/* dziban.net — design tokens */

:root {
  /* Paper palette (light) */
  --paper: #fdfaf4;
  --paper-2: #f7f2e8;
  --rule: #e0d9c8;
  --rule-strong: #c7bda4;
  --ink: #1a1710;
  --ink-2: #3a362c;
  --ink-3: #6b6555;
  --ink-4: #9a9384;
  --link: #6b3410;            /* sepia brown */
  --link-visited: #5a2a8a;    /* aged purple */
  --link-hover-bg: #f0e8d4;
  --accent: #8a3a10;
  --highlight: #fef3c7;

  /* Type */
  --font-serif: "equity-text", "Charter", "Iowan Old Style", Georgia, serif;
  --font-caps:  "equity-caps", "equity-text", Georgia, serif;
  --font-sans:  "Source Sans 3", "Source Sans Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono:  "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;

  --fs-base: 20px;
  --lh-base: 1.6;
  --measure: 38rem;

  /* Spacing */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
}

[data-theme="dark"] {
  --paper: #16161a;
  --paper-2: #1f1f25;
  --rule: #2e2e36;
  --rule-strong: #44444e;
  --ink: #e6e1d7;
  --ink-2: #c9c3b4;
  --ink-3: #8e8878;
  --ink-4: #5f5a4e;
  --link: #d9a574;
  --link-visited: #b79be0;
  --link-hover-bg: #24242c;
  --accent: #e8b488;
  --highlight: #3a341a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  font-feature-settings: "kern", "liga", "onum";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in oklch, var(--link) 40%, transparent);
  transition: background 80ms, border-color 80ms;
}
a:hover {
  background: var(--link-hover-bg);
  border-bottom-color: var(--link);
}
a:visited { color: var(--link-visited); }
a:visited { border-bottom-color: color-mix(in oklch, var(--link-visited) 40%, transparent); }

/* External link marker */
a[data-ext]::after {
  content: "↗";
  font-size: 0.75em;
  margin-left: 0.15em;
  color: var(--ink-3);
  vertical-align: super;
}

/* Monospace UI chrome */
.mono { font-family: var(--font-mono); font-size: 0.82em; letter-spacing: -0.01em; }
.sans { font-family: var(--font-sans); }
.small-caps {
  font-variant: small-caps;
  letter-spacing: 0.04em;
  font-feature-settings: "smcp";
}

/* Metadata block */
.meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-3);
  letter-spacing: -0.01em;
}
.meta .k { color: var(--ink-4); }
.meta .v { color: var(--ink-2); }

hr.rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: var(--sp-8) 0;
}
hr.rule-strong {
  border: 0;
  border-top: 1px solid var(--rule-strong);
  margin: var(--sp-8) 0;
}

/* Headings */
h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 2.2rem;
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--ink);
  margin: 0;
}
h2, h3, h4 {
  font-family: var(--font-caps);
  font-weight: 400;
  font-variant: small-caps;
  letter-spacing: 0.04em;
  line-height: 1.25;
  color: var(--ink);
  margin: 0;
}
h2 { font-size: 1.2rem; border-bottom: 1px solid var(--rule); padding-bottom: 0.3rem; margin-top: 2.75rem; margin-bottom: 1rem; letter-spacing: 0.06em; }
h3 { font-size: 1rem;   margin-top: 1.75rem; margin-bottom: 0.4rem; letter-spacing: 0.05em; }
h4 { font-size: 0.9rem; margin-top: 1.25rem; color: var(--ink-2); letter-spacing: 0.05em; }

p { margin: 0 0 1em 0; text-wrap: pretty; hyphens: auto; }

/* Drop cap helper */
.dropcap::first-letter {
  font-family: var(--font-serif);
  font-weight: 500;
  float: left;
  font-size: 3.6em;
  line-height: 0.85;
  padding: 0.1em 0.08em 0 0;
  color: var(--ink);
}

/* Code */
code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--paper-2);
  padding: 0.08em 0.3em;
  border-radius: 2px;
  border: 1px solid var(--rule);
}
pre {
  font-family: var(--font-mono);
  font-size: 0.82em;
  line-height: 1.5;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 0.9rem 1rem;
  overflow-x: auto;
  margin: 1.25em 0;
}
pre code { background: none; border: 0; padding: 0; }

blockquote {
  margin: 1.25em 0;
  padding: 0.2em 0 0.2em 1.25rem;
  border-left: 2px solid var(--rule-strong);
  color: var(--ink-2);
  font-style: italic;
}

table {
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 0.9em;
  margin: 1.25em 0;
  width: 100%;
}
th, td {
  padding: 0.35em 0.75em;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}
th {
  font-weight: 600;
  border-bottom: 1px solid var(--rule-strong);
  color: var(--ink-2);
}
tbody tr:hover { background: var(--paper-2); }

