/* Dogeared Books — a small family reading-room, not the mainframe brand.
   Warm reading-lamp wood tones with a parchment card catalog underneath. */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=Lora:ital,wght@0,400;0,500;0,600;1,400&family=Courier+Prime:wght@400;700&display=swap');

:root {
  --cocoa: #2b1a10;
  --cocoa-2: #3a2617;
  --cocoa-3: #4a3220;
  --parchment: #f2e4c8;
  --parchment-2: #e6d2a4;
  --parchment-3: #d8bd85;
  --leather: #7c332c;
  --leather-2: #963f34;
  --brass: #c4923e;
  --brass-bright: #ddb166;
  --sage: #5c6b47;
  --ink: #2a1a10;
  --ink-soft: #4a3320;

  --bg: var(--cocoa);
  --bg-panel: var(--cocoa-2);
  --bg-panel-2: var(--cocoa-3);
  --border: #5a4128;
  --text: var(--parchment);
  --text-dim: #c9ad82;
  --accent: var(--brass);
  --accent-bright: var(--brass-bright);

  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body: 'Lora', Georgia, serif;
  --font-stamp: 'Courier Prime', 'SF Mono', Menlo, monospace;

  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 900px 500px at 20% -10%, rgba(196, 146, 62, 0.10), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 10%, rgba(124, 51, 44, 0.14), transparent 55%);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-bright); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 3px;
}

.wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- header / reading lamp hero ---------- */
.hero {
  position: relative;
  border-bottom: 1px solid var(--border);
  padding: 4.5rem 0 3.5rem;
  overflow: hidden;
}
.hero::before {
  /* a soft lamp-glow above the title */
  content: '';
  position: absolute;
  top: -140px;
  left: 50%;
  transform: translateX(-50%);
  width: 640px;
  height: 320px;
  background: radial-gradient(ellipse at center, rgba(221, 177, 102, 0.25), transparent 70%);
  pointer-events: none;
}
.hero .wrap { position: relative; }

.eyebrow {
  font-family: var(--font-stamp);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin: 0 0 1.4rem;
}
.eyebrow::before { content: '\201C '; color: var(--accent); }

.hero h1 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 600;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  letter-spacing: -0.01em;
  margin: 0 0 0.9rem;
  color: var(--parchment);
}
.hero h1 em {
  font-style: italic;
  font-weight: 500;
  color: var(--accent-bright);
}

.hero .tagline {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  max-width: 46ch;
  color: var(--text-dim);
  margin: 0;
}

/* ---------- shelf / category nav ---------- */
.shelf-nav {
  border-bottom: 1px solid var(--border);
  background: var(--bg-panel);
}
.shelf-nav .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}
.shelf-label {
  font-family: var(--font-stamp);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-right: 0.4rem;
}
.shelf-tab {
  font-family: var(--font-stamp);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  padding: 0.5em 0.9em;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
}
.shelf-tab:hover { color: var(--parchment); border-color: var(--accent); }
.shelf-tab.active {
  color: var(--ink);
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: inset 0 -2px 0 rgba(0,0,0,0.2);
}

/* ---------- book grid ---------- */
section#books { padding: 3.5rem 0 5rem; }

.book-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}
@media (max-width: 720px) {
  .book-grid { grid-template-columns: 1fr; }
}

.book-card {
  background: var(--parchment);
  color: var(--ink);
  border: 1px solid var(--parchment-3);
  box-shadow: 0 10px 24px rgba(15, 8, 3, 0.35);
  display: flex;
  flex-direction: column;
}

.cover-wrap {
  position: relative;
  background: var(--parchment-2);
  border-bottom: 1px solid var(--parchment-3);
  overflow: hidden;
}
.cover-wrap .cover {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: contain;
  display: block;
}

/* signature: a literal dog-eared corner. Lifts on hover/focus to
   peek at the shelf mark (category) tucked underneath it. */
.shelfmark {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  max-width: 8rem;
  font-family: var(--font-stamp);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: right;
  color: var(--ink-soft);
  background: var(--parchment);
  border: 1px solid var(--parchment-3);
  padding: 0.3em 0.5em;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 1;
}
.dogear {
  position: absolute;
  top: 0;
  right: 0;
  width: 3.4rem;
  height: 3.4rem;
  z-index: 2;
  background: linear-gradient(135deg, var(--parchment) 45%, var(--parchment-3) 100%);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  box-shadow: -4px 4px 8px rgba(15, 8, 3, 0.35);
  transform-origin: top right;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.book-card:hover .dogear,
.book-card:focus-within .dogear {
  transform: rotate(-22deg) translate(-2px, 2px);
}
.book-card:hover .shelfmark,
.book-card:focus-within .shelfmark {
  opacity: 1;
  transform: translateY(0);
}

.book-card .body {
  padding: 1.4rem 1.5rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  flex-grow: 1;
}

.book-card h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  line-height: 1.3;
  margin: 0;
  color: var(--ink);
}

.book-card .summary {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
  flex-grow: 1;
}

.book-card .category-tag {
  align-self: flex-start;
  font-family: var(--font-stamp);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--leather);
  border: 1px solid var(--leather);
  padding: 0.25em 0.6em;
  margin: 0;
}

.book-card .meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  border-top: 1px dashed var(--parchment-3);
  padding-top: 0.85rem;
}

.book-card .price {
  font-family: var(--font-stamp);
  font-weight: 700;
  font-size: 1rem;
  color: var(--leather);
}

.book-card .formats {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.book-card .formats span {
  font-family: var(--font-stamp);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  border: 1px solid var(--parchment-3);
  padding: 0.2em 0.55em;
  color: var(--ink-soft);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  font-family: var(--font-stamp);
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--parchment);
  background: var(--leather);
  padding: 0.75em 1.2em;
  border: 1px solid var(--leather);
  transition: background 0.15s ease, color 0.15s ease;
}
.btn:hover { background: var(--leather-2); }
.book-card .btn { margin-top: 0.2rem; }

.empty-shelf {
  font-family: var(--font-stamp);
  font-size: 0.85rem;
  color: var(--text-dim);
  padding: 2rem 0;
}

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--border);
  background: var(--bg-panel);
  font-family: var(--font-stamp);
  font-size: 0.78rem;
  color: var(--text-dim);
}
.status-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1.2rem 1.5rem;
  max-width: 920px;
  margin: 0 auto;
}
.status-line a { color: var(--text-dim); }
.status-line a:hover { color: var(--accent-bright); }
.status-line .sep { opacity: 0.4; margin: 0 0.5em; }
.status-line .stamp { color: var(--accent); }