/*
 * AZ-104 practice exam.
 * Visual idea: an optical answer sheet. Drop-out green form ink draws the structure,
 * graphite marks the answers, and a highlighter marks flagged questions.
 */
:root {
  --paper: #e9efeb;
  --sheet: #fbfcfa;
  --ink: #1d2826;
  --ink-2: #4c5b58;
  --form: #3b7a63;
  --form-line: #9ec5b4;
  --form-faint: #dce9e2;
  --hover: rgba(59, 122, 99, 0.08);
  --graphite: #2c3134;
  --on-graphite: #f5f7f6;
  --mark: #f3c63a;
  --on-mark: #2a2204;
  --right: #16794a;
  --right-bg: #e1f2e8;
  --wrong: #b3261e;
  --wrong-bg: #fbe8e6;
  --focus: #1d5fc4;
  --font-form: "Bahnschrift", "DIN Alternate", "DIN 2014", "Roboto Condensed", "Arial Narrow", sans-serif;
  --font-body: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-code: "Cascadia Mono", "SF Mono", ui-monospace, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121816;
    --sheet: #1a2220;
    --ink: #e1e9e5;
    --ink-2: #a3b3ad;
    --form: #7cc0a4;
    --form-line: #3d5a4f;
    --form-faint: #26332e;
    --hover: rgba(124, 192, 164, 0.09);
    --graphite: #dfe6e2;
    --on-graphite: #151b19;
    --mark: #d9ae2a;
    --on-mark: #221a02;
    --right: #5fd197;
    --right-bg: #173a29;
    --wrong: #f28b7f;
    --wrong-bg: #3d1f1b;
    --focus: #8ab4ff;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.55 var(--font-body);
}
a { color: var(--form); }
a:hover { color: var(--ink); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
#app:focus, [tabindex="-1"]:focus { outline: none; }
code { font-family: var(--font-code); font-size: 0.92em; }
pre {
  margin: 0 0 14px;
  padding: 12px 14px;
  overflow-x: auto;
  background: var(--paper);
  border-left: 3px solid var(--form);
  font: 14px/1.5 var(--font-code);
}
pre code { font-size: inherit; }
h1, h2, h3 { font-family: var(--font-form); font-weight: 600; letter-spacing: 0.005em; }
h1 { font-size: 36px; line-height: 1.15; margin: 0 0 8px; }
h2 { font-size: 24px; line-height: 1.2; margin: 0 0 12px; }
h3 { font-size: 18px; line-height: 1.3; margin: 22px 0 8px; }
p { margin: 0 0 12px; }

.skip { position: absolute; left: -999px; top: 8px; }
.skip:focus { left: 12px; z-index: 60; background: var(--sheet); padding: 8px 12px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.noscript { max-width: 60ch; margin: 40px auto; padding: 0 24px; }

/* Site header */
.site {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 28px;
  padding: 14px 24px;
  background: var(--sheet);
  border-bottom: 2px solid var(--form);
}
.brand { font: 600 21px/1.2 var(--font-form); color: var(--ink); text-decoration: none; }
.site-nav { display: flex; gap: 20px; }
.site-nav a {
  color: var(--ink-2); text-decoration: none; padding: 2px 0;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--form); }

/* Page and sheets */
.page {
  max-width: 1180px; margin: 0 auto; padding: 28px 24px 64px;
  display: grid; gap: 24px;
}
.sheet {
  background: var(--sheet);
  border: 1px solid var(--form-line);
  padding: 22px 26px 26px;
  min-width: 0;
}
.sheet.form-sheet { border-top: 4px solid var(--form); }
.lede { color: var(--ink-2); max-width: 62ch; }
.hint { color: var(--ink-2); font-size: 15px; }
.empty { color: var(--ink-2); max-width: 55ch; }
.note {
  color: var(--ink-2); font-size: 15px; max-width: 72ch;
  border-left: 3px solid var(--form-line); padding-left: 12px; margin-top: 14px;
}
.warn { color: var(--wrong); }
.banner {
  max-width: 1180px; margin: 20px auto 0; padding: 12px 16px;
  background: var(--wrong-bg); color: var(--ink); border-left: 4px solid var(--wrong);
}

