/* Shared styles for Year 9 Unit 2 interactives */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: #0f172a;
  font-family: 'DM Sans', sans-serif;
  color: #e2e8f0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.wrap {
  flex: 1;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 16px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.title { font-size: 17px; font-weight: 700; }
.subtitle { font-size: 12px; color: #94a3b8; }
.btn {
  background: #2563eb;
  color: white;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity .15s;
}
.btn:hover { opacity: .9; }
.btn-secondary { background: #475569; }
.btn-success { background: #16a34a; }
.btn-danger { background: #dc2626; }
.stage {
  flex: 1;
  min-height: 260px;
  background: rgba(30, 41, 59, 0.5);
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.15);
  padding: 16px;
}
.panel {
  background: rgba(15, 23, 42, 0.6);
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.12);
  padding: 14px;
}
.feedback {
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  min-height: 38px;
}
.feedback.correct { background: rgba(22, 163, 74, 0.15); color: #4ade80; }
.feedback.incorrect { background: rgba(220, 38, 38, 0.15); color: #f87171; }
.feedback.info { background: rgba(37, 99, 235, 0.15); color: #60a5fa; }
.slider-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
input[type="range"] {
  flex: 1;
  accent-color: #2563eb;
}
.card {
  background: rgba(30, 41, 59, 0.7);
  border: 1.5px solid rgba(148, 163, 184, 0.15);
  border-radius: 10px;
  padding: 12px;
  cursor: pointer;
  transition: all .15s;
}
.card:hover { border-color: #2563eb; }
.card.selected { border-color: #2563eb; background: rgba(37, 99, 235, 0.12); }
.dropzone {
  min-height: 80px;
  border: 2px dashed rgba(148, 163, 184, 0.25);
  border-radius: 10px;
  padding: 10px;
  transition: all .2s;
}
.dropzone.dragover { border-color: #2563eb; background: rgba(37, 99, 235, 0.08); }