:root {
  --bg: #f0f0e8;
  --ink: #121212;
  --muted: #5c5c56;
  --line: #1212121a;
  --layer-1: #c8d0d8;
  --layer-2: #a8b0b8;
  --ok: #1b7f4e;
  --bad: #8a1f11;
  --surface: #fff;
  font-family: 'Space Grotesk', system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: var(--bg); }
a { color: inherit; }
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; }
.login-card { width: min(400px, 100%); background: var(--ink); color: var(--bg); padding: 2rem 1.5rem; }
.login-card h1 { margin: 0 0 0.35rem; font-size: 1.5rem; letter-spacing: -0.03em; }
.login-card p { margin: 0 0 1.25rem; color: var(--layer-2); font-size: 0.92rem; }
.login-card label { display: grid; gap: 0.3rem; margin-bottom: 0.85rem; font-size: 0.88rem; }
.login-card input, .field input, .field select, .field textarea {
  font: inherit; padding: 0.7rem 0.8rem; border: 1px solid color-mix(in srgb, var(--ink) 16%, transparent); background: #fff; color: var(--ink);
}
.login-card input { background: color-mix(in srgb, var(--bg) 6%, transparent); color: var(--bg); border-color: color-mix(in srgb, var(--bg) 22%, transparent); }
.btn { appearance: none; border: none; display: inline-flex; align-items: center; justify-content: center; padding: 0.55rem 0.95rem; background: var(--ink); color: var(--bg); font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn:hover { filter: brightness(1.05); text-decoration: none; }
.btn.secondary { background: transparent; color: var(--ink); border: 1px solid color-mix(in srgb, var(--ink) 25%, transparent); }
.btn.danger { background: var(--bad); }
.btn.small { padding: 0.35rem 0.65rem; font-size: 0.85rem; }
.login-card .btn { width: 100%; margin-top: 0.4rem; }
.error, .flash.err { background: #fde8e6; color: var(--bad); padding: 0.7rem 0.85rem; margin-bottom: 1rem; }
.flash.ok { background: #d9f2e5; color: var(--ok); padding: 0.7rem 0.85rem; margin-bottom: 1rem; }

.shell { display: grid; grid-template-columns: 230px 1fr; min-height: 100vh; }
@media (max-width: 860px) { .shell { grid-template-columns: 1fr; } }
.sidebar { background: var(--ink); color: var(--bg); padding: 1.25rem 1rem 2rem; }
.sidebar .brand { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1.5rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.85rem; }
.sidebar .brand img { width: 28px; height: 28px; }
.sidebar nav a { display: block; padding: 0.45rem 0.55rem; margin-bottom: 0.15rem; color: color-mix(in srgb, var(--bg) 80%, transparent); text-decoration: none; font-size: 0.92rem; }
.sidebar nav a:hover, .sidebar nav a.active { background: color-mix(in srgb, var(--bg) 10%, transparent); color: var(--bg); }
.sidebar .meta { margin-top: 1.5rem; font-size: 0.8rem; color: var(--layer-2); }
.sidebar .meta a { color: var(--layer-1); }
.main { padding: 1.25rem clamp(1rem, 3vw, 2rem) 2.5rem; }
.topbar { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: space-between; align-items: flex-start; margin-bottom: 1.25rem; }
.topbar h1 { margin: 0; font-size: 1.55rem; letter-spacing: -0.03em; font-weight: 600; }
.topbar .sub { color: var(--muted); font-size: 0.9rem; margin: 0.25rem 0 0; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; margin-bottom: 1.25rem; }
@media (max-width: 700px) { .stats { grid-template-columns: 1fr; } }
.stat { background: var(--surface); border: 1px solid var(--line); padding: 1rem; }
.stat .label { font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.stat .value { font-size: 1.8rem; letter-spacing: -0.03em; margin-top: 0.2rem; }
.panel { background: var(--surface); border: 1px solid var(--line); overflow: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
table.data th, table.data td { text-align: left; padding: 0.7rem 0.75rem; border-bottom: 1px solid var(--line); vertical-align: top; }
table.data th { font-size: 0.72rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); background: color-mix(in srgb, var(--bg) 70%, #fff); }
.badge { display: inline-block; padding: 0.15rem 0.45rem; font-size: 0.72rem; font-weight: 650; letter-spacing: 0.04em; text-transform: uppercase; background: #e8e8e0; }
.badge.draft { background: #fff2d9; color: #9a6700; }
.badge.sent { background: #d9f2e5; color: var(--ok); }
.badge.sending { background: #e8eef8; color: #2547a0; }
.form { max-width: 820px; display: grid; gap: 0.9rem; }
.field { display: grid; gap: 0.35rem; font-size: 0.88rem; font-weight: 500; }
.field textarea { min-height: 220px; resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.85rem; }
.checks { display: flex; flex-wrap: wrap; gap: 0.75rem 1.1rem; font-weight: 400; }
.row { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.hint { color: var(--muted); font-size: 0.85rem; font-weight: 400; }
.preview-frame { width: 100%; min-height: 640px; border: 1px solid var(--line); background: #fff; }