/* ============================================================
   CYAG – Community Youth Aerospace Group
   Shared Styles  |  WCAG 2.1 AA compliant
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;700;900&family=Exo+2:ital,wght@0,300;0,400;0,600;1,300&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Brand colours */
  --clr-space:    #03050f;
  --clr-navy:     #0a1628;
  --clr-navy-mid: #0d1f3c;
  --clr-blue:     #1a3a6b;
  --clr-accent:   #e8003d;   /* brand red */
  --clr-gold:     #f5c842;
  --clr-sky:      #4a9edd;
  --clr-white:    #f0f4ff;
  --clr-muted:    #8ba4c8;
  --clr-star:     #c8d8f0;

  /* Typography */
  --font-display: 'Orbitron', monospace;
  --font-body:    'Exo 2', sans-serif;

  /* Spacing */
  --max-w: 72rem;
  --section-pad: 5rem 1.5rem;
  --radius: 0.5rem;

  /* Focus ring */
  --focus-ring: 0 0 0 3px var(--clr-gold), 0 0 0 5px var(--clr-space);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 100%;   /* respects user browser settings */
}

body {
  font-family: var(--font-body);
  background-color: var(--clr-space);
  color: var(--clr-white);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { color: var(--clr-sky); }
a:hover { color: var(--clr-gold); }

/* ---------- Focus Styles (WCAG 2.4.7 / 2.4.11) ---------- */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius);
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: absolute;
  top: -10rem;
  left: 1rem;
  background: var(--clr-gold);
  color: var(--clr-space);
  font-weight: 700;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius);
  z-index: 9999;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

/* ============================================================
   STAR FIELD BACKGROUND
   ============================================================ */
.star-field {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(26,58,107,0.35) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 90%, rgba(13,31,60,0.5) 0%, transparent 60%),
    var(--clr-space);
}

/* Procedural stars via SVG noise pattern */
.star-field::before,
.star-field::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at  8%  12%, rgba(200,216,240,0.9) 0%, transparent 100%),
    radial-gradient(1px 1px at 22%  45%, rgba(200,216,240,0.7) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 35%  8%, rgba(255,255,255,0.85) 0%, transparent 100%),
    radial-gradient(1px 1px at 48%  62%, rgba(200,216,240,0.6) 0%, transparent 100%),
    radial-gradient(2px 2px at 55%  22%, rgba(245,200,66,0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 67%  80%, rgba(200,216,240,0.8) 0%, transparent 100%),
    radial-gradient(1px 1px at 78%  35%, rgba(255,255,255,0.7) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 88%  55%, rgba(200,216,240,0.9) 0%, transparent 100%),
    radial-gradient(1px 1px at  5%  72%, rgba(200,216,240,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 15%  88%, rgba(255,255,255,0.6) 0%, transparent 100%),
    radial-gradient(2px 2px at 30%  50%, rgba(74,158,221,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 43%  28%, rgba(200,216,240,0.7) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 60%  70%, rgba(255,255,255,0.8) 0%, transparent 100%),
    radial-gradient(1px 1px at 73%  15%, rgba(200,216,240,0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 92%  40%, rgba(255,255,255,0.75) 0%, transparent 100%),
    radial-gradient(1px 1px at  3%  30%, rgba(200,216,240,0.5) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 18%  60%, rgba(245,200,66,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 38%  85%, rgba(200,216,240,0.8) 0%, transparent 100%),
    radial-gradient(1px 1px at 52%  5%, rgba(255,255,255,0.65) 0%, transparent 100%),
    radial-gradient(2px 2px at 70%  48%, rgba(74,158,221,0.35) 0%, transparent 100%),
    radial-gradient(1px 1px at 82%  22%, rgba(200,216,240,0.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 95%  68%, rgba(255,255,255,0.55) 0%, transparent 100%),
    radial-gradient(1px 1px at 12%  95%, rgba(200,216,240,0.6) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 26%  18%, rgba(255,255,255,0.8) 0%, transparent 100%),
    radial-gradient(1px 1px at 44%  42%, rgba(200,216,240,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 58%  92%, rgba(255,255,255,0.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 76%  65%, rgba(200,216,240,0.65) 0%, transparent 100%),
    radial-gradient(2px 2px at 86%  8%, rgba(245,200,66,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at  7%  52%, rgba(200,216,240,0.75) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 97%  82%, rgba(255,255,255,0.6) 0%, transparent 100%);
}

