/* animations.css — @keyframes + utility classes */

/* ── Keyframes ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

@keyframes spin {
  0% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(1.15); }
  100% { transform: rotate(360deg) scale(1); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px rgba(59, 130, 246, 0.3); }
  50% { box-shadow: 0 0 20px rgba(59, 130, 246, 0.6); }
}

@keyframes confetti-fall {
  0% { transform: translateY(-100vh) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

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

/* ── Utility classes ── */
.anim-fade-in {
  animation: fadeIn 0.5s ease both;
}

.anim-slide-in {
  animation: slideIn 0.5s ease both;
}

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

.anim-shake {
  animation: shake 0.5s ease;
}

.anim-spin {
  animation: spin 1s ease-in-out;
}

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

.anim-float {
  animation: float 3s ease-in-out infinite;
}

/* ── Staggered entrance delays ── */
.anim-delay-1 { animation-delay: 0.1s; }
.anim-delay-2 { animation-delay: 0.2s; }
.anim-delay-3 { animation-delay: 0.3s; }
.anim-delay-4 { animation-delay: 0.4s; }
.anim-delay-5 { animation-delay: 0.5s; }

/* ── Transition utilities ── */
.transition-all {
  transition: all var(--transition-base);
}

.transition-transform {
  transition: transform var(--transition-fast);
}

.hover-lift:hover {
  transform: translateY(-4px);
}

.hover-scale:hover {
  transform: scale(1.05);
}

/* ── Hover effects for index page ── */

/* Card tilt on hover */
.card {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  transform-style: preserve-3d;
  position: relative;
}

.card:hover {
  transform: translateY(-6px) perspective(800px) rotateX(2deg) rotateY(-2deg);
  box-shadow: 0 16px 48px rgba(59, 130, 246, 0.15), 0 0 0 1px rgba(255, 255, 255, 0.08);
}

/* Button shimmer/glow on hover */
.btn {
  position: relative;
  overflow: hidden;
}

.btn:hover {
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3), 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transition: left 0.5s ease;
  pointer-events: none;
}

.btn:hover::after {
  left: 100%;
}

/* Subtle card border glow */
.card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0), rgba(168, 85, 247, 0));
  z-index: -1;
  transition: background var(--transition-base);
  pointer-events: none;
}

.card:hover::before {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(168, 85, 247, 0.2));
}