/* sumo theme: plain paper, serif text, neutral greys.
   Buttons are deliberately left as the browser default. */
:root {
  --width: 640px;
  --font-text: Charter, "Bitstream Charter", "Iowan Old Style", Georgia, serif;
  --font-head: "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --paper: #fafafa;
  --ink: #222;
  --muted: #777;
  --accent: #1a4fa0;
  --accent-visited: #5b4a8a;
  --rule: #ddd;
  --code-bg: #eee;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #181818;
    --ink: #ddd;
    --muted: #999;
    --accent: #7fb0f0;
    --accent-visited: #b3a4d8;
    --rule: #333;
    --code-bg: #242424;
  }
}

body {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  min-height: 100vh;
  min-height: 100dvh;
  max-width: var(--width);
  margin: auto;
  padding: 32px 20px 20px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-text);
  font-size: 1.1em;
  line-height: 1.65;
  overflow-wrap: break-word;
}

main { flex: 1; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

header { border-bottom: 1px solid var(--rule); margin-bottom: 1.5em; padding-bottom: 0.6em; }
nav { font-family: var(--font-head); font-size: 0.9em; }
nav a { margin-right: 14px; text-decoration: none; }
nav a:hover { text-decoration: underline; }

.title { color: var(--ink); text-decoration: none; }
.title h2 { margin: 0 0 0.2em; font-size: 1.6em; }
.subtitle { margin: 0 0 0.6em; color: var(--muted); }

time {
  font-family: var(--font-mono);
  font-size: 0.8em;
  color: var(--muted);
}

hr { border: 0; border-top: 1px solid var(--rule); margin: 2em 0; }
img { max-width: 100%; border-radius: 4px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--rule); }

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 1px 5px;
  background: var(--code-bg);
  border-radius: 4px;
}

pre {
  padding: 14px 16px;
  background: var(--code-bg);
  border-radius: 6px;
  overflow-x: auto;
}
pre code { padding: 0; background: none; }

blockquote {
  margin-left: 0;
  padding-left: 1.2em;
  border-left: 3px solid var(--rule);
  color: var(--muted);
}

footer {
  padding: 28px 0 8px;
  text-align: center;
  font-family: var(--font-head);
  font-size: 0.8em;
  color: var(--muted);
}

ul.blog-posts { list-style: none; padding: 0; }
ul.blog-posts li { display: flex; align-items: baseline; padding: 4px 0; }
ul.blog-posts li span { flex: 0 0 130px; }
ul.blog-posts li a { text-decoration: none; }
ul.blog-posts li a:hover { text-decoration: underline; }
ul.blog-posts li a:visited { color: var(--accent-visited); }

/* Admin: login + editor. Buttons intentionally unstyled. */
/* 16px minimum stops iOS Safari zooming in on focus. */
input, textarea {
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 6px 8px;
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.editor input:not([type=checkbox]), .editor textarea {
  display: block;
  width: 100%;
  box-sizing: border-box;
  margin-bottom: 10px;
}

.editor textarea {
  font-family: var(--font-mono);
  resize: vertical;
  /* Grow with the text where supported. */
  field-sizing: content;
  min-height: 10em;
  max-height: 70vh;
}

.editor textarea.dropping { outline: 2px dashed var(--accent); }

.upload { font-size: 0.9em; }
.upload input[type=file] { display: inline; width: auto; border: 0; padding: 0; margin: 0 0 0 4px; }
#upload-status { white-space: pre-line; }
#upload-status:empty { display: none; }

form.inline { display: inline; }

.error { color: #c0392b; }
.error:empty { display: none; }