/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --gold:       #e8c87a;
  --gold-light: #f5e4a8;
  --white:      #f0eee8;
  --glow:       rgba(232, 200, 122, 0.35);
  --glass-bg:   rgba(5, 15, 35, 0.55);
  --glass-border: rgba(232, 200, 122, 0.2);
  --font-display: 'Cinzel Decorative', serif;
  --font-body:    'Cormorant Garamond', serif;
}

html, body {
  height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--white);
  overflow-x: hidden;
  background: #000;
}

/* ============================================
   BACKGROUND
   ============================================ */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    url('nasa-bg.jpg') center center / cover no-repeat;
  filter: brightness(0.75) saturate(1.1);
  z-index: 0;
  transform: scale(1.03);
  animation: subtleDrift 30s ease-in-out infinite alternate;
}

@keyframes subtleDrift {
  from { transform: scale(1.03) translate(0, 0); }
  to   { transform: scale(1.08) translate(-1%, -0.5%); }
}

/* ============================================
   STAR DUST OVERLAY
   ============================================ */
.stars {
  position: fixed;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(255,255,255,0.03) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 70%, rgba(100,160,255,0.04) 0%, transparent 60%);
  pointer-events: none;
}

/* ============================================
   LAYOUT
   ============================================ */
.hero {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem 6rem;
}

.hero__content {
  max-width: 680px;
  width: 100%;
  text-align: center;
  animation: fadeUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(36px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
.hero__eyebrow {
  font-family: var(--font-body);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  letter-spacing: 0.25em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 1s 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  line-height: 1.1;
  color: var(--white);
  text-shadow:
    0 0 60px rgba(232, 200, 122, 0.3),
    0 2px 20px rgba(0,0,0,0.8);
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: fadeUp 1s 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero__title em {
  display: block;
  font-family: var(--font-body);
  font-style: italic;
  font-weight: 300;
  font-size: 0.65em;
  color: var(--gold-light);
  letter-spacing: 0.06em;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: 300;
  line-height: 1.75;
  color: rgba(240, 238, 232, 0.78);
  max-width: 520px;
  margin: 0 auto 3rem;
  opacity: 0;
  animation: fadeUp 1s 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ============================================
   BUTTON
   ============================================ */
.fact-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1.05rem 2.8rem;
  font-family: var(--font-display);
  font-size: clamp(0.8rem, 1.8vw, 0.95rem);
  letter-spacing: 0.12em;
  color: var(--gold);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 4px;
  cursor: pointer;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: color 0.3s, background 0.3s, box-shadow 0.3s, transform 0.2s;
  overflow: hidden;
  opacity: 0;
  animation: fadeUp 1s 0.95s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fact-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(232,200,122,0.12) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}

.fact-btn:hover {
  color: var(--gold-light);
  background: rgba(232, 200, 122, 0.12);
  box-shadow: 0 0 32px var(--glow), 0 0 0 1px var(--gold);
  transform: translateY(-2px);
}

.fact-btn:hover::after { opacity: 1; }

.fact-btn:active {
  transform: translateY(0) scale(0.98);
}

/* Pulsing ring */
.fact-btn__ring {
  position: absolute;
  inset: -6px;
  border-radius: 8px;
  border: 1px solid rgba(232, 200, 122, 0.4);
  animation: pulse-ring 2.5s ease-out infinite;
  pointer-events: none;
}

@keyframes pulse-ring {
  0%   { opacity: 0.6; transform: scale(1); }
  100% { opacity: 0;   transform: scale(1.12); }
}

.fact-btn__text {
  position: relative;
  z-index: 1;
}

/* ============================================
   FACT CARD
   ============================================ */
.fact-card {
  margin-top: 2.4rem;
  padding: 1.8rem 2.2rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 8px 48px rgba(0,0,0,0.4), 0 0 0 1px rgba(232,200,122,0.08);
  text-align: left;
  animation: cardIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.fact-card__label {
  display: block;
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.fact-card__text {
  font-size: clamp(1.05rem, 2.4vw, 1.25rem);
  font-weight: 300;
  line-height: 1.7;
  color: var(--white);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 1.5rem;
  font-family: var(--font-body);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: rgba(240, 238, 232, 0.35);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 480px) {
  .fact-btn { padding: 0.9rem 2rem; }
  .fact-card { padding: 1.4rem 1.4rem; }
}