/* Trout Truck -- plain, accessible, no build step. */

:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #14231c;
  --muted: #45564c;
  --link: #0b5d3b;
  --link-visited: #3a3a7a;
  --border: #c9d3cd;
  --header-bg: #eef5f0;
  --row-alt: #f4f8f5;
  --focus: #0b5d3b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101713;
    --fg: #eaf1ec;
    --muted: #b9c6bd;
    --link: #7fd9a8;
    --link-visited: #b7b7ff;
    --border: #33463c;
    --header-bg: #16211a;
    --row-alt: #141d17;
    --focus: #7fd9a8;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  /* The CDFW source URL appears as plain text and as link text in every
     footer. Without this it cannot break, and the page scrolls sideways on
     a 320px screen (SC 1.4.10). It only breaks where nothing else would. */
  overflow-wrap: anywhere;
}

.wrap {
  max-width: 62rem;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

a { color: var(--link); text-underline-offset: 0.15em; }
a:visited { color: var(--link-visited); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--bg);
  color: var(--fg);
  padding: 0.75rem 1rem;
  z-index: 10;
  border: 2px solid var(--focus);
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.site-header, .site-footer {
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
}
.site-footer { border-top: 1px solid var(--border); border-bottom: none; margin-top: 2rem; }
.site-header .wrap { display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem; align-items: baseline; justify-content: space-between; }
.site-name a { font-weight: 700; text-decoration: none; font-size: 1.1rem; }
.site-tagline { color: var(--muted); font-size: 0.9rem; }
nav a { margin-right: 1rem; }
.site-footer p { color: var(--muted); font-size: 0.9rem; }
/* The footer's analytics opt-out is a button, because it changes a setting
   rather than going anywhere, drawn like the links next to it. The padding
   keeps it a 24px target (WCAG 2.2 SC 2.5.8). */
.link-button {
  font: inherit;
  color: var(--link);
  background: none;
  border: none;
  padding: 0.25rem 0;
  min-height: 24px;
  text-decoration: underline;
  text-underline-offset: 0.15em;
  cursor: pointer;
}

h1 { font-size: 1.6rem; margin-top: 1.25rem; }
h2 { font-size: 1.2rem; margin-top: 2rem; border-top: 1px solid var(--border); padding-top: 1.25rem; }
.lede { font-size: 1.05rem; }
.muted { color: var(--muted); }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}
th, td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
}
thead th {
  border-bottom: 2px solid var(--fg);
  white-space: nowrap;
}
tbody tr:nth-child(even) { background: var(--row-alt); }

dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.35rem 1rem; }
dt { font-weight: 600; }
dd { margin: 0; }

ul.water-index {
  columns: 2 16rem;
  gap: 2rem;
  padding-left: 1.1rem;
}
ul.water-index li { break-inside: avoid; }

@media (max-width: 30rem) {
  ul.water-index { columns: 1; }
  /* Header labels such as "Attribution required" wrap on a narrow screen
     instead of making the table, and so the page, scroll sideways at 320px
     (SC 1.4.10). */
  thead th { white-space: normal; }
}

/* Breadcrumb trail (water and county pages). Each link keeps a 24px target
   (WCAG 2.2 SC 2.5.8). The separator is decorative: the second `content`
   gives it empty alt text where supported, so screen readers skip it. */
.breadcrumb ol {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.5rem;
}
.breadcrumb li { display: flex; align-items: center; }
.breadcrumb li + li::before {
  content: "\203A";
  content: "\203A" / "";
  color: var(--muted);
  margin-right: 0.5rem;
}
.breadcrumb a {
  display: inline-block;
  margin-right: 0;
  min-height: 24px;
  padding: 0.125rem 0;
}
.breadcrumb a[aria-current="page"] { color: var(--fg); text-decoration: none; }