:root {
  --ink: #233456;
  --muted: #71809a;
  --paper: #fffdf8;
  --purple: #6f72dc;
  --purple-dark: #5054b7;
  --aqua: #55c7bd;
  --yellow: #ffc967;
  --coral: #ff806f;
  --shadow: 0 20px 55px rgba(35, 52, 86, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--ink);
  font-family: "Nunito", sans-serif;
  background:
    radial-gradient(circle at 2% 13%, rgba(111, 114, 220, .18) 0 130px, transparent 131px),
    radial-gradient(circle at 98% 38%, rgba(85, 199, 189, .18) 0 185px, transparent 186px),
    linear-gradient(145deg, #fff8e9, #f2f8ff 62%, #eefaf5);
}

button { color: inherit; font: inherit; }

.topbar {
  position: relative;
  z-index: 20;
  height: 72px;
  padding: 0 clamp(18px, 5vw, 72px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(35, 52, 86, .08);
  background: rgba(255, 253, 248, .86);
  backdrop-filter: blur(14px);
}

.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 41px;
  height: 41px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: white;
  background: var(--purple);
  font-size: 22px;
  transform: rotate(-5deg);
  box-shadow: 0 7px 16px rgba(111, 114, 220, .27);
}
.brand-name { font: 800 22px/1 "Baloo 2", cursive; }
.brand-name small {
  display: block;
  color: var(--purple-dark);
  font: 800 9px/1.3 "Nunito", sans-serif;
  letter-spacing: 1.6px;
}
.top-actions { display: flex; gap: 9px; }
.icon-btn {
  width: 41px;
  height: 41px;
  display: grid;
  place-items: center;
  border: 1px solid #e5e3dc;
  border-radius: 13px;
  background: white;
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(35, 52, 86, .05);
  transition: .18s ease;
}
.icon-btn:hover { transform: translateY(-2px); }

main {
  width: min(1220px, calc(100% - 30px));
  margin: 0 auto;
  padding: 31px 0 46px;
}

.welcome {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
  margin-bottom: 18px;
}
.eyebrow {
  margin: 0 0 3px;
  color: var(--purple-dark);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 1.8px;
  text-transform: uppercase;
}
h1 { margin: 0; font: 800 clamp(30px, 4vw, 42px)/1.05 "Baloo 2", cursive; }
.welcome-copy { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.target-pill {
  flex: 0 0 auto;
  padding: 10px 15px;
  border: 1px solid #e3e3ef;
  border-radius: 15px;
  background: white;
  color: var(--purple-dark);
  font-size: 12px;
  font-weight: 900;
  box-shadow: 0 8px 22px rgba(35, 52, 86, .05);
}

.game-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 255px;
  overflow: hidden;
  border: 1px solid rgba(35, 52, 86, .1);
  border-radius: 29px;
  background: rgba(255, 255, 255, .9);
  box-shadow: var(--shadow);
}
.game-panel { min-width: 0; padding: 16px; background: #eef2fb; }
.game-toolbar {
  min-height: 53px;
  margin-bottom: 12px;
  padding: 8px 9px 8px 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border: 1px solid rgba(35, 52, 86, .08);
  border-radius: 15px;
  background: rgba(255, 255, 255, .96);
}
.game-toolbar p { margin: 0; color: var(--muted); font-size: 12px; font-weight: 800; }
.toolbar-actions { flex: 0 0 auto; display: flex; gap: 8px; }
.primary-btn,
.secondary-btn {
  min-height: 39px;
  padding: 9px 15px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 900;
  cursor: pointer;
  transition: .16s ease;
}
.primary-btn {
  border: 0;
  background: var(--purple);
  color: white;
  box-shadow: 0 7px 15px rgba(111, 114, 220, .26);
}
.secondary-btn { border: 2px solid #dfe1ec; background: white; }
.primary-btn:hover,
.secondary-btn:hover:not(:disabled) { transform: translateY(-1px); }
.secondary-btn:disabled { opacity: .46; cursor: default; }

