:root {
  --page-bg: #08111e;
  --sidebar-bg: linear-gradient(180deg, #0a1625 0%, #111f33 100%);
  --panel-bg: #682e35;
  --text-main: #e9e4d8;
  --text-muted: #94a0b4;
  --cream: #f4efdf;
  --white: #ffffff;
  --gold: #c59a46;
  --gold-soft: #e2c47d;
  --oxblood: #8a2732;
  --oxblood-deep: #5a242b;
  --navy-edge: #1c2a3d;
  --line: rgba(197, 154, 70, 0.24);
  --shadow-soft: 0 28px 50px rgba(0, 0, 0, 0.28);
  --shadow-pill: 0 8px 20px rgba(0, 0, 0, 0.22);
  --sidebar-width: min(41.666%, 480px);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow: hidden;
  background: var(--page-bg);
  color: var(--text-main);
  font-family: "IBM Plex Sans Condensed", sans-serif;
}

a {
  color: inherit;
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  min-width: 320px;
  background: var(--sidebar-bg);
  border-right: 1px solid rgba(197, 154, 70, 0.12);
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 44px;
}

.sidebar-panel {
  display: none;
}

.sidebar-panel.is-active {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
}

.identity h1 {
  margin: 0;
  color: var(--cream);
  font-family: Bitter, serif;
  font-size: 40px;
  line-height: 0.96;
  letter-spacing: 0;
}

.identity h1 a {
  text-decoration: none;
}

.identity-subtitle {
  margin: 6px 0 16px;
  color: var(--gold-soft);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-transform: uppercase;
}

.identity-note {
  max-width: 30rem;
  margin: 0 0 20px;
  color: rgba(233, 228, 216, 0.82);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.55;
}

.identity-note a {
  color: var(--cream);
  text-decoration: none;
  border-bottom: 1px solid rgba(226, 196, 125, 0.35);
  transition: color 160ms ease, border-color 160ms ease;
}

.identity-note a:hover,
.identity-note a:focus-visible {
  color: var(--gold-soft);
  border-color: rgba(226, 196, 125, 0.7);
}

.socials {
  display: flex;
  gap: 12px;
  margin-top: 0;
  margin-bottom: 26px;
}

.socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: #d8deea;
  text-decoration: none;
  border: 1px solid rgba(197, 154, 70, 0.28);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  transition: color 180ms ease, transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.socials a:hover,
.socials a:focus-visible {
  color: var(--cream);
  border-color: var(--gold-soft);
  background: rgba(197, 154, 70, 0.09);
  transform: translateY(-1px);
}

.socials i {
  font-size: 15px;
}

.content-shell {
  flex: 1;
  background: var(--oxblood-deep);
  min-height: 100vh;
}

.content-inner {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 28px 36px 30px;
}

.tab-rail {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: inline-grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 2px;
  align-items: center;
  min-width: min(100%, 310px);
  margin: 0 auto 24px;
  padding: 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(197, 154, 70, 0.18);
  border-radius: 999px;
  box-shadow: var(--shadow-pill);
  isolation: isolate;
  backdrop-filter: blur(10px);
}

.tab-indicator {
  position: absolute;
  z-index: -1;
  top: 4px;
  left: var(--indicator-x, 4px);
  width: var(--indicator-width, 90px);
  height: calc(100% - 8px);
  background: rgba(197, 154, 70, 0.14);
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px rgba(226, 196, 125, 0.16);
  transition: left 240ms ease, width 240ms ease;
}

.tab-button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 24px;
  padding: 2px 8px;
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 180ms ease, transform 150ms ease;
}

.tab-button:not(.is-active):not(.is-locked):hover {
  color: rgba(233, 228, 216, 0.7);
  transform: scale(1.08);
}

.tab-button.is-active {
  color: var(--cream);
}

.tab-button.is-locked {
  color: #71809a;
  cursor: not-allowed;
}

.tab-button--stacked-only,
.tab-panel--stacked-only {
  display: none;
}

.tab-lock {
  display: inline-flex;
  width: 15px;
  height: 15px;
  opacity: 0.75;
}

.tab-lock svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
  flex: 1;
  min-height: 0;
}

.sidebar-divider {
  height: 1px;
  margin-bottom: 22px;
  background: rgba(197, 154, 70, 0.18);
}

.timeline-scroll {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding-right: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.bookshelf-scroll {
  height: 100%;
  min-height: 0;
  overflow: auto;
  padding-right: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.bookshelf-scroll-content {
  min-height: 100%;
}

.timeline-scroll::-webkit-scrollbar,
.bookshelf-scroll::-webkit-scrollbar {
  display: none;
}

.bookshelf-status {
  margin: 0 auto 18px;
  width: min(100%, 1100px);
  color: rgba(233, 228, 216, 0.72);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.bookshelf-years {
  display: grid;
  gap: 22px;
}

