/* Halvern LIMS, the practice copy for the Catalyst tutorial (CRUX-PRD-149, practice site FRs).
   Plain CSS, no build step, no web fonts, nothing loaded from anywhere else. Colors are tokens on :root,
   redefined for dark mode, so every page follows the reader's system setting. */
:root {
  --bg: #f4f7f8; --panel: #ffffff; --ink: #1d2a2f; --soft: #4f6369; --line: #d3dde0; --row: #e8eef0;
  --head: #0f4c5c; --head-ink: #ffffff; --nav: #0b3a47; --nav-ink: #d5e6ea; --nav-grp: #9cbcc5;
  --th: #e6f0f2; --th-ink: #2f4a52; --accent: #0f4c5c; --accent-ink: #ffffff;
  --ok: #17703f; --warn: #965a00; --bad: #a3321f; --sel: #fff6df;
  --mark: #e8a33d; --mark-ink: #2b1d05; --focus: #e8a33d;
  --sans: ui-sans-serif, -apple-system, "Segoe UI", system-ui, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12191b; --panel: #1b2427; --ink: #e8eff1; --soft: #a9bcc1; --line: #33454a; --row: #26343a;
    --head: #0c3f4c; --nav: #0a2e38; --nav-ink: #cfe2e7; --nav-grp: #8fb2bc;
    --th: #22333a; --th-ink: #cfe2e7; --accent: #5fb3c7; --accent-ink: #08222a;
    --ok: #5cc98a; --warn: #f0b04f; --bad: #f08a76; --sel: #3a3220;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #12191b; --panel: #1b2427; --ink: #e8eff1; --soft: #a9bcc1; --line: #33454a; --row: #26343a;
  --head: #0c3f4c; --nav: #0a2e38; --nav-ink: #cfe2e7; --nav-grp: #8fb2bc;
  --th: #22333a; --th-ink: #cfe2e7; --accent: #5fb3c7; --accent-ink: #08222a;
  --ok: #5cc98a; --warn: #f0b04f; --bad: #f08a76; --sel: #3a3220;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 14px/1.5 var(--sans); }
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--panel); color: var(--ink); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; top: 8px; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Header */
.lhead { background: var(--head); color: var(--head-ink); display: flex; flex-wrap: wrap; align-items: center;
  gap: 6px 14px; padding: 10px 16px; }
.logo { font-weight: 700; letter-spacing: .02em; font-size: 15px; color: var(--head-ink); text-decoration: none; }
.ver { opacity: .8; font-size: 12px; }
.practice { background: var(--mark); color: var(--mark-ink); font-weight: 700; font-size: 11.5px;
  border-radius: 4px; padding: 2px 7px; white-space: nowrap; }
.who { margin-left: auto; font-size: 12.5px; display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: center; }
.who a { color: var(--head-ink); }

/* Layout: sidebar on wide screens, a wrapping row of links on a phone */
.lbody { display: grid; grid-template-columns: 1fr; min-height: calc(100vh - 48px); }
@media (min-width: 900px) { .lbody { grid-template-columns: 196px minmax(0, 1fr); } }
.lnav { background: var(--nav); color: var(--nav-ink); padding: 8px 0; }
.lnav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 2px 0; }
@media (min-width: 900px) { .lnav ul { display: block; } }
.lnav li a { display: block; padding: 7px 14px; color: var(--nav-ink); text-decoration: none; font-size: 13px; }
.lnav li a:hover { background: rgba(255,255,255,.08); }
.lnav li a[aria-current="page"] { background: rgba(255,255,255,.14); color: #fff; font-weight: 600;
  box-shadow: inset 3px 0 0 var(--mark); }
.lnav .grp { display: none; }
@media (min-width: 900px) {
  .lnav .grp { display: block; font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase;
    color: var(--nav-grp); padding: 14px 16px 4px; }
}
.lmain { padding: 16px; display: grid; gap: 14px; align-content: start; min-width: 0; }
@media (min-width: 900px) { .lmain { padding: 18px 22px; } }
h1 { margin: 0; font-size: 19px; line-height: 1.3; }
h2 { margin: 0; font-size: 15px; }
p { margin: 0; }
.crumbs { font-size: 12px; color: var(--soft); }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px; }
.crumbs li + li::before { content: "\203A"; margin-right: 4px; }
.lede { color: var(--soft); max-width: 70ch; }

