:root {
  --bg: #0a0012;
  --bg-alt: rgba(23, 10, 44, 0.55);
  --text: #f3ecfb;
  --muted: #a394bf;
  --pink: #ff2ec4;
  --blue: #00e5ff;
  --border: #2f1c4a;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  position: relative;
  overflow-x: hidden;
}

/* ambient drifting glow, purely decorative */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(600px circle at 15% 10%, rgba(255, 46, 196, 0.16), transparent 60%),
    radial-gradient(700px circle at 85% 30%, rgba(0, 229, 255, 0.12), transparent 60%),
    radial-gradient(900px circle at 50% 100%, rgba(255, 46, 196, 0.08), transparent 60%);
  animation: drift 22s ease-in-out infinite alternate;
}

@keyframes drift {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(1%, -2%, 0) scale(1.05); }
}

/* nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: rgba(9, 1, 18, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand {
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  position: relative;
  transition: text-shadow 0.25s ease, color 0.25s ease;
}

.brand:hover {
  color: var(--text);
  text-shadow: 0 0 12px rgba(255, 46, 196, 0.55), 0 0 24px rgba(0, 229, 255, 0.35);
}

.nav-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  position: relative;
  padding-bottom: 0.25rem;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--pink), var(--blue));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.nav-links a.active {
  color: var(--text);
}

/* hero */
.hero {
  position: relative;
  text-align: center;
  padding: 4.5rem 1.25rem 3rem;
}

.hero-title {
  margin: 0 0 0.75rem;
  font-size: clamp(2.1rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  background: linear-gradient(100deg, var(--pink), var(--blue), var(--pink));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 18px rgba(255, 46, 196, 0.28)) drop-shadow(0 0 26px rgba(0, 229, 255, 0.18));
  animation: shimmer 7s ease-in-out infinite alternate;
}

@keyframes shimmer {
  0% { background-position: 0% center; }
  100% { background-position: 100% center; }
}

.hero p {
  max-width: 520px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(0.95rem, 2.5vw, 1.05rem);
  padding: 0 0.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
  width: 100%;
}

.hero-actions .btn {
  flex: 0 1 auto;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.7rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid rgba(255, 46, 196, 0.45);
  color: var(--text);
  background: rgba(255, 46, 196, 0.06);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
  box-shadow: 0 0 18px rgba(255, 46, 196, 0.3), 0 0 30px rgba(0, 229, 255, 0.18);
}

.btn-primary {
  color: #0a0012;
  background: linear-gradient(100deg, var(--pink), var(--blue));
  border-color: transparent;
  box-shadow: 0 0 20px rgba(255, 46, 196, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 0 24px rgba(255, 46, 196, 0.4), 0 0 36px rgba(0, 229, 255, 0.28);
}

/* content */
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 1rem 1.25rem 3rem;
  position: relative;
}

.card {
  position: relative;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0)), var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 1.5rem;
  right: 1.5rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--pink), var(--blue), transparent);
  opacity: 0.55;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 46, 196, 0.35);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35), 0 0 24px rgba(0, 229, 255, 0.08);
}

.card h2 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.9rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.card h2::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--pink), var(--blue));
  box-shadow: 0 0 8px rgba(255, 46, 196, 0.7);
  flex-shrink: 0;
}

.card p,
.card ul {
  color: var(--text);
  margin: 0;
}

.card p + p,
.card ul {
  margin-top: 0.85rem;
}

.card ul {
  padding-left: 1.1rem;
}

.card li {
  margin-bottom: 0.4rem;
}

.card li::marker {
  color: var(--pink);
}

a {
  color: var(--pink);
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

a:hover {
  color: var(--blue);
  text-shadow: 0 0 8px rgba(0, 229, 255, 0.45);
}

.callout {
  position: relative;
  background: rgba(255, 46, 196, 0.06);
  border: 1px solid var(--border);
  border-left: 3px solid var(--pink);
  border-radius: 10px;
  padding: 1.1rem 1.4rem;
  font-weight: 600;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.75rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
}

.back-link:hover {
  color: var(--blue);
}

/* footer */
footer {
  text-align: center;
  padding: 2.25rem 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

footer a {
  color: var(--muted);
}

/* scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .bg-glow,
  .hero-title {
    animation: none;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@media (max-width: 640px) {
  .nav {
    flex-direction: column;
    justify-content: center;
    text-align: center;
    padding: 0.85rem 1rem;
    gap: 0.6rem;
  }

  .nav-links {
    width: 100%;
    gap: 0.85rem 1.1rem;
    font-size: 0.9rem;
  }

  .hero {
    padding: 3rem 1rem 2.25rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .card {
    padding: 1.25rem;
    border-radius: 12px;
  }

  .card h2 {
    font-size: 1rem;
  }

  main {
    padding: 0.75rem 1rem 2.5rem;
  }
}

@media (max-width: 400px) {
  .brand {
    font-size: 1.05rem;
  }

  .nav-links {
    gap: 0.7rem 0.9rem;
    font-size: 0.85rem;
  }

  .hero-title {
    font-size: clamp(1.75rem, 8vw, 2.25rem);
  }

  .btn {
    padding: 0.7rem 1.3rem;
    font-size: 0.9rem;
  }
}