/* A tear-off day calendar rather than an app dashboard: paper white, ink, calendar red for
   "today", the age in days as the big numeral. No gradients, shadows or stock illustrations. */
:root {
  --paper: #f1f2ef; --sheet: #ffffff; --ink: #16181d; --muted: #5d626b; --rule: #d3d6d1;
  --accent: #c0141b; --accent-ink: #ffffff; --soft: #e6e8e3;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "DejaVu Serif", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #121418; --sheet: #1a1d22; --ink: #eceee9; --muted: #9aa0a8; --rule: #2e3239; --soft: #1f2227;
          --accent: #ff5a5f; --accent-ink: #121418; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 18px/1.55 var(--serif); }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }

/* Masthead */
.top { max-width: 720px; margin: 0 auto; padding: 18px 20px 0; display: grid; grid-template-columns: 1fr auto; align-items: end;
       border-bottom: 3px double var(--rule); padding-bottom: 10px; }
.brand { font: 600 22px/1 var(--serif); letter-spacing: .01em; text-decoration: none; }
.dateline { grid-column: 1 / -1; margin: 6px 0 0; font: 12px/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.top nav { font: 14px var(--sans); }
.top nav a { margin-left: 16px; color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--ink); }
main { max-width: 720px; margin: 0 auto; padding: 8px 20px 56px; }
.foot { max-width: 720px; margin: 0 auto; padding: 20px 20px 40px; color: var(--muted); font: 13px/1.6 var(--sans); border-top: 1px solid var(--rule); }

/* Type */
.hero h1, .entry h1, .entry h2.headline { font: 600 clamp(32px, 6.4vw, 52px)/1.08 var(--serif); letter-spacing: -.012em; margin: 32px 0 14px; }
.hero p { color: var(--muted); font-size: 19px; margin: 0 0 22px; max-width: 34em; }
h2 { font: 600 14px/1.2 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--muted);
     margin: 40px 0 6px; padding-bottom: 8px; border-bottom: 1px solid var(--rule); }
h3 { font: 600 13px/1.2 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 0 0 10px; }
.note { color: var(--muted); font: 14px/1.5 var(--sans); }
.badge { display: block; font: 700 12px/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin: 28px 0 0; }

/* Forms and buttons: rectangular, ink on paper */
.dob { display: flex; gap: 8px; flex-wrap: wrap; }
.dob input, .join input { flex: 1 1 220px; font: 18px var(--sans); padding: 12px 14px; border: 1px solid var(--ink); border-radius: 2px;
  background: var(--sheet); color: var(--ink); min-height: 50px; }
.btn { appearance: none; border: 1px solid var(--ink); border-radius: 2px; padding: 12px 20px; font: 600 16px var(--sans); cursor: pointer;
  min-height: 50px; background: var(--ink); color: var(--paper); text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.btn.secondary { background: transparent; color: var(--ink); }
.btn:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn:focus-visible, input:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.join { display: grid; gap: 6px; max-width: 380px; }
.join label { font: 13px var(--sans); color: var(--muted); margin-top: 8px; }
.join .btn { margin-top: 14px; }

