/* ============================================================
   SPC — Nothing Design Override
   Loaded after Bootstrap 3 to restyle R Markdown tutorials
   ============================================================ */

:root {
  --bg:        #fff;
  --bg-alt:    #f2f2f2;
  --fg:        #111;
  --fg-muted:  #777;
  --fg-label:  #999;
  --border:    #e0e0e0;
  --accent:    #e1001a;
  --white:     #fff;
  --radius:    6px;
  --font-head: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-body: 'Space Grotesk', sans-serif;
  --ease:      cubic-bezier(.25,.1,.25,1);
}

/* --- Base --- */
html { font-size: 14px !important; }
body {
  font-family: var(--font-body) !important;
  background: var(--bg) !important;
  color: var(--fg) !important;
  line-height: 1.7 !important;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--fg); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--accent); }
::selection { background: var(--fg); color: var(--white); }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head) !important;
  font-weight: 700 !important;
  line-height: 1.15 !important;
  letter-spacing: -.02em !important;
  color: var(--fg) !important;
  margin-top: 2rem;
  margin-bottom: .5em;
}
h1, .title { font-size: clamp(2.2rem, 4vw, 3rem) !important; }
h2 { font-size: clamp(1.8rem, 3vw, 2.4rem) !important; }
h3 { font-size: clamp(1.4rem, 2vw, 1.8rem) !important; }
h4 { font-size: 1.35rem !important; }
h5 { font-size: 1.2rem !important; }
h6 { font-size: 1.1rem !important; }
p { font-size: 1.15rem; color: #333; line-height: 1.8; }

/* --- Code blocks --- */
code {
  font-family: var(--font-mono) !important;
  font-size: 1.05rem !important;
  background: var(--bg-alt) !important;
  padding: .15em .35em !important;
  border-radius: 3px !important;
  color: var(--fg) !important;
}
pre {
  background: var(--white) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius) !important;
  padding: 1rem 1.25rem !important;
  overflow-x: auto !important;
  font-size: 1.05rem !important;
  line-height: 1.6 !important;
  margin: 1rem 0 1.25rem !important;
}
pre code {
  background: transparent !important;
  padding: 0 !important;
  border-radius: 0 !important;
  font-size: inherit !important;
}
/* R source blocks — red left accent */
pre.r {
  border-left: 3px solid var(--accent) !important;
}
/* Console output — grey left accent */
pre:not([class]) {
  border-left: 3px solid var(--border) !important;
  background: var(--bg-alt) !important;
}

/* --- Syntax highlighting (override highlight.js default) --- */
.hljs { background: transparent !important; }
.hljs-keyword { color: var(--accent) !important; font-weight: 600 !important; }
.hljs-string { color: #0a7d5e !important; }
.hljs-number, .hljs-literal { color: #6f42c1 !important; }
.hljs-comment { color: var(--fg-label) !important; font-style: italic !important; }
.hljs-title { color: var(--fg) !important; font-weight: 600 !important; }
.hljs-built_in { color: #555 !important; }

/* --- Tables --- */
table {
  width: 100% !important;
  border-collapse: collapse !important;
  margin: 1.5rem 0 !important;
  font-size: 1.1rem !important;
}
th {
  font-family: var(--font-mono) !important;
  font-size: .9rem !important;
  font-weight: 500 !important;
  text-transform: uppercase !important;
  letter-spacing: .06em !important;
  color: var(--fg-label) !important;
  border-bottom: 2px solid var(--border) !important;
  padding: .6rem .75rem !important;
  text-align: left !important;
  background: transparent !important;
}
td {
  padding: .5rem .75rem !important;
  border-bottom: 1px solid var(--border) !important;
  color: #333 !important;
  background: transparent !important;
}
tr:hover td { background: var(--bg-alt) !important; }
/* Override Bootstrap .table classes */
.table > thead > tr > th,
.table > tbody > tr > td { border-top: none !important; }
.table-condensed > thead > tr > th,
.table-condensed > tbody > tr > td { padding: .4rem .6rem !important; }

/* --- Blockquotes --- */
blockquote {
  border-left: 3px solid var(--accent) !important;
  border-right: none !important;
  border-top: none !important;
  border-bottom: none !important;
  padding: .5rem 0 .5rem 1.25rem !important;
  margin: 1.25rem 0 !important;
  background: transparent !important;
  font-size: 1.1rem !important;
}
blockquote p { color: #333 !important; font-size: 1.15rem !important; }

/* --- Lists --- */
ul, ol { padding-left: 1.5rem; margin-bottom: 1.25em; }
li { font-size: 1.15rem; color: #333; line-height: 1.8; margin-bottom: .15rem; }

/* --- Figures --- */
.figure { margin: 2rem 0; text-align: center; }
.figure img { border-radius: var(--radius); }
.caption, p.caption {
  font-family: var(--font-mono) !important;
  font-size: .9rem !important;
  color: var(--fg-label) !important;
  margin-top: .75rem !important;
  line-height: 1.6 !important;
}
/* Plot output images */
.toc-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}
/* Leaflet exclusion */
.leaflet-container img { border: none !important; border-radius: 0 !important; }

