/* scheme-reports.org — Mail archive overlay
   Applied to MHonArc-generated pages without altering their HTML */

/* ── Color tokens (matching main site) ── */
:root {
  --bg: #ffffff;
  --bg-subtle: #f5f6f8;
  --bg-code: #f0f2f4;
  --text: #1a1a1a;
  --text-secondary: #555;
  --border: #d0d4d8;
  --link: #1a5ca0;
  --link-visited: #5b3a8c;
  --link-hover: #0e3d6b;
  --accent: #2a6db5;
  --header-bg: #2b2d42;
  --header-text: #f1f1f1;
  --nav-bg: #f5f6f8;
  --nav-hover: #e2e5ea;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1b26;
    --bg-subtle: #222337;
    --bg-code: #272838;
    --text: #d8dae0;
    --text-secondary: #999;
    --border: #3a3c50;
    --link: #6eb0e6;
    --link-visited: #b89ee6;
    --link-hover: #9ccbf5;
    --accent: #6eb0e6;
    --header-bg: #151621;
    --header-text: #d8dae0;
    --nav-bg: #222337;
    --nav-hover: #2e3048;
  }
}

/* ── Base ── */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  margin: 0;
  padding: 0;
}

/* ── Site banner (injected from banner.html) ── */
.site-header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 1.5rem 2rem;
}

.site-header h1 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.site-header h1 a {
  color: var(--header-text);
  text-decoration: none;
}

.site-header .subtitle {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  opacity: 0.75;
  font-weight: 400;
}

.site-nav {
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}

.site-nav li a {
  display: block;
  padding: 0.6rem 1rem;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 2px solid transparent;
  transition: background 0.15s, border-color 0.15s;
}

.site-nav li a:hover {
  background: var(--nav-hover);
  border-bottom-color: var(--accent);
}

.site-nav li a.active {
  border-bottom-color: var(--accent);
  font-weight: 600;
}

/* ── Mail navigation (Date Prev/Next, Thread Prev/Next) ── */
.mail-nav {
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  max-width: none;
}

.mail-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}

.mail-nav li a {
  display: block;
  padding: 0.4rem 0.8rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.82rem;
}

.mail-nav li a:hover {
  background: var(--nav-hover);
  color: var(--text);
}

.mail-nav .disabled {
  display: block;
  padding: 0.4rem 0.8rem;
  color: var(--border);
  font-size: 0.82rem;
}

/* ── Mail content area ── */
.mail-nav ~ * {
  max-width: 52rem;
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

/* ── Links ── */
a { color: var(--link); }
a:visited { color: var(--link-visited); }
a:hover { color: var(--link-hover); }

/* ── Message subject heading ── */
h1 {
  font-size: 1.4rem;
  line-height: 1.3;
  margin: 0.5rem 0;
  color: var(--text);
}

/* ── Horizontal rules (used as separators) ── */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1rem 0;
}

/* ── Navigation bar (Date Prev/Next, Thread Prev/Next) ── */
.site-nav + hr { margin-top: 0; }

/* ── Message metadata (To, From, Subject, Date) ── */
ul {
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.2rem;
}

/* ── Message body ── */
pre {
  background: var(--bg-subtle);
  padding: 1rem 1.2rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.9rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-x: auto;
}

/* ── References / follow-ups sections ── */
strong { font-weight: 600; }

em { color: var(--text-secondary); }

/* ── Index pages (maillist.html, threads.html) ── */
h2 {
  font-size: 1.2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.3rem;
  margin-top: 1.5rem;
}

/* ── Responsive ── */
@media (max-width: 640px) {
  body { overflow-wrap: break-word; word-break: break-word; }

  .site-header { padding: 1rem; }
  .site-header h1 { font-size: 1.3rem; }

  .site-nav { padding: 0; }
  .site-nav ul { flex-wrap: wrap; }
  .site-nav li { flex: 1 1 auto; text-align: center; }
  .site-nav li a { padding: 0.65rem 0.5rem; font-size: 0.85rem; }

  .site-nav ~ * { padding-left: 1rem; padding-right: 1rem; }

  .mail-nav { padding: 0; }
  .mail-nav li { flex: 1 1 auto; text-align: center; }
  .mail-nav li a, .mail-nav .disabled { padding: 0.4rem 0.3rem; font-size: 0.78rem; }

  h1 { font-size: 1.2rem; }
  pre { padding: 0.8rem; font-size: 0.85rem; }
  ul { padding-left: 1rem; }
}