/* =============================================================================
   IVG NA-Schutz Konfigurator – Frontend Stylesheet
   CI: Primary #267FC3 | Secondary #54595F | Accent #57B33E
   ============================================================================= */

/* ── CSS Custom Properties ─────────────────────────────────────────────── */
.ivg-nas-wrap {
  --ivg-primary:     #267FC3;
  --ivg-primary-dk:  #1a5f96;
  --ivg-secondary:   #54595F;
  --ivg-accent:      #57B33E;
  --ivg-accent-dk:   #3f8a2a;
  --ivg-text:        #000000;
  --ivg-text-light:  #54595F;
  --ivg-bg:          #F1F1F1;
  --ivg-card:        #FFFFFF;
  --ivg-border:      #E3E3E3;
  --ivg-error:       #c0392b;
  --ivg-warning-bg:  #fffbe6;
  --ivg-warning-bd:  #f9c851;
  --ivg-warning-txt: #7a5a00;
  --ivg-radius:      6px;
  --ivg-shadow:      0 2px 12px rgba(0,0,0,.08);
  --ivg-transition:  0.2s ease;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  color: var(--ivg-text);
  line-height: 1.55;
}

/* ── Utility ─────────────────────────────────────────────────────────────── */
.ivg-nas-step--hidden,
.ivg-nas-hint--hidden,
.ivg-nas-optional-fields--hidden,
.ivg-nas-field-error--hidden,
.ivg-nas-field--hidden,
.ivg-nas-inquiry-form--hidden,
.ivg-nas-success--hidden,
.ivg-nas-loading--hidden,
.ivg-nas-global-error--hidden,
.ivg-nas-privacy-field--hidden {
  display: none !important;
}

/* ── Wrapper ─────────────────────────────────────────────────────────────── */
.ivg-nas-wrap {
  background: var(--ivg-bg);
  border-radius: var(--ivg-radius);
  border: 1px solid var(--ivg-border);
  overflow: hidden;
  position: relative;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.ivg-nas-header {
  background: var(--ivg-card);
  border-bottom: 3px solid var(--ivg-primary);
  padding: 20px 28px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.ivg-nas-header__logo img {
  display: block;
  max-width: 140px;
  height: auto;
}

.ivg-nas-header__title {
  flex: 1;
}

.ivg-nas-header__title h2 {
  margin: 0 0 4px;
  font-size: 20px;
  font-weight: 700;
  color: var(--ivg-primary);
  line-height: 1.2;
}

.ivg-nas-header__title p {
  margin: 0;
  font-size: 13px;
  color: var(--ivg-text-light);
}

/* ── Progress ────────────────────────────────────────────────────────────── */
.ivg-nas-progress {
  display: flex;
  align-items: center;
  padding: 16px 28px;
  background: var(--ivg-card);
  border-bottom: 1px solid var(--ivg-border);
}

.ivg-nas-progress__line {
  flex: 1;
  height: 2px;
  background: var(--ivg-border);
  margin: 0 8px;
  transition: background var(--ivg-transition);
}

.ivg-nas-progress__line--done {
  background: var(--ivg-accent);
}

.ivg-nas-progress__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.ivg-nas-progress__num {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  background: var(--ivg-border);
  color: var(--ivg-text-light);
  transition: background var(--ivg-transition), color var(--ivg-transition);
}

.ivg-nas-progress__step--active .ivg-nas-progress__num {
  background: var(--ivg-primary);
  color: #fff;
}

.ivg-nas-progress__step--done .ivg-nas-progress__num {
  background: var(--ivg-accent);
  color: #fff;
}

.ivg-nas-progress__label {
  font-size: 11px;
  color: var(--ivg-text-light);
  white-space: nowrap;
}

.ivg-nas-progress__step--active .ivg-nas-progress__label {
  color: var(--ivg-primary);
  font-weight: 600;
}

/* ── Intro ───────────────────────────────────────────────────────────────── */
.ivg-nas-intro {
  padding: 16px 28px;
  background: var(--ivg-card);
  border-bottom: 1px solid var(--ivg-border);
  color: var(--ivg-text-light);
  font-size: 14px;
}

/* ── Steps ───────────────────────────────────────────────────────────────── */
.ivg-nas-step {
  padding: 28px;
  background: var(--ivg-card);
  animation: ivgFadeIn .25s ease;
}

@keyframes ivgFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ivg-nas-step__title {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ivg-text);
}

