/* Dog Pregnancy Calculator — mobile-first stylesheet. System fonts only, no frameworks.
   Warm, trustworthy pet theme: cream ground, deep warm brown ink, terracotta accent. */
:root{
  --bark:#3d2b26; --bark-2:#553d33; --terra:#bc5314; --terra-dark:#9a4210;
  --cream:#fffaf3; --soft:#fdf1e0; --soft-2:#f7e3c8;
  --ink:#43302a; --muted:#7a655c; --line:#ecd9c3;
  --sage:#2e7d5f; --sage-bg:#e8f4ee; --rose:#a62b25; --rose-bg:#fbeeed;
  --amber-bg:#fdf3d8; --radius:14px; --shadow:0 6px 24px rgba(61,43,38,.10);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--cream);
  font-size:1.0625rem;line-height:1.7;-webkit-text-size-adjust:100%}
img{max-width:100%;height:auto}
a{color:var(--terra-dark);text-decoration:underline;text-underline-offset:2px}
a:hover{color:var(--terra)}
:focus-visible{outline:3px solid var(--terra);outline-offset:2px;border-radius:4px}
.wrap{max-width:1080px;margin:0 auto;padding:0 1.1rem}
main{display:block;padding-bottom:3rem}
h1,h2,h3{line-height:1.25;color:var(--bark);letter-spacing:-.01em}
h1{font-size:2rem;margin:1.3rem 0 .6rem}
h2{font-size:1.45rem;margin:2.4rem 0 .7rem;padding-top:1.1rem;border-top:1px solid var(--line)}
h2:first-of-type{border-top:0;padding-top:0}
h3{font-size:1.15rem;margin:1.5rem 0 .4rem}
p{margin:.7rem 0}
ul,ol{margin:.7rem 0;padding-left:1.4rem}
li{margin:.35rem 0}
.lede{font-size:1.18rem;color:var(--muted);margin:.4rem 0 1.3rem}
figure{margin:1.2rem 0}
figure img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%}
figcaption{font-size:.9rem;color:var(--muted);margin-top:.45rem}
table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:.98rem}
th,td{border:1px solid var(--line);padding:.55rem .7rem;text-align:left;vertical-align:top}
th{background:var(--soft);color:var(--bark)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--bark);color:#fff;padding:.6rem 1rem;z-index:99}
.skip-link:focus{left:.5rem;top:.5rem}

/* ---------- header ---------- */
.site-header{background:var(--bark);color:#fff;position:sticky;top:0;z-index:50;
  box-shadow:0 2px 10px rgba(0,0,0,.2)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:.8rem;flex-wrap:wrap;
  padding-top:.6rem;padding-bottom:.6rem}
.brand{display:flex;align-items:center;gap:.55rem;color:#fff;text-decoration:none;font-weight:800;
  font-size:1.16rem;letter-spacing:-.01em}
.brand em{font-style:normal;color:#f2b880}
.brand svg{flex:0 0 auto}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;
  background:transparent;border:1px solid rgba(255,255,255,.35);border-radius:8px;color:#fff;cursor:pointer}
.nav-toggle svg{width:22px;height:22px}
#site-nav{display:none}
@media(max-width:900px){
  #site-nav{flex:0 0 100%;order:3}
  #site-nav.open{display:block;border-top:1px solid rgba(255,255,255,.15);
    margin-top:.4rem;padding-bottom:.5rem;max-height:calc(100vh - 90px);overflow-y:auto}
}
#site-nav ul{list-style:none;margin:.6rem 0 0;padding:0;display:flex;flex-direction:column;gap:.1rem}
#site-nav a{display:block;color:#f3e4d3;text-decoration:none;padding:.65rem .4rem;border-radius:8px;font-weight:600}
#site-nav a:hover{background:rgba(255,255,255,.1);color:#fff}
#site-nav a[aria-current="page"]{background:rgba(255,255,255,.16);color:#fff}
@media(min-width:901px){
  .nav-toggle{display:none}
  #site-nav{display:block}
  #site-nav ul{flex-direction:row;gap:.1rem;margin:0;flex-wrap:wrap}
  #site-nav a{padding:.5rem .55rem;font-size:.94rem}
}

/* ---------- breadcrumb ---------- */
.breadcrumb{font-size:.9rem;color:var(--muted);margin:1rem 0 0}
.breadcrumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.35rem}
.breadcrumb li+li:before{content:"›";margin-right:.35rem;color:var(--muted)}
.breadcrumb a{color:var(--muted)}

/* ---------- disclaimer ---------- */
.disclaimer{background:var(--amber-bg);border:1px solid #ecd28f;border-radius:10px;
  padding:.65rem .9rem;font-size:.92rem;line-height:1.55;margin:1rem 0}
.disclaimer strong{color:var(--bark)}
.footer-disclaimer{background:var(--soft);border:1px solid var(--line);border-radius:10px;
  padding:.8rem 1rem;font-size:.94rem;margin:2rem 0 0}

