/* ================================================================
   PUR-SAKOON — ANIMATIONS ENGINE v5.0
   Structural animation layer. Loaded BEFORE dark-theme.css.
   Contains: @keyframes, transitions, scroll-reveal states, cursor, spring tokens.
   ================================================================ */

/* Easing Tokens */
:root {
  --spring:      cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:     cubic-bezier(0.4, 0, 1, 1);
  --ease-snappy: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ================================================================
   PAGE TRANSITIONS
   ================================================================ */
@keyframes ps-page-enter {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

body {
  animation: ps-page-enter 0.55s var(--ease-out) both;
}

/* ================================================================
   SCROLL REVEAL STATES
   ================================================================ */
.scroll-reveal,
.reveal-card {
  opacity: 0;
  transform: translateY(28px) scale(0.98);
  transition:
    opacity 0.6s var(--ease-out),
    transform 0.6s var(--ease-out);
}
.scroll-reveal.is-visible,
.reveal-card.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Stagger helpers */
.stagger-children > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children > *:nth-child(2) { transition-delay: 0.12s; }
.stagger-children > *:nth-child(3) { transition-delay: 0.19s; }
.stagger-children > *:nth-child(4) { transition-delay: 0.26s; }
.stagger-children > *:nth-child(5) { transition-delay: 0.33s; }
.stagger-children > *:nth-child(6) { transition-delay: 0.40s; }

/* data-animate hidden state */
[data-animate] {
  opacity: 0;
  visibility: hidden;
  will-change: transform, opacity;
}

/* ================================================================
   FLOAT KEYFRAMES (hero feature boxes)
   ================================================================ */
@keyframes floatUp {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-14px); }
}
@keyframes floatDown {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(14px); }
}

.float-up   { animation: floatUp   5.2s ease-in-out infinite; }
.float-down { animation: floatDown 5.2s ease-in-out infinite; }

/* ================================================================
   PARTICLE DRIFT
   ================================================================ */
@keyframes particleDrift {
  0%   { transform: translateY(0) translateX(0); opacity: 0.15; }
  30%  { transform: translateY(-28px) translateX(8px); opacity: 0.28; }
  70%  { transform: translateY(-58px) translateX(-6px); opacity: 0.18; }
  100% { transform: translateY(-90px) translateX(18px); opacity: 0; }
}

.ps-particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform, opacity;
  animation: particleDrift linear infinite;
}

/* ================================================================
   ORBIT ANIMATIONS
   ================================================================ */
@keyframes orbitSpin   { to { transform: rotate(360deg); } }
@keyframes counterSpin { to { transform: rotate(-360deg); } }
@keyframes dashScroll  { to { stroke-dashoffset: -40; } }

.orbit-track { animation: orbitSpin   14s linear infinite; }
.orbit-node  { animation: counterSpin 14s linear infinite; }
.arrow-path  { animation: dashScroll  2s  linear infinite; }

/* ================================================================
   RIPPLE EFFECT
   ================================================================ */
.ripple-circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(20, 184, 166, 0.22);
  transform: scale(0);
  animation: rippleExpand 0.6s var(--ease-out) forwards;
  pointer-events: none;
}
@keyframes rippleExpand {
  to { transform: scale(4); opacity: 0; }
}

/* ================================================================
   SCROLL PROGRESS BAR + BACK-TO-TOP
   ================================================================ */
#ps-scroll-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  z-index: 99999;
  transition: width 0.1s linear;
  pointer-events: none;
}

#ps-back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #fff;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.35s ease, transform 0.35s var(--spring), visibility 0.35s;
  z-index: 9999;
}
#ps-back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
#ps-back-top:hover { transform: translateY(-4px) scale(1.08); }

/* ================================================================
   CUSTOM CURSOR
   ================================================================ */
@media (hover: hover) and (pointer: fine) {
  body { cursor: none; }

  #cursor-ring {
    position: fixed;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1.5px solid rgba(20, 184, 166, 0.6);
    pointer-events: none;
    z-index: 2147483646;
    transition: width 0.25s var(--spring), height 0.25s var(--spring),
                background 0.25s ease, border-color 0.25s ease;
    top: 0; left: 0;
    will-change: transform;
  }

  #cursor-dot {
    position: fixed;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #14b8a6;
    pointer-events: none;
    z-index: 2147483647;
    top: 0; left: 0;
    will-change: transform;
    transition: transform 0.05s linear;
  }

  body.cursor-hover #cursor-ring {
    width: 52px;
    height: 52px;
    border-color: rgba(13, 92, 81, 0.75);
    background: rgba(20, 184, 166, 0.08);
  }

  body.cursor-click #cursor-ring {
    width: 28px;
    height: 28px;
    background: rgba(20, 184, 166, 0.18);
  }
}

/* ================================================================
   BUTTON ANIMATION UTILITIES
   ================================================================ */
@keyframes pulsePrimary {
  0%, 100% { box-shadow: 0 0 0 0 rgba(13, 92, 81, 0.55); }
  60%       { box-shadow: 0 0 0 14px rgba(13, 92, 81, 0); }
}
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(20, 184, 166, 0.4); }
  60%       { box-shadow: 0 0 0 14px rgba(20, 184, 166, 0); }
}

.btn-animate-pulse-primary { animation: pulsePrimary 2.4s ease-in-out infinite; }
.btn-animate-glow          { animation: glowPulse    2.4s ease-in-out infinite; }
.btn-hover-bounce:hover    { transform: translateY(-3px) scale(1.03) !important; }

/* ================================================================
   NAVBAR SCROLL TRANSITION
   ================================================================ */
.navbar {
  transition: background 0.35s ease, box-shadow 0.35s ease !important;
}

/* ================================================================
   REDUCED MOTION
   ================================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration:   0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration:  0.01ms !important;
  }
  .scroll-reveal, .reveal-card { opacity: 1; transform: none; }
  [data-animate] { opacity: 1; visibility: visible; }
}

/* ================================================================
   RESPONSIVE: disable heavy animations on mobile/tablet
   ================================================================ */
@media (max-width: 991px) {
  .float-up,
  .float-down { animation: none; }
}