/* ==========================================================
   Habakkuk Books — Stylesheet
   ========================================================== */

:root {
  --black: #0b0a0a;
  --surface: #141212;
  --surface-2: #1b1818;
  --line: rgba(201, 164, 92, 0.18);
  --white: #f6f2ea;
  --text: #d9d3c8;
  --muted: #9b948a;
  --burgundy: #7a1f2b;
  --burgundy-bright: #9e2a3a;
  --gold: #c9a45c;
  --gold-soft: #e2c88f;

  --serif: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  --sans: "Inter", "Helvetica Neue", Arial, sans-serif;

  --max: 1180px;
  --radius: 4px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--black);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--gold); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--gold-soft); }

h1, h2, h3, h4 {
  font-family: var(--serif);
  color: var(--white);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: .01em;
}
h1 { font-size: clamp(2.6rem, 7vw, 5rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3rem); }
h3 { font-size: 1.55rem; }
p  { margin: 0 0 1.1em; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .container { padding: 0 32px; } }

.eyebrow {
  display: inline-block;
  font-family: var(--sans);
  font-size: .72rem;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.ornament {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--gold);
  margin: 1.4rem 0;
}
.ornament::before,
.ornament::after {
  content: "";
  height: 1px;
  width: 56px;
  background: linear-gradient(90deg, transparent, var(--gold));
}
.ornament::after { background: linear-gradient(90deg, var(--gold), transparent); }
.ornament span { font-size: .8rem; }
.center .ornament { justify-content: center; }
.center { text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .95em 1.9em;
  font-family: var(--sans);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  border: 1px solid var(--burgundy-bright);
  background: var(--burgundy);
  color: var(--white);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background .25s ease, border-color .25s ease, color .25s ease, transform .25s ease;
}
.btn:hover { background: var(--burgundy-bright); color: var(--white); transform: translateY(-1px); }
.btn-outline { background: transparent; border-color: var(--gold); color: var(--gold); }
.btn-outline:hover { background: var(--gold); color: var(--black); border-color: var(--gold); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 10, 10, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: .4em;
  font-family: var(--serif);
  font-size: 1.6rem;
  color: var(--white);
  letter-spacing: .04em;
}
.brand em { font-style: italic; color: var(--gold); }
.brand:hover { color: var(--white); }

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 10px;
  cursor: pointer;
}
.nav-toggle span { width: 24px; height: 1.5px; background: var(--white); transition: transform .3s ease, opacity .3s ease; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.site-nav {
  position: fixed;
  top: 76px;
  left: 0;
  right: 0;
  background: var(--black);
  border-bottom: 1px solid var(--line);
  display: none;
}
.nav-open .site-nav { display: block; }
.site-nav ul { list-style: none; margin: 0; padding: 12px 16px 24px; }
.site-nav a {
  display: block;
  padding: 14px 0;
  font-size: .8rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--text);
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--gold); }

@media (min-width: 860px) {
  .nav-toggle { display: none; }
  .site-nav { position: static; display: block; background: none; border: 0; }
  .site-nav ul { display: flex; gap: 36px; padding: 0; }
  .site-nav a { padding: 6px 0; border: 0; position: relative; }
  .site-nav a::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
    background: var(--gold); transform: scaleX(0); transition: transform .3s ease;
  }
  .site-nav a:hover::after,
  .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 110px 0 120px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 85% 20%, rgba(122, 31, 43, 0.35), transparent 70%),
    radial-gradient(ellipse 50% 50% at 10% 90%, rgba(201, 164, 92, 0.08), transparent 70%);
  pointer-events: none;
}
.hero .container { position: relative; }
.hero h1 em { font-style: italic; color: var(--gold); }
.hero p.lead { font-size: 1.12rem; max-width: 560px; color: var(--text); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 2.2rem; }

.page-hero { padding: 80px 0 70px; text-align: center; }
.page-hero p { max-width: 620px; margin: 0 auto; color: var(--muted); }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { margin-bottom: 52px; }
.section-head p { color: var(--muted); max-width: 600px; }
.section-head.center p { margin: 0 auto; }
.section-foot { margin-top: 52px; text-align: center; }

/* ---------- Book grid & cards ---------- */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 40px 28px;
}
.book-card {
  display: flex;
  flex-direction: column;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.book-card:hover { transform: translateY(-4px); border-color: rgba(201,164,92,.45); box-shadow: var(--shadow); }

.cover {
  position: relative;
  aspect-ratio: 2 / 3;
  background: linear-gradient(160deg, #221d1d, #121010);
  overflow: hidden;
}
.cover img { width: 100%; height: 100%; object-fit: cover; }
.cover-empty {
  position: absolute;
  inset: 14px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 16px;
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--gold);
  font-style: italic;
}

