:root {
  --bg: #f6f5f2;
  --card: #ffffff;
  --ink: #26241f;
  --muted: #7a7466;
  --brand: #e88a9a;
  --brand-ink: #ffffff;
  --border: #e6e2d8;
  --danger: #c0392b;
  --success: #2f7a4f;
  --warn: #9a6b16;
  --radius: 10px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

.topbar { background: var(--card); border-bottom: 1px solid var(--border); }
.topbar-inner {
  max-width: 1080px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { font-weight: 700; text-decoration: none; color: var(--ink); font-size: 18px; }
.brand span { color: var(--brand); }
nav a { margin-left: 18px; color: var(--muted); text-decoration: none; font-size: 14px; }
nav a:hover { color: var(--ink); }

.container { max-width: 1080px; margin: 0 auto; padding: 28px 20px 60px; }

h1 { font-size: 22px; margin: 0 0 18px; }

.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }

.btn {
  display: inline-block; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--card); color: var(--ink); text-decoration: none; font-size: 14px; cursor: pointer;
}
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn-primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn-danger { color: var(--danger); border-color: var(--danger); background: transparent; }
.btn-block { width: 100%; }

.table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; }
.table th, .table td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: left; font-size: 14px; }
.table th { background: #fbfaf7; font-weight: 600; color: var(--muted); }
.row-actions form { display: inline; }
.row-actions .btn { margin-right: 6px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; text-transform: capitalize; }
.badge-draft { background: #eee; color: #555; }
.badge-sending { background: #fdecc8; color: var(--warn); }
.badge-sent { background: #d9efe0; color: var(--success); }

.muted { color: var(--muted); font-size: 13px; }
.empty { color: var(--muted); padding: 40px 0; text-align: center; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.flash-success { background: #d9efe0; color: var(--success); }
.flash-error { background: #fbdcd8; color: var(--danger); }
.flash-warn { background: #fdecc8; color: var(--warn); }
.flash-info { background: #eef1fb; color: #33488f; }

.login-box {
  max-width: 360px; margin: 60px auto; background: var(--card); padding: 28px;
  border-radius: var(--radius); border: 1px solid var(--border);
}
.login-box h1 { text-align: center; }
label { display: block; margin-bottom: 14px; font-size: 14px; color: var(--muted); }
input[type=text], input[type=password], input[type=email], input[type=file], textarea {
  display: block; width: 100%; margin-top: 6px; padding: 9px 10px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; font-family: inherit; color: var(--ink); background: #fff;
}
textarea { font-family: ui-monospace, Consolas, monospace; font-size: 13px; }

.editor { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.editor-fields { background: var(--card); padding: 20px; border-radius: var(--radius); border: 1px solid var(--border); }
.editor-preview { position: sticky; top: 20px; }
.preview-label { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
#previewFrame { width: 100%; height: 560px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }

.stat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 24px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; text-align: center; }
.stat-card .num { font-size: 26px; font-weight: 700; }
.stat-card .label { font-size: 12px; color: var(--muted); text-transform: uppercase; }

.progress { background: #eee; border-radius: 999px; overflow: hidden; height: 10px; margin: 16px 0; }
.progress-bar { background: var(--brand); height: 100%; width: 0%; transition: width .3s; }

@media (max-width: 860px) {
  .editor { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}