/* Stepper (Optik nach shadcn "Onboarding9") -- service.html und zahlweise.html */
.stepper { position: relative; width: 100%; max-width: 640px; margin: 0 auto; }
.stepper [hidden] { display: none !important; }

.stepper__header { text-align: center; margin-bottom: var(--sp-8); }
.stepper__badge {
  display: inline-block; margin-bottom: var(--sp-4);
  font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 4px 10px; border-radius: var(--r-full);
  background: rgba(0,59,74,0.08); color: var(--c-petrol); border: 1px solid rgba(0,59,74,0.15);
}
.stepper__heading {
  font-family: var(--f-display); font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 800; text-transform: uppercase; line-height: 1.05; color: var(--c-void);
}

/* Step indicators */
.stepper__indicators { list-style: none; padding: 0; margin: 0 0 var(--sp-8); display: flex; justify-content: center; gap: var(--sp-2); }
.stepper__indicator {
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-md); border: 2px solid rgba(107,114,128,0.3);
  background: var(--c-white); color: var(--c-ash);
  font-family: var(--f-mono); font-size: 0.875rem; font-weight: 500;
  transition: transform var(--t-base) var(--ease-out), background var(--t-base), border-color var(--t-base), color var(--t-base);
}
.stepper__indicator.is-current { border-color: var(--c-petrol); color: var(--c-petrol); transform: scale(1.1); }
.stepper__indicator.is-complete { border-color: var(--c-petrol); background: var(--c-petrol); color: var(--c-white); }
.stepper__indicator-check { display: none; }
.stepper__indicator.is-complete .stepper__indicator-check { display: block; }
.stepper__indicator.is-complete .stepper__indicator-num { display: none; }

/* Card + panels */
.stepper__card {
  position: relative; min-height: 200px;
  background: var(--c-white); border: 1px solid var(--c-smoke); border-radius: var(--r-xl);
  padding: var(--sp-6);
}
@media (min-width: 768px) { .stepper__card { padding: var(--sp-10); } }
.stepper__panel { animation: stepper-in var(--t-slow) var(--ease-out); }
@keyframes stepper-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.stepper__title {
  font-family: var(--f-display); font-size: clamp(1.25rem, 2.6vw, 1.6rem);
  font-weight: 800; text-transform: uppercase; color: var(--c-void); margin-bottom: var(--sp-2);
}
.stepper__desc { color: var(--c-ash); font-size: 0.9375rem; line-height: 1.6; margin-bottom: var(--sp-6); }

/* Choice cards (radio) */
.stepper__choices { display: grid; gap: var(--sp-3); }
@media (min-width: 640px) { .stepper__choices { grid-template-columns: 1fr 1fr; } }
.stepper__choice { position: relative; display: block; cursor: pointer; }
.stepper__choice input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.stepper__choice-body {
  display: flex; flex-direction: column; gap: var(--sp-2); height: 100%;
  padding: var(--sp-5); border: 2px solid var(--c-smoke); border-radius: var(--r-lg); background: var(--c-snow);
  transition: border-color var(--t-fast), background var(--t-fast), box-shadow var(--t-fast);
}
.stepper__choice:hover .stepper__choice-body { border-color: var(--c-mist); }
.stepper__choice input:checked + .stepper__choice-body { border-color: var(--c-petrol); background: var(--c-white); box-shadow: var(--sh-sm); }
.stepper__choice input:focus-visible + .stepper__choice-body { outline: 2px solid var(--c-ember); outline-offset: 3px; }
.stepper__choice-badge {
  align-self: flex-start; font-family: var(--f-mono); font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 3px 9px; border-radius: var(--r-full); background: rgba(0,59,74,0.08); color: var(--c-petrol);
}
.stepper__choice-badge.is-sales { background: var(--c-ember-dim); color: var(--c-ember-700); }
.stepper__choice-title { font-family: var(--f-display); font-size: 1.05rem; font-weight: 800; text-transform: uppercase; color: var(--c-void); }
.stepper__choice-desc { font-size: 0.875rem; color: var(--c-ash); line-height: 1.55; }