/* ---------- tool ---------- */
.tool-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:1.1rem;margin:1rem 0 1.4rem}
.tool-card h2{border:0;margin-top:0;padding-top:0}
.field{margin:.8rem 0}
.field label{display:block;font-weight:700;color:var(--bark);margin-bottom:.3rem}
.field .hint{font-weight:400;font-size:.9rem;color:var(--muted);display:block}
input[type="date"],input[type="number"],select{font:inherit;font-size:1.05rem;color:var(--ink);
  background:#fff;border:2px solid #d9c3a8;border-radius:10px;padding:.65rem .7rem;
  min-height:52px;width:100%;max-width:340px}
input[type="date"]:focus,select:focus{border-color:var(--terra);outline:none;
  box-shadow:0 0 0 3px rgba(188,83,20,.18)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  min-height:52px;padding:.7rem 1.3rem;border-radius:10px;border:0;cursor:pointer;
  font:inherit;font-weight:700;font-size:1.02rem;text-decoration:none;
  background:var(--terra);color:#fff}
.btn:hover{background:var(--terra-dark);color:#fff}
.btn.secondary{background:#fff;color:var(--terra-dark);border:2px solid var(--terra)}
.btn.secondary:hover{background:var(--soft)}
.btn.small{min-height:48px;padding:.55rem 1rem;font-size:.95rem}
.btn-row{display:flex;flex-wrap:wrap;gap:.6rem;margin:1rem 0}
.microcopy{font-size:.9rem;color:var(--muted);margin-top:.8rem}

.results{display:none;margin-top:1.1rem;border-top:2px dashed var(--line);padding-top:1rem}
.results.show{display:block}
.result-hero{background:var(--sage-bg);border:1px solid #bfe0d1;border-radius:12px;
  padding:1rem 1.1rem;margin-bottom:.9rem}
.result-hero .rlabel{font-size:.85rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;color:var(--sage)}
.result-hero .rbig{font-size:1.65rem;font-weight:800;color:var(--bark);line-height:1.3}
.result-hero .rsub{color:var(--muted)}
.result-grid{display:grid;grid-template-columns:1fr;gap:.7rem}
@media(min-width:640px){.result-grid{grid-template-columns:1fr 1fr}}
.result-box{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:.85rem 1rem}
.result-box .rlabel{font-size:.82rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;color:var(--muted)}
.result-box .rval{font-size:1.22rem;font-weight:800;color:var(--bark);line-height:1.35}
.result-box .rsub{font-size:.92rem;color:var(--muted)}
.result-note{background:var(--rose-bg);border:1px solid #efc4c1;border-radius:10px;
  padding:.7rem .95rem;margin-top:.9rem;font-size:.96rem}
.result-note.ok{background:var(--sage-bg);border-color:#bfe0d1}

/* progress timeline */
.timeline{margin:1.2rem 0 .4rem}
.tl-bar{display:flex;gap:3px}
.tl-seg{flex:1 1 0;background:var(--soft-2);border-radius:5px;min-height:44px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-size:.72rem;font-weight:700;color:var(--muted);padding:.2rem 0;line-height:1.25}
.tl-seg.done{background:#a8cbb8;color:#20493a}
.tl-seg.now{background:var(--terra);color:#fff;box-shadow:0 0 0 2px rgba(188,83,20,.3)}
.tl-seg .tl-d{font-weight:400;font-size:.64rem}
.tl-legend{font-size:.86rem;color:var(--muted);margin-top:.4rem}
.tl-flags{list-style:none;margin:.6rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:.4rem}
.tl-flags li{background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:.22rem .7rem;font-size:.84rem}
.tl-flags li b{color:var(--terra-dark)}

/* week list + day-by-day */
.week-list{list-style:none;margin:1rem 0;padding:0}
.week-list li{border:1px solid var(--line);border-radius:10px;padding:.7rem .9rem;
  margin:.5rem 0;background:#fff}
.week-list li.now{border-color:var(--terra);background:#fff7ec;
  box-shadow:0 0 0 2px rgba(188,83,20,.15)}
.week-list .wk{font-weight:800;color:var(--bark)}
.week-list .wd{color:var(--muted);font-size:.92rem}
.week-list .wn{display:block;margin-top:.15rem}
.day-toggle{margin:1rem 0}
.day-list{columns:1;list-style:none;margin:.6rem 0;padding:0}
@media(min-width:700px){.day-list{columns:2;column-gap:2rem}}
.day-list li{break-inside:avoid;border-bottom:1px solid var(--line);
  padding:.32rem 0;font-size:.95rem}
.day-list .dn{font-weight:700;color:var(--bark);display:inline-block;min-width:4.6rem}
.day-list .flag{color:var(--terra-dark);font-weight:600}
details.more{border:1px solid var(--line);border-radius:10px;padding:.6rem .9rem;background:#fff}
details.more summary{cursor:pointer;font-weight:700;color:var(--bark);
  min-height:48px;display:flex;align-items:center}

