/* =============================================================
   ROTTERDAMSCHE AERO CLUB · 100 JAAR (1926 – 2026)
   Ledenpeiling ALV 2026 — Enquête Stylesheet
   Sluit naadloos aan op de RAC 100 Jaar Jubileumhuisstijl
   ============================================================= */

/* =============================================================
   1. LANGUAGE SWITCHING DISPLAY RULES (NL / EN ONLY)
   ============================================================= */

/* Dutch Mode (Default) */
html.lang-mode-nl .txt-en {
  display: none !important;
}
html.lang-mode-nl .txt-nl {
  display: block;
  font-style: normal !important;
  color: inherit;
  font-size: inherit;
}
html.lang-mode-nl span.txt-nl {
  display: inline;
  font-style: normal !important;
  color: inherit;
  font-size: inherit;
}

/* English Only Mode */
html.lang-mode-en .txt-nl {
  display: none !important;
}
html.lang-mode-en .txt-en {
  display: block;
  font-style: normal !important;
  color: inherit;
  font-size: inherit;
  margin-top: 0;
}
html.lang-mode-en span.txt-en {
  display: inline;
  font-style: normal !important;
  color: inherit;
  font-size: inherit;
  margin-top: 0;
}

/* Choice card labels in each mode */
.choice-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--green-ink);
  line-height: 1.35;
}
html.lang-mode-en .choice-label .txt-en {
  display: block;
  font-weight: 600;
  font-size: 15px;
  font-style: normal !important;
  color: var(--green-ink);
}
html.lang-mode-nl .choice-label .txt-nl {
  display: block;
  font-weight: 600;
  font-size: 15px;
  font-style: normal !important;
  color: var(--green-ink);
}

/* Rating scale labels */
html.lang-mode-en .rating-sub .txt-en {
  display: block;
  font-style: normal !important;
  color: inherit;
  font-size: 10.5px;
}
html.lang-mode-nl .rating-sub .txt-nl {
  display: block;
  font-style: normal !important;
  color: inherit;
  font-size: 10.5px;
}

/* =============================================================
   2. NAVIGATION & HERO
   ============================================================= */

.survey-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  background: rgba(28, 46, 18, 0.08);
  padding: 4px;
  border-radius: 999px;
  border: 1px solid rgba(81, 139, 60, 0.2);
}
.lang-btn {
  background: transparent;
  border: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--green-ink);
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.lang-btn:hover {
  color: var(--green-deep);
}
.lang-btn.is-active {
  background: var(--green-ink);
  color: var(--gold);
  box-shadow: 0 2px 8px rgba(28, 46, 18, 0.18);
}

/* Survey Hero Section */
.survey-hero {
  background: linear-gradient(180deg, #16250e 0%, var(--green-ink) 70%, #223816 100%);
  color: #fff;
  padding: clamp(120px, 14vw, 160px) 0 clamp(48px, 6vw, 72px);
  position: relative;
  overflow: hidden;
  border-bottom: 3px solid var(--gold);
}
.survey-hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(250, 228, 103, 0.12) 0%, rgba(81, 139, 60, 0.05) 50%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.survey-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(to top, rgba(0,0,0,0.15), transparent);
  pointer-events: none;
}

.survey-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.survey-hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}
.survey-hero .eyebrow img {
  height: 16px;
  width: auto;
}

.survey-hero h1 {
  font-size: clamp(32px, 5.2vw, 54px);
  line-height: 1.15;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: -0.025em;
}
.survey-hero h1 em {
  color: var(--gold);
  font-style: normal;
}
.survey-hero .hero-intro-box {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin: 28px auto 32px;
  text-align: left;
  line-height: 1.65;
  font-size: 16.5px;
}
.survey-hero .hero-intro-box p + p {
  margin-top: 14px;
}
.survey-hero .hero-intro-box .txt-en {
  color: rgba(255, 255, 255, 0.85);
}
html.lang-mode-both .survey-hero .hero-intro-box .txt-en {
  border-top: 1px dashed rgba(255, 255, 255, 0.2);
  padding-top: 12px;
  margin-top: 12px;
}

.hero-chips-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(250, 228, 103, 0.15);
  border: 1px solid rgba(250, 228, 103, 0.35);
  color: var(--gold);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
}
.hero-chip svg {
  width: 16px;
  height: 16px;
}

