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

:root {
  --bg:             #0b0b12;
  --surface:        #13131e;
  --surface-raised: #1a1a28;
  --border:         #252535;
  --border-subtle:  #1d1d2d;
  --text:           #e8e9f0;
  --text-secondary: #9192a8;
  --text-muted:     #55566a;
  --accent:         #2563eb;
  --accent-hover:   #1d4ed8;
  --accent-subtle:  rgba(37, 99, 235, .12);
  --success:        #10d98a;
  --success-bg:     rgba(16, 217, 138, .08);
  --success-border: rgba(16, 217, 138, .2);
  --error:          #f45c7a;
  --error-subtle:   rgba(244, 92, 122, .12);
  --radius:         8px;
  --radius-lg:      12px;
  --shadow:         0 1px 3px rgba(0,0,0,.45), 0 8px 24px rgba(0,0,0,.3);
  --font:           'Inter', system-ui, -apple-system, sans-serif;
}

body {
  font-family: var(--font);
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ─── App Layout ──────────────────────────────────────────── */
.app-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 11, 18, .85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 32px;
  height: 56px;
  display: flex;
  align-items: center;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  height: 30px;
  width: auto;
}

.brand-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -.01em;
}

.app-main {
  flex: 1;
  padding: 40px 24px 64px;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

/* ─── Step Progress ───────────────────────────────────────── */
.step-progress {
  display: flex;
  align-items: center;
  margin-bottom: 28px;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.step-dot {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--border);
  background: var(--surface);
  transition: background .2s, border-color .2s;
  flex-shrink: 0;
}

.step-number {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  transition: color .2s;
}

.step-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color .2s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.step-item.active .step-dot {
  background: var(--accent-subtle);
  border-color: var(--accent);
}
.step-item.active .step-number { color: var(--accent); }
.step-item.active .step-label  { color: var(--text); }

.step-item.done .step-dot {
  background: var(--accent);
  border-color: var(--accent);
}
.step-item.done .step-number {
  font-size: 0;
}
.step-item.done .step-number::before {
  content: '✓';
  font-size: 12px;
  font-weight: 700;
  color: #fff;
}
.step-item.done .step-label { color: var(--text); }

.step-connector {
  flex: 1;
  height: 1px;
  background: var(--border);
  margin: 0 10px;
  min-width: 10px;
}

/* ─── Form Step Visibility ────────────────────────────────── */
.form-step         { display: none; }
.form-step.active  { display: block; }

/* ─── Card ────────────────────────────────────────────────── */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}

.card-header {
  padding: 24px 28px 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -.015em;
  margin-bottom: 3px;
}

.card-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ─── Welcome card (Step 0) ───────────────────────────────── */
.welcome-card .card-header {
  padding: 32px 32px 18px;
  border-bottom: none;
  text-align: left;
}

.welcome-card .card-title {
  font-size: 22px;
  letter-spacing: -.02em;
  margin-bottom: 10px;
}

.welcome-card .card-subtitle {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.welcome-body {
  padding: 0 32px 28px;
}

.welcome-highlight {
  background: var(--accent-subtle);
  border: 1px solid rgba(37, 99, 235, .25);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 13px;
  color: var(--text);
  line-height: 1.55;
}

.welcome-highlight strong { color: var(--accent); font-weight: 700; }

/* ─── Field Groups ────────────────────────────────────────── */
.field-group {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border-subtle);
}
.field-group:last-of-type { border-bottom: none; }

.group-label {
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.form-row {
  display: flex;
  gap: 16px;
  margin-bottom: 14px;
}
.form-row:last-child { margin-bottom: 0; }

.form-group { flex: 1; min-width: 0; margin-bottom: 14px; }
.form-group:last-child { margin-bottom: 0; }
.form-group.full-width { flex: 1 1 100%; }

.form-row .form-group { margin-bottom: 0; }

/* ─── Labels ──────────────────────────────────────────────── */
.form-group > label,
.form-group > div > label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: .01em;
  line-height: 1.45;
}

.optional-tag {
  font-size: 10px;
  font-weight: 400;
  color: var(--text-muted);
  background: var(--surface-raised);
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid var(--border);
  margin-left: 4px;
  text-transform: none;
  letter-spacing: 0;
}

.required {
  color: var(--accent);
  font-weight: 600;
  margin-left: 2px;
}

.note {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 6px;
  line-height: 1.5;
}

/* ─── Inputs ──────────────────────────────────────────────── */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
input[type="number"],
input[type="url"],
select,
textarea {
  width: 100%;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 13.5px;
  padding: 9px 12px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  -webkit-appearance: none;
  appearance: none;
}

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='%239192a8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 11px center;
  padding-right: 34px;
  cursor: pointer;
  text-overflow: ellipsis;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

input::placeholder, textarea::placeholder {
  color: var(--text-muted);
}

textarea {
  resize: vertical;
  min-height: 96px;
  line-height: 1.6;
}

input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(.45) brightness(1.5);
  cursor: pointer;
  opacity: .7;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }
input[type="number"] { -moz-appearance: textfield; }

