:root {
  --sky: #6ec3ff;
  --sky-deep: #3a8dff;
  --sun: #ffd166;
  --coral: #ff6b6b;
  --mint: #51cf66;
  --grape: #845ef7;
  --pink: #f783ac;
  --cream: #fff8ee;
  --card: #ffffff;
  --ink: #2b2d42;
  --muted: #5c6278;
  --line: #eadfce;
  --home-row: #fff3bf;
  --key: #f4efe6;
  --key-hi: #ffd43b;
  --shadow: 0 16px 40px rgba(43, 45, 66, 0.14);
  --radius: 24px;
  --font: "Trebuchet MS", "Segoe UI", "Nunito", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: linear-gradient(180deg, #c5e8ff 0%, #ffe8c2 55%, #ffd6e8 100%);
  overflow-x: hidden;
}

button, input { font-family: inherit; }
button { cursor: pointer; }

.bg-blobs { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(8px);
  opacity: 0.45;
  animation: float 14s ease-in-out infinite;
}
.b1 { width: 280px; height: 280px; background: #ffd6e0; top: -40px; left: -40px; }
.b2 { width: 320px; height: 320px; background: #c5b4ff; right: -80px; top: 20%; animation-delay: -4s; }
.b3 { width: 240px; height: 240px; background: #b2f2bb; bottom: 8%; left: 30%; animation-delay: -7s; }

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(24px) scale(1.06); }
}

.topbar {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 22px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 3px solid #fff;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 0;
  background: transparent;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--grape);
}
.brand-mark { font-size: 1.6rem; }
.player-chip {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  flex-wrap: wrap;
}
.name-btn {
  border: 0;
  background: #fff;
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 700;
  box-shadow: 0 4px 0 #eadfce;
}
.level-block { min-width: 180px; }
.level-label { font-size: 0.85rem; color: var(--muted); }
.xp-track {
  height: 10px;
  background: #efe6d8;
  border-radius: 999px;
  overflow: hidden;
  margin: 4px 0;
}
.xp-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--grape), var(--pink));
  transition: width 0.4s ease;
}
.xp-text { font-size: 0.75rem; color: var(--muted); }
.star-count { font-weight: 700; }
.top-actions { display: flex; gap: 8px; }
.icon-btn {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 0;
  background: #fff;
  font-size: 1.2rem;
  box-shadow: 0 4px 0 #eadfce;
}
.icon-btn:active, .name-btn:active, .btn:active, .mode-card:active { transform: translateY(2px); box-shadow: 0 2px 0 #eadfce; }

#app { position: relative; z-index: 1; max-width: 1100px; margin: 0 auto; padding: 28px 20px 60px; }
.screen { display: none; animation: rise 0.45s ease; }
.screen.active { display: block; }
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

.hero-banner { text-align: center; margin-bottom: 28px; }
.eyebrow {
  display: inline-block;
  background: #fff;
  color: var(--grape);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: 999px;
}
h1 { margin: 10px 0; font-size: clamp(1.8rem, 4vw, 2.8rem); }
.lede { color: var(--muted); font-size: 1.1rem; max-width: 560px; margin: 0 auto; }

.mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.mode-card {
  text-align: left;
  border: 0;
  background: var(--card);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  min-height: 240px;
  transition: transform 0.2s ease;
}
.mode-card:hover { transform: translateY(-6px) rotate(-0.4deg); }
.mode-card.academy { background: linear-gradient(180deg, #fff 60%, #e7f5ff); }
.mode-card.rush { background: linear-gradient(180deg, #fff 60%, #fff3bf); }
.mode-card.adventure { background: linear-gradient(180deg, #fff 60%, #d3f9d8); }
.mode-emoji { font-size: 2.4rem; }
.mode-card h2 { margin: 8px 0 6px; }
.mode-card p { color: var(--muted); margin: 0 0 16px; }
.mode-meta {
  display: inline-block;
  background: var(--ink);
  color: #fff;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.howto {
  margin-top: 28px;
  background: rgba(255,255,255,0.7);
  border-radius: var(--radius);
  padding: 18px 24px;
}
.howto ol { margin: 8px 0 0; padding-left: 20px; color: var(--muted); }

.screen-head { margin-bottom: 18px; }
.screen-head.compact { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.screen-head.compact h1 { flex: 1; margin: 0; font-size: 1.6rem; }
.back-btn {
  border: 0;
  background: #fff;
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 700;
  box-shadow: 0 4px 0 #eadfce;
}
.stat-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.stat-pills span {
  background: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.85rem;
  color: var(--muted);
}
.stat-pills strong { color: var(--ink); }

.lesson-grid, .achieve-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}
.lesson-card, .achieve-card {
  background: #fff;
  border: 0;
  border-radius: 20px;
  padding: 16px;
  text-align: left;
  box-shadow: var(--shadow);
}
.lesson-card.locked { opacity: 0.55; cursor: not-allowed; filter: grayscale(0.4); }
.lesson-card .keys { color: var(--grape); font-weight: 800; letter-spacing: 0.12em; }
.stars { color: #fab005; letter-spacing: 2px; }