/* calendar grid */
.cal-grid{display:grid;grid-template-columns:1fr;gap:.6rem;margin:1rem 0}
@media(min-width:640px){.cal-grid{grid-template-columns:1fr 1fr}}
@media(min-width:960px){.cal-grid{grid-template-columns:1fr 1fr 1fr}}
.cal-cell{border:1px solid var(--line);border-radius:10px;padding:.75rem .9rem;background:#fff}
.cal-cell.now{border-color:var(--terra);background:#fff7ec}
.cal-cell .cw{font-weight:800;color:var(--bark)}
.cal-cell .cd{color:var(--muted);font-size:.9rem}
.cal-cell .cm{display:block;margin-top:.2rem;font-size:.95rem}

/* cards / hubs */
.card-grid{display:grid;grid-template-columns:1fr;gap:.8rem;margin:1rem 0}
@media(min-width:640px){.card-grid{grid-template-columns:1fr 1fr}}
@media(min-width:960px){.card-grid.cols3{grid-template-columns:1fr 1fr 1fr}}
.card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:1rem 1.1rem;text-decoration:none;color:var(--ink);box-shadow:var(--shadow)}
.card:hover{border-color:var(--terra)}
.card .ct{font-weight:800;color:var(--bark);font-size:1.08rem;display:block}
.card .cd{color:var(--muted);font-size:.95rem;display:block;margin-top:.2rem}
.card img{border-radius:10px;margin-bottom:.6rem;width:100%}

/* vet alert box */
.vet-box{background:var(--rose-bg);border:1px solid #efc4c1;border-left:6px solid var(--rose);
  border-radius:10px;padding:.9rem 1.1rem;margin:1.4rem 0}
.vet-box h3{color:var(--rose);margin-top:0}
.ok-box{background:var(--sage-bg);border:1px solid #bfe0d1;border-left:6px solid var(--sage);
  border-radius:10px;padding:.9rem 1.1rem;margin:1.4rem 0}

/* faq */
.faq h3{margin-bottom:.2rem}
.faq p{margin-top:.2rem}

/* pdf block */
.pdf-block{display:flex;gap:1rem;align-items:center;flex-wrap:wrap;background:var(--soft);
  border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.1rem;margin:1.4rem 0}
.pdf-block img{max-width:170px;border-radius:10px;box-shadow:var(--shadow)}
.pdf-block .pt{font-weight:800;color:var(--bark);font-size:1.1rem}

/* week sections in pillar post */
.week-sec{border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  padding:1rem 1.1rem;margin:1.1rem 0;box-shadow:var(--shadow)}
.week-sec h3{margin-top:.2rem}
.week-sec figure{margin:.6rem 0}
.checklist{list-style:none;padding:0}
.checklist li{padding-left:1.7rem;position:relative;margin:.45rem 0}
.checklist li:before{content:"☐";position:absolute;left:0;color:var(--terra);font-weight:700}
.byline{font-size:.92rem;color:var(--muted);margin:.2rem 0 1rem}

/* ---------- footer ---------- */
.site-footer{background:var(--bark);color:#f3e4d3;margin-top:3rem;padding:2rem 0 1.4rem}
.site-footer a{color:#f2c894}
.site-footer .fcols{display:grid;grid-template-columns:1fr;gap:1.2rem}
@media(min-width:760px){.site-footer .fcols{grid-template-columns:1.3fr 1fr 1fr}}
.site-footer h3,.site-footer h4{color:#fff;margin:.2rem 0 .5rem;font-size:1rem}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:.3rem 0}
.site-footer a{text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.footer-note{border-top:1px solid rgba(255,255,255,.18);margin-top:1.4rem;
  padding-top:1rem;font-size:.88rem;color:#d8c3b2}

/* ---------- print: timelines and charts print clean ---------- */
@media print{
  .site-header,.site-footer,.nav-toggle,.breadcrumb,.btn-row,.tool-form,.no-print,
  .card-grid,.pdf-block .btn{display:none !important}
  body{background:#fff;color:#000;font-size:11pt}
  .wrap{max-width:none;padding:0}
  h1,h2,h3{color:#000}
  .tool-card,.week-sec,.cal-cell{box-shadow:none;border-color:#999}
  .results{display:block !important}
  .disclaimer{border-color:#999;background:#fff}
  a{color:#000;text-decoration:none}
  details.more{border:0}
  details.more>*{display:block}
}