.year-section {
  width: min(100%, 1100px);
  margin: 0 auto;
}

.year-divider {
  position: sticky;
  top: 0;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  margin-bottom: 10px;
  background: transparent;
  isolation: isolate;
}

.year-divider::before {
  content: "";
  width: min(100%, 320px);
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, rgba(197, 154, 70, 0.68) 40%, transparent 100%);
}

.year-divider::after {
  content: "";
  position: absolute;
  inset: 0 0 -22px 0;
  z-index: -1;
  background: linear-gradient(
    180deg,
    var(--oxblood-deep) 0%,
    var(--oxblood-deep) 56%,
    rgba(90, 36, 43, 0.88) 72%,
    rgba(90, 36, 43, 0) 100%
  );
  pointer-events: none;
}

.year-pill {
  position: absolute;
  padding: 3px 16px;
  background: var(--oxblood-deep);
  color: var(--gold-soft);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.16em;
  box-shadow: 0 0 0 10px var(--oxblood-deep);
}

.books-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px 12px;
}

.book-card {
  position: relative;
  width: 170px;
  height: 260px;
  outline: none;
}

.book-face,
.book-review {
  position: absolute;
  inset: 0;
  margin: 10px;
  border: 1px solid rgba(197, 154, 70, 0.38);
  transition: opacity 180ms ease, transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.book-face {
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 248, 240, 0.08), rgba(255, 248, 240, 0.02));
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.2);
}

.book-face img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.book-face--fallback {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 14px 12px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02)),
    linear-gradient(135deg, rgba(197, 154, 70, 0.16), rgba(138, 39, 50, 0.18));
  color: var(--cream);
}

.book-face--fallback strong {
  font-family: Bitter, serif;
  font-size: 22px;
  line-height: 1.05;
}

.book-face--fallback span {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.book-review {
  padding: 14px;
  background: rgba(244, 239, 223, 0.98);
  opacity: 0;
  transform: translateY(3px);
  overflow: hidden;
}

.book-card:hover .book-face,
.book-card:focus-visible .book-face {
  opacity: 0;
  transform: translateY(-3px);
}

.book-card:hover .book-review,
.book-card:focus-visible .book-review {
  opacity: 1;
  transform: translateY(0);
}

.book-card:hover .book-face,
.book-card:hover .book-review,
.book-card:focus-visible .book-face,
.book-card:focus-visible .book-review {
  border-color: var(--gold-soft);
  box-shadow: 0 18px 30px rgba(0, 0, 0, 0.28);
}

.review-title {
  margin-bottom: 2px;
  color: #162233;
  font-family: Bitter, serif;
  font-size: 12px;
  line-height: 1.15;
}

.review-author {
  margin-bottom: 6px;
  color: #4a607a;
  font-size: 10px;
  font-style: italic;
  line-height: 1.3;
  letter-spacing: 0.01em;
}

.review-summary {
  margin-bottom: 10px;
  color: #1e3048;
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.5;
}

.review-meta {
  width: 100%;
  border-collapse: collapse;
}

.review-meta-label {
  padding: 2px 8px 2px 0;
  color: #7a8fa6;
  font-size: 10px;
  font-style: italic;
  text-align: left;
  white-space: nowrap;
  vertical-align: middle;
}

.review-meta-value {
  padding: 2px 0;
  color: #162233;
  font-size: 11px;
  font-weight: 600;
  text-align: left;
  vertical-align: middle;
  letter-spacing: 0.01em;
}

.timeline {
  --timeline-padding: 40px;
  --timeline-axis-center: 12px;
  --timeline-line-width: 2px;
  --timeline-dot-size: 10px;
  position: relative;
  width: 100%;
  margin: 0;
  padding-left: var(--timeline-padding);
}

.timeline::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 calc(var(--timeline-axis-center) - (var(--timeline-line-width) / 2));
  width: var(--timeline-line-width);
  background: linear-gradient(180deg, var(--gold-soft) 0%, var(--oxblood) 100%);
}

.timeline::after {
  content: "";
  position: absolute;
  top: -7px;
  left: calc(var(--timeline-axis-center) - 5px);
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 7px solid var(--gold-soft);
}

.timeline-year {
  margin-bottom: 28px;
}

.timeline-list {
  display: grid;
  gap: 20px;
}

.timeline-item {
  --timeline-item-accent: rgba(233, 228, 216, 0.52);
  position: relative;
  padding-left: 0;
  color: rgba(233, 228, 216, 0.9);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: calc(var(--timeline-axis-center) - (var(--timeline-dot-size) / 2) - var(--timeline-padding));
  top: 0.82em;
  width: var(--timeline-dot-size);
  height: var(--timeline-dot-size);
  background: var(--timeline-item-accent);
  border-radius: 999px;
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--timeline-item-accent) 18%, transparent);
  transform: translateY(-50%);
}