.book-body { display: flex; flex-direction: column; flex: 1; padding: 22px 22px 24px; }
.book-body h3 { font-size: 1.45rem; margin-bottom: .35em; }
.book-body .author { font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); margin-bottom: .9em; }
.book-body .desc { font-size: .92rem; color: var(--muted); flex: 1; }
.book-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 1.2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}
.price { font-family: var(--serif); font-size: 1.4rem; color: var(--gold-soft); }
.book-meta .btn { padding: .75em 1.2em; font-size: .7rem; }

/* Empty state */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
}
.empty-state h3 { color: var(--white); }
.empty-state p { color: var(--muted); max-width: 440px; margin: 0 auto; }

/* ---------- Book detail ---------- */
.book-detail { display: grid; gap: 48px; padding-top: 72px; padding-bottom: 96px; }
.book-detail > .cover { width: 100%; max-width: 340px; margin: 0 auto; }
@media (min-width: 860px) { .book-detail { grid-template-columns: 380px 1fr; gap: 72px; align-items: start; } }
.book-detail .cover { border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius); }
@media (min-width: 860px) { .book-detail > .cover { max-width: none; position: sticky; top: 110px; } }
.book-detail h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); }
.book-detail .subtitle { font-family: var(--serif); font-style: italic; font-size: 1.4rem; color: var(--text); margin-top: -.2em; }
.book-detail .author { font-size: .78rem; letter-spacing: .24em; text-transform: uppercase; color: var(--gold); }
.book-detail .price { font-size: 2rem; margin: 1.2rem 0 1.6rem; display: block; }
.book-detail .long-desc p { font-size: 1.02rem; }
.details-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 18px 28px;
  margin: 2.2rem 0;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.details-list dt { font-size: .68rem; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); }
.details-list dd { margin: .2em 0 0; color: var(--white); font-family: var(--serif); font-size: 1.15rem; }
.back-link { display: inline-block; margin-top: 2rem; font-size: .75rem; letter-spacing: .2em; text-transform: uppercase; }

/* ---------- About ---------- */
.about-grid { display: grid; gap: 48px; }
@media (min-width: 860px) { .about-grid { grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; } }
.about-panel {
  position: relative;
  padding: 48px 36px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(122,31,43,.25), rgba(20,18,18,1) 60%);
  border-radius: var(--radius);
}
.about-panel blockquote {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-style: italic;
  color: var(--white);
  line-height: 1.35;
}
.values { display: grid; gap: 28px; margin-top: 64px; }
@media (min-width: 720px) { .values { grid-template-columns: repeat(3, 1fr); } }
.value { padding: 32px 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2); }
.value .num { font-family: var(--serif); color: var(--gold); font-size: 1.1rem; display: block; margin-bottom: .6rem; }
.value p { color: var(--muted); margin: 0; font-size: .95rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; gap: 48px; }
@media (min-width: 860px) { .contact-grid { grid-template-columns: 1fr 1.3fr; gap: 72px; } }
.contact-list { list-style: none; padding: 0; margin: 2rem 0 0; }
.contact-list li { padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-list .label { display: block; font-size: .68rem; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); }
.contact-list .value-text { font-family: var(--serif); font-size: 1.3rem; color: var(--white); }

.form { display: grid; gap: 20px; padding: 36px 28px; border: 1px solid var(--line); background: var(--surface-2); border-radius: var(--radius); }
@media (min-width: 720px) { .form { padding: 44px 40px; } .form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; } }
.form .row { display: grid; gap: 20px; }
.field label { display: block; font-size: .7rem; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.field input,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--black);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  color: var(--white);
  font: inherit;
  font-size: 1rem;
  transition: border-color .2s ease;
}
.field textarea { min-height: 160px; resize: vertical; }
.field input:focus,
.field textarea:focus { outline: none; border-color: var(--gold); }
.form-note { font-size: .85rem; color: var(--muted); margin: 0; }

/* ---------- CTA band ---------- */
.cta-band { padding: 88px 0; text-align: center; background: linear-gradient(180deg, var(--black), rgba(122,31,43,.22)); border-top: 1px solid var(--line); }
.cta-band p { color: var(--muted); max-width: 520px; margin: 0 auto 2rem; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 56px 0 36px; background: var(--black); }
.footer-inner { display: grid; gap: 32px; }
@media (min-width: 720px) { .footer-inner { grid-template-columns: 2fr 1fr; align-items: start; } }
.footer-inner p { color: var(--muted); max-width: 380px; font-size: .92rem; }
.footer-nav { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-nav a { font-size: .75rem; letter-spacing: .2em; text-transform: uppercase; color: var(--text); }
.footer-nav a:hover { color: var(--gold); }
.copyright { margin-top: 44px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.05); font-size: .78rem; color: var(--muted); text-align: center; }

/* Accessibility */
:focus-visible { outline: 1px solid var(--gold); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }