/* ==========================================================================
   EUROPA ACCOUNTANCY - ADVANCED UI ANIMATIONS & MICRO-INTERACTIONS
   ========================================================================== */

/* 1. KEYFRAME DEFINITIONS */
@keyframes floatSlow {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-12px) rotate(1deg);
  }
}

@keyframes floatReverse {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(10px) rotate(-1deg);
  }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(197, 155, 95, 0.4);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(197, 155, 95, 0);
  }
}

@keyframes logoShine {
  0% {
    transform: translateX(-100%) rotate(45deg);
  }
  20%, 100% {
    transform: translateX(100%) rotate(45deg);
  }
}

@keyframes shimmerEffect {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

@keyframes gradientMesh {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes ripple {
  0% {
    transform: scale(0.8);
    opacity: 1;
  }
  100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

/* 2. SCROLL REVEAL UTILITIES */
.reveal-init {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.revealed {
  opacity: 1 !important;
  transform: translate(0, 0) scale(1) !important;
}

/* Stagger Delays */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }
.delay-600 { transition-delay: 600ms; }

/* 3. HOVER & MICRO-INTERACTIONS */
.hover-lift {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.08);
}

.hover-glow {
  transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
  box-shadow: 0 0 25px rgba(197, 155, 95, 0.4);
}

/* Button Shimmer */
.btn-shimmer {
  position: relative;
  overflow: hidden;
}

.btn-shimmer::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    60deg,
    rgba(255, 255, 255, 0) 20%,
    rgba(255, 255, 255, 0.25) 50%,
    rgba(255, 255, 255, 0) 80%
  );
  transform: rotate(25deg);
  transition: all 0.75s ease;
  opacity: 0;
}

.btn-shimmer:hover::after {
  left: 100%;
  opacity: 1;
  transition: all 0.75s ease;
}

/* Pulse badge dot */
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  position: relative;
  display: inline-block;
}

.pulse-dot::before {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.4);
  animation: ripple 1.8s infinite ease-out;
}

/* Progress bar along top of screen */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gold-gradient);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s ease-out;
}

/* Custom back to top button with animation */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-heading);
  cursor: pointer;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-smooth);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--gold-primary);
  color: #FFFFFF;
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
}