:root {
  --wp-ink: #0b1d2a;
  --wp-cream: #faf6ef;
  --wp-cream-2: #f3ecdf;
  --wp-teal: #0f766e;
  --wp-teal-deep: #134e4a;
  --wp-amber: #d97706;
  --wp-amber-soft: #fbbf24;
  --wp-rose: #be185d;
  --wp-line: #e7dfd0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--wp-cream);
  color: var(--wp-ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.font-display {
  font-family: "Fraunces", "Playfair Display", Georgia, serif;
  font-optical-sizing: auto;
  font-variation-settings: "SOFT" 50, "WONK" 0;
  letter-spacing: -0.01em;
}

/* Hero grid background */
.hero-bg {
  position: relative;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(217, 119, 6, 0.18), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(15, 118, 110, 0.18), transparent 60%),
    var(--wp-cream);
  overflow: hidden;
}
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(11, 29, 42, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 29, 42, 0.06) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 40%, transparent 75%);
  pointer-events: none;
}

/* Series accent ribbon */
.series-themed { --accent: var(--wp-teal); --accent-soft: #ccfbf1; }
.series-states { --accent: var(--wp-amber); --accent-soft: #fef3c7; }
.series-countries { --accent: var(--wp-rose); --accent-soft: #fce7f3; }
.series-cryptograms { --accent: #6d28d9; --accent-soft: #ede9fe; }
.series-yearly { --accent: #475569; --accent-soft: #f1f5f9; }
.series-maze { --accent: #047857; --accent-soft: #d1fae5; }

.book-card {
  background: white;
  border: 1px solid var(--wp-line);
  border-radius: 14px;
  padding: 1rem 1rem 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
  position: relative;
  overflow: hidden;
}
.book-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent, var(--wp-teal));
  opacity: 0.85;
}
.book-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px -18px rgba(11, 29, 42, 0.35);
  border-color: var(--accent, var(--wp-teal));
}
.book-card .cover {
  margin: -1rem -1rem 0;
  aspect-ratio: 6 / 9;
  background: var(--wp-cream-2);
  overflow: hidden;
  border-bottom: 1px solid var(--wp-line);
}
.book-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.book-card .vol-badge {
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #64748b;
  font-weight: 600;
}
.book-card .title {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.25;
  color: var(--wp-ink);
}
.book-card .title a,
.book-card .title-link {
  color: inherit;
  text-decoration: none;
}
.book-card .title a:hover,
.book-card .title-link:hover {
  color: var(--accent, var(--wp-teal));
}
.book-card a.cover {
  display: block;
  text-decoration: none;
}
.book-card .amazon-btn {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  background: var(--wp-ink);
  color: white;
  text-decoration: none;
  transition: background 140ms ease;
}
.book-card .amazon-btn:hover {
  background: var(--accent, var(--wp-teal));
}
.book-card .amazon-btn svg { width: 14px; height: 14px; }

.coming-soon {
  font-size: 0.7rem;
  color: #92400e;
  background: #fef3c7;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Series header chip */
.series-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--accent-soft, #ccfbf1);
  color: var(--accent, var(--wp-teal));
}
.series-chip .dot {
  width: 6px; height: 6px; border-radius: 999px;
  background: var(--accent, var(--wp-teal));
}

/* Filter pills */
.filter-pill {
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--wp-line);
  background: white;
  color: var(--wp-ink);
  cursor: pointer;
  transition: all 140ms ease;
}
.filter-pill:hover { border-color: var(--wp-ink); }
.filter-pill.active {
  background: var(--wp-ink);
  color: white;
  border-color: var(--wp-ink);
}

/* Search input */
.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border: 1px solid var(--wp-line);
  border-radius: 10px;
  background: white;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}
.search-input:focus {
  border-color: var(--wp-teal);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

/* Logo mark */
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--wp-teal) 0%, var(--wp-teal-deep) 100%);
  color: white;
  font-family: "Fraunces", serif;
  font-weight: 700;
  font-size: 1.1rem;
}

/* Subtle divider */
.hr-soft { height: 1px; background: var(--wp-line); border: 0; }

/* Featured-card cover frame */
.cover-frame {
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--wp-line);
  box-shadow: 0 30px 60px -30px rgba(11, 29, 42, 0.45);
  aspect-ratio: 6 / 9;
  display: grid;
  place-items: center;
}
.cover-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* Stats counter row */
.stat-num {
  font-family: "Fraunces", Georgia, serif;
  font-size: 2.25rem;
  font-weight: 600;
  color: var(--wp-ink);
  line-height: 1;
}
.stat-label {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
  font-weight: 600;
  margin-top: 0.4rem;
}

/* Series card preview thumbnails (home page) */
.series-card {
  background: white;
  border: 1px solid var(--wp-line);
  border-radius: 18px;
  padding: 1.5rem 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
  position: relative;
  overflow: hidden;
}
.series-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent, var(--wp-teal));
}
.series-card:hover {
  border-color: var(--accent, var(--wp-ink));
  transform: translateY(-2px);
  box-shadow: 0 14px 32px -20px rgba(11, 29, 42, 0.35);
}
.mini-covers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-top: 0.25rem;
}
.mini-cover {
  aspect-ratio: 6 / 9;
  border-radius: 8px;
  background: var(--wp-cream-2);
  overflow: hidden;
  border: 1px solid var(--wp-line);
  display: block;
  transition: transform 160ms ease, border-color 160ms ease;
}
.series-card:hover .mini-cover {
  border-color: var(--accent, var(--wp-teal));
}
.mini-cover img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.mini-cover.placeholder {
  display: grid;
  place-items: center;
  color: #94a3b8;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background:
    repeating-linear-gradient(
      45deg,
      var(--wp-cream-2),
      var(--wp-cream-2) 6px,
      #ede4d2 6px,
      #ede4d2 12px
    );
}
.series-card .meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 0.5rem;
}
.series-card .explore-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent, var(--wp-teal));
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 160ms ease;
}
.series-card:hover .explore-link { gap: 0.55rem; }

/* Footer */
footer a:hover { color: var(--wp-teal); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}