@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@500;600;700&family=Fraunces:opsz,wght@9..144,500;9..144,650&family=Libre+Baskerville:wght@400;700&display=swap");

:root {
  --bg: #f8f8f8;
  --ink: #101114;
  --line: #d9dde5;
  --panel: #ffffff;
  --muted: #6b7280;
  --ring: 0 0 0 3px rgba(48, 67, 106, 0.35);
  --maple-light-1: #f2e2c5;
  --maple-light-2: #ead6b2;
  --maple-light-3: #dfc59a;
  --section-header-font: "Cormorant Garamond", Georgia, "Times New Roman", serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  background: #fff;
  color: #000;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--line);
  z-index: 1000;
}

.skip-link:focus {
  top: 0.75rem;
}

.site-header {
  padding: 2rem 0 0.6rem;
}

.hero-simple h1 {
  margin: 0;
  text-align: center;
  font-family: var(--section-header-font);
  font-size: clamp(2rem, 4vw, 2.7rem);
  font-weight: 600;
}

.section-head h2,
.placeholder-section h2 {
  margin: 0;
  text-align: center;
  font-family: var(--section-header-font);
  font-size: clamp(1.45rem, 2.5vw, 1.9rem);
  font-weight: 600;
}

/* Header font options: literary | classic | modern */
body[data-header-font="literary"] {
  --section-header-font: "Cormorant Garamond", Georgia, "Times New Roman", serif;
}

body[data-header-font="classic"] {
  --section-header-font: "Libre Baskerville", Georgia, "Times New Roman", serif;
}

body[data-header-font="modern"] {
  --section-header-font: "Fraunces", Georgia, "Times New Roman", serif;
}

.books-section {
  padding: 0.8rem 0 0.2rem;
}

.timeline-section {
  padding: 2rem 0 1.15rem;
}

.timeline-title {
  margin: 0 0 0.7rem;
  text-align: center;
  font-family: var(--section-header-font);
  font-size: clamp(1.45rem, 2.5vw, 1.9rem);
  font-weight: 600;
}

.timeline-filters {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 0.4rem;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}

.timeline-filter {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 0.82rem;
  cursor: pointer;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  transition: all 0.2s ease;
  font-family: inherit;
}

.timeline-filter:hover,
.timeline-filter:focus-visible {
  color: var(--ink);
  background: rgba(0, 0, 0, 0.04);
}

.timeline-filter.is-active {
  color: var(--ink);
  background: rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.1);
}

.timeline-shell {
  width: 100vw;
  margin-left: calc(50% - 50vw);
}

.timeline-viewport {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0 0 0.2rem;
  scroll-behavior: smooth;
}

.timeline-viewport:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.timeline-track {
  position: relative;
  min-width: 100%;
  isolation: isolate;
  transition: height 0.3s ease-out;
}

.timeline-axis {
  position: absolute;
  left: 0;
  right: 0;
  bottom: var(--timeline-bottom, 2rem);
  height: 2px;
  background: rgba(16, 17, 20, 0.85);
  z-index: 0;
  transition: bottom 0.3s ease-out;
}

.timeline-event {
  position: absolute;
  bottom: var(--timeline-bottom, 2rem);
  transition: bottom 0.3s ease-out;
}

.timeline-tick {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 2px;
  height: var(--timeline-tick-height, 30px);
  transform: translateX(-50%);
  background: rgba(16, 17, 20, 0.85);
  z-index: 0;
}

.timeline-event-link {
  position: absolute;
  left: 0;
  bottom: var(--timeline-label-bottom, 40px);
  transform: translateX(-50%);
  display: block;
  width: max-content;
  max-width: 12rem;
  padding: 0.16rem 0.52rem 0.22rem;
  color: #111827;
  text-align: center;
  text-decoration: none;
  text-wrap: balance;
  line-height: 1.15;
  font-family: var(--section-header-font);
  font-size: 1.05rem;
  font-weight: 600;
  z-index: 2;
}

