:root{
  --blue:#1f4e79; --blue-d:#173a5b; --ink:#1c2733; --muted:#64748b;
  --line:#e2e8f0; --bg:#f1f4f8; --card:#ffffff; --danger:#b42318; --ok:#067647;
  --sidebar:#0f2233; --sidebar-hover:#1c3a54; --accent:#5fa8dd;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:14px}
.hidden{display:none !important}
h1{font-size:22px;margin:0}
h3{margin:0 0 12px 0;font-size:15px}
label{display:block;font-weight:600;font-size:12px;color:#374151;margin:14px 0 5px}
.hint{font-weight:400;color:var(--muted);font-size:11px}
input,textarea,select{width:100%;padding:9px 11px;border:1px solid var(--line);
  border-radius:7px;font-size:14px;font-family:inherit;background:#fff;color:var(--ink)}
textarea{resize:vertical;font-family:ui-monospace,Menlo,monospace;font-size:13px;line-height:1.5}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(26,86,219,.12)}
hr{border:none;border-top:1px solid var(--line);margin:20px 0}

.btn{padding:9px 16px;border:1px solid var(--line);background:#fff;border-radius:7px;
  font-size:13px;font-weight:600;cursor:pointer;color:var(--ink)}
.btn:hover{background:#f9fafb}
.btn.primary{background:var(--blue);border-color:var(--blue);color:#fff}
.btn.primary:hover{background:var(--blue-d)}
.btn.ghost{background:transparent;border-style:dashed}
.btn.danger-ghost{color:var(--danger);border-color:#f0c9c4}
.btn.danger-ghost:hover{background:#fef2f1}
.btn.full{width:100%}
.link-btn{background:none;border:none;color:var(--blue);cursor:pointer;font-size:13px;padding:0;font-weight:600}
.chip{padding:4px 9px;border:1px solid var(--line);background:#f8fafc;border-radius:20px;
  font-size:11px;cursor:pointer;color:#374151}
.chip:hover{border-color:var(--blue);color:var(--blue)}

/* login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:32px;width:340px;
  box-shadow:0 8px 30px rgba(16,24,40,.08)}
.brand{font-size:24px;font-weight:800;color:var(--blue);letter-spacing:-.5px}
.brand-sub{color:var(--muted);font-size:12px;margin:2px 0 18px}
.error-line{color:var(--danger);font-size:12px;margin-top:10px;min-height:16px}

/* app shell */
.app{display:flex;min-height:100vh}
.sidebar{width:210px;background:var(--sidebar);color:#cbd5e1;display:flex;flex-direction:column;padding:20px 14px}
.side-brand{color:#fff;font-weight:800;font-size:17px;letter-spacing:-.3px;margin-bottom:24px;padding:0 8px}
.side-brand span{color:var(--accent);font-weight:600;font-size:12px}
.sidebar nav{display:flex;flex-direction:column;gap:4px;flex:1}
.nav-item{text-align:left;background:none;border:none;color:#cbd5e1;padding:10px 12px;
  border-radius:7px;cursor:pointer;font-size:14px;font-weight:600}
.nav-item:hover{background:var(--sidebar-hover);color:#fff}
.nav-item.active{background:var(--blue);color:#fff}
.side-foot{padding:8px}
.side-foot .link-btn{color:#94a3b8}

.content{flex:1;padding:26px 30px;overflow-y:auto;max-height:100vh}
.view-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:12px}
.head-actions{display:flex;gap:8px}

/* campaign cards */
.card-list{display:flex;flex-direction:column;gap:12px}
.camp-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 18px;
  display:flex;justify-content:space-between;align-items:center;cursor:pointer}
.camp-card:hover{border-color:var(--blue);box-shadow:0 2px 8px rgba(16,24,40,.05)}
.camp-card h4{margin:0 0 4px;font-size:15px}
.camp-card .sub{color:var(--muted);font-size:12px}
.badge{font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px;text-transform:capitalize}
.badge.draft{background:#f1f5f9;color:#475569}
.badge.sending{background:#dbeafe;color:#1e40af}
.badge.scheduled{background:#fef3c7;color:#92400e}
.badge.paused{background:#fde8e8;color:#9b1c1c}
.badge.done{background:#dcfce7;color:#166534}
.mini-stats{display:flex;gap:14px;font-size:12px;color:var(--muted);margin-top:6px}
.mini-stats b{color:var(--ink)}

