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

/*Variablen*/
:root {
  --teal:       #26ffa6;
  --teal-deep:  #13bf69;
  --charcoal:   #333030;
  --near-black: #1a1816;
  --gray-mid:   #9e9999;
  --white:      #fafaf8;
  --error:      #ff5050;
  --radius:     4px;
  --bar:        40px;
}

/*Basis*/
html, body { height: 100%; }

body {
  background: var(--near-black);
  color: var(--white);
  font-family: "Poppins", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

/*Site Header*/
.site-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  height: var(--bar);
  padding: 0 1.5rem;
  background: var(--charcoal);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.site-logo-img {
    height: 36px;
    width: auto;
    padding: 4px 0;
}

.site-header-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-mid);
}

/*Site Footer*/
.site-footer {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: var(--bar);
  padding: 0 1.5rem;
  background: var(--charcoal);
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 11px;
  letter-spacing: 0.07em;
  color: var(--gray-mid);
}

.footer-links { display: flex; gap: 1.25rem; }
.footer-links a { color: var(--teal); font-weight: 600; text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }

/*Haupt Layout*/
.split-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/*Linkes Panel*/
.left-panel {
  background: var(--charcoal);
  border-right: 1px solid rgba(255,255,255,0.06);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.left-inner {
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.eyebrow {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.75rem;
}

h1 {
  font-weight: 900;
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 0.92;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

h1 em {
  display: block;
  font-style: italic;
  font-weight: 400;
  font-size: 0.55em;
  line-height: 1.4;
  color: var(--gray-mid);
  text-transform: none;
  letter-spacing: 0.01em;
  margin-top: 0.5rem;
}

.hero-desc {
  font-size: 13px;
  color: var(--gray-mid);
  line-height: 1.7;
  margin-bottom: 2rem;
}

/*Schritt Navigation*/
.progress-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 2rem;
}

.prog-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.55rem 0.75rem;
  background: none;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-align: left;
  position: relative;
  transition: background 0.15s;
}
.prog-item::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 0;
  background: var(--teal);
  border-radius: 2px;
  transition: height 0.2s;
}
.prog-item.active::before { height: 60%; }
.prog-item.done::before   { height: 40%; background: var(--teal-deep); opacity: 0.5; }
.prog-item:hover          { background: rgba(255,255,255,0.04); }
.prog-item:not(.active):not(.done) { opacity: 0.4; cursor: default; }

.prog-letter {
  font-weight: 900;
  font-size: 1rem;
  color: var(--gray-mid);
  width: 22px;
  transition: color 0.15s;
}
.prog-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-mid);
  transition: color 0.15s;
}
.prog-item.active .prog-letter,
.prog-item.active .prog-label { color: var(--teal); }
.prog-item.done .prog-letter,
.prog-item.done .prog-label   { color: var(--teal-deep); opacity: 0.7; }

/*Trust Block*/
.trust-block {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.07);
}
.trust-avatars { display: flex; }
.avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--near-black);
  border: 2px solid var(--teal);
  display: flex; align-items: center; justify-content: center;
  font-size: 8px; font-weight: 700;
  color: var(--teal);
  margin-left: -7px;
}
.avatar:first-child { margin-left: 0; }
.trust-text { font-size: 12px; color: var(--gray-mid); line-height: 1.4; }
.trust-text strong { color: var(--white); }

/*Rechtes Panel*/
.right-panel {
  background: var(--near-black);
  overflow-y: auto;
}

form {
  max-width: 600px;
  margin: 0 auto;
  padding: 3rem 2.5rem 5rem;
}

/*Abschnitt Header*/
.sec-header {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}
.sec-letter {
  font-weight: 900;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--teal);
  opacity: 0.25;
}
.sec-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--white);
}

/*Grid*/
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 1.25rem; }
.span-2 { grid-column: span 2; }

/*Felder*/
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field > label {
  font-size: 10px; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gray-mid);
}
.optional { font-weight: 400; font-size: 0.9em; text-transform: none; letter-spacing: 0; }

/*Feldspezifische Fehler*/
.feld-fehler { font-size: 11px; color: var(--error); margin-top: 0.15rem; }
.has-error input,
.has-error select,
.has-error textarea {
  border-color: var(--error) !important;
  background: rgba(255,80,80,0.05) !important;
}
.agb-row.has-error { border-color: var(--error); }