/* Fields */
.stepper__grid { display: grid; gap: 0 var(--sp-4); }
@media (min-width: 640px) { .stepper__grid { grid-template-columns: 1fr 1fr; } }
.stepper__field { margin-bottom: var(--sp-5); }
.stepper__label {
  display: block; margin-bottom: var(--sp-2);
  font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--c-ash);
}
.stepper__input {
  width: 100%; padding: 13px var(--sp-4);
  font-family: var(--f-body); font-size: 1rem; color: var(--c-void); background: var(--c-white);
  border: 1.5px solid var(--c-smoke); border-radius: var(--r-md);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
textarea.stepper__input { min-height: 140px; resize: vertical; line-height: 1.5; }
.stepper__input:focus { border-color: var(--c-petrol); outline: none; }
.stepper__input:focus-visible { outline: 2px solid var(--c-petrol); outline-offset: 2px; }
.stepper__input[aria-invalid="true"] { border-color: var(--c-danger); }
.stepper__input--code { max-width: 260px; font-family: var(--f-mono); font-size: 1.5rem; letter-spacing: 0.4em; text-align: center; }
.stepper__field-error { margin-top: var(--sp-2); font-size: 0.8125rem; color: var(--c-danger); }
.stepper__hint { margin-top: var(--sp-2); font-size: 0.8125rem; color: var(--c-ash); line-height: 1.5; }
.stepper__status { display: flex; align-items: center; gap: var(--sp-2); margin-top: var(--sp-3); font-size: 0.875rem; color: var(--c-ash); }
.stepper__status.is-known { color: var(--c-success); font-weight: 600; }
.stepper__status .check-anim { width: 28px; height: 28px; flex-shrink: 0; }
.stepper__input--iban { font-family: var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.stepper__field--spaced { margin-top: var(--sp-5); }
.stepper__check {
  display: flex; align-items: flex-start; gap: var(--sp-3); cursor: pointer;
  padding: var(--sp-4); border: 1px solid var(--c-smoke); border-radius: var(--r-md); background: var(--c-snow);
  font-size: 0.8125rem; line-height: 1.55; color: var(--c-void);
}
.stepper__check input { flex-shrink: 0; width: 20px; height: 20px; margin-top: 2px; accent-color: var(--c-petrol); cursor: pointer; }
.stepper__check input:focus-visible { outline: 2px solid var(--c-petrol); outline-offset: 2px; }
.stepper__check:has(input[aria-invalid="true"]) { border-color: var(--c-danger); }
.stepper__hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.stepper__link-btn {
  background: none; border: none; padding: 0; cursor: pointer;
  font-family: var(--f-body); font-size: 0.875rem; color: var(--c-petrol); text-decoration: underline;
}
.stepper__link-btn:disabled { color: var(--c-mist); text-decoration: none; cursor: default; }

/* Payment mode rows */
.stepper__mode {
  display: flex; justify-content: space-between; align-items: center; gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5); margin-bottom: var(--sp-3);
  border: 1px solid var(--c-smoke); border-radius: var(--r-lg); background: var(--c-snow);
}
.stepper__mode.is-target { border: 2px solid var(--c-petrol); background: var(--c-white); }
.stepper__mode-label { font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--c-ash); }
.stepper__mode-value { font-family: var(--f-display); font-size: 1.1rem; font-weight: 800; text-transform: uppercase; color: var(--c-void); text-align: right; }

/* Messages */
.stepper__error, .stepper__note {
  margin-top: var(--sp-5); padding: var(--sp-3) var(--sp-4); border-radius: var(--r-md);
  font-size: 0.875rem; line-height: 1.5;
}
.stepper__error { background: rgba(192,57,43,0.08); color: var(--c-danger-dark); }
.stepper__note { background: var(--c-snow); color: var(--c-void); }
.stepper__note a { color: var(--c-petrol); text-decoration: underline; }
.stepper__footnote { margin-top: var(--sp-6); text-align: center; font-size: 0.875rem; color: var(--c-ash); }
.stepper__footnote a { color: var(--c-petrol); text-decoration: underline; }

/* Navigation */
.stepper__nav { display: flex; justify-content: center; gap: var(--sp-3); margin-top: var(--sp-8); }
.stepper__nav .btn:disabled { opacity: 0.6; cursor: wait; transform: none; box-shadow: none; }
@media (max-width: 639px) {
  .stepper__nav .btn { flex: 1; padding-left: var(--sp-4); padding-right: var(--sp-4); }
}
.stepper__spinner {
  display: none; width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid currentColor; border-right-color: transparent;
  animation: stepper-spin 0.7s linear infinite;
}
.stepper__next.is-busy .stepper__spinner { display: inline-block; }
@keyframes stepper-spin { to { transform: rotate(360deg); } }

/* Done state */
.stepper__done { text-align: center; padding: var(--sp-6) 0; }
.stepper__done:focus { outline: none; }
.stepper__done .check-anim { display: block; width: 72px; height: 72px; margin: 0 auto var(--sp-5); }
.stepper__done-title {
  font-family: var(--f-display); font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800; text-transform: uppercase; color: var(--c-void); margin-bottom: var(--sp-3);
}
.stepper__done-text { max-width: 44ch; margin: 0 auto; color: var(--c-ash); line-height: 1.6; }

/* Animated check (customer recognised / done) */
.check-anim__circle {
  fill: none; stroke: var(--c-success-bright); stroke-width: 3;
  stroke-dasharray: 151; stroke-dashoffset: 151;
  animation: check-draw 0.6s var(--ease-out) forwards;
}
.check-anim__tick {
  fill: none; stroke: var(--c-success-bright); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 36; stroke-dashoffset: 36;
  animation: check-draw 0.4s 0.45s var(--ease-out) forwards;
}
@keyframes check-draw { to { stroke-dashoffset: 0; } }

.stepper__sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

@media (prefers-reduced-motion: reduce) {
  .stepper__panel { animation: none; }
  .stepper__indicator.is-current { transform: none; }
  .check-anim__circle, .check-anim__tick { animation: none; stroke-dashoffset: 0; }
}