/* marksentell.com — palette taken from the Giving Account cover (ledger paper, ink green, margin red) */
:root {
  --paper: #F5F0E4;
  --paper-2: #ECE4D2;
  --card: #FBF8F1;
  --ink: #1F3A31;
  --ink-2: #2E4A40;
  --text: #23302B;
  --muted: #5D6A64;
  --rule: #CCD5D2;
  --margin: #A8433A;
  --focus: #A8433A;
  --serif-display: "EB Garamond", Georgia, serif;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: 1120px;
  --measure: 40rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font: 400 1.125rem/1.65 var(--serif);
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--ink); text-decoration-color: color-mix(in srgb, var(--ink) 40%, transparent); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--margin); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }

h1, h2, h3, h4 { font-family: var(--serif-display); color: var(--ink); font-weight: 500; line-height: 1.15; margin: 0 0 .5em; letter-spacing: -0.005em; }
h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.3rem); margin-top: 1.6em; }
h3 { font-size: 1.45rem; margin-top: 1.4em; }
p { margin: 0 0 1.1em; }
.muted { color: var(--muted); }
.small { font-size: .95rem; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--card); padding: 8px 12px; z-index: 10; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } }
.narrow { max-width: calc(var(--measure) + 48px); }

.eyebrow { font: 600 .8rem/1.2 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--margin); margin-bottom: .9rem; display: block; }

/* Header */
.site-header { border-bottom: 1px solid var(--rule); background: var(--paper); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
.brand { font: 500 1.35rem/1 var(--serif-display); letter-spacing: .12em; text-transform: uppercase; color: var(--ink); text-decoration: none; margin: 0; }
.site-header nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 20px; margin: 0; padding: 0; }
.site-header nav a { font: 600 .95rem/1 var(--sans); color: var(--ink-2); text-decoration: none; padding: 6px 0; border-bottom: 2px solid transparent; }
.site-header nav a:hover, .site-header nav a[aria-current] { border-bottom-color: var(--margin); }

/* Buttons */
.btn { display: inline-block; font: 600 1rem/1 var(--sans); background: var(--ink); color: var(--paper); padding: 14px 22px; border-radius: 4px; text-decoration: none; border: 2px solid var(--ink); }
.btn:hover { background: var(--ink-2); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--paper-2); }
.btn-small { padding: 10px 16px; font-size: .92rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 1.4rem 0; }

/* Ledger-paper hero */
.ledger {
  background-color: var(--paper);
  background-image:
    linear-gradient(90deg, transparent 0, transparent 46px, rgba(168,67,58,.55) 46px, rgba(168,67,58,.55) 47px, transparent 47px, transparent 50px, rgba(168,67,58,.55) 50px, rgba(168,67,58,.55) 51px, transparent 51px),
    repeating-linear-gradient(180deg, transparent 0, transparent 35px, rgba(120,145,140,.28) 35px, rgba(120,145,140,.28) 36px);
  border-bottom: 1px solid var(--rule);
}
@media (max-width: 700px) { .ledger { background-image: repeating-linear-gradient(180deg, transparent 0, transparent 35px, rgba(120,145,140,.22) 35px, rgba(120,145,140,.22) 36px); } }
.hero { padding-top: 72px; padding-bottom: 80px; }
.hero-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 56px; align-items: center; }
.hero-grid .cover { max-width: 340px; justify-self: center; }
.hero .lede { font-size: 1.3rem; max-width: 34rem; }
@media (max-width: 820px) {
  .hero { padding-top: 44px; padding-bottom: 52px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-grid .cover { max-width: 220px; order: -1; justify-self: start; }
}
.cover { box-shadow: 0 1px 0 rgba(0,0,0,.05), 0 18px 40px -18px rgba(31,58,49,.55); border-radius: 2px; }

.pull { font: italic 400 1.55rem/1.35 var(--serif-display); color: var(--ink); border-left: 3px solid var(--margin); padding-left: 18px; margin: 0 0 1.4rem; }

/* Sections */
.section { padding: 64px 0; }
.section-alt { background: var(--paper-2); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.section h2:first-child { margin-top: 0; }
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.cols-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
@media (max-width: 820px) { .cols-2, .cols-3 { grid-template-columns: 1fr; gap: 28px; } .section { padding: 44px 0; } }

.card { background: var(--card); border: 1px solid var(--rule); border-radius: 6px; padding: 24px; }
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
a.card { display: block; text-decoration: none; color: inherit; transition: border-color .15s, transform .15s; }
a.card:hover { border-color: var(--ink); transform: translateY(-2px); }

.checklist { list-style: none; padding: 0; margin: 0 0 1.2rem; }
.checklist li { padding-left: 30px; position: relative; margin-bottom: .6rem; }
.checklist li::before { content: ""; position: absolute; left: 4px; top: .55em; width: 12px; height: 7px; border-left: 2px solid var(--margin); border-bottom: 2px solid var(--margin); transform: rotate(-45deg); }

/* Book list */
.book-row { display: grid; grid-template-columns: 180px 1fr; gap: 32px; align-items: start; padding: 32px 0; border-top: 1px solid var(--rule); }
.book-row:first-child { border-top: 0; }
@media (max-width: 600px) { .book-row { grid-template-columns: 110px 1fr; gap: 18px; } }

