/*
  UX Testbench admin styles.
  Type scale: 14, 16, 18, 24 (page title), 32 (sign-in only).
  Spacing scale: 4, 8, 12, 16, 24, 32, 48.
  Containers: page > panel > rows. Never a box inside a box.
  Accent (--brand): primary button, active tab, selection, progress, chart bars.
*/
:root {
  --brand: #151A23;
  --on-brand: #FFFFFF;
  --brand-soft: color-mix(in srgb, var(--brand) 8%, #fff);
  --brand-line: color-mix(in srgb, var(--brand) 30%, #fff);
  --brand-strong: color-mix(in srgb, var(--brand) 86%, #000);
  --ink: #151A23;
  --paper: #F5F6F8;
  --line: #E2E5EA;
  --line-strong: #CDD2DA;
  --muted: #566070;
}

html { background: var(--paper); overflow-x: clip; overscroll-behavior-x: none; }
/* Preloader */
#preloader { position: fixed; inset: 0; z-index: 9999; display: flex; align-items: center; justify-content: center; background: #F5F6F8; transition: opacity .25s ease, visibility .25s ease; }
#preloader.pl-out { opacity: 0; visibility: hidden; pointer-events: none; }
#preloader svg { color: #151A23; animation: pl-pulse 1.1s ease-in-out infinite; }
@keyframes pl-pulse { 0%, 100% { opacity: .35; transform: scale(.92); } 50% { opacity: 1; transform: scale(1); } }
@media (prefers-reduced-motion: reduce) { #preloader svg { animation: none; } }

body {
  background: var(--paper);
  overflow-x: clip;
  overscroll-behavior-x: none;
  color: var(--ink);
  font-family: "Hanken Grotesk", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Type */
.t-page { font-size: 24px; line-height: 1.3; font-weight: 700; letter-spacing: -0.01em; }
.t-panel { font-size: 18px; line-height: 1.4; font-weight: 600; }
.t-meta { font-size: 14px; line-height: 1.5; color: var(--muted); }
.t-strong { font-weight: 600; }

/* Layout */
.wrap { max-width: 1200px; margin: 0 auto; padding-left: 32px; padding-right: 32px; }
@media (max-width: 640px) { .wrap { padding-left: 16px; padding-right: 16px; } }
.main { padding-top: 32px; padding-bottom: 48px; }
.stack { display: flex; flex-direction: column; gap: 24px; }
.stack-2 { display: grid; gap: 24px; }
@media (min-width: 1024px) { .stack-2 { grid-template-columns: 1fr 1fr; } }

:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: #fff; padding: 8px 12px; border-radius: 6px; font-weight: 600; }
.skip:focus { left: 8px; }

/* Page head: one white band on every page */
.page-head { background: #fff; border-bottom: 1px solid var(--line); }
.page-head .wrap { padding-top: 24px; }
.page-head .head-end { padding-bottom: 24px; }

/* Panel: the only container */
.panel { background: #fff; border: 1px solid var(--line); border-radius: 8px; }
.panel-h { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 24px; border-bottom: 1px solid var(--line); min-height: 64px; }
.panel-h h2 { font-size: 18px; line-height: 1.4; font-weight: 600; margin: 0; }
.panel-h p { font-size: 14px; color: var(--muted); margin: 0; }
@media (max-width: 480px) { .panel-h { flex-wrap: wrap; height: auto; } }
@media (max-width: 640px) { #count { display: none; } }
.panel-h > .flex-1 { min-width: 0; }
.panel-b { padding: 24px; }
.panel-f { padding: 16px 24px; border-top: 1px solid var(--line); background: #FAFBFC; border-radius: 0 0 7px 7px; font-size: 14px; color: var(--muted); }
.well { background: var(--paper); border-radius: 8px; padding: 24px; }

/* Rows: checklist, needs-attention, options, table rows all share this */
.rows > * + * { border-top: 1px solid var(--line); }
.rows > :last-child { border-radius: 0 0 7px 7px; }
.row { display: flex; align-items: center; gap: 16px; padding: 16px 24px; }
.row-main { flex: 1; min-width: 0; }
.row-title { font-weight: 600; margin: 0; }
.row-state { width: 152px; flex: none; }
.row-act { width: 136px; flex: none; text-align: right; }
@media (max-width: 720px) {
  .row { flex-wrap: wrap; }
  .row-main { flex-basis: 100%; }
  .row-state, .row-act { width: auto; text-align: left; }
}