/*Eingabefelder*/
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  background: var(--charcoal);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 0.65rem 0.85rem;
  font-family: "Poppins", sans-serif;
  font-size: 13px;
  color: var(--white);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  transition: border-color 0.15s, background 0.15s;
}
input::placeholder, textarea::placeholder { color: var(--gray-mid); opacity: 0.6; }
input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(1) opacity(0.3); }
input:focus, select:focus, textarea:focus {
  border-color: var(--teal);
  background: rgba(38,255,166,0.04);
}
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239E9999' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}
select option { background: var(--charcoal); }
textarea { resize: vertical; min-height: 130px; }

/*Toggle Gruppe*/
.toggle-group {
  display: flex;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  overflow: hidden;
}
.toggle-group input[type="radio"] { display: none; }
.toggle-group label {
  flex: 1; display: flex; align-items: center; justify-content: center;
  padding: 0.65rem 1rem;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--gray-mid); cursor: pointer;
  border-right: 1px solid rgba(255,255,255,0.1);
  transition: background 0.15s, color 0.15s;
}
.toggle-group label:last-child { border-right: none; }
.toggle-group input[type="radio"]:checked + label {
  background: var(--teal);
  color: var(--near-black);
}

/*Checkbox Kacheln*/
.checkbox-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem; }
.check-pill {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius); cursor: pointer;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--gray-mid); user-select: none;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.check-pill input[type="checkbox"] { display: none; }
.check-pill:has(input:checked) {
  border-color: var(--teal);
  background: rgba(38,255,166,0.1);
  color: var(--teal);
}

/*Datei Upload*/
.file-zone {
  position: relative;
  border: 1px dashed rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: 1.75rem 1.25rem;
  text-align: center; cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.file-zone:hover, .file-zone.drag {
  border-color: var(--teal);
  background: rgba(38,255,166,0.04);
}
.file-zone input[type="file"] {
  position: absolute; inset: 0;
  opacity: 0; cursor: pointer;
  width: 100%; height: 100%;
}
.file-label {
  pointer-events: none;
  display: flex; flex-direction: column; align-items: center; gap: 0.35rem;
  color: var(--gray-mid);
}
.file-label svg  { color: var(--teal); opacity: 0.6; margin-bottom: 0.2rem; }
.file-label strong { font-size: 13px; font-weight: 700; color: var(--white); }
.file-label span   { font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; }

/*AGB*/
.agb-row {
  display: flex; align-items: flex-start; gap: 0.85rem;
  padding: 0.9rem; margin-top: 1.1rem;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius); cursor: pointer;
  transition: border-color 0.15s;
}
.agb-row:has(input:checked) { border-color: var(--teal); }
.custom-check { position: relative; flex-shrink: 0; margin-top: 2px; }
.custom-check input[type="checkbox"] {
  position: absolute; opacity: 0; width: 18px; height: 18px; cursor: pointer;
}
.check-box {
  display: block; width: 18px; height: 18px;
  border: 1.5px solid rgba(255,255,255,0.2);
  border-radius: 3px; background: transparent;
  transition: border-color 0.15s, background 0.15s;
}
.custom-check input:checked + .check-box {
  background: var(--teal); border-color: var(--teal);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='9' viewBox='0 0 11 9'%3E%3Cpath d='M1 4l3 3 6-6' stroke='%231A1816' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: center;
}
.agb-text { font-size: 12px; color: var(--gray-mid); line-height: 1.6; }
.agb-text a { color: var(--teal); font-weight: 600; text-decoration: none; }
.agb-text a:hover { text-decoration: underline; }

/*Step by Step*/
.form-section { display: none; animation: fadeSlide 0.25s ease forwards; }
.form-section.active { display: block; }

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.step-footer {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-top: 1.75rem; gap: 1rem;
}
.step-hint { font-size: 11px; letter-spacing: 0.07em; color: var(--gray-mid); }

/*Buttons*/
.btn-next {
  background: var(--teal); color: var(--near-black);
  border: none; border-radius: var(--radius);
  padding: 0.8rem 1.75rem;
  font-family: "Poppins", sans-serif;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.15em; text-transform: uppercase;
  cursor: pointer; white-space: nowrap;
  transition: background 0.15s, transform 0.1s;
}
.btn-next:hover  { background: var(--teal-deep); color: var(--white); }
.btn-next:active { transform: scale(0.97); }

