/* ============================================
   QUARTO COURSE TEMPLATE - MAIN STYLES
   Modern, elegant design for educational content
   ============================================ */

/* ===================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   =================================== */

:root {
  /* Colors - Primary Palette */
  --color-primary: #2E3440;
  --color-secondary: #5E81AC;
  --color-accent: #88C0D0;
  
  /* Colors - Semantic */
  --color-success: #A3BE8C;
  --color-warning: #EBCB8B;
  --color-danger: #BF616A;
  --color-info: #81A1C1;
  
  /* Colors - Extended */
  --color-purple: #B48EAD;
  --color-orange: #D08770;
  --color-cyan: #8FBCBB;
  
  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  
  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;
  --leading-loose: 2;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   GLOBAL RESETS & BASE STYLES
   =================================== */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: var(--leading-relaxed);
  font-weight: 400;
}

/* ===================================
   TYPOGRAPHY
   =================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--leading-tight);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-lg);
  scroll-margin-top: 2rem;
}

h1 {
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 3px solid var(--color-accent);
}

h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-secondary);
  position: relative;
  padding-left: var(--space-md);
}

h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 70%;
  background: linear-gradient(180deg, var(--color-accent), var(--color-secondary));
  border-radius: var(--radius-full);
}

h3 {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-info);
}

h4 {
  font-size: var(--text-xl);
  font-weight: 600;
}

p {
  margin-bottom: var(--space-lg);
  max-width: 75ch;
}

/* Lead paragraph */
.lead {
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-primary);
  opacity: 0.9;
  line-height: var(--leading-relaxed);
}

/* Emphasis */
strong, b {
  font-weight: 600;
  color: var(--color-primary);
}

em, i {
  font-style: italic;
  color: var(--color-info);
}

/* ===================================
   LINKS
   =================================== */

a {
  color: var(--color-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-base);
  position: relative;
}

a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

a:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* External links icon */
a[href^="http"]::after {
  content: '\f35d';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.75em;
  margin-left: 0.25em;
  opacity: 0.5;
}

/* Suppress external link icon inside prompt code blocks */
pre.prompt a::after,
pre.prompt span::after,
div.sourceCode pre.prompt a::after,
div.sourceCode pre.prompt span::after {
  content: none !important;
}

/* ===================================
   CODE & SYNTAX
   =================================== */

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: rgba(94, 129, 172, 0.1);
  color: var(--color-danger);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-md);
  border: 1px solid rgba(94, 129, 172, 0.2);
  font-weight: 500;
}

pre {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  background-color: #f9fafb;
  border: 1px solid #e5e9f0;
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
  margin: var(--space-xl) 0;
}

pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
}

/* Code block with filename */
.code-with-filename {
  margin: var(--space-xl) 0;
}

.code-with-filename .code-with-filename-file {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  display: flex;
  align-items: center;
}

.code-with-filename .code-with-filename-file::before {
  content: '\f15b';
  font-family: 'Font Awesome 6 Free';
  font-weight: 400;
  margin-right: var(--space-sm);
}

/* Copy button enhancement */
.code-copy-button {
  background-color: var(--color-secondary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  opacity: 0.8;
}

.code-copy-button:hover {
  opacity: 1;
  background-color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ===================================
   LISTS
   =================================== */

ul, ol {
  margin: var(--space-lg) 0;
  padding-left: var(--space-xl);
}

li {
  margin-bottom: var(--space-sm);
  line-height: var(--leading-relaxed);
}

/* Custom styled lists */
ul.styled-list {
  list-style: none;
  padding-left: 0;
}

ul.styled-list li {
  position: relative;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

ul.styled-list li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-size: 1.1em;
}

/* Numbered list with custom counter */
ol.styled-list {
  list-style: none;
  counter-reset: styled-counter;
  padding-left: 0;
}

ol.styled-list li {
  position: relative;
  padding-left: var(--space-2xl);
  margin-bottom: var(--space-md);
  counter-increment: styled-counter;
}

ol.styled-list li::before {
  content: counter(styled-counter);
  position: absolute;
  left: 0;
  top: 0;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  color: white;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  box-shadow: var(--shadow-md);
}