.ivg-nas-step__sub {
  margin: 0 0 20px;
  color: var(--ivg-text-light);
  font-size: 14px;
}

/* ── Type cards (Step 1) ─────────────────────────────────────────────────── */
.ivg-nas-type-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 8px;
}

.ivg-nas-type-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 28px 20px;
  border: 2px solid var(--ivg-border);
  border-radius: var(--ivg-radius);
  background: var(--ivg-card);
  cursor: pointer;
  transition: border-color var(--ivg-transition), box-shadow var(--ivg-transition), transform var(--ivg-transition);
  gap: 10px;
  font-family: inherit;
}

.ivg-nas-type-card:hover {
  border-color: var(--ivg-primary);
  box-shadow: var(--ivg-shadow);
  transform: translateY(-2px);
}

.ivg-nas-type-card--selected,
.ivg-nas-type-card[aria-pressed="true"] {
  border-color: var(--ivg-primary);
  background: rgba(38,127,195,.05);
  box-shadow: 0 0 0 3px rgba(38,127,195,.18);
}

.ivg-nas-type-card__icon {
  color: var(--ivg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ivg-nas-type-card__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ivg-text);
}

.ivg-nas-type-card__sub {
  font-size: 13px;
  color: var(--ivg-text-light);
}

/* ── Form fields ─────────────────────────────────────────────────────────── */
.ivg-nas-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ivg-secondary);
  margin-bottom: 6px;
}

.ivg-nas-required {
  color: var(--ivg-error);
  margin-left: 2px;
}

.ivg-nas-optional {
  font-weight: 400;
  color: var(--ivg-text-light);
  font-size: 12px;
  margin-left: 4px;
}

.ivg-nas-fieldset {
  border: none;
  padding: 0;
  margin: 0 0 20px;
}

.ivg-nas-fieldset legend.ivg-nas-label {
  float: none;
  font-size: 13px;
  font-weight: 600;
}

.ivg-nas-field {
  margin-bottom: 20px;
}

.ivg-nas-field-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.ivg-nas-field-group--inline .ivg-nas-field {
  flex: 1;
  min-width: 200px;
}

.ivg-nas-input {
  display: block;
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--ivg-border);
  border-radius: var(--ivg-radius);
  font-size: 15px;
  font-family: inherit;
  color: var(--ivg-text);
  background: #fff;
  transition: border-color var(--ivg-transition), box-shadow var(--ivg-transition);
  box-sizing: border-box;
  outline: none;
}

.ivg-nas-input:focus {
  border-color: var(--ivg-primary);
  box-shadow: 0 0 0 3px rgba(38,127,195,.18);
}

.ivg-nas-input--error {
  border-color: var(--ivg-error);
}

.ivg-nas-textarea {
  resize: vertical;
  min-height: 80px;
}

/* ── Input with unit ─────────────────────────────────────────────────────── */
.ivg-nas-input-with-unit {
  display: flex;
  align-items: stretch;
}

.ivg-nas-input-with-unit .ivg-nas-input {
  border-radius: var(--ivg-radius) 0 0 var(--ivg-radius);
  border-right: none;
  flex: 1;
}

.ivg-nas-unit {
  display: flex;
  align-items: center;
  padding: 0 14px;
  background: var(--ivg-bg);
  border: 1.5px solid var(--ivg-border);
  border-left: none;
  border-radius: 0 var(--ivg-radius) var(--ivg-radius) 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--ivg-text-light);
  white-space: nowrap;
  min-width: 50px;
  justify-content: center;
}

/* ── Radio cards ─────────────────────────────────────────────────────────── */
.ivg-nas-radio-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.ivg-nas-radio-card {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  border: 1.5px solid var(--ivg-border);
  border-radius: var(--ivg-radius);
  cursor: pointer;
  flex: 1;
  min-width: 220px;
  transition: border-color var(--ivg-transition), background var(--ivg-transition);
}

.ivg-nas-radio-card input[type="radio"] {
  margin-top: 3px;
  accent-color: var(--ivg-primary);
  flex-shrink: 0;
}

.ivg-nas-radio-card:has(input:checked) {
  border-color: var(--ivg-primary);
  background: rgba(38,127,195,.04);
}

.ivg-nas-radio-card__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ivg-nas-radio-card__body strong {
  font-size: 14px;
  color: var(--ivg-text);
}

.ivg-nas-radio-card__body span {
  font-size: 12px;
  color: var(--ivg-text-light);
}

