/* ── NTP game ── */
.ntp-sentence {
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--fs-base);
    line-height: 1.6;
    padding: var(--sp-3) var(--sp-4);
    background: var(--surface2);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    margin: var(--sp-2) 0;
  }
  .ntp-blank {
    display: inline-block;
    min-width: 5rem;
    border-bottom: 2px dashed var(--orange);
    color: var(--orange);
    text-align: center;
    padding: 0 var(--sp-1);
    cursor: pointer;
    transition: all 0.3s;
  }
  .ntp-blank.show {
    border-bottom-color: var(--green);
    color: var(--green);
    font-weight: 600;
  }
  .ntp-concept-btn {
    display: inline-block;
    margin-left: var(--sp-2);
    padding: 0.125rem var(--sp-2);
    border-radius: var(--radius-sm);
    border: 1px dashed var(--purple);
    color: var(--purple);
    font-size: var(--fs-2xs);
    font-weight: 600;
    cursor: pointer;
    vertical-align: middle;
    transition: all 0.2s;
  }
  .ntp-concept-btn:hover { background: rgba(88,40,184,0.12); }
  .ntp-tag {
    display: inline-block;
    font-size: var(--fs-2xs);
    font-weight: 600;
    padding: 0.125rem var(--sp-2);
    border-radius: var(--radius-sm);
    margin-left: var(--sp-2);
    vertical-align: middle;
    opacity: 0;
    transform: translateY(0.2rem);
    transition: opacity 0.25s ease, transform 0.25s ease;
    pointer-events: none;
  }
.ntp-tag.show { opacity: 1; transform: translateY(0); }
.ntp-tag.fact  { background: rgba(0,104,128,0.12); color: var(--cyan); }
.ntp-tag.logic { background: rgba(158,74,0,0.12); color: var(--orange); }
.ntp-tag.code  { background: rgba(88,40,184,0.12); color: var(--purple); }
.ntp-tag.lang  { background: rgba(26,69,200,0.12); color: var(--accent); }
.ntp-tag.math  { background: rgba(140,108,0,0.12); color: var(--yellow); }

/* Projector-safe compaction for slide 16 */
#slide-16 h2 {
  margin-bottom: 0.7rem;
}

#slide-16 .small-text {
  line-height: 1.42;
}

#slide-16 .spacer-sm {
  height: 0.7rem;
}

#slide-16 #ntpGame {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.72rem !important;
  align-items: stretch;
}

#slide-16 .ntp-card {
  min-height: 0;
}

#slide-16 .ntp-sentence {
  margin: 0;
  padding: 0.68rem 0.9rem;
  font-size: 0.86rem;
  line-height: 1.38;
  display: block;
}

#slide-16 .ntp-card:not(.ntp-card-code) {
  min-height: 0;
}

#slide-16 .ntp-card-code {
  min-height: 0;
  align-items: center;
}

#slide-16 .ntp-card-code .ntp-main {
  display: block;
  line-height: 1.42;
}

#slide-16 .ntp-main {
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.12rem 0;
}

#slide-16 .ntp-blank {
  min-width: 3.7rem;
  white-space: nowrap;
}

#slide-16 .ntp-concept-btn,
#slide-16 .ntp-tag {
  margin-left: 0;
}

#slide-16 .ntp-concept-btn {
  font-size: 0.68rem;
  padding: 0.08rem 0.32rem;
}

#slide-16 .ntp-main mjx-container {
  display: inline-block;
  margin: 0 0.16rem;
}

#slide-16 .ntp-inline-math {
  white-space: nowrap;
}

#slide-16 .ntp-tag {
  max-width: 100%;
  display: inline-flex;
  align-items: center;
  padding: 0.14rem 0.46rem;
  border-radius: 999px;
}

#slide-16 .ntp-card-code .ntp-concept-btn,
#slide-16 .ntp-card-code .ntp-tag {
  margin-left: 0.32rem;
  vertical-align: baseline;
}