:root {
  color-scheme: light;
  --ink: #202b27;
  --muted: #596760;
  --paper: #fbfaf6;
  --line: #d9ded8;
  --accent: #176b54;
  --focus: #b05013;
}
* { box-sizing: border-box; }
html { background: var(--paper); color: var(--ink); font: 100%/1.65 system-ui, sans-serif; }
body { margin: 0; min-width: 18rem; }
a { color: #145c49; text-decoration-thickness: .08em; text-underline-offset: .18em; }
a:hover { color: #0b4032; }
a:focus-visible, [tabindex="-1"]:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 2px; }
.skip-link { position: absolute; z-index: 2; left: 1rem; top: -5rem; padding: .6rem 1rem; background: white; }
.skip-link:focus { top: 1rem; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .9rem clamp(1rem, 5vw, 4rem); border-bottom: 1px solid var(--line); background: #fff; }
.brand { font-size: 1.35rem; font-weight: 750; letter-spacing: -.03em; text-decoration: none; color: var(--ink); }
.site-header nav { display: flex; flex-wrap: wrap; gap: clamp(.5rem, 2vw, 1.25rem); }
.account-identity { color: var(--muted); overflow-wrap: anywhere; }
.sign-out-form { display: inline; margin: 0; }
.sign-out-form button { padding: .2rem .45rem; color: #145c49; background: transparent; border: 0; font: inherit; text-decoration: underline; text-underline-offset: .18em; cursor: pointer; }
.auth-panel { width: min(100%, 34rem); margin: 0 auto; padding: clamp(1.25rem, 5vw, 2.5rem); background: #fff; border: 1px solid var(--line); border-radius: .5rem; }
.auth-panel h1 { font-size: clamp(1.8rem, 6vw, 2.6rem); }
.form-field { display: grid; gap: .35rem; margin: 1.2rem 0; }
.form-field input { width: 100%; min-height: 2.8rem; padding: .55rem .7rem; border: 1px solid #7a8980; border-radius: .25rem; color: var(--ink); background: #fff; font: inherit; }
.form-field input:focus-visible, button:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.form-errors { color: #8b251c; margin: .4rem 0; }
.form-errors ul { margin: 0; padding-left: 1.2rem; }
.auth-submit { border: 0; font: inherit; cursor: pointer; }
main { width: min(100% - 2rem, 70rem); min-height: 70vh; margin: 0 auto; padding: clamp(1.5rem, 5vw, 4rem) 0; }
h1, h2 { line-height: 1.2; letter-spacing: -.025em; }
h1 { max-width: 18ch; margin: .25rem 0 1.2rem; font-size: clamp(2rem, 6vw, 3.4rem); }
h2 { margin-top: 2.5rem; font-size: clamp(1.35rem, 3vw, 1.8rem); }
p { max-width: 68ch; }
.welcome { padding: clamp(1.5rem, 6vw, 4rem); margin-bottom: 3rem; background: #eef3ed; border-radius: .5rem; }
.welcome > p { font-size: 1.1rem; }
.eyebrow { color: var(--muted); font-size: .85rem !important; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.button-link { display: inline-block; padding: .7rem 1.05rem; border-radius: .3rem; color: white; background: var(--accent); font-weight: 650; text-decoration: none; }
.card-list, .lesson-list { display: grid; gap: .8rem; padding-left: 1.5rem; }
.card-list li, .lesson-list li { padding: 1rem 1.15rem; border: 1px solid var(--line); border-radius: .35rem; background: #fff; }
.card-list li > a, .lesson-list li > a { font-weight: 650; font-size: 1.08rem; }
.card-list p, .lesson-list p { margin-bottom: 0; color: var(--muted); }
.reading { max-width: 46rem; margin-inline: auto; }
.reading h1 { max-width: 24ch; }
.lead { color: #35463f; font-size: 1.2rem; line-height: 1.65; }
.lesson-body { margin-top: 2rem; }
.lesson-body p { margin: 0 0 1.5em; font-size: clamp(1.08rem, 2.5vw, 1.2rem); line-height: 1.85; overflow-wrap: anywhere; }
.empty-state { padding: 1rem 1.2rem; border-left: .25rem solid #9aa99f; background: #f0f2ed; color: #34443c; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: 2rem; color: var(--muted); font-size: .92rem; }
.breadcrumbs > * + *::before { content: "›"; margin-right: .55rem; color: #75847b; }
.breadcrumbs [aria-current="page"] { color: var(--ink); }
.lesson-navigation { display: flex; justify-content: space-between; gap: 1rem; margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.lesson-navigation a { max-width: 48%; }
.lesson-navigation a:last-child { margin-left: auto; text-align: right; }
.return-link { margin-top: 2rem; }
.site-footer { padding: 1rem clamp(1rem, 5vw, 4rem); border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.site-footer p { margin: 0; }
@media (max-width: 32rem) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .site-header nav { width: 100%; }
  .lesson-navigation { flex-direction: column; }
  .lesson-navigation a { max-width: 100%; }
  .lesson-navigation a:last-child { text-align: left; }
}

.reading-column { width: min(100%, 46rem); margin-inline: auto; }
.reading-column form { display: grid; gap: .55rem; margin: 1.5rem 0; }
.reading-column input:not([type=checkbox]):not([type=radio]), .reading-column textarea, .reading-column select { width: 100%; min-height: 2.8rem; padding: .55rem .7rem; border: 1px solid #7a8980; border-radius: .25rem; color: var(--ink); background: #fff; font: inherit; }
.reading-column textarea { min-height: 6rem; resize: vertical; }
.reading-column label { font-weight: 600; }
.reading-column button { width: fit-content; min-height: 2.75rem; padding: .55rem .9rem; border: 1px solid #145c49; border-radius: .25rem; color: #fff; background: #176b54; font: inherit; cursor: pointer; }
.reading-column button:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.reading-column blockquote { margin: 1rem 0; padding-left: 1rem; border-left: .25rem solid #9aa99f; }

/* 6B.11: touch-friendly targets and consistent buttons outside .reading-column */
.site-header nav { align-items: center; }
.site-header nav a { display: inline-flex; align-items: center; min-height: 2.75rem; padding-inline: .25rem; }
.sign-out-form button { min-height: 2.75rem; }
.reading button, .lesson-complete-form button { min-height: 2.75rem; padding: .55rem .95rem; border: 1px solid #145c49; border-radius: .25rem; color: #fff; background: var(--accent); font: inherit; cursor: pointer; }
.reading button:focus-visible, .lesson-complete-form button:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.reading form, .lesson-complete-form { margin: 1.5rem 0; }
.lesson-complete { display: inline-block; margin: 1.5rem 0; padding: .6rem .9rem; border-radius: .3rem; background: #eef3ed; color: #12503f; font-weight: 650; }
@media (max-width: 32rem) {
  .reading button, .reading-column button, .lesson-complete-form button { width: 100%; }
}
/* patch12 covers */
.cover-image { display: block; width: 100%; height: auto; border-radius: .5rem; margin: 0 0 1.5rem; background: #e8eee9; }
.cover-thumb { display: block; width: 100%; max-width: 24rem; height: auto; border-radius: .4rem; margin: 0 0 .7rem; background: #e8eee9; }