:root {
  --pink: #ff2fd6;
  --cyan: #00f0ff;
  --yellow: #ffe600;
  --green: #39ff14;
  --orange: #ff7b00;
  --purple: #b14bff;
  --ink: #ffffff;
  --night: #0b0020;
  --night-2: #2a0a5e;
}

* { box-sizing: border-box; }

html, body { margin: 0; }

/* The unicorn's beam shoots past the screen edge; never let it cause sideways scrolling. */
html, body { overflow-x: hidden; }
@supports (overflow: clip) {
  html, body { overflow-x: clip; }
}

body {
  min-height: 100vh;
  font-family: 'Fredoka', system-ui, sans-serif;
  color: var(--ink);
  background: linear-gradient(120deg, #ff006e, #8338ec, #3a86ff, #06d6a0, #ffbe0b, #fb5607, #ff006e);
  background-size: 400% 400%;
  animation: bgshift 18s ease infinite;
  display: flex;
  flex-direction: column;
  align-items: center;
}

body.party { animation-duration: 3s; }

/* ---------- Background layers ---------- */

.sunburst {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 250vmax;
  height: 250vmax;
  margin: -125vmax 0 0 -125vmax;
  background: repeating-conic-gradient(from 0deg, rgba(255, 255, 255, 0.13) 0deg 9deg, transparent 9deg 18deg);
  animation: spin 80s linear infinite;
  pointer-events: none;
  z-index: 0;
}
body.party .sunburst { animation-duration: 8s; }

#floaties {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.floatie {
  position: absolute;
  bottom: 0;
  font-size: 2.2rem;
  opacity: 0.85;
  animation: floatUp linear infinite;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.25));
}

#fx {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 100;
}

.hero, main, footer { position: relative; z-index: 1; }

/* ---------- Title ---------- */

.hero {
  text-align: center;
  padding: 28px 16px 8px;
}

#title {
  margin: 0;
  font-family: 'Bungee Shade', 'Bungee', Impact, sans-serif;
  font-weight: 400;
  font-size: clamp(2.4rem, 9vw, 6.2rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  user-select: none;
}
#title.spin { animation: titleSpin 1.2s cubic-bezier(.5, -0.4, .5, 1.4); }

.word { display: inline-block; white-space: nowrap; }

.letter {
  display: inline-block;
  cursor: pointer;
  text-shadow: 0 0 18px currentColor, 0 6px 0 rgba(0, 0, 0, 0.35);
  animation:
    wave 2.2s ease-in-out infinite calc(var(--i) * -0.13s),
    hue 6s linear infinite calc(var(--i) * -0.4s);
}
body.party .letter { animation-duration: 0.7s, 1.2s; }
.letter.boing { animation: boing 0.6s ease-out, hue 6s linear infinite; }

.tagline {
  display: inline-block;
  margin: 16px 0 0;
  padding: 8px 20px;
  font-family: 'Bungee', sans-serif;
  font-size: clamp(0.85rem, 2.6vw, 1.15rem);
  background: rgba(11, 0, 32, 0.75);
  border: 3px solid var(--yellow);
  border-radius: 999px;
  box-shadow: 0 0 16px var(--yellow);
  animation: bob 3s ease-in-out infinite;
}

/* ---------- Game marquee ---------- */

main {
  width: 100%;
  max-width: 940px;
  padding: 24px 16px 8px;
}

.marquee {
  position: relative;
  padding: 34px;
  border-radius: 28px;
  background: repeating-linear-gradient(45deg, #e8173f 0 22px, #ffe9ef 22px 44px);
  box-shadow: 0 12px 0 #7a002c, 0 24px 50px rgba(0, 0, 0, 0.4);
}

.bulbs {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.bulb {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  border: 2px solid #7a5200;
  animation: blink 0.9s linear infinite;
}
.bulb:nth-child(even) { animation-delay: -0.45s; }
body.party .bulb { animation-duration: 0.25s; }
body.party .bulb:nth-child(even) { animation-delay: -0.125s; }

/* ---------- Rainbow-blasting unicorn ---------- */

.unicorn {
  position: absolute;
  left: -36px;
  bottom: -26px;
  width: 150px;
  z-index: 5;
  pointer-events: none;
  opacity: 0;
  transform-origin: 50% 100%;
}
.unicorn.go { animation: unicornRide 2.3s cubic-bezier(.3, 1.4, .5, 1) forwards; }

.unicorn-svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
  filter: drop-shadow(0 0 2px #2a0a5e) drop-shadow(0 0 14px #ff2fd6);
}

