/* ── Reset & Base ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0e0e12;
  --bg-surface: rgba(22, 22, 29, 0.7);
  --bg-card: rgba(28, 28, 38, 0.7);
  --text: #d4d4d8;
  --text-muted: #8888a0;
  --accent: #d4d4d8;
  --accent-dim: #9999a8;
  --border: #2a2a3a;
  --font-body: 'EB Garamond', 'Georgia', serif;
  --font-ui: 'Montserrat', system-ui, -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

/* ── Layered animated background ── */
.bg-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  visibility: hidden;
  opacity: 0;
}

.bg-layer.loaded {
  visibility: visible;
  opacity: 1;
  transition: opacity 1s ease;
}

.bg-bottom {
  z-index: -4;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}

.bg-sky {
  z-index: -2;
  background-size: auto 120%;
  background-repeat: repeat-x;
  background-position: top center;
}

.bg-sky.loaded {
  opacity: 0.8;
  transition: opacity 1s ease 0.15s;
  animation: sky-scroll 240s linear infinite;
}

@keyframes sky-scroll {
  from { background-position: 0 0; }
  to   { background-position: -2000px 0; }
}

.bg-top {
  z-index: -1;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: linear-gradient(to right,
    transparent,
    rgba(0, 0, 0, 0.75) 20%,
    rgba(0, 0, 0, 0.75) 80%,
    transparent
  );
  z-index: 0;
  pointer-events: none;
}

body > * {
  position: relative;
  z-index: 1;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #ffffff;
}

/* ── Navigation ── */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(0, 0, 0, 0.95);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.reading-progress-bar {
  position: fixed;
  top: 57px;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--accent);
  transition: width 0.05s linear;
  z-index: 9999;
}

.nav-logo {
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
}

.nav-logo:hover {
  color: var(--accent);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ── Footer ── */
.site-footer {
  margin-top: auto;
  padding: 2rem;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* ── Home / About ── */
.page-home {
  max-width: 700px;
  margin: 0 auto;
  padding: 5rem;
  font-family: 'EB Garamond', 'Georgia', serif;
  border-left: 1px solid;
  border-right: 1px solid;
  border-image: linear-gradient(to bottom,
    transparent 5%,
    rgba(255, 255, 255, 0.75)20%,
    rgb(255, 255, 255, .75) 60%,
    transparent 95%
  ) 1;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.7);
}

.hero {
  text-align: center;
  padding: 5rem 1rem 3rem;
  margin-top: -100px;
}

.hero h1 {
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
}

.tagline {
  font-family: 'EB Garamond', 'Georgia', serif;
  font-style: normal;
  color: var(--text);
  font-size: 1.4rem;
  letter-spacing: 0.05em;
}

.about {
  margin-bottom: 3rem;
}

.about.content-warning p {
  color: #c87878;
}

.about.content-warning h2 {
  color: #c87878;
}

.about h2 {
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 1.6rem;
  margin-bottom: 1rem;
  color: var(--text);
  font-weight: 600;
}

.about p {
  color: var(--text);
  margin-bottom: 1.5rem;
}

.about .character-desc {
  margin-left: 4rem;
  margin-right: 4rem;
}

/* ── Glitch swap ── */
.glitch-swap {
  position: relative;
}

.glitch-swap.glitching {
  animation: glitch-jitter 0.06s steps(1) infinite;
}

.glitch-swap.glitching::after {
  content: '';
  position: absolute;
  inset: -2px;
  background: inherit;
  mix-blend-mode: difference;
  opacity: 0.15;
  animation: glitch-shift 0.08s steps(1) infinite;
}

@keyframes glitch-jitter {
  0%   { transform: translate(0, 0); }
  20%  { transform: translate(-2px, 1px); }
  40%  { transform: translate(1px, -1px); }
  60%  { transform: translate(-1px, -2px); }
  80%  { transform: translate(2px, 1px); }
  100% { transform: translate(0, 0); }
}

@keyframes glitch-shift {
  0%   { clip-path: inset(0 0 80% 0); transform: translate(3px, 0); }
  25%  { clip-path: inset(40% 0 20% 0); transform: translate(-3px, 0); }
  50%  { clip-path: inset(70% 0 0 0); transform: translate(2px, 0); }
  75%  { clip-path: inset(10% 0 60% 0); transform: translate(-2px, 0); }
  100% { clip-path: inset(0 0 80% 0); transform: translate(3px, 0); }
}

/* ── Read Page ── */
.page-read {
  display: flex;
  flex: 1;
  height: calc(100vh - 60px);
  position: relative;
}


.toc-toggle {
  position: fixed;
  top: calc(57px + 0.75rem);
  left: max(180px, calc(50vw - 375px));
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1rem;
  padding: 0.3rem 0.5rem;
  border-radius: 0 4px 4px 0;
  border-left: none;
  cursor: pointer;
  z-index: 12;
  transition: color 0.2s, left 0.3s ease;
  line-height: 1;
}

