/* Handout - print-friendly */
body.handout {
  font-family: "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  background: #f5f5f4;
  color: #1c1917;
  margin: 0;
}
.handout-head {
  background: #fafaf9;
  border-bottom: 1px solid #e7e5e4;
  padding: 0.6rem 1rem;
  display: flex;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}
.handout-head a, .handout-head button {
  background: #ea6b1f;
  color: white;
  border: none;
  padding: 0.4rem 0.9rem;
  border-radius: 0.4rem;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
}
.handout-head a { background: #57534e; }

.handout-main {
  max-width: 800px;
  margin: 1.5rem auto;
  padding: 2rem 2.5rem;
  background: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.meta { margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 2px solid #ea6b1f; }
.meta .chapter-line { color: #b53d14; font-size: 0.85rem; font-weight: 600; }
.meta h1 { font-size: 2rem; margin: 0.3rem 0; }
.meta .title-en { color: #78716c; font-size: 0.95rem; }

.terms-box {
  background: #fef7ee;
  border: 1px solid #f6b377;
  border-radius: 0.4rem;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.terms-box h2 { margin: 0 0 0.5rem; font-size: 1.1rem; color: #b53d14; }
.terms-box table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.terms-box th, .terms-box td { border: 1px solid #fad3ac; padding: 0.4rem 0.6rem; text-align: left; }
.terms-box th { background: #fdebd6; }

.exercises h2, .quiz-handout h2 {
  margin-top: 2rem;
  border-bottom: 1px solid #e7e5e4;
  padding-bottom: 0.4rem;
}
.exercise {
  background: #fafaf9;
  border-left: 4px solid #ea6b1f;
  border-radius: 0 0.4rem 0.4rem 0;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}
.exercise h3 { margin: 0 0 0.5rem; font-size: 1.1rem; color: #b53d14; }
.starter { margin: 0.5rem 0; }
.starter .label { font-size: 0.8rem; color: #78716c; }

.quiz-list { padding-left: 1.4rem; }
.quiz-list .q { font-weight: 600; }
.quiz-list .opts { margin: 0.3rem 0 1rem 1.5rem; }
.quiz-list .opts li { margin: 0.15rem 0; }
.answers { background: #fef7ee; padding: 0.8rem 1rem; border-radius: 0.4rem; margin-top: 1rem; }

.handout-foot {
  text-align: center;
  font-size: 0.8rem;
  color: #78716c;
  padding: 1.5rem 0 2.5rem;
}

/* Print */
@media print {
  .no-print { display: none !important; }
  body.handout { background: white; }
  .handout-main {
    max-width: none;
    margin: 0;
    box-shadow: none;
    padding: 1rem 0;
  }
  .exercise { page-break-inside: avoid; }
  details { page-break-inside: avoid; }
  details > summary { cursor: default; }
  details:not([open]) > *:not(summary) { display: none; }
  details[open] > * { display: block; }
  pre { white-space: pre-wrap; word-wrap: break-word; page-break-inside: avoid; }
}