/* Validation error state */
.invalid-field {
  border-color: var(--error) !important;
  box-shadow: 0 0 0 3px var(--error-subtle) !important;
}

/* ─── Chip Selection (Du/Sie etc.) ────────────────────────── */
.chip-selection {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip-selection input[type="radio"],
.chip-selection input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.chip-selection .chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  min-width: 90px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-raised);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
  user-select: none;
  white-space: nowrap;
  padding: 0 20px;
  margin-bottom: 0;
}

.chip-selection .chip:hover {
  border-color: var(--accent);
  color: var(--text);
  background: var(--accent-subtle);
}

.chip-selection input:checked + .chip {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(37, 99, 235, .3);
}

.chip-selection input:focus-visible + .chip {
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

/* ─── Custom File Upload ──────────────────────────────────── */
.custom-file-upload {
  width: 100%;
  position: relative;
}

.custom-file-upload > input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
}

.upload-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 28px 20px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface-raised);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
  text-align: center;
}

.upload-area:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
  color: var(--text);
}

.upload-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 6px;
  color: var(--accent);
  font-size: 0;
}

.upload-icon svg {
  width: 18px;
  height: 18px;
}

.upload-text {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
}

.upload-subtext {
  font-size: 12px;
  color: var(--text-muted);
}

.uploaded-files {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.uploaded-files:empty { margin-top: 0; }

.uploaded-file {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12.5px;
  color: var(--text);
}

.uploaded-file span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.remove-file {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
  transition: color .15s;
}

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

/* ─── Form Actions ────────────────────────────────────────── */
.form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 0;
}

.form-actions--right { justify-content: flex-end; }

/* ─── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  font-family: var(--font);
  font-size: 13.5px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background .15s, box-shadow .15s, transform .1s, opacity .15s;
  white-space: nowrap;
  outline: none;
  position: relative;
  overflow: hidden;
  line-height: 1;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(37, 99, 235, .4);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: none;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--surface-raised);
  color: var(--text);
  border-color: var(--text-muted);
}

.btn:disabled {
  opacity: .38;
  cursor: not-allowed;
}

.btn-lg {
  padding: 11px 22px;
  font-size: 14px;
}

/* ─── Submit loader ───────────────────────────────────────── */
.button-text { display: block; }

.loader,
.spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, .25);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
  flex-shrink: 0;
}

.btn.loading .button-text { display: none; }
.btn.loading .loader,
.btn.loading .spinner    { display: block; }

.hidden { display: none !important; }
.button-text.hidden { display: none; }

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

/* ─── Thank You Page ──────────────────────────────────────── */
.thankyou-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}

.thankyou-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  max-width: 520px;
  width: 100%;
  padding: 40px 36px;
  text-align: center;
}

.thankyou-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--success);
}

.thankyou-card h1 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--text);
  margin-bottom: 10px;
}

.thankyou-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

.thankyou-card p:last-of-type { margin-bottom: 0; }

/* ─── Color Picker Widget ─────────────────────────────────── */
.color-picker-widget {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.color-preset-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.color-swatch {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .12s, box-shadow .12s, border-color .12s;
  position: relative;
  flex-shrink: 0;
  padding: 0;
  outline: none;
}

.color-swatch:hover {
  transform: scale(1.18);
  box-shadow: 0 2px 10px rgba(0,0,0,.5);
}

.color-swatch.selected {
  border-color: #fff;
  box-shadow: 0 0 0 2px var(--accent), 0 2px 10px rgba(0,0,0,.45);
  transform: scale(1.12);
}

.color-swatch--add {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1.5px dashed var(--border);
  background: var(--surface-raised);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s, transform .12s;
  flex-shrink: 0;
}

.color-swatch--add:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
  color: var(--accent);
  transform: scale(1.1);
}

.color-swatch--add input[type="color"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
  padding: 0;
  border: 0;
  background: none;
  min-height: 0;
}

.selected-colors {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.selected-colors:empty { display: none; }

.selected-color-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px 5px 6px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}

.chip-color-dot {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  flex-shrink: 0;
  border: 1px solid rgba(255,255,255,.1);
}

.chip-remove {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  margin-left: 2px;
  transition: color .12s;
  display: flex;
  align-items: center;
}

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

/* ─── Responsive ──────────────────────────────────────────── */
@media (max-width: 720px) {
  .app-header  { padding: 0 16px; }
  .app-main    { padding: 24px 16px 48px; }
  .card-header { padding: 20px 20px 16px; }
  .field-group { padding: 16px 20px; }
  .form-row    { flex-direction: column; gap: 12px; }
  .step-label  { display: none; }
  .step-connector { margin: 0 6px; }
  .welcome-card .card-header { padding: 24px 22px 14px; }
  .welcome-body { padding: 0 22px 22px; }
  .chip-selection .chip { flex: 1 1 calc(50% - 4px); min-width: 0; }
}