/* =============================================
   ANIMATIONS — Keyframes, scroll reveals, hero entrance
   All transitions respect prefers-reduced-motion.
   ============================================= */

/* ─── Hero Background Gradient Blobs ───────── */
.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: blob-drift 14s ease-in-out infinite;
}

.hero-blob-1 {
  width: clamp(300px, 40vw, 600px);
  height: clamp(300px, 40vw, 600px);
  background: oklch(0.65 0.14 265 / 0.25);
  top: -15%;
  left: -10%;
  animation-delay: 0s;
  animation-duration: 16s;
}

.hero-blob-2 {
  width: clamp(250px, 35vw, 500px);
  height: clamp(250px, 35vw, 500px);
  background: oklch(0.72 0.16 200 / 0.2);
  top: 20%;
  right: -8%;
  animation-delay: -5s;
  animation-duration: 20s;
}

.hero-blob-3 {
  width: clamp(200px, 28vw, 400px);
  height: clamp(200px, 28vw, 400px);
  background: oklch(0.62 0.13 295 / 0.2);
  bottom: 0%;
  left: 30%;
  animation-delay: -10s;
  animation-duration: 18s;
}

@keyframes blob-drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -25px) scale(1.05); }
  66%       { transform: translate(-20px, 15px) scale(0.96); }
}

/* ─── Noise texture overlay ─────────────────── */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  background-size: 200px;
  opacity: 0.4;
  pointer-events: none;
}

/* ─── Grid overlay (subtle, bg only) ───────── */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(oklch(0.30 0.005 250 / 0.12) 1px, transparent 1px),
    linear-gradient(90deg, oklch(0.30 0.005 250 / 0.12) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
  z-index: 0;
  pointer-events: none;
}

/* ─── Scroll Indicator ──────────────────────── */
@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.6; }
  50%       { transform: translateX(-50%) translateY(6px); opacity: 1; }
}

/* ─── Pulse dot (hero badge) ────────────────── */
@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%       { transform: scale(1.4); opacity: 0.6; }
}

/* ─── Hero Entrance Stagger ─────────────────── */
.hero-badge,
.hero-title,
.hero-subtitle,
.hero-cta {
  opacity: 0;
  transform: translateY(20px);
}

.hero-badge    { animation: hero-enter var(--duration-enter) var(--ease-out-expo) 0.1s forwards; }
.hero-title    { animation: hero-enter var(--duration-enter) var(--ease-out-expo) 0.25s forwards; }
.hero-subtitle { animation: hero-enter var(--duration-enter) var(--ease-out-expo) 0.4s forwards; }
.hero-cta      { animation: hero-enter var(--duration-enter) var(--ease-out-expo) 0.55s forwards; }

@keyframes hero-enter {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Scroll Reveal ─────────────────────────── */
/* Default: elements are visible. Reveal class adds polish when JS runs. */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--duration-slow) var(--ease-out-quart),
    transform var(--duration-slow) var(--ease-out-quart);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }

/* ─── Reduced Motion Overrides ──────────────── */
@media (prefers-reduced-motion: reduce) {
  .hero-blob {
    animation: none;
  }

  .hero-badge,
  .hero-title,
  .hero-subtitle,
  .hero-cta {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  @keyframes scroll-bounce { 0%, 100% { transform: translateX(-50%); } }
  @keyframes pulse-dot      { 0%, 100% { transform: scale(1); } }
  @keyframes blob-drift     { 0%, 100% { transform: none; } }
}