.toc-toggle:hover {
  color: var(--text);
}

.toc-chevron::before {
  content: '\2039';
  font-size: 1.4rem;
  display: inline-block;
  transition: transform 0.3s ease;
}

.toc.hidden ~ .toc-toggle {
  left: 0;
  border-left: 1px solid var(--border);
  border-radius: 0 4px 4px 0;
}

.toc.hidden ~ .toc-toggle .toc-chevron::before {
  transform: rotate(180deg);
}

.toc {
  width: calc(50vw - 375px);
  min-width: 180px;
  padding: 2rem 1.5rem;
  background: rgba(0, 0, 0, 0.88);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  position: fixed;
  top: 57px;
  left: 0;
  height: calc(100vh - 57px);
  z-index: 11;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.toc.hidden {
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
}

.toc h2 {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.toc ul {
  list-style: none;
}

.toc-book > span {
  display: block;
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.toc-part > span {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
  margin-top: 1.25rem;
}

.toc-part:first-child > span {
  margin-top: 0;
}

.toc-link {
  display: block;
  padding: 0.3rem 0 0.3rem 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.toc-link:hover,
.toc-link.active {
  color: var(--text);
  border-left-color: var(--accent);
}

.reader {
  flex: 1;
  padding: 3rem 4rem;
  max-width: 750px;
  margin: 0 auto;
  overflow-y: auto;
  height: 100%;
  scrollbar-width: none;
  background: linear-gradient(to right, transparent, rgba(0, 0, 0, 0.85) 5%, rgba(0, 0, 0, 0.85) 85%, rgba(0, 0, 0, 0.3) 95%, transparent);
  border-right: 1px solid;
  border-image: linear-gradient(to bottom,
    transparent 5%,
    rgba(255, 255, 255, 0.75) 20%,
    rgba(255, 255, 255, 0.75) 60%,
    transparent 95%
  ) 1;
}

.reader::-webkit-scrollbar {
  display: none;
}

.chapter-header {
  margin-bottom: 2.5rem;
}

.chapter-image-wrap {
  text-align: center;
  margin-bottom: 0.75rem;
}

.chapter-image {
  display: inline-block;
  max-width: 120px;
  max-height: 120px;
  opacity: 0.85;
}

.chapter-tip {
  text-align: center;
  font-family: var(--font-ui);
  font-style: italic;
  font-size: 0.88rem;
  color: var(--text-muted);
  text-indent: 0;
  max-width: 500px;
  margin: 0 auto 1.5rem;
}

.chapter-number {
  display: block;
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 1rem;
  letter-spacing: 0.1em;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.chapter-name {
  display: block;
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 1rem;
}

.chapter-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0 0 1.5rem;
}

/* ── Next chapter button ── */
.next-chapter-btn {
  display: block;
  margin: 3rem auto 1rem;
  padding: 0.6rem 2rem;
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.02em;
  color: var(--text);
  background: rgba(212, 212, 216, 0.08);
  border: 1px solid var(--accent-dim);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.next-chapter-btn:hover {
  background: rgba(212, 212, 216, 0.15);
  border-color: var(--accent);
}

/* ── CYOA interactive choices ── */
.cyoa-choice {
  cursor: pointer;
  color: #c8b06c;
  padding: 0.3rem 0.6rem;
  margin: 0.2rem 0;
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.cyoa-choice:hover {
  color: #e2ca7a;
  border-left-color: #c8b06c;
  background: rgba(200, 176, 108, 0.06);
}

.cyoa-goto {
  cursor: pointer;
  color: #c8b06c;
  text-align: center;
  font-weight: 600;
  padding: 0.5rem;
  transition: color 0.2s, text-shadow 0.2s;
}

.cyoa-goto:hover {
  color: #e2ca7a;
  text-shadow: 0 0 10px rgba(200, 176, 108, 0.3);
}

.cyoa-anchor {
  scroll-margin-top: 6rem;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  margin-top: 1.8rem;
  padding-top: 1.4rem;
}

.cyoa-section-letter {
  font-size: 1.3em;
  font-weight: 700;
  color: var(--accent, #c8b06c);
  font-style: normal;
  line-height: 1;
}

.cyoa-highlight {
  animation: cyoa-flash 1.5s ease-out;
}

@keyframes cyoa-flash {
  0% { background-color: rgba(200, 176, 108, 0.12); }
  100% { background-color: transparent; }
}

/* ── Font-size controls ── */
.font-size-controls {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 0.4rem 0;
  justify-content: flex-end;
}

.font-size-controls button {
  font-family: var(--font-ui);
  font-weight: 600;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 4px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  line-height: 1;
}

.font-size-controls button:hover {
  color: var(--text);
  border-color: var(--accent-dim);
}

.font-size-controls .font-btn-decrease {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
}

.font-size-controls .font-btn-increase {
  font-size: 1rem;
  padding: 0.2rem 0.5rem;
}

.font-size-controls .font-size-label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: var(--text-muted);
  min-width: 2.5rem;
  text-align: center;
  user-select: none;
}

.chapter-body {
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 1.065rem;
}

