/* ============================================================
   AI Boyfriend Simulator — "editorial romance" design language
   bf-* class scheme. Light paper theme, wine/rose accents,
   serif display headings, CSS chat mockup. Unique to this site.
   ============================================================ */

:root {
  --bf-paper: #faf5f0;
  --bf-paper-2: #f3eae2;
  --bf-ink: #2b2026;
  --bf-ink-soft: #5c4a53;
  --bf-wine: #8e2f4e;
  --bf-wine-dark: #6e2039;
  --bf-rose: #d98ba3;
  --bf-rose-pale: #f2dbe2;
  --bf-line: #e5d5cd;
  --bf-amber: #b97f2e;
  --bf-serif: Georgia, "Times New Roman", "Noto Serif", serif;
  --bf-sans: "Segoe UI", -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--bf-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--bf-ink);
  background: var(--bf-paper);
}

/* ---------- top bar ---------- */
.bf-top {
  border-bottom: 1px solid var(--bf-line);
  background: var(--bf-paper);
  padding: 14px 20px;
}
.bf-top-in {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 18px;
}
.bf-brand {
  font-family: var(--bf-serif);
  font-size: 1.25em;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--bf-wine);
  text-decoration: none;
}
.bf-brand em { font-style: italic; color: var(--bf-ink); }
.bf-nav { display: flex; flex-wrap: wrap; gap: 4px 18px; }
.bf-nav a {
  color: var(--bf-ink-soft);
  text-decoration: none;
  font-size: 0.92em;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.bf-nav a:hover { color: var(--bf-wine); border-bottom-color: var(--bf-rose); }

/* ---------- hero ---------- */
.bf-hero {
  max-width: 980px;
  margin: 0 auto;
  padding: 54px 20px 30px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}
.bf-kicker {
  font-family: var(--bf-sans);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.72em;
  color: var(--bf-amber);
  margin-bottom: 14px;
}
.bf-hero h1 {
  font-family: var(--bf-serif);
  font-size: 2.6em;
  line-height: 1.12;
  font-weight: 700;
  color: var(--bf-ink);
  margin-bottom: 18px;
}
.bf-hero h1 em { font-style: italic; color: var(--bf-wine); }
.bf-lede {
  font-size: 1.08em;
  color: var(--bf-ink-soft);
  margin-bottom: 14px;
}
.bf-hero.single { grid-template-columns: 1fr; padding-bottom: 16px; }
.bf-hero.single h1 { font-size: 2.2em; max-width: 760px; }

/* ---------- chat mockup ---------- */
.bf-chat {
  background: #fffdfb;
  border: 1px solid var(--bf-line);
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(110, 32, 57, 0.09);
  padding: 22px 18px 18px;
  max-width: 400px;
  margin: 0 auto;
  width: 100%;
}
.bf-chat-head {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--bf-line);
  padding-bottom: 12px;
  margin-bottom: 14px;
}
.bf-ava {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bf-wine), var(--bf-rose));
  color: #fff;
  font-family: var(--bf-serif);
  font-size: 1.05em;
  display: flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
}
.bf-chat-name { font-weight: 600; font-size: 0.95em; }
.bf-chat-status { font-size: 0.78em; color: var(--bf-amber); }
.bf-b {
  max-width: 85%;
  padding: 9px 14px;
  border-radius: 16px;
  margin-bottom: 9px;
  font-size: 0.92em;
  line-height: 1.5;
}
.bf-b.his {
  background: var(--bf-paper-2);
  color: var(--bf-ink);
  border-bottom-left-radius: 4px;
  margin-right: auto;
}
.bf-b.mine {
  background: var(--bf-wine);
  color: #fdf3f6;
  border-bottom-right-radius: 4px;
  margin-left: auto;
  text-align: right;
}
.bf-typing {
  font-size: 0.8em;
  color: var(--bf-ink-soft);
  font-style: italic;
  padding-left: 4px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  background: var(--bf-wine);
  color: #fff8fa;
  font-family: var(--bf-sans);
  font-weight: 600;
  font-size: 1em;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-align: center;
  padding: 14px 34px;
  border-radius: 999px;
  border: 1px solid var(--bf-wine-dark);
  box-shadow: 0 4px 14px rgba(142, 47, 78, 0.28);
  transition: background 0.15s ease, transform 0.15s ease;
}
.btn:hover { background: var(--bf-wine-dark); transform: translateY(-1px); }
.bf-cta {
  text-align: center;
  padding: 10px 20px 34px;
}
.bf-cta-sub {
  display: block;
  font-size: 0.8em;
  color: var(--bf-ink-soft);
  margin-top: 10px;
}

/* ---------- sections ---------- */
.bf-section {
  max-width: 980px;
  margin: 0 auto;
  padding: 38px 20px;
}
.bf-section + .bf-section { border-top: 1px solid var(--bf-line); }
.bf-section h2 {
  font-family: var(--bf-serif);
  font-size: 1.75em;
  line-height: 1.2;
  color: var(--bf-ink);
  margin-bottom: 16px;
}
.bf-section h2 em { font-style: italic; color: var(--bf-wine); }
.bf-section h3 {
  font-family: var(--bf-serif);
  font-size: 1.18em;
  color: var(--bf-wine-dark);
  margin: 22px 0 8px;
}
.bf-section p { margin-bottom: 13px; }
.bf-section ul, .bf-section ol { margin: 0 0 14px 22px; }
.bf-section li { margin-bottom: 7px; }
.bf-section a { color: var(--bf-wine); }
.bf-section a:hover { color: var(--bf-wine-dark); }

