:root {
  --groen: #1e8c46;
  --groen-donker: #146334;
  --oranje: #ff6c00;
  --geel: #ffcc29;
  --wit: #ffffff;
  --tekst: #1c2b22;
  --kaart-schaduw: 0 4px 14px rgba(0,0,0,0.15);
  font-size: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Verdana, Arial, "Segoe UI", sans-serif;
  color: var(--tekst);
  background: linear-gradient(160deg, var(--groen) 0%, var(--groen-donker) 100%);
  min-height: 100vh;
  line-height: 1.5;
}

#app {
  max-width: 720px;
  margin: 0 auto;
  min-height: 100vh;
  background: #f4fbf6;
  box-shadow: var(--kaart-schaduw);
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--groen-donker);
  color: var(--wit);
  padding: 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-title { font-size: 1.05rem; }
.topbar-punten { background: var(--geel); color: var(--tekst); padding: 4px 12px; border-radius: 20px; font-size: 0.95rem; }

.scherm { padding: 18px 18px 32px; flex: 1; }

.intro { text-align: center; color: #345; margin: 4px 0 18px; }

.niveau-balken { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.niveau-rij { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; }
.niveau-rij-label { width: 120px; flex-shrink: 0; }
.niveau-rij-balk { flex: 1; height: 10px; background: #dde9df; border-radius: 6px; overflow: hidden; }
.niveau-rij-vul { height: 100%; background: var(--oranje); border-radius: 6px; transition: width 0.4s; }
.niveau-rij-tekst { width: 90px; text-align: right; color: #567; }

.spelkaarten { display: flex; flex-direction: column; gap: 14px; margin-bottom: 24px; }
.spelkaart {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--wit);
  border: 2px solid #d9ecdd;
  border-radius: 16px;
  padding: 16px;
  cursor: pointer;
  text-align: left;
  box-shadow: var(--kaart-schaduw);
  transition: transform 0.15s, border-color 0.15s;
}
.spelkaart:hover, .spelkaart:focus { transform: translateY(-2px); border-color: var(--oranje); }
.spelkaart-icon { font-size: 2.2rem; }
.spelkaart-titel { display: block; font-size: 1.1rem; font-weight: bold; }
.spelkaart-sub { display: block; font-size: 0.85rem; color: #567; }
.spelkaart-titel, .spelkaart-sub { display: flex; flex-direction: column; }

.btn-album {
  width: 100%;
  background: var(--geel);
  border: none;
  border-radius: 14px;
  padding: 16px;
  font-size: 1.05rem;
  font-weight: bold;
  cursor: pointer;
  margin-bottom: 10px;
  box-shadow: var(--kaart-schaduw);
}
.btn-album:hover { filter: brightness(1.05); }

.btn-reset {
  width: 100%;
  background: none;
  border: none;
  color: #789;
  font-size: 0.8rem;
  padding: 8px;
  cursor: pointer;
  text-decoration: underline;
}

.btn-terug {
  background: none;
  border: none;
  color: var(--groen-donker);
  font-weight: bold;
  font-size: 0.95rem;
  cursor: pointer;
  margin-bottom: 12px;
  padding: 4px 0;
}

.niveau-badge {
  display: inline-block;
  background: var(--groen);
  color: var(--wit);
  font-size: 0.8rem;
  font-weight: bold;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}

.quiz-voortgang { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.quiz-voortgang-balk { flex: 1; height: 10px; background: #dde9df; border-radius: 6px; overflow: hidden; }
.quiz-voortgang-vul { height: 100%; width: 0%; background: var(--oranje); border-radius: 6px; transition: width 0.3s; }
.quiz-voortgang span { font-size: 0.8rem; color: #567; white-space: nowrap; }

.vraagkaart {
  background: var(--wit);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--kaart-schaduw);
  margin-bottom: 16px;
}