/* Dashboard layout */
.dash { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); grid-template-areas: "start record" "bank bank"; }
.dash.has-history {
  grid-template-areas: "start record" "domains missed" "recent recent" "bank bank";
}
.dash .start { grid-area: start; }
.dash .record { grid-area: record; }
.dash .domains { grid-area: domains; }
.dash .missed { grid-area: missed; }
.dash .recent { grid-area: recent; }
.dash .bankinfo { grid-area: bank; }

/* Start form */
.fields {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 28px; margin-top: 8px;
}
.field label {
  display: block; margin-bottom: 4px;
  font: 500 14px/1.3 var(--font-form); color: var(--form);
}
.field select, .field input {
  width: 100%; padding: 6px 2px;
  font: inherit; color: var(--ink);
  background: transparent;
  border: 0; border-bottom: 1.5px solid var(--form); border-radius: 0;
}
.field select option { background: var(--sheet); color: var(--ink); }
.field-help { grid-column: 1 / -1; color: var(--ink-2); font-size: 15px; margin: 0; max-width: 70ch; }
.start-actions { grid-column: 1 / -1; }
.resume {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  margin: 4px 0 20px; padding: 14px 16px;
  border: 1.5px dashed var(--form);
}
.resume p { margin: 0; }
.resume .actions { margin: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px;
  font: 600 16px/1 var(--font-form); letter-spacing: 0.01em;
  color: var(--on-graphite); background: var(--graphite);
  border: 1.5px solid var(--graphite); border-radius: 3px;
  text-decoration: none; cursor: pointer;
}
.btn:hover { color: var(--on-graphite); filter: brightness(1.12); }
.btn.quiet { color: var(--ink); background: transparent; border-color: var(--form-line); }
.btn.quiet:hover { border-color: var(--form); background: var(--hover); filter: none; }
.btn.danger { color: #fff; background: var(--wrong); border-color: var(--wrong); }
.btn.big { padding: 14px 26px; font-size: 18px; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; filter: none; }
.linkish {
  padding: 0; font: inherit; color: var(--form); background: none; border: 0;
  text-decoration: underline; cursor: pointer;
}
.linkish.danger { color: var(--wrong); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }

/* Tables */
.table-wrap { overflow-x: auto; }
.ledger { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.ledger th, .ledger td {
  padding: 8px 12px 8px 0; text-align: left; vertical-align: top;
  border-bottom: 1px solid var(--form-faint); font-weight: 400;
}
.ledger thead th {
  font: 500 14px/1.3 var(--font-form); color: var(--form);
  border-bottom: 1.5px solid var(--form-line); white-space: nowrap;
}
.ledger tbody th { color: var(--ink-2); }
.ledger.kv td { text-align: right; color: var(--ink); }
.ledger .num { text-align: right; white-space: nowrap; }
.ledger.history tbody th { color: var(--ink); }
.row-actions { white-space: nowrap; }
.row-actions > * + * { margin-left: 14px; }
.objcode { color: var(--form); margin-right: 6px; font-variant-numeric: tabular-nums; }
.minibar {
  display: inline-block; width: 80px; height: 8px; margin-right: 10px;
  vertical-align: middle; background: var(--form-faint);
}
.minibar > span { display: block; height: 100%; background: var(--graphite); }

