/* Quizzman Books — Portal Stylesheet */
:root {
  --qm-book-accent: #8b2626;
  --qm-book-accent-hover: #a33232;
  --qm-book-bg: #f8f6f0;
  --qm-book-surface: #ffffff;
  --qm-book-card-border: rgba(139, 38, 38, 0.12);
  --qm-book-ink: #2b2523;
  --qm-book-muted: #6b635e;
  --qm-book-gold: #c9933b;
}

[data-theme="dark"] {
  --qm-book-accent: #c94a4a;
  --qm-book-accent-hover: #e05e5e;
  --qm-book-bg: #141212;
  --qm-book-surface: #1e1b1a;
  --qm-book-card-border: rgba(201, 74, 74, 0.2);
  --qm-book-ink: #f0ebe6;
  --qm-book-muted: #a69f98;
  --qm-book-gold: #e5b35c;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--qm-book-bg);
  color: var(--qm-book-ink);
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.books-main {
  flex: 1 0 auto;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
  width: 100%;
  box-sizing: border-box;
}

/* Hero Section */
.books-hero {
  text-align: center;
  padding: 2.5rem 1rem 2rem;
  margin-bottom: 2rem;
  background: radial-gradient(circle at 50% 20%, rgba(139, 38, 38, 0.08) 0%, transparent 70%);
  border-radius: 1.5rem;
}

.books-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(139, 38, 38, 0.08);
  border: 1px solid rgba(139, 38, 38, 0.18);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--qm-book-accent);
  margin-bottom: 1rem;
}

.books-hero__icon {
  width: 22px;
  height: 22px;
  vertical-align: middle;
}

.books-hero__title {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 900;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--qm-book-accent) 0%, var(--qm-book-ink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="dark"] .books-hero__title {
  background: linear-gradient(135deg, #ff7a7a 0%, #fff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.books-hero__sub {
  font-size: 1.125rem;
  color: var(--qm-book-muted);
  max-width: 680px;
  margin: 0 auto 1.5rem;
  line-height: 1.6;
}

/* Search bar */
.books-search-wrap {
  max-width: 540px;
  margin: 0 auto 1.5rem;
  position: relative;
}

.books-search-input {
  width: 100%;
  padding: 0.85rem 1.25rem 0.85rem 3rem;
  border-radius: 999px;
  border: 1.5px solid var(--qm-book-card-border);
  background: var(--qm-book-surface);
  color: var(--qm-book-ink);
  font-size: 1rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
  box-sizing: border-box;
  transition: all 0.2s ease;
}

.books-search-input:focus {
  outline: none;
  border-color: var(--qm-book-accent);
  box-shadow: 0 0 0 3px rgba(139, 38, 38, 0.15);
}

.books-search-icon {
  position: absolute;
  left: 1.15rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--qm-book-muted);
  pointer-events: none;
}

/* Category Filter Bar */
.books-cat-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.books-cat-nav-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  background: var(--qm-book-surface);
  border: 1px solid var(--qm-book-card-border);
  color: var(--qm-book-ink);
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s ease;
}

.books-cat-nav-item span {
  font-size: 0.75rem;
  opacity: 0.7;
  padding: 0.1rem 0.4rem;
  background: rgba(139, 38, 38, 0.1);
  border-radius: 999px;
}

.books-cat-nav-item:hover {
  border-color: var(--qm-book-accent);
  color: var(--qm-book-accent);
  transform: translateY(-1px);
}

/* Section Header */
.books-cat-section {
  margin-bottom: 3.5rem;
}

.books-cat-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  border-bottom: 2px solid var(--qm-book-card-border);
  padding-bottom: 0.5rem;
}

.books-cat-title::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 1.25rem;
  background: var(--qm-book-accent);
  border-radius: 3px;
}

/* Books Grid */
.books-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.books-list-item {
  display: flex;
}

/* 3D Book Cover Card Enhancement */
.home-book-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  text-decoration: none;
  color: inherit;
  background: var(--qm-book-surface);
  border: 1px solid var(--qm-book-card-border);
  border-radius: 1rem;
  padding: 1.25rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
  overflow: hidden;
}

.home-book-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(139, 38, 38, 0.08);
  border-color: var(--qm-book-accent);
}

.home-book-volume {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.home-book-cover {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.home-book-han {
  font-family: "LXGW WenKai", "Kaiti SC", "STKaiti", serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--qm-book-gold);
  margin-bottom: 0.35rem;
  letter-spacing: 0.05em;
}

.home-book-title {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 0.4rem;
  color: var(--qm-book-ink);
}

.home-book-author {
  font-size: 0.875rem;
  color: var(--qm-book-muted);
  margin-bottom: 0.85rem;
}

.home-book-rule {
  height: 1px;
  background: var(--qm-book-card-border);
  margin-top: auto;
  margin-bottom: 0.75rem;
}

.home-book-meta {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--qm-book-muted);
}

.home-book-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.5rem;
  padding: 0.45rem;
  background: rgba(139, 38, 38, 0.08);
  color: var(--qm-book-accent);
  border-radius: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  transition: background 0.2s ease, color 0.2s ease;
}

.home-book-card:hover .home-book-cta {
  background: var(--qm-book-accent);
  color: #fff;
}

/* Footer */
.books-footer {
  flex-shrink: 0;
  border-top: 1px solid var(--qm-book-card-border);
  padding: 2.5rem 1rem;
  background: var(--qm-book-surface);
  text-align: center;
  font-size: 0.875rem;
  color: var(--qm-book-muted);
}

.books-footer a {
  color: var(--qm-book-accent);
  text-decoration: none;
  font-weight: 600;
}

.books-footer a:hover {
  text-decoration: underline;
}

.books-footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}