/* ==========================================================================
   Schatz Elektrotechnik – Formulare (Kontakt und Anfrage)
   ========================================================================== */

.form {
  --form-gap: 20px;
  --form-field-padding-block: 8.5px;
  --form-field-padding-inline: 10px;
  --form-field-bg: var(--white);
  --form-field-color: var(--black);
  --form-field-border-color: color-mix(in oklch, var(--primary) 30%, transparent);
  --form-field-border-color-focus: var(--primary);
  --form-field-radius: var(--radius);
  --form-label-color: var(--neutral-dark);
  --form-placeholder-color: var(--neutral-semi-light);
  --form-danger: var(--danger);
  --form-success: var(--success-semi-dark);
  --form-field-height: calc(var(--form-field-padding-block) * 2 + 2px + 1lh);
  color: var(--black);
  accent-color: var(--primary);
}

.form__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--form-gap);
}

.form__field {
  grid-column: 1 / -1;
  position: relative;
  margin-block-end: var(--form-gap);
}

.form__spacer {
  grid-column: 1 / -1;
  block-size: 8px;
}

@media (width >= 768px) {
  .form__field--3 {
    grid-column: span 3;
  }
  .form__field--4 {
    grid-column: span 4;
  }
  .form__field--6 {
    grid-column: span 6;
  }
  .form__field--8 {
    grid-column: span 8;
  }
  .form__field--9 {
    grid-column: span 9;
  }
}

.form__label {
  display: block;
  margin-block-end: 9px;
  color: var(--form-label-color);
  font-size: var(--text-m);
}

.form__required {
  color: var(--form-danger);
  font-weight: 700;
}

.form__control {
  display: block;
  inline-size: 100%;
  block-size: var(--form-field-height);
  padding: var(--form-field-padding-block) var(--form-field-padding-inline);
  background-color: var(--form-field-bg);
  color: var(--form-field-color);
  font-size: var(--text-m);
  line-height: var(--text-line-height);
  border: 1px solid var(--form-field-border-color);
  border-radius: var(--form-field-radius);
  appearance: none;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

.form__control::placeholder {
  color: var(--form-placeholder-color);
  opacity: 1;
}

.form__control:focus-visible {
  border-color: var(--form-field-border-color-focus);
}

.form__control--textarea {
  display: inline-block;
  block-size: auto;
  min-block-size: var(--form-field-height);
  resize: vertical;
  field-sizing: content;
}

/* Auswahlfeld mit eigenem Pfeil */
.form__select {
  position: relative;
}

.form__select .form__control {
  padding-inline-end: 2.25rem;
  cursor: default;
}

.form__select-arrow {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-end: 10px;
  inline-size: 12px;
  block-size: 6px;
  background: currentColor;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  translate: 0 -50%;
  pointer-events: none;
}

/* Checkbox */
.form__check {
  display: flex;
  align-items: flex-start;
  gap: 6px;
}

.form__checkbox {
  flex-shrink: 0;
  display: grid;
  place-content: center;
  inline-size: 1lh;
  block-size: 1lh;
  margin: 0;
  background: var(--form-field-bg);
  border: 1px solid var(--form-field-border-color);
  border-radius: 4px;
  appearance: none;
  cursor: pointer;
}

.form__checkbox::after {
  content: "";
  inline-size: 0.35lh;
  block-size: 0.6lh;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  rotate: 45deg;
  translate: 0 -10%;
  opacity: 0;
}

.form__checkbox:checked {
  background: var(--primary);
  border-color: var(--primary);
}

.form__checkbox:checked::after {
  opacity: 1;
}

.form__label--check {
  margin-block-end: 0;
}

.form__link {
  color: inherit !important;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Hilfe- und Fehlertexte */
.form__help,
.form__error {
  margin-block-start: 7.5px;
  font-size: var(--text-s);
}

.form__error {
  display: none;
  color: var(--form-danger);
}

.form__field--invalid .form__control,
.form__field--invalid .form__checkbox {
  border-color: var(--form-danger);
}

.form__field--invalid .form__error {
  display: block;
}

/* Honeypot gegen Spam (für Menschen unsichtbar) */
.form__honeypot {
  position: absolute !important;
  inset-inline-start: -9999em !important;
  block-size: 0 !important;
  overflow: hidden;
}

.form__submit {
  --btn-width: 100%;
  cursor: pointer;
}

.form__submit[disabled] {
  opacity: 0.6;
  cursor: progress;
}

.form__status {
  grid-column: 1 / -1;
  padding: var(--space-xs) var(--space-s);
  border: 1px solid currentColor;
  border-radius: var(--radius);
  font-weight: 600;
  /* sanft einblenden, statt plötzlich zu erscheinen (beim Entfernen von [hidden]) */
  transition:
    opacity 200ms var(--ease-out),
    transform 200ms var(--ease-out);
  @starting-style {
    opacity: 0;
    transform: translateY(4px);
  }
  @media (prefers-reduced-motion: reduce) {
    @starting-style {
      transform: none;
    }
  }
}

.form__status--success {
  color: var(--form-success);
}

.form__status--error {
  color: var(--form-danger);
}

/* ---------- Anfrage in Schritten (Thema → Kontakt → Objekt) ---------- */
@keyframes form-step-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
}

