/* Test Permiso B 2026 · estilos (mobile-first, claro y oscuro) */
:root {
  --bg: #f3f4f1; --surface: #ffffff; --surface-2: #eceee9; --ink: #1b2024; --muted: #5b646b; --line: #d9ddd8;
  --blue: #0b4f9c; --blue-ink: #ffffff; --blue-soft: #e3ecf7; --amber: #f2b705; --amber-ink: #3a2c00; --amber-soft: #fdf3cf;
  --ok: #1f7a4d; --ok-soft: #e1f2e8; --ko: #b8322a; --ko-soft: #f8e4e2;
  --radius: 8px; --gutter: 16px;
  --font: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: Overpass, "Arial Narrow", system-ui, sans-serif;
  --mono: "Overpass Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #14181b; --surface: #1d2226; --surface-2: #252b30; --ink: #e8ebe8; --muted: #9aa3a9; --line: #2f363b;
    --blue: #6ea6ea; --blue-ink: #0d1a2a; --blue-soft: #1b2c42; --amber-soft: #3a3113;
    --ok: #5cc28c; --ok-soft: #173326; --ko: #ef7a70; --ko-soft: #3a1d1b;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #14181b; --surface: #1d2226; --surface-2: #252b30; --ink: #e8ebe8; --muted: #9aa3a9; --line: #2f363b;
  --blue: #6ea6ea; --blue-ink: #0d1a2a; --blue-soft: #1b2c42; --amber-soft: #3a3113;
  --ok: #5cc28c; --ok-soft: #173326; --ko: #ef7a70; --ko-soft: #3a1d1b;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 var(--font);
  padding: env(safe-area-inset-top, 0) 0 env(safe-area-inset-bottom, 0); }
img, svg { max-width: 100%; }
[hidden] { display: none !important; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(26px, 5vw, 36px); font-weight: 800; }
h2 { font-size: 22px; font-weight: 800; }
h3 { font-size: 17px; font-weight: 600; }
p { margin: 0; }
a { color: var(--blue); }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 50; }
.skip:focus { left: 8px; }
.boot { padding: 40px var(--gutter); color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.eyebrow { font: 600 12px/1 var(--display); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---------- barra superior ---------- */
.topbar { position: sticky; top: 0; z-index: 20; background: var(--surface); border-bottom: 1px solid var(--line); }
.topbar-inner { max-width: 1080px; margin: 0 auto; padding: 10px var(--gutter); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 600 16px var(--display); }
.brand b { color: var(--blue); }
.brand-plate { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: #fff; color: #111;
  border: 5px solid #c8102e; font: 800 13px var(--display); }
.topnav { display: flex; align-items: center; gap: 4px; }
.topnav a, .link { font: 600 14px var(--display); color: var(--muted); text-decoration: none; padding: 8px 10px; border-radius: 6px; background: none; border: 0; cursor: pointer; }
.topnav a[aria-current="page"] { color: var(--ink); background: var(--surface-2); }
@media (max-width: 420px) { .brand span:last-child { display: none; } }

/* ---------- estructura ---------- */
main { outline: none; }
.page { max-width: 1080px; margin: 0 auto; padding: 24px var(--gutter) 64px; display: flex; flex-direction: column; gap: 24px; }
.narrow { max-width: 720px; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.between { justify-content: space-between; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }

/* ---------- botones y formularios ---------- */
.btn { font: 700 15px var(--display); padding: 11px 18px 9px; border-radius: 6px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; }
.btn:hover:not(:disabled) { border-color: var(--blue); }
.btn.primary { background: var(--blue); border-color: var(--blue); color: var(--blue-ink); }
.btn.danger { background: var(--ko); border-color: var(--ko); color: #fff; }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn[aria-pressed="true"] { background: var(--amber-soft); border-color: var(--amber); }
label { font-weight: 700; font-size: 14px; display: flex; flex-direction: column; gap: 6px; }
input, select { font: 16px var(--font); color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; min-height: 44px; width: 100%; }
input:focus, select:focus { border-color: var(--blue); outline: 2px solid var(--blue-soft); }
.form-error { color: var(--ko); font-weight: 700; min-height: 1.5em; }

/* ---------- acceso ---------- */
.auth { min-height: 100vh; display: grid; place-items: center; padding: 24px var(--gutter); }
.auth-box { width: 100%; max-width: 420px; display: flex; flex-direction: column; gap: 18px; }
.auth-head { display: flex; flex-direction: column; gap: 8px; }
.auth-head .plate { display: inline-block; background: var(--amber); color: var(--amber-ink); padding: 2px 10px 0; border-radius: 4px; margin-left: 4px; }
.tabs { display: flex; border-bottom: 1px solid var(--line); }
.tabs button { flex: 1; font: 600 15px var(--display); background: none; border: 0; color: var(--muted); padding: 10px; border-bottom: 3px solid transparent; cursor: pointer; margin-bottom: -1px; }
.tabs button[aria-selected="true"] { color: var(--ink); border-color: var(--blue); }

