/* ===========================
   THE INFERENCE — Stylesheet
   =========================== */

:root {
  --bg: #faf8f5;
  --text: #2a2a2a;
  --text-secondary: #777;
  --code-bg: #f0ede8;
  --code-border: #8b7355;
  --hr-color: #ccc;
  --accent: #8b7355;
  --nav-bg: rgba(250, 248, 245, 0.95);
  --progress-bg: transparent;
  --link: #6b5a3e;
  --link-hover: #4a3d2a;
  --btn-bg: #2a2a2a;
  --btn-text: #faf8f5;
  --btn-hover: #444;
}

[data-theme="dark"] {
  --bg: #1a1a1e;
  --text: #d4d0c8;
  --text-secondary: #888;
  --code-bg: #252528;
  --code-border: #b89f7a;
  --hr-color: #333;
  --accent: #b89f7a;
  --nav-bg: rgba(26, 26, 30, 0.95);
  --link: #c4a97a;
  --link-hover: #ddc49a;
  --btn-bg: #d4d0c8;
  --btn-text: #1a1a1e;
  --btn-hover: #bbb;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1a1a1e;
    --text: #d4d0c8;
    --text-secondary: #888;
    --code-bg: #252528;
    --code-border: #b89f7a;
    --hr-color: #333;
    --accent: #b89f7a;
    --nav-bg: rgba(26, 26, 30, 0.95);
    --link: #c4a97a;
    --link-hover: #ddc49a;
    --btn-bg: #d4d0c8;
    --btn-text: #1a1a1e;
    --btn-hover: #bbb;
  }
}

/* --- Reset & Base --- */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, serif;
  font-size: 19px;
  line-height: 1.7;
  transition: background 0.3s ease, color 0.3s ease;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--link-hover);
}

/* --- Progress Bar --- */

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--accent);
  z-index: 1001;
  transition: width 0.1s linear;
  width: 0%;
}

/* --- Navigation --- */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--hr-color);
  padding: 0.6rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  transition: transform 0.3s ease;
}

.site-nav.hidden {
  transform: translateY(-100%);
}

.nav-title {
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

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

.nav-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.chapter-select {
  font-family: inherit;
  font-size: 0.8rem;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--hr-color);
  border-radius: 3px;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  max-width: 200px;
}

.chapter-select:focus {
  outline: 1px solid var(--accent);
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1rem;
  padding: 0.25rem;
  line-height: 1;
  transition: color 0.2s;
}

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

/* --- Content Container --- */

.content {
  max-width: 38em;
  margin: 0 auto;
  padding: 5rem 1.5rem 4rem;
  animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- Novel Typography --- */

.novel-content h1 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 2rem 0 0.5rem;
  color: var(--text);
}

.novel-content h1 + h3 {
  text-align: center;
  font-size: 1rem;
  font-weight: 400;
  font-style: italic;
  color: var(--text-secondary);
  margin: 0 0 3rem;
  letter-spacing: 0.05em;
}

/* Part headings */
.novel-content h2 {
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.95rem;
  font-weight: 400;
  margin: 5rem 0 3rem;
  color: var(--text-secondary);
}

/* Chapter headings */
.novel-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 3rem 0 1.5rem;
  color: var(--text);
}

.novel-content p {
  margin: 0 0 1.2em;
  text-indent: 0;
}

.novel-content em {
  font-style: italic;
}

.novel-content strong {
  font-weight: 700;
}

/* Scene breaks */
.novel-content hr {
  border: none;
  text-align: center;
  margin: 2.5rem auto;
}

.novel-content hr::after {
  content: '\2022\2009\2009\2022\2009\2009\2022';
  color: var(--text-secondary);
  font-size: 0.7rem;
  letter-spacing: 0;
}

/* Sean's text-file observations */
.novel-content pre {
  background: var(--code-bg);
  border-left: 3px solid var(--code-border);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  font-family: 'SF Mono', 'Cascadia Code', 'Fira Mono', 'Menlo', monospace;
  font-size: 0.82em;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-x: auto;
  border-radius: 2px;
  color: var(--text);
}

.novel-content pre code {
  font-family: inherit;
  font-size: inherit;
  background: none;
  padding: 0;
}

.novel-content code {
  font-family: 'SF Mono', 'Cascadia Code', 'Fira Mono', 'Menlo', monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 0.1em 0.3em;
  border-radius: 2px;
}

/* Epilogue — slight fade, the context window closing */
#epilogue,
section[id*="epilogue"] {
  opacity: 0.92;
}

/* Author's note */
.novel-content section:last-of-type {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--hr-color);
}

/* Generous trailing space */
.novel-end {
  padding-bottom: 6rem;
}

/* --- Landing Page --- */

.landing {
  text-align: center;
  max-width: 36em;
  margin: 0 auto;
  padding: 6rem 1.5rem 4rem;
}

.landing h1 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 0.3rem;
}

.landing .subtitle {
  font-size: 1.1rem;
  font-style: italic;
  color: var(--text-secondary);
  margin: 0 0 2.5rem;
}

.landing .intro {
  text-align: left;
  margin-bottom: 2.5rem;
}

.landing .intro p {
  margin: 0 0 1em;
}

.landing .cta-primary {
  display: inline-block;
  background: var(--btn-bg);
  color: var(--btn-text);
  text-decoration: none;
  padding: 0.75rem 2rem;
  font-family: inherit;
  font-size: 1rem;
  border-radius: 3px;
  transition: background 0.2s;
  margin-bottom: 3rem;
}

.landing .cta-primary:hover {
  background: var(--btn-hover);
  color: var(--btn-text);
}

.landing .about-section {
  text-align: left;
  border-top: 1px solid var(--hr-color);
  padding-top: 2rem;
  margin-top: 3rem;
}

.landing .about-section h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.landing .secondary-links {
  display: flex;
  gap: 2rem;
  justify-content: center;
  margin-top: 3rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

/* --- Discuss Page --- */

.discuss {
  max-width: 38em;
  margin: 0 auto;
  padding: 5rem 1.5rem 4rem;
}

.discuss h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.discuss .discuss-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0 0 2rem;
}

.discuss .back-links {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--hr-color);
  font-size: 0.9rem;
  display: flex;
  gap: 2rem;
}

/* --- Footer --- */

.site-footer {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.site-footer .timestamp {
  font-family: 'SF Mono', 'Cascadia Code', 'Fira Mono', 'Menlo', monospace;
  opacity: 0.6;
}

/* --- Responsive --- */

@media (max-width: 768px) {
  body {
    font-size: 18px;
  }

  .content, .landing, .discuss {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .novel-content h1 {
    font-size: 1.6rem;
  }

  .novel-content h2 {
    margin: 4rem 0 2rem;
  }

  .landing h1 {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 17px;
    line-height: 1.65;
  }

  .content, .landing, .discuss {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .novel-content h1 {
    font-size: 1.4rem;
  }

  .novel-content pre {
    padding: 1rem;
    font-size: 0.78em;
  }

  .chapter-select {
    max-width: 140px;
  }

  .landing .secondary-links {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
}