/* ============================================
   Cloud Pratica — Animations
   ============================================ */

/* ── Fade In Variants ── */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Staggered children */
.stagger-children .fade-in:nth-child(1) { transition-delay: 0ms; }
.stagger-children .fade-in:nth-child(2) { transition-delay: 100ms; }
.stagger-children .fade-in:nth-child(3) { transition-delay: 200ms; }
.stagger-children .fade-in:nth-child(4) { transition-delay: 300ms; }
.stagger-children .fade-in:nth-child(5) { transition-delay: 400ms; }
.stagger-children .fade-in:nth-child(6) { transition-delay: 500ms; }
.stagger-children .fade-in:nth-child(7) { transition-delay: 600ms; }
.stagger-children .fade-in:nth-child(8) { transition-delay: 700ms; }
.stagger-children .fade-in:nth-child(9) { transition-delay: 800ms; }
.stagger-children .fade-in:nth-child(10) { transition-delay: 900ms; }
.stagger-children .fade-in:nth-child(11) { transition-delay: 1000ms; }
.stagger-children .fade-in:nth-child(12) { transition-delay: 1100ms; }

/* ── Glow Pulse ── */
@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 20px rgba(107, 163, 247, 0.1); }
  50% { box-shadow: 0 0 40px rgba(107, 163, 247, 0.25); }
}

.glow-pulse {
  animation: glow-pulse 3s ease-in-out infinite;
}

/* ── Star Twinkle (for logo accent) ── */
@keyframes twinkle {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.twinkle {
  animation: twinkle 2s ease-in-out infinite;
}

/* ── Float ── */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.float {
  animation: float 6s ease-in-out infinite;
}

/* ── Particle Background (CSS-only, no JS DOM manipulation) ── */
.particles-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  contain: strict;
}

.particles-container::before,
.particles-container::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
}

.particles-container::before {
  background-image:
    radial-gradient(1.5px 1.5px at 10% 20%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(2px 2px at 25% 55%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1px 1px at 40% 15%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 55% 70%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(2px 2px at 70% 35%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1px 1px at 85% 60%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 15% 80%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1px 1px at 60% 90%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(2px 2px at 90% 10%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 35% 45%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1px 1px at 50% 30%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 75% 85%, var(--color-accent) 50%, transparent 50%);
  animation: css-particle-drift-1 12s ease-in-out infinite alternate;
}

.particles-container::after {
  background-image:
    radial-gradient(1px 1px at 5% 40%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(2px 2px at 20% 75%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 45% 10%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1px 1px at 65% 50%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(2px 2px at 80% 25%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 95% 65%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1px 1px at 30% 95%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 50% 60%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(1px 1px at 72% 78%, var(--color-accent) 50%, transparent 50%),
    radial-gradient(2px 2px at 18% 35%, var(--color-accent) 50%, transparent 50%);
  animation: css-particle-drift-2 15s ease-in-out infinite alternate;
}

@keyframes css-particle-drift-1 {
  0%   { transform: translateY(0) translateX(0); opacity: 0.4; }
  50%  { opacity: 0.7; }
  100% { transform: translateY(-30px) translateX(15px); opacity: 0.3; }
}

@keyframes css-particle-drift-2 {
  0%   { transform: translateY(0) translateX(0); opacity: 0.3; }
  50%  { opacity: 0.6; }
  100% { transform: translateY(-20px) translateX(-10px); opacity: 0.4; }
}

/* ── Grid Line Background ── */
.grid-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(107, 163, 247, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(107, 163, 247, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* ── Gradient Orbs ── */
.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.3;
  will-change: transform;
  contain: strict;
}

.gradient-orb--blue {
  background: var(--color-brand-primary);
}

.gradient-orb--cyan {
  background: var(--color-accent);
}

/* ── Count up animation (handled in JS, CSS for shimmer) ── */
.count-up {
  display: inline-block;
}

/* ── Typing Effect ── */
@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: var(--color-accent); }
}

.typing-cursor::after {
  content: '|';
  color: var(--color-accent);
  animation: blink-caret 0.75s step-end infinite;
  margin-left: 2px;
}

/* ── Line Draw ── */
@keyframes line-draw {
  to { stroke-dashoffset: 0; }
}

/* ── Hero: Instant display (above the fold) ── */
.hero .fade-in,
.hero .fade-in-scale {
  opacity: 1;
  transform: none;
  transition: none;
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  .fade-in,
  .fade-in-left,
  .fade-in-right,
  .fade-in-scale {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .glow-pulse,
  .twinkle,
  .float,
  .particles-container::before,
  .particles-container::after {
    animation: none;
  }
}