/* =============================================================
   3. STICKY PROGRESS BAR & SECTION TRACKER
   ============================================================= */
.progress-sticky {
  position: sticky;
  top: 76px;
  z-index: 90;
  background: rgba(246, 247, 244, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 4px 16px rgba(28, 46, 18, 0.06);
  padding: 12px 0;
  transition: all 0.25s ease;
}
.progress-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}
.progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--green-ink);
  margin-bottom: 8px;
}
.progress-steps-links {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.progress-steps-links::-webkit-scrollbar {
  display: none;
}
.step-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--line);
  padding: 5px 12px;
  border-radius: 999px;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.step-link:hover {
  color: var(--green-deep);
  border-color: var(--green);
}
.step-link.is-active {
  background: var(--green-ink);
  color: var(--gold);
  border-color: var(--green-ink);
}
.step-link.is-completed {
  background: var(--green-soft);
  color: var(--green-deep);
  border-color: var(--green);
}
.step-link .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: rgba(0,0,0,0.08);
  font-size: 10.5px;
}
.step-link.is-active .step-num {
  background: var(--gold);
  color: var(--green-ink);
}
.step-link .step-dot,
.step-link .step-num:empty {
  display: inline-block;
  width: 8px;
  height: 8px;
  min-width: 8px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.2);
  padding: 0;
  margin: 0 1px;
}
.step-link.is-active .step-dot,
.step-link.is-active .step-num:empty {
  background: var(--gold);
}

.progress-bar-track {
  width: 100%;
  height: 6px;
  background: var(--line);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 8px;
}
.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--green) 0%, var(--gold-deep) 100%);
  border-radius: 999px;
  transition: width 0.35s ease;
}

/* =============================================================
   4. FORM BLOCKS & QUESTIONS
   ============================================================= */
.survey-main-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.survey-block {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(28px, 4vw, 44px);
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}
.survey-block:focus-within {
  border-color: rgba(81, 139, 60, 0.4);
}

.block-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 20px;
  margin-bottom: 32px;
}
.block-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.block-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: 999px;
}
.tag-anonymous {
  background: var(--green-soft);
  color: var(--green-deep);
  border: 1px solid rgba(81, 139, 60, 0.25);
}
.tag-optional {
  background: var(--gold-soft);
  color: var(--gold-ink);
  border: 1px solid rgba(232, 207, 59, 0.4);
}

.block-header h2 {
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.25;
  color: var(--green-ink);
}

fieldset {
  border: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
  min-width: 0 !important;
  background: transparent !important;
}

legend {
  padding: 0 !important;
  margin: 0 !important;
  border: 0 !important;
}

.question-group {
  margin: 0 0 36px 0;
  padding: 0 0 32px 0;
  border: 0;
  border-bottom: 1px dashed var(--line);
  background: transparent;
  box-shadow: none;
}
.question-group:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}

.question-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}
.q-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--green-soft);
  color: var(--green-deep);
  font-weight: 800;
  font-size: 14.5px;
  flex-shrink: 0;
  margin-top: 2px;
  border: 1px solid rgba(81, 139, 60, 0.2);
}
.question-title {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--green-ink);
  line-height: 1.35;
  margin: 0;
}
.req-star {
  color: var(--err);
  font-weight: 800;
  margin-left: 4px;
}
.q-hint {
  font-size: 13.5px;
  color: var(--muted);
  margin-top: 4px;
  line-height: 1.45;
}

/* Choice Cards (Radio & Checkbox Grid) */
.choices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.choices-grid.cols-2 {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.choices-grid.cols-3 {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

.choice-card {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  cursor: pointer;
  transition: all 0.18s ease;
  user-select: none;
}
.choice-card:hover {
  border-color: var(--green);
  background: #fafbf9;
  transform: translateY(-1px);
}
.choice-card input[type="radio"],
.choice-card input[type="checkbox"] {
  accent-color: var(--green);
  width: 19px;
  height: 19px;
  margin-top: 2px;
  flex-shrink: 0;
  cursor: pointer;
}
.choice-card:has(input:checked) {
  border-color: var(--green);
  background: var(--green-soft);
  box-shadow: 0 2px 10px rgba(81, 139, 60, 0.12);
}
.choice-card:has(input:focus-visible) {
  outline: 2.5px solid var(--green);
  outline-offset: 2px;
}
.choice-content {
  flex-grow: 1;
}

