/* ============================================================
   Rocket Launch Quiz — styles
   Wordless multiplication game. Color & icons only.
   ============================================================ */

:root {
  --space-1: #0b1026;
  --space-2: #1b2350;
  --good: #28e07a;
  --good-dark: #0fa855;
  --bad: #ff5d6c;
  --gold: #ffd23f;
  --locked: #3a4267;
  --ink: #f4f7ff;
  --accent: #5ad1ff;
  --fuel-full: #4ade80;
  --fuel-low: #ff5d6c;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background: var(--space-1);
  color: var(--ink);
  font-family: "Baloo 2", "Comic Sans MS", "Trebuchet MS", system-ui, sans-serif;
  user-select: none;
  -webkit-user-select: none;
}

/* Starfield behind everything */
#stars-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
}

#app {
  position: relative;
  z-index: 1;
  height: 100vh;
  width: 100vw;
}

/* ---------- Screen switching ---------- */
.screen {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
}
.screen.active { display: flex; }

/* ---------- Top bar / HUD ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  z-index: 5;
}
.topbar.over-canvas {
  position: absolute;
  top: 0; left: 0; right: 0;
}

.icon-btn {
  font-size: 30px;
  line-height: 1;
  background: rgba(255,255,255,0.08);
  border: 2px solid rgba(255,255,255,0.18);
  border-radius: 16px;
  padding: 8px 12px;
  cursor: pointer;
  color: var(--ink);
  transition: transform .12s ease, background .12s ease;
}
.icon-btn:hover { background: rgba(255,255,255,0.18); }
.icon-btn:active { transform: scale(0.9); }
.icon-btn.big { font-size: 46px; padding: 14px 20px; }

.coin-counter {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 28px;
  font-weight: 800;
  background: rgba(255, 210, 63, 0.15);
  border: 2px solid rgba(255, 210, 63, 0.4);
  border-radius: 16px;
  padding: 6px 14px;
  margin-left: auto;
}
.coin-icon { font-size: 26px; }
.coin-icon.big { font-size: 40px; }
.coin-bump { animation: coinBump .4s ease; }

/* ============================================================
   MISSION MAP
   ============================================================ */
#planet-trail {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column-reverse; /* planet 1 at bottom, climb upward */
  align-items: center;
  gap: 28px;
  padding: 40px 0 60px;
  scroll-behavior: smooth;
}

.planet-node {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: transform .15s ease;
}
.planet-node:hover { transform: scale(1.06); }
.planet-node.locked { cursor: not-allowed; filter: grayscale(0.9) brightness(0.5); }
.planet-node.locked:hover { transform: none; }

/* Offset planets left/right to make a winding trail */
.planet-node:nth-child(odd)  { margin-left: 120px; }
.planet-node:nth-child(even) { margin-right: 120px; }

.planet-emoji {
  font-size: 84px;
  line-height: 1;
  filter: drop-shadow(0 6px 10px rgba(0,0,0,0.5));
}
.planet-node.current .planet-emoji {
  animation: floaty 3s ease-in-out infinite;
}

.planet-table {
  margin-top: -6px;
  font-size: 30px;
  font-weight: 900;
  text-shadow: 0 2px 4px rgba(0,0,0,0.6);
}
.planet-table .x { color: var(--accent); }

.planet-stars {
  display: flex;
  gap: 2px;
  font-size: 22px;
  margin-top: 2px;
}
.planet-stars .on { color: var(--gold); }
.planet-stars .off { color: var(--locked); }

.planet-lock {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -60%);
  font-size: 40px;
}

#reset-zone {
  position: fixed;
  bottom: 0; left: 0;
  width: 70px; height: 70px;
  z-index: 20;
}

/* ============================================================
   MISSION / GAMEPLAY
   ============================================================ */
#game-canvas, #confetti-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.over-canvas { z-index: 5; }

/* Fuel bar */
.fuel-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}
.fuel-icon { font-size: 24px; }
/* When the timer is switched off (press T), dim the gauge to show it's idle */
.fuel-wrap.timer-off { opacity: 0.3; }
.fuel-track {
  width: 180px;
  height: 22px;
  background: rgba(0,0,0,0.4);
  border: 2px solid rgba(255,255,255,0.25);
  border-radius: 12px;
  overflow: hidden;
}
#fuel-fill {
  height: 100%;
  width: 100%;
  background: var(--fuel-full);
  border-radius: 10px;
  transition: width .1s linear, background .3s ease;
}

/* Flight progress dots */
.progress-dots {
  position: absolute;
  top: 64px; left: 0; right: 0;
  display: flex;
  justify-content: center;
  gap: 10px;
}
.progress-dots .dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  border: 2px solid rgba(255,255,255,0.35);
  transition: transform .2s ease, background .2s ease;
}
.progress-dots .dot.done {
  background: var(--good);
  border-color: var(--good);
  transform: scale(1.2);
}
.progress-dots .dot.goal { background: transparent; border: none; font-size: 18px; }
.progress-dots .dot.goal::after { content: "🪐"; }

/* Combo badge */
.combo-badge {
  position: absolute;
  top: 100px; right: 22px;
  font-size: 30px;
  font-weight: 900;
  color: var(--gold);
  opacity: 0;
  transform: scale(0.5);
}
.combo-badge.show {
  animation: comboPop .5s ease;
}

/* Equation */
.equation {
  position: absolute;
  top: 38%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: clamp(48px, 11vw, 110px);
  font-weight: 900;
  text-shadow: 0 4px 0 rgba(0,0,0,0.35), 0 0 30px rgba(90,209,255,0.3);
}
.eq-op { color: var(--accent); }
.eq-num { color: var(--ink); }