.star-field::after {
  transform: translate(50px, 80px);
  opacity: 0.6;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(3, 5, 15, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(74,158,221,0.2);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--clr-white);
}

.nav-logo img {
  height: 3rem;
  width: auto;
}

.nav-logo-text {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
  color: var(--clr-sky);
  display: none;
}

@media (min-width: 40em) { .nav-logo-text { display: block; } }

/* Hamburger */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1.5px solid rgba(74,158,221,0.5);
  border-radius: var(--radius);
  padding: 0.5rem;
  cursor: pointer;
  color: var(--clr-white);
  line-height: 0;
}

.nav-toggle svg { width: 1.5rem; height: 1.5rem; }

@media (max-width: 55em) {
  .nav-toggle { display: flex; align-items: center; }
}

/* Nav list */
.nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-list a {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--clr-muted);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  display: block;
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--clr-white);
  border-color: rgba(74,158,221,0.4);
  background: rgba(74,158,221,0.08);
}

.nav-list a[aria-current="page"] {
  color: var(--clr-gold);
  border-color: rgba(245,200,66,0.35);
}

.nav-cta a {
  background: var(--clr-accent) !important;
  color: var(--clr-white) !important;
  border-color: transparent !important;
}
.nav-cta a:hover { background: #ff1a4e !important; }

@media (max-width: 55em) {
  .nav-list {
    position: absolute;
    top: 4.5rem;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(3, 5, 15, 0.97);
    border-bottom: 1px solid rgba(74,158,221,0.2);
    padding: 1rem 1.5rem 1.5rem;
    gap: 0.5rem;
    display: none;
  }
  .nav-list.is-open { display: flex; }
  .nav-list a { padding: 0.75rem 1rem; font-size: 0.8rem; }
}

/* ============================================================
   HERO – CLOUD-TO-SPACE GRADIENT
   ============================================================ */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 7rem 1.5rem 5rem;
  text-align: center;
}

/* Layered cloud-to-space gradient */
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    /* Top: stars / space */
    linear-gradient(
      to bottom,
      var(--clr-space) 0%,
      var(--clr-navy) 18%,
      rgba(30, 60, 100, 0.9) 35%,
      /* Cloud transition zone */
      rgba(80, 120, 170, 0.6) 52%,
      rgba(140, 170, 200, 0.4) 62%,
      rgba(180, 200, 220, 0.2) 72%,
      rgba(10, 22, 40, 0.8) 85%,
      var(--clr-navy-mid) 100%
    );
}

/* Cloud puffs (CSS-only) */
.hero-clouds {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 55%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.cloud {
  position: absolute;
  background: rgba(200, 220, 240, 0.07);
  border-radius: 50%;
  filter: blur(28px);
  animation: cloudDrift linear infinite;
}

.cloud:nth-child(1) { width: 28rem; height: 10rem; bottom: 15%; left: -5%; animation-duration: 60s; }
.cloud:nth-child(2) { width: 20rem; height: 8rem;  bottom: 28%; left: 30%; animation-duration: 80s; opacity: 0.7; animation-delay: -20s; }
.cloud:nth-child(3) { width: 32rem; height: 12rem; bottom: 8%;  right: -10%; animation-duration: 70s; animation-delay: -35s; }
.cloud:nth-child(4) { width: 16rem; height: 7rem;  bottom: 40%; left: 55%; animation-duration: 90s; opacity: 0.5; animation-delay: -10s; }

@keyframes cloudDrift {
  from { transform: translateX(0); }
  to   { transform: translateX(8%); }
}

.page-hero .hero-inner {
  position: relative;
  z-index: 1;
  max-width: 52rem;
  margin: 0 auto;
}

/* ============================================================
   TYPOGRAPHY UTILITIES
   ============================================================ */
.eyebrow {
  font-family: var(--font-display);
  font-size: 1.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--clr-sky);
  margin-bottom: 1rem;
  display: block;
}

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.15; }

h1 {
  font-size: clamp(2rem, 6vw, 3.8rem);
  font-weight: 900;
  color: var(--clr-white);
  text-shadow: 0 0 40px rgba(74,158,221,0.5);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--clr-white);
}

