/*
 * Small SEBook content-page components that used to live in page-local style
 * blocks. Keep dark and print behavior next to the component rules.
 */

.tutorials-index-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 18px;
}

.tutorial-card {
  border: 1px solid #6a737d;
  border-radius: 8px;
  padding: 18px 20px;
  background: #ffffff;
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

.tutorial-card:hover,
.tutorial-card:focus-within {
  border-color: #2774AE;
  box-shadow: 0 2px 8px rgba(39, 116, 174, 0.15);
}

.tutorial-card-title {
  margin: 0 0 10px;
  font-size: 1.35em;
  line-height: 1.3;
  color: #2774AE;
  -webkit-text-stroke: 0;
}

.tutorial-card-title a,
.tutorial-card-title a:visited {
  color: inherit;
  text-decoration: none;
}

.tutorial-card-title a:hover {
  text-decoration: underline;
}

.tutorial-card-title a:focus-visible {
  outline: 2px solid #2774AE;
  outline-offset: 2px;
  border-radius: 3px;
  text-decoration: underline;
}

.tutorial-card-desc {
  margin: 0;
  color: #24292f;
  line-height: 1.5;
}

.uml-reference-intro {
  color: #555;
  font-style: italic;
  margin-bottom: 1.5em;
}

.uml-lazy-placeholder {
  min-height: 60px;
  padding: 12px;
  color: currentColor;
  opacity: 0.85;
  font-size: 0.95em;
  border: 1px solid currentColor;
  border-radius: 4px;
  margin: 0.5em 0;
}

.deep-module-diagram-wrap {
  display: flex;
  justify-content: center;
  margin: 18px 0;
}

.deep-module-diagram {
  max-width: 820px;
  height: auto;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

.sebook-practice-hero-group {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin: 18px 0;
}

.sebook-practice-boxes {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sebook-practice-boxes > .quiz-outer-wrap,
.sebook-practice-boxes > .flashcards-outer-wrap {
  display: block;
  margin: 0;
}

.sebook-practice-hero-group > .sebook-practice-hero-side {
  width: clamp(220px, 18vw, 320px);
  flex: 0 0 auto;
  position: sticky;
  top: 80px;
}

html.dark-mode .tutorial-card {
  background: #1f2937;
  border-color: #9aa1a8;
}

html.dark-mode .tutorial-card:hover,
html.dark-mode .tutorial-card:focus-within {
  border-color: #8bb8e8;
  box-shadow: 0 2px 8px rgba(139, 184, 232, 0.2);
}

html.dark-mode .tutorial-card-title {
  color: #8bb8e8;
}

html.dark-mode .tutorial-card-title a:focus-visible {
  outline-color: #8bb8e8;
}

html.dark-mode .tutorial-card-desc {
  color: #f9fafb;
}

html.dark-mode .uml-reference-intro {
  color: #b0b8c4;
}

@media (max-width: 900px) {
  .sebook-practice-hero-group {
    flex-direction: column;
  }

  .sebook-practice-hero-group > .sebook-practice-hero-side {
    width: clamp(150px, 45vw, 220px);
    align-self: center;
    position: static;
    order: -1;
  }
}

@media print {
  .sebook-practice-hero-group {
    display: block !important;
  }

  .tutorial-card,
  .uml-lazy-placeholder {
    background: #fff !important;
    border-color: #767676 !important;
    color: #111 !important;
    box-shadow: none !important;
  }

  .tutorial-card-title,
  .tutorial-card-title a,
  .tutorial-card-title a:visited {
    color: #2774AE !important;
  }

  .tutorial-card-desc,
  .uml-reference-intro {
    color: #111 !important;
  }
}