/* Chapter list */
.chapter-list { list-style: none; padding: 0; margin: 0; counter-reset: none; }
.chapter-list li { border-top: 1px solid var(--rule); }
.chapter-list li:last-child { border-bottom: 1px solid var(--rule); }
.chapter-list a { display: grid; grid-template-columns: 56px minmax(0,1fr) auto; gap: 16px; align-items: baseline; padding: 18px 4px; text-decoration: none; color: inherit; }
.chapter-list a:hover { background: var(--card); }
.chapter-list .num { font: 500 1.6rem/1 var(--serif-display); color: var(--margin); }
.chapter-list .ch-title { font: 500 1.35rem/1.2 var(--serif-display); color: var(--ink); display: block; }
.chapter-list .ch-sub { color: var(--muted); font-size: .98rem; display: block; margin-top: 4px; }
.chapter-list .ref { font: 600 .82rem/1.2 var(--sans); color: var(--muted); letter-spacing: .04em; white-space: nowrap; }
@media (max-width: 600px) { .chapter-list a { grid-template-columns: 38px minmax(0,1fr); } .chapter-list .ref { grid-column: 2; white-space: normal; } }
.part-label { font: 600 .8rem/1.2 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 2.2rem 0 .6rem; }

/* Article */
.article-head { padding: 56px 0 28px; }
.article-head .meta { font: 400 .95rem/1.4 var(--sans); color: var(--muted); }
.prose { max-width: var(--measure); }
.prose h2 { font-size: 1.85rem; }
.prose blockquote { margin: 1.6rem 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--margin); font-style: italic; color: var(--ink-2); }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-bottom: .45em; }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 2.4rem 0; }
.article-grid { display: grid; grid-template-columns: minmax(0, var(--measure)) 280px; gap: 64px; padding-bottom: 72px; }
.article-grid aside { position: relative; }
.aside-sticky { position: sticky; top: 24px; display: grid; gap: 20px; }
@media (max-width: 960px) { .article-grid { grid-template-columns: 1fr; gap: 36px; } .aside-sticky { position: static; } }

.big-idea { background: var(--card); border: 1px solid var(--rule); border-left: 4px solid var(--ink); padding: 20px 22px; border-radius: 4px; margin: 0 0 2rem; }
.big-idea .eyebrow { margin-bottom: .4rem; }
.big-idea p { margin: 0; font: 400 1.3rem/1.4 var(--serif-display); color: var(--ink); }

.box { background: var(--card); border: 1px solid var(--rule); border-radius: 6px; padding: 22px 24px; margin: 2rem 0; }
.box h2, .box h3 { margin-top: 0; font-size: 1.5rem; }
.box ol, .box ul { margin-bottom: 0; }

.book-cta { display: grid; grid-template-columns: 84px 1fr; gap: 16px; align-items: start; }
.book-cta p { font-size: .98rem; margin-bottom: .6rem; }
.book-cta .t { font: 500 1.2rem/1.2 var(--serif-display); color: var(--ink); margin-bottom: .3rem; }

.pager { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--rule); padding-top: 20px; margin-top: 2.4rem; font-family: var(--sans); }
.pager a { text-decoration: none; max-width: 48%; }
.pager small { display: block; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; font-size: .72rem; }

/* Post list */
.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li { padding: 22px 0; border-top: 1px solid var(--rule); }
.post-list h3 { margin: .2rem 0 .35rem; font-size: 1.5rem; }
.post-list h3 a { text-decoration: none; }
.post-list p { margin: 0; color: var(--muted); }
.tag { font: 600 .74rem/1 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--margin); }

/* Signup */
.signup-title { font: 500 1.25rem/1.2 var(--serif-display); color: var(--ink); margin-bottom: .3rem; }
.signup-row { display: flex; gap: 8px; flex-wrap: wrap; }
.signup input { flex: 1 1 200px; font: 400 1rem var(--sans); padding: 12px 14px; border: 1px solid var(--rule); border-radius: 4px; background: #fff; color: var(--text); }
.signup button { font: 600 1rem var(--sans); padding: 12px 18px; border: 0; border-radius: 4px; background: var(--ink); color: var(--paper); cursor: pointer; }

/* Footer */
.site-footer { background: var(--ink); color: #DCE3DF; padding: 48px 0 24px; margin-top: 0; }
.site-footer a { color: #F5F0E4; }
.site-footer .brand { color: #F5F0E4; }
.site-footer .muted, .site-footer .signup .muted { color: #B5C2BC; }
.site-footer .signup-title { color: #F5F0E4; }
.site-footer .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.site-footer .signup button { background: var(--paper); color: var(--ink); }
.footer-grid { display: grid; grid-template-columns: 1fr 1.4fr 1fr; gap: 40px; }
.footer-links { list-style: none; padding: 0; margin: 0; font: 400 .98rem/1.9 var(--sans); }
.fineprint { font: 400 .82rem/1.5 var(--sans); color: #9FB0A8; border-top: 1px solid rgba(255,255,255,.12); padding-top: 18px; margin-top: 36px; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }

/* Tables */
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 1rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font: 600 .8rem/1.2 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

/* Printables */
.printable { background: #fff; border: 1px solid var(--rule); padding: 40px 44px; max-width: 760px; margin: 0 auto 2rem; }
.printable h1 { font-size: 2.2rem; }
.write-lines { border-bottom: 1px solid var(--rule); height: 30px; }
.print-bar { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin: 28px 0; }
@media (max-width: 600px) { .printable { padding: 24px 18px; } }
@media print {
  .site-header, .site-footer, .print-bar, .no-print { display: none !important; }
  body { background: #fff; font-size: 12pt; }
  .printable { border: 0; padding: 0; max-width: none; }
  a { text-decoration: none; }
}