/* ========== Animations ========== */

/* Slide transitions */
@keyframes slideUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideDown {
  from {
    transform: translateY(0);
    opacity: 1;
  }

  to {
    transform: translateY(100%);
    opacity: 0;
  }
}

@keyframes slideLeftOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }

  to {
    transform: translateX(-100%);
    opacity: 0;
  }
}

/* Interpret button exit — slide up out of screen */
@keyframes slideUpOut {
  from {
    transform: translateY(0);
    opacity: 1;
  }

  to {
    transform: translateY(-100dvh);
    opacity: 0;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
  }
}

/* Breathing */
@keyframes breathe {

  0%,
  100% {
    transform: scale(1);
    opacity: 0.7;
  }

  50% {
    transform: scale(1.4);
    opacity: 1;
  }
}

/* Cursor blink */
@keyframes cursorBlink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

/* Tea steam */
@keyframes teaSteam {

  0%,
  100% {
    opacity: 0.15;
    transform: translateX(-50%) scale(1);
  }

  50% {
    opacity: 0.35;
    transform: translateX(-50%) scale(1.3);
  }
}

/* Triangle bounce (dialogue continue indicator) */
@keyframes triangleBounce {

  0%,
  100% {
    transform: translateY(0);
    opacity: 0.5;
  }

  50% {
    transform: translateY(4px);
    opacity: 1;
  }
}

/* Jiao orbit (loading) — centripetal: cup's own orientation rotates with orbit */
@keyframes orbitCW {
  from {
    transform: rotate(0deg) translateX(100px);
  }

  to {
    transform: rotate(360deg) translateX(100px);
  }
}

@keyframes orbitCCW {
  from {
    transform: rotate(180deg) translateX(100px);
  }

  to {
    transform: rotate(-180deg) translateX(100px);
  }
}

/* Jiao falling — natural physics-based fall, +150px depth */
@keyframes jiaoFallLeft {
  0% {
    transform: translateY(0) translateX(0) rotate(0deg);
    opacity: 1;
  }

  50% {
    transform: translateY(175px) translateX(-20px) rotate(90deg);
    opacity: 1;
  }

  100% {
    transform: translateY(350px) translateX(-10px) rotate(var(--fall-rot, 180deg));
    opacity: 1;
  }
}

@keyframes jiaoFallRight {
  0% {
    transform: scaleX(-1) translateY(0) translateX(0) rotate(0deg);
    opacity: 1;
  }

  50% {
    transform: scaleX(-1) translateY(175px) translateX(20px) rotate(-90deg);
    opacity: 1;
  }

  100% {
    transform: scaleX(-1) translateY(350px) translateX(10px) rotate(calc(-1 * var(--fall-rot, 180deg)));
    opacity: 1;
  }
}

/* Impact wave (result image) */
@keyframes impactIn {
  0% {
    transform: scale(0.3);
    opacity: 0;
    filter: blur(8px);
  }

  60% {
    transform: scale(1.15);
    opacity: 1;
    filter: blur(0);
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes impactOut {
  from {
    transform: scale(1);
    opacity: 1;
  }

  to {
    transform: scale(1.1);
    opacity: 0;
  }
}

/* Explosion dialogue pop */
@keyframes popIn {
  0% {
    transform: scale(0) rotate(-10deg);
    opacity: 0;
  }

  60% {
    transform: scale(1.1) rotate(3deg);
    opacity: 1;
  }

  100% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }
}

@keyframes popOut {
  0% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }

  100% {
    transform: scale(0.3) rotate(10deg);
    opacity: 0;
  }
}

/* Explosion dialogue — 左下到右上弹出，右上到左下收回 */
@keyframes explosionIn {
  from {
    transform: translate(-40px, 40px) scale(0.5);
    opacity: 0;
  }

  to {
    transform: translate(0, 0) scale(1);
    opacity: 1;
  }
}

@keyframes explosionOut {
  from {
    transform: translate(0, 0) scale(1);
    opacity: 1;
  }

  to {
    transform: translate(-40px, 40px) scale(0.5);
    opacity: 0;
  }
}

/* Button fill (hover) */
@keyframes btnFill {
  from {
    transform: scaleX(0);
  }

  to {
    transform: scaleX(1);
  }
}

/* Restart blink */
@keyframes blink {

  0%,
  100% {
    opacity: 0.3;
  }

  50% {
    opacity: 1;
  }
}

/* Logo fade */
@keyframes logoFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Page slide left */
@keyframes pageSlideLeft {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-100%);
  }
}

/* Glow pulse (tea pet) — 金黄色发光加强 */
@keyframes glowPulse {

  0%,
  100% {
    filter: drop-shadow(0 0 18px rgba(255, 200, 50, 0.9)), drop-shadow(0 0 36px rgba(255, 200, 50, 0.6));
  }

  50% {
    filter: drop-shadow(0 0 36px rgba(255, 200, 50, 1)), drop-shadow(0 0 72px rgba(255, 200, 50, 0.8));
  }
}

/* Halo pulse —— radial-gradient 光环的呼吸动画（保证可见的发光方案） */
@keyframes haloPulseGreen {

  0%,
  100% {
    transform: translate(-50%, -50%) scale(0.92);
    opacity: 0.75;
  }

  50% {
    transform: translate(-50%, -50%) scale(1.18);
    opacity: 1;
  }
}

@keyframes haloPulseWhite {

  0%,
  100% {
    transform: translate(-50%, -50%) scale(0.92);
    opacity: 0.8;
  }

  50% {
    transform: translate(-50%, -50%) scale(1.22);
    opacity: 1;
  }
}

/* Pouring water stream */
@keyframes pourStream {
  0% {
    height: 0;
    opacity: 0;
  }

  20% {
    opacity: 1;
  }

  100% {
    height: var(--pour-height, 40px);
    opacity: 1;
  }
}

/* Stream sway — 水流顶端固定左右轻微摆动 */
@keyframes streamSway {

  0%,
  100% {
    transform: translateX(-50%) rotate(-1.5deg);
  }

  50% {
    transform: translateX(-50%) rotate(1.5deg);
  }
}

/* Stream fade — 两层渐变平滑交替（400ms间隔） */
@keyframes streamFadeA {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.15;
  }
}

@keyframes streamFadeB {

  0%,
  100% {
    opacity: 0.15;
  }

  50% {
    opacity: 1;
  }
}

/* Interpret button blink —— 解读按钮解锁后持续闪烁吸引注意 */
@keyframes interpretBlink {

  0%,
  100% {
    box-shadow: 0 0 0 rgba(217, 74, 56, 0);
  }

  50% {
    box-shadow: 0 0 24px rgba(217, 74, 56, 0.9), 0 0 48px rgba(217, 74, 56, 0.5);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}