.form-progress {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin: 0 0 var(--space-m);
  padding: 0;
  list-style: none;
}

.form-progress__item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-block-start: 0.75rem;
  border-block-start: 3px solid color-mix(in oklch, var(--primary) 30%, transparent);
  color: var(--text-dark-muted);
  font-size: var(--text-s);
  font-weight: 600;
  transition:
    border-color 200ms ease-out,
    color 200ms ease-out;
}

.form-progress__num {
  display: grid;
  place-items: center;
  flex: none;
  inline-size: 1.75rem;
  block-size: 1.75rem;
  border-radius: 50%;
  background: color-mix(in oklch, var(--primary) 12%, transparent);
  box-shadow: inset 0 0 0 1.5px color-mix(in oklch, var(--primary) 45%, transparent);
  color: light-dark(oklch(0.4 0.08 217.238849582), var(--primary-text));
  font-size: var(--text-xs);
  transition:
    background-color 200ms ease-out,
    color 200ms ease-out;
}

.form-progress__item[aria-current],
.form-progress__item[data-done] {
  border-color: var(--primary);
  color: var(--text-dark);
  .form-progress__num {
    background: var(--primary);
    color: #fff;
  }
}

@media (width < 480px) {
  .form-progress__label {
    display: none;
  }
  .form-progress__item[aria-current] .form-progress__label {
    display: inline;
  }
}

.form-step {
  animation: form-step-in 200ms ease-out;
  &[hidden] {
    display: none;
  }
}

.form-step__title {
  grid-column: 1 / -1;
  margin: 0 0 var(--space-s);
  color: var(--text-dark);
  font-size: var(--h3);
  outline: none;
}

.form-tiles {
  min-inline-size: 0;
  margin: 0;
  padding: 0;
  border: 0;
  legend {
    padding: 0;
  }
}

.form-tiles--steps legend {
  position: absolute;
  clip-path: inset(50%);
}

.form-tiles__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  @media (width >= 75rem) {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.form-tile {
  position: relative;
  display: grid;
  align-content: start;
  gap: 0.25rem;
  padding: 0.9rem 1rem;
  border: 1px solid color-mix(in oklch, var(--primary) 25%, transparent);
  border-radius: calc(var(--radius) - 4px);
  background: light-dark(#fff, oklch(0.2 0.012 243.503139019));
  cursor: pointer;
  transition:
    border-color 150ms ease-out,
    background-color 150ms ease-out,
    transform 120ms ease-out;
  @media (hover: hover) and (pointer: fine) {
    &:hover {
      border-color: var(--primary);
    }
  }
  &:active {
    transform: scale(0.98);
  }
  &:has(:checked) {
    border-color: var(--primary);
    background: color-mix(in oklch, var(--primary) 8%, light-dark(#fff, oklch(0.2 0.012 243.503139019)));
  }
  &:has(:focus-visible) {
    outline: var(--focus-width) solid var(--focus-color);
    outline-offset: var(--focus-offset);
  }
  .form__field--invalid & {
    border-color: var(--form-danger);
  }
}

.form-tile__input {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.form-tile__check {
  position: absolute;
  inset-block-start: -0.5rem;
  inset-inline-end: -0.5rem;
  display: grid;
  place-items: center;
  inline-size: 1.25rem;
  block-size: 1.25rem;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  opacity: 0;
  transform: scale(0.6);
  transition:
    opacity 150ms ease-out,
    transform 180ms ease-out;
  svg {
    inline-size: 0.8rem;
    block-size: 0.8rem;
  }
  .form-tile:has(:checked) & {
    opacity: 1;
    transform: none;
  }
}

.form-tile__title {
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.25;
  hyphens: auto;
}

.form-tile__text {
  color: var(--text-dark-muted);
  font-size: var(--text-xs);
  line-height: 1.35;
}

.form__steps-nav {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-start: var(--space-xs);
  > [hidden] {
    display: none;
  }
  .form__next,
  .form__submit {
    --btn-width: auto;
    margin-inline-start: auto;
  }
}

.form--steps .form__status {
  margin-block-start: var(--space-s);
}

.form--steps .form__control--textarea {
  min-block-size: 7.5rem;
}

@media (prefers-reduced-motion: reduce) {
  .form-step {
    animation: none;
  }
  .form-tile,
  .form-tile__check {
    transition: none;
  }
  .form-tile:active {
    transform: none;
  }
}

/* ---------- Windows-Kontrastmodus: Auswahl und aktueller Schritt nicht nur über Farbe ---------- */
@media (forced-colors: active) {
  .form-tile:has(:checked) {
    outline: 3px solid Highlight;
    outline-offset: -1px;
  }
  .form-tile__check {
    background: Highlight;
    color: HighlightText;
  }
  .form-progress__item[aria-current] {
    border-block-start-color: Highlight;
  }
  .form-progress__item[aria-current] .form-progress__num,
  .form-progress__item[data-done] .form-progress__num {
    background: Highlight;
    color: HighlightText;
    box-shadow: none;
  }
  .form-progress__num {
    border: 1px solid CanvasText;
    box-shadow: none;
  }
  .form__checkbox:checked {
    background: Highlight;
    border-color: Highlight;
  }
  .form__checkbox::after {
    border-color: HighlightText;
  }
}