/* DiffLog site — Web 1.0 revival, modern guts */

:root {
  --paper: #ffffff;
  --ink: #231f20;
  --panel: #d1d1d1;
  --green: #5ba35b;
  --red: #ca3431;
  --border-light: #ffffff;
  --border-shadow: #7a7a7a;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--panel);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", Times, serif;
  font-size: 16px;
  line-height: 1.5;
  background-image:
    linear-gradient(var(--panel) 1px, transparent 1px),
    linear-gradient(90deg, var(--panel) 1px, transparent 1px);
}

a {
  color: var(--green);
  text-decoration: underline;
}

a:visited {
  color: #3f7a3f;
}

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

/* ---- page frame ---- */

.page {
  max-width: 860px;
  margin: 24px auto;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 var(--border-shadow);
}

/* ---- marquee ticker ---- */

.ticker {
  background: var(--ink);
  color: var(--panel);
  font-family: "Courier New", Courier, monospace;
  font-size: 13px;
  letter-spacing: 0.5px;
  overflow: hidden;
  white-space: nowrap;
  border-bottom: 2px solid var(--green);
}

.ticker__track {
  display: inline-block;
  padding-left: 100%;
  animation: ticker-scroll 22s linear infinite;
}

.ticker__track span {
  padding: 4px 2em;
  display: inline-block;
}

@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

@media (prefers-reduced-motion: reduce) {
  .ticker__track {
    animation: none;
    padding-left: 1em;
  }
}

/* ---- nav bar ---- */

nav.topnav {
  background: var(--panel);
  border-bottom: 2px solid var(--ink);
  padding: 10px 20px;
  text-align: center;
  font-weight: bold;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  row-gap: 4px;
}

nav.topnav a {
  color: var(--ink);
  text-decoration: none;
  padding: 2px 6px;
}

nav.topnav a:hover {
  color: var(--paper);
  background: var(--red);
}

nav.topnav .sep {
  color: var(--ink);
  padding: 0 4px;
}

nav.topnav a.current {
  color: var(--paper);
  background: var(--green);
}

/* ---- header / banner ---- */

header.banner {
  text-align: center;
  padding: 28px 20px 18px;
  border-bottom: 4px double var(--ink);
}

header.banner img.logo {
  width: 260px;
  max-width: 80%;
  height: auto;
  image-rendering: -webkit-optimize-contrast;
}

header.banner p.tagline {
  font-style: italic;
  font-size: 1.1em;
  margin: 10px 0 0;
}

.badges {
  margin-top: 14px;
}

.badges img {
  vertical-align: middle;
  margin: 2px 3px;
}

/* ---- content ---- */

main {
  padding: 24px 32px 12px;
}

h1, h2, h3 {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
}

h2 {
  border-bottom: 3px solid var(--green);
  padding-bottom: 4px;
  margin-top: 2.2em;
}

h2 .bullet {
  color: var(--red);
}

h3 {
  color: var(--ink);
  border-left: 6px solid var(--red);
  padding-left: 10px;
}

hr.dotted {
  border: none;
  border-top: 3px dotted var(--ink);
  margin: 24px 0;
}

/* ---- panels (beveled 90s window) ---- */

.panel {
  background: var(--panel);
  border-top: 2px solid var(--border-light);
  border-left: 2px solid var(--border-light);
  border-right: 2px solid var(--border-shadow);
  border-bottom: 2px solid var(--border-shadow);
  padding: 16px;
  margin: 16px 0;
}

.panel--inset {
  border-top: 2px solid var(--border-shadow);
  border-left: 2px solid var(--border-shadow);
  border-right: 2px solid var(--border-light);
  border-bottom: 2px solid var(--border-light);
  background: #eaeaea;
}

.titlebar {
  background: var(--ink);
  color: var(--paper);
  font-family: "Courier New", Courier, monospace;
  font-weight: bold;
  font-size: 13px;
  padding: 4px 8px;
  margin: -16px -16px 12px -16px;
  display: flex;
  justify-content: space-between;
}

.titlebar .dots span {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--panel);
  margin-left: 4px;
}

