/**
 * cart.css – Eigenstaendiges Premium-Design fuer die xeno-CMS Cart-Extension.
 *
 * Design-Prinzipien:
 *   - Inspiriert von Zalando, Apple, Google – clean, typografisch, hochwertig
 *   - Nicht vom Website-Theme abhaengig – eigenes visuelles System
 *   - Mobile-first, responsive bis Desktop
 *   - CSS Custom Properties fuer minimale Theme-Anpassung (Akzentfarbe)
 *   - Micro-Interactions und sanfte Animationen
 *
 * Zusammenhaenge:
 *   - cart.js → erzeugt die DOM-Struktur mit den hier gestylten Klassen
 *   - class_website_parser.php → renderCartExtension() erzeugt den .xeno-cart Container
 *
 * Klassen-Konvention: xeno-cart-* (BEM-inspiriert, kein Konflikt mit Website-Styles)
 */

/* ======================================================================== */
/* Custom Properties                                                         */
/* ======================================================================== */

:root {
  --xc-accent: #000;
  --xc-accent-hover: #333;
  --xc-accent-text: #fff;
  --xc-bg: #fafafa;
  --xc-surface: #fff;
  --xc-border: #e5e5e5;
  --xc-border-focus: #000;
  --xc-text: #1a1a1a;
  --xc-text-secondary: #6b6b6b;
  --xc-text-muted: #999;
  --xc-success: #00875a;
  --xc-success-bg: #e3fcef;
  --xc-error: #de350b;
  --xc-error-bg: #ffebe6;
  --xc-warning: #ff991f;
  --xc-warning-bg: #fffae6;
  --xc-radius: 8px;
  --xc-radius-lg: 16px;
  --xc-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --xc-shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
  --xc-transition: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
  --xc-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --xc-max-width: 720px;
}

/* ======================================================================== */
/* Base Container                                                            */
/* ======================================================================== */

.xeno-cart {
  font-family: var(--xc-font);
  color: var(--xc-text);
  max-width: var(--xc-max-width);
  margin: 0 auto;
  padding: 2rem 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.xeno-cart *, .xeno-cart *::before, .xeno-cart *::after {
  box-sizing: border-box;
}

/* ======================================================================== */
/* Stepper Header                                                            */
/* ======================================================================== */

.xeno-cart-stepper {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 3rem;
  padding: 0;
  counter-reset: step;
  position: relative;
}

.xeno-cart-stepper::before {
  content: '';
  position: absolute;
  top: 16px;
  left: 24px;
  right: 24px;
  height: 2px;
  background: var(--xc-border);
  z-index: 0;
}

.xeno-cart-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  z-index: 1;
  flex: 1;
}

.xeno-cart-step__number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  background: var(--xc-surface);
  border: 2px solid var(--xc-border);
  color: var(--xc-text-muted);
  transition: all var(--xc-transition);
}

.xeno-cart-step__label {
  font-size: 11px;
  font-weight: 500;
  color: var(--xc-text-muted);
  text-align: center;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transition: color var(--xc-transition);
}

.xeno-cart-step--active .xeno-cart-step__number {
  background: var(--xc-accent);
  border-color: var(--xc-accent);
  color: var(--xc-accent-text);
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.06);
}

.xeno-cart-step--active .xeno-cart-step__label {
  color: var(--xc-text);
  font-weight: 600;
}

.xeno-cart-step--done .xeno-cart-step__number {
  background: var(--xc-accent);
  border-color: var(--xc-accent);
  color: var(--xc-accent-text);
}

.xeno-cart-step--done .xeno-cart-step__label {
  color: var(--xc-text-secondary);
}

.xeno-cart-step--done {
  cursor: pointer;
}

.xeno-cart-step--done:hover .xeno-cart-step__label {
  color: var(--xc-text);
}

/* Mobile: Labels ausblenden, nur Nummern */
@media (max-width: 600px) {
  .xeno-cart-step__label {
    display: none;
  }
  .xeno-cart-stepper {
    margin-bottom: 2rem;
  }
}

/* ======================================================================== */
/* Content Area                                                              */
/* ======================================================================== */

.xeno-cart-content {
  animation: xcFadeIn 0.3s ease-out;
}

@keyframes xcFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ======================================================================== */
/* Cart Items (Schritt 1)                                                    */
/* ======================================================================== */

.xeno-cart-items {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--xc-border);
  border-radius: var(--xc-radius-lg);
  overflow: hidden;
  box-shadow: var(--xc-shadow);
  margin-bottom: 2rem;
}