/* ── Hint banner ─────────────────────────────────────────────────────────── */
.ivg-nas-hint {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--ivg-radius);
  font-size: 13px;
  margin-bottom: 20px;
}

.ivg-nas-hint--warning {
  background: var(--ivg-warning-bg);
  border: 1px solid var(--ivg-warning-bd);
  color: var(--ivg-warning-txt);
}

.ivg-nas-hint svg { flex-shrink: 0; margin-top: 1px; }

/* ── Field error ─────────────────────────────────────────────────────────── */
.ivg-nas-field-error {
  display: block;
  color: var(--ivg-error);
  font-size: 12px;
  margin-top: 4px;
}

/* ── Optional section toggle ─────────────────────────────────────────────── */
.ivg-nas-optional-section {
  margin-bottom: 20px;
  border: 1px solid var(--ivg-border);
  border-radius: var(--ivg-radius);
  overflow: hidden;
}

.ivg-nas-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 12px 16px;
  background: var(--ivg-bg);
  border: none;
  font-size: 14px;
  font-weight: 600;
  color: var(--ivg-text-light);
  cursor: pointer;
  font-family: inherit;
  transition: background var(--ivg-transition);
}

.ivg-nas-toggle-btn:hover {
  background: #e6e6e6;
}

.ivg-nas-toggle-icon {
  transition: transform var(--ivg-transition);
  flex-shrink: 0;
}

.ivg-nas-toggle-btn[aria-expanded="true"] .ivg-nas-toggle-icon {
  transform: rotate(180deg);
}

.ivg-nas-optional-fields {
  padding: 16px;
  border-top: 1px solid var(--ivg-border);
  background: var(--ivg-card);
}

/* ── Checkbox ────────────────────────────────────────────────────────────── */
.ivg-nas-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 13px;
  color: var(--ivg-text-light);
}

.ivg-nas-checkbox-label input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--ivg-primary);
  flex-shrink: 0;
}

.ivg-nas-privacy-field {
  margin-top: 4px;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.ivg-nas-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--ivg-radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  border: 2px solid transparent;
  text-decoration: none;
  transition: background var(--ivg-transition), border-color var(--ivg-transition), transform var(--ivg-transition);
  line-height: 1.3;
}

.ivg-nas-btn--primary {
  background: var(--ivg-primary);
  color: #fff;
  border-color: var(--ivg-primary);
}

.ivg-nas-btn--primary:hover {
  background: var(--ivg-primary-dk);
  border-color: var(--ivg-primary-dk);
}

.ivg-nas-btn--accent {
  background: var(--ivg-accent);
  color: #fff;
  border-color: var(--ivg-accent);
}

.ivg-nas-btn--accent:hover {
  background: var(--ivg-accent-dk);
  border-color: var(--ivg-accent-dk);
}

.ivg-nas-btn--secondary {
  background: transparent;
  color: var(--ivg-text-light);
  border-color: var(--ivg-border);
}

.ivg-nas-btn--secondary:hover {
  border-color: var(--ivg-secondary);
  color: var(--ivg-text);
}

.ivg-nas-btn--ghost {
  background: transparent;
  color: var(--ivg-text-light);
  border-color: transparent;
  font-weight: 400;
  font-size: 13px;
}

.ivg-nas-btn--ghost:hover {
  color: var(--ivg-primary);
}

.ivg-nas-btn:disabled,
.ivg-nas-btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Form actions row ────────────────────────────────────────────────────── */
.ivg-nas-form-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--ivg-border);
}

.ivg-nas-form-actions--step3 {
  border-top: none;
  margin-top: 8px;
  padding-top: 0;
}

/* ── Result card ─────────────────────────────────────────────────────────── */
.ivg-nas-result {
  border: 1px solid var(--ivg-border);
  border-radius: var(--ivg-radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.ivg-nas-result__header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.ivg-nas-result__header--product {
  background: linear-gradient(135deg, rgba(38,127,195,.1) 0%, rgba(38,127,195,.04) 100%);
  border-bottom: 2px solid var(--ivg-primary);
}

.ivg-nas-result__header--hint {
  background: var(--ivg-bg);
  border-bottom: 2px solid var(--ivg-border);
}

.ivg-nas-result__header--inquiry,
.ivg-nas-result__header--kwp {
  background: linear-gradient(135deg, rgba(87,179,62,.08) 0%, rgba(87,179,62,.02) 100%);
  border-bottom: 2px solid var(--ivg-accent);
}

