:root{
  --bg:#f4f6f9; --card:#fff; --ink:#1f2733; --muted:#6b7787; --line:#e4e8ee;
  --brand:#2563eb; --brand-d:#1d4ed8; --ok:#0f9d58; --okbg:#e8f5ee;
  --err:#c0392b; --errbg:#fdecea; --danger:#dc2626;
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink)}
.wrap{max-width:880px;margin:0 auto;padding:0 18px}
.bar{background:var(--card);border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;justify-content:space-between;height:58px}
.brand{font-weight:700;color:var(--ink);text-decoration:none;font-size:17px}
.who{color:var(--muted);margin-right:10px;font-size:14px}
main.wrap{padding-top:24px;padding-bottom:40px}
h1{font-size:22px;margin:0 0 16px}
.muted{color:var(--muted)}
.sm{font-size:13px}
.nowrap{white-space:nowrap}
.row{display:flex;align-items:center}
.row.between{justify-content:space-between;gap:12px;flex-wrap:wrap}
.row.gap{gap:10px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px;margin-bottom:18px;box-shadow:0 1px 2px rgba(20,30,50,.04)}
.card.narrow{max-width:420px;margin:8vh auto 0}
label{display:block;margin:0 0 14px;font-weight:600}
label .muted{font-weight:400}
input,textarea{width:100%;margin-top:6px;padding:10px 12px;border:1px solid #cfd6e0;border-radius:8px;font:inherit;background:#fff;color:var(--ink)}
input[type=file]{padding:8px;background:#fafbfc}
textarea{resize:vertical}
input:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(37,99,235,.15)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:end}
.presets{margin-bottom:14px}
.btn{display:inline-block;border:1px solid transparent;border-radius:8px;padding:10px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;color:var(--ink);background:#eef1f5;line-height:1}
.btn.sm{padding:6px 10px;font-size:13px}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-d)}
.btn.ghost{background:#fff;border-color:#cfd6e0}
.btn.ghost:hover{background:#f4f6f9}
.btn.danger{background:#fff;border-color:#f1c2bd;color:var(--danger)}
.btn.danger:hover{background:var(--errbg)}
.inline{display:inline}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:11px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
tr:last-child td{border-bottom:none}
.badge{display:inline-block;padding:3px 9px;border-radius:999px;font-size:12px;font-weight:700}
.b-pending{background:#fff4d6;color:#946200}
.b-sent{background:var(--okbg);color:var(--ok)}
.b-failed{background:var(--errbg);color:var(--err)}
.b-cancel{background:#eceff3;color:var(--muted)}
.flash{padding:11px 14px;border-radius:8px;margin:0 0 16px;font-weight:600}
.flash.ok{background:var(--okbg);color:var(--ok);border:1px solid #bfe3cd}
.flash.err{background:var(--errbg);color:var(--err);border:1px solid #f3c4be}
footer.wrap{padding:24px 18px;font-size:13px}
@media(max-width:560px){.grid2{grid-template-columns:1fr}}