:root {
  --bg: #fff8ec;
  --card: #ffffff;
  --primary: #ff8b3d;
  --primary-dark: #e36a16;
  --good: #2bb673;
  --bad: #e54848;
  --text: #2d2a26;
  --muted: #7a7770;
  --border: #f0e2c8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Comic Sans MS", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 18px;
  line-height: 1.5;
}

header {
  text-align: center;
  padding: 24px 16px 8px;
}
header h1 { margin: 0; font-size: 2rem; color: var(--primary-dark); }
.subtitle { margin: 4px 0 0; color: var(--muted); }

main {
  max-width: 820px;
  margin: 0 auto;
  padding: 16px;
}

footer {
  text-align: center;
  padding: 24px;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  border-radius: 14px;
  padding: 14px 22px;
  background: var(--primary);
  color: white;
  font-weight: bold;
  margin: 6px;
  transition: transform 0.05s, background 0.15s;
}
button:hover { background: var(--primary-dark); }
button:active { transform: scale(0.97); }
button.ghost {
  background: transparent;
  color: var(--muted);
  border: 2px solid var(--border);
}
button.ghost:hover { background: var(--border); color: var(--text); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 20px;
}
.card {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 8px 18px rgba(0,0,0,0.08); }
.card .icon { font-size: 3rem; }
.card h2 { margin: 8px 0 4px; font-size: 1.3rem; }
.card .progress { color: var(--muted); font-size: 0.9rem; }

.panel {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  margin-top: 16px;
}
.panel h2 { margin-top: 0; color: var(--primary-dark); }

.question {
  font-size: 1.2rem;
  margin-bottom: 16px;
}
.choices {
  display: grid;
  gap: 10px;
}
.choices button {
  background: white;
  color: var(--text);
  border: 2px solid var(--border);
  text-align: left;
  padding: 14px 18px;
}
.choices button:hover { background: #fff3df; border-color: var(--primary); }
.choices button.correct { background: #d9f4e6; border-color: var(--good); color: var(--good); }
.choices button.wrong { background: #fbdcdc; border-color: var(--bad); color: var(--bad); }
.choices button:disabled { cursor: default; }

.feedback { margin-top: 12px; font-weight: bold; }
.feedback.good { color: var(--good); }
.feedback.bad { color: var(--bad); }

.progress-bar {
  height: 10px;
  background: var(--border);
  border-radius: 5px;
  overflow: hidden;
  margin: 8px 0 16px;
}
.progress-bar > div {
  height: 100%;
  background: var(--primary);
  transition: width 0.3s;
}

.passage {
  background: #fffaf0;
  border-left: 6px solid var(--primary);
  padding: 14px 18px;
  border-radius: 8px;
  margin-bottom: 16px;
  white-space: pre-wrap;
}

input[type=text] {
  font: inherit;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 12px;
  width: 100%;
  max-width: 360px;
}
input[type=text]:focus { outline: none; border-color: var(--primary); }

.tag {
  display: inline-block;
  background: var(--border);
  color: var(--muted);
  border-radius: 12px;
  padding: 2px 10px;
  font-size: 0.8rem;
  margin-right: 4px;
}

.sort-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.sort-word {
  background: white;
  border: 2px solid var(--border);
  padding: 8px 14px;
  border-radius: 10px;
  cursor: grab;
  user-select: none;
}
.sort-word.placed { opacity: 0.5; cursor: default; }
.sort-bin {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 12px;
  min-height: 60px;
  margin-bottom: 10px;
}
.sort-bin h4 { margin: 0 0 8px; }

details { margin: 10px 0; }
details summary { cursor: pointer; font-weight: bold; padding: 8px 0; }