/* Liver risk scores — web version styles */
:root {
  --ink: #1f2937; --muted: #6b7280; --border: #e5e7eb; --surface: #f8fafc; --primary: #1d4ed8; --primary-soft: #eff6ff; --primary-line: #bfdbfe;
  --low: #15803d; --mid: #b45309; --high: #b91c1c; --radius: .7rem;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; color: var(--ink); background: #fff; font: 15.2px/1.5 Inter, "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif; }
h1, h2, h3 { line-height: 1.25; }
a { color: var(--primary); }
[hidden] { display: none !important; }
.m-0 { margin: 0 !important; }
.mt-3 { margin-top: 1rem !important; }

/* ---- top bar ---- */
.topbar { display: flex; align-items: center; flex-wrap: wrap; gap: .25rem 1.25rem; padding: .7rem 16px; border-bottom: 1px solid var(--border); }
.brand { font-weight: 700; font-size: 1.2rem; letter-spacing: -0.01em; }
.brand-sub { font-weight: 400; color: var(--muted); margin-left: .4rem; font-size: .85em; }
.topnav { display: flex; gap: .25rem; }
.topnav-link { border: 0; background: none; font: inherit; color: var(--muted); padding: .35rem .6rem; border-radius: .4rem; cursor: pointer; }
.topnav-link:hover { background: var(--surface); color: var(--ink); }
.topnav-link.is-active { color: var(--ink); font-weight: 600; box-shadow: inset 0 -2px 0 var(--ink); border-radius: 0; }
.nav-note { color: var(--muted); font-size: .85rem; margin-left: auto; }
.page { padding: 1rem 16px 2rem; max-width: 1700px; margin: 0 auto; }
.warning { background: #fef3c7; border: 1px solid #f59e0b; border-radius: var(--radius); margin: 1rem 16px; padding: .75rem 1rem; }

/* ---- two columns on desktop ---- */
.layout { display: grid; grid-template-columns: 380px minmax(0, 1fr); gap: 1.25rem; align-items: start; }
.inputs-col { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); padding: .9rem; min-width: 0; }
.main-col { min-width: 0; }

/* ---- inputs ---- */
.units { border: 0; padding: 0; margin: 0 0 .75rem; }
.units legend { font-weight: 600; font-size: .9rem; padding: 0; margin-bottom: .2rem; }
.radio { display: block; font-size: .9rem; margin-bottom: .15rem; }
.panel { border: 1px solid var(--border); border-radius: .5rem; background: #fff; margin-bottom: .55rem; }
.panel > summary { cursor: pointer; padding: .55rem .9rem; font-size: .92rem; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.panel > summary::-webkit-details-marker { display: none; }
.panel > summary::after { content: ""; width: .55rem; height: .55rem; border-right: 2px solid var(--ink); border-bottom: 2px solid var(--ink); transform: rotate(45deg); margin-right: .2rem; transition: transform .15s; }
.panel[open] > summary::after { transform: rotate(-135deg); }
.panel-body { padding: .3rem .9rem .5rem; border-top: 1px solid var(--border); }
.lrs-input { margin: .5rem 0 .55rem; }
.lrs-input label { display: block; font-size: .85rem; margin-bottom: .15rem; }
.lrs-input label.check { display: flex; align-items: flex-start; gap: .4rem; font-size: .88rem; }
.lrs-input label.check input { margin-top: .25rem; }
.lrs-input input[type=number], .lrs-input select { width: 100%; font: inherit; font-size: .9rem; padding: .3rem .5rem; border: 1px solid #cbd5e1; border-radius: .4rem; background: #fff; color: var(--ink); }
.lrs-input input[type=number]:focus, .lrs-input select:focus { outline: 2px solid var(--primary-line); border-color: var(--primary); }
.form-help { color: var(--muted); font-size: .8rem; margin: .2rem 0 .3rem; line-height: 1.35; }
.lrs-req { color: var(--muted); font-size: .74rem; line-height: 1.3; margin-top: .15rem; }
.lrs-req:empty { display: none; }

/* ---- tabs and panes ---- */
.tabs { display: flex; flex-wrap: wrap; gap: .15rem; border-bottom: 1px solid var(--border); margin-bottom: .9rem; }
.tab { border: 1px solid transparent; border-bottom: 0; background: none; font: inherit; font-weight: 600; color: var(--primary); padding: .5rem .8rem; border-radius: .5rem .5rem 0 0; cursor: pointer; margin-bottom: -1px; }
.tab:hover { background: var(--surface); }
.tab.is-active { color: var(--ink); background: #fff; border-color: var(--border); border-bottom: 1px solid #fff; }
.pane { display: none; }
.pane.is-active { display: block; }
.lrs-pane-title { display: none; }