/* Buttons: two sizes only */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 16px; border-radius: 6px; border: 1px solid transparent;
  font-size: 16px; font-weight: 600; line-height: 1; white-space: nowrap; cursor: pointer;
  transition: background-color .12s, border-color .12s;
}
.btn-sm { height: 32px; padding: 0 12px; font-size: 14px; }
.btn-icon { width: 32px; padding: 0; }
.btn-primary { background: var(--brand); color: var(--on-brand); }
.btn-primary:hover { background: var(--brand-strong); }
.btn-secondary { background: #fff; color: var(--ink); border-color: var(--line-strong); }
.btn-secondary:hover { background: var(--paper); }
.btn-danger-solid { background: #B42318; color: #fff; }
.btn-danger-solid:hover { background: #912018; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .5; cursor: not-allowed; }
.link { color: var(--brand); font-weight: 600; text-underline-offset: 3px; }
.link:hover { text-decoration: underline; }

/* Forms */
.field + .field { margin-top: 24px; }
.label { display: block; font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.help { color: var(--muted); font-size: 14px; margin-top: 8px; }
.input {
  width: 100%; height: 40px; padding: 0 12px; background: #fff; color: var(--ink); font-size: 16px;
  border: 1px solid var(--line-strong); border-radius: 6px;
}
.input:focus { outline: 2px solid var(--brand); outline-offset: 0; border-color: var(--brand); }
.input::placeholder { color: #737C8B; }
.input[aria-invalid="true"] { border-color: #B42318; }
select.input { padding-right: 32px; }

/* Option: a row with a real radio. Same component for templates, identity and access. */
.opt { position: relative; display: grid; grid-template-columns: 20px minmax(0, 1fr) auto; gap: 16px; align-items: start; padding: 16px 24px; cursor: pointer; }
.opt input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.opt .radio { width: 20px; height: 20px; margin-top: 2px; border: 2px solid #8E97A6; border-radius: 50%; background: #fff; display: grid; place-items: center; }
.opt .radio::after { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--brand); transform: scale(0); transition: transform .1s; }
.opt input:checked ~ .radio { border-color: var(--brand); }
.opt input:checked ~ .radio::after { transform: scale(1); }
.opt:has(input:checked) { background: var(--brand-soft); }
.opt:hover { background: #FAFBFC; }
.opt:has(input:checked):hover { background: var(--brand-soft); }
.opt input:focus-visible ~ .radio { outline: 2px solid var(--brand); outline-offset: 2px; }
.opt .opt-title { display: block; font-weight: 600; }
.opt .opt-desc { display: block; font-size: 14px; color: var(--muted); }
.opt .opt-meta { font-size: 14px; color: var(--muted); white-space: nowrap; }
.opt-group { padding: 12px 24px; background: #FAFBFC; font-size: 14px; font-weight: 600; color: var(--muted); }

/* State pills: icon plus text, one vocabulary everywhere */
.st { display: inline-flex; align-items: center; gap: 8px; height: 28px; padding: 0 12px; border-radius: 999px; font-size: 14px; font-weight: 600; white-space: nowrap; }
.st i { font-size: 12px; }
.st-live, .st-ok { background: #E8F5EC; color: #166534; }
.st-draft, .st-closed, .st-info { background: #EAEDF1; color: #363F4E; }
.st-warn { background: #FEF3C7; color: #92400E; }
.st-fail { background: #FDECEA; color: #B42318; }

/* Segmented control */
.seg { display: inline-flex; max-width: 100%; overflow-x: auto; overscroll-behavior-x: contain; border: 1px solid var(--line-strong); border-radius: 6px; background: #fff; }
.overflow-x-auto { overscroll-behavior-x: contain; }
.seg button { padding: 0 16px; height: 38px; font-size: 14px; font-weight: 600; color: var(--muted); white-space: nowrap; flex: none; }
.seg button + button { border-left: 1px solid var(--line-strong); }
.seg button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.seg button:first-child { border-radius: 5px 0 0 5px; }
.seg button:last-child { border-radius: 0 5px 5px 0; }

/* Top navigation */
.topnav { padding: 8px 12px; border-radius: 6px; color: rgba(255,255,255,.78); font-size: 16px; font-weight: 500; }
.topnav:hover { background: rgba(255,255,255,.1); color: #fff; }
.topnav[aria-current="page"] { background: rgba(255,255,255,.14); color: #fff; }
.topbar :focus-visible { outline-color: #fff; }
@media (max-width: 640px) {
  .topbar .wrap { flex-wrap: wrap; height: auto; min-height: 56px; padding-top: 14px !important; padding-bottom: 14px; row-gap: 10px; column-gap: 12px; }
  .topbar nav[aria-label="Workspace"] { order: 3; width: 100%; overflow-x: auto; flex-wrap: nowrap; margin: 0 -16px; padding: 0 16px; }
  .topbar .ml-auto { order: 2; }
  .topbar a.font-bold span { display: none; }
}

