/* ==========================================================================
   O.A. Samuel — author site
   Modern & minimal. Ink on paper, one oxblood accent, generous whitespace.
   ========================================================================== */

:root {
  --ink: #17161a;
  --ink-soft: #33313a;
  --paper: #f7f5f0;
  --paper-2: #efece3;
  --card: #ffffff;
  --muted: #6c6960;
  --line: #e4dfd3;
  --accent: #8f2d2d;      /* oxblood */
  --accent-deep: #6f2020;
  --gold: #a8823c;
  --shadow: 0 1px 2px rgba(20,18,16,.04), 0 12px 30px rgba(20,18,16,.08);
  --shadow-lg: 0 30px 70px rgba(20,18,16,.20);
  --radius: 14px;
  --max: 1140px;
  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 .5em;
}

p { margin: 0 0 1.1em; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }
.narrow { max-width: 760px; }

.eyebrow {
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: .22em;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 18px;
}

.muted { color: var(--muted); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .01em;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--accent); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-outline:hover { border-color: var(--ink); transform: translateY(-1px); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: var(--paper-2); }
.btn svg { width: 16px; height: 16px; }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247,245,240,.82);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.brand {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: .02em;
}
.brand span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-soft);
  position: relative;
  transition: color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px; background: var(--accent);
}
.nav-cta { margin-left: 6px; }
.nav-toggle {
  display: none;
  background: none; border: 0; cursor: pointer;
  width: 40px; height: 40px; padding: 8px;
}
.nav-toggle span { display: block; height: 2px; background: var(--ink); margin: 5px 0; transition: .25s; border-radius: 2px; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero { padding: 92px 0 40px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 64px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(44px, 6.4vw, 82px);
  line-height: .98;
  margin-bottom: 22px;
}
.hero .lede {
  font-size: 20px;
  color: var(--ink-soft);
  max-width: 30ch;
  margin-bottom: 30px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stack {
  position: relative;
  display: flex;
  justify-content: center;
  perspective: 1400px;
}
.hero-stack img {
  width: 300px;
  border-radius: 6px;
  box-shadow: var(--shadow-lg);
  transform: rotateY(-16deg) rotateX(3deg);
  transition: transform .5s ease;
}
.hero-stack img:hover { transform: rotateY(-6deg) rotateX(1deg) translateY(-4px); }

/* ---------- sections ---------- */
section { position: relative; }
.section-pad { padding: 76px 0; }
.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(30px, 4vw, 44px); }
.section-head p { color: var(--muted); font-size: 18px; margin-bottom: 0; }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ---------- featured book ---------- */
.featured { background: var(--paper-2); }
.featured-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 60px;
  align-items: center;
}
.featured-cover img {
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
}
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 5px 13px;
  margin-bottom: 18px;
}
.featured h3 { font-size: clamp(30px, 4vw, 46px); margin-bottom: 6px; }
.featured .series-tag { font-size: 14px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 20px; }
.featured p { font-size: 18px; color: var(--ink-soft); }

/* ---------- book cards ---------- */
.books-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
}
.book-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease;
}
.book-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.book-cover {
  background: var(--paper-2);
  padding: 26px 26px 0;
  display: flex;
  justify-content: center;
}
.book-cover img {
  width: 190px;
  border-radius: 5px;
  box-shadow: var(--shadow);
}
.book-body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.book-series { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin-bottom: 8px; }
.book-body h3 { font-size: 23px; margin-bottom: 10px; }
.book-body p { font-size: 15px; color: var(--muted); flex: 1; }
.book-actions { margin-top: 16px; }

/* series section on books page */
.series-block { margin-bottom: 30px; }
.series-block:last-child { margin-bottom: 0; }
.series-title { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.series-title h2 { font-size: clamp(26px,3.4vw,38px); margin: 0; }
.series-title .as { font-size: 14px; color: var(--muted); letter-spacing: .04em; }
.series-intro { color: var(--muted); max-width: 70ch; margin-bottom: 34px; font-size: 17px; }

/* ---------- about ---------- */
.about-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 60px;
  align-items: start;
}
.about-portrait { position: sticky; top: 100px; }
.about-portrait img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.about-portrait .cap { font-size: 13px; color: var(--muted); margin-top: 12px; text-align: center; }
.about-body h2 { font-size: clamp(28px,3.6vw,40px); }
.about-body .big { font-size: 21px; color: var(--ink-soft); font-family: var(--font-serif); line-height: 1.4; }
.pen-names { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 30px 0; }
.pen { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; background: var(--card); }
.pen h4 { font-size: 15px; font-family: var(--font-sans); text-transform: uppercase; letter-spacing: .1em; color: var(--accent); margin-bottom: 6px; }
.pen p { font-size: 15px; color: var(--muted); margin: 0; }

/* ---------- newsletter band ---------- */
.cta-band { background: var(--ink); color: #fff; }
.cta-band .wrap { padding-top: 70px; padding-bottom: 70px; }
.cta-inner { max-width: 620px; }
.cta-band h2 { color: #fff; font-size: clamp(28px,4vw,42px); }
.cta-band p { color: rgba(255,255,255,.72); font-size: 18px; }