.h2 {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--clr-white);
}

h3 {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 600;
  color: var(--clr-sky);
}

.h3 {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 600;
  color: var(--clr-sky);
}

.lead {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-muted);
  max-width: 42rem;
  margin-inline: auto;
  margin-top: 1rem;
}

.accent { color: var(--clr-accent); }
.gold   { color: var(--clr-gold); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.85rem 2rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  line-height: 1;
}

.btn-primary {
  background: var(--clr-accent);
  color: #fff;
  border-color: var(--clr-accent);
}
.btn-primary:hover {
  background: transparent;
  color: var(--clr-accent);
  box-shadow: 0 0 20px rgba(232,0,61,0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--clr-sky);
  border-color: var(--clr-sky);
}
.btn-secondary:hover {
  background: var(--clr-sky);
  color: var(--clr-space);
  box-shadow: 0 0 20px rgba(74,158,221,0.4);
}

.btn-gold {
  background: var(--clr-gold);
  color: var(--clr-space);
  border-color: var(--clr-gold);
}
.btn-gold:hover {
  background: transparent;
  color: var(--clr-gold);
  box-shadow: 0 0 20px rgba(245,200,66,0.5);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 2.5rem;
}

/* ============================================================
   SECTION CONTAINERS
   ============================================================ */
.section {
  padding: var(--section-pad);
}

.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header .eyebrow { margin-bottom: 0.75rem; }

.divider {
  width: 4rem;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-sky));
  border-radius: 2px;
  margin: 1rem auto 0;
}

/* ============================================================
   CARDS
   ============================================================ */
.card-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
}

/* For 2 card grid */
.card-grid-2 {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 24rem), 1fr));
}

.card {
  background: rgba(13, 31, 60, 0.6);
  border: 1px solid rgba(74,158,221,0.15);
  border-radius: 0.75rem;
  padding: 2rem;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-sky), transparent);
  opacity: 0;
  transition: opacity 0.25s;
}

.card:hover {
  border-color: rgba(74,158,221,0.4);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4), 0 0 0 1px rgba(74,158,221,0.1);
  transform: translateY(-3px);
}

.card:hover::before { opacity: 1; }

.card-icon {
  font-size: 2.4rem;
  margin-bottom: 1rem;
  display: block;
  line-height: 1;
}

.card h3 { margin-bottom: 0.6rem; }
.card p  { color: var(--clr-muted); font-size: 0.95rem; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: rgba(3, 5, 15, 0.9);
  border-top: 1px solid rgba(74,158,221,0.15);
  padding: 3rem 1.5rem 1.5rem;
  text-align: center;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  gap: 2rem;
}

.footer-logo img { height: 13.5rem; margin: 0 auto 0.75rem; }

.footer-tagline {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--clr-sky);
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}

.footer-links a {
  font-family: var(--font-display);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--clr-gold); }

.footer-copy {
  color: rgba(139,164,200,0.5);
  font-size: 0.8rem;
  border-top: 1px solid rgba(74,158,221,0.1);
  padding-top: 1.5rem;
  margin-top: 1rem;
}

/* ============================================================
   UTILITY
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }

.highlight-band {
  background: linear-gradient(135deg, rgba(13,31,60,0.9) 0%, rgba(26,58,107,0.5) 100%);
  border-top: 1px solid rgba(74,158,221,0.1);
  border-bottom: 1px solid rgba(74,158,221,0.1);
}

/* Animated entrance */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(1.5rem); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up { animation: fadeUp 0.7s ease both; }
.fade-up-1 { animation-delay: 0.1s; }
.fade-up-2 { animation-delay: 0.25s; }
.fade-up-3 { animation-delay: 0.4s; }
.fade-up-4 { animation-delay: 0.55s; }

/* Twinkling stars animation */
@keyframes twinkle {
  0%, 100% { opacity: 0.4; transform: scale(0.8); }
  50%       { opacity: 1;   transform: scale(1.2); }
}

.twinkle-star {
  display: inline-block;
  animation: twinkle 2.5s ease-in-out infinite;
}

/* Orbit ring decorative */
.orbit-deco {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(74,158,221,0.1);
  pointer-events: none;
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}