.ivg-nas-result__icon {
  flex-shrink: 0;
}

.ivg-nas-result__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--ivg-text);
  margin: 0;
}

.ivg-nas-result__body {
  padding: 20px;
  background: var(--ivg-card);
}

.ivg-nas-result__text {
  font-size: 15px;
  color: var(--ivg-text);
  line-height: 1.6;
  margin: 0 0 16px;
}

.ivg-nas-result__text strong { color: var(--ivg-primary); }

.ivg-nas-result__ctas {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.ivg-nas-result__disclaimer {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 16px;
  background: var(--ivg-bg);
  border-left: 3px solid var(--ivg-secondary);
  border-radius: 0 var(--ivg-radius) var(--ivg-radius) 0;
  font-size: 12px;
  color: var(--ivg-text-light);
  line-height: 1.5;
  margin-top: 4px;
}

.ivg-nas-result__disclaimer-label {
  font-weight: 700;
  color: var(--ivg-secondary);
  flex-shrink: 0;
}

/* ── Inquiry form (Step 3 subsection) ────────────────────────────────────── */
.ivg-nas-inquiry-form {
  border: 1px solid var(--ivg-border);
  border-radius: var(--ivg-radius);
  padding: 20px;
  background: var(--ivg-bg);
  margin-top: 20px;
}

.ivg-nas-inquiry-form__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ivg-text);
}

.ivg-nas-inquiry-form > p {
  margin: 0 0 16px;
  font-size: 13px;
  color: var(--ivg-text-light);
}

/* ── Success state ───────────────────────────────────────────────────────── */
.ivg-nas-success {
  text-align: center;
  padding: 32px 20px;
}

.ivg-nas-success__icon {
  margin-bottom: 12px;
}

.ivg-nas-success p {
  font-size: 16px;
  font-weight: 600;
  color: var(--ivg-accent);
}

/* ── Loading overlay ─────────────────────────────────────────────────────── */
.ivg-nas-loading {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  font-size: 14px;
  color: var(--ivg-text-light);
  z-index: 10;
  border-radius: var(--ivg-radius);
}

.ivg-nas-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--ivg-border);
  border-top-color: var(--ivg-primary);
  border-radius: 50%;
  animation: ivgSpin .7s linear infinite;
}

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

/* ── Global error ────────────────────────────────────────────────────────── */
.ivg-nas-global-error {
  background: #fde8e8;
  border: 1px solid #f4a0a0;
  color: var(--ivg-error);
  padding: 12px 16px;
  border-radius: var(--ivg-radius);
  margin: 12px 28px;
  font-size: 14px;
}

/* ── Trust badge strip ───────────────────────────────────────────────────── */
.ivg-nas-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 12px 28px;
  background: var(--ivg-card);
  border-top: 1px solid var(--ivg-border);
  font-size: 12px;
  color: var(--ivg-text-light);
  flex-wrap: wrap;
}

.ivg-nas-trust__item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.ivg-nas-trust__item svg { color: var(--ivg-accent); }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .ivg-nas-header {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 18px;
  }
  .ivg-nas-step { padding: 20px 18px; }
  .ivg-nas-type-cards { grid-template-columns: 1fr; }
  .ivg-nas-field-group--inline { flex-direction: column; gap: 0; }
  .ivg-nas-field-group--inline .ivg-nas-field { min-width: 0; }
  .ivg-nas-radio-group { flex-direction: column; }
  .ivg-nas-radio-card { min-width: 0; }
  .ivg-nas-progress { padding: 12px 16px; }
  .ivg-nas-progress__label { font-size: 10px; }
  .ivg-nas-form-actions { flex-direction: column; align-items: stretch; }
  .ivg-nas-form-actions .ivg-nas-btn { width: 100%; justify-content: center; }
  .ivg-nas-result__ctas { flex-direction: column; }
  .ivg-nas-result__ctas .ivg-nas-btn { width: 100%; justify-content: center; }
}

/* ── Wechselrichter-Auswahl (v1.1) ──────────────────────────────── */
.ivg-nas-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2354595F' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}
.ivg-nas-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.ivg-nas-kva-readonly {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--ivg-bg, #F1F1F1);
    border: 1px solid var(--ivg-border, #E3E3E3);
    border-radius: 4px;
    padding: 8px 14px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--ivg-primary, #267FC3);
}
.ivg-nas-kva-readonly .ivg-nas-unit {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--ivg-secondary, #54595F);
}