/* ============================================================
   AP-Digital Onboarding – style.css
   Methodik: BEM | Mobile-first | Dark Theme
   ============================================================ */

/* Stellt sicher, dass das hidden-Attribut immer Vorrang hat,
   auch wenn CSS display-Regeln überschreiben würden. */
[hidden] { display: none !important; }

/* ------------------------------------------------------------
   1. Design-Tokens (CSS Custom Properties)
   ------------------------------------------------------------ */
:root {
  /* Farben */
  --color-bg:          #0a0a0a;
  --color-surface:     #111111;
  --color-surface-2:   #1a1a1a;
  --color-border:      #2a2a2a;
  --color-border-focus:#444444;

  --color-text:        #f0f0f0;
  --color-text-muted:  #888888;
  --color-text-subtle: #555555;

  --color-accent:      #ffffff;
  --color-accent-dim:  rgba(255,255,255,0.08);
  --color-accent-glow: rgba(255,255,255,0.04);

  --color-error:       #ff4444;
  --color-error-bg:    rgba(255,68,68,0.08);
  --color-success:     #22c55e;

  /* Typografie – Inter wird via Google Fonts geladen (siehe index.html) */
  --font-sans: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  2rem;
  --text-4xl:  2.75rem;

  --weight-normal:  400;
  --weight-medium:  500;
  --weight-semi:    600;
  --weight-bold:    700;

  /* Abstände */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Radien */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Schatten */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);

  /* Übergänge */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --content-max: 720px;
  --content-wide: 900px;
}

/* ------------------------------------------------------------
   2. Reset & Basisstile
   ------------------------------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

input, textarea, select, button {
  font-family: inherit;
  font-size: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

img, svg {
  display: block;
  max-width: 100%;
}

ul, ol {
  list-style: none;
}

/* ------------------------------------------------------------
   3. Header
   ------------------------------------------------------------ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  min-height: 72px; /* Logo-Höhe + Breathing Room */
}

.header__logo {
  height: 52px;
  width: auto;
}

/* ------------------------------------------------------------
   4. Fortschrittsanzeige
   ------------------------------------------------------------ */
.progress {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-6) var(--space-6) 0;
}

.progress__bar-wrap {
  height: 2px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  width: 20%; /* Schritt 1 von 5 */
  transition: width var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
}

.progress__steps {
  display: flex;
  justify-content: space-between;
  position: relative;
  gap: var(--space-2);
}

.progress__step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  cursor: default;
}

.progress__step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-border);
  border: 2px solid var(--color-border);
  transition: background-color var(--transition-base),
              border-color var(--transition-base),
              transform var(--transition-base);
  flex-shrink: 0;
}

.progress__step--active .progress__step-dot {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  transform: scale(1.3);
}

.progress__step--done .progress__step-dot {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.progress__step-label {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  text-align: center;
  display: none; /* Mobile: ausblenden */
  transition: color var(--transition-base);
}

.progress__step--active .progress__step-label,
.progress__step--done .progress__step-label {
  color: var(--color-text-muted);
}

/* ------------------------------------------------------------
   5. Hauptbereich
   ------------------------------------------------------------ */
.main {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6) var(--space-16);
}

/* ------------------------------------------------------------
   6. Formular-Schritte
   ------------------------------------------------------------ */
.form__step {
  display: none;
  animation: fadeSlideIn var(--transition-slow) ease both;
}

.form__step--active {
  display: block;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Schritt-Header */
.form__step-header {
  margin-bottom: var(--space-10);
  position: relative;
  padding-top: var(--space-4);
  overflow: hidden;
}

/* Große dekorative Hintergrundnummer */
.form__step-number {
  position: absolute;
  top: -0.15em;
  left: -0.04em;
  font-size: clamp(6rem, 18vw, 10rem);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  opacity: 0.07;
  line-height: 1;
  letter-spacing: -0.05em;
  user-select: none;
  pointer-events: none;
  z-index: 0;
}

.form__step-title {
  position: relative;
  z-index: 1;
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.form__step-desc {
  position: relative;
  z-index: 1;
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: 1.7;
}

/* ------------------------------------------------------------
   7. Fieldset & Felder
   ------------------------------------------------------------ */
.form__fields {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.form__fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  background-color: var(--color-surface);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.form__legend {
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 var(--space-2);
  /* Positioniert legend über dem border */
}

.form__fieldset-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: calc(-1 * var(--space-3));
}