.quiz-zin { font-size: 1.15rem; font-weight: bold; margin: 0 0 16px; }

.quiz-opties { display: flex; flex-direction: column; gap: 10px; }
.optie-btn {
  background: #eef6f0;
  border: 2px solid #d9ecdd;
  border-radius: 12px;
  padding: 14px;
  font-size: 1.05rem;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.optie-btn:hover:not([disabled]) { background: #dff0e3; border-color: var(--groen); }
.optie-btn.goed { background: #c8f0d1; border-color: var(--groen); }
.optie-btn.fout { background: #fbd6d6; border-color: #d94b4b; }
.optie-btn[disabled] { cursor: default; }

.quiz-uitleg {
  margin-top: 14px;
  padding: 12px;
  background: #fff7e0;
  border-radius: 10px;
  font-size: 0.95rem;
  border: 1px solid #f0dca0;
}

.lees-tekst-kaart { }
.lees-tekst { font-size: 1.02rem; }

.samenvatting-kaart, #scherm-pakket, #scherm-album { text-align: center; }
.samenvatting-kaart {
  background: var(--wit);
  border-radius: 16px;
  padding: 28px 20px;
  box-shadow: var(--kaart-schaduw);
  margin-top: 30px;
}
.samenvatting-kaart p { font-size: 1.05rem; margin: 8px 0; }

.btn-groot {
  background: var(--oranje);
  color: var(--wit);
  border: none;
  border-radius: 14px;
  padding: 14px 30px;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  margin-top: 16px;
  box-shadow: var(--kaart-schaduw);
}
.btn-groot:hover { filter: brightness(1.08); }

.pakket-stickers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.pakket-sticker {
  aspect-ratio: 3/4;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  cursor: pointer;
  background: linear-gradient(135deg, var(--groen), var(--groen-donker));
  color: var(--wit);
  box-shadow: var(--kaart-schaduw);
  transform-style: preserve-3d;
  transition: transform 0.5s;
  user-select: none;
}
.pakket-sticker.omgedraaid {
  transform: rotateY(180deg);
}
.pakket-sticker-inhoud {
  transform: rotateY(180deg);
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px;
}
.pakket-sticker.omgedraaid .pakket-sticker-inhoud { display: flex; }
.pakket-sticker.omgedraaid .pakket-sticker-vraagteken { display: none; }
.pakket-sticker-naam { font-size: 0.65rem; font-weight: bold; text-align: center; }
.pakket-sticker-type { font-size: 0.6rem; opacity: 0.85; }
.pakket-sticker.dubbel { outline: 3px dashed var(--geel); }

.album-voortgang-balk { height: 12px; background: #dde9df; border-radius: 6px; overflow: hidden; margin: 10px 0 4px; }
.album-zoek {
  width: 100%;
  padding: 10px 14px;
  border-radius: 10px;
  border: 2px solid #d9ecdd;
  font-size: 1rem;
  margin: 10px 0 16px;
}

.album-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  text-align: left;
}
.album-team {
  background: var(--wit);
  border-radius: 14px;
  padding: 12px;
  box-shadow: var(--kaart-schaduw);
  border-top: 5px solid #ccc;
}
.album-team-naam { font-weight: bold; font-size: 0.9rem; margin-bottom: 8px; display: flex; gap: 6px; align-items: center; }
.album-team-stickers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.album-mini-sticker {
  aspect-ratio: 1;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: #eef6f0;
  border: 1px solid #d9ecdd;
  position: relative;
}
.album-mini-sticker.behaald { background: var(--geel); }
.album-mini-sticker .aantal {
  position: absolute;
  bottom: -2px;
  right: -2px;
  background: var(--groen-donker);
  color: white;
  font-size: 0.55rem;
  border-radius: 50%;
  width: 15px;
  height: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--groen-donker);
  color: var(--wit);
  padding: 12px 22px;
  border-radius: 30px;
  font-weight: bold;
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
  z-index: 100;
  animation: toast-in-out 2.8s ease forwards;
  text-align: center;
}
@keyframes toast-in-out {
  0% { opacity: 0; transform: translate(-50%, 20px); }
  10% { opacity: 1; transform: translate(-50%, 0); }
  85% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, -10px); }
}

@media (max-width: 480px) {
  :root { font-size: 16px; }
  .spelkaart-titel, .spelkaart-sub { display: block; }
}