/* Charts */
.chart { display: block; width: 100%; height: auto; margin-top: 4px; }
.chart .grid { stroke: var(--form-faint); stroke-width: 1; }
.chart .axis { fill: var(--ink-2); font: 12px var(--font-form); }
.chart .pass { stroke: var(--form); stroke-width: 1.5; stroke-dasharray: 5 4; }
.chart .pass-label { fill: var(--form); font: 12px var(--font-form); }
.chart .line { fill: none; stroke: var(--graphite); stroke-width: 2; }
.chart .dot { fill: var(--sheet); stroke: var(--graphite); stroke-width: 2; }
.chart .dot.pass-dot { fill: var(--graphite); }
.bars { display: grid; gap: 2px; }
.bar-row {
  display: grid; grid-template-columns: minmax(0, 15rem) minmax(0, 1fr) 3.6rem;
  gap: 2px 12px; align-items: center; padding: 6px 0;
  border-bottom: 1px solid var(--form-faint);
}
.bar-label { font-size: 15px; }
.bar-track { height: 12px; background: var(--form-faint); }
.bar-fill { height: 100%; background: var(--graphite); }
.bar-value { text-align: right; font-variant-numeric: tabular-nums; }
.bar-detail { grid-column: 2 / -1; color: var(--ink-2); font-size: 14px; }

/* Lists on the dashboard */
.missed-list { margin: 0; padding-left: 1.6em; }
.missed-list li { padding: 7px 0; border-bottom: 1px solid var(--form-faint); }
.missed-meta { display: block; color: var(--ink-2); font-size: 14px; }
.bank-table { max-width: 640px; }
.problems { color: var(--wrong); }

/* Test bar */
.testbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px;
  padding: 10px 24px;
  background: var(--sheet); border-bottom: 2px solid var(--form);
}
.tb-count { font: 600 18px/1 var(--font-form); white-space: nowrap; }
.tb-num { font-size: 28px; }
.tb-progress { flex: 1 1 140px; height: 8px; background: var(--form-faint); }
.tb-progress > div { height: 100%; background: var(--graphite); }
.tb-meta { color: var(--ink-2); font-size: 14px; white-space: nowrap; }
.tb-timer { font: 600 18px/1 var(--font-form); font-variant-numeric: tabular-nums; min-width: 10ch; }
.testbar .btn { padding: 9px 14px; }

/* Question sheet */
.test-layout {
  max-width: 1180px; margin: 0 auto; padding: 24px;
  display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 28px; align-items: start;
}
.qsheet {
  background: var(--sheet); border: 1px solid var(--form-line); border-top: 4px solid var(--form);
  padding: 22px 28px 20px; min-width: 0;
}
.qhead { font-size: 28px; margin: 0; }
.qdomain { margin: 2px 0 16px; font: 500 15px/1.3 var(--font-form); color: var(--form); }
.qtext { font-size: 18px; line-height: 1.6; max-width: 72ch; }
.qinstr { margin: 8px 0 6px; font: 500 15px/1.3 var(--font-form); color: var(--ink-2); }
.options { border-top: 1px solid var(--form-faint); }
.option {
  display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 14px; align-items: start;
  width: 100%; padding: 12px 10px;
  font: inherit; font-size: 17px; line-height: 1.5; color: var(--ink); text-align: left;
  background: transparent; border: 0; border-bottom: 1px solid var(--form-faint);
  cursor: pointer;
}
.option:hover { background: var(--hover); }
.bubble {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px;
  font: 600 14px/1 var(--font-form); color: var(--form);
  background: var(--sheet); border: 1.5px solid var(--form); border-radius: 50%;
}
.options[role="group"] .bubble, .ri-options.multi .bubble { border-radius: 5px; }
.option.is-on .bubble { color: var(--on-graphite); background: var(--graphite); border-color: var(--graphite); }
.otext { padding-top: 3px; }
.qnav { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.qnav .push { margin-left: auto; }
.btn.flag.is-on { color: var(--on-mark); background: var(--mark); border-color: var(--mark); }
.keys { margin: 14px 0 0; color: var(--ink-2); font-size: 14px; }