.chapter-body p {
  margin-bottom: 1.25rem;
  text-indent: 1.5em;
}

.chapter-body p:first-of-type {
  text-indent: 0;
}

.reader-placeholder {
  color: var(--text-muted);
  font-style: italic;
  text-indent: 0;
}

.chapter-pages {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.chapter-page {
  width: 100%;
  height: auto;
  display: block;
}

/* ── World Page ── */
.page-world {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.page-world h1 {
  font-size: 2.2rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
}

.world-intro {
  color: var(--text-muted);
  margin-bottom: 3rem;
  font-size: 1.05rem;
}

.world-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.world-card {
  background: #000000;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
  cursor: pointer;
}

.world-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-2px);
}

.world-card h3 {
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--accent);
}

.world-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ── Concept Art Gallery (inside .reader panel) ── */
.gallery-reader {
  max-width: 750px;
  margin-left: max(0px, calc(50vw - 375px));
}

@media (max-width: 1110px) {
  .gallery-reader {
    margin-left: 0;
  }
}

.gallery-notice {
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 0.95rem;
  font-style: italic;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.gallery-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.gallery-card {
  display: flex;
  background: #000000;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.2s;
}

.gallery-card:hover,
.gallery-card:focus-visible {
  border-color: var(--accent-dim);
  outline: none;
}

.gallery-img-wrap {
  width: 240px;
  min-width: 240px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.4);
}

.gallery-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}

.gallery-card:hover .gallery-img-wrap img {
  transform: scale(1.04);
}

.gallery-card-text {
  padding: 1.25rem 1.5rem;
  flex: 1;
}

.gallery-card-text h3 {
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.gallery-card-subtitle {
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 1.2rem;
  font-style: italic;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.gallery-card-text p {
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Lightbox ── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  display: flex;
  max-width: 90vw;
  max-height: 85vh;
  gap: 2rem;
  align-items: center;
}

.lightbox-img {
  max-width: 60vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.lightbox-info {
  max-width: 320px;
  padding: 1rem 0;
  align-self: center;
}

.lightbox-title {
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1rem;
}

.lightbox-desc {
  font-family: 'EB Garamond', 'Georgia', serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
  z-index: 10;
}

.lightbox-close:hover {
  color: var(--text);
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 3rem;
  cursor: pointer;
  line-height: 1;
  padding: 1rem;
  transition: color 0.2s;
  z-index: 10;
}

.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }

.lightbox-prev:hover,
.lightbox-next:hover {
  color: var(--text);
}

/* ── Mid-width: TOC overlays as fixed panel ── */
@media (max-width: 1110px) {
  .toc {
    width: 230px;
    min-width: unset;
  }

  .toc-toggle {
    left: 230px;
  }

  .toc.hidden ~ .toc-toggle {
    left: 0;
  }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  /* Remove the dark gradient overlay on mobile */
  body::before {
    display: none;
  }

  .site-nav {
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
  }

  .nav-links {
    gap: 1.25rem;
  }

  /* Homepage */
  .page-home {
    padding: 2rem 1.5rem;
    border-left: none;
    border-right: none;
    border-image: none;
    background: rgba(0, 0, 0, 0.75);
  }

  .hero {
    padding: 2rem 0.5rem 1.5rem;
    margin-top: 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .tagline {
    font-size: 1.1rem;
  }

  .about h2 {
    font-size: 1.3rem;
  }

  .about p {
    font-size: 0.95rem;
  }

  .about .character-desc {
    margin-left: 1rem;
    margin-right: 1rem;
  }

  /* Read page */
  .page-read {
    flex-direction: column;
  }

  .font-size-controls {
    position: fixed;
    top: calc(var(--nav-h, 90px) + 0.35rem);
    right: 0.5rem;
    z-index: 12;
    padding: 0;
  }

  .toc-toggle {
    left: 0;
    top: calc(var(--nav-h, 90px) + 0.5rem);
    border-left: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.85);
    padding: 0.3rem 0.4rem;
    font-size: 10px;
  }

  .toc:not(.hidden) ~ .toc-toggle {
    left: 230px;
    border-left: none;
  }

  .toc {
    width: 230px;
    min-width: unset;
    position: fixed;
    top: var(--nav-h, 90px);
    height: calc(100vh - var(--nav-h, 90px));
    border-right: 1px solid var(--border);
    border-bottom: none;
    padding: 1.5rem;
  }

  .reader {
    padding: 2rem 1.5rem;
    background: rgba(0, 0, 0, 0.93);
    border-right: none;
    border-image: none;
  }

  /* Gallery */
  .gallery-card {
    flex-direction: column;
  }

  .gallery-img-wrap {
    width: 100%;
    min-width: unset;
    aspect-ratio: 16 / 10;
  }

  .lightbox-content {
    flex-direction: column;
    gap: 1rem;
  }

  .lightbox-img {
    max-width: 90vw;
    max-height: 50vh;
  }

  .lightbox-info {
    max-width: 90vw;
    padding: 0 1rem 1rem;
    text-align: center;
  }
}