/* ---------- forms ---------- */
.form { margin-top: 26px; }
.form-row { display: flex; gap: 12px; flex-wrap: wrap; }
.field { margin-bottom: 16px; flex: 1; min-width: 200px; }
.field label { display: block; font-size: 13px; font-weight: 600; letter-spacing: .04em; margin-bottom: 7px; color: var(--ink-soft); }
.cta-band .field label { color: rgba(255,255,255,.75); }
input, textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 16px;
  padding: 13px 15px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  transition: border-color .2s, box-shadow .2s;
}
input:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(143,45,45,.14); }
textarea { min-height: 140px; resize: vertical; }
.inline-form { display: flex; gap: 12px; flex-wrap: wrap; align-items: stretch; }
.inline-form input { flex: 1; min-width: 240px; }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 12px; }
.cta-band .form-note { color: rgba(255,255,255,.55); }
.form-msg { font-size: 15px; margin-top: 14px; font-weight: 500; min-height: 22px; }
.form-msg.ok { color: #2f7d4f; }
.form-msg.err { color: var(--accent); }
.cta-band .form-msg.ok { color: #8fe3b0; }
.cta-band .form-msg.err { color: #f0a3a3; }

/* ---------- blog ---------- */
.post-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 30px; }
.post-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 30px 28px;
  box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s;
  cursor: pointer;
  display: block;
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.post-card .date { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.post-card h3 { font-size: 25px; margin: 10px 0 8px; }
.post-card p { color: var(--muted); font-size: 15px; margin: 0; }
.post-tags { margin-top: 16px; display: flex; gap: 8px; flex-wrap: wrap; }
.tag { font-size: 12px; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 3px 11px; }

.article { max-width: 720px; margin: 0 auto; }
.article .back { font-size: 14px; color: var(--accent); font-weight: 600; margin-bottom: 24px; display: inline-block; }
.article .date { font-size: 14px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.article h1 { font-size: clamp(32px,5vw,52px); margin: 12px 0 24px; }
.article-body { font-size: 18px; color: var(--ink-soft); }
.article-body h2 { font-size: 30px; margin: 40px 0 14px; color: var(--ink); }
.article-body h3 { font-size: 23px; margin: 30px 0 10px; color: var(--ink); }
.article-body p { margin-bottom: 1.3em; }
.article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-body blockquote { border-left: 3px solid var(--accent); margin: 24px 0; padding: 4px 22px; color: var(--muted); font-family: var(--font-serif); font-size: 21px; font-style: italic; }
.article-body ul, .article-body ol { padding-left: 22px; margin-bottom: 1.3em; }
.article-body li { margin-bottom: .5em; }
.article-body img { border-radius: var(--radius); margin: 24px 0; box-shadow: var(--shadow); }
.article-body code { background: var(--paper-2); padding: 2px 6px; border-radius: 5px; font-size: .9em; }

.empty-state { text-align: center; padding: 60px 0; color: var(--muted); }

/* ---------- social ---------- */
.socials { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }
.social-link {
  display: inline-flex; align-items: center; gap: 9px;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 10px 18px; font-size: 14px; font-weight: 600; color: var(--ink-soft);
  transition: border-color .2s, color .2s, background .2s;
}
.social-link:hover { border-color: var(--ink); color: var(--ink); background: var(--card); }
.social-link svg { width: 17px; height: 17px; }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.7); padding: 64px 0 34px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; margin-bottom: 44px; }
.site-footer .brand { color: #fff; font-size: 24px; }
.site-footer .brand span { color: var(--gold); }
.footer-tag { color: rgba(255,255,255,.6); max-width: 34ch; margin-top: 14px; font-size: 15px; }
.footer-col h5 { color: #fff; font-family: var(--font-sans); font-size: 13px; text-transform: uppercase; letter-spacing: .12em; margin: 0 0 16px; }
.footer-col a { display: block; color: rgba(255,255,255,.66); font-size: 15px; margin-bottom: 11px; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; color: rgba(255,255,255,.5); }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 940px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-stack { order: -1; }
  .hero-stack img { width: 240px; transform: none; }
  .featured-grid { grid-template-columns: 1fr; gap: 34px; }
  .featured-cover { max-width: 280px; }
  .books-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 34px; }
  .about-portrait { position: static; max-width: 320px; }
  .post-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .wrap { padding: 0 20px; }
  .nav-links {
    position: fixed; top: 70px; right: 0; left: 0;
    flex-direction: column; align-items: flex-start; gap: 4px;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 14px 24px 24px; transform: translateY(-140%); transition: transform .3s ease;
    box-shadow: var(--shadow);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 10px 0; width: 100%; }
  .nav-links a.active::after { display: none; }
  .nav-cta { margin: 8px 0 0; }
  .nav-toggle { display: block; }
  .books-grid { grid-template-columns: 1fr; }
  .book-cover img { width: 200px; }
  .pen-names { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 20px; }
  .section-pad { padding: 56px 0; }
}