/* ---------- Grundlayout ---------- */
:root { --gap: 12px; --bg: #f6f9fc; --line: #e6ebf1; --txt: #111; --muted: #6b7280; }
* { box-sizing: border-box; }
html, body { height: 100%; }
body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; margin: 0; color: var(--txt); background: var(--bg); }
.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }

/* Zwei-Spalten Checkout */
.checkout { display: grid; grid-template-columns: minmax(260px, 420px) minmax(340px, 1fr); gap: 24px; }
@media (max-width: 900px) { .checkout { grid-template-columns: 1fr; } }

/* ---------- Summary (linke Spalte) ---------- */
.summary { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px; position: sticky; top: 16px; align-self: start; }
@media (max-width: 900px) { .summary { position: static; } }
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.brand-logo { width: 22px; height: 22px; object-fit: contain; }
.brand-name { font-weight: 700; letter-spacing: .2px; }

.grand { padding: 8px 0 12px; border-bottom: 1px solid var(--line); margin-bottom: 10px; }
.grand-total { font-size: 32px; font-weight: 800; line-height: 1.1; }
.grand-sub { color: var(--muted); margin-top: 2px; }

/* Zusammenfassungsliste */
.summary-box { margin-top: 6px; }
.summary-items { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.li-item { padding: 2px 0; }
.li-row { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: start; }
.li-main {}
.li-name { font-weight: 800; }
.li-desc { color: var(--muted); font-size: 12px; margin-top: 3px; }
.li-priceblock { text-align: right; }
.li-price { font-weight: 800; }
.li-rec { color: var(--muted); font-size: 12px; margin-top: 2px; }

.hint { font-size: 12px; color: var(--muted); }
.mt-6 { margin-top: 6px; } .mt-8 { margin-top: 8px; } .mt-12 { margin-top: 12px; } .mt-14 { margin-top: 14px; }

/* ---------- Rechte Spalte ---------- */
.flow { display: grid; gap: 24px; }
.panel { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
h2 { margin: 0 0 12px; font-size: 18px; }

/* ---------- Formular-Grid: exakt gesteuert ---------- */
.grid-form {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gap);
}
.grid-form .col-12 { grid-column: span 12; }
.grid-form .col-8  { grid-column: span 8; }
.grid-form .col-6  { grid-column: span 6; min-width: 220px; }
.grid-form .col-4  { grid-column: span 4; min-width: 140px; }

input[type="text"], input[type="email"], select {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid #d9dde5;
  background: #fff;
  outline: none;
}
input::placeholder { color: #9aa3af; }

/* PaymentElement Shell */
.payment-shell { border: 1px solid #d9dde5; border-radius: 10px; padding: 10px; background: #fff; }

/* Buttons – an Stripe angelehnt (schwarz, vollbreit) */
button { padding: 14px 16px; border-radius: 10px; border: 0; cursor: pointer; font-weight: 600; }
button.primary { background: #000; color: #fff; width: 100%; }
button[disabled] { opacity: .6; cursor: not-allowed; }

/* Button + Spinner */
.btn { position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.btn .spinner { display: none; width: 16px; height: 16px; border-radius: 50%; border: 2px solid rgba(255,255,255,.7); border-top-color: rgba(255,255,255,.25); animation: spin .8s linear infinite; }
.btn:not(.primary) .spinner { border-color: rgba(0,0,0,.6); border-top-color: rgba(0,0,0,.25); } /* falls mal ein nicht-schwarzer Button hinzukommt */
.btn.loading .spinner { display: inline-block; }
.btn.loading .btn-label { opacity: .9; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Consents */
.checkbox { display: flex; gap: 10px; align-items: flex-start; }
.error { color: #b00020; margin-top: 8px; }

/* Mobil: 1-spaltig im Formular */
@media (max-width: 700px) {
  .grand-total { font-size: 28px; }
  .li-row { gap: 10px; }
  .grid-form { grid-template-columns: repeat(6, 1fr); }
  .grid-form .col-12,
  .grid-form .col-8,
  .grid-form .col-6,
  .grid-form .col-4 { grid-column: 1 / -1; } /* alles untereinander */
}