.timeline-event-link::before {
  content: "";
  position: absolute;
  inset: -0.45rem -0.75rem -0.35rem;
  background: radial-gradient(
    ellipse at center,
    rgba(248, 248, 248, 0.98) 0%,
    rgba(248, 248, 248, 0.94) 50%,
    rgba(248, 248, 248, 0.45) 74%,
    rgba(248, 248, 248, 0) 100%
  );
  z-index: -1;
  pointer-events: none;
}

.timeline-event-link:hover,
.timeline-event-link:focus-visible {
  color: #1f3e73;
}

.timeline-date-label {
  position: absolute;
  left: 0;
  top: var(--timeline-date-top, 12px);
  transform: translateX(-50%);
  display: block;
  width: max-content;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.1;
  white-space: nowrap;
  padding: 0.08rem 0.36rem;
  z-index: 2;
}

.timeline-date-label::before {
  content: "";
  position: absolute;
  inset: -0.3rem -0.55rem;
  background: radial-gradient(
    ellipse at center,
    rgba(248, 248, 248, 0.96) 0%,
    rgba(248, 248, 248, 0.9) 54%,
    rgba(248, 248, 248, 0.32) 76%,
    rgba(248, 248, 248, 0) 100%
  );
  z-index: -1;
  pointer-events: none;
}


.bookshelf-shell {
  width: 100vw;
  margin-left: calc(50% - 50vw);
}

.bookshelf-viewport {
  position: relative;
  overflow-x: auto;
  overflow-y: hidden;
  border: 0;
  border-radius: 0;
  background: transparent;
  padding: 0;
  scroll-behavior: smooth;
}

.bookshelf-viewport:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.bookshelf-backdrop,
.bookshelf-plane,
.bookshelf-lip {
  display: none;
  pointer-events: none;
}

.bookshelf-backdrop {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0));
}

.bookshelf-plane {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.65rem;
  height: 0.58rem;
  background: linear-gradient(180deg, rgba(150, 115, 72, 0.28), rgba(128, 96, 58, 0.34));
}

.bookshelf-lip {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.3rem;
  height: 0.34rem;
  background: linear-gradient(180deg, rgba(124, 90, 51, 0.42), rgba(106, 76, 41, 0.55));
}

.shelf-track {
  position: relative;
  z-index: 1;
  min-width: max-content;
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
  gap: 0.95rem;
  padding: 1.5rem 1.5rem 2rem;
  border-radius: 0;
  background-color: #d4b895;
  background-image: url('images/maple-wood-even.png');
  background-size: 400px;
  background-repeat: repeat;
  box-shadow: inset 0 0 40px rgba(0,0,0,0.5);
}

.shelf-track.is-centered {
  justify-content: center;
}


.book-group {
  min-width: max-content;
  width: max-content;
  padding: 0.2rem 0.4rem;
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto auto;
}

.book-group-gap {
  width: 2rem;
  min-width: 2rem;
  flex: 0 0 2rem;
}

.book-group.is-current {
  margin-left: 0;
  margin-right: 0;
}

.group-label {
  display: block;
  width: max-content;
  margin: 0 0 0.45rem;
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(250, 245, 234, 0.88);
  border: 1px solid rgba(90, 66, 37, 0.26);
  position: sticky;
  top: 0.28rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.group-label-wrap {
  position: relative;
  width: 100%;
  min-height: 1.75rem;
  z-index: 6;
  pointer-events: none;
}


.shelf-lanes {
  display: grid;
  grid-template-rows: auto auto;
  gap: 1.5rem;
  transform: perspective(1100px) rotateX(7deg);
  transform-origin: center top;
}

.shelf-row {
  position: relative;
  min-height: 188px;
  display: flex;
  gap: 1.5rem;
  align-items: flex-end;
  margin-bottom: 1.5rem;
}

.book-link {
  width: 120px;
  display: block;
  text-decoration: none;
  position: relative;
  z-index: 1;
}

.shelf-row::before {
  content: "";
  position: absolute;
  bottom: -4px;
  left: -1.4rem;
  right: -1.4rem;
  height: 28px;
  background: #3e2723;
  background-image: linear-gradient(to bottom, #4e342e, #3e2723);
  transform: perspective(300px) rotateX(50deg);
  transform-origin: bottom;
  z-index: 0;
  box-shadow: inset 0 1px 1px rgba(255,255,255,0.1);
}