/* Tabs, in the page head */
.tabs { display: flex; flex-wrap: wrap; gap: 8px 32px; margin-top: 24px; }
.tab { display: inline-block; padding: 12px 0; margin-bottom: -1px; border-bottom: 3px solid transparent; color: var(--muted); font-weight: 600; }
.tab:hover { color: var(--ink); }
.tab[aria-current="page"] { color: var(--ink); border-color: var(--brand); }

/* Status control in the study header */
.st-btn { display: inline-flex; align-items: center; gap: 8px; padding: 0 12px 0 0; border: 1px solid var(--line-strong); border-radius: 999px; background: #fff; cursor: pointer; }
.st-btn:hover { background: var(--paper); }
.st-btn .st { height: 28px; }

/* Wizard stepper: lines that join steps (uniform connectedness), in the page head */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; list-style: none; margin: 24px 0 0; padding: 0; }
.steps li { border-top: 4px solid var(--line-strong); padding: 12px 0 16px; }
.steps li.done, .steps li.now { border-top-color: var(--brand); }
.steps button { display: block; text-align: left; font: inherit; color: var(--muted); font-weight: 600; }
.steps li.done button, .steps li.now button { color: var(--ink); }
.steps button:disabled { cursor: default; }
.steps .n { display: block; font-size: 14px; font-weight: 400; color: var(--muted); }

/* Phase rail: the study lifecycle, joined by a line */
.rail { display: grid; grid-template-columns: repeat(6, minmax(128px, 1fr)); list-style: none; margin: 0; padding: 0; overflow-x: auto; overscroll-behavior-x: contain; }
@media (max-width: 640px) { .rail { grid-template-columns: repeat(6, minmax(0, 1fr)); overflow-x: visible; gap: 4px; } .rail .name { font-size: 13px; } }
.rail li { position: relative; padding: 36px 16px 4px 0; }
.rail li::before { content: ""; position: absolute; top: 11px; left: 32px; right: 8px; height: 3px; border-radius: 2px; background: var(--line-strong); }
.rail li:last-child::before { display: none; }
.rail .dot { position: absolute; top: 0; left: 0; width: 26px; height: 26px; border-radius: 999px; border: 3px solid var(--line-strong); background: #fff; display: grid; place-items: center; font-size: 12px; color: var(--on-brand); }
.rail .name { display: block; font-weight: 600; color: var(--muted); }
.rail .note { display: block; font-size: 14px; color: var(--muted); }
.rail li.done::before { background: var(--brand); transform-origin: left; animation: grow .55s ease-out both; animation-delay: calc(var(--i) * 90ms); }
.rail li.done .dot { background: var(--brand); border-color: var(--brand); }
.rail li.done .name, .rail li.now .name { color: var(--ink); }
.rail li.now .dot { border-color: var(--brand); background: var(--brand); box-shadow: inset 0 0 0 4px #fff; }
@keyframes grow { from { transform: scaleX(0); } }
@media (prefers-reduced-motion: reduce) { .rail li.done::before { animation: none; } }

/* Tables: cell text aligns with the panel edge */
.tbl { width: 100%; border-collapse: collapse; }
.tbl th { text-align: left; font-size: 14px; font-weight: 600; color: var(--muted); padding: 12px; border-bottom: 1px solid var(--line); background: #FAFBFC; white-space: nowrap; }
.tbl td { padding: 16px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl th:first-child, .tbl td:first-child { padding-left: 24px; }
.tbl th:last-child, .tbl td:last-child { padding-right: 24px; }
.tbl th.text-right { text-align: right; }
.tbl .la { padding-left: 32px; }
.tbl tbody tr:last-child td { border-bottom: 0; }
.tbl tbody tr:hover { background: #FAFBFC; }
.num { font-variant-numeric: tabular-nums; }

/* Dialogs and menus */
dialog { border: 0; border-radius: 12px; padding: 0; max-width: 520px; width: calc(100% - 32px); box-shadow: 0 24px 60px rgba(21,26,35,.28); color: var(--ink); }
dialog::backdrop { background: rgba(21,26,35,.5); }
.menu { border: 1px solid var(--line); border-radius: 8px; background: #fff; padding: 4px; box-shadow: 0 8px 24px rgba(21,26,35,.14); }
.menu a, .menu button.mi { display: block; width: 100%; text-align: left; padding: 8px 12px; border-radius: 6px; }
.menu a:hover, .menu button.mi:hover { background: var(--paper); }

