/* ==========================================================================
   Programación Avanzada 2026 — Profe Macón
   Sistema de Componentes Comunes y Tipografía Oficial
   ========================================================================== */

@import url('fonts.css');

:root {
  /* Paleta Profe Macón */
  --pm-violet: #988db3;
  --pm-violet-deep: #756a96;
  --pm-teal: #00a99d;
  --pm-teal-hover: #008f85;
  --pm-ink: #171419;
  --pm-bg: #f4f2f5;
  --pm-white: #ffffff;
  --pm-line: #ddd7df;
  --pm-line-light: #ece8ef;
  --pm-card-bg: #ffffff;
  --pm-text-muted: #5e5762;
  --pm-text-light: #827b86;
  --pm-code-bg: #171419;
  --pm-code-fg: #f8f7fa;

  /* Sistema tipográfico oficial */
  --pm-font-title: 'Montserrat', Arial, sans-serif;
  --pm-font-body: 'Inter', -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  --pm-font-code: 'Fira Code', Consolas, 'Courier New', monospace;

  --pm-header-height-expanded: 76px;
  --pm-header-height-compact: 56px;
}

/* --------------------------------------------------------------------------
   1. Tipografía Oficial (Reglas base no invasivas)
   -------------------------------------------------------------------------- */
body {
  font-family: var(--pm-font-body);
}

h1, h2, h3,
.pm-title-font {
  font-family: var(--pm-font-title);
  letter-spacing: -0.02em;
}

/* Fira Code para bloques y elementos de código, con ligaduras desactivadas */
pre, code, kbd, samp {
  font-family: var(--pm-font-code);
  font-variant-ligatures: none;
}

/* --------------------------------------------------------------------------
   2. Encabezado Institucional Unificado (.pm-site-header)
   -------------------------------------------------------------------------- */
.pm-site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10000;
  background-color: #ffffff;
  border-bottom: 3px solid var(--pm-teal);
  box-shadow: 0 4px 18px rgba(23, 20, 25, 0.08);
  transition: padding 0.25s ease, box-shadow 0.25s ease;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.pm-site-header * {
  box-sizing: border-box;
}

.pm-site-header .pm-header-bar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: padding 0.25s ease;
}

.pm-site-header.is-compact .pm-header-bar {
  padding: 8px 20px;
}

.pm-site-header .pm-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  flex-shrink: 0;
}

.pm-site-header .pm-logo {
  height: 48px;
  max-height: 48px;
  width: auto;
  object-fit: contain;
  transition: height 0.25s ease;
  display: block;
}

.pm-site-header.is-compact .pm-logo {
  height: 36px;
  max-height: 36px;
}

.pm-site-header .pm-brand-text {
  display: flex;
  flex-direction: column;
}

.pm-site-header .pm-course-name {
  font-family: var(--pm-font-title);
  font-weight: 700;
  font-size: 17px;
  color: var(--pm-ink);
  line-height: 1.15;
}

.pm-site-header .pm-course-sub {
  font-size: 12px;
  font-weight: 600;
  color: var(--pm-violet-deep);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pm-site-header.is-compact .pm-course-sub {
  display: none;
}

/* Navegación institucional */
.pm-site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  position: static;
  top: auto;
  background: transparent;
  border: none;
  box-shadow: none;
}

.pm-site-nav .pm-nav-link {
  font-family: var(--pm-font-body);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--pm-ink);
  text-decoration: none;
  padding: 7px 12px;
  border-radius: 8px;
  transition: background-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.pm-site-nav .pm-nav-link:hover {
  background-color: var(--pm-bg);
  color: var(--pm-violet-deep);
}

.pm-site-nav .pm-nav-link.is-active {
  background-color: #f1edf7;
  color: var(--pm-violet-deep);
}

.pm-site-nav .pm-nav-project {
  background: linear-gradient(135deg, rgba(0, 169, 157, 0.12), rgba(152, 141, 179, 0.18));
  color: #0b6861;
  border: 1px solid rgba(0, 169, 157, 0.35);
  font-weight: 700;
}

.pm-site-nav .pm-nav-project:hover {
  background: var(--pm-teal);
  color: #ffffff;
  border-color: var(--pm-teal);
}

/* --------------------------------------------------------------------------
   3. Navegación entre Lecciones (.pm-lesson-nav)
   -------------------------------------------------------------------------- */
.pm-lesson-nav {
  margin: 48px auto 24px;
  max-width: 1100px;
  padding: 0 16px;
  box-sizing: border-box;
  position: static;
  top: auto;
  background: transparent;
  border: none;
  box-shadow: none;
}

.pm-lesson-nav-inner {
  background: #ffffff;
  border: 1px solid var(--pm-line);
  border-radius: 18px;
  padding: 16px 20px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.pm-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 12px;
  text-decoration: none;
  color: var(--pm-ink);
  background-color: #f8f6fa;
  border: 1px solid var(--pm-line);
  transition: all 0.15s ease;
  max-width: 320px;
}

.pm-nav-btn:hover {
  background-color: #f1edf7;
  border-color: var(--pm-violet);
  transform: translateY(-1px);
}

.pm-nav-arrow {
  font-size: 20px;
  font-weight: 800;
  color: var(--pm-teal);
  line-height: 1;
}

