:root{
  --bg:#f4f6fa; --card:#fff; --ink:#151a24; --muted:#6a7486; --line:#e3e8f0;
  --brand:#2f5bea; --brand-d:#2246c2; --ok:#0f9d58; --warn:#d98207; --err:#d33a3a;
  --radius:12px; --shadow:0 1px 2px rgba(16,24,40,.05),0 8px 24px -12px rgba(16,24,40,.18);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
code{background:#eef1f7;padding:1px 5px;border-radius:5px;font-size:.88em}

/* ---------------------------------------------------------------- topbar */
.topbar{display:flex;align-items:center;gap:24px;background:var(--card);
  border-bottom:1px solid var(--line);padding:0 24px;height:60px;position:sticky;top:0;z-index:20}
.brand{font-weight:700;font-size:16px;display:flex;align-items:center;gap:8px;white-space:nowrap}
.logo{font-size:20px}
.topbar nav{display:flex;gap:4px;flex:1}
.topbar nav a{color:var(--muted);padding:7px 12px;border-radius:8px;font-weight:500}
.topbar nav a:hover{background:#f0f3f9;text-decoration:none}
.topbar nav a.on{background:#e8edfd;color:var(--brand)}
.logout{display:flex;align-items:center;gap:10px}
.user{color:var(--muted);font-size:13px}

.page{max-width:1180px;margin:24px auto 64px;padding:0 24px;display:flex;flex-direction:column;gap:20px}

/* ------------------------------------------------------------------ cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px}
.card-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:16px}
.card-head h2{margin:0;font-size:15px;font-weight:650;letter-spacing:.01em}
.muted{color:var(--muted)}
.small{font-size:13px}
.empty{color:var(--muted);text-align:center;padding:28px 0;margin:0}

/* -------------------------------------------------------------------- kpi */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:16px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:16px 18px}
.kpi-label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em;font-weight:600}
.kpi-value{font-size:30px;font-weight:700;margin:6px 0 2px;line-height:1.1}
.kpi-value.sm{font-size:18px;overflow-wrap:anywhere}
.kpi-sub{color:var(--muted);font-size:13px}

/* ---------------------------------------------------------------- buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;
  border:1px solid var(--line);background:#fff;color:var(--ink);font:inherit;font-weight:550;
  padding:9px 15px;border-radius:9px;transition:.12s;white-space:nowrap}
.btn:hover{background:#f6f8fc;text-decoration:none}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-d)}
.btn.ghost{background:transparent}
.btn.sm{padding:5px 9px;font-size:12.5px;border-radius:7px}
td .btn.sm+.btn.sm{margin-left:4px}
.btn.block{width:100%;margin-top:8px}
.btn.danger{color:var(--err);border-color:#f3d4d4}
.btn.danger:hover{background:#fdf2f2}
.btn[disabled]{opacity:.55;cursor:progress}

.actions{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:14px}

/* ----------------------------------------------------------------- tables */
.table-wrap{overflow-x:auto;margin:0 -20px -20px;padding:0 20px 4px}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;color:var(--muted);font-size:12px;text-transform:uppercase;
  letter-spacing:.04em;font-weight:600;padding:8px 10px;border-bottom:1px solid var(--line)}
td{padding:11px 8px;border-bottom:1px solid #f0f3f8;vertical-align:middle}
tr:last-child td{border-bottom:0}
.r{text-align:right}
.nowrap{white-space:nowrap}
.ellipsis{max-width:210px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.badge{display:inline-block;padding:3px 9px;border-radius:99px;font-size:12px;font-weight:600}
.badge.sent{background:#e4f6ec;color:#0b7a44}
.badge.draft{background:#eef1f7;color:#5b6577}
.badge.error{background:#fdeaea;color:#b32222}
.err-msg{color:var(--err);font-size:11px;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ----------------------------------------------------------------- alerts */
.alert{padding:12px 14px;border-radius:10px;border:1px solid;font-size:14px}
.alert.ok{background:#e9f8ef;border-color:#bde5cd;color:#0b6b3d}
.alert.warn{background:#fff6e8;border-color:#f3dcb4;color:#8a5a08}
.alert.error{background:#fdeeee;border-color:#f2c9c9;color:#a32020}
.alert.info{background:#eef2fe;border-color:#cdd8fb;color:#2c46a8;margin-bottom:16px}

/* ------------------------------------------------------------------ forms */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.field{display:flex;flex-direction:column;gap:5px;font-size:13px;color:var(--muted);font-weight:550}
.field.wide{grid-column:1/-1}
.field.inline{flex-direction:row;align-items:center;gap:8px}
.field.check{flex-direction:row;align-items:center;gap:8px;color:var(--ink);font-weight:500}
.field input,.field select,.field textarea{
  font:15px/1.45 inherit;color:var(--ink);background:#fff;border:1px solid var(--line);
  border-radius:8px;padding:9px 11px;width:100%}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,91,234,.13)}
.field textarea{resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}
.field.check input{width:auto}
.settings{display:flex;flex-direction:column;gap:20px}
.sticky-save{position:sticky;bottom:0;display:flex;gap:10px;padding:14px 0;
  background:linear-gradient(to top,var(--bg) 70%,transparent)}

/* ------------------------------------------------------------------- logs */
.logs{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.log{display:flex;gap:14px;padding:9px 0;border-bottom:1px solid #f2f4f9;font-size:14px;align-items:baseline}
.log:last-child{border-bottom:0}
.log-time{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums;white-space:nowrap;min-width:132px}
.log.error .log-msg{color:var(--err)}
.log.success .log-msg{color:#0b7a44}
.log.warn .log-msg{color:var(--warn)}

/* ------------------------------------------------------------------ login */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}
.login{width:min(380px,100%);text-align:center;display:flex;flex-direction:column;gap:12px;padding:32px}
.login-logo{font-size:38px}
.login h1{margin:0;font-size:20px}
.login p{margin:0 0 6px}
.login .field,.login label{text-align:left;display:flex;flex-direction:column;gap:5px;
  font-size:13px;color:var(--muted);font-weight:550}
.login input{font:15px inherit;color:var(--ink);border:1px solid var(--line);
  border-radius:8px;padding:10px 12px;width:100%}
.login input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,91,234,.13)}

/* ------------------------------------------------------------------ toast */
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);z-index:60;
  background:#151a24;color:#fff;padding:12px 18px;border-radius:10px;font-size:14px;
  box-shadow:0 10px 30px -8px rgba(0,0,0,.4);max-width:min(560px,92vw)}
.toast.err{background:#b32222}
.toast.ok{background:#0b7a44}

@media (max-width:720px){
  .topbar{padding:0 14px;gap:12px;height:auto;flex-wrap:wrap;padding-bottom:10px;padding-top:10px}
  .page{padding:0 14px;margin-top:16px}
  .log-time{min-width:auto}
}