/* DIYToolQuiz shell: paper and ink editorial system.
 * Quiz pages (QuestionPage, Introduction, ResultPage) are styled by
 * quiz-reference.css plus the protected block near the end of this file. */

@font-face { font-family:'Oswald'; src:url('/assets/fonts/oswald-var.woff2') format('woff2'); font-weight:200 700; font-display:swap; }
@font-face { font-family:'Manrope'; src:url('/assets/fonts/manrope-var.woff2') format('woff2'); font-weight:200 800; font-display:swap; }

:root {
  --c-paper:#faf7f2; --c-paper-2:#f2ece1; --c-paper-3:#fff;
  --c-ink:#111214; --c-ink-2:#34373c; --c-muted:#6a6d72;
  --c-line:#e2dbcd; --c-line-dark:#cfc6b2;
  --c-accent:#a8551f; --c-accent-dark:#86410f; --c-accent-soft:#f3e3d4;
  --f-display:'Oswald', 'Arial Narrow', sans-serif;
  --f-body:'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --ease:cubic-bezier(0.22,1,0.36,1);
  --wrap:1200px;
}

*,::before,::after { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; scroll-behavior:smooth; scroll-padding-top:80px; }
body { margin:0; background:var(--c-paper); color:var(--c-ink); font-family:var(--f-body); font-size:16px; line-height:1.6; -webkit-font-smoothing:antialiased; }
body.nav-open { overflow:hidden; }
button,input { font:inherit; color:inherit; margin:0; }
a { color:inherit; text-decoration:none; }
img { max-width:100%; display:block; }
/* <picture> is only a format wrapper; the inner img keeps the layout. */
picture { display:contents; }
button,a { -webkit-tap-highlight-color:transparent; }
:where(a,button,input):focus-visible { outline:2px solid var(--c-accent); outline-offset:4px; }
h1,h2,h3 { margin:0; font-weight:600; }
.sr { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; }
.skip { position:absolute; left:16px; top:-64px; z-index:60; background:var(--c-ink); color:var(--c-paper); padding:8px 16px; }
.skip:focus { top:12px; }
main { display:block; outline:none; }
.wrap { width:100%; max-width:var(--wrap); margin:0 auto; padding:0 32px; }

/* Type */
.kicker { display:inline-flex; align-items:center; gap:12px; margin:0 0 24px; font-family:var(--f-display); font-size:12px; font-weight:500; letter-spacing:.16em; text-transform:uppercase; color:var(--c-muted); }
.kicker .dot { width:8px; height:8px; background:var(--c-accent); }
.display { font-family:var(--f-display); font-weight:600; font-size:clamp(40px,6vw,76px); line-height:.98; letter-spacing:-.005em; text-transform:uppercase; text-wrap:balance; }
.display em, .display-2 em { font-style:normal; color:var(--c-accent); }
.display-2 { font-family:var(--f-display); font-weight:600; font-size:clamp(28px,3.6vw,44px); line-height:1.05; text-transform:uppercase; text-wrap:balance; }
.lede { max-width:560px; margin:24px 0 0; font-size:18px; line-height:1.65; color:var(--c-ink-2); }
.tag { display:inline-block; margin:0; font-family:var(--f-display); font-size:11px; font-weight:500; letter-spacing:.14em; text-transform:uppercase; color:var(--c-accent); }
.meta { margin:8px 0 0; font-size:13px; color:var(--c-muted); }

/* Buttons */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:12px; min-height:48px; padding:0 24px; border:1px solid var(--c-ink); font-family:var(--f-display); font-size:14px; font-weight:500; letter-spacing:.1em; text-transform:uppercase; cursor:pointer; transition:background-color .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease); }
.btn span { display:inline-block; transition:transform .5s var(--ease); }
.btn:hover span { transform:translateX(4px); }
.btn-primary { background:var(--c-ink); color:var(--c-paper); }
.btn-primary:hover { background:var(--c-accent); border-color:var(--c-accent); }
.btn-ghost { background:transparent; color:var(--c-ink); }
.btn-ghost:hover { background:var(--c-ink); color:var(--c-paper); }

