:root {
  --bg: #0f1419;
  --card: #1a222c;
  --border: #2a3542;
  --text: #e7eef6;
  --muted: #8b9bb0;
  --accent: #3d9cf0;
  --accent-dim: #1e4f7a;
  --good: #3ecf8e;
  --bad: #f07178;
  --warn: #e6b450;
  --radius: 12px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1a3050 0%, transparent 55%),
              radial-gradient(900px 500px at 100% 0%, #1a2838 0%, transparent 50%),
              var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: 0.9em; }

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}
.wrap.narrow { max-width: 440px; }

.hero { margin-bottom: 1.75rem; }
.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.35rem;
}
.logout-form {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0;
}
.small-btn {
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
}
.field {
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.field input[type="text"],
.field input[type="password"] {
  color: var(--text);
  background: #0c1015;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 0.85rem;
  font-size: 1rem;
}
.field input:focus {
  outline: 2px solid var(--accent-dim);
  border-color: var(--accent);
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0 0 0.5rem;
}
h1 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 650;
  margin: 0 0 0.6rem;
  letter-spacing: -0.02em;
}
h2 {
  font-size: 1.05rem;
  margin: 0 0 0.85rem;
  font-weight: 600;
}
.lede { color: var(--muted); margin: 0; max-width: 52ch; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  margin-bottom: 1rem;
}
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}
.card-head h2 { margin: 0; }

.sample {
  background: #0c1015;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: #c5d4e4;
}

.form { display: grid; gap: 1rem; }
.file {
  display: grid;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.file input[type="file"] {
  color: var(--text);
  background: #0c1015;
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 0.85rem;
}
.checks {
  border: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}
.checks label {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  font-size: 0.92rem;
  color: var(--text);
  cursor: pointer;
}
.checks input { margin-top: 0.2rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 8px;
  padding: 0.65rem 1.1rem;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { text-decoration: none; filter: brightness(1.06); }
.btn.primary {
  background: var(--accent);
  color: #041018;
  border-color: var(--accent);
}
.btn.ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
button.btn.primary { width: fit-content; }

.flash {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}
.flash li {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
}
.flash-error {
  background: rgba(240, 113, 120, 0.12);
  border: 1px solid rgba(240, 113, 120, 0.35);
  color: #ffb4b8;
}
.flash-message {
  background: rgba(61, 156, 240, 0.12);
  border: 1px solid rgba(61, 156, 240, 0.3);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.65rem;
  margin-bottom: 1rem;
}
.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 0.85rem;
  display: grid;
  gap: 0.2rem;
}
.stat-n {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.stat-l { font-size: 0.75rem; color: var(--muted); }
.stat.good .stat-n { color: var(--good); }
.stat.bad .stat-n { color: var(--bad); }
.stat.warn .stat-n { color: var(--warn); }

.downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 0.5rem;
}

.facts {
  list-style: none;
  padding: 0;
  margin: 0 0 0.85rem;
  display: grid;
  gap: 0.45rem;
}
.facts li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}
.facts span { color: var(--muted); }

.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
th, td {
  text-align: left;
  padding: 0.5rem 0.55rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th { color: var(--muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }

.tag {
  display: inline-block;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.tag-undeliverable { background: rgba(240, 113, 120, 0.15); color: var(--bad); }
.tag-risky { background: rgba(230, 180, 80, 0.15); color: var(--warn); }
.tag-accepts_mail { background: rgba(62, 207, 142, 0.15); color: var(--good); }

.foot {
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}