.shelf-row::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: -1.4rem;
  right: -1.4rem;
  height: 6px;
  background: #261712;
  z-index: 0;
  box-shadow: 0 8px 12px rgba(0,0,0,0.6);
}

.book {
  position: relative;
  z-index: 1;
  width: 120px;
  height: 180px;
  overflow: hidden;
  border-radius: 0;
  border: 1px solid rgba(22, 30, 46, 0.18);
  box-shadow: 0 8px 16px rgba(9, 16, 27, 0.2), 0 2px 4px rgba(0,0,0,0.3);
  background: linear-gradient(145deg, #dbe0e8, #bcc4d1);
  transform: perspective(900px) rotateY(var(--edge-lean, 0deg)) translateY(0);
  transition: transform 130ms ease, box-shadow 130ms ease;
}

.book-link:hover .book,
.book-link:focus-visible .book {
  transform: perspective(900px) rotateY(var(--edge-lean, 0deg)) translateY(-4px);
  box-shadow: 0 12px 20px rgba(9, 16, 27, 0.3), 0 4px 8px rgba(0,0,0,0.2);
}

.book-link:focus-visible .book {
  box-shadow: var(--ring), 0 12px 20px rgba(9, 16, 27, 0.3), 0 4px 8px rgba(0,0,0,0.2);
}

.book-cover,
.book-fallback {
  width: 120px;
  height: 180px;
}

.book-tag {
  position: absolute;
  top: 0.35rem;
  left: 0.4rem;
  z-index: 3;
  padding: 0.12rem 0.28rem;
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #0f172a;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(30, 41, 59, 0.3);
  transition: opacity 130ms ease;
}

.book-tag.is-next {
  top: 1.15rem;
  background: rgba(255, 238, 191, 0.92);
}

.book-cover {
  object-fit: cover;
  transition: filter 180ms ease, transform 180ms ease;
}

.book.no-cover .book-cover {
  display: none;
}

.book-fallback {
  display: none;
  padding: 0.7rem;
  align-items: flex-end;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.9rem;
  color: #111827;
}

.book.no-cover .book-fallback {
  display: flex;
}

.book-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 0.24rem;
  padding: 0.55rem;
  opacity: 0;
  color: #ffffff;
  background: rgba(10, 15, 24, 0.48);
  transition: opacity 160ms ease;
  pointer-events: none;
}

.book-overlay-title,
.book-overlay-author,
.book-overlay-term {
  margin: 0;
  line-height: 1.2;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
}

.book-overlay-title {
  font-size: 0.72rem;
  font-weight: 700;
}

.book-overlay-author {
  font-size: 0.62rem;
  opacity: 0.97;
}

.book-overlay-term {
  margin-top: 0.18rem;
  font-size: 0.58rem;
  letter-spacing: 0.02em;
  text-transform: none;
  opacity: 0.98;
  padding: 0.14rem 0.32rem;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.14);
  color: inherit;
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.book-link:hover .book-cover,
.book-link:focus-visible .book-cover {
  filter: blur(1.8px) brightness(0.72);
  transform: scale(1.03);
}

.book-link:hover .book-overlay,
.book-link:focus-visible .book-overlay {
  opacity: 1;
}

.book-link:hover .book-tag,
.book-link:focus-visible .book-tag {
  opacity: 0;
}

.placeholder-section {
  padding: 0.9rem 0;
}

.info-grid {
  margin-top: 0.85rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem;
}

.info-intro {
  margin: 0.6rem auto 0;
  max-width: 64ch;
  text-align: center;
  color: #374151;
}

.info-card {
  background: linear-gradient(180deg, #ffffff, #fbfdff);
  border: 1px solid #dce2ea;
  border-radius: 12px;
  padding: 0.82rem 0.95rem;
  box-shadow: 0 2px 9px rgba(16, 24, 40, 0.06);
  transition: transform 120ms ease, box-shadow 120ms ease;
}

.info-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 7px 16px rgba(16, 24, 40, 0.1);
}

.info-card h3 {
  margin: 0 0 0.45rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.06rem;
}

