/* ---------------------------------------------------------------------
   Design tokens
--------------------------------------------------------------------- */
:root {
  --jto-sidebar-width: 264px;
  --jto-content-max: 800px;
  --jto-header-height: 60px;
  --jto-radius: 6px;

  --c-bg: #ffffff;
  --c-sidebar-bg: #f6f8fa;
  --c-border: #e3e6ea;
  --c-text: #1b1f23;
  --c-text-muted: #57606a;
  --c-link: #1a56db;
  --c-link-hover: #133f9e;
  --c-code-bg: #f3f4f6;
  --c-active-bg: #e8edfb;
  --c-active-text: #1a56db;

  --c-note: #1a56db;
  --c-warning: #b45309;
  --c-important: #b91c1c;
  --c-new: #0f766e;
  --c-tip: #7c3aed;

  font-size: 16px;
}

html[data-theme="dark"] {
  --c-bg: #0d1117;
  --c-sidebar-bg: #11161d;
  --c-border: #262c34;
  --c-text: #e6edf3;
  --c-text-muted: #9aa4b2;
  --c-link: #6fa8ff;
  --c-link-hover: #a9c9ff;
  --c-code-bg: #161b22;
  --c-active-bg: #182238;
  --c-active-text: #6fa8ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.6;
}

a { color: var(--c-link); text-decoration: none; }
a:hover { color: var(--c-link-hover); text-decoration: underline; }

/* ---------------------------------------------------------------------
   Top header (site-wide search lives here, not in the sidebar)
--------------------------------------------------------------------- */
.page-header {
  height: var(--jto-header-height);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1.25rem;
  border-bottom: 1px solid var(--c-border);
  background: var(--c-bg);
  position: sticky;
  top: 0;
  z-index: 40;
}

/* ---------------------------------------------------------------------
   Layout
--------------------------------------------------------------------- */
.page-wrap { display: flex; min-height: 100vh; }

.side-bar {
  width: var(--jto-sidebar-width);
  flex-shrink: 0;
  background: var(--c-sidebar-bg);
  border-right: 1px solid var(--c-border);
  padding: 1.25rem 1rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.site-title {
  display: block;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--c-text);
  margin-bottom: 1rem;
}
.site-title:hover { text-decoration: none; color: var(--c-link); }

/* Everything to the right of the sidebar: the header sits above the
   content here, instead of spanning the full page width above the
   sidebar too. */
.content-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  min-width: 0;
  padding: 2rem 2.5rem 4rem;
}

.content { max-width: var(--jto-content-max); }

.page-title { margin-top: 0.25rem; font-size: 2rem; }

.breadcrumb { font-size: 0.85rem; color: var(--c-text-muted); margin-bottom: 0.5rem; }
.breadcrumb a { color: var(--c-text-muted); }
.crumb-sep { margin: 0 0.35em; }

.site-footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--c-border);
  color: var(--c-text-muted);
  font-size: 0.85rem;
}

/* ---------------------------------------------------------------------
   Sidebar navigation tree
--------------------------------------------------------------------- */
.nav-list, .nav-list-child { list-style: none; margin: 0; padding: 0; }
.nav-list-child { padding-left: 1rem; display: none; }
.nav-item.active-trail > .nav-list-child { display: block; }
.nav-item { position: relative; }

.nav-item > a {
  display: block;
  padding: 0.35rem 0.5rem 0.35rem 1.5rem;
  border-radius: var(--jto-radius);
  color: var(--c-text);
  font-size: 0.92rem;
}
.nav-item > a:hover { background: var(--c-active-bg); text-decoration: none; }
.nav-item.current > a {
  background: var(--c-active-bg);
  color: var(--c-active-text);
  font-weight: 600;
}

.nav-toggle {
  position: absolute;
  left: 0.15rem;
  top: 0.35rem;
  width: 1.1rem;
  height: 1.1rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle::before {
  content: "";
  display: block;
  margin: 0.3rem;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0.3rem 0 0.3rem 0.4rem;
  border-color: transparent transparent transparent var(--c-text-muted);
  transition: transform 0.15s ease;
}
.nav-item.active-trail > .nav-toggle::before { transform: rotate(90deg); }

