b22;           /* Turbine Rust — warnings */
  --radius: 12px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: linear-gradient(180deg, #1b304e 0%, #16273f 55%, #0c1626 100%) fixed;
  background-color: var(--bg);
  color: var(--text);
  font-family: "Barlow", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

/* Brand typography: Barlow ExtraBold H1, Bold H2, SemiBold paragraph headers */
h1 { font-weight: 800; }
h2 { font-weight: 700; }
h3 { font-weight: 600; }

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Nav ---------- */
header.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(27, 48, 78, 0.94);   /* Stratosphere Blue */
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 0.7rem 1.2rem;
  display: flex; align-items: center; gap: 1.4rem; flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 1.05rem; color: var(--text); letter-spacing: 0.2px; display: inline-flex; align-items: center; }
.brand:hover { text-decoration: none; }
.brand .usg-u { color: var(--amber); }
.brand img { height: 26px; width: auto; display: block; }
.menu-btn {
  display: none; background: none; border: 1px solid var(--line); border-radius: 8px;
  color: var(--muted); padding: 0.32rem 0.55rem; cursor: pointer; margin-left: auto;
  align-items: center;
}
.menu-btn:hover { color: var(--amber); border-color: var(--amber); }
.nav-links { display: flex; gap: 1.1rem; flex-wrap: wrap; margin-left: auto; align-items: center; }
.nav-links a { color: var(--muted); font-size: 0.92rem; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links a.active { color: var(--amber); }
.drop { position: relative; display: inline-flex; align-items: center; }
.drop > a::after { content: " ▾"; font-size: 0.7em; }
.drop-menu {
  display: none; position: absolute; top: 100%; left: -0.6rem; z-index: 60;
  background: #1b304e; border: 1px solid var(--line); border-radius: 10px;
  padding: 0.45rem 0; min-width: 185px; box-shadow: 0 8px 20px rgba(0,0,0,0.35);
}
.drop:hover .drop-menu, .drop:focus-within .drop-menu { display: block; }
.drop-menu a { display: block; padding: 0.42rem 1.1rem; color: var(--muted); font-size: 0.92rem; }
.drop-menu a:hover { color: var(--text); background: var(--panel-2); text-decoration: none; }
.tile h3 { color: var(--green); margin-top: 0; }
.tile .sub { color: var(--muted); font-size: 0.85rem; }
/* Option C tiles: solid raised panels, checklist featured in mustard */
.tile.solid {
  background: #24405f; border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.tile.solid h3 { color: #ffffff; }
.tile.solid:hover {
  transform: translateY(-3px); box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  border-color: var(--line); text-decoration: none;
}
.tile .open { display: block; color: var(--green); font-size: 0.85rem; font-weight: 600; margin-top: 0.7rem; }
.tile.featured { background: var(--green); }
.tile.featured h3 { color: #1b304e; }
.tile.featured .sub { color: #7f6829; }
.tile.featured .open { color: #1b304e; }
.book-strip { display: flex; align-items: center; gap: 1.5rem; justify-content: space-between; flex-wrap: wrap; margin-top: 3rem; }
.nav-links a.cta { color: #ffffff; background: var(--amber); padding: 0.15rem 0.7rem; border-radius: 999px; font-weight: 600; }

.copilot-tag {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 1.5px;
  color: var(--green); border: 1px solid var(--green);
  padding: 0.1rem 0.5rem; border-radius: 4px; text-transform: uppercase;
}

/* ---------- Layout ---------- */
main { max-width: 1080px; margin: 0 auto; padding: 2rem 1.2rem 4rem; }
.narrow { max-width: 760px; }

h1 { font-size: 2rem; line-height: 1.25; margin-bottom: 0.8rem; }
h2 { font-size: 1.35rem; margin: 2rem 0 0.8rem; }
h3 { font-size: 1.05rem; margin: 1.2rem 0 0.5rem; }
p.lead { color: var(--muted); font-size: 1.08rem; max-width: 640px; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

.grid { display: grid; gap: 1rem; margin-top: 1.4rem; }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.2rem 1.3rem;
}
.card h3 { margin-top: 0; }
.card .tag {
  display: inline-block; font-family: var(--mono); font-size: 0.65rem;
  letter-spacing: 1.2px; text-transform: uppercase; margin-bottom: 0.6rem;
  padding: 0.1rem 0.5rem; border-radius: 4px;
}
.tag.green { color: var(--green); border: 1px solid var(--green); }
.tag.amber { color: var(--amber); border: 1px solid var(--amber); }
.tag.cyan  { color: var(--cyan);  border: 1px solid var(--cyan); }