.btn-back-step {
  background: none;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 0.8rem 1.25rem;
  font-family: "Poppins", sans-serif;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--gray-mid); cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.btn-back-step:hover { border-color: var(--white); color: var(--white); }

.submit-area { display: flex; align-items: center; gap: 1.25rem; }
.submit-note { font-size: 11px; letter-spacing: 0.08em; color: var(--gray-mid); }

button[type="submit"] {
  background: var(--teal); color: var(--near-black);
  border: none; border-radius: var(--radius);
  padding: 0.8rem 2rem;
  font-family: "Poppins", sans-serif;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.15em; text-transform: uppercase;
  cursor: pointer; white-space: nowrap;
  transition: background 0.15s, transform 0.1s;
}
button[type="submit"]:hover  { background: var(--teal-deep); color: var(--white); }
button[type="submit"]:active { transform: scale(0.98); }

/*Validierungsfehler (JS)*/
.field-error {
  border-color: var(--error) !important;
  background: rgba(255,80,80,0.05) !important;
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%     { transform: translateX(-6px); }
  40%     { transform: translateX(6px); }
  60%     { transform: translateX(-4px); }
  80%     { transform: translateX(4px); }
}
.shake { animation: shake 0.35s ease; }

/*Fehler Box*/
.fehler-box {
  max-width: 600px; margin: 3rem auto -1rem; padding: 0 2.5rem;
}
.fehler-box p {
  background: rgba(255,80,80,0.1);
  border: 1px solid rgba(255,80,80,0.3);
  border-radius: var(--radius);
  padding: 0.7rem 0.9rem;
  font-size: 13px; color: #ff8080; margin-bottom: 0.5rem;
}

/*Erfolgs Screen*/
.success-screen {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  min-height: 80vh; padding: 3rem; gap: 1.1rem;
}
.success-icon {
  width: 68px; height: 68px; border-radius: 50%;
  background: rgba(38,255,166,0.12);
  border: 2px solid var(--teal);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; color: var(--teal);
}
.success-screen h2 {
  font-weight: 900; font-size: 1.8rem;
  text-transform: uppercase; letter-spacing: -0.01em;
}
.success-screen p { font-size: 14px; color: var(--gray-mid); max-width: 44ch; line-height: 1.7; }
.success-screen p strong { color: var(--white); }
.success-detail {
  font-size: 12px; color: var(--gray-mid);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius); padding: 0.7rem 1.1rem;
}
.btn-back {
  display: inline-block; margin-top: 0.4rem;
  background: var(--teal); color: var(--near-black);
  text-decoration: none; padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-family: "Poppins", sans-serif;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.15em; text-transform: uppercase;
  transition: background 0.15s;
}
.btn-back:hover { background: var(--teal-deep); color: var(--white); }

/*Responsive: Tablet*/
@media (max-width: 900px) {
  body { height: auto; min-height: 100vh; overflow: visible; }

  .split-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    overflow: visible;
  }

  .right-panel { overflow: visible; height: auto; }

  .left-panel {
    height: auto !important;
    min-height: 0 !important;
    overflow: visible;
  }
  .left-inner {
    padding: 0.5rem 1.25rem !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 0.75rem;
    flex: 0 0 auto !important;
    min-height: 0 !important;
    background: var(--charcoal);
  }
  .eyebrow      { display: none !important; }
  .hero-desc    { display: none !important; }
  .trust-block  { display: none !important; }
  .progress-nav { display: none !important; }

  h1 {
    font-size: 1.2rem;
    margin-bottom: 0 !important;
    line-height: 1;
  }
  h1 em { display: none !important; }

  /*Felder für Tablet*/
  .grid-2 { grid-template-columns: 1fr; }
  .span-2 { grid-column: span 1; }

  .site-footer {
    height: auto;
    padding: 0.6rem 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
  }
}

/*Responsive: Mobile*/
@media (max-width: 600px) {
  form { padding: 1.5rem 1.25rem 4rem; }

  .step-footer  { flex-direction: column; align-items: stretch; }
  .submit-area  { flex-direction: column; align-items: stretch; }
  .submit-note  { text-align: center; }

  button[type="submit"],
  .btn-next { width: 100%; text-align: center; }
}