:root {
  --bg: #0f1216; --panel: #181d24; --panel2: #1f2630; --line: #2a323d;
  --ink: #e6edf3; --muted: #8b98a5; --accent: #3b82f6;
  --green: #22c55e; --amber: #f59e0b; --red: #ef4444; --grey: #6b7280;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg); color: var(--ink); }
a { color: var(--accent); text-decoration: none; }
code { background: var(--panel2); padding: 1px 5px; border-radius: 4px; font-size: 12px; }

.topbar { display: flex; align-items: center; gap: 18px; padding: 12px 20px;
  background: var(--panel); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; }
.topbar nav { display: flex; gap: 6px; flex: 1; }
.topbar nav a { padding: 6px 12px; border-radius: 7px; color: var(--muted); }
.topbar nav a.on, .topbar nav a:hover { background: var(--panel2); color: var(--ink); }
.logout button { background: none; border: 1px solid var(--line); color: var(--muted);
  padding: 6px 12px; border-radius: 7px; cursor: pointer; }

main { max-width: 1000px; margin: 0 auto; padding: 24px 20px 60px; }

.subnav { display: flex; gap: 6px; margin-bottom: 20px; border-bottom: 1px solid var(--line);
  padding-bottom: 10px; flex-wrap: wrap; }
.subnav a { padding: 6px 14px; border-radius: 7px; color: var(--muted); font-size: 14px; }
.subnav a.on, .subnav a:hover { background: var(--panel2); color: var(--ink); }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 18px 0 10px; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; margin-bottom: 16px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.empty { text-align: center; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 12px; }

.banner { padding: 10px 14px; border-radius: 10px; margin-bottom: 16px; font-size: 14px; }
.banner.ok { background: rgba(34,197,94,.12); border: 1px solid rgba(34,197,94,.4); }
.banner.bad { background: rgba(239,68,68,.12); border: 1px solid rgba(239,68,68,.4); }

.flash { padding: 10px 14px; border-radius: 10px; margin-bottom: 16px; }
.flash.ok { background: rgba(34,197,94,.14); border: 1px solid rgba(34,197,94,.4); }
.flash.error { background: rgba(239,68,68,.14); border: 1px solid rgba(239,68,68,.4); }

.device-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.dot { width: 11px; height: 11px; border-radius: 50%; background: var(--grey); display: inline-block; }
.dot.online { background: var(--green); } .dot.stale { background: var(--amber); }
.dot.offline { background: var(--red); } .dot.unknown { background: var(--grey); }
.pill { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted);
  border: 1px solid var(--line); border-radius: 20px; padding: 1px 8px; }
.pill.state-delivered { color: var(--green); } .pill.state-sent { color: var(--accent); }
.pill.state-failed { color: var(--red); } .pill.state-pending { color: var(--amber); }

table { width: 100%; border-collapse: collapse; }
table.sims { margin: 10px 0; font-size: 13px; }
table th { text-align: left; color: var(--muted); font-weight: 500; font-size: 12px;
  border-bottom: 1px solid var(--line); padding: 4px 6px; }
table td { padding: 4px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.log td { font-size: 13px; } .msgcell { max-width: 280px; }

.form label, .sim-fields label { display: block; margin-bottom: 12px; font-size: 13px; color: var(--muted); }
.form input, .form textarea, .form select,
.sim-fields input, .filters select {
  display: block; width: 100%; margin-top: 4px; padding: 8px 10px; background: var(--panel2);
  border: 1px solid var(--line); border-radius: 8px; color: var(--ink); font: inherit; }
button { font: inherit; cursor: pointer; }
button.primary { background: var(--accent); color: #fff; border: none; padding: 9px 18px; border-radius: 8px; }
button.small, .btn.small { padding: 5px 12px; font-size: 13px; }
.btn { display: inline-block; background: var(--panel2); border: 1px solid var(--line);
  border-radius: 8px; padding: 7px 14px; color: var(--ink); }
button[disabled] { opacity: .5; cursor: not-allowed; }

