:root {
  --bg: #0f1420; --panel: #171e2e; --panel2: #1d2639; --line: #2a3550;
  --text: #dce3f2; --muted: #8b97b3; --accent: #4f8cff; --accent2: #7aa5ff;
  --ok: #3ecf8e; --warn: #f5b544; --err: #f4646c;
  --radius: 12px; --font: system-ui, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: var(--font); font-size: 15px; }
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }

.layout { display: flex; min-height: 100vh; }
.sidebar { width: 230px; flex-shrink: 0; background: var(--panel); border-right: 1px solid var(--line);
  display: flex; flex-direction: column; padding: 18px 14px; position: sticky; top: 0; height: 100vh; }
.brand { display: flex; gap: 10px; align-items: center; padding: 4px 8px 18px; border-bottom: 1px solid var(--line); }
.brand-icon { font-size: 26px; }
.brand b { font-size: 15px; display: block; }
.brand small { color: var(--muted); font-size: 11px; }
.sidebar nav { display: flex; flex-direction: column; gap: 4px; margin-top: 16px; flex: 1; }
.sidebar nav a { padding: 9px 12px; border-radius: 8px; color: var(--text); font-size: 14px; }
.sidebar nav a:hover { background: var(--panel2); text-decoration: none; }
.sidebar nav a.active { background: var(--accent); color: #fff; }
.sidebar-foot { border-top: 1px solid var(--line); padding-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.linklike { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 13px; text-align: left; padding: 0; }
.linklike:hover { color: var(--text); }

.content { flex: 1; padding: 28px 34px; max-width: 1200px; }
h1 { font-size: 22px; margin-bottom: 4px; }
h2 { font-size: 16px; margin: 22px 0 10px; }
.sub { color: var(--muted); margin-bottom: 22px; font-size: 14px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 22px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.card .num { font-size: 28px; font-weight: 700; }
.card .lbl { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; margin-top: 2px; }
.card.ok .num { color: var(--ok); } .card.warn .num { color: var(--warn); } .card.err .num { color: var(--err); }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 20px; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th { text-align: left; color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase;
  letter-spacing: .05em; padding: 8px 10px; border-bottom: 1px solid var(--line); }
td { padding: 8px 10px; border-bottom: 1px solid rgba(42,53,80,.5); vertical-align: top; }
tr:last-child td { border-bottom: none; }
.mono { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 12.5px; }
.wrap { word-break: break-all; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11.5px; font-weight: 600; }
.badge.ok { background: rgba(62,207,142,.15); color: var(--ok); }
.badge.warn { background: rgba(245,181,68,.15); color: var(--warn); }
.badge.err { background: rgba(244,100,108,.15); color: var(--err); }
.badge.mut { background: var(--panel2); color: var(--muted); }

button, .btn { background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: 9px 16px; font-size: 14px; cursor: pointer; font-family: var(--font); }
button:hover, .btn:hover { background: var(--accent2); text-decoration: none; }
button.danger { background: transparent; color: var(--err); border: 1px solid var(--err); padding: 5px 12px; font-size: 12.5px; }
button.danger:hover { background: rgba(244,100,108,.12); }
button.ghost { background: transparent; color: var(--accent2); border: 1px solid var(--accent); }
button.ghost:hover { background: rgba(79,140,255,.1); }

input[type=text], input[type=password], input[type=email], select {
  background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px;
  padding: 9px 12px; font-size: 14px; font-family: var(--font); width: 100%; }
input:focus, select:focus { outline: none; border-color: var(--accent); }
label { font-size: 13px; color: var(--muted); display: block; margin: 10px 0 4px; }
.formrow { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.formrow > div { flex: 1; min-width: 150px; }
.formrow button { flex-shrink: 0; }

.flash { padding: 11px 16px; border-radius: 10px; margin-bottom: 16px; font-size: 14px; }
.flash.ok { background: rgba(62,207,142,.12); border: 1px solid rgba(62,207,142,.4); color: var(--ok); }
.flash.error { background: rgba(244,100,108,.12); border: 1px solid rgba(244,100,108,.4); color: var(--err); }

.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-box { width: 380px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 16px; padding: 34px; }
.login-box h1 { text-align: center; margin-bottom: 2px; }
.login-box .sub { text-align: center; }
.login-box button { width: 100%; margin-top: 18px; padding: 11px; }

.dnsrec { background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin-bottom: 12px; }
.dnsrec .host { color: var(--accent2); font-weight: 600; }
.dnsrec .val { display: block; background: var(--panel2); border-radius: 6px; padding: 8px 10px; margin: 6px 0; white-space: pre-wrap; overflow-x: auto; }
.dnsrec small { color: var(--muted); }

.bars { display: flex; gap: 8px; align-items: flex-end; height: 90px; margin: 8px 0 4px; }
.bar { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; gap: 4px; }
.bar .fill { width: 70%; background: var(--accent); border-radius: 4px 4px 0 0; min-height: 2px; }
.bar small { color: var(--muted); font-size: 10.5px; }
.bar .cnt { font-size: 11px; color: var(--text); }

.status-sent { color: var(--ok); } .status-bounced { color: var(--err); } .status-deferred { color: var(--warn); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ------------------------------------------------------------- mobile */
.topbar { display: none; }
.backdrop { display: none; }
.hamburger { background: none; border: 1px solid var(--line); border-radius: 8px;
  color: var(--text); font-size: 20px; padding: 4px 12px; line-height: 1; }
.hamburger:hover { background: var(--panel2); }

@media (max-width: 900px) {
  .grid2 { grid-template-columns: 1fr; }

  .topbar { display: flex; align-items: center; gap: 12px; position: sticky; top: 0; z-index: 40;
    background: var(--panel); border-bottom: 1px solid var(--line); padding: 10px 14px; }
  .topbar b { font-size: 16px; }

  .sidebar { position: fixed; top: 0; left: 0; height: 100vh; height: 100dvh; z-index: 60;
    transform: translateX(-105%); transition: transform .22s ease; box-shadow: 4px 0 24px rgba(0,0,0,.5);
    width: min(280px, 84vw); overflow-y: auto; }
  body.nav-open .sidebar { transform: translateX(0); }
  body.nav-open .backdrop { display: block; position: fixed; inset: 0; z-index: 50;
    background: rgba(0,0,0,.55); }

  .content { padding: 16px 14px; max-width: 100%; }
  h1 { font-size: 19px; }
  .cards { grid-template-columns: repeat(auto-fit, minmax(105px, 1fr)); gap: 10px; }
  .card { padding: 12px 14px; }
  .card .num { font-size: 22px; }
  .panel { padding: 14px 14px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  table { min-width: 480px; }
  .login-box { width: min(380px, 92vw); padding: 26px 22px; }
  .formrow > div { min-width: 100%; }
  .formrow button { width: 100%; }
  button, .btn { padding: 11px 16px; }  /* target touch più comodi */
  input[type=text], input[type=password], input[type=email], select { padding: 11px 12px; }
  .dnsrec .val { font-size: 11.5px; }
}