:root {
  --bg: #0d1117; --panel: #161b22; --panel2: #1c2330; --border: #2d3646;
  --text: #e6edf3; --muted: #8b98a9; --accent: #4f8cff; --accent2: #2ea043;
  --red: #f85149; --yellow: #d29922; --green: #3fb950;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font: 14px/1.5 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
.layout { display: flex; min-height: 100vh; }

.sidebar { width: 230px; background: var(--panel); border-right: 1px solid var(--border); padding: 18px 14px; position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; }
.logo { font-size: 20px; font-weight: 700; letter-spacing: 1px; margin-bottom: 4px; }
.logo span { display: block; font-size: 11px; color: var(--muted); font-weight: 400; letter-spacing: 0; }
.sidebar nav { margin-top: 22px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-btn { text-align: left; background: none; border: none; color: var(--text); padding: 9px 12px; border-radius: 8px; cursor: pointer; font-size: 13.5px; }
.nav-btn:hover { background: var(--panel2); }
.nav-btn.active { background: var(--accent); color: #fff; }
.sidebar-foot { font-size: 11.5px; color: var(--muted); border-top: 1px solid var(--border); padding-top: 10px; }

.content { flex: 1; padding: 26px 32px; max-width: 1200px; }
.tab { display: none; }
.tab.active { display: block; }
h1 { font-size: 22px; margin-bottom: 16px; }
h2 { font-size: 16px; margin: 22px 0 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
h3 { font-size: 13px; margin: 14px 0 8px; color: var(--accent); text-transform: uppercase; letter-spacing: .5px; }
h3:first-child { margin-top: 0; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 8px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; }
.card .num { font-size: 26px; font-weight: 700; }
.card .lbl { color: var(--muted); font-size: 12px; margin-top: 2px; }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; margin-bottom: 16px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .grid2 { grid-template-columns: 1fr; } }

label { display: block; margin-bottom: 10px; font-size: 12.5px; color: var(--muted); }
label.chk { display: inline-flex; align-items: center; gap: 6px; margin: 0 14px 0 0; }
input, textarea, select { width: 100%; background: var(--bg); border: 1px solid var(--border); color: var(--text); border-radius: 7px; padding: 8px 10px; font-size: 13.5px; margin-top: 4px; font-family: inherit; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); }
.row { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.row.wrap { flex-wrap: wrap; }
.row input:not([type=checkbox]) { width: auto; flex: 1; min-width: 120px; margin-top: 0; }

.btn { background: var(--panel2); color: var(--text); border: 1px solid var(--border); padding: 8px 16px; border-radius: 8px; cursor: pointer; font-size: 13.5px; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.danger { background: transparent; border-color: var(--red); color: var(--red); padding: 4px 10px; font-size: 12px; }
.btn.sm { padding: 4px 10px; font-size: 12px; }

.tbl { width: 100%; border-collapse: collapse; margin-bottom: 14px; background: var(--panel); border-radius: 10px; overflow: hidden; }
.tbl th { text-align: left; font-size: 11.5px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; padding: 10px 12px; border-bottom: 1px solid var(--border); background: var(--panel2); }
.tbl td { padding: 9px 12px; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: top; }
.tbl tr:last-child td { border-bottom: none; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 600; }
.b-sent, .b-active, .b-ok, .b-done { background: rgba(63,185,80,.15); color: var(--green); }
.b-queued, .b-deferred, .b-sending, .b-running { background: rgba(210,153,34,.15); color: var(--yellow); }
.b-failed, .b-bounced, .b-disabled, .b-error { background: rgba(248,81,73,.15); color: var(--red); }
.b-paused, .b-draft, .b-cancelled { background: rgba(139,152,169,.15); color: var(--muted); }

.muted { color: var(--muted); font-size: 12.5px; }
.hidden { display: none !important; }
.result { background: #0a0e14; border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; margin-top: 12px; font-size: 12.5px; white-space: pre-wrap; word-break: break-all; color: #9ecbff; }
.dns-rec { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; margin-bottom: 8px; font-size: 12.5px; }
.dns-rec code { display: block; background: #0a0e14; padding: 6px 10px; border-radius: 6px; margin-top: 6px; word-break: break-all; color: #9ecbff; font-size: 12px; }
.dns-rec .ok { color: var(--green); font-weight: 700; }
.dns-rec .bad { color: var(--red); font-weight: 700; }
td.err { max-width: 380px; word-break: break-word; color: var(--muted); font-size: 12px; }
.spamguard { border-top: 1px solid var(--border); margin-top: 16px; padding-top: 4px; }
.spamguard h3 { margin-top: 10px; }