/* Answer sheet grid */
.answer-sheet {
  position: sticky; top: 76px;
  background: var(--sheet); border: 1px solid var(--form-line); padding: 16px 16px 14px;
}
.answer-sheet h2 { font-size: 20px; }
.sheet-grid {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(10, minmax(0, 1fr)); gap: 8px 2px;
}
.graded { max-width: 560px; }
.cell {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  width: 100%; padding: 3px 0;
  font: 500 11px/1 var(--font-form); color: var(--ink-2); text-decoration: none;
  background: none; border: 0; border-radius: 3px; cursor: pointer;
}
.cell:hover { background: var(--hover); color: var(--ink); }
.cell-num { padding: 1px 3px; border-radius: 2px; font-variant-numeric: tabular-nums; }
.cell-bubble {
  width: 18px; height: 18px; border-radius: 50%;
  border: 1.5px solid var(--form); background: transparent;
}
.cell.is-answered .cell-bubble { background: var(--graphite); border-color: var(--graphite); }
.cell.is-flagged .cell-num { color: var(--on-mark); background: var(--mark); }
.cell.is-current { box-shadow: 0 0 0 2px var(--ink); color: var(--ink); }
.cell.is-right .cell-bubble { background: var(--right); border-color: var(--right); }
.cell.is-wrong .cell-bubble { background: var(--wrong); border-color: var(--wrong); }
.cell.is-blank .cell-bubble { border-style: dashed; }
.legend {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 16px;
  margin: 12px 0 0; color: var(--ink-2); font-size: 13px;
}
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.lg { display: inline-block; width: 12px; height: 12px; border: 1.5px solid var(--form); border-radius: 50%; }
.lg.answered { background: var(--graphite); border-color: var(--graphite); }
.lg.flagged { background: var(--mark); border-color: var(--mark); border-radius: 2px; }
.lg.current { box-shadow: 0 0 0 2px var(--ink); border-color: transparent; }
.lg.right { background: var(--right); border-color: var(--right); }
.lg.wrong { background: var(--wrong); border-color: var(--wrong); }
.lg.blank { border-style: dashed; }
.sheet-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.sheet-actions .btn { padding: 8px 12px; font-size: 14px; }

.paused { max-width: 560px; margin: 48px auto; text-align: center; }
.paused .actions { justify-content: center; }

/* Results */
.result-top { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: 20px; }
.meta { color: var(--ink-2); }
.scorebox { display: grid; min-width: 200px; padding: 10px 18px 12px; border: 2px solid var(--form); }
.scorebox-label { font: 500 14px/1.3 var(--font-form); color: var(--form); }
.scorebox-value { font: 600 56px/1.05 var(--font-form); font-variant-numeric: tabular-nums; }
.scorebox-note { font-size: 14px; color: var(--ink-2); }
.scorebox.is-pass .scorebox-value { color: var(--right); }
.scorebox.is-fail .scorebox-value { color: var(--wrong); }
.result-line { font-size: 18px; margin-top: 14px; }
.metric-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.slow-list { margin: 0; padding-left: 1.4em; }
.slow-list li { padding: 5px 0; }

