/* ============================================
   TrackFlow — Animations & Transitions
   ============================================ */

/* ---------- Keyframes ---------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  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 scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes scaleOut {
  from { opacity: 1; transform: scale(1); }
  to { opacity: 0; transform: scale(0.95); }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(99, 102, 241, 0); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@keyframes timerPulse {
  0%, 100% { 
    transform: scale(1); 
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.3);
  }
  50% { 
    transform: scale(1.02); 
    box-shadow: 0 0 0 6px rgba(34, 197, 94, 0);
  }
}

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

@keyframes progressGlow {
  0% { filter: brightness(1); }
  50% { filter: brightness(1.3); }
  100% { filter: brightness(1); }
}

@keyframes dotPulse {
  0%, 80%, 100% { transform: scale(0); opacity: 0; }
  40% { transform: scale(1); opacity: 1; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes borderGlow {
  0%, 100% { border-color: var(--border-primary); }
  50% { border-color: var(--accent-primary); }
}

/* ---------- Background Animations ---------- */
@keyframes backgroundFloat {
  0% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(120deg); }
  66% { transform: translate(-20px, 20px) rotate(240deg); }
  100% { transform: translate(0, 0) rotate(360deg); }
}

@keyframes gridFade {
  0% { opacity: 0.02; }
  50% { opacity: 0.05; }
  100% { opacity: 0.02; }
}

/* ---------- Utility Animation Classes ---------- */
.animate-fadeIn { animation: fadeIn var(--transition-base) both; }
.animate-slideUp { animation: slideUp var(--transition-base) both; }
.animate-slideDown { animation: slideDown var(--transition-base) both; }
.animate-scaleIn { animation: scaleIn var(--transition-base) both; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-bounce { animation: bounce 1s ease-in-out infinite; }

/* Staggered animations for lists */
.stagger-1 { animation-delay: 50ms; }
.stagger-2 { animation-delay: 100ms; }
.stagger-3 { animation-delay: 150ms; }
.stagger-4 { animation-delay: 200ms; }
.stagger-5 { animation-delay: 250ms; }
.stagger-6 { animation-delay: 300ms; }
.stagger-7 { animation-delay: 350ms; }
.stagger-8 { animation-delay: 400ms; }

/* ---------- Page Transition ---------- */
.page-enter {
  animation: fadeIn 200ms ease-out, slideUp 200ms ease-out;
}

/* ---------- Timer-Specific Animations ---------- */
.timer-running {
  animation: timerPulse 2s ease-in-out infinite;
}

.timer-digit {
  display: inline-block;
  transition: transform var(--transition-fast);
}

.timer-colon {
  animation: pulse 1s ease-in-out infinite;
}

/* ---------- Loading Dots ---------- */
.loading-dots {
  display: flex;
  gap: 4px;
  align-items: center;
}

.loading-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary);
  animation: dotPulse 1.4s ease-in-out infinite;
}

.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }

/* ---------- Spinner ---------- */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-primary);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 3px;
}