/* ============================================================
   KANPUR DENTAL CARE — Animations & Keyframes
   animations.css
   ============================================================ */

/* ============================================================
   1. KEYFRAME DEFINITIONS
   ============================================================ */

/* Pulsing dot for section-tag */
@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%       { transform: scale(1.6); opacity: 0.5; }
}

/* Anniversary badge glow pulse */
@keyframes anniversary-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(245,200,66,0.4), 0 0 0 7px rgba(245,200,66,0.12), 0 0 40px rgba(245,200,66,0.30); }
  50%       { box-shadow: 0 0 0 5px rgba(245,200,66,0.5), 0 0 0 12px rgba(245,200,66,0.18), 0 0 60px rgba(245,200,66,0.45); }
}

/* Scroll indicator bounce */
@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* Mouse wheel scroll */
@keyframes scroll-wheel-anim {
  0%   { transform: translateY(0); opacity: 1; }
  80%  { transform: translateY(10px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* Trust bar ticker horizontal scroll */
@keyframes ticker-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Awards / images marquee horizontal scroll */
@keyframes marquee-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* WhatsApp float button gentle bob */
@keyframes float-bounce {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-6px); }
}

/* Page loader logo breathe */
@keyframes loader-breathe {
  0%, 100% { opacity: 1;   transform: scale(1); }
  50%       { opacity: 0.7; transform: scale(0.97); }
}

/* Page loader progress bar fill */
@keyframes loader-progress {
  0%   { width: 0%; }
  30%  { width: 45%; }
  70%  { width: 80%; }
  100% { width: 100%; }
}

/* Fade-in-up: base scroll reveal */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

/* Zoom fade in */
@keyframes zoomIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

/* Hero headline word reveal */
@keyframes heroReveal {
  from { opacity: 0; transform: translateY(20px) skewY(2deg); }
  to   { opacity: 1; transform: translateY(0) skewY(0deg); }
}

/* Particle float — used by canvas JS */
@keyframes particleFloat {
  0%   { transform: translateY(0px) translateX(0px); opacity: 0.4; }
  33%  { transform: translateY(-18px) translateX(8px); opacity: 0.7; }
  66%  { transform: translateY(-10px) translateX(-6px); opacity: 0.5; }
  100% { transform: translateY(0px) translateX(0px); opacity: 0.4; }
}

/* Shimmer / skeleton loading effect */
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Shine sweep across card on hover */
@keyframes shine-sweep {
  0%   { left: -100%; }
  100% { left: 150%; }
}

/* Typing bubble bounce */
@keyframes typing-dot {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40%           { transform: translateY(-6px); opacity: 1; }
}

/* Chatbot widget entrance */
@keyframes chatbot-enter {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Countdown flip effect simulation */
@keyframes count-flip {
  0%   { transform: rotateX(0deg); }
  50%  { transform: rotateX(90deg); opacity: 0; }
  51%  { transform: rotateX(-90deg); opacity: 0; }
  100% { transform: rotateX(0deg); opacity: 1; }
}

/* Ring pulse for live/online status */
@keyframes ring-pulse {
  0%   { transform: scale(1); opacity: 1; }
  80%  { transform: scale(2.2); opacity: 0; }
  100% { transform: scale(1); opacity: 0; }
}

/* ============================================================
   2. SCROLL REVEAL CLASSES
   Controlled via IntersectionObserver in main.js
   ============================================================ */

/* Default hidden state */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Directional variants */
.reveal-left  { opacity: 0; transform: translateX(-28px); transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.reveal-right { opacity: 0; transform: translateX(28px);  transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.reveal-zoom  { opacity: 0; transform: scale(0.93);        transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }

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

/* Stagger delay helpers */
.delay-1  { transition-delay: 0.08s; }
.delay-2  { transition-delay: 0.16s; }
.delay-3  { transition-delay: 0.24s; }
.delay-4  { transition-delay: 0.32s; }
.delay-5  { transition-delay: 0.40s; }
.delay-6  { transition-delay: 0.48s; }
.delay-7  { transition-delay: 0.56s; }
.delay-8  { transition-delay: 0.64s; }
.delay-9  { transition-delay: 0.72s; }
.delay-10 { transition-delay: 0.80s; }

/* ============================================================
   3. HERO ANIMATIONS (applied immediately on load)
   ============================================================ */

/* Hero content animates in on page load */
.hero-tag    { animation: fadeInUp 0.8s cubic-bezier(0.16,1,0.3,1) 0.3s both; }
.hero-title  { animation: fadeInUp 0.9s cubic-bezier(0.16,1,0.3,1) 0.45s both; }
.hero-sub    { animation: fadeInUp 0.8s cubic-bezier(0.16,1,0.3,1) 0.6s both; }
.hero-actions{ animation: fadeInUp 0.8s cubic-bezier(0.16,1,0.3,1) 0.75s both; }
.hero-stats  { animation: fadeInUp 0.8s cubic-bezier(0.16,1,0.3,1) 0.9s both; }

/* Anniversary badge entrance */
.anniversary-badge { animation: anniversary-pulse 3.5s ease-in-out infinite, zoomIn 0.8s cubic-bezier(0.16,1,0.3,1) 1.1s both; }

/* ============================================================
   4. CARD SHINE EFFECT
   ============================================================ */
.card-shine {
  position: relative;
  overflow: hidden;
}

.card-shine::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(10,191,184,0.08) 50%,
    transparent 100%
  );
  transform: skewX(-15deg);
  transition: left 0.6s ease;
}

.card-shine:hover::after {
  left: 150%;
}

/* ============================================================
   5. SHIMMER SKELETON (for lazy-load placeholders)
   ============================================================ */
.shimmer {
  background: linear-gradient(
    90deg,
    var(--bg-card) 0%,
    var(--bg-surface) 50%,
    var(--bg-card) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.6s ease-in-out infinite;
}

/* ============================================================
   6. GLOW HOVER RINGS (service cards, stat cards)
   ============================================================ */
.glow-hover {
  transition: box-shadow 0.35s ease;
}
.glow-hover:hover {
  box-shadow: 0 0 0 1px var(--border), 0 0 30px var(--primary-glow);
}

/* ============================================================
   7. GRADIENT BORDER ANIMATION
   ============================================================ */
.animated-border {
  position: relative;
}
.animated-border::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--primary), transparent, var(--primary));
  background-size: 200% 200%;
  animation: border-rotate 4s linear infinite;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.animated-border:hover::before { opacity: 1; }

@keyframes border-rotate {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ============================================================
   8. PAGE TRANSITION
   ============================================================ */
.page-transition-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-dark);
  z-index: 8000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.page-transition-overlay.active {
  opacity: 1;
  pointer-events: all;
}