.btn {
  display: inline-block; padding: 0.55rem 1.2rem; border-radius: 8px;
  font-weight: 600; font-size: 0.95rem; cursor: pointer; border: none;
}
.btn.primary { background: var(--amber); color: #ffffff; }      /* Safety Orange + White */
.btn.primary:hover { filter: brightness(1.08); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.ghost:hover { border-color: var(--muted); text-decoration: none; }
.btn.amber { background: var(--green); color: #1b304e; }        /* Mustard + Stratosphere */

/* ---------- Hero ---------- */
.hero-banner {
  display: block; width: 100%; height: auto; margin-top: 1.6rem;
  border-radius: 16px; border: 1px solid var(--line);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}
.hero { padding: 3.5rem 0 2rem; }
.hero .kicker {
  font-family: var(--mono); color: var(--green); font-size: 0.8rem;
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 1rem;
}
.hero h1 { font-size: 2.6rem; max-width: 720px; }
.hero .actions { margin-top: 1.6rem; display: flex; gap: 0.8rem; flex-wrap: wrap; }

/* ---------- Forms ---------- */
input[type="text"], input[type="number"], input[type="email"], select {
  background: var(--panel-2); border: 1px solid var(--line); color: var(--text);
  padding: 0.55rem 0.8rem; border-radius: 8px; font-size: 1rem; width: 100%;
  font-family: inherit;
}
input:focus, select:focus { outline: 2px solid var(--cyan); border-color: transparent; }
label { display: block; font-size: 0.85rem; color: var(--muted); margin: 0.8rem 0 0.3rem; }

.field-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.8rem; }

/* ---------- Results / readouts ---------- */
.readout {
  font-family: var(--mono); background: rgba(255, 255, 255, 0.06); border: 1px solid var(--line);
  border-radius: 8px; padding: 1rem 1.2rem; margin-top: 1rem;
}
.readout .big { font-size: 1.8rem; color: var(--green); }
.readout .label { color: var(--muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; }
.readout.warn .big { color: var(--amber); }
.readout.danger { background: var(--red); border-color: var(--red); }  /* Turbine Rust + White per brand pairings */
.readout.danger .big, .readout.danger .label { color: #ffffff; }

/* ---------- Checklist ---------- */
.phase-nav { display: flex; gap: 0.4rem; flex-wrap: wrap; margin: 1.2rem 0; }
.phase-nav button {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.5px;
  background: var(--panel); color: var(--muted); border: 1px solid var(--line);
  padding: 0.35rem 0.7rem; border-radius: 999px; cursor: pointer;
}
.phase-nav button.active { color: var(--bg); background: var(--amber); border-color: var(--amber); font-weight: 700; }
.phase-nav button.done { color: var(--green); border-color: var(--green); }

.check-item {
  display: flex; align-items: flex-start; gap: 0.9rem;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 0.85rem 1rem; margin-bottom: 0.55rem;
  cursor: pointer; user-select: none;
}
.check-item:hover { border-color: var(--muted); }
.check-item .box {
  width: 22px; height: 22px; min-width: 22px; margin-top: 2px;
  border: 2px solid var(--muted); border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; color: #1b304e; font-weight: 800;
}
.check-item.done { opacity: 0.55; }
.check-item.done .box { background: var(--green); border-color: var(--green); }
.check-item .challenge { font-weight: 600; }
.check-item .response { font-family: var(--mono); color: var(--cyan); font-size: 0.9rem; }
.check-item .why {
  display: none; color: var(--muted); font-size: 0.85rem; margin-top: 0.4rem;
  border-left: 2px solid var(--amber); padding-left: 0.7rem;
}
.check-item.open .why { display: block; }
.check-item .info-btn {
  margin-left: auto; background: none; border: 1px solid var(--line);
  color: var(--muted); border-radius: 50%; width: 24px; height: 24px; min-width: 24px;
  cursor: pointer; font-size: 0.75rem; line-height: 1;
}
.check-item .info-btn:hover { color: var(--amber); border-color: var(--amber); }
.why .difsrip { margin-top: 0.6rem; }
.difsrip .dstep { display: flex; gap: 0.6rem; align-items: baseline; padding: 0.28rem 0; }
.difsrip .dltr {
  font-family: var(--mono); font-weight: 700; color: var(--amber);
  border: 1px solid var(--amber); border-radius: 5px; padding: 0 0.4rem; font-size: 0.72rem;
}
.difsrip strong { color: var(--text); }
.difsrip .dval { color: var(--green); font-family: var(--mono); font-size: 0.78rem; margin-top: 0.15rem; }
.check-item .flt {
  color: var(--green); font-family: var(--mono); font-size: 0.8rem; margin-top: 0.35rem;
  border-left: 2px solid var(--green); padding-left: 0.7rem;
}