/* Panels, tables, fields */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px;
  display: grid; gap: 10px; min-width: 0; }
.filters { display: flex; gap: 6px; flex-wrap: wrap; }
.filters span { background: var(--panel); border: 1px solid var(--line); border-radius: 4px; padding: 3px 8px;
  font-size: 12px; color: var(--soft); }
.table-wrap { overflow-x: auto; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; }
table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
caption { text-align: left; padding: 10px 12px 4px; font-weight: 600; }
th { text-align: left; background: var(--th); color: var(--th-ink); font-weight: 600; padding: 7px 10px;
  border-bottom: 1px solid var(--line); font-size: 11.5px; white-space: nowrap; }
td { padding: 7px 10px; border-bottom: 1px solid var(--row); font-variant-numeric: tabular-nums; vertical-align: top; }
tr:last-child td { border-bottom: 0; }
tr.sel td { background: var(--sel); }
td.nw { white-space: nowrap; }
.detail { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px 16px; margin: 0; }
.detail div { min-width: 0; }
.detail dt { color: var(--soft); font-size: 11px; text-transform: uppercase; letter-spacing: .05em; }
.detail dd { margin: 0; overflow-wrap: anywhere; }
.st-review { color: var(--warn); font-weight: 600; }
.st-ok { color: var(--ok); font-weight: 600; }
.st-bad { color: var(--bad); font-weight: 600; }
.st-wait { color: var(--soft); font-weight: 600; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; }
.tile { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px; display: grid; gap: 2px; }
.tile .n { font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; }
.tile .k { color: var(--soft); font-size: 12.5px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.btn { display: inline-block; border-radius: 4px; padding: 7px 14px; font-weight: 600; font-size: 13px;
  background: var(--accent); color: var(--accent-ink); text-decoration: none; border: 1px solid var(--accent); }
.btn.sec { background: transparent; color: var(--accent); }
.btn.rej { background: transparent; color: var(--bad); border-color: var(--bad); }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px 16px; }
.fld { display: grid; gap: 4px; min-width: 0; }
.fld label, .fld .lbl { color: var(--soft); font-size: 12px; }
.fld input, .fld select, .fld textarea { font: inherit; color: var(--ink); background: var(--panel);
  border: 1px solid var(--line); border-radius: 4px; padding: 6px 8px; width: 100%; min-width: 0; }
.fld input[readonly] { background: var(--bg); }
.fld .val { padding: 6px 0; }
fieldset { border: 1px solid var(--line); border-radius: 4px; margin: 0; padding: 8px 10px; min-width: 0; }
legend { color: var(--soft); font-size: 12px; padding: 0 4px; }
.checks { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.checks label { color: var(--ink); font-size: 13px; display: inline-flex; gap: 6px; align-items: center; }
.sig { border-left: 4px solid var(--accent); }
.sig h2 { font-size: 15px; }
.note { color: var(--soft); font-size: 12.5px; }
.ok-banner { border-left: 4px solid var(--ok); }
.bad-banner { border-left: 4px solid var(--bad); }

/* Footer: the practice marker, again, in words */
.lfoot { padding: 10px 16px 18px; color: var(--soft); font-size: 12px; }

/* Entry page */
.entry { min-height: calc(100vh - 48px); display: grid; place-items: center; padding: 24px 16px; }
.entry .card { max-width: 440px; width: 100%; padding: 22px 22px; gap: 14px; }
.entry h1 { font-size: 22px; }