/* ==========================================================================
   base.css
   Minimal layout primitives replacing Bootstrap 4.4.1. Ships exactly what
   the site uses: reset, .container, grid (row + col-md-4/6, col-lg-6),
   navbar flex scaffolding, a handful of utilities. Visual styling lives in
   theme.css and components.css.

   Load order: base.css -> fonts.css -> theme.css -> components.css
   ========================================================================== */

/* ---------- Reset ---------- */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
}

h1, h2, h3, h4, h5, h6,
p, figure, ul, ol {
  margin: 0;
}

ul, ol {
  padding-left: 0;
}

img, svg {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

a {
  background-color: transparent;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

table {
  border-collapse: collapse;
}

/* ---------- Container ---------- */

.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 15px;
}

@media (min-width: 576px)  { .container { max-width: 540px;  } }
@media (min-width: 768px)  { .container { max-width: 720px;  } }
@media (min-width: 992px)  { .container { max-width: 960px;  } }
@media (min-width: 1200px) { .container { max-width: 1140px; } }

/* ---------- Grid ---------- */

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -15px;
}

.col-md-4,
.col-md-6,
.col-lg-6 {
  position: relative;
  width: 100%;
  padding: 0 15px;
}

@media (min-width: 768px) {
  .col-md-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
  .col-md-6 { flex: 0 0 50%;        max-width: 50%;        }
}

@media (min-width: 992px) {
  .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
}

/* ---------- Navbar scaffolding ----------
   Flex plumbing only. Visual styling of nav items, toggler icon, and the
   open/close transition lives in components.css under .site-header. */

.navbar {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: inline-block;
  padding-top: .3125rem;
  padding-bottom: .3125rem;
  margin-right: 1rem;
  font-size: 1.25rem;
  line-height: inherit;
  white-space: nowrap;
}

.navbar-nav {
  display: flex;
  flex-direction: column;
  padding-left: 0;
  margin-bottom: 0;
  list-style: none;
}

.navbar-toggler {
  padding: .25rem .75rem;
  font-size: 1.25rem;
  line-height: 1;
  background-color: transparent;
  border: 1px solid transparent;
  border-radius: .25rem;
}

.navbar-collapse {
  flex-basis: 100%;
  flex-grow: 1;
  align-items: center;
  display: none;
}

.navbar-collapse.show {
  display: block;
}

@media (min-width: 992px) {
  .navbar-expand-lg {
    flex-flow: row nowrap;
    justify-content: flex-start;
  }
  .navbar-expand-lg .navbar-nav {
    flex-direction: row;
  }
  .navbar-expand-lg .navbar-collapse {
    display: flex !important;
    flex-basis: auto;
  }
  .navbar-expand-lg .navbar-toggler {
    display: none;
  }
}

/* ---------- Utilities ---------- */

.mx-auto           { margin-right: auto !important; margin-left: auto !important; }
.mb-4              { margin-bottom: 1.5rem !important; }
.align-items-center { align-items: center !important; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}