.canvas-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 5px solid white;
  border-radius: 23px;
  background: #f8fcff;
  box-shadow: inset 0 0 0 1px rgba(35, 52, 86, .08), 0 12px 28px rgba(35, 52, 86, .12);
}
#collisionCanvas {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  display: block;
  touch-action: none;
  user-select: none;
  cursor: crosshair;
}
#collisionCanvas:focus-visible { outline: 4px solid rgba(111, 114, 220, .55); outline-offset: -4px; }
.orientation-note {
  position: absolute;
  inset: 0;
  z-index: 9;
  display: none;
  place-items: center;
  padding: 28px;
  background: rgba(35, 52, 86, .92);
  color: white;
  text-align: center;
  font: 800 18px/1.4 "Baloo 2", cursive;
}
.question-overlay {
  position: absolute;
  inset: 0;
  z-index: 7;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(35, 52, 86, .5);
  backdrop-filter: blur(5px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: .2s ease;
}
.question-overlay.show { opacity: 1; visibility: visible; pointer-events: auto; }
.question-card {
  width: min(520px, 100%);
  padding: clamp(20px, 4vw, 30px);
  border: 3px solid rgba(255, 201, 103, .72);
  border-radius: 24px;
  background: white;
  text-align: center;
  box-shadow: 0 24px 65px rgba(20, 30, 55, .3);
}
.question-tag {
  display: inline-block;
  margin: 0 0 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #fff2d8;
  color: #8a5c12;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .8px;
  text-transform: uppercase;
}
.question-card h2 { margin: 0; font: 800 clamp(20px, 3vw, 27px)/1.2 "Baloo 2", cursive; }
.question-hint { margin: 7px 0 17px; color: var(--muted); font-size: 12px; font-weight: 800; }
.question-answers { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.question-answer {
  min-height: 46px;
  padding: 10px 12px;
  border: 2px solid #dfe1ec;
  border-radius: 13px;
  background: #f9faff;
  color: var(--ink);
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
  transition: .16s ease;
}
.question-answer:hover { border-color: var(--purple); background: #f0f0ff; transform: translateY(-1px); }
.question-answer:focus-visible { outline: 3px solid rgba(111, 114, 220, .35); outline-offset: 2px; }
.question-feedback { min-height: 18px; margin: 12px 0 0; color: #b34b45; font-size: 12px; font-weight: 900; }
.complete-overlay {
  position: absolute;
  inset: 0;
  z-index: 8;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(35, 52, 86, .46);
  backdrop-filter: blur(5px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: .2s ease;
}
.complete-overlay.show { opacity: 1; visibility: visible; pointer-events: auto; }
.complete-card {
  width: min(390px, 100%);
  padding: 27px;
  border-radius: 24px;
  background: white;
  text-align: center;
  box-shadow: 0 24px 65px rgba(20, 30, 55, .28);
}
.complete-icon { font-size: 48px; }
.complete-card h2 { margin: 3px 0; font: 800 29px/1.08 "Baloo 2", cursive; }
.complete-card p { margin: 7px 0 18px; color: var(--muted); font-size: 13px; }

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 13px;
  padding: 22px 19px;
  background: #fffdf8;
}
.mission-card {
  min-height: 155px;
  padding: 18px 15px;
  display: grid;
  place-content: center;
  overflow: hidden;
  border-radius: 20px;
  background: linear-gradient(145deg, #aaaafa, #d7d7ff);
  text-align: center;
}
.mission-card span { font-size: 49px; }
.mission-card h2 { margin: 3px 0 0; font: 800 21px/1 "Baloo 2", cursive; }
.mission-card p {
  margin: 5px 0 0;
  color: #45498d;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .8px;
  text-transform: uppercase;
}
.side-card { padding: 15px; border: 1px solid #e8e7e0; border-radius: 17px; background: white; }
.side-card h3 { margin: 0 0 8px; font: 800 16px/1.1 "Baloo 2", cursive; }
.side-card p,
.side-card li { color: var(--muted); font-size: 11px; font-weight: 800; line-height: 1.45; }
.side-card ol { margin: 0; padding-left: 19px; }
.side-card p { margin: 0; }
.tip-card { background: #eefaf7; border-color: #d8eeea; }
.keyboard-tip { margin: auto 0 0; color: var(--muted); font-size: 10px; font-weight: 800; text-align: center; }
kbd {
  padding: 2px 6px;
  border: 1px solid #d5d7e1;
  border-bottom-width: 2px;
  border-radius: 5px;
  background: white;
  color: var(--ink);
  font-size: 9px;
}

@media (max-width: 900px) {
  .game-shell { grid-template-columns: minmax(0, 1fr); }
  .side-panel { display: grid; grid-template-columns: 170px 1fr 1fr; align-items: stretch; }
  .mission-card { min-height: 135px; }
  .keyboard-tip { grid-column: 1 / -1; }
}

@media (max-width: 650px) {
  .topbar { padding: 0 13px; }
  .brand-name { font-size: 18px; }
  main { width: calc(100% - 16px); padding-top: 20px; }
  .welcome { align-items: start; }
  .welcome-copy { font-size: 12px; }
  .target-pill { padding: 8px 10px; }
  .game-shell { border-radius: 22px; }
  .game-panel { padding: 9px; }
  .game-toolbar { align-items: stretch; flex-direction: column; padding: 10px; }
  .toolbar-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .canvas-wrap { border-width: 3px; border-radius: 18px; }
  .side-panel { grid-template-columns: 1fr 1fr; padding: 13px; }
  .mission-card { grid-column: 1 / -1; min-height: 105px; }
  .mission-card span { font-size: 35px; }
  .question-card { padding: 18px; }
  .question-answers { grid-template-columns: 1fr; gap: 7px; }
  .question-answer { min-height: 40px; }
}

@media (max-width: 520px) and (orientation: portrait) {
  .orientation-note { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .complete-overlay,
  .question-overlay { transition: none; }
}