.xeno-cart-item {
  background: var(--xc-surface);
  padding: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 1rem;
  transition: background var(--xc-transition);
}

.xeno-cart-item:hover {
  background: #fefefe;
}

.xeno-cart-item--unavailable {
  opacity: 0.6;
}

.xeno-cart-item__header {
  flex: 1;
  min-width: 200px;
}

.xeno-cart-item__header h3 {
  margin: 0 0 0.25rem;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.3;
}

.xeno-cart-item__date {
  font-size: 13px;
  color: var(--xc-text-secondary);
}

.xeno-cart-item__badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.xeno-cart-item__badge--error {
  background: var(--xc-error-bg);
  color: var(--xc-error);
}

.xeno-cart-item__price {
  text-align: right;
  min-width: 120px;
}

.xeno-cart-item__price-amount {
  display: block;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.xeno-cart-item__price-formula {
  display: block;
  font-size: 12px;
  color: var(--xc-text-secondary);
}

.xeno-cart-item__price-tax {
  display: block;
  font-size: 11px;
  color: var(--xc-text-muted);
}

.xeno-cart-item__warning {
  width: 100%;
  font-size: 13px;
  color: var(--xc-warning);
  background: var(--xc-warning-bg);
  padding: 0.5rem 0.75rem;
  border-radius: var(--xc-radius);
}

.xeno-cart-item__remove {
  background: none;
  border: none;
  color: var(--xc-text-muted);
  cursor: pointer;
  font-size: 13px;
  padding: 0.25rem 0;
  transition: color var(--xc-transition);
}

.xeno-cart-item__remove:hover {
  color: var(--xc-error);
}

/* ======================================================================== */
/* Gesamtsumme                                                               */
/* ======================================================================== */

.xeno-cart-total {
  background: var(--xc-surface);
  border-radius: var(--xc-radius-lg);
  box-shadow: var(--xc-shadow);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.xeno-cart-total__row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  font-size: 14px;
  color: var(--xc-text-secondary);
}

.xeno-cart-total__row--gross {
  font-size: 18px;
  font-weight: 700;
  color: var(--xc-text);
  border-top: 2px solid var(--xc-text);
  margin-top: 0.5rem;
  padding-top: 1rem;
}

/* ======================================================================== */
/* Formular-Styling                                                          */
/* ======================================================================== */

.xeno-cart-form {
  background: var(--xc-surface);
  border-radius: var(--xc-radius-lg);
  box-shadow: var(--xc-shadow);
  padding: 2rem;
  margin-bottom: 2rem;
}

.xeno-cart-form__title {
  margin: 0 0 0.25rem;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.xeno-cart-form__subtitle {
  margin: 0 0 2rem;
  font-size: 14px;
  color: var(--xc-text-secondary);
  line-height: 1.5;
}

.xeno-cart-form__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.25rem;
}

@media (max-width: 600px) {
  .xeno-cart-form__grid {
    grid-template-columns: 1fr;
  }
}

.xeno-cart-field {
  grid-column: span 2;
}

.xeno-cart-field--half {
  grid-column: span 1;
}

@media (max-width: 600px) {
  .xeno-cart-field--half {
    grid-column: span 1;
  }
}

.xeno-cart-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--xc-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.375rem;
}

.xeno-cart-required {
  color: var(--xc-error);
}

.xeno-cart-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 15px;
  font-family: var(--xc-font);
  border: 1.5px solid var(--xc-border);
  border-radius: var(--xc-radius);
  background: var(--xc-surface);
  color: var(--xc-text);
  transition: border-color var(--xc-transition), box-shadow var(--xc-transition);
  outline: none;
  -webkit-appearance: none;
}

.xeno-cart-input:focus {
  border-color: var(--xc-border-focus);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.06);
}

.xeno-cart-input--error {
  border-color: var(--xc-error);
  box-shadow: 0 0 0 3px rgba(222, 53, 11, 0.1);
}

.xeno-cart-textarea {
  min-height: 100px;
  resize: vertical;
}

select.xeno-cart-input {
  cursor: pointer;
  padding-right: 2.5rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
}

/* ======================================================================== */
/* Checkboxen                                                                */
/* ======================================================================== */

.xeno-cart-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 14px;
  color: var(--xc-text);
  cursor: pointer;
  padding: 0.5rem 0;
  line-height: 1.4;
}

