/* ============================================================
   ZhuMobile — Animations CSS
   ============================================================ */

/* ── Loader ── */
#loader {
  position: fixed;
  inset: 0;
  background: var(--clr-loader-bg);
  z-index: var(--z-loader);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 24px;
  transition: opacity 0.9s var(--ease), visibility 0.9s;
}
#loader.out {
  opacity: 0;
  visibility: hidden;
}
#loader-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
#loader-label {
  position: relative;
  z-index: 2;
  font-family: var(--f-brand);
  font-size: clamp(0.5rem, 1.2vw, 0.65rem);
  letter-spacing: 0.5em;
  color: var(--clr-orange);
  text-transform: uppercase;
  opacity: 0.8;
}
#loader-bar-wrap {
  position: relative;
  z-index: 2;
  width: min(260px, 60vw);
  height: 1px;
  background: rgba(244, 123, 32, 0.15);
  overflow: hidden;
}
#loader-bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--clr-orange-dark), var(--clr-orange-light));
  transition: width 0.08s linear;
}

/* ── Reading Progress Bar ── */
#read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--clr-orange-dark), var(--clr-orange-light));
  z-index: calc(var(--z-nav) + 1);
  pointer-events: none;
  transition: width 0.08s linear;
}

/* ── Custom Cursor ── */
#cursor {
  position: fixed;
  width: 10px;
  height: 10px;
  background: var(--clr-orange);
  border-radius: 50%;
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  transition: width 0.2s var(--ease), height 0.2s var(--ease), background 0.2s;
  mix-blend-mode: normal;
}
#cursor-trail {
  position: fixed;
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--clr-orange-a35);
  border-radius: 50%;
  pointer-events: none;
  z-index: calc(var(--z-cursor) - 1);
  transform: translate(-50%, -50%);
  transition: border-color 0.3s;
}

/* ── Hero Entrance Keyframes ── */
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: none; }
}
@keyframes heroFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.hero-eyebrow   { animation: heroFadeUp 0.9s 0.8s both; }
.hero-headline  { animation: heroFadeUp 0.9s 1.0s both; }
.hero-sub       { animation: heroFadeUp 0.9s 1.2s both; }
.hero-desc      { animation: heroFadeUp 0.9s 1.4s both; }
.hero-cta       { animation: heroFadeUp 0.9s 1.6s both; }
.hero-stats     { animation: heroFadeUp 0.9s 1.8s both; }
.hero-scroll    { animation: heroFadeIn 1s 2.2s both; }

/* ── Scroll Wheel Animation ── */
@keyframes scrollWheel {
  0%   { transform: translateY(0); opacity: 1; }
  60%  { transform: translateY(8px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}
.scroll-wheel-dot { animation: scrollWheel 2s infinite; }

/* ── Section Reveal (used by IntersectionObserver) ── */
.reveal-ready {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal-ready.revealed {
  opacity: 1;
  transform: none;
}
.reveal-ready.delay-1 { transition-delay: 0.08s; }
.reveal-ready.delay-2 { transition-delay: 0.16s; }
.reveal-ready.delay-3 { transition-delay: 0.24s; }
.reveal-ready.delay-4 { transition-delay: 0.32s; }
.reveal-ready.delay-5 { transition-delay: 0.40s; }

/* ── Card Hover Lift ── */
.card {
  transition:
    transform    var(--dur-mid) var(--ease),
    box-shadow   var(--dur-mid) var(--ease),
    border-color var(--dur-mid) var(--ease);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--clr-card-hover);
}

/* ── Magnetic Button Effect ── */
.btn-primary, .btn-secondary {
  position: relative;
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.btn-primary::before, .btn-secondary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.18);
  transform: translateX(-110%);
  transition: transform 0.45s var(--ease);
}
.btn-primary:hover::before, .btn-secondary:hover::before {
  transform: translateX(0);
}

/* ── Animated Underline for Nav Links ── */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--clr-orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
  border-radius: 2px;
}
.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* ── Section Divider Line ── */
.section-divider {
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-orange), var(--clr-orange-light));
  border-radius: 2px;
  transition: width 0.7s 0.2s var(--ease);
}
.section-divider.revealed { width: 56px; }

/* ── Counter Animation ── */
.counter-value {
  display: inline-block;
  transition: color 0.3s;
}

/* ── FAQ Accordion ── */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease), padding 0.3s var(--ease);
}
.faq-answer.open { max-height: 600px; }
.faq-icon {
  transition: transform 0.35s var(--ease);
}
.faq-item.open .faq-icon { transform: rotate(45deg); }

/* ── Testimonial Slider ── */
@keyframes slideIn {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: none; }
}
.testimonial-card.active { animation: slideIn 0.5s var(--ease); }

/* ── Process Step Connector ── */
.process-line {
  transform-origin: top center;
  transform: scaleY(0);
  transition: transform 0.6s var(--ease);
}
.process-line.revealed { transform: scaleY(1); }

/* ── Gradient Flow Background ── */
@keyframes gradientFlow {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.gradient-flow {
  background-size: 200% 200%;
  animation: gradientFlow 12s ease infinite;
}

/* ── Pulse Ring ── */
@keyframes pulseRing {
  0%   { transform: scale(0.9); opacity: 0.8; }
  100% { transform: scale(1.6); opacity: 0; }
}
.pulse-ring {
  animation: pulseRing 2.5s ease-out infinite;
}

/* ── Glow Effect ── */
.glow {
  transition: box-shadow 0.3s var(--ease);
}
.glow:hover {
  box-shadow: 0 0 24px var(--clr-orange-a35), 0 0 64px var(--clr-orange-a20);
}

/* ── Mouse Follower Gradient ── */
#mouse-gradient {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244, 123, 32, 0.06) 0%, transparent 70%);
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 0;
  transition: opacity 0.5s;
}

/* ── Page Background Canvas ── */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ── Reduce Motion Override ── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal-ready {
    opacity: 1;
    transform: none;
  }
}