:root {
  --bg: #efe6d6;
  --ink: #1c1712;
  --muted: #5e564c;
  --card: #fffaf2;
  --line: #ddcbb4;
  --accent: #8c2f1b;
  --accent-ink: #fff7f2;
  --ok: #1d5c38;
  --warn: #8a5a12;
  --bad: #8c2f1b;
  --shadow: 0 1px 0 rgba(28, 23, 18, 0.06);
  color-scheme: light;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(140, 47, 27, 0.08), transparent 28rem),
    var(--bg);
  color: var(--ink);
  font: 16px/1.5 "Segoe UI", system-ui, sans-serif;
}

a { color: var(--accent); }

.top {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 242, 0.92);
}

.brand {
  color: var(--ink);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand-sub {
  margin: 0;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 0.82rem;
}

.nav {
  display: flex;
  gap: 0.75rem;
  margin-left: auto;
}

.nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 0.2rem 0.1rem;
  border-bottom: 2px solid transparent;
}

.nav a[aria-current="page"] { border-color: var(--accent); }

.logout { margin: 0; }

main {
  width: min(960px, calc(100% - 2rem));
  margin: 1.5rem auto 2rem;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 1.25rem 1.35rem 1.5rem;
}

.narrow { width: min(100%, 28rem); margin: 2rem auto; }

h1, h2 { line-height: 1.2; letter-spacing: -0.02em; }

h1 { margin: 0 0 0.4rem; font-size: 1.7rem; }

h2 { margin: 0; font-size: 1.05rem; }

.lede, .limits, .note { color: var(--muted); }

.limits { margin-top: 0; }

.stack, .case, .run dl { display: grid; gap: 0.75rem; }

label, legend { font-weight: 600; }

input, select, button {
  font: inherit;
  color: inherit;
}

input, select {
  display: block;
  width: 100%;
  margin-top: 0.3rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

button {
  border: 1px solid var(--line);
  background: white;
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  justify-self: start;
}

button:disabled { opacity: 0.55; cursor: not-allowed; }

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

.cases { display: grid; gap: 0.7rem; }

.case {
  padding: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.case:has(input:checked) {
  border-color: var(--accent);
  box-shadow: inset 3px 0 0 var(--accent);
}

.case.danger { background: #fff6f2; }

.case-id { font-weight: 700; }

.description { color: var(--ink); font-weight: 400; }

.mono, .record {
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 0.86rem;
  overflow-wrap: anywhere;
}

.pill {
  display: inline-block;
  width: fit-content;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: #f3eadc;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 600;
}

.pill.bad, .status-bounced, .status-smtp_error, .status-expired {
  background: #f8d7cc;
  color: var(--bad);
}

.status-sent { background: #d7efdf; color: var(--ok); }

.status-deferred, .banner.warn { background: #f8e7c4; color: var(--warn); }

.status-queued, .status-submitting { background: #ece7df; color: var(--muted); }

.banner {
  padding: 0.7rem 0.8rem;
  border-radius: 10px;
}

.banner.bad { background: #f8d7cc; color: var(--bad); }

.section-head, .inline-form, .recipient-list li, .run header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
  align-items: center;
  justify-content: space-between;
}

.inline-form label { flex: 1 1 16rem; }

.run {
  margin-top: 0.8rem;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.run.highlight { border-color: var(--accent); }

.run dl { margin: 0.8rem 0 0; }

.run dt { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }

.run dd { margin: 0.1rem 0 0; }

.recipient-list { list-style: none; padding: 0; margin: 1rem 0 0; }

.recipient-list li { padding: 0.45rem 0; border-top: 1px solid var(--line); }

.dns-group { margin-top: 1.4rem; }

.dns-records { display: grid; gap: 0.8rem; margin: 0.4rem 0 0; }

.dns-records dt { font-weight: 600; }

.dns-records dd { margin: 0.25rem 0 0; display: grid; gap: 0.25rem; }

.record {
  display: block;
  padding: 0.45rem 0.55rem;
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--line);
}

footer {
  width: min(960px, calc(100% - 2rem));
  margin: 0 auto 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

footer p { margin: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (max-width: 640px) {
  .nav { margin-left: 0; }
  .section-head { align-items: flex-start; }
}