:root {
  --accent: #5a7a6c;
  --accent-dark: #4a6659;
  --accent-pale: #e8eeea;
  --ink: #1a1a18;
  --paper: #faf8f4;
  --tint-1: #f4f0e8;
  --tint-2: #efeae0;
  --line: #d9d2c4;
  --font-display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --font-sans: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; border-radius: 0; }

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--tint-2);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent-pale); color: var(--ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- Toolbar (screen only) ---------- */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--ink);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
  padding: 0.7rem 1.25rem;
  flex-wrap: wrap;
}
.toolbar .brand {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--paper);
  text-decoration: none;
}
.toolbar .book-nav { display: flex; gap: 1.1rem; flex-wrap: wrap; }
.toolbar .book-nav a {
  color: var(--paper);
  opacity: 0.6;
  font-size: 0.85rem;
  text-decoration: none;
  padding: 0.15rem 0;
  border-bottom: 2px solid transparent;
}
.toolbar .book-nav a:hover { opacity: 1; }
.toolbar .book-nav a[aria-current="page"] {
  opacity: 1;
  border-bottom-color: var(--accent);
}
.toolbar .actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.toolbar .save-note { font-size: 0.78rem; opacity: 0.75; }
.toolbar button {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.9rem;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.55rem 1.2rem;
  cursor: pointer;
  transition: background-color 200ms ease-out;
}
.toolbar button:hover { background: var(--accent-dark); }
.toolbar .clear-link {
  background: none;
  border: none;
  color: var(--paper);
  opacity: 0.6;
  font-size: 0.78rem;
  text-decoration: underline;
  cursor: pointer;
  padding: 0;
}
.toolbar .clear-link:hover { opacity: 1; background: none; }

/* ---------- Page cards ---------- */
.book { max-width: 820px; margin: 0 auto; padding: 2rem 1rem 4rem; }

.page {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 3.25rem 3rem;
  margin: 0 0 2rem;
  position: relative;
}
@media (max-width: 640px) {
  .page { padding: 2rem 1.25rem; }
}

/* ---------- Typography ---------- */
.kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin: 0 0 1rem;
}
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.12;
  margin: 0 0 1.1rem;
}
h1 { font-size: 2.9rem; }
h2 { font-size: 2.1rem; }
h3 { font-size: 1.35rem; margin-top: 2rem; }
p { margin: 0 0 1rem; }
.lede { font-size: 1.15rem; }
.quiet { color: #5b5a54; font-size: 0.92rem; }

.rule {
  border: none;
  border-top: 2px solid var(--accent);
  width: 3.5rem;
  margin: 0 0 1.6rem;
}

ul.plain { list-style: none; padding: 0; margin: 0 0 1rem; }
ul.plain li { padding: 0.28rem 0 0.28rem 1.2rem; position: relative; }
ul.plain li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 0.5rem;
  height: 2px;
  background: var(--accent);
}

/* ---------- Callouts ---------- */
.callout {
  background: var(--accent-pale);
  border-left: 3px solid var(--accent);
  padding: 1.1rem 1.4rem;
  margin: 1.6rem 0;
}
.callout p { margin: 0; }
.callout p + p { margin-top: 0.6rem; }
.callout .kicker { margin-bottom: 0.5rem; }

/* ---------- Flow diagrams ---------- */
.flow {
  background: var(--tint-1);
  border: 1px solid var(--line);
  padding: 1.3rem 1.5rem;
  margin: 1.6rem 0;
  font-size: 0.95rem;
}
.flow ol { list-style: none; margin: 0; padding: 0; }
.flow li { padding: 0.22rem 0; }
.flow li + li::before {
  content: "\2193";
  display: block;
  color: var(--accent);
  font-size: 0.85rem;
  line-height: 1;
  margin: 0 0 0.22rem 0.1rem;
}

