/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(36px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-36px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(36px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes float {
  0%, 100% { transform: translateY(0) translateX(-50%); }
  50%       { transform: translateY(-10px) translateX(-50%); }
}
@keyframes floatSimple {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}
@keyframes borderPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37,99,235,0.3); }
  50%       { box-shadow: 0 0 0 8px rgba(37,99,235,0); }
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   SCROLL REVEAL BASE STATES
   ============================================================ */
.reveal        { opacity: 0; transform: translateY(36px);  transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal-left   { opacity: 0; transform: translateX(-36px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal-right  { opacity: 0; transform: translateX(36px);  transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal-scale  { opacity: 0; transform: scale(0.94);       transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal-fade   { opacity: 0;                                transition: opacity 0.7s ease; }

/* Triggered state */
.reveal.visible,
.reveal-left.visible,
.reveal-right.visible,
.reveal-scale.visible,
.reveal-fade.visible { opacity: 1; transform: none; }

/* Stagger delays */
.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }
.delay-4 { transition-delay: 0.32s; }
.delay-5 { transition-delay: 0.40s; }
.delay-6 { transition-delay: 0.48s; }

/* Hero entrance (CSS, no JS needed) */
.hero-animate         { animation: fadeInUp 0.75s ease both; }
.hero-animate.delay-1 { animation-delay: 0.12s; }
.hero-animate.delay-2 { animation-delay: 0.28s; }
.hero-animate.delay-3 { animation-delay: 0.44s; }
.hero-animate.delay-4 { animation-delay: 0.60s; }

/* Float utility */
.float-anim { animation: floatSimple 6s ease-in-out infinite; }

/* Shimmer loading */
.shimmer {
  background: linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-elevated) 50%, var(--bg-surface) 75%);
  background-size: 200% auto;
  animation: shimmer 1.5s linear infinite;
}

/* Hover lift */
.hover-lift { transition: transform var(--transition-slow), box-shadow var(--transition-slow); }
.hover-lift:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }

/* Glow border pulse */
.glow-pulse { animation: borderPulse 2.5s ease-in-out infinite; }