/* editor */
.editor-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.editor-col{background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px}
.preview-col{position:sticky;top:0}
.token-row{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-top:8px}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.upload-row,.send-row{display:flex;gap:8px;align-items:center}
.send-row select{flex:1}
.send-actions{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.stats-line{font-size:12px;color:var(--muted);margin-top:10px;min-height:16px}

.preview-head{display:flex;justify-content:space-between;align-items:center;
  font-weight:700;font-size:13px;margin-bottom:10px}
.preview-meta{background:#fff;border:1px solid var(--line);border-radius:10px 10px 0 0;
  padding:12px 14px;font-size:13px;line-height:1.7;border-bottom:none}
.preview-frame{width:100%;height:620px;border:1px solid var(--line);border-radius:0 0 10px 10px;background:#fff}

/* settings */
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.settings-col{background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px}
.sig-preview{border:1px solid var(--line);border-radius:8px;padding:14px;min-height:80px;background:#fff}

/* attachments */
.attach-list{margin-top:8px;display:flex;flex-direction:column;gap:6px}
.attach-item{display:flex;justify-content:space-between;align-items:center;background:#f8fafc;
  border:1px solid var(--line);border-radius:7px;padding:8px 12px;font-size:13px}

/* report */
.report-summary{display:flex;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.rchip{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 18px;min-width:110px}
.rchip b{font-size:22px;display:block;line-height:1.1}
.rchip span{font-size:12px;color:var(--muted)}
.rchip.sent b{color:var(--ok)}
.rchip.failed b{color:var(--danger)}
.rchip.prog b{color:var(--blue)}
.report-section{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:16px;overflow:hidden}
.report-section h3{margin:0;padding:12px 16px;border-bottom:1px solid var(--line);font-size:13px;background:#f8fafc;display:flex;justify-content:space-between}
.rt-wrap{max-height:360px;overflow:auto}
table.rt{width:100%;border-collapse:collapse;font-size:13px}
table.rt th,table.rt td{text-align:left;padding:8px 16px;border-bottom:1px solid #f0f1f3;vertical-align:top}
table.rt th{color:var(--muted);font-weight:600;font-size:11px;text-transform:uppercase;position:sticky;top:0;background:#fff}
table.rt tr:last-child td{border-bottom:none}
table.rt td.err{color:var(--danger);font-size:12px}
.report-empty{padding:16px;color:var(--muted);font-size:13px}
.badge.pending{background:#e6ecf5;color:#2a4a6b}
.badge.sent{background:#dcfce7;color:#166534}
.badge.failed{background:#fee2e2;color:#991b1b}

/* contacts editor */
.contacts-toolbar{display:flex;gap:8px;align-items:center;margin-bottom:12px;flex-wrap:wrap}
.contacts-toolbar #contactSearch{flex:1;min-width:180px}
.contacts-add{display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:8px;margin-bottom:14px;
  background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px}
.ct-wrap{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.ct-scroll{max-height:60vh;overflow:auto}
table.ct{width:100%;border-collapse:collapse;font-size:13px}
table.ct th{position:sticky;top:0;background:#f8fafc;text-align:left;padding:10px 12px;
  font-size:11px;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--line);z-index:1}
table.ct td{padding:6px 10px;border-bottom:1px solid #eef1f5;vertical-align:middle}
table.ct tr:last-child td{border-bottom:none}
table.ct input{padding:6px 8px;font-family:inherit;font-size:13px}
table.ct td.rownum{color:var(--muted);font-size:11px;width:40px;text-align:right}
.ct-actions{display:flex;gap:6px;white-space:nowrap}
.btn.sm{padding:5px 10px;font-size:12px}
.row-dirty{background:#fffbeb}
.row-sent input{background:#fafafa}

@media(max-width:900px){
  .editor-grid,.settings-grid{grid-template-columns:1fr}
  .preview-col{position:static}
}