.progress-bar { height: 6px; background: var(--panel-2); border-radius: 999px; overflow: hidden; margin: 0.8rem 0 0.2rem; }
.progress-bar div { height: 100%; background: var(--green); width: 0%; transition: width 0.25s; }

/* Kneeboard mode */
body.kneeboard main { max-width: 640px; }
body.kneeboard .check-item { padding: 1.1rem 1rem; }
body.kneeboard .check-item .challenge { font-size: 1.15rem; }
body.kneeboard .check-item .response { font-size: 1.05rem; }
body.kneeboard .site-footer, body.kneeboard .kb-hide { display: none; }

/* ---------- Panic button ---------- */
.panic-search {
  font-family: var(--mono); font-size: 1.3rem !important;
  padding: 1rem 1.2rem !important; text-transform: uppercase;
}
.panic-result {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 1rem 1.2rem; margin-top: 0.7rem;
}
.panic-result .term { font-family: var(--mono); font-size: 1.1rem; }
.panic-result .term.fma { color: var(--green); }
.panic-result .term.ecam-amber { color: var(--amber); }
.panic-result .term.ecam-red { background: var(--red); color: #ffffff; padding: 0.05rem 0.45rem; border-radius: 4px; }
.panic-result .term.memo { color: var(--cyan); }
.panic-result .kind { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-left: 0.6rem; }
.panic-result .action { color: var(--green); font-size: 0.92rem; margin-top: 0.4rem; }
.panic-result .action::before { content: "→ "; }

/* ---------- Tables ---------- */
table.data { border-collapse: collapse; width: 100%; margin-top: 0.8rem; font-size: 0.92rem; }
table.data th, table.data td { border: 1px solid var(--line); padding: 0.5rem 0.8rem; text-align: left; }
table.data th { background: var(--panel-2); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); }
table.data td.mono { font-family: var(--mono); color: var(--cyan); }

/* ---------- Briefing card ---------- */
.brief-card { font-family: var(--mono); }
.brief-card .row {
  display: flex; justify-content: space-between; gap: 1rem;
  padding: 0.55rem 0; border-bottom: 1px dashed var(--line); font-size: 0.95rem;
}
.brief-card .row:last-child { border-bottom: none; }
.brief-card .k { color: var(--muted); }
.brief-card .v { color: var(--green); text-align: right; word-break: break-word; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line); margin-top: 3rem;
  padding: 2rem 1.2rem; text-align: center; color: var(--muted); font-size: 0.85rem;
}
.site-footer .disclaimer { max-width: 640px; margin: 0.6rem auto 0; font-size: 0.75rem; opacity: 0.8; }

/* ---------- Email signup ---------- */
.signup {
  background: linear-gradient(135deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem; margin-top: 2.5rem;
}
.signup form { display: flex; gap: 0.6rem; margin-top: 0.8rem; flex-wrap: wrap; }
.signup input { flex: 1; min-width: 220px; }

/* ---------- Mobile drawer nav ---------- */
@media (max-width: 768px) {
  .menu-btn { display: inline-flex; }
  .nav-inner { gap: 0.8rem; }
  .nav-links {
    display: none; width: 100%; flex-direction: column; align-items: stretch;
    gap: 0; margin-left: 0; padding: 0.4rem 0 0.6rem;
    border-top: 1px solid var(--line); margin-top: 0.5rem;
  }
  header.nav.open .nav-links { display: flex; }
  .nav-links a { padding: 0.55rem 0.2rem; font-size: 1rem; }
  .drop { width: 100%; }
  .drop > a { display: block; }
  .drop > a::after { content: ""; }
  .drop-menu {
    display: block; position: static; background: transparent;
    border: none; box-shadow: none; padding: 0 0 0 1.1rem; min-width: 0;
  }
  .drop-menu a { padding: 0.5rem 0.2rem; font-size: 0.98rem; }
  .drop-menu a:hover { background: transparent; }
  .nav-links a.cta {
    align-self: flex-start; margin-top: 0.5rem; padding: 0.4rem 1.2rem; font-size: 1rem;
  }
  .hero h1 { font-size: 1.9rem; }
  .brand img { height: 22px; }
}