/* ── Reset & Tokens ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #FAFAF6;
  --surface:     #FFFFFF;
  --nav-bg:      #1C1209;
  --nav-link:    #D4C4AD;
  --nav-active:  #E8A96A;
  --accent:      #8B4513;
  --accent-h:    #A0531A;
  --accent-lt:   #F4EDE3;
  --text:        #2C2416;
  --text-2:      #6B5A48;
  --border:      #E8E2D8;
  --serif:       'Playfair Display', Georgia, 'Times New Roman', serif;
  --sans:        -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --radius:      8px;
  --shadow:      0 2px 16px rgba(44,36,22,.10);
  --shadow-lg:   0 8px 40px rgba(44,36,22,.15);
  --max-w:       1100px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

img { display: block; max-width: 100%; height: auto; }
a   { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-h); text-decoration: underline; }

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--serif);
  color: var(--text);
  line-height: 1.25;
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* ── Layout helpers ─────────────────────────────────────────── */
.container  { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.section    { padding: 5rem 0; }
.section-sm { padding: 3rem 0; }

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
  display: flex;
  align-items: center;
  gap: .55rem;
}
.nav-logo:hover { text-decoration: none; color: var(--nav-active); }
.nav-logo-icon { font-size: 1.5rem; }

.nav-links {
  display: flex;
  list-style: none;
  gap: .25rem;
}
.nav-links a {
  color: var(--nav-link);
  font-size: .85rem;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: .4rem .7rem;
  border-radius: var(--radius);
  transition: color .2s, background .2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--nav-active);
  background: rgba(255,255,255,.07);
  text-decoration: none;
}

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: .4rem;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--nav-link);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0; right: 0;
    background: var(--nav-bg);
    flex-direction: column;
    padding: 1rem 1.5rem 1.5rem;
    gap: .25rem;
    border-bottom: 1px solid rgba(255,255,255,.1);
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: .9rem; padding: .6rem .75rem; }
}

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/bookreader1.jpg');
  background-size: cover;
  background-position: center 30%;
  filter: brightness(.45);
}
.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  max-width: 680px;
}
.hero-eyebrow {
  font-family: var(--serif);
  font-size: .95rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--nav-active);
  margin-bottom: .75rem;
}
.hero h1 { color: #fff; margin-bottom: 1.25rem; }
.hero p  { font-size: 1.15rem; color: rgba(255,255,255,.82); margin-bottom: 2rem; max-width: 520px; }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  transition: background .2s, transform .15s, box-shadow .2s;
  cursor: pointer;
  border: none;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 20px rgba(139,69,19,.35);
}
.btn-primary:hover { background: var(--accent-h); color: #fff; box-shadow: 0 6px 26px rgba(139,69,19,.45); }

.btn-ghost {
  background: rgba(255,255,255,.12);
  color: #fff;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,.25);
}
.btn-ghost:hover { background: rgba(255,255,255,.2); color: #fff; }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}
.btn-outline:hover { background: var(--accent); color: #fff; }

.btn-group { display: flex; flex-wrap: wrap; gap: 1rem; }

/* ── Section headings ────────────────────────────────────────── */
.section-head { text-align: center; margin-bottom: 3rem; }
.section-head h2 { margin-bottom: .6rem; }
.section-head p  { color: var(--text-2); font-size: 1.05rem; max-width: 540px; margin: 0 auto; }
.divider {
  width: 48px; height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin: .75rem auto 0;
}

/* ── Feature grid ────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  transition: box-shadow .2s, transform .2s;
}
.feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.feature-icon { font-size: 2rem; margin-bottom: .75rem; }
.feature-card h3 { margin-bottom: .5rem; font-size: 1.1rem; }
.feature-card p  { color: var(--text-2); font-size: .9rem; margin: 0; }

/* ── Formats strip ───────────────────────────────────────────── */
.formats-strip {
  background: var(--nav-bg);
  padding: 2.5rem 0;
  text-align: center;
}
.formats-strip h3 { color: var(--nav-active); font-family: var(--serif); margin-bottom: 1rem; }
.format-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .5rem;
}
.format-tag {
  background: rgba(255,255,255,.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 100px;
  padding: .3rem .9rem;
  font-size: .82rem;
  font-weight: 500;
  letter-spacing: .04em;
}

/* ── Screenshot band ─────────────────────────────────────────── */
.screenshot-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.screenshot-band img { width: 100%; height: 320px; object-fit: cover; object-position: center top; }
@media (max-width: 640px) {
  .screenshot-band { grid-template-columns: 1fr; }
  .screenshot-band img { height: 220px; }
}

