:root {
  --bg: #0d1117; --panel: #161b22; --panel2: #1c2330; --border: #2d333b;
  --text: #e6edf3; --muted: #8b949e; --accent: #4c8dff; --accent2: #2f81f7;
  --green: #3fb950; --red: #f85149; --amber: #d29922;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }
header { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; border-bottom: 1px solid var(--border); background: var(--panel); position: sticky; top: 0; z-index: 10; }
.brand { font-weight: 600; font-size: 16px; display: flex; align-items: center; gap: 8px; }
.brand .sub { color: var(--muted); font-weight: 400; font-size: 12px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); display: inline-block; }
.dot.on { background: var(--green); box-shadow: 0 0 8px var(--green); }
.dot.err { background: var(--red); }
.actions { display: flex; gap: 8px; }
main { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 20px; max-width: 1200px; margin: 0 auto; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.card h2 { margin: 0 0 14px; font-size: 13px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }
.card.full { grid-column: 1 / -1; }
label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }
input, select, textarea { width: 100%; background: var(--panel2); border: 1px solid var(--border); color: var(--text); border-radius: 6px; padding: 8px 10px; font-size: 13px; font-family: inherit; }
textarea { resize: vertical; min-height: 180px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.row { display: flex; gap: 10px; align-items: flex-end; margin-top: 8px; }
.row.two > div { flex: 1; }
button { border: 1px solid var(--border); background: var(--panel2); color: var(--text); padding: 8px 14px; border-radius: 6px; cursor: pointer; font-size: 13px; }
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent2); border-color: var(--accent2); color: #fff; font-weight: 600; }
button.ghost { background: transparent; }
.toggleRow { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border); }
.switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; inset: 0; background: var(--border); border-radius: 24px; transition: .2s; }
.slider:before { content: ""; position: absolute; height: 18px; width: 18px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: .2s; }
.switch input:checked + .slider { background: var(--green); }
.switch input:checked + .slider:before { transform: translateX(20px); }
.hint { color: var(--muted); font-size: 12px; margin-top: 8px; }
.hint code { background: var(--panel2); padding: 1px 5px; border-radius: 4px; }
.vars { margin-top: 12px; }
.varsLabel { color: var(--muted); font-size: 12px; margin-right: 8px; }
.chip { display: inline-block; background: var(--panel2); border: 1px solid var(--border); color: var(--accent); border-radius: 20px; padding: 3px 10px; margin: 3px 4px 3px 0; font-size: 12px; cursor: pointer; }
.chip:hover { border-color: var(--accent); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.stat { background: var(--panel2); border: 1px solid var(--border); border-radius: 8px; padding: 12px; text-align: center; }
.stat b { display: block; font-size: 22px; }
.stat span { color: var(--muted); font-size: 12px; }
table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-size: 12px; font-weight: 500; }
td { word-break: break-word; }
.badge { padding: 2px 8px; border-radius: 20px; font-size: 11px; }
.badge.sent { background: rgba(63, 185, 80, .15); color: var(--green); }
.badge.error { background: rgba(248, 81, 73, .15); color: var(--red); }
.pager { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
.pager span { color: var(--muted); font-size: 12px; }
.toast { position: fixed; bottom: 20px; right: 20px; background: var(--panel2); border: 1px solid var(--accent); color: var(--text); padding: 12px 16px; border-radius: 8px; display: none; z-index: 100; max-width: 360px; }
.toast.show { display: block; animation: fade .3s; }
.toast.err { border-color: var(--red); }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (max-width: 900px) { main { grid-template-columns: 1fr; } .card.full { grid-column: auto; } }