/* ================================================================
   MICRO BOOK — Styles specific to the Microeconomia textbook
   ================================================================ */

/* Graph iframes — no scrollbars, smooth transitions */
.md-typeset iframe[src*="graficos"] {
  display: block;
  max-width: 100%;
  border: none;
  border-radius: 8px;
  transition: height 0.3s ease;
}

/* Admonitions: Demonstrações (proof) */
.md-typeset .admonition.proof,
.md-typeset details.proof {
  border-color: #7c4dff;
}
.md-typeset .proof > .admonition-title,
.md-typeset .proof > summary {
  background-color: rgba(124, 77, 255, 0.1);
  color: #7c4dff;
}

/* Admonitions: Definições */
.md-typeset .admonition.definition,
.md-typeset details.definition {
  border-color: #00897b;
}
.md-typeset .definition > .admonition-title,
.md-typeset .definition > summary {
  background-color: rgba(0, 137, 123, 0.1);
  color: #00897b;
}

/* Admonitions: Teoremas */
.md-typeset .admonition.theorem,
.md-typeset details.theorem {
  border-color: #1565c0;
}
.md-typeset .theorem > .admonition-title,
.md-typeset .theorem > summary {
  background-color: rgba(21, 101, 192, 0.1);
  color: #1565c0;
}

/* Equações em bloco (div.arithmatex) — fundo destacado */
.md-typeset div.arithmatex {
  overflow-x: auto;
  padding: 1rem;
  background: var(--md-code-bg-color);
  border-radius: 4px;
  margin: 1.5em 0;
}

/* Equações inline (span.arithmatex) — sempre transparente */
.md-typeset span.arithmatex {
  background: transparent !important;
  background-color: transparent !important;
  padding: 0 !important;
  border: none !important;
  box-shadow: none !important;
  overflow: visible !important;
  margin: 0 !important;
  display: inline !important;
}
.md-typeset span.arithmatex > *,
.md-typeset span.arithmatex mjx-container,
.md-typeset span.arithmatex mjx-container * {
  background: transparent !important;
  background-color: transparent !important;
  padding: 0 !important;
  border: none !important;
  box-shadow: none !important;
  width: auto !important;
}

/* MathJax inline containers */
.md-typeset mjx-container:not([display="true"]),
.md-typeset mjx-container:not([display="true"]) * {
  background: transparent !important;
  background-color: transparent !important;
  box-shadow: none !important;
  padding: 0 !important;
}

/* Box Brasil */
.md-typeset .admonition.example {
  border-left: 4px solid #009c3b;
}

/* Hub — Cards de navegação na página inicial */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}
.hub-card {
  display: block;
  padding: 1.2rem;
  border-radius: 8px;
  border-left: 4px solid #ccc;
  background: var(--md-code-bg-color, #f5f5f5);
  text-decoration: none !important;
  color: inherit !important;
  transition: box-shadow 0.2s, transform 0.15s;
}
.hub-card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  transform: translateY(-2px);
}
.hub-card__label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.7;
  margin-bottom: 0.2rem;
}
.hub-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.hub-card__desc {
  font-size: 0.82rem;
  line-height: 1.4;
  opacity: 0.85;
  margin-bottom: 0.5rem;
}
.hub-card__caps {
  font-size: 0.72rem;
  font-weight: 700;
  opacity: 0.6;
}
.hub-card--fund  { border-left-color: #1565c0; }
.hub-card--merc  { border-left-color: #00897b; }
.hub-card--poder { border-left-color: #C8102E; }
.hub-card--front { border-left-color: #7c4dff; }
.hub-card--fund  .hub-card__title { color: #1565c0; }
.hub-card--merc  .hub-card__title { color: #00897b; }
.hub-card--poder .hub-card__title { color: #C8102E; }
.hub-card--front .hub-card__title { color: #7c4dff; }

/* Reference links row */
.hub-ref-links {
  text-align: center;
  margin: 1rem 0;
}
.hub-ref-links .md-button {
  margin: 0.3rem;
}

/* Hero features list */
.hero-features ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}
.hero-features li {
  font-size: 0.88rem;
  opacity: 0.85;
}
.hero-features li::before {
  content: "—  ";
  color: #C8102E;
  font-weight: 700;
}

/* Section index pages — Part cards */
.section-overview {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  padding: 1rem 1.2rem;
  background: rgba(200, 16, 46, 0.04);
  border-radius: 6px;
  border-left: 3px solid #C8102E;
}
.part-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.2rem;
  margin: 1rem 0;
}
.part-card {
  padding: 1.2rem;
  background: var(--md-code-bg-color, #f5f5f5);
  border-radius: 8px;
  border: 1px solid rgba(0,0,0,0.06);
}
.part-card h3 {
  font-size: 1rem;
  color: #C8102E;
  margin-top: 0;
}
.part-card ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}
.part-card li {
  font-size: 0.88rem;
  margin-bottom: 0.3rem;
}

@media (max-width: 600px) {
  .hub-grid { grid-template-columns: 1fr; }
  .part-grid { grid-template-columns: 1fr; }
  .hero-features ul { flex-direction: column; gap: 0.3rem; }
}