/* Einzelnes Feld */
.form__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Zeilen-Layout */
.form__row {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* ------------------------------------------------------------
   8. Labels & Hints
   ------------------------------------------------------------ */
.form__label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
}

.form__required {
  color: var(--color-text-muted);
  margin-left: var(--space-1);
}

.form__hint {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  line-height: 1.5;
}

.form__error {
  font-size: var(--text-xs);
  color: var(--color-error);
  min-height: 1em;
  display: block;
}

/* ------------------------------------------------------------
   9. Input, Textarea, Select
   ------------------------------------------------------------ */
.form__input,
.form__textarea,
.form__select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: border-color var(--transition-fast),
              background-color var(--transition-fast),
              box-shadow var(--transition-fast);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--color-text-subtle);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  border-color: var(--color-accent);
  background-color: var(--color-surface);
  box-shadow: 0 0 0 3px var(--color-accent-dim);
}

/* Fehlerzustand */
.form__input--error,
.form__textarea--error,
.form__select--error {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
}

.form__input--error:focus,
.form__textarea--error:focus,
.form__select--error:focus {
  box-shadow: 0 0 0 3px rgba(255,68,68,0.15);
}

.form__textarea {
  resize: vertical;
  min-height: 100px;
}

/* Select Wrapper */
.form__select-wrap {
  position: relative;
}

.form__select-wrap::after {
  content: '';
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid var(--color-text-muted);
  pointer-events: none;
}

.form__select {
  padding-right: var(--space-10);
  cursor: pointer;
}

.form__select option {
  background-color: var(--color-surface-2);
  color: var(--color-text);
}

/* ------------------------------------------------------------
   10. Radio-Buttons
   ------------------------------------------------------------ */
.form__radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.form__radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast),
              background-color var(--transition-fast);
}

.form__radio-label:hover {
  border-color: var(--color-border-focus);
  background-color: var(--color-accent-glow);
}

.form__radio {
  display: none;
}

.form__radio-custom {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--color-border-focus);
  flex-shrink: 0;
  position: relative;
  transition: border-color var(--transition-fast);
}

.form__radio-custom::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background-color: var(--color-accent);
  transform: scale(0);
  transition: transform var(--transition-fast);
}

.form__radio:checked + .form__radio-custom {
  border-color: var(--color-accent);
}

.form__radio:checked + .form__radio-custom::after {
  transform: scale(1);
}

.form__radio:checked ~ .form__radio-label,
.form__radio-label:has(.form__radio:checked) {
  border-color: var(--color-accent);
  background-color: var(--color-accent-dim);
}

/* ------------------------------------------------------------
   11. Checkboxen
   ------------------------------------------------------------ */
.form__checkbox-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.form__checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast),
              background-color var(--transition-fast);
}

.form__checkbox-label:hover {
  border-color: var(--color-border-focus);
  background-color: var(--color-accent-glow);
}

.form__checkbox {
  display: none;
}

.form__checkbox-custom {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border-focus);
  flex-shrink: 0;
  position: relative;
  transition: border-color var(--transition-fast),
              background-color var(--transition-fast);
}

.form__checkbox-custom::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border: 2px solid #000;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) scale(0);
  transition: transform var(--transition-fast);
}

.form__checkbox:checked + .form__checkbox-custom {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.form__checkbox:checked + .form__checkbox-custom::after {
  transform: rotate(45deg) scale(1);
}

.form__checkbox-label:has(.form__checkbox:checked) {
  border-color: var(--color-accent);
  background-color: var(--color-accent-dim);
}

/* ------------------------------------------------------------
   12. Toggle-Switch
   ------------------------------------------------------------ */
.form__toggle-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.form__toggle {
  position: relative;
  display: inline-flex;
  cursor: pointer;
}

.form__toggle-input {
  display: none;
}

.form__toggle-slider {
  width: 44px;
  height: 24px;
  border-radius: var(--radius-full);
  background-color: var(--color-border);
  border: 1px solid var(--color-border-focus);
  position: relative;
  transition: background-color var(--transition-base);
  flex-shrink: 0;
}

.form__toggle-slider::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--color-text-muted);
  top: 3px;
  left: 3px;
  transition: transform var(--transition-base),
              background-color var(--transition-base);
}

.form__toggle-input:checked + .form__toggle-slider {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.form__toggle-input:checked + .form__toggle-slider::after {
  transform: translateX(20px);
  background-color: #000;
}

.form__toggle-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  min-width: 2.5rem;
  transition: color var(--transition-fast);
}

