/* ═══════════════════════════════════════════════
   TÚ AN CLINIC — ANIMATIONS
   File: assets/css/animations.css
   Tham khảo style: illglobal.com
   — Cinematic scroll, counter, parallax, stagger
═══════════════════════════════════════════════ */

/* ══════════════════════════════
   1. SCROLL REVEAL — base states
══════════════════════════════ */

/* Elements bắt đầu hidden, JS thêm .is-visible */
[data-reveal] {
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

[data-reveal="up"] {
  transform: translateY(48px);
}
[data-reveal="down"] {
  transform: translateY(-48px);
}
[data-reveal="left"] {
  transform: translateX(-60px);
}
[data-reveal="right"] {
  transform: translateX(60px);
}
[data-reveal="scale"] {
  transform: scale(0.88);
}
[data-reveal="fade"] {
  transform: none;
}

/* Visible state */
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Stagger delays — thêm data-delay="1..6" */
[data-delay="1"] { transition-delay: 0.08s; }
[data-delay="2"] { transition-delay: 0.16s; }
[data-delay="3"] { transition-delay: 0.24s; }
[data-delay="4"] { transition-delay: 0.32s; }
[data-delay="5"] { transition-delay: 0.40s; }
[data-delay="6"] { transition-delay: 0.48s; }
[data-delay="7"] { transition-delay: 0.56s; }
[data-delay="8"] { transition-delay: 0.64s; }

/* ══════════════════════════════
   2. KEYFRAMES
══════════════════════════════ */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-80px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(80px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Hero text — cinematic reveal like illglobal */
@keyframes heroReveal {
  0%   { opacity: 0; transform: translateY(32px) skewY(1.5deg); }
  100% { opacity: 1; transform: translateY(0) skewY(0deg); }
}

/* Clip reveal — text slides in from bottom */
@keyframes clipUp {
  from { clip-path: inset(100% 0 0 0); transform: translateY(20px); }
  to   { clip-path: inset(0% 0 0 0);   transform: translateY(0); }
}

/* Line draw — for decorative lines */
@keyframes drawLine {
  from { transform: scaleX(0); transform-origin: left; }
  to   { transform: scaleX(1); transform-origin: left; }
}

/* Pulse glow */
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(91, 170, 175, 0.3); }
  50%       { box-shadow: 0 0 0 16px rgba(91, 170, 175, 0); }
}

/* Float — subtle floating for decorative elements */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

/* Shimmer — loading skeleton & highlights */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

/* Rotate slow — for badge/circle elements */
@keyframes rotateSlow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* Counter tick */
@keyframes countTick {
  0%   { transform: translateY(0); }
  50%  { transform: translateY(-4px); }
  100% { transform: translateY(0); }
}

/* ══════════════════════════════
   3. HERO ENTRANCE
══════════════════════════════ */

.hero-animate-1 {
  animation: heroReveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
}
.hero-animate-2 {
  animation: heroReveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.25s both;
}
.hero-animate-3 {
  animation: heroReveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}
.hero-animate-4 {
  animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.55s both;
}
.hero-animate-5 {
  animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.7s both;
}

/* ══════════════════════════════
   4. HOVER MICRO-INTERACTIONS
══════════════════════════════ */

/* Card lift */
.hover-lift {
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.35s ease;
}
.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

/* Link arrow slide */
.hover-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap 0.3s ease;
}
.hover-arrow::after {
  content: '→';
  transition: transform 0.3s ease;
}
.hover-arrow:hover {
  gap: 14px;
}
.hover-arrow:hover::after {
  transform: translateX(4px);
}

/* Image zoom on hover */
.hover-zoom {
  overflow: hidden;
}
.hover-zoom img {
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.hover-zoom:hover img {
  transform: scale(1.06);
}

/* Button press */
.hover-press {
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.hover-press:active {
  transform: scale(0.97);
}

/* ══════════════════════════════
   5. SECTION TRANSITIONS
   (illglobal-style — full viewport sections)
══════════════════════════════ */

.section-cinematic {
  position: relative;
  overflow: hidden;
}

/* Overlay that sweeps out on scroll-in */
.section-cinematic::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--bg-base);
  transform-origin: right;
  transition: transform 1s cubic-bezier(0.77, 0, 0.175, 1);
  z-index: 2;
  pointer-events: none;
}

.section-cinematic.is-visible::before {
  transform: scaleX(0);
}

/* ══════════════════════════════
   6. COUNTER ANIMATION
══════════════════════════════ */

.counter-wrap {
  display: inline-block;
  overflow: hidden;
}

.counter {
  display: inline-block;
  font-family: var(--font-serif);
  font-weight: 300;
  transition: transform 0.1s ease;
}

.counter.ticking {
  animation: countTick 0.1s ease;
}

/* ══════════════════════════════
   7. PARALLAX
══════════════════════════════ */

.parallax-el {
  will-change: transform;
  /* JS controls transform: translateY() */
}

/* ══════════════════════════════
   8. LINE DECORATIVES
══════════════════════════════ */

.line-animate {
  display: block;
  height: 1px;
  background: var(--border-mid);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.line-animate.is-visible {
  transform: scaleX(1);
}

/* ══════════════════════════════
   9. PAGE LOADER
══════════════════════════════ */

#page-loader {
  position: fixed;
  inset: 0;
  background: var(--bg-base);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

#page-loader.hide {
  opacity: 0;
  visibility: hidden;
}

.loader-logo {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 300;
  letter-spacing: 6px;
  color: var(--ink-900);
  animation: fadeIn 0.5s ease both;
}

.loader-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--teal-400);
  animation: drawLine 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
  width: 100%;
}



/* ══════════════════════════════
   11. MARQUEE (scrolling text)
══════════════════════════════ */

.marquee-wrap {
  overflow: hidden;
  white-space: nowrap;
}

.marquee-track {
  display: inline-flex;
  gap: 80px;
  animation: marquee 24s linear infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ══════════════════════════════
   12. REDUCED MOTION SUPPORT
══════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  .hero-animate-1,
  .hero-animate-2,
  .hero-animate-3,
  .hero-animate-4,
  .hero-animate-5,
  .section-cinematic::before,
  .line-animate,
  .marquee-track {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
    clip-path: none !important;
  }
}