/* ---- score selection ---- */
.score-select { border: 1px solid var(--border); border-radius: .6rem; padding: .6rem .9rem .4rem; margin: 0 0 1rem; background: var(--surface); }
.score-select-head { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-bottom: .3rem; }
.score-select-title { font-weight: 600; font-size: .9rem; }
.score-select .sep { color: var(--muted); }
.score-select .link { cursor: pointer; }
.score-options { display: flex; flex-wrap: wrap; gap: .15rem 1rem; }
.score-options label.check { display: inline-flex; align-items: center; gap: .35rem; font-size: .9rem; cursor: pointer; }

/* ---- cards ---- */
.score-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; align-items: start; }
@media (max-width: 1250px) { .score-grid { grid-template-columns: 1fr; } }
.score-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.1rem; background: #fff; min-width: 0; }
.score-card-missing { background: var(--surface); }
.score-head { display: flex; justify-content: space-between; align-items: center; gap: .75rem; flex-wrap: wrap; }
.score-name { font-weight: 700; font-size: 1.05rem; }
.chip { font-size: .78rem; padding: .15rem .55rem; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); background: var(--surface); white-space: nowrap; max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
.chip-low { color: var(--low); border-color: #bbf7d0; background: #f0fdf4; }
.chip-mid { color: var(--mid); border-color: #fde68a; background: #fffbeb; }
.chip-high { color: var(--high); border-color: #fecaca; background: #fef2f2; }
.score-value { font-size: 2.4rem; font-weight: 700; line-height: 1.1; margin: .35rem 0 .25rem; font-variant-numeric: tabular-nums; }
.score-card-missing .score-value { color: var(--muted); }
.score-extra { display: flex; gap: 1.25rem; flex-wrap: wrap; font-size: .88rem; margin-bottom: .25rem; }
.score-extra .k { color: var(--muted); margin-right: .35rem; }
.score-extra .v { font-weight: 600; font-variant-numeric: tabular-nums; }
.score-note { font-size: .85rem; color: var(--mid); margin: .25rem 0; }
.score-section { margin-top: .7rem; }
.score-label { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin-bottom: .2rem; }
.formula { font-size: .82rem; white-space: pre-wrap; overflow-wrap: anywhere; background: var(--surface); border: 1px solid var(--border); border-radius: .4rem; padding: .5rem .65rem; margin: 0 0 .35rem; font-variant-numeric: tabular-nums; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.score-small { font-size: .82rem; color: var(--ink); margin: .15rem 0 0; overflow-wrap: anywhere; }
ul.score-small { padding-left: 1.1rem; }
ul.score-small li { margin-bottom: .15rem; }
ul.caps { color: var(--muted); }
details.score-section summary { cursor: pointer; font-size: .82rem; color: var(--primary); }
table.components { font-size: .8rem; margin: .4rem 0 0; border-collapse: collapse; width: 100%; }
table.components td { padding: .2rem .4rem; border-top: 1px solid var(--border); vertical-align: top; }
table.components td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.score-ref { font-size: .8rem; color: var(--muted); border-top: 1px dashed var(--border); padding-top: .5rem; overflow-wrap: anywhere; }
.score-ref a { margin-left: .35rem; word-break: break-all; }
.score-ref .ref-extra { margin-top: .2rem; }
.score-notes { color: var(--muted); font-style: italic; }

/* ---- summary ---- */
.summary-table { font-size: .88rem; border-collapse: collapse; width: 100%; margin-bottom: 1rem; }
.summary-table th, .summary-table td { text-align: left; padding: .35rem .5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.summary-table th { border-bottom: 2px solid var(--border); font-weight: 600; }
.summary-table td.num { font-variant-numeric: tabular-nums; font-weight: 600; }
.summary-text-wrap { position: relative; }
.summary-text { font-size: .8rem; white-space: pre; overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: .4rem; padding: .75rem 1rem; margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
#copy-summary { position: absolute; top: .5rem; right: .5rem; }

/* ---- buttons ---- */
.btn { font: inherit; font-weight: 600; border-radius: .45rem; padding: .5rem 1rem; cursor: pointer; border: 1px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:disabled { opacity: .5; cursor: default; }
.btn-outline { background: #fff; color: var(--ink); border-color: #cbd5e1; }
.btn-sm { font-size: .8rem; padding: .25rem .6rem; font-weight: 500; }

