* {
  box-sizing: border-box;
}

:root {
  --sun: #ffd93d;
  --orange: #ff8a3d;
  --pink: #ff5d8f;
  --sky: #6ec6ff;
  --grass: #7ed957;
  --ink: #2b2140;
  --paper: #fff8e7;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Trebuchet MS', 'Segoe UI', system-ui, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #000000 0%, #e8f9ff 45%, #b7e074 100%);
  min-height: 100vh;
}

/* ---------- top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1.2rem;
  background: rgba(255, 248, 231, 0.92);
  border-bottom: 3px solid var(--ink);
}

.topbar__logo {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
}

.topbar__logo span {
  background: linear-gradient(90deg, var(--orange), var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.topbar__nav a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  margin-left: 1rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  transition: background 0.2s, transform 0.2s;
}

.topbar__nav a:hover {
  background: var(--sun);
  transform: translateY(-2px);
}

/* ---------- hero ---------- */
.hero {
  text-align: center;
  padding: 3rem 1.25rem 2rem;
}

.hero h1 {
  margin: 0 auto;
  max-width: 700px;
  font-size: clamp(1.8rem, 5vw, 3rem);
  line-height: 1.15;
}

.hero h1 em {
  font-style: normal;
  color: var(--pink);
}

.hero__lead {
  margin: 1rem auto 0;
  max-width: 560px;
  font-size: 1.05rem;
  line-height: 1.6;
  color: #4a4160;
}

.hero__cta {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.85rem 1.9rem;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
  background: var(--sun);
  border: 3px solid var(--ink);
  border-radius: 999px;
  box-shadow: 0 6px 0 var(--ink);
  transition: transform 0.12s, box-shadow 0.12s;
}

.hero__cta:hover {
  transform: translateY(3px);
  box-shadow: 0 3px 0 var(--ink);
}

/* ---------- game ---------- */
.game {
  padding: 1rem 1.25rem 2.5rem;
}

.game__panel {
  position: relative;
  max-width: 940px;
  margin: 0 auto;
  padding: 0.9rem;
  background: var(--paper);
  border: 4px solid var(--ink);
  border-radius: 26px;
  box-shadow: 0 14px 0 rgba(43, 33, 64, 0.25);
}

.hud {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 0.7rem;
}

.hud__item {
  padding: 0.35rem 0.9rem;
  font-weight: 700;
  background: #fff;
  border: 3px solid var(--ink);
  border-radius: 999px;
}

.hud__item--live {
  background: #ffe1ea;
}

#game-canvas {
  display: block;
  width: 100%;
  height: auto;
  background: linear-gradient(180deg, #8ed7ff 0%, #d6f3ff 70%, #bdf08a 70%, #9de06a 100%);
  border: 4px solid var(--ink);
  border-radius: 18px;
  touch-action: manipulation;
  cursor: pointer;
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(43, 33, 64, 0.55);
  border-radius: 26px;
  padding: 1rem;
}

.overlay.is-hidden {
  display: none;
}

.overlay__box {
  text-align: center;
  max-width: 380px;
  padding: 1.4rem 1.6rem;
  background: var(--paper);
  border: 4px solid var(--ink);
  border-radius: 22px;
  box-shadow: 0 10px 0 rgba(0, 0, 0, 0.3);
}

.overlay__emoji {
  font-size: 3rem;
  animation: bounce 1s infinite alternate ease-in-out;
}

.overlay__box h2 {
  margin: 0.4rem 0 0.3rem;
  font-size: 1.4rem;
}

.overlay__box p {
  margin: 0 0 1rem;
  color: #5a5175;
  font-size: 0.95rem;
}

.btn {
  padding: 0.7rem 1.7rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 800;
  color: var(--ink);
  background: var(--grass);
  border: 3px solid var(--ink);
  border-radius: 999px;
  box-shadow: 0 5px 0 var(--ink);
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s;
}

.btn:hover {
  transform: translateY(2px);
  box-shadow: 0 3px 0 var(--ink);
}

.btn:active {
  transform: translateY(5px);
  box-shadow: 0 0 0 var(--ink);
}

.btn--small {
  padding: 0.5rem 1.2rem;
  font-size: 0.95rem;
  background: var(--sun);
}

.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-top: 0.7rem;
  flex-wrap: wrap;
}

.controls__hint {
  font-size: 0.88rem;
  color: #6a6185;
  font-weight: 700;
}

/* ---------- cards ---------- */
.cards,
.facts {
  max-width: 940px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2.5rem;
}

.cards h2,
.facts h2 {
  text-align: center;
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  margin: 0 0 1.4rem;
}

.cards__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.card {
  padding: 1.2rem 1.1rem;
  background: #fff;
  border: 4px solid var(--ink);
  border-radius: 20px;
  box-shadow: 0 8px 0 rgba(43, 33, 64, 0.2);
  transition: transform 0.15s;
}

.card:hover {
  transform: translateY(-6px) rotate(-1deg);
}

.card__emoji {
  font-size: 2rem;
}

.card h3 {
  margin: 0.5rem 0 0.35rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: #5a5175;
  line-height: 1.5;
  font-size: 0.95rem;
}

/* ---------- facts ---------- */
.facts__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.facts__list li {
  padding: 0.85rem 1.1rem;
  background: #fff;
  border: 3px dashed var(--orange);
  border-radius: 16px;
  line-height: 1.5;
}

/* ---------- footer ---------- */
.footer {
  text-align: center;
  padding: 1.5rem 1rem 2rem;
  font-weight: 700;
  color: #6a6185;
}

@keyframes bounce {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-14px);
  }
}

@media (max-width: 560px) {
  .topbar {
    flex-direction: column;
    gap: 0.4rem;
  }
  .topbar__nav a {
    margin: 0 0.2rem;
    font-size: 0.9rem;
  }
}