/* PuppySleeper — night-light palette */
:root {
  --night: #1e2a4a;
  --night-deep: #162039;
  --paper: #f5f6fa;
  --card: #ffffff;
  --ink: #1c2233;
  --muted: #586179;
  --line: #dce1eb;
  --glow: #f3c454;
  --glow-soft: #fdf3d6;
  --link: #2b4c94;
  --serif: "Young Serif", Georgia, "Times New Roman", serif;
  --sans: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.6 var(--sans);
}
img { max-width: 100%; height: auto; }
a { color: var(--link); text-underline-offset: 3px; }
a:hover { color: var(--night); }
:focus-visible { outline: 3px solid var(--glow); outline-offset: 2px; border-radius: 3px; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--glow); color: var(--ink); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.wrap-narrow { max-width: 720px; margin: 0 auto; padding: 0 20px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.2; color: var(--ink); }
h1 { font-size: clamp(2rem, 4.5vw, 2.9rem); margin: 0.2em 0 0.4em; letter-spacing: -0.01em; }
h2 { font-size: 1.6rem; margin: 1.8em 0 0.5em; }
h3 { font-size: 1.25rem; margin: 1.5em 0 0.4em; }
h4 { font-family: var(--sans); font-size: 1.05rem; margin: 1.4em 0 0.3em; }

/* Header */
.site-head { background: var(--night-deep); color: #fff; }
.head-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
.brand { display: inline-flex; align-items: center; gap: 8px; color: inherit; text-decoration: none; font-family: var(--serif); font-size: 1.3rem; }
.brand .mark { width: auto; height: 52px; display: block; }
.about-logo { display: block; width: min(320px, 80%); height: auto; margin: 8px 0 4px; }
.site-head nav { display: flex; gap: 6px 20px; flex-wrap: wrap; }
.site-head nav a { color: #dfe5f3; text-decoration: none; font-size: 0.98rem; padding: 4px 0; border-bottom: 2px solid transparent; }
.site-head nav a:hover, .site-head nav a[aria-current="page"] { color: #fff; border-bottom-color: var(--glow); }

/* Buttons */
.btn { display: inline-block; background: var(--night); color: #fff; text-decoration: none; padding: 12px 18px; border-radius: 999px; font-weight: 700; font-size: 0.98rem; line-height: 1.2; }
.btn:hover { background: var(--night-deep); color: #fff; }
.btn-light { background: var(--glow); color: var(--ink); }
.btn-light:hover { background: #ffd877; color: var(--ink); }
.btn-ghost { background: transparent; color: #fff; box-shadow: inset 0 0 0 2px rgba(255,255,255,.5); }
.btn-ghost:hover { background: rgba(255,255,255,.08); color: #fff; }

/* Home hero */
.hero { background: radial-gradient(1200px 500px at 85% -10%, #2c3c69 0%, transparent 60%), var(--night); color: #e8ecf6; padding: 56px 0 64px; }
.hero h1 { color: #fff; font-size: clamp(2.1rem, 5vw, 3.3rem); max-width: 17ch; }
.hero .lede { font-size: 1.15rem; color: #cfd6e8; max-width: 46ch; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.hero-night { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); border-radius: 18px; padding: 22px 22px 18px; }
.hero-night h2 { color: #fff; font-size: 1.25rem; margin: 0 0 14px; }

/* Night timeline (the one memorable thing) */
.night-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 26px; }
.night-tabs button { font: inherit; font-size: 0.9rem; color: #cfd6e8; background: transparent; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; padding: 6px 12px; cursor: pointer; }
.night-tabs button[aria-selected="true"] { background: var(--glow); color: var(--ink); border-color: var(--glow); font-weight: 700; }
.night-track { position: relative; height: 92px; margin: 0 10px; }
.night-track .hour { position: absolute; top: 0; left: calc(var(--x) * 100%); transform: translateX(-50%); font-size: 0.78rem; color: #9fabc8; }
.sleep-bar { position: absolute; left: 0; right: 0; top: 44px; height: 12px; border-radius: 6px; background: linear-gradient(90deg, #3a4f86, #5468a3 50%, #3a4f86); }
.wake { position: absolute; top: 30px; left: calc(var(--x) * 100%); transform: translateX(-50%); width: 40px; display: flex; flex-direction: column; align-items: center; }
.wake::before { content: ""; width: 18px; height: 18px; border-radius: 50%; background: var(--glow); box-shadow: 0 0 0 6px rgba(243,196,84,.25), 0 0 22px rgba(243,196,84,.7); margin-top: 3px; }
.wake span { margin-top: 10px; font-size: 0.75rem; color: var(--glow); }
.night-caption { margin: 6px 0 0; color: #dfe5f3; min-height: 3.2em; font-size: 0.98rem; }
@media (prefers-reduced-motion: no-preference) {
  .wake::before { animation: glow 2.4s ease-in-out infinite; }
  @keyframes glow { 50% { box-shadow: 0 0 0 9px rgba(243,196,84,.15), 0 0 28px rgba(243,196,84,.8); } }
}