/* Header */
.site-head { position:sticky; top:0; z-index:40; border-bottom:1px solid var(--c-line); }
.site-head::before { content:''; position:absolute; inset:0; z-index:-1; background:rgba(250,247,242,.92); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px); }
.head-in { display:flex; align-items:center; justify-content:space-between; gap:32px; height:72px; }
.brand { display:inline-flex; align-items:center; gap:12px; flex:none; }
.brand-mark { flex:none; }
.brand-word { font-family:var(--f-display); font-size:20px; font-weight:600; letter-spacing:.05em; text-transform:uppercase; line-height:1; }
.brand-accent { color:var(--c-accent); }
.nav { display:flex; align-items:center; gap:32px; }
.nav a { position:relative; padding:8px 0; font-family:var(--f-display); font-size:13px; font-weight:500; letter-spacing:.1em; text-transform:uppercase; color:var(--c-ink-2); transition:color .25s var(--ease); }
.nav a::after { content:''; position:absolute; left:0; right:0; bottom:0; height:2px; background:var(--c-accent); transform:scaleX(0); transform-origin:left; transition:transform .5s var(--ease); }
.nav a:hover, .nav a[aria-current="page"] { color:var(--c-ink); }
.nav a:hover::after, .nav a[aria-current="page"]::after { transform:scaleX(1); }
.menu-btn { display:none; position:relative; width:48px; height:48px; margin-right:-12px; background:none; border:0; cursor:pointer; }
.menu-btn > span:not(.sr) { position:absolute; left:12px; width:24px; height:2px; background:var(--c-ink); transition:transform .5s var(--ease); }
.menu-btn > span:nth-child(1) { top:19px; }
.menu-btn > span:nth-child(2) { top:27px; }
.menu-btn[aria-expanded="true"] > span:nth-child(1) { transform:translateY(4px) rotate(45deg); }
.menu-btn[aria-expanded="true"] > span:nth-child(2) { transform:translateY(-4px) rotate(-45deg); }

/* Entrance + scroll reveal */
@keyframes rise { from { opacity:0; transform:translateY(32px); } to { opacity:1; transform:none; } }
.rise { animation:rise .7s var(--ease) both; }
.js .reveal { opacity:0; transform:translateY(32px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.is-in { opacity:1; transform:none; }

/* Hero */
.hero { display:grid; grid-template-columns:minmax(0,1.5fr) minmax(0,.62fr); gap:64px; align-items:end; padding-top:96px; padding-bottom:80px; border-bottom:1px solid var(--c-line); }
.hero-actions { display:flex; flex-wrap:wrap; gap:16px; margin-top:40px; }
.hero-pick { padding:24px; background:var(--c-paper-3); border:1px solid var(--c-line); }
.pick-label { margin:0 0 16px; font-family:var(--f-display); font-size:12px; font-weight:500; letter-spacing:.16em; text-transform:uppercase; color:var(--c-muted); }
.pick-media { display:block; aspect-ratio:4/3; margin-bottom:16px; overflow:hidden; background-size:cover; }
.pick-media img { width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease); }
.pick-media:hover img { transform:scale(1.04); }
.hero-pick h2 { margin-top:8px; font-family:var(--f-display); font-size:22px; line-height:1.15; text-transform:uppercase; }
.hero-pick h2 a { transition:color .25s var(--ease); }
.hero-pick h2 a:hover { color:var(--c-accent); }

/* Section heads */
.section-head { margin-bottom:40px; }
.section-head .kicker { margin-bottom:16px; }

/* Subjects */
.subjects { padding-top:96px; padding-bottom:96px; }
.subject-list { list-style:none; margin:0; padding:0; display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); border-top:1px solid var(--c-ink); }
.subject-list li { border-right:1px solid var(--c-line); border-bottom:1px solid var(--c-line); }
.subject-list li:last-child { border-right:0; }
.subject-list button { position:relative; display:flex; flex-direction:column; align-items:flex-start; gap:12px; width:100%; height:100%; padding:32px 24px; text-align:left; background:none; border:0; cursor:pointer; transition:background-color .3s var(--ease); }
.subject-list button::before { content:''; position:absolute; left:0; top:0; bottom:0; width:3px; background:var(--c-accent); transform:scaleY(0); transform-origin:top; transition:transform .5s var(--ease); }
.subject-list button:hover { background:var(--c-paper-3); }
.subject-list button:hover::before { transform:scaleY(1); }
.subject-num { font-family:var(--f-display); font-size:13px; letter-spacing:.1em; color:var(--c-muted); }
.subject-name { font-family:var(--f-display); font-size:24px; font-weight:600; line-height:1.1; text-transform:uppercase; }
.subject-line { font-size:14px; line-height:1.55; color:var(--c-ink-2); }
.subject-count { margin-top:auto; padding-top:16px; font-family:var(--f-display); font-size:12px; font-weight:500; letter-spacing:.12em; text-transform:uppercase; color:var(--c-accent); }
.subject-count span { display:inline-block; transition:transform .5s var(--ease); }
.subject-list button:hover .subject-count span { transform:translateX(4px); }