.pm-nav-meta {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.pm-nav-meta small {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--pm-violet-deep);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pm-nav-meta b {
  font-size: 14px;
  font-weight: 600;
  color: var(--pm-ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 240px;
}

.pm-lesson-nav-center {
  display: flex;
  align-items: center;
}

.pm-nav-unit-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background-color: #f1edf7;
  border: 1px solid var(--pm-violet);
  border-radius: 999px;
  text-decoration: none;
  color: var(--pm-ink);
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.pm-nav-unit-pill:hover {
  background-color: #e6dfef;
  transform: translateY(-1px);
}

.pm-unit-badge {
  font-family: var(--pm-font-title);
  font-size: 12px;
  font-weight: 700;
  background-color: var(--pm-violet-deep);
  color: #ffffff;
  padding: 3px 8px;
  border-radius: 999px;
  text-transform: uppercase;
}

.pm-unit-name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--pm-ink);
}

/* --------------------------------------------------------------------------
   4. Botón Copiar en Bloques de Código Reconocidos (.pm-copy-btn)
   -------------------------------------------------------------------------- */
.pm-has-copy-btn {
  position: relative !important;
}

.pm-copy-btn {
  position: absolute;
  top: 10px;
  right: 12px;
  z-index: 10;
  background: rgba(255, 255, 255, 0.14);
  color: #f8f7fa;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 7px;
  padding: 5px 11px;
  font-family: var(--pm-font-body);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  line-height: 1.3;
}

.pm-copy-btn:hover {
  background: var(--pm-teal);
  color: #ffffff;
  border-color: var(--pm-teal);
}

.pm-copy-btn.is-copied {
  background: #28a745;
  border-color: #28a745;
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   5. Pie de Página Institucional (.pm-course-footer)
   -------------------------------------------------------------------------- */
.pm-course-footer {
  background-color: #ffffff;
  border-top: 1px solid var(--pm-line);
  margin-top: 60px;
  padding: 36px 20px 48px;
  color: var(--pm-text-muted);
  font-size: 14.5px;
}

.pm-footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
}

.pm-footer-brand strong {
  font-family: var(--pm-font-title);
  color: var(--pm-ink);
  font-weight: 700;
  font-size: 16px;
}

.pm-footer-meta {
  color: var(--pm-text-light);
  font-size: 13.5px;
  max-width: 700px;
}

.pm-footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 6px;
}

.pm-footer-links a {
  color: var(--pm-violet-deep);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.pm-footer-links a:hover {
  color: var(--pm-teal);
  text-decoration: underline;
}

.pm-footer-links .pm-back-top {
  color: var(--pm-teal);
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   6. Aislamiento y Armonía Didáctica (Sin interferir con SCORM)
   -------------------------------------------------------------------------- */

/* Evitar que las barras de navegación internas de las lecciones se solapen bajo la cabecera fija */
.hero + nav,
header:not(.pm-site-header) + nav {
  top: 56px;
  z-index: 900;
}

/* Equilibrar el logotipo didáctico secundario sin eliminar contenidos */
.hero .brand .full,
.hero .brand-logo-full,
.topbar .logo-box img {
  max-height: 48px;
  max-width: 240px;
  width: auto;
  object-fit: contain;
}

.hero .brand {
  padding: 10px 18px;
  margin-bottom: 20px;
}

/* Contraste en portada oscura de ProductoVista */
.hero-inner h1,
.hero-inner h1 em {
  color: #ffffff;
}
.hero-inner h1 em {
  color: #c7bce0;
}
.hero-inner p {
  color: #e6ebff;
}

/* Ocultar elementos heredados obsoletos de navegación flotante */
#site-back,
.curso-regreso,
.lesson-head {
  display: none !important;
}

/* --------------------------------------------------------------------------
   7. Adaptabilidad Móvil (.pm-site-header)
   -------------------------------------------------------------------------- */
@media (max-width: 860px) {
  .pm-site-header .pm-header-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 8px 14px;
  }
  
  .pm-site-header.is-compact .pm-header-bar {
    padding: 6px 14px;
  }

  .pm-site-nav {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 6px;
    padding: 2px 2px 6px;
    scrollbar-width: none;
  }

  .pm-site-nav::-webkit-scrollbar {
    display: none;
  }

  .pm-site-nav .pm-nav-link {
    flex-shrink: 0;
    font-size: 13px;
    padding: 6px 12px;
    background: #f4f2f5;
    border: 1px solid var(--pm-line-light);
  }

  .pm-site-nav .pm-nav-link.is-active {
    background: var(--pm-violet-deep);
    color: #ffffff;
    border-color: var(--pm-violet-deep);
  }

  .pm-site-nav .pm-nav-project {
    background: #e6f6f4;
    color: var(--pm-teal);
    border-color: var(--pm-teal);
  }

  .pm-lesson-nav-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .pm-nav-btn {
    max-width: 100%;
    justify-content: space-between;
  }

  .pm-lesson-nav-center {
    justify-content: center;
  }
}

@media print {
  .pm-site-header,
  .pm-lesson-nav,
  .pm-course-footer,
  .pm-copy-btn {
    display: none !important;
  }
}