:root {
  --bg: #0b0f17;
  --bg2: #111826;
  --card: #141c2b;
  --line: #233047;
  --txt: #e6edf7;
  --dim: #8899b3;
  --acc: #2f81f7;
  --acc2: #1a5fc0;
  --ok: #2ea043;
  --warn: #d29922;
  --bad: #f85149;
  --radius: 12px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--txt);
  font: 14px/1.5 -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  min-height: 100vh;
}
a { color: var(--acc); text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }

/* ---------- login ---------- */
#login {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 20px;
}
#login .box {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 28px 24px; width: 100%; max-width: 340px; text-align: center;
}
#login h1 { margin: 0 0 4px; font-size: 22px; letter-spacing: 2px; }
#login p { color: var(--dim); margin: 0 0 20px; font-size: 12px; }
#login input {
  width: 100%; padding: 14px; text-align: center; letter-spacing: 6px; font-size: 20px;
  background: var(--bg2); border: 1px solid var(--line); border-radius: 10px; margin-bottom: 12px;
}

/* ---------- shell ---------- */
header {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; background: rgba(11,15,23,.92);
  border-bottom: 1px solid var(--line); backdrop-filter: blur(8px);
}
header .brand { font-weight: 700; letter-spacing: 2px; font-size: 15px; }
header .grow { flex: 1; }
header .pill {
  font-size: 11px; padding: 4px 9px; border-radius: 99px;
  border: 1px solid var(--line); background: var(--bg2); color: var(--dim);
}
nav {
  display: flex; gap: 4px; overflow-x: auto; padding: 8px 10px;
  border-bottom: 1px solid var(--line); background: var(--bg2);
  position: sticky; top: 45px; z-index: 29; scrollbar-width: none;
}
nav::-webkit-scrollbar { display: none; }
nav button {
  white-space: nowrap; background: transparent; border: 1px solid transparent;
  color: var(--dim); padding: 7px 13px; border-radius: 99px; cursor: pointer;
}
nav button.on { background: var(--acc); border-color: var(--acc); color: #fff; }
main { padding: 14px; max-width: 1100px; margin: 0 auto 60px; }
.page { display: none; }
.page.on { display: block; }

