/* =============================================================
   Components: header, nav, footer, cards, search, badges
   ============================================================= */

/* ---------------- Header / Navigation ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 0 rgba(22,33,62,0.03);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  height: 76px;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}
.brand-mark {
  width: 40px; height: 40px;
  color: var(--color-navy);
  flex-shrink: 0;
}
.brand-text {
  font-family: var(--font-display);
  line-height: 1.1;
  font-size: 1.05rem;
  color: var(--color-navy-deep);
}
.brand-text strong { display: block; font-weight: 600; }
.brand-text span { font-size: 0.75rem; color: var(--color-ink-soft); font-family: var(--font-body); letter-spacing: 0.04em; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: var(--sp-1); }
.main-nav ul { display: flex; gap: var(--sp-1); }
.main-nav a {
  display: block;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-navy);
  position: relative;
}
.main-nav a:hover { background: var(--color-cream-deep); }
.main-nav a[aria-current="page"] { color: var(--color-terracotta); }
.main-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0.9rem; right: 0.9rem; bottom: 0.15rem;
  height: 2px;
  background: var(--color-terracotta);
  border-radius: 2px;
}

.header-actions { display: flex; align-items: center; gap: var(--sp-2); flex-shrink: 0; }
.header-actions .btn { padding: 0.55rem 1.05rem; }

/* ---- Language switcher ---- */
.lang-switch {
  display: flex;
  align-items: center;
  background: var(--color-cream-deep);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
  flex-shrink: 0;
}
.lang-switch .lang-btn {
  border: none;
  background: none;
  border-radius: 999px;
  padding: 0.4rem 0.7rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-xs);
  color: var(--color-ink-soft);
  line-height: 1;
}
.lang-switch .lang-btn:hover { color: var(--color-navy); }
.lang-switch .lang-btn.is-active {
  background: var(--color-navy-deep);
  color: #fff;
}
.mobile-nav-lang { padding: 0 var(--sp-4) var(--sp-3); }
.mobile-nav-lang .lang-switch { width: max-content; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  color: var(--color-navy);
}

.mobile-nav {
  display: none;
  border-top: 1px solid var(--color-border);
  background: var(--color-paper);
}
.mobile-nav.is-open { display: block; }
.mobile-nav ul { display: flex; flex-direction: column; padding: var(--sp-2) var(--sp-4) var(--sp-4); }
.mobile-nav a { display: block; padding: var(--sp-2) 0; font-weight: 600; border-bottom: 1px solid var(--color-border); }
.mobile-nav a[aria-current="page"] { color: var(--color-terracotta); }

/* ---------------- Hero (home) ---------------- */
.hero {
  position: relative;
  color: #fff;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(15,23,48,0.55) 0%, rgba(15,23,48,0.88) 75%, var(--color-cream) 100%),
    url("../assets/images/library-building.jpg") center 60% / cover no-repeat;
}
.hero::before {
  /* faint shelf-line texture, evokes rows of book spines */
  content: "";
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(255,255,255,0.04) 0 3px, transparent 3px 26px);
  opacity: 0.4;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  padding-block: var(--sp-7) var(--sp-5);
  text-align: center;
}
.hero .eyebrow { color: var(--color-gold-light); display: block; margin-bottom: var(--sp-2); }

/* Greeting: short words, shown inline on one line rather than
   stacked, since "Ayubowan · Welcome · Vanakkam" are single words,
   not sentences. */
.greeting {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 0.5em;
  color: #fff;
  font-size: var(--fs-3xl);
  margin: 0 0 var(--sp-3);
}
.greeting .dot { color: var(--color-gold-light); font-size: 0.6em; }
.greeting .en { font-family: var(--font-body); font-weight: 600; font-size: 0.62em; color: #f2efe4; }
.greeting .ta { font-size: 0.85em; }