/* Status menu: pill above its description, so widths never leave a gap */
.menu button.mi.mi-status { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; padding: 12px; }
.menu button.mi.mi-status + .mi-status { margin-top: 4px; }
.menu button.mi[aria-current="true"] { background: var(--paper); }

/* Second-level navigation inside an area (Build, Results) */
.side { padding: 8px; }
.side a { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 12px; border-radius: 6px; font-weight: 500; color: var(--muted); }
.side a:hover { background: var(--paper); color: var(--ink); }
.side a[aria-current="page"] { background: var(--brand-soft); color: var(--ink); font-weight: 600; }
.side .count { font-size: 14px; font-weight: 400; color: var(--muted); }
.side .grp { padding: 12px 12px 4px; font-size: 14px; font-weight: 600; color: var(--muted); }
.side hr { margin: 8px 0; border: 0; border-top: 1px solid var(--line); }

/* Results module summary grid and tables */
.res-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) 112px minmax(0, 2fr) 120px; gap: 16px; align-items: center; padding: 16px 24px; }
@media (max-width: 960px) { .res-grid { grid-template-columns: minmax(0, 1fr); gap: 8px; } .res-head { display: none; } }
.verdict-note { font-size: 14px; color: var(--muted); }
.tbl tbody.task-g th { font-size: 16px; color: var(--ink); background: #fff; border-bottom: 0; padding-top: 16px; }
.tbl tbody.task-g + tbody.task-g th { border-top: 1px solid var(--line); }
.sub-r td { padding-top: 8px; padding-bottom: 8px; border-bottom: 0; }
.tbl td.num, .tbl th.text-right { white-space: nowrap; }
.tbl tfoot td { border-top: 1px solid var(--line); background: #FAFBFC; font-weight: 600; }

/* Ordered module list: aligned columns, drag to reorder */
.mod-grid { display: grid; grid-template-columns: 20px 24px minmax(0, 1fr) 128px 128px 104px; gap: 16px; align-items: center; padding: 16px 24px; }
.mod-head { padding-top: 12px; padding-bottom: 12px; background: #FAFBFC; border-bottom: 1px solid var(--line); font-size: 14px; font-weight: 600; color: var(--muted); }
.mod-row:hover { background: #FAFBFC; }
.mod-row.dragging { opacity: .4; }
.mod-row.over { box-shadow: inset 0 3px 0 var(--brand); }
.drag { cursor: grab; color: #8E97A6; text-align: center; }
.mod-act { display: flex; justify-content: flex-end; gap: 8px; }
.pop { position: relative; }
.pop .menu { position: absolute; right: 0; top: calc(100% + 4px); z-index: 40; min-width: 224px; }
@media (max-width: 960px) {
  .mod-grid { grid-template-columns: 20px 24px minmax(0, 1fr) auto; }
  .mod-hide { display: none; }
}

/* Toggle switch */
.switch { position: relative; display: inline-flex; flex: none; width: 40px; height: 24px; cursor: pointer; }
.switch input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.switch .track { width: 40px; height: 24px; border-radius: 999px; background: #A9B2C0; transition: background-color .12s; }
.switch .track::after { content: ""; position: absolute; top: 2px; left: 2px; width: 20px; height: 20px; border-radius: 50%; background: #fff; transition: transform .12s; }
.switch input:checked + .track { background: var(--brand); }
.switch input:checked + .track::after { transform: translateX(16px); }
.switch input:focus-visible + .track { outline: 2px solid var(--brand); outline-offset: 2px; }
.switch-row { cursor: pointer; }
.check { width: 20px; height: 20px; accent-color: var(--brand); flex: none; }

/* Expandable row: tasks and questions */
.acc > summary { list-style: none; display: grid; grid-template-columns: 24px minmax(0, 1fr) auto 20px; gap: 16px; align-items: center; padding: 16px 24px; cursor: pointer; }
.acc > summary::-webkit-details-marker { display: none; }
.acc > summary:hover { background: #FAFBFC; }
.acc .chev { transition: transform .12s; color: var(--muted); }
.acc[open] > summary .chev { transform: rotate(180deg); }
.acc-b { padding: 8px 24px 24px 64px; }
@media (max-width: 720px) { .acc-b { padding-left: 24px; } .acc > summary { grid-template-columns: 24px minmax(0, 1fr) 20px; } .acc > summary .sum-pill { display: none; } }
.group-h { padding: 12px 24px; background: #FAFBFC; font-size: 14px; font-weight: 600; color: var(--muted); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* Variant table rows */
.var-grid { display: grid; grid-template-columns: 32px minmax(0, .9fr) minmax(0, 1.5fr) 100px 104px; gap: 16px; align-items: start; padding: 16px 24px; }
.var-head { padding-top: 12px; padding-bottom: 12px; background: #FAFBFC; border-bottom: 1px solid var(--line); font-size: 14px; font-weight: 600; color: var(--muted); align-items: center; }
@media (max-width: 960px) { .var-grid { grid-template-columns: 32px minmax(0, 1fr); } .var-head { display: none; } .var-grid > :nth-child(n+3) { grid-column: 2; } }