/* ---------- bits ---------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px; margin-bottom: 14px;
}
.card h2 { margin: 0 0 12px; font-size: 14px; color: var(--txt); }
.card h2 small { color: var(--dim); font-weight: 400; margin-left: 6px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.row > * { flex: 1 1 160px; min-width: 0; }
label { display: block; font-size: 11px; color: var(--dim); margin: 0 0 4px; text-transform: uppercase; letter-spacing: .5px; }
input, select, textarea {
  width: 100%; padding: 10px; background: var(--bg2);
  border: 1px solid var(--line); border-radius: 9px;
}
textarea { resize: vertical; min-height: 90px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }
.field { margin-bottom: 12px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 16px; border-radius: 9px; border: 1px solid var(--line);
  background: var(--bg2); cursor: pointer;
}
.btn:hover { border-color: var(--acc); }
.btn.primary { background: var(--acc); border-color: var(--acc); color: #fff; font-weight: 600; }
.btn.danger { border-color: #5c2626; color: #ff9a92; }
.btn.sm { padding: 5px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(135px, 1fr)); gap: 10px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 13px; }
.stat b { display: block; font-size: 24px; line-height: 1.2; }
.stat span { font-size: 11px; color: var(--dim); text-transform: uppercase; letter-spacing: .6px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 9px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--dim); font-size: 11px; text-transform: uppercase; letter-spacing: .5px; font-weight: 600; }
tr:hover td { background: rgba(47,129,247,.05); }
.tblwrap { overflow-x: auto; margin: 0 -14px; padding: 0 14px; }
.tag {
  display: inline-block; padding: 2px 8px; border-radius: 99px;
  font-size: 11px; border: 1px solid var(--line);
}
.t-queued    { color: var(--dim); }
.t-sending   { color: var(--acc); border-color: var(--acc); }
.t-sent      { color: var(--ok); border-color: #1b4d2a; }
.t-delivered { color: #58e08a; border-color: #1b4d2a; background: rgba(46,160,67,.12); }
.t-failed    { color: var(--bad); border-color: #5c2626; }
.t-cancelled { color: var(--dim); text-decoration: line-through; }
.t-running   { color: var(--ok); border-color: #1b4d2a; }
.t-paused    { color: var(--warn); border-color: #5c4a1b; }
.t-draft     { color: var(--dim); }
.t-done      { color: var(--acc); border-color: var(--acc2); }
.t-online    { color: var(--ok); border-color: #1b4d2a; }
.t-offline   { color: var(--bad); border-color: #5c2626; }
.muted { color: var(--dim); font-size: 12px; }
.mono { font-family: ui-monospace, Menlo, Consolas, monospace; }
.bar { height: 7px; background: var(--bg2); border-radius: 99px; overflow: hidden; margin-top: 6px; }
.bar i { display: block; height: 100%; background: var(--ok); }
.hint {
  background: rgba(47,129,247,.08); border: 1px solid var(--acc2);
  border-radius: 9px; padding: 10px 12px; font-size: 12px; color: #bcd4f5; margin-bottom: 12px;
}
.seg { border: 1px dashed var(--line); border-radius: 10px; padding: 11px; margin-bottom: 10px; }
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: #1d2739; border: 1px solid var(--line); color: var(--txt);
  padding: 11px 18px; border-radius: 10px; z-index: 100; max-width: 92vw;
  box-shadow: 0 8px 30px rgba(0,0,0,.5);
}
.toast.bad { border-color: #5c2626; }
.toast.ok  { border-color: #1b4d2a; }
.code {
  font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 26px;
  letter-spacing: 8px; background: var(--bg2); border: 1px dashed var(--acc);
  border-radius: 10px; padding: 14px; text-align: center; margin: 10px 0;
}
.flex { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.right { margin-left: auto; }

/* ---------- status pill in the header ---------- */
header .pill.good { color: #58e08a; border-color: #1b4d2a; background: rgba(46,160,67,.12); }
header .pill.bad  { color: #ff9a92; border-color: #5c2626; background: rgba(248,81,73,.1); }

/* ---------- "why is nothing sending?" banner ---------- */
#banner { max-width: 1100px; margin: 12px auto 0; padding: 0 14px; }
.note {
  display: flex; flex-direction: column; gap: 4px;
  border: 1px solid var(--line); border-left-width: 4px;
  border-radius: 10px; padding: 11px 13px; margin-bottom: 8px;
  background: var(--card); font-size: 13px;
}
.note b { font-size: 13px; }
.note span { color: var(--dim); font-size: 12.5px; line-height: 1.55; }
.note .btn { align-self: flex-start; margin-top: 4px; }
.note.bad  { border-left-color: var(--bad);  background: rgba(248,81,73,.07); }
.note.bad b { color: #ff9a92; }
.note.warn { border-left-color: var(--warn); background: rgba(210,153,34,.07); }
.note.warn b { color: #f0c05a; }
.note.ok   { border-left-color: var(--ok);   background: rgba(46,160,67,.07); }

/* ---------- pairing steps + small code box ---------- */
.steps { padding-left: 20px; line-height: 1.85; color: var(--dim); font-size: 13px; margin: 0 0 4px; }
.steps li { margin-bottom: 3px; }
.steps b { color: var(--txt); }
.code.sm {
  font-size: 14px; letter-spacing: 0; padding: 9px 11px; margin: 6px 0 2px;
  border-style: solid; border-color: var(--line); text-align: left; word-break: break-all;
}
.red   { color: #ff9a92; }
.amber { color: #f0c05a; }

.field.check { display: flex; align-items: center; gap: 8px; }
.field.check input { width: auto; margin: 0; }
.field.check label {
  margin: 0; text-transform: none; letter-spacing: 0;
  font-size: 12.5px; color: var(--dim); cursor: pointer;
}
@media (max-width: 560px) {
  main { padding: 10px; }
  .card { padding: 12px; }
  td, th { padding: 7px 6px; }
}