/* ============================================================
   SELLER EM FOCO — ANIMATIONS
   ============================================================ */

/* 1. ENTRANCE KEYFRAMES */
@keyframes sfFadeInUp {
  from { opacity: 0; transform: translateY(32px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes sfFadeInScale {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes sfSlideInLeft {
  from { opacity: 0; transform: translateX(-48px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes sfSlideInRight {
  from { opacity: 0; transform: translateX(48px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes sfBlurIn {
  from { opacity: 0; filter: blur(12px); transform: translateY(16px); }
  to { opacity: 1; filter: blur(0); transform: translateY(0); }
}
@keyframes sfRevealLine {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}
@keyframes sfClipReveal {
  from { clip-path: inset(0 100% 0 0); }
  to { clip-path: inset(0 0 0 0); }
}

/* 2. SCROLL ANIMATION CLASSES */
[data-sf-animate] {
  opacity: 0;
  will-change: opacity, transform;
}
[data-sf-animate].sf-visible { animation-fill-mode: both; }
[data-sf-animate="fade-up"].sf-visible { animation: sfFadeInUp 0.7s var(--sf-ease-out) both; }
[data-sf-animate="fade-scale"].sf-visible { animation: sfFadeInScale 0.7s var(--sf-ease-out) both; }
[data-sf-animate="slide-left"].sf-visible { animation: sfSlideInLeft 0.7s var(--sf-ease-out) both; }
[data-sf-animate="slide-right"].sf-visible { animation: sfSlideInRight 0.7s var(--sf-ease-out) both; }
[data-sf-animate="blur-in"].sf-visible { animation: sfBlurIn 1s var(--sf-ease-out) both; }
[data-sf-animate="reveal-line"].sf-visible { animation: sfRevealLine 0.8s var(--sf-ease-out) both; transform-origin: left center; }
[data-sf-animate="clip-reveal"].sf-visible { animation: sfClipReveal 0.9s var(--sf-ease-out) both; }

/* Stagger delays */
[data-sf-stagger] > *:nth-child(1) { --sf-stagger-delay: 0ms; }
[data-sf-stagger] > *:nth-child(2) { --sf-stagger-delay: 80ms; }
[data-sf-stagger] > *:nth-child(3) { --sf-stagger-delay: 160ms; }
[data-sf-stagger] > *:nth-child(4) { --sf-stagger-delay: 240ms; }
[data-sf-stagger] > *:nth-child(5) { --sf-stagger-delay: 320ms; }
[data-sf-stagger] > *:nth-child(6) { --sf-stagger-delay: 400ms; }
[data-sf-stagger] > *:nth-child(7) { --sf-stagger-delay: 480ms; }
[data-sf-stagger] > *:nth-child(8) { --sf-stagger-delay: 560ms; }
[data-sf-stagger] > *:nth-child(9) { --sf-stagger-delay: 640ms; }
[data-sf-stagger] > [data-sf-animate].sf-visible { animation-delay: var(--sf-stagger-delay, 0ms); }

/* 3. INTERACTIVE ANIMATIONS */
@keyframes sfGlowPulse {
  0%, 100% { box-shadow: 0 0 20px var(--sf-accent-glow), 0 0 40px rgba(255,59,48,0.10); }
  50% { box-shadow: 0 0 30px var(--sf-accent-glow), 0 0 60px rgba(255,59,48,0.15); }
}
@keyframes sfShimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes sfLightSweep {
  0% { left: -100%; }
  20% { left: 200%; }
  100% { left: 200%; }
}
@keyframes sfRipple {
  to { transform: scale(4); opacity: 0; }
}
@keyframes sfFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* 4. AMBIENT ANIMATIONS */
@keyframes sfFloatOrb {
  0% { transform: translate(0,0) scale(1); opacity: 0.3; }
  25% { transform: translate(30px,-50px) scale(1.1); opacity: 0.5; }
  50% { transform: translate(-20px,-80px) scale(0.95); opacity: 0.35; }
  75% { transform: translate(40px,-30px) scale(1.05); opacity: 0.45; }
  100% { transform: translate(0,0) scale(1); opacity: 0.3; }
}
@keyframes sfGradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes sfPulseGlow {
  0%, 100% { opacity: 0.15; transform: scale(1); }
  50% { opacity: 0.25; transform: scale(1.05); }
}

/* 5. AMBIENT ELEMENTS */
.sf-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(var(--sf-blur-xl));
  pointer-events: none;
  z-index: 0;
}
.sf-orb--accent {
  background: radial-gradient(circle, var(--sf-accent-glow) 0%, transparent 70%);
  animation: sfFloatOrb 20s ease-in-out infinite;
}
.sf-glow-spot {
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--sf-accent-glow) 0%, transparent 70%);
  filter: blur(var(--sf-blur-xl));
  pointer-events: none;
  z-index: 0;
  animation: sfPulseGlow 6s ease-in-out infinite;
}

/* 6. UTILITY CLASSES */
.sf-animate-shimmer {
  background: linear-gradient(90deg, var(--sf-surface-card) 25%, var(--sf-surface-card-hover) 50%, var(--sf-surface-card) 75%);
  background-size: 400% 100%;
  animation: sfShimmer 2s ease-in-out infinite;
}
.sf-animate-float { animation: sfFloat 3s ease-in-out infinite; }
.sf-animate-glow-pulse { animation: sfGlowPulse 2s ease-in-out infinite; }
.sf-transition-all { transition: all var(--sf-transition-base); }
.sf-transition-fast { transition: all var(--sf-transition-fast); }
.sf-transition-colors { transition: color var(--sf-transition-fast), background-color var(--sf-transition-fast), border-color var(--sf-transition-fast); }