.xeno-cart-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 1px;
  accent-color: var(--xc-accent);
  cursor: pointer;
  flex-shrink: 0;
}

.xeno-cart-checkbox a {
  color: var(--xc-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.xeno-cart-checkbox--error {
  color: var(--xc-error);
}

/* ======================================================================== */
/* Teilnehmer                                                                */
/* ======================================================================== */

.xeno-cart-participants {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.xeno-cart-participant {
  background: var(--xc-bg);
  border: 1.5px solid var(--xc-border);
  border-radius: var(--xc-radius);
  padding: 1rem 1.25rem;
  transition: border-color var(--xc-transition);
}

.xeno-cart-participant:hover {
  border-color: var(--xc-text-muted);
}

.xeno-cart-participant__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.xeno-cart-participant__name {
  font-weight: 600;
  font-size: 15px;
}

.xeno-cart-participant__remove {
  background: none;
  border: none;
  font-size: 16px;
  color: var(--xc-text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--xc-transition);
}

.xeno-cart-participant__remove:hover {
  background: var(--xc-error-bg);
  color: var(--xc-error);
}

.xeno-cart-participant__details {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.25rem;
  font-size: 13px;
  color: var(--xc-text-secondary);
}

.xeno-cart-participant__type {
  background: var(--xc-surface);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.xeno-cart-participant-form {
  margin-top: 1rem;
  padding-top: 1.5rem;
  border-top: 1.5px solid var(--xc-border);
}

.xeno-cart-participant-form__actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
  justify-content: flex-end;
}

.xeno-cart-add-participant {
  margin-top: 0.5rem;
}

/* ======================================================================== */
/* Formular-Bloecke                                                          */
/* ======================================================================== */

.xeno-cart-form-block {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--xc-border);
}

.xeno-cart-form-block:last-child {
  border-bottom: none;
}

.xeno-cart-form-block h3 {
  margin: 0 0 0.25rem;
  font-size: 16px;
  font-weight: 600;
}

.xeno-cart-form__for {
  font-size: 13px;
  color: var(--xc-text-muted);
  margin: 0 0 1rem;
}

/* ======================================================================== */
/* Zahlungsmethoden                                                          */
/* ======================================================================== */

.xeno-cart-payment-methods {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 2rem;
}

.xeno-cart-payment {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border: 1.5px solid var(--xc-border);
  border-radius: var(--xc-radius);
  cursor: pointer;
  transition: all var(--xc-transition);
}

.xeno-cart-payment:hover {
  border-color: var(--xc-text-muted);
}

.xeno-cart-payment--selected {
  border-color: var(--xc-accent);
  box-shadow: 0 0 0 1px var(--xc-accent);
}

.xeno-cart-payment input[type="radio"] {
  accent-color: var(--xc-accent);
  width: 18px;
  height: 18px;
}

.xeno-cart-payment__name {
  font-size: 15px;
  font-weight: 500;
}

/* ======================================================================== */
/* Rechnungsadresse                                                          */
/* ======================================================================== */

.xeno-cart-billing {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--xc-border);
}

.xeno-cart-billing h3 {
  margin: 0 0 0.75rem;
  font-size: 16px;
  font-weight: 600;
}

.xeno-cart-billing__fields {
  margin-top: 1rem;
}

/* ======================================================================== */
/* Rechtliches                                                               */
/* ======================================================================== */

.xeno-cart-legal {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--xc-border);
}

/* ======================================================================== */
/* Zusammenfassung                                                           */
/* ======================================================================== */

.xeno-cart-summary__section {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--xc-border);
}

.xeno-cart-summary__section:last-child {
  border-bottom: none;
}

.xeno-cart-summary__section h3 {
  margin: 0 0 0.5rem;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--xc-text-muted);
}

.xeno-cart-summary__section p {
  margin: 0.125rem 0;
  font-size: 15px;
}

.xeno-cart-summary__section ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.xeno-cart-summary__section li {
  padding: 0.25rem 0;
  font-size: 14px;
  color: var(--xc-text-secondary);
}

.xeno-cart-summary__item {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  font-size: 15px;
}

.xeno-cart-summary__total {
  display: flex;
  justify-content: space-between;
  padding: 1.25rem 0 0;
  margin-top: 0.5rem;
  border-top: 2px solid var(--xc-text);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ======================================================================== */
/* Buttons                                                                   */
/* ======================================================================== */

