#ak-kalkulator {
  font-family: inherit;
  padding: 1rem 0 1.5rem;
  max-width: 720px;
}
.ak-section { margin-bottom: 2rem; }
.ak-section-title {
  font-size: 13px; font-weight: 600; color: #555; margin: 0 0 10px;
  text-transform: uppercase; letter-spacing: 0.05em;
  border-bottom: 1px solid #eee; padding-bottom: 6px;
}
.ak-minwert { font-size: 11px; color: #aaa; font-weight: 400; }

/* INPUTS */
#ak-kalkulator label { font-size: 13px; color: #666; display: block; margin-bottom: 5px; }
#ak-kalkulator input[type=number] {
  width: 100%; box-sizing: border-box; padding: 9px 11px;
  border: 1px solid #ddd; border-radius: 6px; font-size: 15px;
  background: #fff; color: #111;
}
#ak-kalkulator input[type=number]:focus { outline: none; border-color: #555; }
.ak-grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; }

/* OPTIONEN */
.ak-option-grid { display: grid; grid-template-columns: 1fr; gap: 8px; }
.ak-option-grid-2 { grid-template-columns: 1fr 1fr; }
.ak-option-grid-3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 600px) {
  .ak-option-grid-2, .ak-option-grid-3 { grid-template-columns: 1fr; }
}
.ak-option-item {
  border: 1.5px solid #e0e0e0; border-radius: 8px; padding: 10px 13px;
  cursor: pointer; display: flex; align-items: center; gap: 10px;
  transition: border-color 0.15s, background 0.15s; background: #fff;
}
.ak-option-item:hover { border-color: #999; background: #fafafa; }
.ak-option-item.selected { border-color: #111; background: #f5f5f5; }
.ak-option-check {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid #ccc; flex-shrink: 0; transition: all 0.15s;
}
.ak-option-check.checked { border-color: #111; background: #111; box-shadow: inset 0 0 0 3px #fff; }
.ak-option-body { flex: 1; }
.ak-option-name { font-size: 13px; font-weight: 600; color: #111; margin: 0 0 2px; }
.ak-option-desc { font-size: 11px; color: #999; margin: 0; }
.ak-option-price { font-size: 13px; font-weight: 600; color: #333; white-space: nowrap; margin-left: auto; }

/* UPLOAD */
.ak-upload-label {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  border: 2px dashed #ddd; border-radius: 8px; padding: 1.5rem; cursor: pointer;
  transition: border-color 0.15s, background 0.15s; background: #fafafa; text-align: center;
}
.ak-upload-label:hover { border-color: #999; background: #f5f5f5; }
.ak-upload-label.dragover { border-color: #111; background: #f0f0f0; }
.ak-upload-icon { font-size: 26px; }
#ak-upload-text { font-size: 14px; font-weight: 600; color: #333; }
.ak-upload-hint { font-size: 12px; color: #bbb; }
.ak-upload-info { font-size: 13px; color: #555; margin: 8px 0 0; min-height: 18px; }

/* PREIS */
#ak-result { display: none; }
.ak-divider { border: none; border-top: 1px solid #e0e0e0; margin: 0 0 1.25rem; }
.ak-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; margin-bottom: 1rem; }
.ak-metric { background: #f5f5f5; border-radius: 6px; padding: 0.85rem 1rem; }
.ak-metric-highlight { background: #111; }
.ak-metric-highlight .ak-metric-label { color: #aaa; }
.ak-metric-highlight .ak-metric-value { color: #fff; }
.ak-metric-label { font-size: 12px; color: #666; margin: 0 0 4px; }
.ak-metric-value { font-size: 20px; font-weight: 600; margin: 0; color: #111; }

/* WARENKORB */
.ak-cart-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.ak-note { font-size: 11px; color: #aaa; margin: 0; }
.ak-cart-btn {
  background: #111; color: #fff; border: none; border-radius: 8px;
  padding: 12px 24px; font-size: 15px; font-weight: 600; cursor: pointer;
  transition: background 0.15s; white-space: nowrap;
}
.ak-cart-btn:hover { background: #333; }
.ak-cart-msg { margin-top: 12px; padding: 10px 14px; border-radius: 6px; font-size: 13px; font-weight: 500; }
.ak-cart-msg.success { background: #e8f5e9; color: #2e7d32; border: 1px solid #a5d6a7; }
.ak-cart-msg.error   { background: #fdecea; color: #c62828; border: 1px solid #ef9a9a; }
.ak-hint { font-size: 13px; color: #888; margin-top: 8px; min-height: 18px; }

/* ---- STICKY PREIS-BOX ---- */
#ak-sticky-preis {
  display: none;
  position: relative;
  background: #111;
  color: #fff;
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 1rem;
  margin-top: 0;
  z-index: 100;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
#ak-sticky-preis.sichtbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.ak-sticky-label { font-size: 12px; color: #aaa; margin: 0; }
.ak-sticky-preis-wert { font-size: 24px; font-weight: 700; color: #fff; margin: 0; }
.ak-sticky-hint { font-size: 11px; color: #888; margin: 0; }