/* ============================================================
   LoroTechz Books — bookstore storefront styles
   Shares the LoroTechz violet palette.
   ============================================================ */
:root {
  --ink: #14101F;
  --violet: #7C2FBF;
  --violet-2: #9D4EDD;
  --grape: #4A1D7A;
  --paper: #FFFFFF;
  --mist: #F6F4FB;
  --mist-2: #EFEAF8;
  --line: #E7E2F0;
  --slate: #6A6480;
  --slate-2: #908AA6;
  --gold: #C9A227;

  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 26px;
  --shadow-sm: 0 1px 2px rgba(20,16,31,.06), 0 1px 3px rgba(20,16,31,.04);
  --shadow: 0 8px 30px rgba(74,29,122,.10);
  --shadow-book: 0 24px 50px rgba(20,16,31,.28);
  --shadow-violet: 0 14px 40px rgba(124,47,191,.28);
  --maxw: 1180px;

  --grad-violet: linear-gradient(135deg, #9D4EDD 0%, #7C2FBF 55%, #4A1D7A 100%);
  --grad-ink: linear-gradient(140deg, #1B1430 0%, #14101F 60%, #0E0A18 100%);

  --font-display: 'Sora', system-ui, sans-serif;
  --font-serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.12; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.7rem); }
h3 { font-size: 1.3rem; }
p { color: var(--slate); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: clamp(48px, 7vw, 90px) 0; }
.section--mist { background: var(--mist); }
.narrow { max-width: 820px; margin: 0 auto; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-weight: 600;
  font-size: .78rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--violet);
}
.eyebrow::before { content: ''; width: 22px; height: 2px; background: var(--violet); border-radius: 2px; }

.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { margin-top: 12px; font-size: 1.05rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-display); font-weight: 600; font-size: .95rem;
  padding: 13px 24px; border-radius: 999px; border: 0; cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--grad-violet); color: #fff; box-shadow: var(--shadow-violet); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-primary, .btn-primary:link, .btn-primary:visited, .btn-primary:hover, .btn-primary:active { color: #fff; }
.btn-amazon { background: #FF9900; color: #14101F; }
.btn-amazon:hover { background: #f59300; transform: translateY(-2px); }
.btn-amazon, .btn-amazon:link, .btn-amazon:visited, .btn-amazon:hover, .btn-amazon:active { color: #14101F; }
.btn-ghost { background: #fff; color: var(--ink); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--violet); color: var(--violet); transform: translateY(-2px); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { transform: translateY(-2px); }
.btn-dark, .btn-dark:link, .btn-dark:visited, .btn-dark:hover { color: #fff; }
.btn-block { width: 100%; }
.btn-lg { padding: 16px 30px; font-size: 1rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.82); backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand img { width: 36px; height: 36px; object-fit: contain; }
.brand-name { font-family: var(--font-display); font-weight: 700; font-size: 1.22rem; letter-spacing: -0.02em; }
.brand-name span { color: var(--violet); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a { font-weight: 500; font-size: .95rem; color: var(--slate); padding: 9px 15px; border-radius: 999px; transition: color .15s, background .15s; }
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--violet); background: var(--mist-2); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; color: var(--ink); }
.nav-toggle svg { width: 28px; height: 28px; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(54px, 8vw, 96px) 0 clamp(40px, 6vw, 72px); overflow: hidden; }
.hero::before {
  content: ''; position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(55% 50% at 85% 8%, rgba(157,78,221,.16), transparent 70%),
    radial-gradient(45% 45% at 5% 90%, rgba(124,47,191,.12), transparent 70%);
}
.hero h1 { margin-bottom: 16px; }
.hero h1 .accent { background: var(--grad-violet); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub { font-size: 1.12rem; max-width: 540px; }
.hero-inner { max-width: 720px; }
.hero-actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }

/* ---------- Book grid ---------- */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 34px 28px;
}
.book-card { display: flex; flex-direction: column; }
.book-cover-wrap {
  position: relative; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 2/3; background: var(--mist-2);
  box-shadow: var(--shadow-book); transition: transform .25s ease;
}
.book-card:hover .book-cover-wrap { transform: translateY(-6px); }
.book-cover-wrap img { width: 100%; height: 100%; object-fit: cover; }
.book-cover-ph {
  position: absolute; inset: 0; display: grid; place-items: center;
  background: var(--grad-ink); padding: 24px; text-align: center;
}
.book-cover-ph span { font-family: var(--font-serif); color: #fff; font-size: 1.3rem; line-height: 1.3; }
.book-badge {
  position: absolute; top: 12px; left: 12px;
  background: var(--gold); color: #14101F; font-family: var(--font-display);
  font-weight: 700; font-size: .68rem; letter-spacing: .04em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 999px;
}
.book-info { padding-top: 16px; }
.book-info h3 { font-family: var(--font-serif); font-size: 1.18rem; font-weight: 600; letter-spacing: -0.01em; }
.book-author { color: var(--slate); font-size: .9rem; margin-top: 3px; }
.book-meta-row { display: flex; align-items: center; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
.book-price { font-family: var(--font-display); font-weight: 700; color: var(--ink); }
.book-price small { color: var(--slate-2); font-weight: 500; font-size: .8rem; }
.lang-pill { font-size: .72rem; font-weight: 600; color: var(--violet); background: var(--mist-2); padding: 3px 9px; border-radius: 999px; }
.book-info .btn { margin-top: 14px; }

