/*
 * Shifa Health Care — Animation System
 * GSAP-compatible reveal classes + CSS animations
 */

/* ============================================================
   BASE REVEAL STATES (initial hidden states)
   GSAP will animate these in
   ============================================================ */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
}
.reveal-down {
  opacity: 0;
  transform: translateY(-40px);
}
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
}
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
}
.reveal-fade {
  opacity: 0;
}
.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
}
.reveal-scale-up {
  opacity: 0;
  transform: scale(0.85) translateY(20px);
}
.text-reveal-line {
  overflow: hidden;
  display: block;
}
.text-reveal-line .inner {
  transform: translateY(100%);
  display: block;
}
.image-reveal {
  overflow: hidden;
}
.image-reveal img {
  transform: scale(1.1);
  transition: transform 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}
.image-reveal.revealed img {
  transform: scale(1);
}
.clip-reveal {
  clip-path: inset(0 100% 0 0);
}
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
}

/* ============================================================
   CSS ANIMATIONS (no JS required)
   ============================================================ */

/* Floating animation */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}
.anim-float { animation: float 5s ease-in-out infinite; }
.anim-float-slow { animation: float 8s ease-in-out infinite; }
.anim-float-fast { animation: float 3s ease-in-out infinite; }

/* Pulse glow */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(11,111,173,0.4); }
  50%       { box-shadow: 0 0 0 20px rgba(11,111,173,0); }
}
.anim-pulse-glow { animation: pulse-glow 2.5s ease-in-out infinite; }

/* Spin slow */
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.anim-spin-slow { animation: spin-slow 20s linear infinite; }

/* Gradient shift */
@keyframes gradient-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.anim-gradient {
  background-size: 200% 200%;
  animation: gradient-shift 6s ease infinite;
}

/* Shimmer */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
.anim-shimmer {
  background: linear-gradient(90deg, transparent 20%, rgba(255,255,255,0.15) 50%, transparent 80%);
  background-size: 200% 100%;
  animation: shimmer 2s linear infinite;
}

/* Heartbeat */
@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  15%       { transform: scale(1.08); }
  30%       { transform: scale(1); }
  45%       { transform: scale(1.05); }
  60%       { transform: scale(1); }
}
.anim-heartbeat { animation: heartbeat 2.5s ease-in-out infinite; }

/* Fade in */
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.anim-fade-in { animation: fade-in 0.6s ease forwards; }

/* Slide up */
@keyframes slide-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.anim-slide-up { animation: slide-up 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards; }

/* Bounce in */
@keyframes bounce-in {
  0%   { opacity: 0; transform: scale(0.6); }
  60%  { opacity: 1; transform: scale(1.05); }
  100% { transform: scale(1); }
}
.anim-bounce-in { animation: bounce-in 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }

/* Particle drift */
@keyframes particle-drift {
  0%   { transform: translate(0, 0) rotate(0deg); opacity: 0.6; }
  33%  { transform: translate(15px, -20px) rotate(120deg); opacity: 0.8; }
  66%  { transform: translate(-10px, -35px) rotate(240deg); opacity: 0.5; }
  100% { transform: translate(5px, -60px) rotate(360deg); opacity: 0; }
}

/* Typewriter cursor */
@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
.cursor-blink::after {
  content: '|';
  animation: cursor-blink 1s step-end infinite;
}

/* ============================================================
   HOVER EFFECTS
   ============================================================ */

/* 3D Tilt Card */
.tilt-card {
  transform-style: preserve-3d;
  perspective: 1000px;
  transition: transform 0.1s ease;
}
.tilt-card .tilt-inner {
  transform: translateZ(20px);
}

/* Magnetic hover — actual movement handled by JS */
.magnetic-wrap { position: relative; display: inline-block; }
.magnetic-target {
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

/* Image hover overlay */
.hover-overlay {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.hover-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
}
.hover-overlay:hover::after { opacity: 0.15; }
.hover-overlay img {
  transition: transform var(--duration-slow) var(--ease-out);
}
.hover-overlay:hover img { transform: scale(1.06); }

/* Scale hover */
.hover-scale {
  transition: transform var(--duration-base) var(--ease-out);
}
.hover-scale:hover { transform: scale(1.03); }

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

/* ============================================================
   ANIMATED BACKGROUND ELEMENTS
   ============================================================ */
.bg-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.bg-particles .particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(11,111,173,0.15);
  animation: float var(--duration, 6s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

/* Animated grid lines */
.bg-grid {
  background-image:
    linear-gradient(rgba(11,111,173,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,111,173,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}
.bg-grid-dark {
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* Animated lines (ICU page) */
@keyframes line-flow {
  0%   { transform: scaleX(0) translateX(0); }
  50%  { transform: scaleX(1) translateX(0); }
  100% { transform: scaleX(0) translateX(100%); }
}
.anim-line {
  height: 1px;
  background: var(--gradient-primary);
  animation: line-flow 3s ease-in-out infinite;
  transform-origin: left;
}

/* ============================================================
   ACTIVE STATES (when JS adds .revealed / .visible)
   ============================================================ */
.reveal-up.revealed,
.reveal-down.revealed,
.reveal-left.revealed,
.reveal-right.revealed,
.reveal-fade.revealed,
.reveal-scale.revealed,
.reveal-scale-up.revealed {
  opacity: 1;
  transform: none;
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

/* Stagger delays */
.delay-100 { transition-delay: 0.1s !important; animation-delay: 0.1s !important; }
.delay-200 { transition-delay: 0.2s !important; animation-delay: 0.2s !important; }
.delay-300 { transition-delay: 0.3s !important; animation-delay: 0.3s !important; }
.delay-400 { transition-delay: 0.4s !important; animation-delay: 0.4s !important; }
.delay-500 { transition-delay: 0.5s !important; animation-delay: 0.5s !important; }
.delay-600 { transition-delay: 0.6s !important; animation-delay: 0.6s !important; }

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

/* ============================================================
   LOADING SKELETON
   ============================================================ */
@keyframes skeleton {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, #f0f4f8 25%, #e2e8f0 50%, #f0f4f8 75%);
  background-size: 200% 100%;
  animation: skeleton 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

/* ============================================================
   THREE.JS CANVAS CONTAINERS
   ============================================================ */
.three-canvas-container {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.three-canvas-container canvas {
  width: 100% !important;
  height: 100% !important;
}

@media (max-width: 768px) {
  .three-canvas-container { opacity: 0.5; }
}