/* Catalog */
.catalog { padding-top:96px; padding-bottom:96px; }
.page-catalog .catalog { border-top:1px solid var(--c-line); }
.catalog-head { display:flex; align-items:flex-end; justify-content:space-between; gap:32px; margin-bottom:32px; }
.catalog-head .kicker { margin-bottom:16px; }
.catalog-note { margin:16px 0 0; font-size:15px; color:var(--c-muted); }
.search { display:flex; align-items:center; gap:12px; width:320px; flex:none; padding:0 16px; height:48px; background:var(--c-paper-3); border:1px solid var(--c-line-dark); color:var(--c-muted); transition:border-color .25s var(--ease); }
.search:focus-within { border-color:var(--c-ink); }
.search input { flex:1; min-width:0; height:100%; border:0; background:none; outline:none; color:var(--c-ink); font-size:15px; }
.search input::placeholder { color:var(--c-muted); }
.filters { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:48px; }
.filters button { min-height:40px; padding:0 16px; background:transparent; border:1px solid var(--c-line-dark); font-family:var(--f-display); font-size:12px; font-weight:500; letter-spacing:.1em; text-transform:uppercase; color:var(--c-ink-2); cursor:pointer; transition:background-color .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease); }
.filters button:hover { border-color:var(--c-ink); color:var(--c-ink); }
.filters button[aria-pressed="true"] { background:var(--c-ink); border-color:var(--c-ink); color:var(--c-paper); }
.filters .filter-clear { border-color:transparent; color:var(--c-accent); }

/* Cards (class names pinned by tests/cover.browser.ts) */
.tb-cards { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:48px 32px; }
.tb-card { position:relative; display:flex; flex-direction:column; }
.card-link { display:block; }
.tb-card-cover { position:relative; aspect-ratio:4/3; overflow:hidden; background-size:cover; background-color:var(--c-paper-2); }
.tb-card-cover img { width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease); }
.tb-card:hover .tb-card-cover img { transform:scale(1.04); }
.card-tag { position:absolute; left:0; bottom:0; padding:8px 12px; background:var(--c-paper); }
.card-badge { position:absolute; right:12px; top:12px; padding:4px 8px; background:var(--c-ink); color:var(--c-paper); font-family:var(--f-display); font-size:11px; letter-spacing:.12em; text-transform:uppercase; }
.tb-card h3 { margin-top:24px; font-family:var(--f-display); font-size:22px; line-height:1.15; text-transform:uppercase; transition:color .25s var(--ease); }
.tb-card:hover h3 { color:var(--c-accent); }
.card-sub { display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; margin:8px 0 0; font-size:15px; line-height:1.55; color:var(--c-ink-2); }
.card-intro { align-self:flex-start; margin-top:12px; padding:4px 0; font-size:13px; font-weight:600; color:var(--c-ink); border-bottom:1px solid var(--c-line-dark); transition:border-color .25s var(--ease), color .25s var(--ease); }
.card-intro:hover { color:var(--c-accent); border-color:var(--c-accent); }
.empty { padding:64px 0; text-align:center; color:var(--c-ink-2); }
.empty p { margin:0 0 24px; }
.expand { display:flex; justify-content:center; margin-top:64px; }

/* Dark band */
.band { background:var(--c-ink); color:var(--c-paper); }
.band-in { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); }
.stat { padding:64px 32px; border-left:1px solid rgba(250,247,242,.14); }
.stat:first-child { border-left:0; padding-left:0; }
.stat strong { display:block; font-family:var(--f-display); font-size:clamp(48px,6vw,80px); font-weight:500; line-height:1; color:var(--c-paper); }
.stat span { display:block; margin-top:12px; font-family:var(--f-display); font-size:13px; letter-spacing:.14em; text-transform:uppercase; color:#b9b4aa; }
.stat:nth-child(2) { transition-delay:.08s; }
.stat:nth-child(3) { transition-delay:.16s; }

/* Tagline reveal: words light up on scroll; SSR and reduced motion show full ink */
.tagline { padding-top:128px; padding-bottom:128px; }
.tagline p { max-width:960px; margin:0; font-family:var(--f-display); font-size:clamp(28px,4.4vw,56px); font-weight:500; line-height:1.15; text-transform:uppercase; }
.tagline p.is-live span { color:var(--c-line-dark); transition:color .4s var(--ease); }
.tagline p.is-live span.lit { color:var(--c-ink); }

