:root{
  --bg:#f4f6f8; --panel:#fff; --ink:#1c2733; --muted:#6b7885;
  --line:#e2e8ef; --brand:#12507e; --brand2:#1a6fb0;
  --ok:#127a3e; --okbg:#e6f4ec; --bad:#b3261e; --badbg:#fbe9e7; --warn:#b7791f;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.5}
a{color:var(--brand2);text-decoration:none}
a:hover{text-decoration:underline}

.topbar{background:var(--brand);color:#fff;display:flex;align-items:center;
  justify-content:space-between;padding:0 20px;flex-wrap:wrap}
.brand{font-weight:700;font-size:18px;padding:14px 0}
.brand span{font-weight:400;opacity:.8}
.topbar nav{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.topbar nav a{color:#dbe8f3;padding:14px 12px;font-size:14px;border-radius:6px}
.topbar nav a:hover{background:rgba(255,255,255,.1);text-decoration:none}
.topbar nav a.active{background:var(--brand2);color:#fff}
.logout{margin-left:8px}
.logout button{background:transparent;border:1px solid rgba(255,255,255,.4);color:#fff;
  padding:6px 12px;border-radius:6px;cursor:pointer;font-size:13px}

.welcome{background:linear-gradient(90deg,#0e3f63,#1a6fb0);color:#eaf3fa;
  text-align:center;padding:9px 20px;font-size:14px}
.welcome .wg{font-weight:600;color:#fff}
.welcome strong{color:#fff}

.wrap{max-width:1000px;margin:24px auto;padding:0 20px}
h1{font-size:24px;margin:0 0 16px}
h2{font-size:17px;margin:0 0 12px}
.muted{color:var(--muted)}
.small{font-size:12px}
.hint{color:var(--muted);font-size:13px;margin-top:10px}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-bottom:20px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px;text-align:center}
.card .num{font-size:28px;font-weight:700;color:var(--brand)}
.card .lbl{color:var(--muted);font-size:13px}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:20px;margin-bottom:18px}

label{display:block;margin:0 0 14px;font-size:14px;font-weight:600}
label.check,label.check *{font-weight:400}
input[type=text],input[type=email],input[type=password],input[type=number],select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;
  font-size:15px;font-family:inherit;margin-top:5px;background:#fff}
textarea{resize:vertical}
.row{display:flex;gap:14px;flex-wrap:wrap;align-items:end}
.row>label{flex:1;min-width:140px}
.inline{display:inline-flex;gap:8px;align-items:center;flex-wrap:wrap}
.inline input,.inline select{margin-top:0;width:auto}
.right{float:right}

.btn{display:inline-block;background:#eef2f6;color:var(--ink);border:1px solid var(--line);
  padding:10px 16px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:600}
.btn:hover{text-decoration:none;filter:brightness(.97)}
.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn.warn{background:#fff5e6;color:var(--warn);border-color:#f0d9a8}
.btn.danger{background:var(--badbg);color:var(--bad);border-color:#f3c9c4}
.btn.block{width:100%}
.btn.big{padding:14px 24px;font-size:16px}
.linkbtn{background:none;border:none;color:var(--bad);cursor:pointer;font-size:13px;padding:0}

table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}
.actions a,.actions form{display:inline}
.bulkbar{display:flex;gap:10px;align-items:center;margin-bottom:12px;flex-wrap:wrap}

.pill{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;background:#eef2f6;color:var(--muted)}
.pill.ok{background:var(--okbg);color:var(--ok)}
.pill.bad{background:var(--badbg);color:var(--bad)}
.status-sending{color:var(--ok)} .status-paused{color:var(--warn)} .status-idle{color:var(--muted)}

.flash{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:14px}
.flash.ok{background:var(--okbg);color:var(--ok)}
.flash.error{background:var(--badbg);color:var(--bad)}

.login-card{max-width:380px;margin:8vh auto;background:var(--panel);border:1px solid var(--line);
  border-radius:12px;padding:32px}
.login-card h1{font-size:20px;margin-bottom:4px}

.footer-preview,pre{background:#f7f9fb;border:1px solid var(--line);border-radius:8px;
  padding:12px;font-size:12px;white-space:pre-wrap;color:var(--muted)}
.stats-list{list-style:none;padding:0} .stats-list li{padding:4px 0;border-bottom:1px solid var(--line)}
.sendstate{margin-bottom:14px;font-size:15px}
details summary{cursor:pointer;color:var(--muted);font-size:13px;margin-top:8px}
hr{border:none;border-top:1px solid var(--line);margin:18px 0}

.spinner{display:inline-block;width:16px;height:16px;border:3px solid var(--line);
  border-top-color:var(--brand);border-radius:50%;animation:spin 1s linear infinite;vertical-align:middle}
@keyframes spin{to{transform:rotate(360deg)}}

/* Help page */
.toc{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:6px}
.toc a{padding:8px 10px;border-radius:6px;background:#f2f6fa;font-size:14px}
.toc a:hover{background:#e6eef5;text-decoration:none}
ol.help,ul.help{margin:8px 0;padding-left:22px}
ol.help li,ul.help li{margin:7px 0}
.tip{background:#eef6ff;border-left:4px solid var(--brand2);padding:10px 14px;border-radius:6px;
  font-size:14px;margin-top:12px;color:#234}
[id]{scroll-margin-top:16px}

/* Alerts */
.alert-banner{display:flex;justify-content:space-between;align-items:center;gap:16px;
  background:var(--badbg);border:1px solid #f3c9c4;border-left:5px solid var(--bad);
  color:var(--bad);padding:16px 18px;border-radius:10px;margin-bottom:18px}
.alert-banner .msg{color:#7a1a15;font-size:14px;margin-top:4px;font-weight:400}
.alert-banner .when{font-size:12px;margin-top:4px}
.navalert{background:#fff;color:var(--bad)!important;font-weight:700;border-radius:6px;
  padding:8px 12px!important;margin-left:6px}