:root {
  --bg: #edf2f4;
  --border: #e3e8eb;
  --panel-bg: color-mix(in srgb, var(--bg) 75%, var(--border));
  --ink: #1e2c32;
  --ink-muted: color-mix(in srgb, var(--ink) 50%, var(--bg));
}

* {
  box-sizing: border-box;
}

body {
  margin: 10px;
  font-family: Arial, sans-serif;
  font-size: 14px;
  color: var(--ink);
  background: var(--bg);
}

h1, h2, .nav-link {
  margin: 0;
  font-family: Georgia, serif;
  font-weight: 400;
}
h1 { 
  font-size: 28px; 
  text-decoration: underline;
}
h2, .nav-link { font-size: 14px; }

.stack {
  display: grid;
  gap: 10px;
}

.header {
  margin: 0 5px 10px;
}

.nav-link { 
  color: var(--ink-muted); 
  text-decoration: none;
}

.nav-link--active {
  color: var(--ink);
  text-decoration: underline;
}

.panel {
  max-width: 60ch;
  padding: 10px;
  border: 5px solid var(--border);
  background: var(--panel-bg);
}
.panel > :first-child { margin-top: 0; }
.panel > :last-child { margin-bottom: 0; }

blockquote cite {
  display: block;
  text-align: right;
  color: var(--ink-muted);
} 

.ink-muted { color: var(--ink-muted); }

.button, button {
  margin-top: 5px;
  display: inline-block;
  padding: 5px;
  border: 1px solid var(--border);

  font: inherit;
  color: inherit;
  text-decoration: none;

  background: transparent;
  cursor: pointer;

  box-shadow:
    inset 0 0 2px rgba(0, 0, 0, 0.25),
    1px 1px 0 rgba(0, 0, 0, 0.5);
}
.button:active, button:active {
  transform: translate(1px, 1px);
  box-shadow:
    inset 0 0 2px rgba(0, 0, 0, 0.125);
}
.stack > .button, .stack > button { margin-top: 0; }

.form input, .form select, .form textarea {
  width: 100%;
  padding: 5px;
  border: 2px solid var(--border);

  font: inherit;
  background: #fff;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; }

.form select {
  appearance: none;
  border-radius: 0;
}
.form select:has(option:disabled:checked) { color: var(--ink-muted); }

.form textarea {
  min-height: 100px;
  resize: none;
}

.honeypot {
  position: absolute;
  left: -9999px;
}