.play-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.prompt-hint { color: var(--muted); margin-top: 0; }
.prompt-line, .rush-word {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  min-height: 2.6em;
  line-height: 1.5;
  word-break: break-word;
}
.ch { padding: 0 1px; border-radius: 6px; }
.ch.done { color: #2b8a3e; }
.ch.now {
  background: var(--sun);
  color: var(--ink);
  box-shadow: 0 0 0 3px rgba(255, 209, 102, 0.5);
  animation: pulse 0.9s ease infinite;
}
.ch.bad { background: #ffa8a8; animation: shake 0.28s ease; }
.ch.wait { color: #8d93a6; }
@keyframes pulse {
  50% { transform: translateY(-2px); }
}
@keyframes shake {
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.kb-wrap { margin-top: 18px; overflow-x: auto; }
.keyboard {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}
.kb-row { display: flex; gap: 6px; }
.key {
  min-width: 42px;
  height: 46px;
  padding: 0 8px;
  border-radius: 10px;
  background: var(--key);
  border: 0;
  box-shadow: 0 4px 0 #d4cbbd;
  font-weight: 800;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
  font-size: 0.85rem;
}
.key.home { background: var(--home-row); }
.key.wide { min-width: 72px; }
.key.space { min-width: 280px; }
.key.next {
  background: var(--key-hi);
  transform: translateY(-3px);
  box-shadow: 0 7px 0 #f59f00;
}
.key.ok { background: #8ce99a; }
.key.no { background: #ffa8a8; }
.kb-wrap.compact .key { min-width: 34px; height: 38px; font-size: 0.75rem; }
.kb-wrap.compact .key.space { min-width: 200px; }

.feedback { min-height: 1.4em; font-weight: 700; color: var(--grape); }
.feedback.bad { color: var(--coral); }
.feedback.good { color: #2b8a3e; }

.timer-track {
  height: 14px;
  background: #efe6d8;
  border-radius: 999px;
  overflow: hidden;
}
.timer-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--mint), var(--sun), var(--coral));
  transform-origin: left center;
}
.rush-word { text-align: center; font-size: 3rem; margin: 12px 0; }
.wave-label { text-align: center; font-weight: 800; color: var(--grape); }

.trail {
  display: grid;
  gap: 14px;
}
.stage-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #fff;
  border: 0;
  border-radius: 20px;
  padding: 16px 18px;
  text-align: left;
  box-shadow: var(--shadow);
  width: 100%;
}
.stage-card.locked { opacity: 0.5; cursor: not-allowed; }
.stage-card.boss { background: linear-gradient(90deg, #fff, #ffe3e3); }
.stage-emoji { font-size: 2.2rem; }
.stage-card h3 { margin: 0; }
.stage-card p { margin: 4px 0 0; color: var(--muted); }

.battle {
  display: flex;
  justify-content: space-around;
  align-items: center;
  background: linear-gradient(180deg, #d0ebff, #fff);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}
.fighter { text-align: center; }
.sprite { font-size: 4rem; animation: bob 1.6s ease-in-out infinite; }
.fighter.foe .sprite { animation-delay: -0.4s; }
.sprite.hit { animation: shake 0.35s ease; }
.sprite.win { animation: bounce 0.6s ease; }
@keyframes bob {
  50% { transform: translateY(-8px); }
}
@keyframes bounce {
  50% { transform: scale(1.2) translateY(-10px); }
}
.vs { font-weight: 900; color: var(--coral); font-size: 1.4rem; }
.hp-track { width: 120px; height: 10px; background: #ffe3e3; border-radius: 999px; overflow: hidden; margin: 6px auto 0; }
.hp-fill { height: 100%; width: 100%; background: var(--coral); transition: width 0.3s ease; }
.flavor { text-align: center; font-weight: 700; color: var(--muted); }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(43, 45, 66, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  padding: 20px;
}
.overlay.hidden { display: none; }
.modal {
  background: #fff;
  border-radius: 28px;
  padding: 28px;
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow);
}
.modal.wide { max-width: 720px; text-align: left; }
.modal-actions { display: flex; gap: 10px; justify-content: center; margin-top: 16px; flex-wrap: wrap; }
.btn {
  border: 0;
  background: #fff3bf;
  color: var(--ink);
  font-weight: 800;
  padding: 10px 18px;
  border-radius: 999px;
  box-shadow: 0 4px 0 #f0c36d;
}
.btn.primary { background: var(--grape); color: #fff; box-shadow: 0 4px 0 #5f3dc4; }
.stars-big { font-size: 2rem; margin: 8px 0; }

.achieve-card.locked { opacity: 0.45; }
.achieve-card h3 { margin: 6px 0 4px; }
.achieve-card p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--ink);
  color: #fff;
  padding: 12px 18px;
  border-radius: 999px;
  z-index: 30;
  opacity: 0;
  transition: 0.3s ease;
  font-weight: 700;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.fx-layer { position: fixed; inset: 0; pointer-events: none; z-index: 25; overflow: hidden; }
.spark {
  position: absolute;
  font-size: 1.4rem;
  animation: spark 0.8s ease forwards;
}
@keyframes spark {
  to { transform: translateY(-80px) scale(1.4); opacity: 0; }
}

@media (max-width: 720px) {
  .topbar { flex-wrap: wrap; }
  .key.space { min-width: 140px; }
  .battle { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}