/* --- Sidebar TOC (tocify override) --- */
.tocify {
  border: none !important;
  border-right: 1px solid var(--border) !important;
  border-radius: 0 !important;
  background: transparent !important;
  width: 100% !important;
  margin-left: 0 !important;
}
.tocify ul, .tocify li { line-height: 1.5 !important; }
.tocify .list-group-item {
  font-family: var(--font-mono) !important;
  font-size: .95rem !important;
  color: var(--fg-muted) !important;
  background: transparent !important;
  border: none !important;
  border-radius: 0 !important;
  padding: .35rem .75rem !important;
  letter-spacing: .02em !important;
  transition: all .15s var(--ease) !important;
}
.tocify .list-group-item:hover,
.tocify .list-group-item:focus {
  color: var(--fg) !important;
  background: var(--bg-alt) !important;
}
.tocify .list-group-item.active,
.tocify .list-group-item.active:hover,
.tocify .list-group-item.active:focus {
  color: var(--fg) !important;
  background: var(--bg-alt) !important;
  border-left: 2px solid var(--accent) !important;
  font-weight: 500 !important;
}
.tocify-subheader .tocify-item { font-size: .88rem !important; }
#TOC { margin-top: 70px; }

/* --- Navbar override --- */
.navbar.navbar-default {
  background: var(--white) !important;
  border: none !important;
  border-bottom: 1px solid var(--border) !important;
  box-shadow: none !important;
  min-height: 48px !important;
}
.navbar-default .navbar-brand {
  font-family: var(--font-head) !important;
  font-weight: 700 !important;
  font-size: 1.4rem !important;
  color: var(--fg) !important;
  letter-spacing: -.03em !important;
}
.navbar-default .navbar-brand:hover { color: var(--accent) !important; }
.navbar-default .navbar-nav > li > a {
  font-family: var(--font-mono) !important;
  font-size: 1rem !important;
  color: var(--fg-muted) !important;
  letter-spacing: .03em !important;
  transition: color .2s var(--ease) !important;
}
.navbar-default .navbar-nav > li > a:hover,
.navbar-default .navbar-nav > li > a:focus {
  color: var(--fg) !important;
  background: transparent !important;
}
.navbar-default .navbar-nav > .active > a,
.navbar-default .navbar-nav > .active > a:hover,
.navbar-default .navbar-nav > .active > a:focus {
  color: var(--fg) !important;
  background: var(--bg-alt) !important;
}
.navbar-default .navbar-toggle {
  border-color: var(--border) !important;
}
.navbar-default .navbar-toggle .icon-bar {
  background-color: var(--fg-muted) !important;
}
.navbar-default .navbar-collapse {
  border-color: var(--border) !important;
}
/* Dropdown menus */
.dropdown-menu {
  background: var(--white) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius) !important;
  box-shadow: 0 4px 12px rgba(0,0,0,.06) !important;
  padding: .35rem 0 !important;
}
.dropdown-menu > li > a {
  font-family: var(--font-mono) !important;
  font-size: 1rem !important;
  color: var(--fg-muted) !important;
  padding: .4rem 1rem !important;
  transition: all .15s var(--ease) !important;
}
.dropdown-menu > li > a:hover,
.dropdown-menu > li > a:focus {
  color: var(--fg) !important;
  background: var(--bg-alt) !important;
}
.dropdown-submenu > .dropdown-menu {
  border-radius: var(--radius) !important;
}
.caret { border-top-color: var(--fg-muted) !important; }
.navbar-default .navbar-nav > .open > a,
.navbar-default .navbar-nav > .open > a:hover {
  background: var(--bg-alt) !important;
  color: var(--fg) !important;
}

/* --- Code folding button --- */
.code-folding-btn,
.btn-default {
  font-family: var(--font-mono) !important;
  font-size: .68rem !important;
  color: var(--fg-label) !important;
  background: transparent !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius) !important;
  padding: .2rem .6rem !important;
  text-transform: uppercase !important;
  letter-spacing: .04em !important;
  box-shadow: none !important;
  transition: all .15s var(--ease) !important;
}
.code-folding-btn:hover,
.btn-default:hover {
  color: var(--fg) !important;
  border-color: var(--fg) !important;
  background: transparent !important;
}
#header .btn-group .dropdown-menu { min-width: 120px; }

/* --- Misc --- */
hr {
  border: none !important;
  border-top: 1px solid var(--border) !important;
  margin: 2.5rem 0 !important;
}
mark {
  background: rgba(225,0,26,.08) !important;
  color: var(--fg) !important;
  padding: .05em .2em !important;
  border-radius: 2px !important;
}
strong { font-weight: 600; color: var(--fg); }
.main-container { max-width: 1200px; }
.toc-content { padding-right: 2rem; }

/* --- Responsive --- */
@media (max-width: 768px) {
  #TOC { margin-top: 10px; }
  .toc-content { padding-right: 15px; }
}