.theme-toggle {
  margin-top: 1.25rem;
  width: 100%;
  padding: 0.4rem 0.6rem;
  font-size: 0.8rem;
  border-radius: var(--jto-radius);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text-muted);
  cursor: pointer;
}

/* ---------------------------------------------------------------------
   Search
--------------------------------------------------------------------- */
.page-header .search-box { position: relative; flex: 1; }
#jto-search-input {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--c-border);
  border-radius: var(--jto-radius);
  background: var(--c-sidebar-bg);
  color: var(--c-text);
  font-size: 0.9rem;
}
#jto-search-input:focus {
  outline: none;
  border-color: var(--c-link);
  background: var(--c-bg);
}
.search-results {
  position: absolute;
  z-index: 20;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 60vh;
  overflow-y: auto;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--jto-radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  display: none;
}
.search-results.open { display: block; }
.search-result {
  display: block;
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--c-border);
}
.search-result:last-child { border-bottom: none; }
.search-result:hover { background: var(--c-active-bg); text-decoration: none; }
.search-result .sr-title { font-weight: 600; color: var(--c-text); display: block; }
.search-result .sr-excerpt { font-size: 0.8rem; color: var(--c-text-muted); }
.search-empty { padding: 0.6rem 0.7rem; color: var(--c-text-muted); font-size: 0.85rem; }

/* ---------------------------------------------------------------------
   Callouts (from #+begin_note / #+begin_warning / etc.)
--------------------------------------------------------------------- */
.callout {
  border-left: 4px solid var(--c-note);
  background: var(--c-code-bg);
  padding: 0.75rem 1rem;
  border-radius: 0 var(--jto-radius) var(--jto-radius) 0;
  margin: 1.25rem 0;
}
.callout-title { margin: 0 0 0.35rem; font-weight: 700; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.02em; }
.callout p:last-child { margin-bottom: 0; }
.callout-note { border-color: var(--c-note); }
.callout-note .callout-title { color: var(--c-note); }
.callout-warning { border-color: var(--c-warning); }
.callout-warning .callout-title { color: var(--c-warning); }
.callout-important { border-color: var(--c-important); }
.callout-important .callout-title { color: var(--c-important); }
.callout-new { border-color: var(--c-new); }
.callout-new .callout-title { color: var(--c-new); }
.callout-tip { border-color: var(--c-tip); }
.callout-tip .callout-title { color: var(--c-tip); }

/* ---------------------------------------------------------------------
   Code
--------------------------------------------------------------------- */
code { background: var(--c-code-bg); border-radius: 3px; padding: 0.1em 0.35em; font-size: 0.88em; }
pre { background: var(--c-code-bg); border-radius: var(--jto-radius); padding: 1rem; overflow-x: auto; }
pre code { background: none; padding: 0; }
.org-src-container { position: relative; }
.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--jto-radius);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text-muted);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.org-src-container:hover .copy-btn { opacity: 1; }

table { border-collapse: collapse; width: 100%; margin: 1.25rem 0; }
th, td { border: 1px solid var(--c-border); padding: 0.5rem 0.7rem; text-align: left; }
th { background: var(--c-code-bg); }

/* ---------------------------------------------------------------------
   Mobile
--------------------------------------------------------------------- */
#jto-nav-toggle {
  display: none; /* shown only below the mobile breakpoint */
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--jto-radius);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 1.1rem;
  cursor: pointer;
}

@media (max-width: 800px) {
  #jto-nav-toggle { display: block; }
  .side-bar {
    position: fixed;
    left: 0; top: 0;
    height: 100vh;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    z-index: 50; /* above the sticky header, since it slides over it */
    box-shadow: 4px 0 16px rgba(0,0,0,0.15);
  }
  .side-bar.open { transform: translateX(0); }
  .main-content { padding: 1.5rem 1.25rem 3rem; }
}