.xeno-cart-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--xc-font);
  border: none;
  border-radius: var(--xc-radius);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--xc-transition);
  letter-spacing: 0.01em;
  line-height: 1;
}

.xeno-cart-btn--primary {
  background: var(--xc-accent);
  color: var(--xc-accent-text);
}

.xeno-cart-btn--primary:hover {
  background: var(--xc-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.xeno-cart-btn--primary:active {
  transform: translateY(0);
}

.xeno-cart-btn--primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.xeno-cart-btn--secondary {
  background: transparent;
  color: var(--xc-text-secondary);
  border: 1.5px solid var(--xc-border);
}

.xeno-cart-btn--secondary:hover {
  border-color: var(--xc-text-muted);
  color: var(--xc-text);
}

.xeno-cart-btn--outline {
  background: transparent;
  color: var(--xc-accent);
  border: 1.5px dashed var(--xc-border);
  width: 100%;
  padding: 1rem;
}

.xeno-cart-btn--outline:hover {
  border-color: var(--xc-accent);
  background: rgba(0, 0, 0, 0.02);
}

.xeno-cart-btn--submit {
  padding: 1rem 3rem;
  font-size: 16px;
}

/* ======================================================================== */
/* Navigation Actions                                                        */
/* ======================================================================== */

.xeno-cart-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
}

@media (max-width: 480px) {
  .xeno-cart-actions {
    flex-direction: column-reverse;
  }
  .xeno-cart-actions .xeno-cart-btn {
    width: 100%;
  }
}

/* ======================================================================== */
/* Leerer Warenkorb                                                          */
/* ======================================================================== */

.xeno-cart-empty {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--xc-surface);
  border-radius: var(--xc-radius-lg);
  box-shadow: var(--xc-shadow);
}

.xeno-cart-empty__icon {
  font-size: 48px;
  margin-bottom: 1rem;
  opacity: 0.3;
}

.xeno-cart-empty h2 {
  margin: 0 0 1.5rem;
  font-size: 20px;
  font-weight: 600;
  color: var(--xc-text-secondary);
}

/* ======================================================================== */
/* Erfolgs-Seite                                                             */
/* ======================================================================== */

.xeno-cart-success {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--xc-surface);
  border-radius: var(--xc-radius-lg);
  box-shadow: var(--xc-shadow);
  animation: xcFadeIn 0.5s ease-out;
}

.xeno-cart-success__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--xc-success-bg);
  color: var(--xc-success);
  font-size: 32px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  animation: xcScaleIn 0.4s ease-out 0.1s both;
}

@keyframes xcScaleIn {
  from { transform: scale(0.5); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.xeno-cart-success h2 {
  margin: 0 0 0.75rem;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.xeno-cart-success__ref {
  font-size: 15px;
  color: var(--xc-text-secondary);
  margin-bottom: 0.5rem;
}

.xeno-cart-success p {
  font-size: 14px;
  color: var(--xc-text-secondary);
  margin-bottom: 2rem;
}

/* ======================================================================== */
/* Fehler + Ladeindikator                                                    */
/* ======================================================================== */

.xeno-cart-error {
  background: var(--xc-error-bg);
  color: var(--xc-error);
  padding: 1rem 1.25rem;
  border-radius: var(--xc-radius);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 1.5rem;
  animation: xcFadeIn 0.2s ease-out;
}

.xeno-cart-loader {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 6rem 0;
}

.xeno-cart-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--xc-border);
  border-top-color: var(--xc-accent);
  border-radius: 50%;
  animation: xcSpin 0.7s linear infinite;
}

@keyframes xcSpin {
  to { transform: rotate(360deg); }
}

.xeno-cart-loading {
  text-align: center;
  padding: 3rem;
  color: var(--xc-text-muted);
  font-size: 14px;
}

/* ======================================================================== */
/* "In den Warenkorb" Button (auf Termin-Detail-Seiten)                     */
/* ======================================================================== */

.xeno-cart-add {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--xc-accent);
  color: var(--xc-accent-text);
  border: none;
  border-radius: var(--xc-radius);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--xc-font);
  cursor: pointer;
  transition: all var(--xc-transition);
}

.xeno-cart-add:hover {
  background: var(--xc-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.xeno-cart-add--added {
  background: var(--xc-success) !important;
}

/* ======================================================================== */
/* Cart-Badge (Zaehler im Header)                                            */
/* ======================================================================== */

.xeno-cart-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 100px;
  background: var(--xc-accent);
  color: var(--xc-accent-text);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
}