/* Steps */
.steps { padding-top:96px; padding-bottom:128px; border-top:1px solid var(--c-line); }
.step-list { list-style:none; margin:0; padding:0; display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:40px; }
.step-list li { padding-top:24px; border-top:2px solid var(--c-ink); }
.step-num { display:block; font-family:var(--f-display); font-size:40px; font-weight:500; line-height:1; color:var(--c-accent); }
.step-list h3 { margin-top:24px; font-family:var(--f-display); font-size:22px; text-transform:uppercase; }
.step-list p { margin:12px 0 0; color:var(--c-ink-2); }

/* Information pages */
.info { max-width:800px; padding-top:96px; padding-bottom:96px; }
.info-head { padding-bottom:40px; margin-bottom:40px; border-bottom:1px solid var(--c-ink); }
.info-head .kicker { margin-bottom:16px; }
.info h1 { font-family:var(--f-display); font-weight:600; font-size:clamp(36px,5vw,56px); line-height:1.02; text-transform:uppercase; text-wrap:balance; }
.prose { font-size:17px; line-height:1.75; color:var(--c-ink-2); }
.prose p { margin:0 0 24px; }
.prose h2 { margin:48px 0 16px; font-family:var(--f-display); font-size:24px; text-transform:uppercase; color:var(--c-ink); }
.prose a { color:var(--c-ink); text-decoration:underline; text-decoration-color:var(--c-accent); text-underline-offset:4px; text-decoration-thickness:2px; transition:color .25s var(--ease); }
.prose a:hover { color:var(--c-accent); }
.prose code { padding:2px 8px; background:var(--c-paper-2); font-size:.9em; }
.tb-info-lead p { font-size:21px; line-height:1.6; color:var(--c-ink); }
.info-facts { list-style:none; display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; margin:40px 0; padding:0; }
.info-facts li { padding:24px; background:var(--c-paper-3); border:1px solid var(--c-line); }
.info-facts strong { display:block; font-family:var(--f-display); font-size:22px; font-weight:600; text-transform:uppercase; color:var(--c-accent); }
.info-facts span { display:block; margin-top:8px; font-size:14px; line-height:1.5; }
.contact-block { margin:0 0 48px; padding:32px; background:var(--c-paper-3); border:1px solid var(--c-line); }
.contact-block p { margin:0 0 8px; font-size:14px; color:var(--c-muted); }
.prose .contact-email { font-family:var(--f-display); font-size:clamp(22px,3.4vw,32px); font-weight:500; text-decoration:none; color:var(--c-ink); overflow-wrap:anywhere; }

/* 404 */
.missing { max-width:800px; padding-top:128px; padding-bottom:128px; }
.missing .lede { margin-bottom:40px; }

/* Footer */
.site-foot { background:var(--c-ink); color:#c9c4ba; }
.foot-top { display:grid; grid-template-columns:1.7fr 1fr 1fr 1fr; gap:48px; padding:80px 0 64px; }
.brand-foot .brand-word { color:var(--c-paper); }
.foot-brand p { max-width:360px; margin:24px 0 0; font-size:14px; line-height:1.7; }
.foot-col h2 { margin-bottom:24px; font-family:var(--f-display); font-size:12px; font-weight:500; letter-spacing:.16em; text-transform:uppercase; color:#8f8a81; }
.foot-col ul { list-style:none; margin:0; padding:0; display:grid; gap:12px; }
.foot-col a { font-size:14px; color:#e6e1d8; overflow-wrap:anywhere; transition:color .25s var(--ease); }
.foot-col a:hover, .foot-col a[aria-current="page"] { color:#e7a877; }
.foot-bottom { display:flex; justify-content:space-between; gap:24px; padding:24px 0 32px; border-top:1px solid rgba(250,247,242,.14); font-size:13px; color:#8f8a81; }
.foot-bottom p { margin:0; }

/* ─────────────────────────────────────────────────────────────────────
 * QUIZ PAGES (QuestionPage, Introduction, ResultPage)
 * DO NOT MODIFY — Keep original quiz-reference.css styles intact
 * ───────────────────────────────────────────────────────────────────── */
.quiz-ad {
  width: 100%;
  max-width: 728px;
  height: 280px;
}

.tb-result {
  max-width: 896px;
  margin: auto;
  padding: 40px 24px;
  font-family: system-ui, -apple-system, sans-serif;
  --paper: #faf7f2;
  --paper-2: #f2ece1;
  --paper-3: #fff;
  --ink: #152536;
  --ink-2: #34373c;
  --muted: #6f7277;
  --line: #e2dbcd;
  --line-dark: #cfc6b2;
  --accent: #a56335;
  --accent-dark: #824720;
  --good: #1f7a4c;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --font-display: system-ui, sans-serif;
}

