:root {
  --sky-top: #8fd3ff;
  --sky-bottom: #e6f7ff;
  --grass: #7ed957;
  --grass-dark: #4fb23a;
  --ladybug-red: #e8222b;
  --sun: #ffd43b;
  --ink: #2b2d42;
  --font-main: "Baloo 2", "Arial Rounded MT Bold", "Comic Sans MS", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; height: 100%; }

body {
  height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--font-main);
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 8%, var(--sun) 0 55px, transparent 56px),
    linear-gradient(to bottom, var(--sky-top), var(--sky-bottom) 62%, var(--grass) 62.1%);
  overflow-x: hidden;
}

.hidden { display: none !important; }

.cloud {
  position: fixed;
  width: 140px;
  height: 44px;
  background: #fff;
  border-radius: 50px;
  opacity: 0.9;
  z-index: 0;
  animation: drift 60s linear infinite;
}
.cloud::before, .cloud::after {
  content: "";
  position: absolute;
  background: #fff;
  border-radius: 50%;
}
.cloud::before { width: 60px; height: 60px; top: -28px; left: 22px; }
.cloud::after { width: 46px; height: 46px; top: -20px; left: 70px; }
.cloud-one { top: 14%; left: -160px; }
.cloud-two { top: 30%; left: -160px; animation-delay: -30s; transform: scale(0.7); }

@keyframes drift {
  to { translate: calc(100vw + 340px) 0; }
}

/* Header */
.top-bar {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1000px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px 0;
}

.mascot-small { width: 72px; height: 72px; animation: wiggle 3s ease-in-out infinite; }

.title {
  flex: 1;
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.6rem);
  font-weight: 800;
  line-height: 1;
  color: var(--ladybug-red);
  text-shadow: 3px 3px 0 #fff;
}

.round-button {
  width: 60px;
  height: 60px;
  border: 0;
  border-radius: 50%;
  background: #fff;
  font-size: 1.8rem;
  cursor: pointer;
  box-shadow: 0 5px 0 #c9d6df;
}
.round-button:active { transform: translateY(4px); box-shadow: 0 1px 0 #c9d6df; }

@keyframes wiggle {
  0%, 100% { rotate: -6deg; }
  50% { rotate: 6deg; }
}

.modes {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 14px;
  margin-top: 14px;
}

.mode-button {
  font: inherit;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-weight: 800;
  padding: 8px 22px;
  border: 0;
  border-radius: 40px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  box-shadow: 0 5px 0 #c9d6df;
}
.mode-button.active { background: var(--ladybug-red); color: #fff; box-shadow: 0 5px 0 #a3151c; }
.mode-button:active { transform: translateY(4px); }

.stage {
  position: relative;
  z-index: 1;
  flex: 1;
  min-height: 0;
  width: 100%;
  max-width: 1000px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 10px 16px 16px;
}

.word-picture { font-size: clamp(4rem, 14vw, 8rem); line-height: 1; animation: float 3s ease-in-out infinite; }

@keyframes float {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -10px; }
}

.board {
  min-height: 130px;
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-content: center;
  gap: 8px;
  padding: 14px;
  border: 5px dashed #fff;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.55);
}
.board.writing {
  flex: 1;
  min-height: 0;
  justify-content: flex-start;
  align-content: flex-start;
  overflow-y: auto;
}
.board.shake { animation: shake 0.35s; }

@keyframes shake {
  20% { translate: -10px 0; }
  40% { translate: 10px 0; }
  60% { translate: -6px 0; }
  80% { translate: 6px 0; }
}

.tile {
  width: clamp(46px, 10vw, 100px);
  height: clamp(60px, 13vw, 126px);
  display: grid;
  place-items: center;
  font-size: clamp(2.2rem, 8vw, 5.6rem);
  font-weight: 800;
  color: var(--tile-color);
  background: #fff;
  border-radius: 18px;
  border-bottom: 8px solid var(--tile-color);
}
.tile.new { animation: pop 0.35s cubic-bezier(0.3, 1.6, 0.5, 1); }
.tile.line-break { width: 100%; height: 0; border: 0; background: transparent; }
.tile.space { width: clamp(20px, 4vw, 40px); background: transparent; border: 0; }
.tile.empty { background: rgba(255, 255, 255, 0.5); color: transparent; border: 4px dashed var(--tile-color); border-bottom-width: 4px; }
.tile.next { animation: pulse 1s ease-in-out infinite; background: #fff8d6; }

@keyframes pop {
  from { scale: 0.2; rotate: -15deg; }
  to { scale: 1; rotate: 0deg; }
}
@keyframes pulse {
  50% { scale: 1.08; }
}

.helper-text { margin: 0; font-size: clamp(1rem, 2.6vw, 1.4rem); font-weight: 600; color: #fff; text-shadow: 1px 1px 0 var(--grass-dark); }

/* Surprise overlay */
.surprise {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.78);
  cursor: pointer;
}
.bubu-image {
  width: min(60vw, 60vh, 380px);
  height: auto;
  animation: bounce-in 1s cubic-bezier(0.3, 1.5, 0.5, 1), wiggle 1.2s 1s ease-in-out infinite;
}
.surprise-text {
  margin: 0;
  padding: 0 16px;
  text-align: center;
  font-size: clamp(2rem, 7vw, 4rem);
  font-weight: 800;
  color: var(--ladybug-red);
  text-shadow: 3px 3px 0 #fff;
}

@keyframes bounce-in {
  from { scale: 0; translate: 0 100px; }
  to { scale: 1; translate: 0 0; }
}

.confetti-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 20;
  pointer-events: none;
}

button:focus-visible { outline: 4px solid var(--ink); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  .cloud, .mascot-small, .word-picture, .tile.next { animation: none; }
}