/* Other Input Field Reveal */
.choice-other-input-wrap {
  margin-top: 12px;
  animation: fadeIn 0.25s ease;
}
.input-text-other {
  width: 100%;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  padding: 11px 14px;
  font-size: 14.5px;
  font-family: var(--sans);
  color: var(--green-ink);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.input-text-other:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(81, 139, 60, 0.15);
}

/* =============================================================
   5. RATING SCALE MATRIX (Q6 & Q9)
   ============================================================= */
.matrix-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.matrix-item {
  background: #fafbf9;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  transition: all 0.2s ease;
}
.matrix-item:hover,
.matrix-item:focus-within {
  background: #fff;
  border-color: rgba(81, 139, 60, 0.4);
  box-shadow: 0 4px 14px rgba(28, 46, 18, 0.05);
}
.matrix-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.matrix-item-title {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--green-ink);
}
.matrix-scale-hint {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--green);
}
.matrix-scale-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}
.rating-btn-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  padding: 10px 6px;
  cursor: pointer;
  transition: all 0.18s ease;
  min-height: 48px;
  position: relative;
}
.rating-btn-label:hover {
  border-color: var(--green);
  background: var(--green-soft);
  transform: translateY(-1px);
}
.rating-btn-label input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.rating-num {
  font-size: 16px;
  font-weight: 800;
  color: var(--green-ink);
}
.rating-sub {
  font-size: 10.5px;
  color: var(--muted);
  text-align: center;
  line-height: 1.1;
  display: none;
}
@media (min-width: 640px) {
  .rating-sub {
    display: block;
  }
}
.rating-btn-label:has(input:checked) {
  background: var(--green);
  border-color: var(--green-deep);
  box-shadow: 0 4px 12px rgba(81, 139, 60, 0.3);
}
.rating-btn-label:has(input:checked) .rating-num,
.rating-btn-label:has(input:checked) .rating-sub,
.rating-btn-label:has(input:checked) .rating-sub span {
  color: #fff !important;
}
.rating-btn-label:has(input:focus-visible) {
  outline: 2.5px solid var(--green);
  outline-offset: 2px;
}

/* Standalone 1-5 scale (Q9) */
.standalone-scale {
  background: #fafbf9;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 20px;
}
.scale-legend-row {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--muted);
  font-weight: 600;
}

/* Textareas */
.textarea-styled {
  width: 100%;
  min-height: 110px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 15.5px;
  font-family: var(--sans);
  color: var(--green-ink);
  line-height: 1.5;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
}
.textarea-styled:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(81, 139, 60, 0.15);
}
.char-counter {
  display: flex;
  justify-content: flex-end;
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

/* Expandable Role Card (Q13) */
.role-choice-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  transition: all 0.2s ease;
  margin-bottom: 10px;
}
.role-choice-card:hover {
  border-color: var(--green);
  background: #fafbf9;
}
.role-choice-card:has(input:checked) {
  border-color: var(--green);
  background: var(--green-soft);
}
.role-choice-card:has(input:focus-visible) {
  outline: 2.5px solid var(--green);
  outline-offset: 2px;
}
.role-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
}
.role-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-grow: 1;
}
.role-left input[type="checkbox"] {
  accent-color: var(--green);
  width: 19px;
  height: 19px;
  flex-shrink: 0;
  cursor: pointer;
}
.role-toggle-desc {
  background: transparent;
  border: 0;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--green);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background 0.15s ease;
}
.role-toggle-desc:hover {
  background: rgba(81, 139, 60, 0.12);
}
.role-desc-drawer {
  margin-top: 10px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.7);
  border-left: 3px solid var(--green);
  border-radius: 0 8px 8px 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink);
  animation: fadeIn 0.2s ease;
}

/* Contact Fields */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  background: #fafbf9;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-top: 14px;
}
.contact-field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--green-ink);
  margin-bottom: 6px;
}
.contact-input {
  width: 100%;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 15px;
  font-family: var(--sans);
  color: var(--green-ink);
  background: #fff;
  transition: all 0.2s ease;
  min-height: 48px;
}
.contact-input:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(81, 139, 60, 0.15);
}

.contact-input:user-invalid,
.textarea-styled:user-invalid {
  border-color: var(--err);
  background-color: var(--err-soft);
}
.contact-input:user-valid:not(:placeholder-shown) {
  border-color: var(--green);
}

