* { box-sizing: border-box; }

:root {
  --bg-deep: #0a0e1a;
  --bg-mid: #141b2e;
  --accent: #ffd166;
  --accent2: #4CAF50;
  --panel: #1c2538;
  --panel-border: #2f3d56;
  --text: #eaf1fb;
  --text-dim: #93a4c0;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(76, 175, 80, 0.12), transparent 60%),
    radial-gradient(1200px 700px at 85% 110%, rgba(255, 209, 102, 0.10), transparent 60%),
    radial-gradient(circle at top, var(--bg-mid), var(--bg-deep) 70%);
  font-family: "Fredoka", "Trebuchet MS", Arial, sans-serif;
  color: var(--text);
  overflow-x: hidden;
}

#game-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 18px 0;
}

#hud {
  width: 960px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 16px;
  padding: 0 6px;
}

#hud-stats, #hud-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

#hud span {
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 999px;
  padding: 6px 16px;
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

#hud-level {
  font-family: "Baloo 2", "Fredoka", sans-serif;
  font-weight: 700;
  color: var(--accent);
  background: none !important;
  border: none !important;
  box-shadow: none !important;
  letter-spacing: 0.3px;
}

#hud b { color: var(--accent); }

#canvas-holder {
  position: relative;
  width: 960px;
  height: 540px;
  border-radius: 16px;
}

canvas {
  background: #101820;
  border: 4px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  box-shadow:
    0 0 0 6px rgba(76, 175, 80, 0.12),
    0 20px 50px rgba(0,0,0,0.55),
    inset 0 0 40px rgba(0,0,0,0.25);
  display: block;
}

#pause-hint {
  position: absolute;
  right: 16px;
  bottom: 12px;
  color: rgba(255,255,255,0.55);
  font-size: 11px;
  pointer-events: none;
  background: rgba(0,0,0,0.35);
  padding: 3px 9px;
  border-radius: 999px;
}

#hint {
  color: var(--text-dim);
  font-size: 13px;
  margin: 0;
  text-align: center;
}

.overlay {
  position: absolute;
  inset: 4px;
  background: rgba(6, 9, 18, 0.82);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 13px;
}

.overlay.hidden { display: none; }

.panel {
  max-width: 620px;
  width: 88%;
  background: linear-gradient(160deg, var(--panel), #161d2c);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 30px 32px;
  color: var(--text);
  text-align: center;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.03), 0 25px 60px rgba(0,0,0,0.5), 0 0 40px rgba(76,175,80,0.08);
  animation: pop-in 0.25s cubic-bezier(.2,.9,.3,1.2);
}

@keyframes pop-in {
  from { opacity: 0; transform: scale(0.92) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.panel h2 {
  margin: 0 0 10px;
  font-family: "Baloo 2", sans-serif;
  font-size: 26px;
  color: var(--accent);
  text-shadow: 0 2px 12px rgba(255, 209, 102, 0.35);
}

.panel p {
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
}

.panel button {
  margin-top: 14px;
  padding: 12px 26px;
  font-family: "Baloo 2", sans-serif;
  font-size: 16px;
  font-weight: 700;
  border: none;
  border-radius: 999px;
  background: linear-gradient(180deg, #5fc766, #3f9a45);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(76, 175, 80, 0.35), inset 0 1px 0 rgba(255,255,255,0.3);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.panel button:hover {
  transform: translateY(-2px);
  box-shadow: 0 9px 20px rgba(76, 175, 80, 0.45), inset 0 1px 0 rgba(255,255,255,0.3);
}

.panel button:active { transform: translateY(0); }

#fact-step {
  font-size: 12px;
  color: var(--text-dim);
  margin: -6px 0 0;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

#quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.quiz-option {
  padding: 12px 16px;
  background: rgba(255,255,255,0.04);
  border: 2px solid var(--panel-border);
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  font-size: 15px;
  transition: border-color 0.15s ease, transform 0.1s ease, background 0.15s ease;
}

.quiz-option:hover { border-color: var(--accent); transform: translateX(2px); background: rgba(255,255,255,0.07); }
.quiz-option.correct { background: rgba(76, 175, 80, 0.25); border-color: var(--accent2); }
.quiz-option.wrong { background: rgba(192, 57, 43, 0.25); border-color: #c0392b; }

#quiz-feedback {
  min-height: 20px;
  font-weight: 600;
  color: var(--accent);
  margin-top: 12px;
}

.hud-btn {
  font-family: "Baloo 2", sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  background: linear-gradient(180deg, rgba(255,255,255,0.1), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 999px;
  padding: 6px 12px;
  white-space: nowrap;
  cursor: pointer;
}

.hud-btn:hover { border-color: var(--accent); color: var(--accent); }

.volume-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 999px;
  padding: 6px 14px 6px 12px;
  font-size: 13px;
}

.volume-wrap input[type="range"] {
  width: 80px;
  accent-color: var(--accent2);
  cursor: pointer;
}

.field-label {
  display: block;
  text-align: left;
  font-size: 13px;
  color: var(--text-dim);
  margin: 12px 0 4px;
}

.field-input {
  width: 100%;
  padding: 10px 14px;
  font-family: "Fredoka", sans-serif;
  font-size: 15px;
  border-radius: 8px;
  border: 2px solid var(--panel-border);
  background: rgba(255,255,255,0.05);
  color: var(--text);
}

.field-input:focus { outline: none; border-color: var(--accent); }

.field-error {
  color: #e57373;
  font-size: 13px;
  min-height: 18px;
  margin: 6px 0 0;
}

#ranking-list {
  max-height: 320px;
  overflow-y: auto;
  text-align: left;
  margin-top: 10px;
}

.ranking-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  margin-bottom: 6px;
  background: rgba(255,255,255,0.04);
}

.ranking-row.me { background: rgba(76,175,80,0.18); border: 1px solid rgba(76,175,80,0.5); }

.ranking-rank {
  font-family: "Baloo 2", sans-serif;
  font-weight: 700;
  color: var(--accent);
  width: 28px;
  text-align: center;
}

.ranking-name { flex: 1; }
.ranking-course { color: var(--text-dim); font-size: 12px; }
.ranking-score { font-weight: 700; color: var(--accent2); }