/* Validation and form messages */
.err { color: #B42318; font-weight: 600; font-size: 14px; margin-top: 8px; }
.inline-in { display: inline-block; width: 88px; height: 36px; margin: 0 4px; vertical-align: middle; text-align: center; }
.inline-sel { display: inline-block; width: auto; max-width: 100%; height: 36px; margin: 0 4px; vertical-align: middle; }

/* Sticky save bar */
.savebar { position: sticky; bottom: 16px; z-index: 20; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 24px; background: #fff; border: 1px solid var(--line-strong); border-radius: 8px; box-shadow: 0 8px 24px rgba(21,26,35,.12); }

.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 14px; color: var(--muted); }
.crumbs a:hover { color: var(--ink); text-decoration: underline; }
.crumbs i { font-size: 10px; }
.mono-area { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 14px; line-height: 1.6; }
textarea.input { height: auto; padding: 8px 12px; line-height: 1.5; }

/* Three equal panels, files, checks, dropzone, meter */
.stack-3 { display: grid; gap: 24px; }
@media (min-width: 1024px) { .stack-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.file-grid { display: grid; grid-template-columns: 20px minmax(0, 1.5fr) 72px minmax(0, 1fr) 120px; gap: 16px; align-items: center; padding: 16px 24px; }
.file-head { padding-top: 12px; padding-bottom: 12px; background: #FAFBFC; border-bottom: 1px solid var(--line); font-size: 14px; font-weight: 600; color: var(--muted); }
@media (max-width: 960px) { .file-grid { grid-template-columns: 20px minmax(0, 1fr) auto; } .file-hide { display: none; } }
.chk-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.5fr) minmax(0, 1.1fr) 200px; gap: 16px; align-items: start; padding: 16px 24px; }
.chk-head { padding-top: 12px; padding-bottom: 12px; background: #FAFBFC; border-bottom: 1px solid var(--line); font-size: 14px; font-weight: 600; color: var(--muted); align-items: center; }
@media (max-width: 960px) { .chk-grid { grid-template-columns: minmax(0, 1fr); gap: 8px; } .chk-head { display: none; } }
.dropzone { border: 2px dashed var(--line-strong); border-radius: 8px; padding: 24px; background: var(--paper); text-align: center; }
.dropzone.over { border-color: var(--brand); background: var(--brand-soft); }
.meter { height: 8px; border-radius: 999px; background: var(--line); }
.meter > span { display: block; height: 100%; border-radius: 999px; background: var(--brand); }
.qr svg { display: block; width: 160px; height: 160px; }

.is-hidden { display: none !important; }
.sr-only-x { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
[data-lock][aria-disabled="true"] { opacity: .5; cursor: not-allowed; pointer-events: none; }

/* State switches driven by <html data-status> and <html data-data> */
html[data-status="live"] .if-draft, html[data-status="closed"] .if-draft { display: none !important; }
html[data-status="draft"] .if-live, html[data-status="closed"] .if-live { display: none !important; }
html[data-status="draft"] .if-data { display: none !important; }
html[data-status="draft"] .if-closed, html[data-status="live"] .if-closed { display: none !important; }
html[data-data="empty"] .when-sample { display: none !important; }
html[data-data="sample"] .when-empty { display: none !important; }
.acc-plain > summary { grid-template-columns: minmax(0, 1fr) 20px; }

/* Click heatmap panel (templates/modules/_heatmap.html, static/heatmap.js) */
.hm-devices { padding-bottom: 0; }
.hm-body { overflow-x: auto; background: var(--paper); }
.hm-stage { position: relative; display: block; width: fit-content; max-width: 100%; margin: 0 auto; border: 1px solid var(--line); background: #fff; }
.hm-stage img { display: block; max-width: 100%; height: auto; }
.hm-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hm-foot > * + * { margin-top: 8px; }
.hm-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.hm-ramp { width: 160px; height: 12px; border: 1px solid var(--line); border-radius: 2px; }
.hm-dim { opacity: .45; }
.seg button:disabled { opacity: .4; cursor: not-allowed; }