/* ===================================
   BLOCKQUOTES
   =================================== */

blockquote {
  position: relative;
  margin: var(--space-2xl) 0;
  padding: var(--space-lg) var(--space-xl);
  padding-left: var(--space-2xl);
  border-left: 4px solid var(--color-accent);
  background: linear-gradient(135deg, rgba(94, 129, 172, 0.05), rgba(136, 192, 208, 0.05));
  border-radius: var(--radius-lg);
  font-style: italic;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

blockquote::before {
  content: '\f10d';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  top: var(--space-lg);
  left: var(--space-md);
  font-size: var(--text-2xl);
  color: var(--color-accent);
  opacity: 0.3;
}

blockquote p:last-child {
  margin-bottom: 0;
}

blockquote cite {
  display: block;
  text-align: right;
  margin-top: var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-info);
}

blockquote cite::before {
  content: '— ';
}

/* ===================================
   HORIZONTAL RULE
   =================================== */

hr {
  border: none;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  margin: var(--space-3xl) 0;
}

hr.thick {
  height: 4px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
  border-radius: var(--radius-full);
}

/* ===================================
   IMAGES & FIGURES
   =================================== */

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

img:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

figure {
  margin: var(--space-2xl) 0;
  text-align: center;
}

figcaption {
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(46, 52, 64, 0.15);

  font-family: var(--font-body);
  /* font-size: var(--text-xs); */
  font-size: 0.78rem;   /* ≈ entre text-xs y text-sm */
  line-height: 1.4;
  color: rgba(46, 52, 64, 0.8);

  font-style: normal;
  text-align: left;

  max-width: 70ch;
  margin-left: auto;
  margin-right: auto;
}

figcaption .quarto-figure-number {
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1em;   /* mantiene el tamaño pequeño */
}


/* ===================================
   TABLES
   =================================== */

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-2xl) 0;
  font-size: var(--text-sm);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

thead {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
}

th {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--text-xs);
}

td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid #e5e9f0;
}

tbody tr {
  transition: background-color var(--transition-fast);
}

tbody tr:hover {
  background-color: rgba(94, 129, 172, 0.05);
}

tbody tr:last-child td {
  border-bottom: none;
}

/* Alternating row colors */
tbody tr:nth-child(even) {
  background-color: rgba(0, 0, 0, 0.02);
}

/* ===================================
   NAVIGATION
   =================================== */

/* Navbar enhancements */
.navbar {
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-weight: 700;
  font-size: var(--text-lg);
}

/* Sidebar enhancements */
.sidebar {
  box-shadow: var(--shadow-md);
}

.sidebar-title {
  font-weight: 700;
  font-size: var(--text-lg);
  padding: var(--space-lg);
  border-bottom: 2px solid var(--color-accent);
}

.sidebar nav[role="doc-toc"] ul li a {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  display: block;
}

.sidebar nav[role="doc-toc"] ul li a:hover {
  background-color: rgba(94, 129, 172, 0.1);
  padding-left: var(--space-lg);
  border-left: 3px solid var(--color-accent);
}

.sidebar nav[role="doc-toc"] ul li a.active {
  background-color: rgba(94, 129, 172, 0.15);
  border-left: 3px solid var(--color-secondary);
  font-weight: 600;
}

/* ===================================
   BREADCRUMBS
   =================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  padding: var(--space-md) 0;
  font-size: var(--text-sm);
  color: var(--color-info);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: '\f054';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  margin: 0 var(--space-sm);
  font-size: 0.75em;
  opacity: 0.5;
}

/* ===================================
   FOOTER
   =================================== */

.page-footer {
  margin-top: var(--space-3xl);
  padding: var(--space-2xl) 0;
  border-top: 2px solid var(--color-accent);
  box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.05);
}

.footer-left,
.footer-center,
.footer-right {
  font-size: var(--text-sm);
}

/* ===================================
   BUTTONS & INTERACTIVE ELEMENTS
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  color: white;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
}

.btn-secondary {
  background-color: var(--color-info);
  color: white;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-secondary);
  color: var(--color-secondary);
}

.btn-outline:hover {
  background-color: var(--color-secondary);
  color: white;
}

/* ===================================
   BADGES & TAGS
   =================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background-color: var(--color-secondary);
  color: white;
}

.badge-success {
  background-color: var(--color-success);
  color: white;
}

.badge-warning {
  background-color: var(--color-warning);
  color: var(--color-primary);
}

