/* ===========================================
   ANIMATIONS.CSS — Transitions & Preloader
   =========================================== */

/* --- Preloader --- */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
.preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.preloader-inner {
  text-align: center;
}
.preloader-spinner {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.06);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
  margin: 0 auto 20px;
}
.preloader-text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* --- Page Transition --- */
.page-transition {
  animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Keyframes --- */
@keyframes spin {
  to { transform: rotate(360deg); }
}

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

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.stagger-children > *:nth-child(1) { animation-delay: 0.05s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.1s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.15s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.2s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.25s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.3s; }

/* ========================
   SKELETON LOADERS
   ======================== */
@keyframes shimmer {
  0% { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}

.skeleton {
  display: inline-block;
  border-radius: var(--radius-sm);
  background: linear-gradient(
    90deg,
    rgba(255,255,255,0.04) 25%,
    rgba(255,255,255,0.1) 50%,
    rgba(255,255,255,0.04) 75%
  );
  background-size: 600px 100%;
  animation: shimmer 1.5s infinite linear;
}

.skeleton-card {
  background: linear-gradient(145deg, rgba(255,255,255,0.07) 0%, rgba(255,255,255,0.02) 100%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 20px;
  overflow: hidden;
}

.skeleton-img {
  width: 100%;
  height: 180px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.skeleton-title {
  height: 20px;
  width: 70%;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.skeleton-line {
  height: 12px;
  width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}

.skeleton-line.short { width: 55%; }

.skeleton-tag {
  display: inline-block;
  height: 22px;
  width: 60px;
  border-radius: 50px;
  margin-right: 6px;
  margin-top: 10px;
}

.skeleton-btn {
  height: 36px;
  width: 100px;
  border-radius: var(--radius-md);
  margin-top: 16px;
}

/* Reveal animation improvements */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform, opacity;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}