.info-card strong {
  font-weight: 600;
}

.info-card p {
  margin: 0;
  color: #1f2937;
  line-height: 1.4;
}

.info-list {
  margin: 0;
  padding-left: 1.05rem;
  display: grid;
  gap: 0.24rem;
  color: #1f2937;
}

.info-list li {
  line-height: 1.34;
}

.info-card a {
  color: #1f3e73;
  text-underline-offset: 0.12em;
}

.info-card a:hover,
.info-card a:focus-visible {
  color: #0f2b58;
}

.announcements-list {
  display: grid;
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.announcement-card {
  padding: 1.5rem;
}

.announcement-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.2rem;
}

.announcement-date {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.announcement-content p {
  margin-bottom: 0.8rem;
}

.announcement-content .info-list {
  margin-top: 0.5rem;
}

.site-header-compact {
  padding: 1rem 0 0.7rem;
}

.compact-header-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.65rem;
}

.site-home-link {
  text-decoration: none;
  font-family: var(--section-header-font);
  font-size: 1.2rem;
  font-weight: 600;
}

.compact-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.book-main {
  padding: 1rem 0;
}

.book-detail {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem;
}

.book-breadcrumb {
  display: inline-flex;
  margin-bottom: 1rem;
}

.book-detail-layout {
  display: grid;
  grid-template-columns: minmax(180px, 240px) 1fr;
  gap: 1rem 1.2rem;
}

.book-detail-cover {
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(22, 30, 46, 0.2);
}

.book-detail-cover.no-cover img {
  display: none;
}

.book-detail-fallback {
  min-height: 300px;
  display: none;
  align-items: flex-end;
  padding: 0.8rem;
  background: #dbe0e8;
}

.book-detail-cover.no-cover .book-detail-fallback {
  display: flex;
}

.book-detail-meta h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
}

.book-detail-author {
  margin: 0.35rem 0 0.7rem;
  color: var(--muted);
}

.book-detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 0.8rem;
}

.book-detail-tag-chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid rgba(30, 41, 59, 0.24);
  background: rgba(246, 248, 252, 0.95);
  padding: 0.2rem 0.55rem;
  font-size: 0.75rem;
  line-height: 1;
  letter-spacing: 0.02em;
  color: #1f2937;
}

.book-detail-next {
  margin: 0 0 0.9rem;
  color: #1f2937;
}

.meeting-list {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.32rem;
}

.meeting-link {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.14em;
}

.meeting-link:hover,
.meeting-link:focus-visible {
  color: var(--accent);
}

.meeting-meta {
  margin-top: 0.1rem;
  color: var(--muted);
  font-size: 0.92em;
}

.meeting-chip {
  display: inline-flex;
  align-items: center;
  margin-left: 0.45rem;
  border-radius: 999px;
  padding: 0.06rem 0.4rem;
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.meeting-chip-upcoming {
  color: #264653;
  background: rgba(200, 242, 232, 0.8);
  border: 1px solid rgba(38, 70, 83, 0.22);
}

.meeting-note {
  color: var(--muted);
  font-size: 0.86em;
}

.book-detail-section h2 {
  margin: 0 0 0.35rem;
  font-family: Georgia, "Times New Roman", serif;
}

.book-detail-section p {
  margin: 0;
}

.event-meta-list {
  display: grid;
  gap: 0.4rem;
  margin: 0 0 1rem;
}

.event-meta-list p {
  margin: 0;
}

.not-found {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem;
}

@media (max-width: 860px) {
  .book-group {
    min-width: max-content;
  }

  .timeline-event-link {
    max-width: 10rem;
    font-size: 0.96rem;
  }

  .book-link,
  .book,
  .book-cover,
  .book-fallback {
    width: 100px;
  }

  .book,
  .book-cover,
  .book-fallback {
    height: 152px;
  }

  .shelf-row {
    min-height: 160px;
  }
}

@media (max-width: 700px) {
  .book-group {
    min-width: max-content;
  }

  .book-detail-layout {
    grid-template-columns: 1fr;
  }

  .info-grid {
    grid-template-columns: 1fr;
    gap: 0.72rem;
  }

  .info-intro {
    text-align: left;
  }
}