/* Subtle variant: used on the home hero where the greeting is the only
   headline text. Each language is set in a matching serif display
   face — Fraunces for English, Noto Serif Sinhala/Tamil for the
   others — all at the same size and baseline so the three sit evenly
   together instead of one looking like an afterthought. */
.greeting-subtle {
  font-size: var(--fs-2xl);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: #f6f1e4;
  opacity: 0.97;
}
.greeting-subtle .dot { font-size: 0.55em; opacity: 0.7; }
.greeting-subtle .en {
  font-family: var(--font-display);
  font-weight: 500;
  color: #f6f1e4;
}
.greeting-subtle [lang="si"] {
  font-family: var(--font-display-si) !important;
  font-weight: 500;
}
.greeting-subtle [lang="ta"] {
  font-family: var(--font-display-ta) !important;
  font-weight: 500;
}

.hero p.lede { color: #d9d5c6; max-width: 56ch; margin-inline: auto; font-size: var(--fs-md); }

.search-panel {
  max-width: 680px;
  margin: var(--sp-5) auto 0;
  background: var(--color-paper);
  border-radius: var(--radius-md);
  padding: var(--sp-2);
  box-shadow: var(--shadow-lift);
}
.search-form { display: flex; gap: var(--sp-2); }
.search-form input {
  flex: 1;
  border: none;
  padding: 0.85rem 1rem;
  font-size: var(--fs-md);
  color: var(--color-ink);
  background: transparent;
}
.search-form input:focus { outline: none; }
.search-form input:focus-visible { outline: 3px solid var(--color-gold); border-radius: var(--radius-sm); }
.search-form button {
  background: var(--color-navy);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0 1.4rem;
  font-weight: 600;
  display: flex; align-items: center; gap: 0.4rem;
}
.search-form button:hover { background: var(--color-navy-soft); }
.search-suggest {
  display: flex; flex-wrap: wrap; gap: var(--sp-1);
  justify-content: center;
  margin-top: var(--sp-3);
}
.search-suggest a {
  font-size: var(--fs-xs);
  color: #d9d5c6;
  border: 1px solid rgba(255,255,255,0.25);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
}
.search-suggest a:hover { background: rgba(255,255,255,0.12); }

/* ---------------- New Arrivals ticker (in the welcome/hero area) ----------------
   A horizontally auto-scrolling strip of recent titles, staff-updated
   via the catalogue/service layer. Pauses on hover/focus and honours
   reduced-motion preference. */
.arrivals-band {
  background: var(--color-navy-deep);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-block: var(--sp-4);
  overflow: hidden;
  position: relative;
}
.arrivals-band-head {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
  color: #fff;
}
.arrivals-band-head .i18n-inline { font-size: var(--fs-sm); }
.arrivals-band-head .i18n-inline [lang] { font-weight: 700; color: var(--color-gold-light); }
.arrivals-track-viewport {
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}
.arrivals-track {
  display: flex;
  gap: var(--sp-3);
  width: max-content;
  animation: arrivals-scroll 32s linear infinite;
}
.arrivals-track:hover, .arrivals-track:focus-within { animation-play-state: paused; }
@keyframes arrivals-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .arrivals-track { animation: none; }
}
.arrival-chip {
  flex: 0 0 auto;
  width: 220px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: var(--sp-2) var(--sp-3);
  display: flex;
  gap: var(--sp-2);
  align-items: flex-start;
}
.arrival-chip .spine-dot { width: 6px; align-self: stretch; border-radius: 3px; flex-shrink: 0; }
.arrival-chip .chip-title { font-family: var(--font-display); font-size: 0.95rem; color: #fff; margin: 0 0 0.15rem; line-height: 1.25; }
.arrival-chip .chip-sub { font-size: 0.75rem; color: #b6b2a2; }

/* ---------------- Services page: audience groups ---------------- */
.service-group { margin-bottom: var(--sp-6); }
.service-group-head {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
}
.audience-badge {
  width: 40px; height: 40px;
  border-radius: 50%;
  color: #fff;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.grid {
  display: grid;
  gap: var(--sp-4);
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.split-2 { grid-template-columns: 2fr 1fr; align-items: start; }

