/* ==========================================================================
   Animations — Keyframes, scroll-reveal classes, parallax markers
   Extends: fadeIn/slideUp/slideDown from frontend/tailwind.config.js
   ========================================================================== */

/* ---------- Keyframes ---------- */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

/* Gaming neon glow pulse */
@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 0 5px var(--accent), 0 0 15px rgba(0, 255, 136, 0.1);
  }
  50% {
    box-shadow: 0 0 15px var(--accent), 0 0 40px rgba(0, 255, 136, 0.2);
  }
}

@keyframes glowPulseText {
  0%, 100% {
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
  }
  50% {
    text-shadow: 0 0 25px rgba(0, 255, 136, 0.5);
  }
}

/* Developer terminal typing */
@keyframes typewriter {
  from { width: 0; }
  to { width: 100%; }
}

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

/* Calming breathe effect */
@keyframes breathe {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.02);
  }
}

/* Radar sweep (gaming) */
@keyframes radarSweep {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Slow drift for decorative elements */
@keyframes drift {
  0%, 100% {
    transform: translate(0, 0);
  }
  25% {
    transform: translate(10px, -10px);
  }
  50% {
    transform: translate(-5px, -20px);
  }
  75% {
    transform: translate(-15px, -5px);
  }
}

/* Gentle vertical bob (porthole sun, decorative elements) */
@keyframes sun-bob {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-2px); }
}

/* Cloud drift across scene (porthole illustrations) */
@keyframes cloud-drift-right {
  0%   { transform: translateX(-200px); opacity: 0; }
  5%   { opacity: 1; }
  95%  { opacity: 1; }
  100% { transform: translateX(500px); opacity: 0; }
}

@keyframes cloud-drift-left {
  0%   { transform: translateX(500px); opacity: 0; }
  5%   { opacity: 1; }
  95%  { opacity: 1; }
  100% { transform: translateX(-200px); opacity: 0; }
}

/* Gradient shift for backgrounds */
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ---------- Scroll Reveal Classes ---------- */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
  will-change: opacity, transform;
}

.reveal--left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
  will-change: opacity, transform;
}

.reveal--right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
  will-change: opacity, transform;
}

.reveal--scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
  will-change: opacity, transform;
}

/* Triggered state — added by scroll-animator.js */
.revealed {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger delays */
.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }

/* ---------- Utility Animation Classes ---------- */

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

.animate-breathe {
  animation: breathe 8s ease-in-out infinite;
}

.animate-glow-pulse {
  animation: glowPulse 2s ease-in-out infinite;
}

.animate-drift {
  animation: drift 20s ease-in-out infinite;
}

.animate-gradient {
  background-size: 200% 200%;
  animation: gradientShift 8s ease infinite;
}

/* Blink cursor for terminal effects */
.cursor-blink::after {
  content: '█';
  animation: blink 1s step-end infinite;
  color: var(--accent);
}