/* Lists of milestones: entries separated by rules, like an almanac */
.list { display: block; }
.item { display: block; padding: 20px 0 22px; border-bottom: 1px solid var(--rule); text-decoration: none; }
.item .badge { display: inline-block; margin: 0 0 10px; font-size: 11px; padding: 4px 7px 3px; border: 1px solid currentColor; }
.item .h { font: 500 20px/1.38 var(--serif); }
.item:hover .h { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.item .s { color: var(--muted); font: 14px/1.5 var(--sans); margin-top: 8px; }
.item .when, .entry .when { font: 600 13px var(--sans); letter-spacing: .04em; text-transform: uppercase; color: var(--accent); margin: 0 0 6px; }
.item a.h { display: block; color: var(--ink); text-decoration: none; }
.item .share { margin: 12px 0 0; }
.signup h2 { margin-top: 0; }
#freq { font: 16px var(--sans); padding: 10px; min-height: 44px; margin: 6px 0 14px; display: block; }
/* Today's milestones lead the page: larger type and the red rule */
.list.today .item { border-left: 4px solid var(--accent); padding-left: 16px; }
.list.today .item .h { font: 600 clamp(24px, 6vw, 30px)/1.25 var(--serif); }
h2 + .list .item:first-child { padding-top: 14px; }
/* Home: one real example with its share card */
.feature { padding: 22px 0 6px; border-top: 1px solid var(--rule); margin-top: 26px; }
.feature-lead { color: var(--muted); font: 15px/1.5 var(--sans); margin: 0; }
.feature-h { font: 600 clamp(22px, 5vw, 28px)/1.3 var(--serif); margin: 8px 0 16px; }
.feature .card-preview { max-width: 520px; }
.feature .note { max-width: 520px; }
.more { margin-top: 16px; }
.age { margin-top: 24px; padding: 14px 0 16px; border-top: 6px solid var(--accent); font: 15px var(--sans); }
.age strong { display: block; font: 700 clamp(48px, 12vw, 84px)/1 var(--sans); letter-spacing: -.03em; font-variant-numeric: tabular-nums; margin: 4px 0; }
.panel { padding: 18px 0; border-top: 1px solid var(--rule); margin-top: 18px; }
.steps { padding-left: 22px; }
.steps li { margin: 4px 0; }
.examples { list-style: none; padding: 0; margin: 0; }
.examples li { padding: 10px 0; border-bottom: 1px dotted var(--rule); font: italic 19px/1.4 var(--serif); }
.examples a { text-decoration: none; }

/* A single milestone */
.dateline-entry { font: 14px var(--sans); color: var(--muted); letter-spacing: .02em; }
.context { font-size: 19px; line-height: 1.6; margin: 18px 0; }
.context::first-letter { font-size: 3.1em; float: left; line-height: .9; padding: 4px 8px 0 0; color: var(--accent); }
.context .note { display: block; margin-top: 6px; }
.card-preview { width: 100%; display: block; border: 1px solid var(--rule); }
.designs { display: flex; gap: 6px; margin: 10px 0 4px; flex-wrap: wrap; }
.designs .btn { min-height: 36px; padding: 6px 12px; font-size: 14px; }
.designs button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.designs button[aria-pressed="false"] { background: transparent; color: var(--ink); }
.share { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.share .btn { font-size: 15px; padding: 8px 14px; min-height: 42px; }
.share .btn.secondary { border-color: var(--rule); }
.sources { font: 14px/1.6 var(--sans); color: var(--muted); }

/* Further reading (affiliate): clearly labelled, set apart, never in shared content */
.ad { margin-top: 32px; padding: 16px 18px; background: var(--sheet); border: 1px solid var(--rule); }
.ad .label { font: 700 11px var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.ad strong { font: 600 18px var(--serif); }
.ad a { display: inline-block; margin: 6px 14px 0 0; font: 15px var(--sans); }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: var(--paper); padding: 10px 16px; font: 15px var(--sans); }

/* Static share pages */
.share-page { max-width: 720px; margin: 0 auto; padding: 24px 20px; }
.share-page h1 { font: 600 30px/1.2 var(--serif); }
.share-page img { width: 100%; height: auto; border: 1px solid var(--rule); }
.share-page .brand { font: 700 13px/1 var(--sans, Arial, sans-serif); letter-spacing: 3px; text-transform: uppercase; border-bottom: 4px solid var(--accent); padding-bottom: 10px; margin: 0 0 20px; }
.share-page .brand a { color: var(--ink); text-decoration: none; }
.share-page .pitch { font: 17px/1.5 var(--serif); }
.entry h2.headline { text-transform: none; color: var(--ink); border: 0; padding: 0; font: 600 clamp(30px, 5.6vw, 46px)/1.12 var(--serif); letter-spacing: -.01em; margin: 10px 0 12px; }

.adslot { margin-top: 32px; padding: 8px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); text-align: center; min-height: 270px; }
.adslot .label { font: 11px var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }