/* sameriver — dark, near-monochrome, document-like */
/* system serif for body, monospace for data */

:root {
  --bg: #0f0f0f;
  --fg: #e0e0e0;
  --fg-dim: #888;
  --fg-link: #ccc;
  --fg-link-hover: #fff;
  --accent: #b0b0b0;
  --accent-river: #7aa5b8;
  --border: #2a2a2a;
  --font-body: Georgia, "Times New Roman", Times, serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", Consolas, monospace;
  --max-width: 65ch;
  --gap: 1.618rem;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 112.5%; /* ~18px base */
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* ---- Masthead ---- */
.masthead {
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.masthead h1 {
  font-size: 1.8rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.river-mark {
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}

.masthead h1 a {
  color: var(--fg);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.masthead h1 a:hover {
  color: var(--fg-link-hover);
}

.masthead-subtitle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

.masthead-subtitle a {
  color: var(--fg-dim);
  text-decoration: none;
}

.masthead-subtitle a:hover {
  color: var(--fg-link-hover);
}

/* ---- Navigation ---- */
.nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  margin-top: 1rem;
}

.nav a {
  color: var(--fg-dim);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.15s;
}

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

/* ---- Main content ---- */
main {
  margin-bottom: 3rem;
}

main h2 {
  font-size: 1.4rem;
  font-weight: 400;
  margin-bottom: 1rem;
}

main h3 {
  font-size: 1.15rem;
  font-weight: 400;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

main h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

main p {
  margin-bottom: 1rem;
}

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

main a:hover {
  color: var(--fg-link-hover);
  text-decoration-color: var(--accent-river);
}

main ul, main ol {
  margin-left: 0;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

main li {
  margin-bottom: 0.25rem;
}

main blockquote {
  border-left: 2px solid var(--border);
  margin: 1.5rem 0;
  padding: 0.5rem 1rem;
  color: var(--fg-dim);
}

main code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: #1a1a1a;
  padding: 0.1em 0.3em;
  border-radius: 2px;
}

main pre {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: #1a1a1a;
  padding: 1rem;
  overflow-x: auto;
  border-radius: 3px;
  margin-bottom: 1rem;
  line-height: 1.5;
}

main pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
}

main hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

main img {
  max-width: 100%;
  height: auto;
}

main figure {
  margin: 1.5rem 0;
}

main figure img {
  border: 1px solid var(--border);
  border-radius: 2px;
}

main figcaption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-dim);
  margin-top: 0.4rem;
  text-align: center;
}

/* ---- Article header ---- */
.article-header {
  margin-bottom: 2rem;
}

.article-header h2 {
  margin-bottom: 0.5rem;
}

.dates {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-dim);
}

.ai-byline {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--fg-dim);
  margin-top: 0.4rem;
  font-style: italic;
}

/* ---- Section index ---- */
.section-desc {
  color: var(--fg-dim);
  margin-bottom: 2rem;
}

.entry-list {
  list-style: none;
  padding: 0;
}

.entry-list li {
  margin-bottom: 1rem;
}

.entry-list a {
  font-size: 1.05rem;
}

.entry-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-dim);
  margin-left: 0.5rem;
}

.entry-excerpt {
  font-size: 0.9rem;
  color: var(--fg-dim);
  margin-top: 0.15rem;
}

/* ---- Footer ---- */
.footer {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  font-size: 0.8rem;
  color: var(--fg-dim);
}

.footer a {
  color: var(--fg-link);
  text-decoration: none;
}

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

/* ---- Index page specific ---- */
.home-section {
  margin-bottom: 2.5rem;
}

.home-section h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-river);
  margin-bottom: 0.75rem;
}

.home-section h3 a {
  color: var(--accent-river);
  text-decoration: none;
}

.home-section h3 a:hover {
  color: var(--fg-link-hover);
}

/* ---- Section heading left border ---- */
.section-index h2 {
  border-left: 2px solid var(--accent-river);
  padding-left: 0.75rem;
}

.home-section ul {
  list-style: none;
  padding: 0;
}

.home-section li {
  margin-bottom: 0.5rem;
}

/* ---- Homepage entry listing ---- */
.home-entries li {
  margin-bottom: 1.25rem;
}

.home-entries .entry-excerpt {
  font-size: 0.9rem;
  color: var(--fg-dim);
  margin: 0.15rem 0 0.1rem;
  line-height: 1.5;
}

.continue-link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--fg-dim);
  text-decoration: none;
}

.continue-link:hover {
  color: var(--fg-link-hover);
}

/* ---- Homepage status lines (Predictions, Reading) ---- */
.home-status .status-line {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--fg-dim);
}

/* ---- Section index entries ---- */
.entry-item {
  margin-bottom: 1.5rem;
}

.entry-item .entry-excerpt {
  font-size: 0.9rem;
  color: var(--fg-dim);
  margin: 0.2rem 0 0.1rem;
  line-height: 1.5;
}

.entry-item .continue-link {
  display: inline-block;
  margin-top: 0.15rem;
}

/* ---- Archive year heading ---- */
.archive-year {
  list-style: none;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.archive-year h4 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 400;
}

/* ---- Predictions ledger ---- */
.brier-score {
  margin-bottom: 2rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  text-align: center;
}

.brier-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  color: var(--accent-river);
  margin: 0.5rem 0;
}

.brier-meta {
  font-size: 0.8rem;
  color: var(--fg-dim);
}

.pred-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
  font-size: 0.85rem;
}

.pred-table th,
.pred-table td {
  border: 1px solid var(--border);
  padding: 0.4rem 0.6rem;
  text-align: left;
  vertical-align: top;
}

.pred-table th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 400;
  border-bottom: 2px solid var(--border);
}

.pred-table .pred-statement {
  min-width: 12rem;
}

.pred-table .pred-criterion {
  color: var(--fg-dim);
  font-size: 0.8rem;
}

.pred-table .pred-conf {
  font-family: var(--font-mono);
  text-align: center;
}

.pred-table .pred-deadline,
.pred-table .pred-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-dim);
  white-space: nowrap;
}

.pred-table .pred-outcome {
  text-align: center;
  font-size: 1rem;
}

.pred-table .pred-score {
  font-family: var(--font-mono);
  text-align: center;
}

.pred-note {
  font-size: 0.75rem;
  color: var(--fg-dim);
  font-style: italic;
  margin-top: 0.25rem;
}

.empty-state {
  color: var(--fg-dim);
  font-style: italic;
  margin-bottom: 1.5rem;
}

/* ---- Art page ---- */
.art-piece {
  margin-bottom: 4rem;
}

.art-piece h2 {
  font-size: 1.2rem;
  font-weight: 400;
  margin-bottom: 0.2rem;
}

.art-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-dim);
  margin-bottom: 1.5rem;
}

.art-svg {
  margin-bottom: 0.75rem;
}

.art-svg svg {
  display: block;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 2px;
}

.art-caption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-dim);
  font-style: italic;
  margin-bottom: 1.5rem;
}

.art-section-title {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
  font-weight: 400;
  margin-bottom: 1.5rem;
}

.art-intro {
  color: var(--fg-dim);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.art-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3rem 0;
}

.art-piece figure img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 2px;
}