/* ------------------------------------------------------------
   13. File-Upload / Drag & Drop
   ------------------------------------------------------------ */
.form__file-drop {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface-2);
  position: relative;
  transition: border-color var(--transition-base),
              background-color var(--transition-base);
  overflow: hidden;
}

.form__file-drop:hover,
.form__file-drop--dragover {
  border-color: var(--color-accent);
  background-color: var(--color-accent-glow);
}

.form__file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.form__file-drop-inner {
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-align: center;
  pointer-events: none;
}

.form__file-icon {
  width: 40px;
  height: 40px;
  color: var(--color-text-subtle);
}

.form__file-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.form__file-link {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form__file-hint {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
}

.form__file-preview {
  margin-top: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form__file-preview:empty {
  display: none;
}

.form__file-preview-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.form__file-preview-item--removing {
  opacity: 0;
  transform: translateX(-8px);
  pointer-events: none;
}

.form__file-preview-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.form__file-preview-remove {
  background: none;
  border: none;
  color: var(--color-text-subtle);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  line-height: 1;
}

.form__file-preview-remove:hover {
  color: var(--color-error);
}

/* ------------------------------------------------------------
   14. Style-Karten (Schritt 3)
   ------------------------------------------------------------ */
.form__style-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.form__style-card {
  cursor: pointer;
  display: block;
}

.form__style-input {
  display: none;
}

.form__style-card-inner {
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-surface-2);
  transition: border-color var(--transition-base),
              transform var(--transition-fast),
              box-shadow var(--transition-base);
}

.form__style-card:hover .form__style-card-inner {
  border-color: var(--color-border-focus);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.form__style-input:checked + .form__style-card-inner {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent), var(--shadow-md);
}

/* Vorschau-Bereich der Karten */
.form__style-preview {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4);
}

/* Minimalistisch */
.form__style-preview--minimal {
  flex-direction: column;
  align-items: flex-start;
  background-color: #f5f5f5;
}

.sp-line {
  height: 2px;
  background-color: #1a1a1a;
  border-radius: 1px;
  width: 100%;
}

.sp-line--thick { height: 4px; }
.sp-line--short { width: 60%; }

/* Bold */
.form__style-preview--bold {
  background-color: #0a0a0a;
  flex-direction: column;
  gap: 0;
}

.sp-block {
  width: 100%;
  flex: 1;
}

.sp-block--dark { background-color: #111; }
.sp-block--accent { background-color: #fff; }

/* Elegant */
.form__style-preview--elegant {
  background-color: #faf8f5;
}

.sp-serif {
  font-family: Georgia, serif;
  font-size: 2.5rem;
  color: #2a2a2a;
  letter-spacing: -0.05em;
  line-height: 1;
}

/* Kreativ */
.form__style-preview--creative {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
}

.sp-circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: rgba(255,255,255,0.3);
  border: 3px solid rgba(255,255,255,0.6);
}

.sp-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: #fff;
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
}

/* Corporate */
.form__style-preview--corporate {
  background-color: #f0f4f8;
}

.sp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
  width: 70%;
}

.sp-cell {
  height: 20px;
  background-color: #c8d6e5;
  border-radius: 3px;
}

/* Dark Mode */
.form__style-preview--dark {
  background-color: #05050d;
  position: relative;
  overflow: hidden;
}

.sp-glow {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,0.8) 0%, transparent 70%);
}

/* Kartentext */
.form__style-name {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  color: var(--color-text);
  padding: var(--space-3) var(--space-4) var(--space-1);
}

.form__style-desc {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: 0 var(--space-4) var(--space-4);
  line-height: 1.4;
}

/* ------------------------------------------------------------
   15. Referenz-Einträge (Schritt 3)
   ------------------------------------------------------------ */
.form__reference-entry {
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-2);
  position: relative;
  animation: fadeSlideIn var(--transition-base) ease both;
}

.form__reference-entry + .form__reference-entry {
  margin-top: var(--space-3);
}

.form__row--ref {
  gap: var(--space-4);
}

.form__btn-add {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: none;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  cursor: pointer;
  width: 100%;
  justify-content: center;
  transition: border-color var(--transition-fast),
              color var(--transition-fast),
              background-color var(--transition-fast),
              transform 200ms ease;
  margin-top: var(--space-3);
}

.form__btn-add:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
  background-color: var(--color-accent-glow);
  transform: scale(1.03);
}

