/* ===== ANIMATIONS.CSS ===== */

/* Reveal on scroll */
[data-reveal] {
  opacity: 0;
  transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}

[data-reveal="fade-up"] { transform: translateY(40px); }
[data-reveal="fade-down"] { transform: translateY(-40px); }
[data-reveal="fade-left"] { transform: translateX(-40px); }
[data-reveal="fade-right"] { transform: translateX(40px); }
[data-reveal="scale"] { transform: scale(0.9); }
[data-reveal="fade"] {}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger delays */
[data-delay="100"] { transition-delay: 0.1s; }
[data-delay="150"] { transition-delay: 0.15s; }
[data-delay="200"] { transition-delay: 0.2s; }
[data-delay="300"] { transition-delay: 0.3s; }
[data-delay="400"] { transition-delay: 0.4s; }
[data-delay="500"] { transition-delay: 0.5s; }
[data-delay="600"] { transition-delay: 0.6s; }
[data-delay="700"] { transition-delay: 0.7s; }
[data-delay="800"] { transition-delay: 0.8s; }

/* Gradient border animated */
.glow-border {
  position: relative;
}

.glow-border::after {
  content: '';
  position: absolute;
  inset: -1px;
  background: linear-gradient(135deg, #1DA1F2, #0A6FBF, #1DA1F2);
  border-radius: inherit;
  z-index: -1;
  background-size: 200% 200%;
  animation: gradientShift 4s ease infinite;
  opacity: 0;
  transition: opacity 0.4s;
}

.glow-border:hover::after { opacity: 1; }

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

/* Shimmer loading */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.shimmer {
  background: linear-gradient(90deg, transparent 25%, rgba(29,161,242,0.08) 50%, transparent 75%);
  background-size: 200% 100%;
  animation: shimmer 2.5s ease-in-out infinite;
}

/* Number counter flash */
@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Floating particles */
.particle {
  position: absolute;
  width: 4px; height: 4px;
  background: var(--blue-main);
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  animation: particleFly 8s ease-in-out infinite;
}

@keyframes particleFly {
  0% { opacity: 0; transform: translateY(100px) scale(0); }
  20% { opacity: 0.6; }
  80% { opacity: 0.3; }
  100% { opacity: 0; transform: translateY(-200px) scale(1.5); }
}

/* Hero orb */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  animation: orbPulse 6s ease-in-out infinite;
}

@keyframes orbPulse {
  0%,100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.1); }
}

/* Typing cursor blink handled inline */

/* Card tilt effect - JS-driven */
.tilt-card { transform-style: preserve-3d; }

/* Loading spinner */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

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

/* Page load fade */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--bg-main);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-logo { animation: loaderPulse 1.2s ease-in-out infinite; }

@keyframes loaderPulse {
  0%,100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.05); opacity: 1; }
}

/* Underline hover effect */
.hover-underline {
  position: relative;
  display: inline-block;
}

.hover-underline::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 100%; height: 1px;
  background: var(--blue-main);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
}

.hover-underline:hover::after { transform: scaleX(1); transform-origin: left; }

/* Progress bar */
#read-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: var(--blue-grad);
  z-index: 9999;
  transition: width 0.1s linear;
  width: 0%;
}