/* ---------------- Spine card (signature element) ----------------
   Every content card (book / event / post) carries a colored
   "spine" on its leading edge — a nod to books shelved side by side.
------------------------------------------------------------------- */
.spine-card {
  display: flex;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  height: 100%;
}
.spine-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); }
.spine-card .spine {
  width: 8px;
  flex-shrink: 0;
  background: var(--color-gold);
}
.spine-card[data-category="event"] .spine { background: var(--color-terracotta); }
.spine-card[data-category="news"] .spine { background: var(--color-teal); }
.spine-card[data-category="book"] .spine { background: var(--color-gold); }

.card-body {
  padding: var(--sp-3) var(--sp-3) var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  flex: 1;
}
.card-thumb {
  aspect-ratio: 16/10;
  width: 100%;
  background: var(--color-cream-deep);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-ink-soft);
}
.card-thumb.is-book { aspect-ratio: 3/4; }
.card-meta {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.card-title { font-family: var(--font-display); font-size: var(--fs-md); margin: 0; color: var(--color-navy-deep); }
.card-desc { font-size: var(--fs-sm); color: var(--color-ink-soft); flex: 1; }
.card-foot { display: flex; align-items: center; justify-content: space-between; margin-top: auto; gap: var(--sp-2); }

/* Book-specific */
.book-card .card-thumb { background: linear-gradient(160deg, var(--color-navy-soft), var(--color-navy-deep)); }
.book-author { font-size: var(--fs-sm); color: var(--color-ink-soft); }
.book-author.i18n-inline { display: block; }

/* ---------------- Badges / status ---------------- */
.badge {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-size: var(--fs-xs); font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  text-transform: uppercase; letter-spacing: 0.03em;
}
.badge-available { background: #e4f3ea; color: #1f7a4d; }
.badge-checked-out { background: #fbeee9; color: var(--color-terracotta); }
.badge-hold { background: #f4e6c4; color: #8a6206; }
.badge-published { background: #e4f3ea; color: #1f7a4d; }
.badge-draft { background: #ececec; color: #5b5646; }

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--color-navy-deep);
  color: #d7d3c4;
  margin-top: var(--sp-6);
}
.footer-inner {
  padding-block: var(--sp-6) var(--sp-4);
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--sp-5);
}
.site-footer .brand-text, .site-footer .brand-text strong { color: #fff; }
.site-footer .brand-mark { color: var(--color-gold-light); }
.footer-col h4 {
  color: #fff; font-family: var(--font-body); font-size: var(--fs-sm);
  text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--sp-2);
}
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col a:hover { color: var(--color-gold-light); text-decoration: underline; }
.footer-col p { color: #b6b2a2; font-size: var(--fs-sm); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-block: var(--sp-3);
  font-size: var(--fs-xs); color: #9b97897;
  color: #9b9587;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--sp-2);
}

/* ---------------- Pagination ---------------- */
.pagination {
  display: flex; align-items: center; justify-content: center; gap: var(--sp-1);
  margin-top: var(--sp-5);
}
.pagination button {
  min-width: 40px; height: 40px;
  border: 1px solid var(--color-border);
  background: var(--color-paper);
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--color-navy);
}
.pagination button[aria-current="true"] { background: var(--color-navy); color: #fff; border-color: var(--color-navy); }
.pagination button:hover:not(:disabled) { background: var(--color-cream-deep); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------------- Filters bar (catalogue search) ---------------- */
.filters-bar {
  display: flex; flex-wrap: wrap; gap: var(--sp-2);
  align-items: center;
  padding: var(--sp-3);
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--sp-4);
}
.filters-bar .field { margin-bottom: 0; min-width: 180px; flex: 1; }
.results-count { font-size: var(--fs-sm); color: var(--color-ink-soft); margin-bottom: var(--sp-3); }