.eq-answer {
  display: inline-flex;
  align-items: center;
  min-width: 1.6em;
  height: 1.3em;
  padding: 0 14px;
  background: rgba(255,255,255,0.08);
  border: 4px dashed rgba(255,255,255,0.35);
  border-radius: 18px;
  color: var(--gold);
  justify-content: center;
}
.eq-answer.correct {
  background: rgba(40, 224, 122, 0.25);
  border-color: var(--good);
  border-style: solid;
  color: var(--good);
  animation: pop .4s ease;
}
.eq-answer.wrong {
  background: rgba(255, 93, 108, 0.2);
  border-color: var(--bad);
  border-style: solid;
  color: var(--bad);
  animation: shake .45s ease;
}
.caret {
  width: 4px;
  height: 1em;
  background: var(--gold);
  margin-left: 4px;
  animation: blink 1s steps(2) infinite;
}
.eq-answer.correct .caret,
.eq-answer.wrong .caret { display: none; }

/* Launch button */
.launch-btn {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  font-size: 52px;
  background: linear-gradient(180deg, #ff8a3d, #ff5d2e);
  border: none;
  border-radius: 50%;
  width: 96px; height: 96px;
  cursor: pointer;
  box-shadow: 0 8px 0 #b83c14, 0 12px 22px rgba(0,0,0,0.5);
  transition: transform .08s ease, box-shadow .08s ease;
}
.launch-btn:active {
  transform: translateX(-50%) translateY(6px);
  box-shadow: 0 2px 0 #b83c14, 0 6px 12px rgba(0,0,0,0.5);
}

/* Screen shake on correct */
#screen-mission.shake { animation: screenShake .3s ease; }

/* ============================================================
   REWARD
   ============================================================ */
#screen-reward {
  align-items: center;
  justify-content: center;
}
.reward-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding: 40px 60px;
  background: rgba(27, 35, 80, 0.85);
  border: 4px solid var(--gold);
  border-radius: 32px;
  box-shadow: 0 0 60px rgba(255, 210, 63, 0.4);
}
.reward-stars {
  display: flex;
  gap: 16px;
  font-size: 80px;
}
.reward-stars .rstar {
  color: var(--locked);
  transform: scale(0.3);
  opacity: 0;
}
.reward-stars .rstar.on {
  color: var(--gold);
  text-shadow: 0 0 24px var(--gold);
  animation: starPop .5s ease forwards;
}
.reward-sticker {
  font-size: 100px;
  transform: scale(0);
  animation: stickerDrop .6s cubic-bezier(.2,1.4,.4,1) .4s forwards;
}
.reward-coins {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 44px;
  font-weight: 900;
  color: var(--gold);
}
.reward-buttons { display: flex; gap: 28px; margin-top: 8px; }

/* ============================================================
   HANGAR
   ============================================================ */
.hangar-body {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding: 20px;
}
.hangar-preview {
  font-size: 120px;
  line-height: 1;
  animation: floaty 3s ease-in-out infinite;
  filter: drop-shadow(0 8px 14px rgba(0,0,0,0.5));
}
.skin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, 110px);
  gap: 16px;
  justify-content: center;
  max-width: 640px;
}
.skin-cell {
  position: relative;
  width: 110px; height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  background: rgba(255,255,255,0.06);
  border: 3px solid rgba(255,255,255,0.18);
  border-radius: 20px;
  cursor: pointer;
  transition: transform .12s ease, border-color .12s ease;
}
.skin-cell:hover { transform: scale(1.05); }
.skin-cell.equipped { border-color: var(--good); box-shadow: 0 0 18px var(--good); }
.skin-cell.locked { filter: grayscale(0.6) brightness(0.6); }
.skin-cell .price {
  position: absolute;
  bottom: -2px; right: -2px;
  font-size: 16px;
  font-weight: 800;
  background: var(--gold);
  color: #3a2c00;
  border-radius: 10px;
  padding: 1px 7px;
}
.skin-cell.too-expensive { animation: shake .4s ease; }

.sticker-shelf {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  max-width: 640px;
  padding: 14px;
  border-top: 2px dashed rgba(255,255,255,0.2);
}
.sticker-shelf .sticker { font-size: 40px; }
.sticker-shelf .sticker.empty { opacity: 0.2; }

/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes blink { 0% { opacity: 1; } 50% { opacity: 0; } 100% { opacity: 1; } }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes pop { 0% { transform: scale(1); } 40% { transform: scale(1.25); } 100% { transform: scale(1); } }
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20% { transform: translateX(-12px); }
  40% { transform: translateX(12px); }
  60% { transform: translateX(-8px); }
  80% { transform: translateX(8px); }
}
@keyframes screenShake {
  0%,100% { transform: translate(0,0); }
  25% { transform: translate(-6px, 4px); }
  50% { transform: translate(6px, -4px); }
  75% { transform: translate(-4px, -3px); }
}
@keyframes comboPop {
  0% { opacity: 0; transform: scale(0.5) translateY(10px); }
  40% { opacity: 1; transform: scale(1.3) translateY(0); }
  100% { opacity: 1; transform: scale(1); }
}
@keyframes starPop {
  0% { transform: scale(0.3) rotate(-30deg); opacity: 0; }
  60% { transform: scale(1.3) rotate(8deg); opacity: 1; }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}
@keyframes stickerDrop {
  0% { transform: scale(0) rotate(-40deg); }
  100% { transform: scale(1) rotate(0); }
}
@keyframes coinBump {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); color: var(--gold); }
  100% { transform: scale(1); }
}