/* ---------- inicio ---------- */
.hello { display: flex; flex-direction: column; gap: 6px; }
.resume { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; background: var(--amber-soft); border: 1px solid var(--amber); border-radius: var(--radius); padding: 14px 16px; }
.modes { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 720px) { .modes { grid-template-columns: repeat(2, 1fr); } }
.mode { display: flex; flex-direction: column; gap: 10px; }
.mode.featured { border-color: var(--blue); border-width: 2px; }
.mode .facts { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font: 600 12px/1 var(--display); letter-spacing: .04em; padding: 6px 8px 4px; border-radius: 4px; background: var(--surface-2); color: var(--muted); }
.chip.blue { background: var(--blue-soft); color: var(--blue); }
.chip.new { background: var(--amber); color: var(--amber-ink); }
.mode .actions { margin-top: auto; display: flex; gap: 8px; flex-wrap: wrap; }


/* ---------- KPIs ---------- */
.kpis { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
@media (min-width: 720px) { .kpis { grid-template-columns: repeat(4, 1fr); } }
.kpi { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: flex; flex-direction: column; gap: 4px; }
.kpi b { font: 800 26px/1 var(--display); font-variant-numeric: tabular-nums; }

/* ---------- examen ---------- */
.exam { max-width: 1080px; margin: 0 auto; padding: 16px var(--gutter) 96px; display: grid; gap: 16px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .exam { grid-template-columns: minmax(0, 1fr) 300px; align-items: start; } }
.exam-head { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; grid-column: 1 / -1; }
.timer { font: 500 22px var(--mono); font-variant-numeric: tabular-nums; padding: 6px 12px; border-radius: 6px; background: var(--surface); border: 1px solid var(--line); }
.timer.warn { background: var(--amber-soft); border-color: var(--amber); }
.timer.crit { background: var(--ko-soft); border-color: var(--ko); color: var(--ko); }
.progress { height: 6px; background: var(--surface-2); border-radius: 3px; overflow: hidden; grid-column: 1 / -1; }
.progress span { display: block; height: 100%; background: var(--blue); transition: width .2s; }

.qcard { display: flex; flex-direction: column; gap: 16px; }
.qmeta { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; align-items: center; }
.qtext { font-size: 20px; font-weight: 700; line-height: 1.35; }
@media (max-width: 520px) { .qtext { font-size: 18px; } }
.figure { align-self: center; width: 100%; max-width: 480px; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: var(--surface-2); padding: 0; cursor: zoom-in; display: block; }
.figure svg { display: block; width: 100%; height: auto; }
.options { display: flex; flex-direction: column; gap: 8px; margin: 0; padding: 0; border: 0; }
.opt { display: flex; gap: 12px; align-items: flex-start; text-align: left; width: 100%; font: inherit; color: inherit; background: var(--bg);
  border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px; cursor: pointer; min-height: 48px; }
.opt:hover:not(:disabled) { border-color: var(--blue); }
.opt .l { font: 800 14px var(--display); width: 28px; height: 28px; flex: none; display: grid; place-items: center; border-radius: 50%; border: 2px solid currentColor; color: var(--muted); }
.opt[aria-checked="true"] { border-color: var(--blue); background: var(--blue-soft); }
.opt[aria-checked="true"] .l { background: var(--blue); border-color: var(--blue); color: var(--blue-ink); }
.opt.ok { background: var(--ok-soft); border-color: var(--ok); } .opt.ok .l { color: var(--ok); background: none; border-color: var(--ok); }
.opt.ko { background: var(--ko-soft); border-color: var(--ko); } .opt.ko .l { color: var(--ko); background: none; border-color: var(--ko); }
.opt:disabled { cursor: default; }
.feedback { border-left: 4px solid var(--ok); padding: 4px 0 4px 12px; }
.feedback.bad { border-color: var(--ko); }
.feedback b { display: block; }
.qactions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; }
.qactions .row { gap: 8px; }
.kbd-hint { font-size: 13px; color: var(--muted); }
@media (hover: none) { .kbd-hint { display: none; } }