/* ---------- Figures ---------- */
figure { margin: 1.8rem 0; }
figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}
figure.framed img { border: 2px solid var(--accent); }
figcaption {
  font-size: 0.82rem;
  color: #5b5a54;
  margin-top: 0.6rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--accent);
}
.fig-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
.fig-pair figure { margin: 1.8rem 0 0.5rem; }
@media (max-width: 640px) { .fig-pair { grid-template-columns: 1fr; } }

/* ---------- Form fields ---------- */
label.field { display: block; margin: 1.1rem 0 0; font-weight: 500; font-size: 0.95rem; }
input[type="text"], input[type="number"] {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--ink);
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--ink);
  background: transparent;
  padding: 0.45rem 0.1rem;
  margin-top: 0.15rem;
}
input.short { max-width: 10rem; }
textarea {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--ink);
  width: 100%;
  min-height: 6.5rem;
  border: 1px solid var(--line);
  background: #fff;
  padding: 0.7rem 0.8rem;
  margin-top: 0.4rem;
  resize: vertical;
  line-height: 1.8;
  background-image: repeating-linear-gradient(to bottom, transparent 0, transparent 1.75rem, var(--tint-2) 1.75rem, var(--tint-2) calc(1.75rem + 1px));
  background-attachment: local;
}
textarea.tall { min-height: 9rem; }

/* Choice chips (Yes / No / Sometimes etc.) */
.choices { display: flex; gap: 1.4rem; flex-wrap: wrap; margin: 0.5rem 0 1rem; }
.choice { display: inline-flex; align-items: center; gap: 0.5rem; cursor: pointer; font-size: 0.95rem; }
.choice input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.choice .box {
  width: 1.05rem;
  height: 1.05rem;
  border: 1.5px solid var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  line-height: 1;
  color: var(--accent-dark);
  flex: none;
}
.choice input:checked + .box::after { content: "\2715"; font-weight: 700; }
.choice input:focus-visible + .box { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; margin: 1.4rem 0; }
th, td { border: 1px solid var(--line); padding: 0.6rem 0.7rem; text-align: left; vertical-align: top; font-size: 0.93rem; }
th {
  background: var(--tint-1);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
td input[type="text"] { border-bottom: none; padding: 0.15rem 0; }
.score-table td.opt { text-align: center; width: 5.5rem; }
.score-table .choice { justify-content: center; }

/* ---------- Score ---------- */
.score-total {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  background: var(--tint-1);
  border: 1px solid var(--line);
  padding: 1.2rem 1.5rem;
  margin: 1.6rem 0 0;
}
.score-total .label { font-weight: 700; font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; }
.score-total .value { font-family: var(--font-display); font-size: 2.4rem; color: var(--accent-dark); }
.score-total .value .blank { display: inline-block; min-width: 3.2rem; border-bottom: 1.5px solid var(--ink); text-align: center; }

.band { border: 1px solid var(--line); border-left: 3px solid var(--accent); padding: 1.1rem 1.4rem; margin: 1.2rem 0; }
.band h3 { margin: 0 0 0.3rem; }
.band .kicker { margin-bottom: 0.35rem; }
.band p { margin: 0.3rem 0 0; }

/* ---------- Lesson title pages ---------- */
.lesson-title { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.lesson-title .kicker { color: var(--accent-pale); }
.lesson-title h1 { color: var(--paper); font-size: 3.2rem; }
.lesson-title .rule { border-color: var(--accent); width: 5rem; }
.lesson-title .num {
  font-family: var(--font-display);
  font-size: 7rem;
  line-height: 1;
  color: var(--accent);
  display: block;
  margin-bottom: 1.2rem;
}
.lesson-title p { color: #d8d5cd; max-width: 34rem; }

.cover { text-align: left; }
.cover .kicker { margin-bottom: 2.2rem; }
.cover h1 { font-size: 3.4rem; margin-bottom: 0.4rem; }
.cover .sub { font-family: var(--font-display); font-style: italic; font-size: 1.5rem; color: var(--accent-dark); margin-bottom: 2rem; }

