/* ============================================================
   Zemzeme Website — animations.css
   Scroll-triggered reveals, glow pulses, and transitions
   ============================================================ */

/* ── Keyframes ── */

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.8); }
}

@keyframes bounce-arrow {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50%       { transform: rotate(45deg) translateY(6px); }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 8px rgba(0, 229, 255, 0.2), 0 0 24px rgba(0, 229, 255, 0.08); }
  50%       { box-shadow: 0 0 16px rgba(0, 229, 255, 0.4), 0 0 48px rgba(0, 229, 255, 0.15); }
}

@keyframes glow-text-pulse {
  0%, 100% { text-shadow: 0 0 20px rgba(0, 229, 255, 0.3); }
  50%       { text-shadow: 0 0 40px rgba(0, 229, 255, 0.6); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

@keyframes float-slow {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50%       { transform: translateY(-8px) rotate(2deg); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in-down {
  from { opacity: 0; transform: translateY(-32px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in-left {
  from { opacity: 0; transform: translateX(-32px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fade-in-right {
  from { opacity: 0; transform: translateX(32px); }
  to   { opacity: 1; transform: translateX(0); }
}

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

@keyframes slide-in-bottom {
  from { opacity: 0; transform: translateY(60px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes count-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes border-glow {
  0%, 100% { border-color: rgba(0, 229, 255, 0.2); }
  50%       { border-color: rgba(0, 229, 255, 0.5); }
}

@keyframes particle-drift {
  0%   { transform: translate(0, 0) rotate(0deg); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translate(var(--tx, 100px), var(--ty, -200px)) rotate(360deg); opacity: 0; }
}

@keyframes line-draw {
  from { stroke-dashoffset: 1000; }
  to   { stroke-dashoffset: 0; }
}

/* ── Scroll reveal base states ── */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-28px);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(28px);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Stagger delays for child elements */
.stagger > *:nth-child(1) { transition-delay: 0ms; }
.stagger > *:nth-child(2) { transition-delay: 80ms; }
.stagger > *:nth-child(3) { transition-delay: 160ms; }
.stagger > *:nth-child(4) { transition-delay: 240ms; }
.stagger > *:nth-child(5) { transition-delay: 320ms; }
.stagger > *:nth-child(6) { transition-delay: 400ms; }

/* Explicit delay utilities */
.delay-100  { transition-delay: 100ms !important; }
.delay-200  { transition-delay: 200ms !important; }
.delay-300  { transition-delay: 300ms !important; }
.delay-400  { transition-delay: 400ms !important; }
.delay-500  { transition-delay: 500ms !important; }
.delay-600  { transition-delay: 600ms !important; }

/* ── Hero entrance animations ── */

.hero-animate-1 {
  animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
}

.hero-animate-2 {
  animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.25s both;
}

.hero-animate-3 {
  animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}

.hero-animate-4 {
  animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.55s both;
}

.hero-animate-5 {
  animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.7s both;
}

/* ── Glow animations on active elements ── */

.glow-pulse {
  animation: glow-pulse 3s ease-in-out infinite;
}

.float-anim {
  animation: float 6s ease-in-out infinite;
}

.float-slow-anim {
  animation: float-slow 8s ease-in-out infinite;
}

/* ── Shimmer effect (for loading/highlight states) ── */

.shimmer {
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0, 229, 255, 0.1) 50%,
    transparent 100%
  );
  background-size: 200% auto;
  animation: shimmer 2.5s linear infinite;
}

/* ── Gradient text animation ── */

.gradient-text {
  background: linear-gradient(
    90deg,
    #FFFFFF 0%,
    #00E5FF 30%,
    #FFFFFF 60%,
    #00E5FF 90%,
    #FFFFFF 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 4s linear infinite;
}

/* ── Border glow animation ── */

.border-glow-anim {
  animation: border-glow 3s ease-in-out infinite;
}

/* ── Connection line diagram animations ── */

.diagram-line {
  stroke: var(--accent);
  stroke-width: 2;
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  opacity: 0.4;
  fill: none;
}

.diagram-line.animated {
  animation: line-draw 1.5s ease forwards;
}

/* ── Layer diagram ── */

.layer-flow {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-xl);
}

.layer-flow__item {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateX(-20px);
}

.layer-flow__item.visible {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.5s ease var(--flow-delay, 0s),
              transform 0.5s ease var(--flow-delay, 0s),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}

.layer-flow__item:hover {
  border-color: var(--border);
  box-shadow: var(--glow-sm);
}

.layer-flow__item:nth-child(1) { --flow-delay: 0s; }
.layer-flow__item:nth-child(2) { --flow-delay: 0.15s; }
.layer-flow__item:nth-child(3) { --flow-delay: 0.3s; }

.layer-flow__connector {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 20px;
  opacity: 0.5;
  padding: var(--space-xs) 0;
}

.layer-flow__icon {
  font-size: 28px;
  width: 48px;
  flex-shrink: 0;
  text-align: center;
}

.layer-flow__info h4 {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: 2px;
}

.layer-flow__info p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.layer-flow__status {
  margin-left: auto;
  flex-shrink: 0;
}

/* ── Particles / ambient background ── */

.ambient-particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  animation: particle-drift 12s linear infinite;
}

/* ── Number counter reveal ── */

.counter-num {
  display: inline-block;
  animation: count-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* ── Page transition ── */

.page-fade-in {
  animation: fade-in 0.4s ease both;
}

/* ── Reduce motion ── */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1 !important;
    transform: none !important;
  }

  .layer-flow__item {
    opacity: 1 !important;
    transform: none !important;
  }
}