.form__btn-add svg {
  width: 16px;
  height: 16px;
}

/* ------------------------------------------------------------
   16. Navigation (Weiter / Zurück)
   ------------------------------------------------------------ */
.form__nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.form__nav-spacer {
  flex: 1;
}

/* ------------------------------------------------------------
   17. Buttons
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              transform 200ms ease,
              box-shadow var(--transition-fast);
  white-space: nowrap;
  text-align: center;
  user-select: none;
}

.btn:hover {
  transform: scale(1.03);
}

.btn:active {
  transform: scale(0.97);
}

.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Primär */
.btn--primary {
  background-color: var(--color-accent);
  color: #000;
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background-color: #e0e0e0;
  box-shadow: 0 0 0 3px var(--color-accent-dim);
}

/* Ghost */
.btn--ghost {
  background-color: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-border-focus);
  color: var(--color-text);
  background-color: var(--color-accent-glow);
}

/* Groß */
.btn--large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

/* ------------------------------------------------------------
   18. Submit-Bereich (Schritt 5)
   ------------------------------------------------------------ */
.form__submit-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  align-items: flex-start;
}

.form__submit-info {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-2);
}

.form__submit-icon {
  width: 20px;
  height: 20px;
  color: var(--color-success);
  flex-shrink: 0;
  margin-top: 2px;
}

.form__submit-info p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.btn--submit {
  width: 100%;
  justify-content: center;
}

/* ------------------------------------------------------------
   19. Erfolgsmeldung
   Standardmäßig komplett aus dem DOM-Flow entfernt.
   Wird nur nach erfolgreichem Absenden per JS eingeblendet
   (hidden-Attribut entfernen), niemals beim Scrollen sichtbar.
   ------------------------------------------------------------ */
.form__success {
  display: none; /* Standard: komplett versteckt */
}

.form__success:not([hidden]) {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  animation: fadeSlideIn var(--transition-slow) ease both;
}

.form__success-inner {
  text-align: center;
  max-width: 400px;
}

.form__success-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
  border-radius: 50%;
  background-color: rgba(34,197,94,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.form__success-icon svg {
  width: 40px;
  height: 40px;
  color: var(--color-success);
}

.form__success-title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.form__success-text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ------------------------------------------------------------
   20. Footer
   ------------------------------------------------------------ */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6);
  text-align: center;
}

.footer__text {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
}

/* ------------------------------------------------------------
   21. Bedingte Felder (show/hide)
   ------------------------------------------------------------ */
.form__field--conditional {
  overflow: hidden;
  transition: opacity var(--transition-base), max-height var(--transition-base);
}

.form__field--conditional[hidden] {
  display: none;
}

/* ------------------------------------------------------------
   22. Tablet-Breakpoint: >= 600px
   ------------------------------------------------------------ */
@media (min-width: 600px) {
  .form__row--2 {
    flex-direction: row;
  }

  .form__row--2 > .form__field {
    flex: 1;
  }

  .form__row--ref {
    flex-direction: row;
  }

  .form__row--ref > .form__field {
    flex: 1;
  }

  .progress__step-label {
    display: block;
  }

  .form__style-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .form__checkbox-group {
    grid-template-columns: repeat(2, 1fr);
  }

  .form__submit-section {
    flex-direction: row;
    align-items: center;
  }

  .btn--submit {
    width: auto;
    flex-shrink: 0;
  }
}

/* ------------------------------------------------------------
   23. Desktop-Breakpoint: >= 900px
   ------------------------------------------------------------ */
@media (min-width: 900px) {
  .form__step-title {
    font-size: var(--text-4xl);
  }

  .form__fieldset {
    padding: var(--space-8);
  }

  .form__style-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ------------------------------------------------------------
   24. Submit Loading-State & Fehler-Banner
   ------------------------------------------------------------ */

/* Spinner-Animation im Submit-Button */
@keyframes drehen {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.btn__spinner {
  animation: drehen 0.8s linear infinite;
  flex-shrink: 0;
}

/* Fehler-Banner unter dem Formular */
.form__error-banner {
  background-color: var(--color-error-bg);
  border: 1px solid var(--color-error);
  border-radius: var(--radius-md);
  color: var(--color-error);
  font-size: var(--text-sm);
  line-height: 1.6;
  padding: var(--space-4);
  margin-top: var(--space-6);
  animation: fadeSlideIn var(--transition-base) ease both;
}

.form__error-banner[hidden] {
  display: none;
}

/* Deaktivierter Submit-Button während des Ladens */
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* ------------------------------------------------------------
   25. Reduzierende Bewegung (Barrierefreiheit)
   ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}