.bf-divider {
  text-align: center;
  color: var(--bf-rose);
  font-size: 0.95em;
  letter-spacing: 0.6em;
  padding: 4px 0 2px;
  user-select: none;
}

/* ---------- cards & grids ---------- */
.bf-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.bf-grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.bf-card {
  background: #fffdfb;
  border: 1px solid var(--bf-line);
  border-radius: 14px;
  padding: 20px 20px 16px;
}
.bf-card h3 { margin-top: 0; }
.bf-card p { font-size: 0.95em; color: var(--bf-ink-soft); margin-bottom: 0; }
.bf-badge {
  display: inline-block;
  background: var(--bf-rose-pale);
  color: var(--bf-wine-dark);
  font-size: 0.72em;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 10px;
}

/* ---------- numbered steps ---------- */
.bf-steps { counter-reset: bfstep; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.bf-step {
  background: #fffdfb;
  border: 1px solid var(--bf-line);
  border-radius: 14px;
  padding: 22px 20px 16px;
  position: relative;
}
.bf-step::before {
  counter-increment: bfstep;
  content: counter(bfstep);
  font-family: var(--bf-serif);
  font-style: italic;
  font-size: 2em;
  color: var(--bf-rose);
  display: block;
  line-height: 1;
  margin-bottom: 8px;
}
.bf-step h3 { margin-top: 0; }
.bf-step p { font-size: 0.95em; color: var(--bf-ink-soft); margin-bottom: 0; }

/* ---------- tables ---------- */
.bf-tablewrap { overflow-x: auto; margin-bottom: 14px; }
.bf-tablewrap table {
  width: 100%;
  border-collapse: collapse;
  background: #fffdfb;
  border: 1px solid var(--bf-line);
  border-radius: 10px;
  font-size: 0.95em;
}
.bf-tablewrap th {
  font-family: var(--bf-serif);
  text-align: left;
  color: var(--bf-wine-dark);
  background: var(--bf-rose-pale);
  padding: 10px 14px;
  border-bottom: 1px solid var(--bf-line);
}
.bf-tablewrap td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--bf-line);
  vertical-align: top;
}
.bf-tablewrap tr:last-child td { border-bottom: none; }

/* ---------- notes / disclosure ---------- */
.bf-note {
  background: var(--bf-paper-2);
  border-left: 3px solid var(--bf-amber);
  border-radius: 0 10px 10px 0;
  padding: 14px 18px;
  font-size: 0.92em;
  color: var(--bf-ink-soft);
  margin: 16px 0;
}

/* ---------- FAQ ---------- */
.bf-faq details {
  background: #fffdfb;
  border: 1px solid var(--bf-line);
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 10px;
}
.bf-faq summary {
  font-family: var(--bf-serif);
  font-size: 1.05em;
  font-weight: 600;
  color: var(--bf-wine-dark);
  cursor: pointer;
}
.bf-faq details[open] summary { margin-bottom: 8px; }
.bf-faq details p { color: var(--bf-ink-soft); font-size: 0.96em; margin-bottom: 6px; }

/* ---------- blog / article ---------- */
.bf-meta {
  font-size: 0.82em;
  color: var(--bf-ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 16px;
}
.bf-quote {
  font-family: var(--bf-serif);
  font-style: italic;
  font-size: 1.15em;
  color: var(--bf-wine-dark);
  border-left: 3px solid var(--bf-rose);
  padding: 6px 0 6px 20px;
  margin: 18px 0;
}

/* ---------- portfolio / more sites ---------- */
.bf-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.bf-links a {
  display: block;
  background: #fffdfb;
  border: 1px solid var(--bf-line);
  border-radius: 12px;
  padding: 14px 16px;
  text-decoration: none;
  color: var(--bf-ink);
  font-size: 0.92em;
}
.bf-links a strong {
  display: block;
  font-family: var(--bf-serif);
  color: var(--bf-wine);
  margin-bottom: 4px;
}
.bf-links a:hover { border-color: var(--bf-rose); }

/* ---------- language selector ---------- */
nav.lang {
  max-width: 980px;
  margin: 0 auto;
  padding: 20px;
  text-align: center;
  font-size: 0.85em;
  color: var(--bf-ink-soft);
  border-top: 1px solid var(--bf-line);
}
nav.lang a {
  color: var(--bf-ink-soft);
  text-decoration: none;
  padding: 0 2px;
}
nav.lang a:hover { color: var(--bf-wine); }

/* ---------- footer ---------- */
.bf-foot {
  background: var(--bf-paper-2);
  border-top: 1px solid var(--bf-line);
  padding: 26px 20px 34px;
  font-size: 0.85em;
  color: var(--bf-ink-soft);
}
.bf-foot-in { max-width: 980px; margin: 0 auto; }
.bf-foot p { margin-bottom: 8px; }
.bf-foot a { color: var(--bf-wine); text-decoration: none; }
.bf-foot a:hover { text-decoration: underline; }
.bf-disclosure {
  font-size: 0.92em;
  border-top: 1px dashed var(--bf-line);
  padding-top: 10px;
  margin-top: 10px;
}

/* ---------- breadcrumbs-ish backlink ---------- */
.bf-back {
  font-size: 0.85em;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---------- responsive ---------- */
@media (max-width: 820px) {
  .bf-hero { grid-template-columns: 1fr; padding-top: 34px; gap: 28px; }
  .bf-hero h1 { font-size: 2.05em; }
  .bf-grid3, .bf-steps, .bf-links { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .bf-grid2, .bf-grid3, .bf-steps, .bf-links { grid-template-columns: 1fr; }
  .bf-hero h1 { font-size: 1.8em; }
  .btn { display: block; }
}