/* =============================================
   animations.css — Scroll reveal, transitions,
   micro-interactions, modern UI effects
   ============================================= */

/* ---- Scroll Reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s cubic-bezier(.22,.68,0,1.2), transform 0.6s cubic-bezier(.22,.68,0,1.2);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.10s; }
.reveal-delay-2 { transition-delay: 0.20s; }
.reveal-delay-3 { transition-delay: 0.30s; }
.reveal-delay-4 { transition-delay: 0.40s; }

/* ---- Fade-in on load ---- */
@keyframes fadeInUp {
  from { opacity:0; transform:translateY(30px); }
  to   { opacity:1; transform:translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity:0; transform:translateX(-24px); }
  to   { opacity:1; transform:translateX(0); }
}
@keyframes fadeInScale {
  from { opacity:0; transform:scale(.92); }
  to   { opacity:1; transform:scale(1); }
}
@keyframes slideDown {
  from { opacity:0; transform:translateY(-16px); }
  to   { opacity:1; transform:translateY(0); }
}
@keyframes countUp {
  from { transform:translateY(100%); opacity:0; }
  to   { transform:translateY(0);    opacity:1; }
}
@keyframes shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}
@keyframes pulse-ring {
  0%   { transform:scale(.95); box-shadow:0 0 0 0 rgba(26,107,154,.5); }
  70%  { transform:scale(1);   box-shadow:0 0 0 12px rgba(26,107,154,0); }
  100% { transform:scale(.95); box-shadow:0 0 0 0 rgba(26,107,154,0); }
}
@keyframes float {
  0%,100% { transform:translateY(0); }
  50%      { transform:translateY(-8px); }
}
@keyframes rotateSlow {
  from { transform:rotate(0deg); }
  to   { transform:rotate(360deg); }
}

/* ---- Hero entrance ---- */
.hero-animate-title {
  animation: fadeInUp .9s cubic-bezier(.22,.68,0,1.2) .3s both;
}
.hero-animate-sub {
  animation: fadeInUp .8s cubic-bezier(.22,.68,0,1.2) .55s both;
}
.hero-animate-btn {
  animation: fadeInUp .7s cubic-bezier(.22,.68,0,1.2) .75s both;
}

/* ---- Page Hero entrance (sub-pages) ---- */
.page-hero-animate h1 {
  animation: fadeInUp .75s cubic-bezier(.22,.68,0,1.2) .15s both;
}
.page-hero-animate .breadcrumb {
  animation: fadeInUp .65s cubic-bezier(.22,.68,0,1.2) .35s both;
}


/* ---- Scroll-to-Top Button ---- */
#scrollTopBtn {
  position: fixed;
  bottom: 32px;
  right: 28px;
  z-index: 999;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 18px rgba(26,107,154,.45);
  opacity: 0;
  transform: translateY(16px) scale(.8);
  transition: opacity .35s ease, transform .35s cubic-bezier(.22,.68,0,1.2), background .2s;
  pointer-events: none;
}
#scrollTopBtn.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
#scrollTopBtn:hover {
  background: var(--primary-dark);
  transform: translateY(-3px) scale(1.08);
  box-shadow: 0 8px 24px rgba(26,107,154,.5);
}
#scrollTopBtn:active { transform: scale(.95); }
#scrollTopBtn svg { width:22px; height:22px; fill:#fff; }

/* Tooltip */
#scrollTopBtn::before {
  content: 'กลับด้านบน';
  position: absolute;
  right: 58px;
  background: #1e2d3d;
  color: #fff;
  font-size: 12px;
  font-family: 'IBM Plex Sans Thai', sans-serif;
  padding: 5px 10px;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}
#scrollTopBtn:hover::before { opacity: 1; }

/* ---- Progress bar ---- */
#readProgress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  z-index: 9999;
  width: 0%;
  transition: width .1s linear;
}

/* ---- Card hover effects ---- */
.card-hover-lift {
  transition: transform .25s cubic-bezier(.22,.68,0,1.2),
              box-shadow .25s ease;
  cursor: pointer;
}
.card-hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(26,107,154,.15);
}

/* ---- Icon circle pulse (about cards) ---- */
.icon-circle-pulse {
  transition: background .2s, transform .2s;
}
.card-hover-lift:hover .icon-circle-pulse {
  background: var(--primary);
  transform: scale(1.1);
  animation: pulse-ring 1.2s ease infinite;
}
.card-hover-lift:hover .icon-circle-pulse svg {
  fill: #fff;
}

/* ---- Stat counters ---- */
.stat-num {
  display: inline-block;
  overflow: hidden;
  height: 1.2em;
  vertical-align: bottom;
}
.stat-num span {
  display: block;
  animation: countUp .7s cubic-bezier(.22,.68,0,1.2) both;
}

/* ---- Skeleton loader ---- */
.skeleton {
  background: linear-gradient(90deg, #f0f2f5 25%, #e8eaed 50%, #f0f2f5 75%);
  background-size: 600px 100%;
  animation: shimmer 1.4s infinite linear;
  border-radius: 6px;
  display: block;
}

/* ---- News item hover ---- */
.news-item {
  transition: background .18s, padding-left .18s;
  border-radius: var(--radius-sm);
  padding-left: 4px;
}
.news-item:hover {
  background: var(--primary-light);
  padding-left: 12px;
}

/* ---- Ripple effect on buttons ---- */
.btn { position: relative; overflow: hidden; }
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,.35);
  transform: scale(0);
  animation: rippleAnim .55s linear;
  pointer-events: none;
}
@keyframes rippleAnim {
  to { transform: scale(4); opacity: 0; }
}

/* ---- Section entrance ---- */
.section-enter { animation: fadeInScale .6s ease both; }

/* ---- Media card hover ---- */
.media-card {
  transition: transform .25s cubic-bezier(.22,.68,0,1.2),
              box-shadow .25s ease,
              border-color .2s;
}
.media-card:hover {
  transform: translateY(-5px) scale(1.03);
  box-shadow: 0 12px 32px rgba(26,107,154,.18);
  border-color: var(--primary);
}

/* ---- Hero parallax layer ---- */
.hero-parallax {
  will-change: transform;
  transition: transform .1s linear;
}

/* ---- Gradient text ---- */
.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Typewriter cursor ---- */
.typewriter-cursor::after {
  content: '|';
  animation: blink 1s step-end infinite;
  color: var(--secondary);
  margin-left: 2px;
}
@keyframes blink {
  0%,100% { opacity:1; }
  50%      { opacity:0; }
}

/* ---- Badge pulse ---- */
.badge-pulse {
  animation: badgePulse 2s ease infinite;
}
@keyframes badgePulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(230,57,70,.4); }
  50%     { box-shadow: 0 0 0 6px rgba(230,57,70,0); }
}

/* ---- Smooth section divider ---- */
.wave-divider {
  display: block;
  width: 100%;
  overflow: hidden;
  line-height: 0;
}
.wave-divider svg { display:block; }

/* ---- Counter digit flip ---- */
.digit {
  transition: background .3s;
}

/* ---- Reduce motion support ---- */
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-delay-1, .reveal-delay-2,
  .reveal-delay-3, .reveal-delay-4 {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-animate-title,
  .hero-animate-sub,
  .hero-animate-btn { animation: none; }
  #scrollTopBtn { transition: opacity .15s; }
  .card-hover-lift:hover { transform: none; }
}