.horn-tip {
  position: absolute;
  left: 86.7%;
  top: 3.3%;
}

.rainbow-beam {
  position: absolute;
  left: 86.7%;
  top: 3.3%;
  width: 1100px;
  height: 56px;
  margin-top: -28px;
  transform-origin: 0 50%;
  transform: rotate(-32deg) scaleX(0);
  opacity: 0;
  background: linear-gradient(to bottom,
    #ff3b3b 0 16.6%, #ff9a1f 16.6% 33.3%, #ffe600 33.3% 50%,
    #39ff14 50% 66.6%, #00b3ff 66.6% 83.3%, #b14bff 83.3% 100%);
  clip-path: polygon(0 42%, 100% 0, 100% 100%, 0 58%);
  -webkit-mask-image: linear-gradient(to right, #000 65%, transparent);
  mask-image: linear-gradient(to right, #000 65%, transparent);
}
.rainbow-beam::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.85), transparent) 0 0 / 25% 100% repeat-x;
  animation: shimmer 0.35s linear infinite;
}
.unicorn.go .rainbow-beam { animation: beam 1.5s 0.35s ease-out forwards; }

.unicorn-say {
  position: absolute;
  bottom: 96%;
  left: 10%;
  white-space: nowrap;
  padding: 6px 12px;
  font-family: 'Bungee', sans-serif;
  font-size: 0.9rem;
  color: #000;
  background: #fff;
  border: 3px solid #000;
  border-radius: 14px;
  box-shadow: 0 4px 0 #000;
  transform: rotate(-6deg) scale(0);
}
.unicorn.go .unicorn-say { animation: sayPop 1.9s 0.15s ease-out forwards; }

.game-wrap {
  position: relative;
  z-index: 1;
  border: 4px solid #000;
  border-radius: 16px;
  overflow: hidden;
  background: radial-gradient(circle at 50% 40%, var(--night-2), var(--night) 72%);
  animation: glow 3s ease-in-out infinite;
}

.scoreboard {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 18px;
  font-family: 'Bungee', sans-serif;
  background: rgba(0, 0, 0, 0.45);
  border-bottom: 3px dashed rgba(255, 255, 255, 0.25);
}

.side { display: flex; align-items: center; gap: 12px; }
.label { font-size: clamp(0.75rem, 2.4vw, 1.1rem); }
.you .label { color: var(--cyan); text-shadow: 0 0 10px var(--cyan); }
.bot .label { color: var(--pink); text-shadow: 0 0 10px var(--pink); }

.num {
  display: inline-block;
  min-width: 1.4em;
  text-align: center;
  font-size: clamp(1.4rem, 5vw, 2.4rem);
  color: var(--yellow);
  text-shadow: 0 0 14px var(--yellow);
}
.num.pop { animation: pop 0.5s ease-out; }

.vs {
  font-size: clamp(0.8rem, 2.4vw, 1.1rem);
  color: #fff;
  opacity: 0.75;
  animation: hue 4s linear infinite;
}

.arena { position: relative; }

#pong {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  touch-action: none;
  cursor: none;
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.25s, transform 0.25s cubic-bezier(.3, 1.6, .5, 1);
}
.overlay.show { opacity: 1; transform: scale(1); }

.overlay-big {
  font-family: 'Bungee', sans-serif;
  font-size: clamp(1.6rem, 7vw, 4rem);
  color: var(--yellow);
  text-shadow: 0 0 20px var(--pink), 0 0 40px var(--pink), 0 5px 0 #000;
  animation: pulse 1s ease-in-out infinite;
}

.overlay-small {
  font-size: clamp(0.85rem, 2.6vw, 1.2rem);
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
}
.overlay-small:empty { display: none; }

/* ---------- Controls ---------- */

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  font-family: 'Bungee', sans-serif;
  font-size: 0.95rem;
  padding: 12px 20px;
  border: 3px solid #000;
  border-radius: 999px;
  color: #000;
  cursor: pointer;
  box-shadow: 0 6px 0 #000;
  transition: transform 0.08s, box-shadow 0.08s;
  touch-action: manipulation;
}
.btn:hover { transform: translateY(-2px) rotate(-2deg); box-shadow: 0 8px 0 #000; }
.btn:active { transform: translateY(5px); box-shadow: 0 1px 0 #000; }
.btn:focus-visible { outline: 4px solid #fff; outline-offset: 3px; }
.btn-cyan { background: var(--cyan); }
.btn-pink { background: var(--pink); }
.btn-yellow { background: var(--yellow); }
body.party #party-btn { animation: hue 1s linear infinite, wiggle 0.4s ease-in-out infinite; }

.hint {
  text-align: center;
  font-weight: 600;
  margin: 18px auto 0;
  padding: 8px 16px;
  max-width: 640px;
  border-radius: 14px;
  background: rgba(11, 0, 32, 0.55);
}
.hint-touch { display: none; }
@media (pointer: coarse) {
  .hint-mouse { display: none; }
  .hint-touch { display: inline; }
}

footer {
  margin: 28px 0 24px;
  padding: 0 16px;
  text-align: center;
  font-weight: 600;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.3);
}

kbd {
  font-family: 'Bungee', monospace;
  padding: 2px 8px;
  border-radius: 6px;
  color: #000;
  background: var(--yellow);
  box-shadow: 0 3px 0 #000;
}