/* Site chrome */
.site-header {
  max-width: 78rem;
  margin: 0 auto;
  padding: 1.25rem 2rem 0.5rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-sans);
}
.site-header .brand {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1.4rem;
  letter-spacing: -0.015em;
  line-height: 1;
  border-bottom: 0;
  color: var(--ink);
  display: inline-flex;
  align-items: baseline;
  white-space: nowrap;
}
.site-header .brand .tld {
  font-style: normal;
  font-weight: 400;
  font-size: 0.6em;
  font-family: var(--font-caps);
  font-variant: small-caps;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  margin-left: 0.32em;
  padding-left: 0.32em;
  border-left: 1px solid var(--rule-strong);
  position: relative;
  top: -0.12em;
}
.site-header .brand:hover .tld { color: var(--accent); }
.site-header nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
}
.site-header nav a {
  color: var(--ink-2);
  border-bottom: 0;
}
.site-header nav a:hover { color: var(--link); background: transparent; }
.site-header nav a.current { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 5px; text-decoration-thickness: 2px; }

.site-footer {
  max-width: 78rem;
  margin: 4rem auto 2rem;
  padding: 1.25rem 2rem;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-4);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.site-footer a { color: var(--ink-3); border-bottom: 0; }
.site-footer a:hover { color: var(--link); }

/* Theme toggle */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  cursor: pointer;
  letter-spacing: 0.02em;
}
.theme-toggle:hover { border-color: var(--rule-strong); color: var(--ink); }

/* Tag chip */
.tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  background: transparent;
  border: 0;
  border-bottom: 1px dotted var(--rule-strong);
  padding: 0;
  cursor: pointer;
  letter-spacing: -0.01em;
}
.tag:hover { color: var(--link); border-bottom-color: var(--link); }
.tag.active { color: var(--accent); border-bottom-color: var(--accent); border-bottom-style: solid; }
.tag::before { content: "#"; opacity: 0.5; }

/* Link popup */
.link-popup {
  position: absolute;
  z-index: 100;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  box-shadow: 0 4px 24px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.05);
  padding: 0.85rem 1rem;
  max-width: 22rem;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-2);
  font-family: var(--font-serif);
  pointer-events: none;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 120ms, transform 120ms;
}
.link-popup.show { opacity: 1; transform: translateY(0); }
.link-popup .lp-title {
  font-weight: 600;
  color: var(--ink);
  display: block;
  margin-bottom: 0.2rem;
  font-size: 14.5px;
}
.link-popup .lp-meta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-4);
  margin-top: 0.5rem;
  letter-spacing: 0.02em;
}
.link-popup .lp-context {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-4);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
}
.link-popup-section .lp-title {
  font-family: var(--font-caps);
  font-variant: small-caps;
  letter-spacing: 0.04em;
  color: var(--accent);
}

/* Scrollbars subtle */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--rule-strong); border-radius: 4px; }

/* Heading copy-link affordance */
h2, h3, h4 { position: relative; }
.h-anchor {
  font-family: var(--font-serif);
  font-style: normal;
  font-weight: 400;
  font-size: 0.72em;
  color: var(--ink-4);
  text-decoration: none;
  border-bottom: 0;
  margin-left: 0.3em;
  padding: 0 0.15em;
  opacity: 0;
  transition: opacity 120ms, color 120ms;
  cursor: pointer;
  user-select: none;
  vertical-align: 0.1em;
  letter-spacing: 0;
}
h2:hover .h-anchor,
h3:hover .h-anchor,
h4:hover .h-anchor,
.h-anchor:focus { opacity: 1; }
.h-anchor:hover { color: var(--accent); background: transparent; border-bottom: 0; }

.h-anchor-flash {
  position: absolute;
  left: calc(100% + 0.4em);
  top: 50%;
  transform: translateY(-50%) translateX(-4px);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 1px 6px;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  opacity: 0;
  transition: opacity 160ms, transform 160ms;
  white-space: nowrap;
  pointer-events: none;
}
.h-anchor-flash.show {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}