/* Home sections */
.band { padding: 20px 20px 8px; }
.band > h2 { margin-top: 1.6em; }
.section-intro { color: var(--muted); max-width: 60ch; }
.problems { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.problems li { border-bottom: 1px solid var(--line); }
.problems a { display: block; padding: 18px 28px 18px 0; text-decoration: none; color: var(--ink); font-size: 1.08rem; position: relative; }
.problems a::after { content: ""; position: absolute; right: 14px; top: 50%; width: 8px; height: 8px; border-right: 2px solid var(--link); border-top: 2px solid var(--link); transform: translateY(-50%) rotate(45deg); }
.problems a:hover { color: var(--link); }
.problems li:nth-child(3n+1) a, .problems li:nth-child(3n+2) a { margin-right: 24px; }
.two-col { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; }
.starter { list-style: none; padding: 0; }
.starter li { padding: 10px 0; border-bottom: 1px solid var(--line); }
.starter a { font-weight: 700; }
.starter span { display: block; color: var(--muted); font-size: 0.95rem; }
.note { background: var(--glow-soft); border-radius: 16px; padding: 4px 26px 14px; align-self: start; margin-top: 1.6em; }
.note h2 { margin-top: 0.9em; font-size: 1.35rem; }

/* Picks */
.picks { list-style: none; padding: 0; margin: 16px 0; }
.pick { display: flex; gap: 24px; justify-content: space-between; align-items: center; padding: 20px 0; border-bottom: 1px solid var(--line); }
.pick:first-child { border-top: 1px solid var(--line); }
.pick h3 { margin: 0 0 6px; font-size: 1.2rem; }
.pick p { margin: 0 0 6px; }
.pick-cat { color: var(--muted); font-size: 0.88rem; }
.pick-for { font-size: 0.95rem; color: var(--muted); }
.pick .btn { flex-shrink: 0; }
.disclose { font-size: 0.88rem; color: var(--muted); margin: 8px 0 12px; }

/* Articles & pages */
.page, .article { padding-top: 28px; padding-bottom: 48px; }
.lede { font-size: 1.15rem; color: var(--muted); }
.crumbs { font-size: 0.9rem; color: var(--muted); margin: 0; }
.crumbs a { color: var(--muted); }
.byline { color: var(--muted); font-size: 0.95rem; margin: 0 0 12px; }
.print { font: inherit; font-size: 0.95rem; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px; cursor: pointer; margin-bottom: 8px; }
.print:hover { border-color: var(--night); }
.prose { font-size: 1.05rem; }
.prose p, .prose li { max-width: 68ch; }
.prose li { margin: 0.35em 0; }
.prose h2 { padding-top: 0.2em; }
.short-answer { background: var(--card); border: 1px solid var(--line); border-left: 6px solid var(--glow); border-radius: 12px; padding: 6px 24px 12px; margin: 20px 0 28px; }
.short-answer h2 { font-size: 1.3rem; margin: 0.8em 0 0.3em; }
.short-answer ul { padding-left: 1.2em; margin: 0.4em 0; }
.table-wrap { overflow-x: auto; margin: 18px 0; border: 1px solid var(--line); border-radius: 12px; background: var(--card); }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #eef1f7; font-weight: 700; }
tr:last-child td { border-bottom: 0; }
a.buy { display: inline-block; font-weight: 700; background: var(--glow-soft); padding: 6px 12px; border-radius: 8px; text-decoration: none; }
a.buy:hover { background: var(--glow); color: var(--ink); }
.article-picks { margin-top: 36px; }
.author-box { margin-top: 40px; padding: 4px 24px 10px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.author-box h2 { font-size: 1.2rem; margin: 0.8em 0 0.2em; }
.related ul { padding-left: 1.2em; }
.guide-list { list-style: none; padding: 0; }
.guide-list li { padding: 12px 0; border-bottom: 1px solid var(--line); }
.guide-list a { font-weight: 700; font-size: 1.08rem; }
.guide-list span { display: block; color: var(--muted); font-size: 0.95rem; }

/* Footer */
.site-foot { background: var(--night-deep); color: #c9d1e4; margin-top: 56px; padding: 36px 0; font-size: 0.95rem; }
.site-foot a { color: #e8ecf6; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 2fr; gap: 28px; }
.site-foot .brand { color: #fff; }
.fine { font-size: 0.85rem; color: #9fabc8; margin: 0; }

/* Responsive */
@media (max-width: 860px) {
  .hero-grid, .two-col, .foot-grid { grid-template-columns: 1fr; gap: 28px; }
  .problems { grid-template-columns: 1fr; }
  .problems li a { margin-right: 0 !important; }
  .hero { padding: 36px 0 44px; }
}
@media (max-width: 560px) {
  body { font-size: 17px; }
  .pick { flex-direction: column; align-items: flex-start; gap: 10px; }
  .head-row { justify-content: center; }
  .site-head nav { justify-content: center; }
}

/* Print: the sleep guide is meant to go on the fridge */
@media print {
  .site-head, .site-foot, .print, .related, .author-box, .crumbs, .disclose, .article-picks, .skip { display: none !important; }
  body { background: #fff; font-size: 11pt; }
  .short-answer { border-left-width: 4px; }
  a { color: inherit; text-decoration: none; }
  h2 { break-after: avoid; }
  table, .short-answer { break-inside: avoid; }
}

/* Senior dogs band on the homepage */
.senior-band { display: flex; gap: 24px; align-items: center; justify-content: space-between; flex-wrap: wrap; background: var(--card); border: 1px solid var(--line); border-left: 6px solid var(--night); border-radius: 16px; padding: 4px 26px 8px; margin-top: 28px; }
.senior-band h2 { margin: 0.8em 0 0.2em; font-size: 1.4rem; }
.senior-band p { margin: 0 0 12px; max-width: 52ch; }
.senior-links { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }