/* ====== MICRO-INTERACTIONS & ANIMATIONS ====== */

/* Smooth appear on scroll */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
              transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Reveal variants */
.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.stagger-children.visible > * {
  opacity: 1;
  transform: translateY(0);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.3s; }

/* ====== SMOOTH NAV LINK ACTIVE STATE ====== */
.nav a.active-section {
  color: var(--text) !important;
}

/* ====== HOVER GLOW ON CARDS ====== */
.glow-hover {
  position: relative;
  overflow: hidden;
}

.glow-hover::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), 
              rgba(255,107,53,0.06), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

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

/* ====== COUNTER ANIMATION ====== */
.counter-value {
  display: inline-block;
  font-variant-numeric: tabular-nums;
}

/* ====== SCROLL PROGRESS BAR ====== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--teal));
  z-index: 9999;
  width: 0%;
  transition: width 0.1s linear;
}

/* ====== BACK TO TOP ====== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s, transform 0.3s, background 0.2s;
  z-index: 998;
  backdrop-filter: blur(8px);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--card-hover);
  border-color: var(--orange);
}

/* ====== SMOOTH SECTION TRANSITIONS ====== */
.section {
  transition: background 0.3s ease;
}

/* ====== TOAST IMPROVEMENT ====== */
.toast {
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

/* ====== NAV SCROLL EFFECT ====== */
.nav.scrolled {
  background: rgba(11, 11, 21, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0.7rem 1.2rem;
}

/* ====== PULSE DOT ====== */
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  position: relative;
}

.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid currentColor;
  animation: pulse-ring 1.5s ease-out infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

/* ====== CARD BORDER ANIMATION ====== */
.feature-card, .viz-card, .compare-card {
  position: relative;
}

.feature-card::before, .viz-card::before, .compare-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, 
    var(--card-accent, transparent), 
    transparent 40%, 
    transparent 60%, 
    var(--card-accent, transparent));
  opacity: 0;
  transition: opacity 0.4s;
  z-index: -1;
}

.feature-card:hover::before, .viz-card:hover::before, .compare-card:hover::before {
  opacity: 0.5;
}

/* ====== LOADING SKELETON ====== */
@keyframes shimmer {
  0% { background-position: -200px 0; }
  100% { background-position: calc(200px + 100%) 0; }
}

/* ====== RESPONSIVE ANIMATIONS DISABLE ====== */
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-left, .reveal-right, .reveal-scale,
  .stagger-children > *,
  .feature-card, .viz-card, .demo-item {
    transition: none !important;
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}