:root{
  --bg:#0f1115; --panel:#171a21; --panel2:#1e222b; --line:#2a2f3a;
  --text:#e7e9ee; --muted:#9aa3b2; --brand:#5b8cff; --brand-d:#4072f0;
  --green:#3fb950; --red:#f85149; --amber:#d29922; --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:22px;margin:0 0 4px}
h2{font-size:16px;margin:0 0 12px}
.muted{color:var(--muted)}

/* Layout */
.layout{display:flex;min-height:100vh}
.sidebar{width:230px;background:var(--panel);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:16px 12px;position:sticky;top:0;height:100vh}
.brand{font-size:18px;font-weight:700;padding:8px 10px 18px}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:8px;
  color:var(--text);margin-bottom:2px}
.nav-item:hover{background:var(--panel2);text-decoration:none}
.nav-item.active{background:var(--brand);color:#fff}
.nav-item .ic{width:18px;text-align:center}
.logout{margin-top:auto}
.logout button{width:100%;background:transparent;border:1px solid var(--line);color:var(--muted);
  padding:8px;border-radius:8px;cursor:pointer}
.logout button:hover{color:var(--text);border-color:var(--muted)}
.content{flex:1;padding:28px 32px;max-width:1100px}

/* Cards */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;margin-bottom:20px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:20px}
.card.stat{text-align:center;padding:18px}
.stat-num{font-size:30px;font-weight:700}
.stat-label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em}

.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}

/* Buttons */
.btn{display:inline-block;padding:9px 16px;border-radius:8px;border:1px solid var(--line);
  background:var(--panel2);color:var(--text);cursor:pointer;font-size:14px;margin-right:8px}
.btn:hover{border-color:var(--muted);text-decoration:none}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d)}
.btn-danger{background:transparent;border-color:var(--red);color:var(--red)}
.btn-danger:hover{background:var(--red);color:#fff}
.btn-block{display:block;width:100%;text-align:center;margin:8px 0 0}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* Forms */
label{display:block;margin-bottom:14px;font-weight:600}
input[type=text],input[type=email],input[type=password],input[type=number],select,textarea{
  width:100%;margin-top:6px;padding:10px 12px;background:var(--panel2);border:1px solid var(--line);
  border-radius:8px;color:var(--text);font-size:14px;font-weight:400}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand)}
.row{display:flex;gap:16px}
.row > *{flex:1}
.help{font-weight:400;color:var(--muted);font-size:12px;margin-top:4px}

/* Tables */
.table{width:100%;border-collapse:collapse}
.table th,.table td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
.table th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.03em}
.table tbody tr:hover{background:var(--panel2)}

/* Badges */
.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;
  background:var(--panel2);border:1px solid var(--line);color:var(--muted)}
.badge-sent,.badge-delivered,.badge-subscribed{color:var(--green);border-color:var(--green)}
.badge-sending,.badge-previewed,.badge-queued{color:var(--amber);border-color:var(--amber)}
.badge-failed,.badge-bounced,.badge-complained,.badge-unsubscribed{color:var(--red);border-color:var(--red)}

/* Flash */
.flash{padding:11px 14px;border-radius:8px;margin-bottom:16px;border:1px solid}
.flash-success{background:rgba(63,185,80,.12);border-color:var(--green);color:#7ee787}
.flash-error{background:rgba(248,81,73,.12);border-color:var(--red);color:#ff7b72}
.flash-info{background:rgba(91,140,255,.12);border-color:var(--brand);color:#a5c0ff}

/* Login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:32px;width:100%;max-width:360px}
.login-brand{font-size:24px;font-weight:700;text-align:center}
.login-sub{text-align:center;color:var(--muted);margin:4px 0 22px}

/* Misc */
code{background:var(--panel2);padding:2px 6px;border-radius:5px;font-size:13px}
.token-box{background:var(--panel2);border:1px solid var(--amber);padding:12px;border-radius:8px;
  word-break:break-all;font-family:monospace;margin:10px 0}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:820px){.grid-2{grid-template-columns:1fr}.sidebar{width:60px}.nav-item span:not(.ic){display:none}.brand{font-size:0}}