/* Review */
.review-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; }
.filter-link {
  padding: 6px 10px; color: var(--ink); text-decoration: none;
  border: 1px solid var(--form-line); border-radius: 3px;
}
.filter-link:hover { background: var(--hover); }
.filter-link[aria-current="true"] { color: var(--on-graphite); background: var(--graphite); border-color: var(--graphite); }
.review-toolbar .field { margin-left: auto; min-width: 220px; }
.review-list { display: grid; gap: 18px; }
.review-item {
  background: var(--sheet); border: 1px solid var(--form-line); border-left: 5px solid var(--form-line);
  padding: 20px 24px; min-width: 0;
}
.review-item.is-right { border-left-color: var(--right); }
.review-item.is-wrong { border-left-color: var(--wrong); }
.review-item.is-blank { border-left-style: dashed; }
.ri-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 14px; }
.ri-head h2 { margin: 0; font-size: 22px; }
.verdict-tag, .flag-tag {
  padding: 3px 8px; border-radius: 3px; font: 600 14px/1.2 var(--font-form);
}
.verdict-tag.is-right { color: var(--right); background: var(--right-bg); }
.verdict-tag.is-wrong { color: var(--wrong); background: var(--wrong-bg); }
.verdict-tag.is-blank { color: var(--ink-2); background: var(--form-faint); }
.flag-tag { color: var(--on-mark); background: var(--mark); }
.ri-meta { margin: 6px 0 14px; color: var(--ink-2); font-size: 14px; }
.ri-options { list-style: none; margin: 0 0 16px; padding: 0; border-top: 1px solid var(--form-faint); }
.ri-opt {
  display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 14px;
  padding: 10px 8px; border-bottom: 1px solid var(--form-faint);
}
.ri-opt.is-answer { background: var(--right-bg); }
.ri-opt.is-answer .bubble { color: var(--right); border: 2px solid var(--right); }
.ri-opt.is-selected .bubble { color: var(--on-graphite); background: var(--graphite); border-color: var(--graphite); }
.ri-opt.is-answer.is-selected .bubble { color: #fff; background: var(--right); border-color: var(--right); }
.ri-opt.is-miss { background: var(--wrong-bg); }
.ri-opt.is-miss .bubble { color: #fff; background: var(--wrong); border-color: var(--wrong); }
.ri-note { display: block; margin-top: 4px; font: 600 13px/1.3 var(--font-form); color: var(--ink-2); }
.ri-opt.is-answer .ri-note { color: var(--right); }
.ri-opt.is-miss .ri-note { color: var(--wrong); }
.explain { padding-top: 12px; border-top: 1.5px solid var(--form-line); }
.explain h3 { margin: 0 0 6px; font-size: 17px; color: var(--form); }
.explain p { max-width: 75ch; margin: 0; }
.ri-stats { margin: 12px 0 0; color: var(--ink-2); font-size: 14px; }

/* Toast and dialog */
.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 50;
  max-width: min(92vw, 560px); padding: 12px 16px;
  color: var(--on-graphite); background: var(--graphite); border-radius: 4px;
  visibility: hidden; opacity: 0; transform: translate(-50%, 12px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}
.toast.show { visibility: visible; opacity: 1; transform: translate(-50%, 0); }
.modal-backdrop {
  position: fixed; inset: 0; z-index: 40;
  display: flex; align-items: center; justify-content: center; padding: 20px;
  background: rgba(12, 18, 16, 0.55);
}
.modal {
  width: 100%; max-width: 520px; padding: 22px 24px;
  background: var(--sheet); border-top: 4px solid var(--form);
}
.modal-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; margin-top: 18px; }
.danger-zone { border-color: var(--wrong); }

/* Narrow screens */
@media (max-width: 900px) {
  .dash, .dash.has-history { grid-template-columns: minmax(0, 1fr); grid-template-areas: none; }
  .dash > * { grid-area: auto !important; }
  .test-layout { grid-template-columns: minmax(0, 1fr); }
  .answer-sheet { position: static; }
  .metric-grid { grid-template-columns: minmax(0, 1fr); }
  .fields { grid-template-columns: minmax(0, 1fr); }
  .review-toolbar .field { margin-left: 0; }
}
@media (max-width: 560px) {
  .site { padding: 12px 14px; }
  .page, .test-layout { padding: 16px 12px 48px; }
  .sheet, .qsheet, .review-item { padding: 18px 16px; }
  .testbar { padding: 8px 12px; gap: 8px 12px; }
  .tb-progress { display: none; }
  h1 { font-size: 30px; }
  .qtext { font-size: 17px; }
  .bar-row { grid-template-columns: minmax(0, 1fr) 3.4rem; }
  .bar-track { grid-column: 1 / -1; grid-row: 2; }
  .bar-detail { grid-column: 1 / -1; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}