.tb-result > h1 {
  font-size: 26px;
  line-height: 1.3;
  margin: 0 0 28px;
}

.tb-result .btn-result {
  text-decoration: none;
}

.tb-correct-review {
  display: block;
  margin-top: 6px;
}

.tb-review-explanation {
  font-size: 13px;
  color: #65676c;
  line-height: 1.6;
  font-style: italic;
}

.quiz-page--play {
  --font-display: system-ui, sans-serif;
}

@media (max-width: 600px) {
  .tb-result {
    padding: 32px 16px;
  }
}
/* ── end protected quiz block ── */

/* Result-page ad sits between the score card and the detailed review. */
.tb-result > .quiz-ad { margin: 32px auto; }
@media (max-width: 600px) { .tb-result > .quiz-ad { margin: 24px auto; } }

/* Quiz pages keep their original typography and white canvas; header and footer stay on brand */
body.page-question main, body.page-intro main, body.page-result main { padding:48px 0 96px; background:#fff; color:#000; font-family:system-ui,-apple-system,sans-serif; font-size:medium; line-height:normal; -webkit-font-smoothing:auto; }
@media (max-width: 640px) { body.page-question main, body.page-intro main, body.page-result main { padding:24px 0 64px; } }

/* Responsive */
@media (max-width: 1080px) {
  .nav { gap:24px; }
  .subject-list { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .subject-list li:nth-child(2n) { border-right:0; }
  .subject-list li:last-child { border-right:0; }
  .foot-top { grid-template-columns:1fr 1fr; }
  .foot-brand { grid-column:1 / -1; }
}

@media (max-width: 940px) {
  .menu-btn { display:block; }
  .nav { position:fixed; inset:72px 0 0 0; z-index:39; flex-direction:column; align-items:stretch; gap:0; padding:24px 32px 48px; background:var(--c-paper); overflow-y:auto; visibility:hidden; opacity:0; transition:opacity .4s var(--ease), visibility 0s linear .4s; }
  .nav-open .nav { visibility:visible; opacity:1; transition:opacity .4s var(--ease); }
  .nav a { padding:24px 0; border-bottom:1px solid var(--c-line); font-size:28px; font-weight:600; color:var(--c-ink); opacity:0; transform:translateY(16px); transition:opacity .5s var(--ease), transform .5s var(--ease), color .25s var(--ease); }
  .nav a::after { display:none; }
  .nav a[aria-current="page"] { color:var(--c-accent); }
  .nav-open .nav a { opacity:1; transform:none; }
  .nav a:nth-child(2) { transition-delay:.04s; }
  .nav a:nth-child(3) { transition-delay:.08s; }
  .nav a:nth-child(4) { transition-delay:.12s; }
  .nav a:nth-child(5) { transition-delay:.16s; }
  .hero { grid-template-columns:1fr; gap:48px; padding-top:64px; padding-bottom:64px; }
  .hero-pick { max-width:420px; }
  .tb-cards { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .catalog-head { flex-direction:column; align-items:stretch; }
  .search { width:100%; }
  .step-list { grid-template-columns:1fr; gap:32px; }
}

@media (max-width: 640px) {
  .wrap { padding-left:16px; padding-right:16px; }
  .hero { padding-top:48px; padding-bottom:64px; }
  .hero-pick { display:none; }
  .head-in { height:64px; }
  .nav { inset:64px 0 0 0; padding:16px 16px 40px; }
  html { scroll-padding-top:72px; }
  .brand-word { font-size:18px; }
  .lede { font-size:17px; }
  .hero-actions .btn { flex:1 1 100%; }
  .subjects, .catalog, .steps { padding-top:64px; padding-bottom:64px; }
  .subject-list { grid-template-columns:1fr; }
  .subject-list li { border-right:0; }
  .subject-list button { padding:24px 16px; }
  .tb-cards { grid-template-columns:1fr; gap:40px; }
  .band-in { grid-template-columns:1fr; }
  .stat { padding:32px 0; border-left:0; border-top:1px solid rgba(250,247,242,.14); }
  .stat:first-child { border-top:0; }
  .tagline { padding-top:80px; padding-bottom:80px; }
  .info, .missing { padding-top:64px; padding-bottom:64px; }
  .info-facts { grid-template-columns:1fr; }
  .contact-block { padding:24px; }
  .foot-top { grid-template-columns:1fr; gap:40px; padding:64px 0 48px; }
  .foot-bottom { flex-direction:column; gap:8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after { animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; transition-delay:0s !important; scroll-behavior:auto !important; }
  .js .reveal { opacity:1; transform:none; }
}