:root {
  --bg: #f4f6f5;
  --panel: #ffffff;
  --border: #d8ded9;
  --text: #1e2a24;
  --text-dim: #5b6b62;
  --brand: #2f6f4f;
  --brand-dark: #234f39;
  --error: #b3261e;
  --flag-bg: #eaf6ee;
  --flag-border: #2f6f4f;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
}

header.site-header {
  background: var(--brand);
  color: #fff;
  padding: 1rem 1.5rem;
}
header.site-header .brand { font-weight: 700; font-size: 1.15rem; }
header.site-header nav { margin-top: 0.4rem; }
header.site-header nav a {
  color: #eaf6ee;
  text-decoration: none;
  margin-right: 1.2rem;
  font-size: 0.92rem;
}
header.site-header nav a:hover { text-decoration: underline; }

main {
  max-width: 700px;
  margin: 2rem auto;
  padding: 0 1.2rem 3rem;
}

h1 { color: var(--brand-dark); font-size: 1.6rem; }
h2 { color: var(--brand-dark); font-size: 1.15rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  margin-bottom: 1.2rem;
}

.flagbox {
  background: var(--flag-bg);
  border: 1px solid var(--flag-border);
  border-radius: 6px;
  padding: 0.9rem 1.1rem;
  margin: 1rem 0;
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.flagbox .label {
  display: block;
  font-family: var(--font);
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.25rem;
}

.error { color: var(--error); font-weight: 600; }

label { display: block; margin-bottom: 0.8rem; font-size: 0.92rem; }
input[type="text"], input[type="password"] {
  display: block;
  width: 100%;
  margin-top: 0.3rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.95rem;
}
button {
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 0.55rem 1.2rem;
  font-size: 0.95rem;
  cursor: pointer;
}
button:hover { background: var(--brand-dark); }

details {
  margin-top: 0.8rem;
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 0.6rem 0.9rem;
}
details summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--brand-dark);
}
details p { margin: 0.6rem 0 0; color: var(--text-dim); }

.muted { color: var(--text-dim); font-size: 0.9rem; }