.timeline-item--media {
  --timeline-item-accent: #89b0ff;
}

.timeline-item--lore {
  --timeline-item-accent: #e2c47d;
}

.timeline-item--present {
  --timeline-item-accent: rgba(233, 228, 216, 0.44);
}

.timeline-item__copy {
  color: rgba(233, 228, 216, 0.9);
  font-size: 15px;
  line-height: 1.65;
}

.timeline-item__year {
  margin-right: 10px;
  color: var(--timeline-item-accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.timeline-link {
  color: var(--cream);
  font: inherit;
  font-weight: 600;
  letter-spacing: 0;
  line-height: inherit;
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.14em;
  transition: color 160ms ease, text-decoration-color 160ms ease;
}

.timeline-link--media {
  color: #d9e6ff;
  text-decoration-color: rgba(137, 176, 255, 0.65);
}

.timeline-link--media:hover,
.timeline-link--media:focus-visible {
  color: #edf4ff;
  text-decoration-color: rgba(137, 176, 255, 0.92);
}

.timeline-link--lore {
  color: #f3e2b5;
  text-decoration-color: rgba(226, 196, 125, 0.62);
}

.timeline-link--lore:hover,
.timeline-link--lore:focus-visible {
  color: #fbefcf;
  text-decoration-color: rgba(226, 196, 125, 0.9);
}

.timeline-link--present {
  color: var(--cream);
  text-decoration-color: rgba(233, 228, 216, 0.5);
}

.empty-state {
  width: min(100%, 1100px);
  margin: 0 auto;
  padding: 24px;
  color: rgba(233, 228, 216, 0.8);
  border: 1px solid rgba(197, 154, 70, 0.18);
  border-radius: 18px;
  text-align: center;
  background: rgba(255, 255, 255, 0.03);
}

code {
  font-family: "SFMono-Regular", Menlo, Monaco, Consolas, monospace;
}

/* ── Mobile topbar ── */
.mobile-topbar {
  display: none;
}


@media (max-width: 1040px) {
  body {
    overflow: auto;
  }

  .layout {
    flex-direction: column;
  }

  .sidebar,
  .content-shell {
    width: 100%;
  }

  .sidebar-inner {
    display: block;
    height: auto;
    padding-bottom: 28px;
  }

  .content-inner {
    display: block;
    height: auto;
    padding-top: 20px;
  }

  .tab-button--stacked-only {
    display: inline-flex;
  }

  .sidebar-divider,
  .timeline-scroll {
    display: none;
  }

  .tab-panel--stacked-only.is-active {
    display: block;
  }

  .timeline-scroll--panel,
  .bookshelf-scroll {
    display: block;
    overflow: visible;
    height: auto;
    padding-right: 0;
  }

  /* Fixed compact topbar — fades in once full header scrolls away */
  .mobile-topbar {
    display: flex;
    align-items: center;
    gap: 10px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 48px;
    padding: 0 20px;
    background: linear-gradient(180deg, #0a1625 0%, #111f33 100%);
    border-bottom: 1px solid rgba(197, 154, 70, 0.15);
    opacity: 0;
    pointer-events: none;
    transition: opacity 220ms ease;
  }

  body.topbar-visible .mobile-topbar {
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-topbar-name {
    color: var(--cream);
    font-family: Bitter, serif;
    font-size: 20px;
    font-weight: 700;
    white-space: nowrap;
  }

  .mobile-topbar-sep {
    color: var(--gold-soft);
    opacity: 0.5;
    font-size: 14px;
  }

  .mobile-topbar-tagline {
    color: var(--gold-soft);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
  }

  /* Tab rail: normal flow at top of page, scrolls away */
  .tab-rail {
    position: relative;
    top: auto;
    z-index: auto;
  }

  /* Year bar: flush against fixed topbar when visible */
  .year-divider {
    top: 0;
  }

  body.topbar-visible .year-divider {
    top: 48px;
  }

  /* Remove gap before first year section */
  .bookshelf-status {
    margin: 0;
  }
}

@media (max-width: 520px) {
  .sidebar-inner {
    text-align: center;
  }

  .identity h1 {
    text-align: center;
  }

  .identity-subtitle {
    text-align: center;
  }

  .identity-note {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }

  .socials {
    justify-content: center;
  }

  .tab-rail {
    width: 100%;
    min-width: 0;
  }
}

@media (max-width: 720px) {
  .sidebar-inner,
  .content-inner {
    padding-left: 18px;
    padding-right: 18px;
  }

  .tab-rail {
    width: 100%;
    min-width: 0;
  }

  .tab-button {
    min-height: 28px;
    padding: 2px 6px;
    font-size: 8px;
  }

  .content-inner {
    padding-top: 0;
  }

  .books-grid {
    gap: 10px 6px;
  }

  .book-card {
    width: calc(50vw - 28px);
    max-width: 170px;
  }
}