.steps { counter-reset: step; list-style: none; margin: 1.5rem 0; padding: 0; }
.steps li { counter-increment: step; display: flex; gap: 1.1rem; padding: 0.9rem 0; border-top: 1px solid var(--line); }
.steps li:last-child { border-bottom: 1px solid var(--line); }
.steps li::before {
  content: counter(step);
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--accent);
  line-height: 1.1;
  flex: none;
  width: 1.6rem;
}
.steps strong { display: block; }

.next-step { margin-top: 2.2rem; border-top: 1px solid var(--line); padding-top: 1.3rem; }
.next-step .kicker { margin-bottom: 0.4rem; }
.next-step p { margin: 0; }

/* ---------- Contents list (start page) ---------- */
.contents { list-style: none; margin: 1.5rem 0; padding: 0; }
.contents li { border-top: 1px solid var(--line); }
.contents li:last-child { border-bottom: 1px solid var(--line); }
.contents a {
  display: flex;
  gap: 1.1rem;
  align-items: baseline;
  padding: 1rem 0.4rem;
  color: var(--ink);
  text-decoration: none;
  transition: background-color 150ms ease-out;
}
.contents a:hover { background: var(--tint-1); }
.contents .c-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--accent);
  flex: none;
  width: 1.6rem;
}
.contents .c-title { font-weight: 500; }
.contents .c-sub { display: block; font-weight: 400; font-size: 0.88rem; color: #5b5a54; }
.contents .c-go { margin-left: auto; color: var(--accent-dark); font-size: 0.88rem; flex: none; }

/* ---------- Pager (between-page navigation) ---------- */
.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 0 0 2rem;
}
.pager a {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 1.1rem 1.4rem;
  color: var(--ink);
  text-decoration: none;
  transition: border-color 150ms ease-out;
}
.pager a:hover { border-color: var(--accent); }
.pager .dir {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 0.25rem;
}
.pager .pg-title { font-family: var(--font-display); font-size: 1.2rem; }
.pager a.next { text-align: right; }
.pager a.next-primary { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.pager a.next-primary .dir { color: var(--accent-pale); }
.pager a.next-primary:hover { border-color: var(--accent); }
.pager .spacer { visibility: hidden; }
@media (max-width: 640px) {
  .pager { grid-template-columns: 1fr; }
  .pager .spacer { display: none; }
  .pager a.next { text-align: left; }
}

/* ---------- Results page ---------- */
.result-hero {
  display: flex;
  align-items: baseline;
  gap: 1.4rem;
  flex-wrap: wrap;
  background: var(--tint-1);
  border: 1px solid var(--line);
  padding: 1.4rem 1.6rem;
  margin: 1.6rem 0;
}
.result-hero .big {
  font-family: var(--font-display);
  font-size: 3.6rem;
  line-height: 1;
  color: var(--accent-dark);
}
.result-hero .big small { font-size: 1.6rem; color: var(--ink); }
.result-hero .band-name { font-family: var(--font-display); font-size: 1.5rem; }
.result-hero .band-desc { flex-basis: 100%; margin: 0.4rem 0 0; color: #5b5a54; font-size: 0.95rem; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
  gap: 1rem;
  margin: 1.4rem 0;
}
.stat {
  background: var(--tint-1);
  border: 1px solid var(--line);
  padding: 1rem 1.2rem;
}
.stat .stat-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin: 0 0 0.35rem;
}
.stat .stat-value {
  font-family: var(--font-display);
  font-size: 1.9rem;
  line-height: 1.1;
  margin: 0;
}

.prio { list-style: none; counter-reset: prio; margin: 1.4rem 0; padding: 0; }
.prio li {
  counter-increment: prio;
  display: flex;
  gap: 1.2rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  padding: 1.1rem 1.3rem;
  margin: 0 0 0.9rem;
  background: var(--paper);
}
.prio li::before {
  content: counter(prio);
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1;
  color: var(--accent);
  flex: none;
  width: 1.8rem;
}
.prio h3 { margin: 0 0 0.35rem; font-size: 1.25rem; }
.prio p { margin: 0.3rem 0 0; font-size: 0.95rem; }
.prio .why { color: #5b5a54; }
.chip {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.15rem 0.55rem;
  border: 1px solid var(--ink);
  margin-left: 0.6rem;
  vertical-align: middle;
}
.chip.notyet { background: var(--ink); color: var(--paper); }
.chip.sortof { background: var(--tint-1); }

