/* HearthPDF website – one small stylesheet, no frameworks, no web fonts, no tracking. */
:root {
  --teal: #0b6e5f;
  --teal-2: #14a38b;
  --teal-soft: #ecf8f5;
  --ink: #1d2530;
  --muted: #5d6875;
  --line: #e3e7eb;
  --bg: #ffffff;
  --bg-2: #f6f8f9;
  --accent: #e8483b;
  --coffee: #ffdd00;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(16, 40, 50, .10), 0 2px 6px rgba(16, 40, 50, .06);
  --max: 1120px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --teal: #3cc7ad;
    --teal-2: #5ad9c1;
    --teal-soft: #13312c;
    --ink: #e7ecef;
    --muted: #a3afba;
    --line: #2a3540;
    --bg: #0f1418;
    --bg-2: #151c21;
    --shadow: 0 10px 30px rgba(0, 0, 0, .45);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 17px/1.6 "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal); text-underline-offset: 3px; }
a:hover { color: var(--teal-2); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.center { text-align: center; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: var(--bg); padding: 8px 12px; z-index: 10; }

/* ---------- header */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.brand img { width: 32px; height: 32px; }
.nav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 500; font-size: .97rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--teal); }
.nav .btn, .nav a.btn[aria-current="page"] { color: #fff; }
@media (max-width: 760px) {
  .nav a:not(.btn) { display: none; }
}

/* ---------- buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; text-decoration: none;
  background: var(--teal); color: #fff; border: 2px solid var(--teal);
  transition: transform .12s ease, background .12s ease;
}
.btn:hover { background: var(--teal-2); border-color: var(--teal-2); color: #fff; transform: translateY(-1px); }
.btn.big { padding: 16px 30px; font-size: 1.08rem; }
.btn.ghost { background: transparent; color: var(--teal); }
.btn.ghost:hover { background: var(--teal-soft); color: var(--teal); }
.btn.coffee { background: var(--coffee); border-color: var(--coffee); color: #1d1d1d; }
.btn.coffee:hover { background: #ffe74d; border-color: #ffe74d; color: #1d1d1d; }
.btn small { font-weight: 400; opacity: .85; }

/* ---------- hero */
.hero { padding: 72px 0 40px; background: radial-gradient(1200px 500px at 70% -10%, var(--teal-soft), transparent 70%); }
.hero .wrap { display: grid; gap: 40px; }
.hero h1 span { color: var(--teal); }
.lead { font-size: 1.22rem; color: var(--muted); max-width: 640px; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; margin: 26px 0 12px; }
.ticks { list-style: none; padding: 0; margin: 18px 0 0; display: flex; flex-wrap: wrap; gap: 10px 22px; color: var(--muted); font-size: .95rem; }
.ticks li::before { content: "✓"; color: var(--teal-2); font-weight: 700; margin-right: 8px; }
.shot {
  border-radius: 12px; box-shadow: var(--shadow); border: 1px solid var(--line); background: #fff;
}
.hero-shot { margin-top: 10px; }

/* ---------- sections */
section { padding: 72px 0; }
section.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 720px; margin: 0 auto 40px; text-align: center; }
.section-head p { color: var(--muted); font-size: 1.08rem; }

.promise { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.promise div { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.promise b { display: block; font-size: 1.05rem; margin-bottom: 4px; }
.promise .icon { font-size: 1.6rem; display: block; margin-bottom: 8px; }
@media (max-width: 900px) { .promise { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .promise { grid-template-columns: 1fr; } }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature { padding: 24px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg); }
.feature h3 { display: flex; align-items: center; gap: 10px; }
.feature h3 .dot { width: 34px; height: 34px; border-radius: 10px; background: var(--teal-soft); display: inline-grid; place-items: center; font-size: 1.05rem; }
.feature ul { margin: 0; padding-left: 1.1em; color: var(--muted); font-size: .97rem; }
@media (max-width: 900px) { .features { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .features { grid-template-columns: 1fr; } }

.split { display: grid; grid-template-columns: 1fr 1.35fr; gap: 48px; align-items: center; }
.split.flip { grid-template-columns: 1.35fr 1fr; }
.split.flip > :first-child { order: 2; }
.split + .split { margin-top: 72px; }
@media (max-width: 860px) { .split, .split.flip { grid-template-columns: 1fr; } .split.flip > :first-child { order: 0; } }

.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gallery figure { margin: 0; }
.gallery figcaption { font-size: .9rem; color: var(--muted); margin-top: 8px; text-align: center; }
.gallery a { display: block; }
@media (max-width: 760px) { .gallery { grid-template-columns: 1fr 1fr; } }

/* ---------- donate */
.donate { text-align: center; }
.donate .box {
  max-width: 760px; margin: 0 auto; padding: 44px 28px; border-radius: 22px;
  background: linear-gradient(135deg, var(--teal), #0a5348); color: #fff;
}
.donate .box p { color: #d7efea; font-size: 1.08rem; }
.donate .box h2 { color: #fff; }

/* ---------- faq */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 1.05rem; }
.faq details p { margin: 10px 0 0; color: var(--muted); }

/* ---------- download page */
.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps li { counter-increment: step; position: relative; padding: 0 0 18px 50px; }
.steps li::before {
  content: counter(step); position: absolute; left: 0; top: -2px; width: 34px; height: 34px; border-radius: 50%;
  background: var(--teal-soft); color: var(--teal); display: grid; place-items: center; font-weight: 700;
}
code, kbd { font-family: Consolas, "Cascadia Mono", monospace; font-size: .9em; background: var(--bg-2); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; }
.note { border-left: 4px solid var(--teal-2); background: var(--teal-soft); padding: 14px 18px; border-radius: 8px; margin: 18px 0; }

/* ---------- prose pages (privacy) */
.prose { max-width: 760px; margin: 0 auto; padding: 56px 20px; }
.prose h2 { margin-top: 1.6em; font-size: 1.45rem; }
.prose li { margin-bottom: .4em; }

/* ---------- footer */
.site-footer { border-top: 1px solid var(--line); padding: 36px 0 44px; color: var(--muted); font-size: .93rem; }
.site-footer .wrap { display: flex; gap: 24px; flex-wrap: wrap; align-items: center; justify-content: space-between; }
.site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); }