.tutorial-page {
  min-height: 100vh;
  padding: 1rem;
}

.tutorial-header {
  width: min(1180px, 100%);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin: 0 auto;
  padding: .75rem 1rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--gold);
  background: rgba(21, 16, 31, .94);
}

.tutorial-header p {
  margin: 0;
}

.tutorial-brand {
  color: var(--ivory);
  font: 1.2rem Georgia, serif;
}

.back-link {
  border: 1px solid #725d83;
  border-radius: 4px;
  padding: .55rem .75rem;
  color: #e8d8f7;
  text-decoration: none;
}

.back-link:hover {
  border-color: var(--gold);
  color: #fff5d9;
}

.tutorial-shell {
  width: min(1180px, 100%);
  margin: 1rem auto 0;
}

.tutorial-intro {
  margin-bottom: 1rem;
  text-align: center;
}

.tutorial-intro h1 {
  margin-bottom: .4rem;
  color: var(--ivory);
  font-size: clamp(2rem, 5vw, 3.4rem);
}

.tutorial-intro > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.tutorial-slide {
  min-height: 31rem;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(20rem, .95fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  padding: clamp(1.25rem, 4vw, 3rem);
  border: 1px solid var(--border);
  background:
    radial-gradient(circle at 82% 25%, rgba(142, 84, 199, .16), transparent 22rem),
    rgba(21, 16, 31, .96);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .34);
}

.tutorial-slide:focus {
  outline: 1px solid rgba(213, 173, 88, .45);
  outline-offset: 3px;
}

.slide-copy h2 {
  margin-bottom: .65rem;
  color: var(--ivory);
  font-size: clamp(1.9rem, 4vw, 3.2rem);
}

.slide-lead {
  max-width: 42rem;
  color: #d2c9d9;
  font-size: 1.05rem;
  line-height: 1.65;
}

.slide-stats {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin: 1.1rem 0;
}

.slide-stat {
  min-width: 5.5rem;
  margin: 0;
  padding: .55rem .7rem;
  border: 1px solid #4d3a60;
  background: #100b18;
}

.slide-stat dt {
  color: var(--muted);
  font-size: .65rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.slide-stat dd {
  margin: .18rem 0 0;
  color: var(--gold);
  font: 1.1rem Georgia, serif;
}

.slide-points {
  display: grid;
  gap: .65rem;
  padding-left: 1.2rem;
  color: #cfc4d7;
  line-height: 1.5;
}

.slide-points li::marker {
  color: var(--gold);
}

.slide-note {
  margin: 1.2rem 0 0;
  padding: .75rem .9rem;
  border-left: 3px solid var(--purple);
  background: rgba(142, 84, 199, .09);
  color: #e7d8f1;
  line-height: 1.5;
}

.lesson-figure {
  width: min(29rem, 100%);
  margin: 0 auto;
}

.lesson-board {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(5, minmax(0, 1fr));
  aspect-ratio: 1;
  border: 5px solid #281d31;
  outline: 1px solid #604b73;
  box-shadow: 0 18px 45px rgba(0, 0, 0, .4);
}

.lesson-cell {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  border: 0;
  background: var(--cell-light);
  color: var(--ivory);
  font: clamp(1.55rem, 5vw, 3.3rem)/1 Georgia, serif;
  text-shadow: 0 2px 5px #000;
}

.lesson-cell.dark {
  background: var(--cell-dark);
}

.lesson-cell.move {
  background: color-mix(in srgb, var(--move) 72%, var(--cell-dark));
  box-shadow: inset 0 0 0 2px #bbb5ff;
}

.lesson-cell.strong {
  background: color-mix(in srgb, var(--danger) 72%, var(--cell-dark));
  box-shadow: inset 0 0 0 2px #ff9a9f;
}

.lesson-cell.weak {
  background: color-mix(in srgb, #c77a38 72%, var(--cell-dark));
  box-shadow: inset 0 0 0 2px #ffc58e;
}

.lesson-cell.heal {
  background: color-mix(in srgb, var(--heal) 75%, var(--cell-dark));
  box-shadow: inset 0 0 0 2px #9cf0ca;
}

.lesson-cell.origin {
  z-index: 1;
  box-shadow: inset 0 0 0 4px var(--gold), inset 0 0 24px rgba(213, 173, 88, .4);
}

.lesson-figure figcaption {
  min-height: 3.2em;
  margin-top: .8rem;
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.5;
  text-align: center;
}

.tutorial-controls {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: .8rem;
  align-items: center;
  margin-top: 1rem;
}

.slide-dots {
  display: flex;
  justify-content: center;
  gap: .4rem;
}

.slide-dot {
  width: .72rem;
  min-width: 0;
  height: .72rem;
  padding: 0;
  border-radius: 50%;
  background: #352642;
}

.slide-dot.active {
  border-color: var(--gold);
  background: var(--gold);
}

.slide-counter {
  color: var(--muted);
  font: .78rem "Cascadia Mono", Consolas, monospace;
}

.diagram-legend {
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-top: 1rem;
  color: var(--muted);
  font-size: .78rem;
}

.diagram-legend span {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
}

.lesson-swatch {
  width: .8rem;
  height: .8rem;
  display: inline-block;
  border-radius: 2px;
}

.lesson-swatch.move { background: var(--move); }
.lesson-swatch.strong { background: var(--danger); }
.lesson-swatch.weak { background: #c77a38; }
.lesson-swatch.heal { background: var(--heal); }

@media (max-width: 800px) {
  .tutorial-slide {
    grid-template-columns: 1fr;
  }

  .lesson-figure {
    width: min(24rem, 100%);
  }
}

@media (max-width: 560px) {
  .tutorial-page {
    padding: .5rem;
  }

  .tutorial-header {
    align-items: flex-start;
  }

  .tutorial-slide {
    min-height: 0;
    padding: 1rem;
  }

  .tutorial-controls {
    grid-template-columns: 1fr auto 1fr;
  }

  .tutorial-controls > button {
    padding: .6rem .5rem;
  }

  .slide-dots {
    display: none;
  }

  .slide-counter {
    grid-column: 2;
    grid-row: 1;
  }

  #previousSlide {
    grid-column: 1;
  }

  #nextSlide {
    grid-column: 3;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
  }
}