.working { list-style: none; margin: 1rem 0; padding: 0; }
.working li { padding: 0.35rem 0 0.35rem 1.6rem; position: relative; }
.working li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  top: 0.1rem;
  color: var(--accent-dark);
  font-weight: 700;
}

.answers-group { margin: 1.8rem 0; }
.answers-group h3 { margin-top: 0; }
.answers-group dl { margin: 0.8rem 0 0; }
.answers-group dt {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin: 1rem 0 0.2rem;
}
.answers-group dd {
  margin: 0;
  padding: 0.2rem 0 0.2rem 0.9rem;
  border-left: 2px solid var(--line);
  white-space: pre-wrap;
}

.notice {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--tint-1);
  padding: 1.1rem 1.4rem;
  margin: 1.4rem 0;
}
.notice p { margin: 0; }
.notice a { color: var(--accent-dark); }

/* ---------- Switch Test CTA ---------- */
.cta-panel {
  background: var(--ink);
  color: var(--paper);
  padding: 2.2rem 2rem;
  margin-top: 2.2rem;
}
.cta-panel .kicker { color: var(--accent-pale); }
.cta-panel h3 {
  color: var(--paper);
  font-size: 1.9rem;
  margin: 0 0 1rem;
}
.cta-panel p { color: #d8d5cd; }
.cta-btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 1rem 2rem;
  margin-top: 0.6rem;
  cursor: pointer;
  transition: background-color 200ms ease-out;
}
.cta-btn:hover { background: var(--accent-dark); }

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(26, 26, 24, 0.72);
  padding: 2rem 1rem;
  overflow-y: auto;
}
.modal-overlay.open { display: block; }
.modal {
  background: var(--paper);
  max-width: 620px;
  margin: 0 auto;
  padding: 1rem;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--ink);
  color: var(--paper);
  border: none;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0.55rem 0.8rem;
  cursor: pointer;
}
.modal-close:hover { background: var(--accent-dark); }
.modal iframe { display: block; width: 100%; height: 770px; border: none; }
@media (max-width: 640px) {
  .modal-overlay { padding: 0.5rem; }
}

.print-only { display: none; }

.footer-mark {
  text-align: center;
  font-size: 0.78rem;
  color: #5b5a54;
  letter-spacing: 0.08em;
  padding-bottom: 2rem;
}

/* ---------- Print ---------- */
@page { size: A4; margin: 13mm 14mm; }
@media print {
  body { background: #fff; font-size: 11.5pt; }
  .toolbar, .pager { display: none; }
  .book { max-width: none; padding: 0; margin: 0; }
  .page {
    border: none;
    margin: 0;
    padding: 0 0 1rem;
    break-after: page;
    page-break-after: always;
  }
  .page:last-of-type { break-after: auto; page-break-after: auto; }
  .lesson-title { background: #fff; color: var(--ink); padding-top: 3rem; }
  .lesson-title h1 { color: var(--ink); }
  .lesson-title p { color: var(--ink); }
  .lesson-title .kicker { color: var(--accent-dark); }
  .cta-panel { background: #fff; color: var(--ink); border: 1px solid var(--ink); }
  .cta-panel h3, .cta-panel p { color: var(--ink); }
  .cta-btn, .modal-overlay { display: none; }
  .print-only { display: block; }
  .callout, .flow, .score-total, th, .band, .stat, .result-hero, .prio li, .notice {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  textarea { background-image: none; border: 1px solid var(--ink); }
  figure, .callout, .flow, table, .band, .prio li, .stat-grid { break-inside: avoid; page-break-inside: avoid; }
  figure img { max-height: 88mm; width: auto; max-width: 100%; margin: 0 auto; }
  a { color: inherit; text-decoration: none; }
}