:root {
  --accent: #6f4e37;
  --accent-dark: #4e362a;
  --bg: #faf6f2;
  --card: #ffffff;
  --border: #e6ded6;
  --text: #2b2320;
  --muted: #8a7d72;
  --success: #2e7d32;
  --danger: #c62828;
  --warn: #b8860b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  background: var(--accent);
  color: #fff;
}
.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand { color: #fff; font-weight: 700; font-size: 18px; }
.topnav { display: flex; gap: 16px; flex: 1; }
.topnav a { color: #f1e6db; }
.topbar-user { display: flex; align-items: center; gap: 10px; font-size: 14px; }

.container { max-width: 1100px; margin: 0 auto; padding: 24px 20px 60px; }

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 18px; margin: 0 0 12px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}

.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.flash-success { background: #e8f5e9; color: var(--success); border: 1px solid #c8e6c9; }
.flash-error { background: #ffebee; color: var(--danger); border: 1px solid #ffcdd2; }

.form-row { margin-bottom: 16px; }
.form-row label { display: block; margin-bottom: 6px; font-size: 14px; font-weight: 600; }
.form-row input[type=text],
.form-row input[type=number],
.form-row input[type=password],
.form-row input[type=date],
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}
.form-help { color: var(--muted); font-size: 12px; margin-top: 4px; }
.form-radio-group { display: flex; gap: 20px; }

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
}
.btn:hover { background: var(--accent-dark); text-decoration: none; }
.btn-ghost { background: transparent; border: 1px solid rgba(255,255,255,.5); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.15); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #8e1d1d; }
.btn-warn { background: var(--warn); }
.btn-secondary { background: #6b6b6b; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-active { background: #e8f5e9; color: var(--success); }
.badge-used { background: #e3e6f0; color: #3949ab; }
.badge-revoked { background: #ffebee; color: var(--danger); }
.badge-expired { background: #f5f0e6; color: var(--warn); }

.filters { display: flex; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; align-items: end; }
.filters .form-row { margin-bottom: 0; min-width: 160px; }

.login-wrap {
  max-width: 380px;
  margin: 80px auto;
  padding: 32px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
}
.login-wrap h1 { text-align: center; margin-bottom: 24px; }

.coupon-preview img { max-width: 320px; border: 1px solid var(--border); border-radius: 8px; }

.scan-box {
  max-width: 420px;
  margin: 0 auto;
}
#reader { width: 100%; border-radius: 8px; overflow: hidden; }

.result-box { padding: 16px; border-radius: 8px; margin-top: 16px; font-size: 15px; }
.result-ok { background: #e8f5e9; border: 1px solid #c8e6c9; }
.result-fail { background: #ffebee; border: 1px solid #ffcdd2; }

.actions { display: flex; gap: 8px; flex-wrap: wrap; }