.badge-danger {
  background-color: var(--color-danger);
  color: white;
}

.badge-info {
  background-color: var(--color-info);
  color: white;
}

/* ===================================
   UTILITY CLASSES
   =================================== */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-sm); }
.p-2 { padding: var(--space-md); }
.p-3 { padding: var(--space-lg); }
.p-4 { padding: var(--space-xl); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Animation utilities */
.fade-in {
  animation: fadeIn var(--transition-slow) ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.slide-up {
  animation: slideUp var(--transition-slow) ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {
  :root {
    --text-4xl: 2rem;
    --text-3xl: 1.5rem;
    --text-2xl: 1.25rem;
  }
  
  body {
    font-size: 1rem;
  }
  
  h1 {
    font-size: var(--text-3xl);
  }
  
  h2 {
    font-size: var(--text-2xl);
  }
  
  h3 {
    font-size: var(--text-xl);
  }
  
  table {
    font-size: var(--text-xs);
  }
  
  th, td {
    padding: var(--space-sm) var(--space-md);
  }
}

/* ===================================
   PRINT STYLES
   =================================== */

@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  a, a:visited {
    text-decoration: underline;
  }
  
  a[href]::after {
    content: " (" attr(href) ")";
  }
  
  pre, blockquote {
    border: 1px solid #999;
    page-break-inside: avoid;
  }
  
  thead {
    display: table-header-group;
  }
  
  tr, img {
    page-break-inside: avoid;
  }
  
  img {
    max-width: 100% !important;
  }
  
  h2, h3 {
    page-break-after: avoid;
  }
}

/* =========================
   PROMPT BLOCK (copiable) - limpio y consistente
   ========================= */

/* Wrapper de Quarto para code blocks (no recortes el botón copy) */
div.sourceCode {
  position: relative;
  overflow: visible !important;
}

/* Tarjeta de prompt */
pre.prompt {
  background: rgba(240, 240, 236, 0.65) !important;
  border-left: 6px solid #5e81ac !important;
  border-radius: 12px !important;
  margin: 0.75rem 0 1rem 0 !important;

  /* espacio: top para copy, left para la barra */
  padding: 1.8rem 1.1rem 1.1rem 1.1rem !important;
}

/* Quita estilos internos del tema en el code */
pre.prompt > code {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  outline: none !important;
  padding: 0 !important;
  border-radius: 0 !important;

  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  font-size: 1.05rem;
  line-height: 1.55;
  white-space: pre-wrap;
}

/* Botón copy siempre visible y encima */
div.sourceCode button.code-copy-button {
  opacity: 1 !important;
  visibility: visible !important;
  position: absolute !important;
  top: 0.6rem !important;
  right: 0.6rem !important;
  z-index: 9999 !important;
}

/* =======================================
   FIX FINAL: eliminar capa interna (sourceCode)
   ======================================= */

/* El wrapper de Quarto NO debe verse como caja */
div.sourceCode {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}

/* Asegura que solo TU tarjeta se vea */
div.sourceCode > pre.prompt {
  background: rgba(240, 240, 236, 0.65) !important;
  border-left: 4px solid #5e81ac !important;
  border-radius: 10px !important;
}

/* =======================================
   COPY BUTTON – discreto y pequeño
   ======================================= */

/* Botón copy: tamaño y color */
button.code-copy-button {
  background-color: rgba(120, 120, 120, 0.15) !important; /* gris bajito */
  color: #555 !important;                                 /* icono visible */
  border-radius: 8px !important;
  padding: 0.25rem 0.4rem !important;
  width: auto !important;
  height: auto !important;

  /* tamaño general */
  transform: scale(0.85);
}

/* Hover: solo un poquito más oscuro */
button.code-copy-button:hover {
  background-color: rgba(120, 120, 120, 0.25) !important;
  color: #333 !important;
}

/* Asegura que el icono (svg) herede el color */
button.code-copy-button svg,
button.code-copy-button i {
  color: inherit !important;
  fill: currentColor !important;
}

pre.prompt {
  border-radius: 10px !important;
}

button.code-copy-button:hover {
  background-color: rgba(120,120,120,0.3) !important;
}

button.code-copy-button {
  opacity: 0.35;
}
div.sourceCode:hover button.code-copy-button {
  opacity: 0.8;
}

div.sourceCode > pre.prompt {
  background: #ffffff !important;
  border-left: 3px solid rgba(0,0,0,0.22);
  border-radius: 6px !important;
  padding: 1.8rem 1.1rem 1.1rem 1.1rem !important;
}