/* ============================================================
   Research Compass — Landing Page
   AU brand: official red #E0263C / blue #004FA2 (per AU creative
   style guide). Display type: EB Garamond (open-source Garamond,
   matches AU's documented Garamond formal typeface). Body/UI type:
   Arial — AU's own documented fallback for GT Walsheim, used here
   since we don't hold a Walsheim license file.
   ============================================================ */

:root {
  --au-red:        #E0263C;
  --au-red-dim:     #b81d30;
  --au-blue:        #004FA2;
  --au-blue-dim:    #003b7a;
  --au-navy:        #182449;

  --ink:            #101826;
  --ink-muted:      #4a5568;
  --bg-page:        #ffffff;
  --bg-soft:        #eef3fa;
  --card-bg:        #edf1f7;
  --card-border:    #dde4ee;

  --font-display:   'EB Garamond', Georgia, 'Times New Roman', serif;
  --font-body:      Arial, Helvetica, sans-serif;

  --space-2: 0.5rem;  --space-3: 0.75rem; --space-4: 1rem;
  --space-6: 1.5rem;  --space-8: 2rem;    --space-10: 2.5rem;
  --space-12: 3rem;   --space-16: 4rem;   --space-20: 5rem;

  --radius-card: 1.75rem;
  --radius-pill: 999px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--au-blue);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  z-index: 100;
  font-weight: 600;
}
.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}

:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 2px;
  box-shadow: 0 0 0 5px rgba(16, 24, 38, 0.55);
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 240ms var(--ease-out), background 240ms var(--ease-out), box-shadow 240ms var(--ease-out);
}
.btn svg { transition: transform 240ms var(--ease-out); }
.btn:hover svg { transform: translateX(3px); }
.btn-primary {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
}
.btn-primary:hover {
  background: rgba(255, 255, 255, 0.24);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

/* ── Eyebrow label ── */
.eyebrow {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--au-blue);
}
.eyebrow--light { color: rgba(255, 255, 255, 0.85); }
.eyebrow-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}
.rule { width: 3.5rem; height: 1px; background: var(--au-red); flex-shrink: 0; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #060a12;
}
.hero-media { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: right center; }
.hero-scrim {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(100deg, rgba(6,10,18,0.94) 0%, rgba(6,10,18,0.72) 38%, rgba(6,10,18,0.15) 65%),
    linear-gradient(0deg, rgba(6,10,18,0.55) 0%, rgba(6,10,18,0) 30%);
}
.hero-glow {
  position: absolute;
  z-index: 2;
  width: 46vw;
  height: 46vw;
  max-width: 620px;
  max-height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(120, 170, 255, 0.20) 0%, rgba(120, 170, 255, 0.08) 45%, transparent 72%);
  filter: blur(10px);
  pointer-events: none;
  transform: translate(-50%, -50%);
  left: 50%; top: 50%;
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity 600ms var(--ease-out);
  will-change: transform;
}
.hero-glow.is-active { opacity: 1; }

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 640px;
  padding: 0 6vw;
}
.hero-logo {
  height: 42px;
  width: auto;
  margin-bottom: var(--space-10);
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.75rem, 6.2vw, 5.25rem);
  line-height: 1.03;
  letter-spacing: -0.01em;
  color: #fff;
  margin-bottom: var(--space-3);
}
.hero-tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: var(--space-6);
}
.hero-sub {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.75);
  max-width: 46ch;
  margin-bottom: var(--space-10);
}

.scroll-cue {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  color: rgba(255, 255, 255, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: border-color 200ms, color 200ms, transform 200ms var(--ease-out);
  animation: cueBob 2.4s ease-in-out infinite;
}
.scroll-cue:hover { color: #fff; border-color: rgba(255, 255, 255, 0.7); }
@keyframes cueBob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}
@media (prefers-reduced-motion: reduce) {
  .scroll-cue { animation: none; }
}

/* ============================================================
   RESOURCES / CARDS
   ============================================================ */
.resources {
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-soft) 100%);
  padding: var(--space-20) 6vw var(--space-16);
}
.resources-inner { max-width: 1240px; margin: 0 auto; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.card {
  position: relative;
  display: block;
  min-height: 420px;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: var(--space-8);
  display: flex;
  align-items: flex-end;
  isolation: isolate;
  transition: background 420ms var(--ease-out), border-color 420ms var(--ease-out), transform 300ms var(--ease-out), box-shadow 300ms var(--ease-out);
}
.card:hover, .card:focus-visible {
  background: var(--au-blue);
  border-color: var(--au-blue);
  transform: translateY(-4px);
  box-shadow: 0 20px 48px rgba(0, 40, 90, 0.28);
}

.card-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  transition: opacity 420ms var(--ease-out);
}
.card-particles--rest { opacity: 1; }
.card-particles--hover { opacity: 0; }
.card:hover .card-particles--rest,
.card:focus-visible .card-particles--rest { opacity: 0; }
.card:hover .card-particles--hover,
.card:focus-visible .card-particles--hover { opacity: 1; }

.card-body { position: relative; z-index: 1; }
.card-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 1.7vw, 1.65rem);
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: var(--space-3);
  transition: color 420ms var(--ease-out);
}
.card-text {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--ink-muted);
  max-width: 34ch;
  margin-bottom: var(--space-6);
  transition: color 420ms var(--ease-out);
}
.card-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--au-red);
  transition: color 420ms var(--ease-out), gap 200ms var(--ease-out);
}
.card-cta svg { transition: transform 240ms var(--ease-out); }
.card:hover .card-cta, .card:focus-visible .card-cta { color: #fff; }
.card:hover .card-cta svg, .card:focus-visible .card-cta svg { transform: translateX(4px); }
.card:hover .card-title, .card:focus-visible .card-title { color: #fff; }
.card:hover .card-text, .card:focus-visible .card-text { color: rgba(255, 255, 255, 0.82); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--card-border);
  padding: var(--space-12) 6vw var(--space-16);
}
.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  text-align: center;
}
.footer-logos {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
}
.footer-logo--cfe { height: 44px; width: auto; }
.footer-logo--au { height: 40px; width: auto; }
.footer-divider {
  width: 1px;
  height: 32px;
  background: var(--card-border);
}
.footer-text {
  font-size: 0.875rem;
  color: var(--ink-muted);
  max-width: 46ch;
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { transform: none; transition: opacity 300ms ease; }
}

.hero-content .reveal:nth-child(1) { transition-delay: 60ms; }
.hero-content .reveal:nth-child(2) { transition-delay: 160ms; }
.hero-content .reveal:nth-child(3) { transition-delay: 260ms; }
.hero-content .reveal:nth-child(4) { transition-delay: 360ms; }
.hero-content .reveal:nth-child(5) { transition-delay: 460ms; }

.card-grid .card:nth-child(1) { transition-delay: 0ms; }
.card-grid .card:nth-child(2) { transition-delay: 90ms; }
.card-grid .card:nth-child(3) { transition-delay: 180ms; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .card-grid { grid-template-columns: 1fr; }
  .card { min-height: 300px; }
  .resources { padding: var(--space-16) 6vw var(--space-12); }
}

@media (max-width: 700px) {
  .hero-content { padding: 0 7vw; max-width: 100%; }
  .hero-logo { height: 32px; margin-bottom: var(--space-8); }
  .hero-sub { max-width: 100%; }
  .btn-primary { width: 100%; justify-content: center; }
  .hero-glow { display: none; }
  .card { padding: var(--space-6); align-items: flex-end; }
}

@media (max-width: 420px) {
  .hero-title { font-size: 2.35rem; }
}