:root {
  --bg: #f3f5fa; --card: #fff; --ink: #14203a; --muted: #5a6680; --line: #dde3ee; --brand: #0b5cff; --brand2: #00b3ff; --brand-ink: #fff;
  --ok: #15803d; --warn: #b45309; --bad: #b91c1c; --ok-bg: #dcfce7; --warn-bg: #fef3c7; --bad-bg: #fee2e2; --info-bg: #e0ecff; --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0c1222; --card: #151d33; --ink: #e8edf8; --muted: #9aa6bf; --line: #27324f; --brand: #5b93ff; --brand2: #38bdf8; --brand-ink: #06142e;
    --ok: #4ade80; --warn: #fbbf24; --bad: #f87171; --ok-bg: #11351f; --warn-bg: #3a2c0b; --bad-bg: #3d1717; --info-bg: #14284d; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--brand); }
h1 { font-size: 24px; margin: 0 0 4px; letter-spacing: -.01em; } h2 { font-size: 18px; margin: 0 0 12px; } h3 { font-size: 15px; margin: 0 0 8px; }
.sub { color: var(--muted); margin: 0; } .muted { color: var(--muted); } .hint { color: var(--muted); font-size: 13px; }
[hidden] { display: none !important; }
.boot { padding: 40px; color: var(--muted); }

/* Bausteine */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin-bottom: 16px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: 9px 15px; border-radius: 9px; cursor: pointer; font: inherit; text-decoration: none; }
.btn:hover { border-color: var(--brand); } .btn.primary { background: linear-gradient(135deg, var(--brand), var(--brand2)); border-color: transparent; color: #fff; font-weight: 600; }
.btn.danger { color: var(--bad); } .btn.small { padding: 4px 10px; font-size: 13px; } .btn[disabled] { opacity: .5; cursor: default; }
.btn.block { width: 100%; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 4px; }
.field { margin-bottom: 14px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], input[type=url], select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px; background: var(--bg); color: var(--ink); font: inherit; }
input:focus-visible, select:focus-visible, textarea:focus-visible, .btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; }
.msg { padding: 10px 14px; border-radius: 9px; margin-bottom: 14px; background: var(--info-bg); } .msg.err { background: var(--bad-bg); color: var(--bad); } .msg.ok { background: var(--ok-bg); color: var(--ok); } .msg.warn { background: var(--warn-bg); color: var(--warn); }
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--bg); color: var(--muted); }
.badge.active, .badge.paid { background: var(--ok-bg); color: var(--ok); } .badge.created, .badge.open, .badge.pending { background: var(--info-bg); color: var(--brand); }
.badge.used, .badge.expired, .badge.canceled { background: var(--bg); color: var(--muted); } .badge.blocked, .badge.void, .badge.failed { background: var(--bad-bg); color: var(--bad); }
.scroll { overflow-x: auto; } table { width: 100%; border-collapse: collapse; } th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; font-weight: 600; white-space: nowrap; } td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
code, pre { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; } pre { background: var(--bg); border: 1px solid var(--line); border-radius: 9px; padding: 12px; overflow-x: auto; }
.empty { padding: 28px; text-align: center; color: var(--muted); }

/* Kundenseiten (Zahlen, PIN pruefen) */
.center { max-width: 520px; margin: 0 auto; padding: 28px 16px 60px; }
.brandbar { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; margin-bottom: 18px; }
.logo { width: 34px; height: 34px; border-radius: 9px; background: linear-gradient(135deg, var(--brand), var(--brand2)); display: grid; place-items: center; color: #fff; font-size: 18px; }
.amount { font-size: 38px; font-weight: 800; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.pin-row { display: flex; gap: 8px; margin-bottom: 10px; align-items: center; }
.pin-row input { font: 600 18px/1 ui-monospace, Menlo, Consolas, monospace; letter-spacing: .08em; text-align: center; }
.pin-row .st { min-width: 90px; text-align: right; font-size: 13px; }
.safety { background: var(--warn-bg); color: var(--warn); border-radius: 9px; padding: 10px 12px; font-size: 13px; margin-top: 16px; }
.sum { display: flex; justify-content: space-between; padding: 8px 0; border-top: 1px solid var(--line); margin-top: 8px; font-weight: 600; }
.big { font-size: 36px; font-weight: 800; font-variant-numeric: tabular-nums; }
.hist { list-style: none; margin: 0; padding: 0; } .hist li { display: flex; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 14px; } .hist li:last-child { border: 0; }
.pos { color: var(--ok); } .neg { color: var(--bad); }