:root {
  --ink: #16213A;
  --paper: #FAF8F3;
  --paper-2: #F1EDE3;
  --brass: #B08A3E;
  --brass-deep: #8C6B27;
  --slate: #5B6472;
  --line: #DDD6C6;
  --success: #3F7D58;
  --success-bg: #E9F3EC;
  --danger: #B23B3B;
  --danger-bg: #FBEBEB;
  --radius: 6px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, sans-serif;
  line-height: 1.5;
}
a { color: var(--brass-deep); }
h1, h2, h3 { font-family: Georgia, 'Times New Roman', serif; }

.app-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.brand .seal { width: 26px; height: 26px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #E3C374, var(--brass-deep) 72%); }

nav.main-nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav.main-nav a {
  text-decoration: none; color: var(--slate); padding: 7px 12px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
}
nav.main-nav a.active, nav.main-nav a:hover { background: var(--ink); color: #fff; }

main.container { max-width: 1100px; margin: 0 auto; padding: 28px 24px 80px; }

.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; }
.card h2 { margin: 0 0 4px; font-size: 19px; }
.card .hint { color: var(--slate); font-size: 13.5px; margin: 0 0 16px; }

.flash { padding: 12px 16px; border-radius: 4px; font-size: 14px; margin-bottom: 16px; }
.flash.success { background: var(--success-bg); color: var(--success); }
.flash.error { background: var(--danger-bg); color: var(--danger); }

label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=file],
select, textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 4px; padding: 9px 11px; background: #fff; color: var(--ink);
  font-size: 14px; font-family: inherit;
}
textarea { font-family: ui-monospace, monospace; font-size: 13px; min-height: 120px; }
.field { margin-bottom: 14px; }
.field-row { display: flex; gap: 16px; flex-wrap: wrap; }
.field-row > .field { flex: 1; min-width: 200px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px; border: none; border-radius: 4px; cursor: pointer;
  font-weight: 600; font-size: 13.5px; padding: 9px 16px; background: var(--ink); color: #fff; text-decoration: none;
}
.btn.secondary { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn.danger { background: var(--danger); }
.btn.brass { background: var(--brass-deep); }
.btn.small { padding: 5px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

table.data-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.data-table th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--slate);
  border-bottom: 1px solid var(--line); padding: 8px 10px; white-space: nowrap;
}
table.data-table td { border-bottom: 1px solid var(--line); padding: 8px 10px; vertical-align: top; }
table.data-table tr.row-invalid td { background: var(--danger-bg); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 4px; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.badge.ok, .badge.sent { background: var(--success-bg); color: var(--success); }
.badge.bad, .badge.revoked, .badge.failed { background: var(--danger-bg); color: var(--danger); }
.badge.muted, .badge.generated { background: var(--paper-2); color: var(--slate); }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.stat-card .num { font-size: 26px; font-weight: 700; font-family: Georgia, serif; }
.stat-card .label { font-size: 12px; color: var(--slate); text-transform: uppercase; letter-spacing: .04em; }

.public-shell { max-width: 640px; margin: 60px auto; padding: 0 20px; }
.public-shell .brand { justify-content: center; margin-bottom: 24px; }

.code-input { text-transform: uppercase; letter-spacing: .06em; font-family: ui-monospace, monospace; }

.pdf-frame { width: 100%; height: 620px; border: 1px solid var(--line); border-radius: 4px; }

.muted { color: var(--slate); }
.mono { font-family: ui-monospace, monospace; }

.designer-canvas {
  position: relative; width: 100%; max-width: 900px; margin: 0 auto; border: 1px solid var(--line);
  background: #eee; overflow: hidden; user-select: none;
}
.designer-canvas img { width: 100%; height: 100%; display: block; object-fit: fill; }
.field-chip {
  position: absolute; transform: translate(-50%, -50%); background: rgba(255,255,255,.92);
  border: 1px dashed var(--brass-deep); border-radius: 3px; padding: 3px 8px; font-size: 11px;
  cursor: move; white-space: nowrap; color: var(--ink); touch-action: none;
}
.field-chip.selected { border: 2px solid var(--ink); background: #fff; }
.palette-btn { margin: 3px; }