/* navegación por número */
.qnav { display: flex; flex-direction: column; gap: 10px; }
@media (min-width: 900px) { .qnav { position: sticky; top: 72px; } }
.qgrid { display: grid; grid-template-columns: repeat(10, minmax(0, 1fr)); gap: 4px; margin-top: 10px; }
@media (min-width: 900px) { .qgrid { grid-template-columns: repeat(6, minmax(0, 1fr)); } }
.qnav details > summary { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; cursor: pointer; list-style: none; }
.qnav details > summary::-webkit-details-marker { display: none; }
.qnav details > summary::after { content: "▾"; color: var(--muted); }
.qnav details[open] > summary::after { content: "▴"; }
.qnav details > summary h3 { margin-right: auto; }
.qnav .legend { margin-top: 10px; } .qnav .kbd-hint { margin-top: 8px; }
@media (max-width: 899px) { .qnav { order: -1; padding: 12px 16px; } .exam-head, .progress { order: -2; } }
.topic-actions { flex-direction: column; align-items: stretch; }
.topic-actions label { margin-bottom: -2px; }
.qbtn { position: relative; aspect-ratio: 1; min-width: 0; max-width: 100%; border: 1px solid var(--line); background: var(--surface); border-radius: 4px;
  font: 500 12px var(--mono); color: var(--muted); cursor: pointer; padding: 0; }
.qbtn.answered { background: var(--blue-soft); color: var(--blue); border-color: var(--blue-soft); }
.qbtn.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.qbtn.ko { background: var(--ko); border-color: var(--ko); color: #fff; }
.qbtn[aria-current="step"] { outline: 2px solid var(--ink); outline-offset: 1px; }
.qbtn.flagged::after { content: ""; position: absolute; top: 2px; right: 2px; width: 7px; height: 7px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 1px var(--surface); }
.legend { display: flex; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--muted); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: -1px; border: 1px solid var(--line); }
.legend .a { background: var(--blue-soft); } .legend .f { background: var(--amber); border-radius: 50%; }

.confirm { border: 2px solid var(--amber); background: var(--amber-soft); }

/* ---------- resultado ---------- */
.verdict { font: 800 clamp(40px, 9vw, 64px)/1 var(--display); letter-spacing: .02em; }
.verdict.pass { color: var(--ok); } .verdict.fail { color: var(--ko); } .verdict.neutral { color: var(--blue); }
.review-list { display: flex; flex-direction: column; gap: 12px; }
.review-item { display: flex; flex-direction: column; gap: 10px; }
.review-item .figure { max-width: 320px; align-self: flex-start; }
.answer-line { display: flex; gap: 8px; align-items: baseline; }
.answer-line .tag { font: 700 11px var(--display); letter-spacing: .06em; text-transform: uppercase; padding: 3px 6px 1px; border-radius: 3px; flex: none; }
.tag.yours { background: var(--ko-soft); color: var(--ko); } .tag.right { background: var(--ok-soft); color: var(--ok); }

/* ---------- tablas y barras ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font: 600 12px var(--display); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; }
.pill { font: 700 12px var(--display); padding: 3px 8px 1px; border-radius: 99px; }
.pill.pass { background: var(--ok-soft); color: var(--ok); } .pill.fail { background: var(--ko-soft); color: var(--ko); } .pill.neutral { background: var(--surface-2); color: var(--muted); }
.bars { display: flex; flex-direction: column; gap: 10px; }
.bar-row { display: grid; grid-template-columns: minmax(110px, 180px) 1fr 52px; gap: 10px; align-items: center; font-size: 14px; }
.bar { height: 10px; border-radius: 5px; background: var(--surface-2); overflow: hidden; }
.bar span { display: block; height: 100%; border-radius: 5px; }
.bar .good { background: var(--ok); } .bar .mid { background: var(--amber); } .bar .low { background: var(--ko); } .bar .none { background: transparent; }
@media (max-width: 480px) { .bar-row { grid-template-columns: 1fr 52px; } .bar-row .bar { grid-column: 1 / -1; grid-row: 2; } }

/* ---------- zoom y aviso ---------- */
dialog#zoom { border: 0; border-radius: var(--radius); padding: 16px; background: var(--surface); color: var(--ink); width: min(960px, 96vw); }
dialog#zoom::backdrop { background: rgb(0 0 0 / .6); }
dialog#zoom .zoom-body svg { width: 100%; height: auto; display: block; }
dialog#zoom .zoom-caption { margin-top: 8px; color: var(--muted); font-size: 14px; }
dialog#zoom form { display: flex; justify-content: flex-end; margin-top: 12px; }
#toast { position: fixed; left: 50%; bottom: calc(16px + env(safe-area-inset-bottom, 0)); transform: translateX(-50%); background: var(--ink); color: var(--bg);
  padding: 10px 16px; border-radius: 6px; font-weight: 700; z-index: 60; max-width: calc(100vw - 32px); }

@media (prefers-reduced-motion: no-preference) {
  .opt, .qbtn, .btn { transition: border-color .15s, background-color .15s; }
}