/* ---------------- Detail page layout ---------------- */
.detail-layout { display: grid; grid-template-columns: 320px 1fr; gap: var(--sp-6); padding-block: var(--sp-6); }
.detail-cover {
  aspect-ratio: 3/4;
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, var(--color-navy-soft), var(--color-navy-deep));
  box-shadow: var(--shadow-card);
}
.detail-facts { list-style: none; margin: var(--sp-3) 0; padding: 0; }
.detail-facts li {
  display: flex; justify-content: space-between; gap: var(--sp-2);
  padding: 0.55rem 0; border-bottom: 1px solid var(--color-border);
  font-size: var(--fs-sm);
}
.detail-facts li span:first-child { color: var(--color-ink-soft); }
.detail-facts li span:last-child { font-weight: 600; text-align: right; }

/* ---------------- Admin shell ---------------- */
.admin-shell { display: grid; grid-template-columns: 250px 1fr; min-height: 100vh; }
.admin-sidebar {
  background: var(--color-navy-deep);
  color: #d7d3c4;
  padding: var(--sp-4) var(--sp-3);
}
.admin-sidebar .brand-text, .admin-sidebar .brand-text strong { color: #fff; }
.admin-sidebar .brand-mark { color: var(--color-gold-light); }
.admin-sidebar nav { margin-top: var(--sp-5); }
.admin-sidebar a {
  display: flex; align-items: center; gap: var(--sp-2);
  padding: 0.7rem 0.8rem; border-radius: var(--radius-sm);
  font-weight: 600; font-size: var(--fs-sm); margin-bottom: 0.2rem;
  color: #cfcabb;
}
.admin-sidebar a:hover { background: rgba(255,255,255,0.06); }
.admin-sidebar a[aria-current="page"] { background: var(--color-teal); color: #fff; }
.admin-main { background: var(--color-cream); padding: var(--sp-5) var(--sp-6); }
.admin-topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sp-5); }
.admin-stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-3); margin-bottom: var(--sp-5); }
.admin-stat {
  background: var(--color-paper); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--sp-4);
}
.admin-stat .label { font-family: var(--font-mono); font-size: var(--fs-xs); text-transform: uppercase; color: var(--color-ink-soft); letter-spacing: 0.05em; }
.admin-stat .value { font-family: var(--font-display); font-size: var(--fs-2xl); color: var(--color-navy-deep); margin-top: 0.2rem; }
.admin-panel {
  background: var(--color-paper); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--sp-4);
}
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td {
  text-align: left; padding: 0.75rem 0.6rem; border-bottom: 1px solid var(--color-border);
  font-size: var(--fs-sm);
}
.admin-table th { font-family: var(--font-mono); text-transform: uppercase; font-size: var(--fs-xs); color: var(--color-ink-soft); letter-spacing: 0.04em; }
.admin-table tr:last-child td { border-bottom: none; }
.admin-row-actions { display: flex; gap: var(--sp-1); }
.admin-row-actions button { background: none; border: none; color: var(--color-navy); font-size: var(--fs-xs); font-weight: 700; text-decoration: underline; padding: 0.2rem; }
.admin-row-actions .danger { color: var(--color-terracotta); }

.dev-banner {
  background: var(--color-gold-pale);
  color: #6b4c05;
  text-align: center;
  font-size: var(--fs-xs);
  font-weight: 600;
  padding: 0.45rem;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

.auth-shell {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-navy-deep);
  padding: var(--sp-4);
}
.auth-card {
  width: 100%; max-width: 420px;
  background: var(--color-paper);
  border-radius: var(--radius-md);
  padding: var(--sp-5);
  box-shadow: var(--shadow-lift);
}
.auth-card .brand { justify-content: center; margin-bottom: var(--sp-4); }
.auth-card h1 { font-size: var(--fs-xl); text-align: center; }
.auth-card .sub { text-align: center; color: var(--color-ink-soft); font-size: var(--fs-sm); margin-bottom: var(--sp-4); }