/* ---------- Book detail ---------- */
.book-detail { display: grid; grid-template-columns: 360px 1fr; gap: 56px; align-items: start; }
.book-detail-cover { position: sticky; top: 96px; }
.book-detail-cover .book-cover-wrap { box-shadow: var(--shadow-book); }
.book-detail h1 { font-family: var(--font-serif); font-weight: 600; }
.book-detail .subtitle { font-size: 1.15rem; color: var(--slate); margin-top: 8px; font-family: var(--font-serif); font-style: italic; }
.detail-meta { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0 24px; }
.detail-meta .chip { font-size: .82rem; font-weight: 600; color: var(--ink); background: var(--mist); border: 1px solid var(--line); padding: 6px 13px; border-radius: 999px; }
.book-desc p { font-size: 1.06rem; color: #3A3550; margin-bottom: 18px; line-height: 1.75; }

/* ---------- Buy options ---------- */
.buy-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; margin-top: 28px; box-shadow: var(--shadow-sm); }
.buy-box h3 { font-family: var(--font-display); margin-bottom: 18px; }
.buy-option { display: flex; align-items: center; gap: 16px; padding: 18px 0; border-top: 1px solid var(--line); }
.buy-option:first-of-type { border-top: 0; padding-top: 0; }
.buy-icon { flex: none; width: 48px; height: 48px; border-radius: 12px; background: var(--mist-2); color: var(--violet); display: grid; place-items: center; }
.buy-icon svg { width: 24px; height: 24px; }
.buy-text { flex: 1; }
.buy-text strong { font-family: var(--font-display); display: block; font-size: 1rem; }
.buy-text span { font-size: .9rem; color: var(--slate); }
.buy-price { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.buy-option .btn { flex: none; }

/* ---------- QR modal / paperback ---------- */
.qr-card { text-align: center; }
.qr-card img { width: 220px; height: 220px; margin: 0 auto 14px; border-radius: var(--radius-sm); border: 1px solid var(--line); object-fit: contain; background:#fff; }
.payment-note { font-size: .92rem; color: var(--slate); max-width: 360px; margin: 0 auto; }

/* ---------- Forms ---------- */
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 34px; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-family: var(--font-display); font-weight: 600; font-size: .88rem; margin-bottom: 7px; }
.field .hint { font-weight: 400; color: var(--slate-2); font-size: .82rem; }
.field input, .field textarea, .field select {
  width: 100%; font-family: var(--font-body); font-size: .98rem; color: var(--ink);
  padding: 13px 15px; border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  background: var(--mist); transition: border-color .15s, background .15s;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--violet); background: #fff; }
.field textarea { resize: vertical; min-height: 90px; }

.flash { padding: 14px 18px; border-radius: var(--radius-sm); font-size: .95rem; margin-bottom: 22px; font-weight: 500; }
.flash.success { background: #ECFBF3; color: #0F7A4D; border: 1px solid #BCEBD2; }
.flash.error { background: #FDEDED; color: #B42318; border: 1px solid #F6C9C6; }

/* ---------- Steps (order page) ---------- */
.order-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: start; }
.pay-panel { background: var(--mist); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px; position: sticky; top: 96px; }
.order-summary { display: flex; gap: 16px; align-items: center; margin-bottom: 20px; }
.order-summary img { width: 64px; aspect-ratio: 2/3; object-fit: cover; border-radius: 8px; }
.order-summary .book-cover-ph { position: static; width: 64px; aspect-ratio: 2/3; border-radius: 8px; padding: 6px; }
.order-summary .book-cover-ph span { font-size: .7rem; }

/* ---------- Empty ---------- */
.empty { text-align: center; padding: 70px 20px; color: var(--slate); }

/* ---------- Footer ---------- */
.site-footer { background: var(--grad-ink); color: rgba(255,255,255,.7); padding: 54px 0 28px; margin-top: 40px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-brand { display: flex; align-items: center; gap: 11px; }
.footer-brand img { width: 34px; }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-name span { color: var(--violet-2); }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { color: rgba(255,255,255,.7); font-size: .94rem; }
.footer-links a:hover { color: #fff; }
.footer-bottom { padding-top: 22px; font-size: .86rem; color: rgba(255,255,255,.5); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .book-detail { grid-template-columns: 1fr; gap: 32px; }
  .book-detail-cover { position: static; max-width: 300px; }
  .order-grid { grid-template-columns: 1fr; }
  .pay-panel { position: static; order: -1; }
}
@media (max-width: 680px) {
  .nav-links { position: fixed; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 16px; gap: 4px; border-bottom: 1px solid var(--line); transform: translateY(-150%); transition: transform .3s ease; box-shadow: var(--shadow); }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 13px 16px; }
  .nav-toggle { display: block; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .buy-option { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}