/* ---- about ---- */
.about { max-width: 70rem; }
.about h2 { font-weight: 700; margin: .5rem 0 .75rem; }
.about p { line-height: 1.6; }
.disclaimer { color: #991b1b; font-size: .9rem; }

/* ---- fit on narrow screens (both layouts) ---- */
@media (max-width: 767.98px) { .brand-sub, .nav-note { display: none; } }

/* =====================================================================
   Layout modes. app.js sets data-lrs-mode="mobile" on <html> for phones
   (and windows narrower than 900px) and data-lrs-step="1|2|3" for the
   step flow: 1 choose scores, 2 enter details, 3 results.
   ===================================================================== */
.lrs-mobile-only { display: none; }
html[data-lrs-mode="mobile"] .lrs-desktop-only { display: none !important; }
html[data-lrs-mode="mobile"] .lrs-mobile-only { display: block; }
html[data-lrs-mode="mobile"] .lrs-pane-title { display: block; font-size: 1.15rem; font-weight: 700; margin: 0 0 .5rem; }
html[data-lrs-mode="mobile"] .page { padding-top: .5rem; }
html[data-lrs-mode="mobile"] .layout { display: block; }
html[data-lrs-mode="mobile"] .inputs-col { border: 0; background: transparent; padding: 0; }
html[data-lrs-mode="mobile"][data-lrs-step="1"] .inputs-col, html[data-lrs-mode="mobile"][data-lrs-step="3"] .inputs-col { display: none; }
html[data-lrs-mode="mobile"][data-lrs-step="2"] .main-col { display: none; }
html[data-lrs-mode="mobile"] .lrs-intro[data-lrs-show] { display: none; }
html[data-lrs-mode="mobile"][data-lrs-step="1"] .lrs-intro[data-lrs-show="1"] { display: block; }
html[data-lrs-mode="mobile"] .lrs-intro p { margin: 0 0 .75rem; line-height: 1.5; }

/* the group tabs become stacked sections with a heading each */
html[data-lrs-mode="mobile"] .tabs { display: none; }
html[data-lrs-mode="mobile"] .panes { display: flex; flex-direction: column; gap: 1rem; }
html[data-lrs-mode="mobile"] .pane { display: block; }
html[data-lrs-mode="mobile"][data-lrs-step="1"] .pane .score-grid, html[data-lrs-mode="mobile"][data-lrs-step="1"] .pane[data-group="Summary"] { display: none; }
html[data-lrs-mode="mobile"][data-lrs-step="3"] .score-select { display: none; }
html[data-lrs-mode="mobile"][data-lrs-step="3"] .pane.lrs-pane-empty { display: none; }
html[data-lrs-mode="mobile"][data-lrs-step="3"] .pane[data-group="Summary"] { order: -1; }
html[data-lrs-mode="mobile"][data-lrs-step="3"] .pane[data-group="Summary"] .lrs-pane-title { font-size: 1.3rem; }

/* tick boxes: one per line, bigger targets */
html[data-lrs-mode="mobile"] .score-select { margin: 0; padding: .75rem .9rem .5rem; }
html[data-lrs-mode="mobile"] .score-select-title { display: none; }
html[data-lrs-mode="mobile"] .score-options { flex-direction: column; gap: .15rem; }
html[data-lrs-mode="mobile"] .score-options label.check { min-height: 2rem; font-size: 1rem; }
html[data-lrs-mode="mobile"] .score-options input, html[data-lrs-mode="mobile"] .lrs-input label.check input { width: 1.25em; height: 1.25em; }

/* step bar (sticky) and Back / Next */
html[data-lrs-mode="mobile"] .lrs-steps { display: flex; gap: .35rem; position: sticky; top: 0; z-index: 20; background: #fff; padding: .5rem 0 .6rem; margin: 0 0 .5rem; border-bottom: 1px solid var(--border); }
.lrs-step { flex: 1 1 0; display: flex; align-items: center; justify-content: center; gap: .4rem; min-height: 2.7rem; border: 1px solid var(--border); background: #fff; color: var(--ink); border-radius: .5rem; padding: .4rem .3rem; font: inherit; font-size: .88rem; font-weight: 600; line-height: 1.2; cursor: pointer; }
.lrs-step .lrs-step-n { display: inline-flex; align-items: center; justify-content: center; width: 1.45rem; height: 1.45rem; border-radius: 50%; background: #fff; border: 1px solid var(--border); font-size: .78rem; }
.lrs-step.is-current { background: var(--primary); border-color: var(--primary); color: #fff; }
.lrs-step.is-current .lrs-step-n { background: #fff; color: var(--primary); border-color: #fff; }
.lrs-step.is-done { color: var(--primary); border-color: var(--primary-line); background: var(--primary-soft); }
.lrs-step.is-done .lrs-step-n { background: var(--primary); color: #fff; border-color: var(--primary); }
.lrs-step:disabled { opacity: .45; cursor: default; }
.lrs-step .lrs-step-c { font-size: .72rem; padding: .05rem .4rem; border-radius: 999px; background: rgba(255,255,255,.25); border: 1px solid rgba(255,255,255,.5); }
.lrs-step .lrs-step-c:empty { display: none; }
.lrs-step:not(.is-current) .lrs-step-c { background: var(--primary-soft); border-color: var(--primary-line); color: var(--primary); }
html[data-lrs-mode="mobile"] .lrs-nav { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1.25rem 0 .5rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.lrs-nav .lrs-nav-note { flex: 1 1 100%; order: -1; color: var(--muted); font-size: .9rem; }
.lrs-nav .lrs-nav-note:empty { display: none; }
.lrs-nav .lrs-nav-note.is-warn { color: var(--mid); }
.lrs-nav .btn { flex: 1 1 0; min-height: 2.9rem; }

/* inputs: 16px stops iOS zooming into a field */
html[data-lrs-mode="mobile"] .lrs-input input[type=number], html[data-lrs-mode="mobile"] .lrs-input select { font-size: 16px; padding: .45rem .6rem; }
html[data-lrs-mode="mobile"] .lrs-input label { font-size: .95rem; }
html[data-lrs-mode="mobile"] .panel > summary { font-size: 1rem; padding: .7rem .9rem; }
html[data-lrs-mode="mobile"] .units legend, html[data-lrs-mode="mobile"] .radio { font-size: 1rem; }

/* result cards on a phone */
html[data-lrs-mode="mobile"] .score-grid { grid-template-columns: 1fr; gap: .9rem; }
html[data-lrs-mode="mobile"] .score-card { padding: .9rem .95rem; }
html[data-lrs-mode="mobile"] .score-value { font-size: 2rem; }
html[data-lrs-mode="mobile"] .chip { white-space: normal; overflow: visible; text-overflow: clip; line-height: 1.3; padding: .2rem .6rem; }
html[data-lrs-mode="mobile"] table.components td.num { white-space: normal; }
html[data-lrs-mode="mobile"] .summary-table { font-size: .82rem; }
html[data-lrs-mode="mobile"] .summary-table th:first-child, html[data-lrs-mode="mobile"] .summary-table td:first-child { display: none; }
html[data-lrs-mode="mobile"] .summary-text { white-space: pre-wrap; overflow-wrap: anywhere; font-size: .75rem; padding-top: 2.2rem; }

/* ---- the + that opens a card's formula, interpretation and reference ---- */
.score-more { margin-top: .6rem; border-top: 1px solid var(--border); }
.score-more > summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: .55rem; padding: .55rem 0 .1rem; color: var(--primary); font-size: .85rem; user-select: none; }
.score-more > summary::-webkit-details-marker { display: none; }
.more-icon { position: relative; flex: none; width: 1.7rem; height: 1.7rem; border-radius: 50%; border: 1.5px solid var(--primary); }
.more-icon::before, .more-icon::after { content: ""; position: absolute; left: 50%; top: 50%; width: .7rem; height: 1.5px; background: var(--primary); transform: translate(-50%, -50%); transition: transform .15s; }
.more-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.score-more[open] > summary .more-icon { background: var(--primary-soft); }
.score-more[open] > summary .more-icon::after { transform: translate(-50%, -50%) rotate(0deg); }
.score-more > summary:hover .more-icon { background: var(--primary-soft); }
.score-more > summary:focus-visible { outline: 2px solid var(--primary-line); outline-offset: 2px; border-radius: .3rem; }
.score-more-body > .score-section:first-child { margin-top: .4rem; }

@media print {
  .topbar, .lrs-steps, .lrs-nav, .lrs-intro, .inputs-col, .tabs, .score-select, #copy-summary { display: none !important; }
  .layout { display: block; }
  .pane { display: block !important; }
  details.score-section { display: block; }
  details.score-section[open] summary { display: none; }
  .score-more > summary { display: none; }
}