/* ---- code blocks ---- */

pre {
  background: #eaeaea;
  border-top: 2px solid var(--border-shadow);
  border-left: 2px solid var(--border-shadow);
  border-right: 2px solid var(--border-light);
  border-bottom: 2px solid var(--border-light);
  padding: 12px 14px;
  overflow-x: auto;
  font-family: "Courier New", Courier, monospace;
  font-size: 13.5px;
  line-height: 1.4;
}

code {
  font-family: "Courier New", Courier, monospace;
  background: var(--panel);
  padding: 1px 4px;
  border: 1px solid var(--border-shadow);
}

pre code {
  background: none;
  border: none;
  padding: 0;
}

/* ---- lists ---- */

ul.retro-list {
  list-style: none;
  padding-left: 0;
}

ul.retro-list li {
  padding: 4px 0 4px 26px;
  position: relative;
}

ul.retro-list li::before {
  content: "\25A0";
  color: var(--green);
  position: absolute;
  left: 0;
  top: 4px;
  font-size: 0.85em;
}

/* ---- tables ---- */

.table-scroll {
  overflow-x: auto;
  margin: 14px 0 22px;
}

table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14.5px;
  margin: 0;
}

caption {
  text-align: left;
  font-weight: bold;
  font-style: italic;
  margin-bottom: 6px;
}

th, td {
  border: 1px solid var(--ink);
  padding: 6px 10px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--ink);
  color: var(--paper);
  font-family: "Courier New", Courier, monospace;
  font-size: 13px;
}

tr:nth-child(even) td {
  background: var(--panel);
}

td code {
  white-space: nowrap;
}

/* ---- buttons ---- */

.btn {
  display: inline-block;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: bold;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  background: var(--panel);
  border-top: 2px solid var(--border-light);
  border-left: 2px solid var(--border-light);
  border-right: 2px solid var(--border-shadow);
  border-bottom: 2px solid var(--border-shadow);
  padding: 8px 18px;
  margin: 4px 6px 4px 0;
}

.btn:hover {
  color: var(--ink);
  background: #c3e6c3;
  text-decoration: none;
}

.btn:active,
.btn:focus {
  border-top: 2px solid var(--border-shadow);
  border-left: 2px solid var(--border-shadow);
  border-right: 2px solid var(--border-light);
  border-bottom: 2px solid var(--border-light);
}

.btn--accent {
  background: var(--green);
  color: var(--paper);
}

.btn--accent:hover {
  background: #4c8f4c;
  color: var(--paper);
}

.button-row {
  text-align: center;
  margin: 20px 0;
}

/* ---- screenshot frame ---- */

.screenshot-frame {
  text-align: center;
  margin: 20px 0;
}

.screenshot-frame img {
  max-width: 100%;
  border: 2px solid var(--ink);
  box-shadow: 5px 5px 0 var(--border-shadow);
}

.screenshot-frame figcaption {
  font-style: italic;
  font-size: 0.9em;
  margin-top: 8px;
  color: #444;
}

/* ---- callouts ---- */

.callout {
  border: 2px solid var(--red);
  background: #fbe9e8;
  padding: 12px 16px;
  margin: 16px 0;
}

.callout strong {
  color: var(--red);
}

.callout--tip {
  border-color: var(--green);
  background: #eaf5ea;
}

.callout--tip strong {
  color: var(--green);
}

/* ---- hit counter (decorative) ---- */

.hitcounter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Courier New", Courier, monospace;
  font-size: 12px;
}

.hitcounter .digits {
  background: #000;
  color: #5ba35b;
  padding: 3px 6px;
  letter-spacing: 2px;
  border: 1px solid var(--border-shadow);
}

/* ---- footer ---- */

footer {
  border-top: 4px double var(--ink);
  padding: 18px 32px;
  font-size: 13px;
  text-align: center;
  background: var(--panel);
}

footer .foot-links a {
  margin: 0 6px;
}

footer .fineprint {
  margin-top: 10px;
  color: #444;
}

.center {
  text-align: center;
}

.small {
  font-size: 0.85em;
}

@media (max-width: 640px) {
  .page {
    margin: 0;
    border-left: none;
    border-right: none;
    box-shadow: none;
  }
  main {
    padding: 18px 16px;
  }
  header.banner {
    padding: 20px 12px 14px;
  }
  footer {
    padding: 16px 14px;
  }
}