/* Heritage Card (Q11) */
.heritage-card {
  background: #faf7ee;
  border: 1.5px solid #ded6be;
  border-radius: var(--radius-sm);
  padding: 20px;
}
.heritage-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--gold);
  color: var(--green-ink);
  font-size: 11.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

/* Submit Card */
.submit-card {
  background: var(--green-ink);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(32px, 5vw, 48px);
  text-align: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.submit-card::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(250, 228, 103, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.submit-card h3 {
  color: #fff;
  font-size: clamp(24px, 3.5vw, 32px);
  margin-bottom: 12px;
}
.submit-card p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  margin: 0 auto 28px;
  font-size: 16px;
  line-height: 1.6;
}
.btn-submit-main {
  font-size: 17px;
  padding: 18px 42px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: -0.01em;
  box-shadow: 0 8px 24px rgba(232, 207, 59, 0.45);
}
.btn-submit-main:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(232, 207, 59, 0.55);
}

.autosave-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--muted);
  background: rgba(28, 46, 18, 0.05);
  padding: 4px 12px;
  border-radius: 999px;
  margin-top: 14px;
}

/* Error Summary Banner */
.validation-summary {
  display: none;
  background: var(--err-soft);
  border: 1.5px solid var(--err);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin-bottom: 30px;
  color: var(--err);
  animation: shake 0.35s ease;
}
.validation-summary h4 {
  font-size: 16px;
  margin-bottom: 6px;
  color: var(--err);
}
.validation-summary ul {
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.5;
}

/* Success View */
.success-screen {
  display: none;
  text-align: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(36px, 6vw, 64px) 24px;
  box-shadow: var(--shadow-lg);
  max-width: 720px;
  margin: 40px auto;
  animation: fadeIn 0.4s ease;
}
.success-icon-ring {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  border: 2px solid var(--green);
}
.success-icon-ring svg {
  width: 44px;
  height: 44px;
}
.success-screen h2 {
  font-size: clamp(28px, 4vw, 38px);
  color: var(--green-ink);
  margin-bottom: 14px;
}
.success-ref-code {
  display: inline-block;
  background: var(--green-soft);
  color: var(--green-deep);
  font-family: monospace;
  font-size: 18px;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 8px;
  margin: 16px 0 24px;
  border: 1px dashed var(--green);
}
.success-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 32px;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

@media (max-width: 768px) {
  .survey-nav-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .lang-switch {
    justify-content: center;
  }
  .matrix-item {
    padding: 14px 12px;
  }
  .matrix-scale-row {
    gap: 6px;
  }
  .rating-btn-label {
    padding: 8px 4px;
  }
}

/* =============================================================
   12. ALV BLOCK & ANONYMITY SELECTION STYLES
   ============================================================= */
.block-highlight {
  border: 2px solid rgba(81, 139, 60, 0.35);
  box-shadow: 0 8px 30px rgba(81, 139, 60, 0.08);
  background: #fff;
}
.tag-alv {
  background: var(--gold-soft);
  color: var(--gold-ink);
  border: 1px solid rgba(232, 207, 59, 0.4);
}
.alv-contact-box {
  background: #f7faf5;
  border: 1.5px solid rgba(81, 139, 60, 0.2);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  animation: fadeIn 0.25s ease;
}
.anonymity-selector-card {
  background: #fbfdfa;
  border: 1.5px solid rgba(81, 139, 60, 0.25);
  border-radius: var(--radius-sm);
  padding: 20px;
  animation: fadeIn 0.25s ease;
}
.anonymity-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--green-ink);
}
.anonymity-header svg {
  color: var(--green);
  flex-shrink: 0;
  margin-top: 2px;
}
.anonymity-header h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 4px 0;
  color: var(--green-ink);
}
.anonymity-subtext {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.4;
  margin: 0;
}
.choice-subtext {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.35;
  margin-top: 5px;
}
.choice-card-secure {
  border-color: rgba(81, 139, 60, 0.35);
}
.btn-alv-submit {
  width: 100%;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 700;
  border-radius: 12px;
  cursor: pointer;
  background: var(--green);
  color: #fff;
  border: none;
  box-shadow: 0 4px 14px rgba(81, 139, 60, 0.3);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn-alv-submit:hover {
  background: var(--green-deep);
  transform: translateY(-1px);
}