/* ── About page layout ───────────────────────────────────────── */
.about-hero {
  position: relative;
  height: 420px;
  overflow: hidden;
  border-radius: 0 0 var(--radius) var(--radius);
}
.about-hero img { width: 100%; height: 100%; object-fit: cover; object-position: center 20%; }
.about-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(28,18,9,.75) 0%, transparent 60%);
  display: flex; align-items: flex-end;
  padding: 2.5rem 2rem;
}
.about-hero-overlay h1 { color: #fff; }

/* ── Download cards ──────────────────────────────────────────── */
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.download-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  box-shadow: var(--shadow);
  transition: box-shadow .2s, transform .2s;
}
.download-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.download-card-icon { font-size: 2.5rem; }
.download-card h3 { font-size: 1.15rem; margin: 0; }
.download-card p  { color: var(--text-2); font-size: .9rem; flex: 1; margin: 0; }
.download-card .btn { margin-top: auto; align-self: flex-start; }

/* ── DRM page ────────────────────────────────────────────────── */
.prose { max-width: 720px; }
.prose h2 { margin: 2rem 0 .75rem; }
.prose h3 { margin: 1.5rem 0 .5rem; color: var(--accent); }
.prose ul  { margin: .5rem 0 1rem 1.5rem; }
.prose li  { margin-bottom: .4rem; }
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: .75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--accent-lt);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--text-2);
}

/* ── Publisher list ──────────────────────────────────────────── */
.pub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.pub-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .9rem 1.1rem;
  font-size: .9rem;
  box-shadow: 0 1px 6px rgba(44,36,22,.07);
  transition: box-shadow .2s;
}
.pub-card:hover { box-shadow: var(--shadow); border-color: var(--accent); }
a.pub-card { cursor: pointer; }
a.pub-card strong { color: var(--text); }
a.pub-card:hover strong { color: var(--accent); text-decoration: none; }
a.pub-card span { color: var(--text-2); }
.pub-card strong { display: block; color: var(--text); margin-bottom: .15rem; }
.pub-card span { color: var(--text-2); font-size: .82rem; }

/* ── Contact form ────────────────────────────────────────────── */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: .4rem;
  letter-spacing: .03em;
  text-transform: uppercase;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: .7rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1rem;
  transition: border-color .2s, box-shadow .2s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(139,69,19,.12);
}
.form-group textarea { resize: vertical; min-height: 130px; }

/* ── Footer ──────────────────────────────────────────────────── */
.footer {
  background: var(--nav-bg);
  color: var(--nav-link);
  padding: 3rem 0 2rem;
  margin-top: auto;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2.5rem;
}
.footer-brand { max-width: 280px; }
.footer-brand .nav-logo { margin-bottom: .75rem; font-size: 1.2rem; }
.footer-brand p { font-size: .88rem; color: rgba(212,196,173,.65); margin: 0; }

.footer-links h4 {
  color: #fff;
  font-size: .8rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .75rem;
  font-family: var(--sans);
  font-weight: 700;
}
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: .4rem; }
.footer-links a { color: var(--nav-link); font-size: .88rem; }
.footer-links a:hover { color: var(--nav-active); text-decoration: none; }

.footer-social { display: flex; gap: .75rem; margin-top: .75rem; }
.social-btn {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  display: flex; align-items: center; justify-content: center;
  color: var(--nav-link);
  font-size: .85rem;
  transition: background .2s, color .2s;
}
.social-btn:hover { background: var(--accent); color: #fff; text-decoration: none; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: .75rem;
  font-size: .82rem;
  color: rgba(212,196,173,.5);
}
.footer-bottom a { color: rgba(212,196,173,.6); }
.footer-bottom a:hover { color: var(--nav-active); }

/* ── Page hero (inner pages) ─────────────────────────────────── */
.page-hero {
  background: var(--nav-bg);
  padding: 4rem 0 3.5rem;
  text-align: center;
}
.page-hero h1 { color: #fff; margin-bottom: .6rem; }
.page-hero p  { color: rgba(212,196,173,.75); max-width: 500px; margin: 0 auto; }

/* ── Misc ────────────────────────────────────────────────────── */
.tag {
  display: inline-block;
  background: var(--accent-lt);
  color: var(--accent);
  border-radius: 100px;
  padding: .2rem .75rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.callout {
  background: var(--accent-lt);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  font-size: .95rem;
  color: var(--text);
}

.req-table { width: 100%; border-collapse: collapse; font-size: .92rem; margin: 1rem 0 1.5rem; }
.req-table th, .req-table td { text-align: left; padding: .6rem .9rem; border-bottom: 1px solid var(--border); }
.req-table th { background: var(--accent-lt); color: var(--accent); font-weight: 700; font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; }
.req-table tr:last-child td { border-bottom: none; }

@media (max-width: 640px) {
  .section { padding: 3rem 0; }
  .btn-group { flex-direction: column; }
  .footer-inner { flex-direction: column; gap: 1.5rem; }
}