.filters { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.filters select { width: auto; }
.filters button { background: var(--panel2); border: 1px solid var(--line); color: var(--ink);
  padding: 8px 16px; border-radius: 8px; }

.sim-head { margin-bottom: 10px; }
.sim-fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.sim-fields label.wide { grid-column: 1 / -1; }
.row { display: flex; gap: 10px; margin-bottom: 12px; }
.row button { background: var(--panel2); border: 1px solid var(--line); color: var(--ink);
  padding: 8px 16px; border-radius: 8px; }
.result ul { margin: 6px 0 0; padding-left: 18px; } .result .err { color: var(--red); }

.login-wrap { max-width: 360px; margin: 8vh auto; }
.login-card h1 { text-align: center; }

/* SIM balance / USSD guide */
.ussd-hint { background: var(--panel2); border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 12px; margin-bottom: 12px; font-size: 13px; }
.ussd-hint .dial { font-size: 14px; color: var(--accent); }
.dial-link { display: inline-block; background: var(--accent); color: #fff; padding: 4px 12px;
  border-radius: 8px; font-size: 13px; font-weight: 600; }
.dial-link:hover { opacity: .9; }
.sim-foot { display: flex; align-items: center; gap: 12px; margin-top: 10px; }

/* SIM balance breakdown */
.balances { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; align-items: center; }
.bal-chip { background: var(--panel2); border: 1px solid var(--line); border-radius: 20px;
  padding: 3px 12px; font-size: 13px; }
.bal-chip .bal-label { color: var(--muted); font-size: 11px; text-transform: uppercase;
  letter-spacing: .03em; margin-right: 4px; }
textarea.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }

/* Fleet card inline rename */
.rename { display: flex; gap: 6px; margin: 12px 0 8px; }
.rename input { flex: 1; min-width: 0; padding: 6px 10px; background: var(--panel2);
  border: 1px solid var(--line); border-radius: 8px; color: var(--ink); font: inherit; font-size: 13px; }
.rename .btn { flex: none; }

/* Networks */
.net-fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.net-fields label { display: block; font-size: 13px; color: var(--muted); }
.net-fields label.wide { grid-column: 1 / -1; }
.net-fields input { display: block; width: 100%; margin-top: 4px; padding: 8px 10px;
  background: var(--panel2); border: 1px solid var(--line); border-radius: 8px; color: var(--ink); font: inherit; }
.net-foot { margin-top: 10px; }
.net-del { margin: -8px 0 16px; }
button.danger { background: none; border: 1px solid rgba(239,68,68,.5); color: var(--red);
  padding: 5px 12px; border-radius: 8px; }

/* SMTP grid */
.smtp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.smtp-grid label.wide { grid-column: 1 / -1; }
.smtp-grid label.chk { grid-column: 1 / -1; display: flex; align-items: center; gap: 8px;
  color: var(--ink); font-size: 14px; }
.smtp-grid label.chk input { width: auto; margin: 0; }

/* Onboard key-value + kv tables */
table.kv th { width: 130px; color: var(--muted); font-weight: 500; vertical-align: top; padding: 6px 8px 6px 0; }
table.kv td { word-break: break-all; padding: 6px 0; }
.copyable { display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.copy-btn { background: var(--panel2); border: 1px solid var(--line); color: var(--ink);
  padding: 3px 10px; border-radius: 6px; font-size: 12px; cursor: pointer; flex: none; }
.copy-btn:hover { border-color: var(--accent); }
.copy-btn.copied { color: var(--green); border-color: var(--green); }

@media (max-width: 640px) {
  .net-fields { grid-template-columns: 1fr 1fr; }
  .smtp-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .sim-fields { grid-template-columns: 1fr 1fr; }
  .topbar { flex-wrap: wrap; }
}