/* Booklore web surface — single stylesheet, zero external requests */
:root {
  --brand: #b45309;
  --brand-hover: #92400e;
  --paper: #fbf7f0;
  --ink: #1c1917;
  --soft: #78716c;
  --card: #ffffff;
  --border: #ece3d6;
  --radius: 12px;
  --max-w: 820px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1c1917;
    --ink: #f5f5f4;
    --soft: #a8a29e;
    --card: #292524;
    --border: #44403c;
    --brand: #f59e0b;
    --brand-hover: #fbbf24;
  }
}
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}
a { color: var(--brand); }
a:hover, a:focus-visible { color: var(--brand-hover); }
.skip {
  position: absolute; left: -9999px; top: auto;
  background: var(--brand); color: #fff; padding: 8px 16px; z-index: 100;
  border-radius: 0 0 var(--radius) 0;
}
.skip:focus { left: 0; top: 0; }

/* Nav */
header { border-bottom: 1px solid var(--border); }
nav[aria-label="Main navigation"] {
  max-width: var(--max-w); margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.nav-brand { display: flex; align-items: center; gap: 8px; text-decoration: none; font-weight: 700; font-size: 18px; color: var(--ink); }
.nav-icon { border-radius: 6px; }
nav ul { list-style: none; padding: 0; display: flex; gap: 16px; margin-left: auto; }
nav ul a { text-decoration: none; font-size: 15px; font-weight: 500; }

/* Hero */
.hero { text-align: center; padding: 56px 20px 32px; max-width: 640px; margin: 0 auto; }
.app-icon { border-radius: 22px; }
.hero h1 { font-size: 2rem; margin: 20px 0 12px; color: var(--brand); }
.lead { font-size: 1.15rem; color: var(--soft); max-width: 520px; margin: 0 auto 28px; }
.cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--ink); color: var(--paper); text-decoration: none;
  font-weight: 600; font-size: 16px; padding: 14px 28px;
  border-radius: var(--radius); transition: opacity .15s;
}
.cta:hover, .cta:focus-visible { opacity: .85; color: var(--paper); }

/* Screenshots */
.screenshots { padding: 24px 0; overflow: hidden; }
.scroll-row {
  display: flex; gap: 16px; overflow-x: auto; padding: 0 20px 16px;
  scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
}
.scroll-row img {
  flex: 0 0 auto; width: 240px; height: auto; border-radius: var(--radius);
  scroll-snap-align: center; box-shadow: 0 2px 12px rgba(0,0,0,.08);
}

/* Features */
.features { max-width: var(--max-w); margin: 0 auto; padding: 40px 20px; }
.features h2 { text-align: center; font-size: 1.5rem; margin-bottom: 28px; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
.feature {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
}
.feature h3 { font-size: 1rem; margin-bottom: 6px; color: var(--brand); }
.feature p { font-size: .92rem; color: var(--soft); }

/* Privacy promise */
.privacy-promise { max-width: 640px; margin: 0 auto; padding: 32px 20px 48px; text-align: center; }
.privacy-promise h2 { font-size: 1.4rem; margin-bottom: 12px; }
.privacy-promise p { color: var(--soft); margin-bottom: 12px; }

/* Content pages (support, faq, privacy, terms) */
.page { max-width: 720px; margin: 0 auto; padding: 32px 20px 64px; }
.page h1 { font-size: 1.8rem; color: var(--brand); border-bottom: 3px solid var(--brand); padding-bottom: 8px; margin-bottom: 8px; }
.page .updated { color: var(--soft); font-size: 14px; margin-bottom: 24px; }
.page h2 { margin-top: 28px; color: var(--brand); font-size: 1.2rem; }
.page p, .page li { margin-top: 8px; }
.page ol, .page ul { padding-left: 24px; }
.page dt { font-weight: 600; margin-top: 20px; }
.page dd { margin: 4px 0 0 0; color: var(--soft); }

/* FAQ specific */
.faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-item h2 { margin-top: 0; font-size: 1.1rem; }
.faq-item p { color: var(--soft); }

/* Footer */
footer {
  border-top: 1px solid var(--border); text-align: center;
  padding: 24px 20px; font-size: 14px; color: var(--soft);
}
footer nav { display: flex; gap: 16px; justify-content: center; margin-bottom: 8px; flex-wrap: wrap; }
footer nav a { font-size: 14px; }

/* Focus */
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

/* Guide pages (iter: seo campaign 2026-08-14) */
table { width: 100%; border-collapse: collapse; margin: 1.2rem 0; font-size: .95rem; }
th, td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid rgba(120, 90, 60, .18); vertical-align: top; }
thead th { border-bottom: 2px solid var(--accent, #B45309); }
tbody tr:nth-child(odd) { background: rgba(180, 131, 9, .045); }
code { background: rgba(120, 90, 60, .1); padding: .1em .35em; border-radius: 4px; font-size: .92em; }
.muted { opacity: .75; font-size: .92em; }
article ol li, article ul li { margin: .35rem 0; }
.guides ul { padding-left: 1.2rem; }
@media (max-width: 480px) { table { display: block; overflow-x: auto; } }