/* ---------- Keyframes ---------- */

@keyframes bgshift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes wave {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-14px) rotate(-6deg); }
  75% { transform: translateY(6px) rotate(4deg); }
}
@keyframes hue { to { filter: hue-rotate(360deg); } }
@keyframes boing {
  0% { transform: scale(1); }
  30% { transform: scale(1.6, 0.6) translateY(10px); }
  55% { transform: scale(0.8, 1.4) translateY(-30px) rotate(20deg); }
  100% { transform: scale(1) rotate(360deg); }
}
@keyframes titleSpin {
  0% { transform: rotate(0) scale(1); }
  50% { transform: rotate(180deg) scale(0.6); }
  100% { transform: rotate(360deg) scale(1); }
}
@keyframes bob {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-6px) rotate(1deg); }
}
@keyframes blink {
  0%, 49% { background: var(--yellow); box-shadow: 0 0 10px var(--yellow), 0 0 22px #ffae00; }
  50%, 100% { background: #8a6400; box-shadow: none; }
}
@keyframes glow {
  0%, 100% { box-shadow: 0 0 22px var(--cyan), 0 0 60px rgba(0, 240, 255, 0.35); }
  50% { box-shadow: 0 0 22px var(--pink), 0 0 60px rgba(255, 47, 214, 0.45); }
}
@keyframes floatUp {
  from { transform: translateY(15vh) rotate(0deg); }
  to { transform: translateY(-115vh) rotate(360deg); }
}
@keyframes pop {
  0% { transform: scale(1); }
  40% { transform: scale(1.9) rotate(-10deg); }
  100% { transform: scale(1); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}
@keyframes unicornRide {
  0% { opacity: 0; transform: translateY(80px) scale(0.3) rotate(-30deg); }
  15% { opacity: 1; transform: translateY(-10px) scale(1.1) rotate(-12deg); }
  25% { transform: translateY(0) scale(1) rotate(-8deg); }
  50% { transform: translateY(-6px) scale(1) rotate(-12deg); }
  80% { opacity: 1; transform: translateY(0) scale(1) rotate(-8deg); }
  100% { opacity: 0; transform: translateY(80px) scale(0.4) rotate(10deg); }
}
@keyframes beam {
  0% { opacity: 1; transform: rotate(-32deg) scaleX(0) scaleY(0.4); }
  20% { opacity: 1; transform: rotate(-32deg) scaleX(1) scaleY(1.25); }
  70% { opacity: 1; transform: rotate(-32deg) scaleX(1) scaleY(1); }
  100% { opacity: 0; transform: rotate(-32deg) scaleX(1) scaleY(0.2); }
}
@keyframes shimmer { to { background-position: 33.33% 0; } }
@keyframes sayPop {
  0% { transform: rotate(-6deg) scale(0); }
  15% { transform: rotate(-6deg) scale(1.2); }
  25%, 80% { transform: rotate(-6deg) scale(1); }
  100% { transform: rotate(-6deg) scale(0); }
}
@keyframes wiggle {
  0%, 100% { rotate: -4deg; }
  50% { rotate: 4deg; }
}

/* ---------- Small screens ---------- */

@media (max-width: 600px) {
  .marquee { padding: 22px; border-radius: 20px; }
  .bulb { width: 10px; height: 10px; }
  .scoreboard { padding: 8px 10px; }
  .side { gap: 6px; }
  .btn { font-size: 0.8rem; padding: 10px 14px; }
  .floatie { font-size: 1.6rem; }
  .unicorn { width: 96px; left: -10px; bottom: -16px; }
  .rainbow-beam { width: 700px; height: 38px; margin-top: -19px; }
  .unicorn-say { font-size: 0.7rem; }
}

@media (max-width: 380px) {
  .scoreboard { padding: 6px 8px; }
  .side { gap: 4px; }
  .label { font-size: 0.62rem; }
  .num { font-size: 1.25rem; min-width: 1.1em; }
  .vs { font-size: 0.65rem; }
}

/* Phone held sideways: shrink the header and size the game to fit the screen height. */
@media (orientation: landscape) and (max-height: 520px) {
  .hero { padding-top: 10px; }
  #title { font-size: clamp(1.8rem, 6vw, 3rem); }
  .tagline { margin-top: 8px; padding: 4px 14px; }
  main {
    padding-top: 14px;
    max-width: calc((100vh - 110px) * 1.6 + 76px);
    max-width: calc((100svh - 110px) * 1.6 + 76px);
  }
  .marquee { padding: 18px; }
  .scoreboard { padding: 6px 12px; }
  .label { font-size: 0.85rem; }
  .num { font-size: 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  body, .sunburst, .letter, .tagline, .bulb, .game-wrap, .overlay-big, .vs, .floatie { animation: none !important; }
  .floatie { display: none; }
}