:root {
  --bg:         #F0F4F6;
  --surface:    #FFFFFF;
  --border:     #D2D2D7;
  --border-mid: #E5E5EA;
  --text:       #1D1D1F;
  --text-mid:   #3A3A3C;
  --text-soft:  #6E6E73;
  --text-xsoft: #AEAEB2;
  
  --red-50: #FFE6E8;
  --red-100: #FFB8BF;
  --red-200: #FF8A95;
  --red-300: #FF5C6C;
  --red-400: #FF2E43;
  --red-500: #FF001A;
  --red-600: #D70015;
  --red-700: #A30010;
  --red-800: #75000C;
  --red-900: #470007;
  --red-950: #1A0003;

  --green-50: #E9FCEC;
  --green-100: #C1F6C9;
  --green-200: #99F0A6;
  --green-300: #71EA83;
  --green-400: #49E460;
  --green-500: #21DE3D;
  --green-600: #1EC736;
  --green-700: #158E27;
  --green-800: #0F661C;
  --green-900: #093E11;
  --green-950: #031606;

  --blue:       #286581;
  --blue-hover: #1f5570;
  --blue-light: rgba(40, 101, 129, 0.08);
  --blue-mid:   rgba(40, 101, 129, 0.18);
  --font: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Page shell ── */
.page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 64px 20px 0;
}

.survey {
  width: 100%;
  max-width: 600px;
  padding-bottom: 60px;
}

/* ── Logo ── */
.survey-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 36px;
  opacity: 0; /* animated in by GSAP */
}

.survey-logo img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border-radius: 10px;
}

/* ── Header ── */
.survey-header {
  margin-bottom: 40px;
  text-align: center;
}

.headline {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.022em;
  color: var(--text);
  line-height: 1.15;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 8px;
}

.subheadline {
  font-size: 15px;
  color: var(--text-soft);
  line-height: 1.6;
  max-width: 480px;
  margin: 0 auto;
}

.info-btn {
  flex-shrink: 0;
  margin-top: 5px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-soft);
  font-size: 10px;
  font-family: var(--font);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s, color 0.15s;
  line-height: 1;
}

.info-btn:hover,
.info-btn:focus-visible {
  border-color: var(--blue);
  color: var(--blue);
  outline: none;
}

/* ── Section cards — floating, no hard container ── */
.section-card {
  background: var(--surface);
  border: 1px solid rgba(210, 210, 215, 0.6);
  border-radius: 18px;
  padding: 30px;
  margin-bottom: 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05), 0 1px 3px rgba(0,0,0,0.04);
  opacity: 0; /* animated in by GSAP */
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-xsoft);
  margin-bottom: 16px;
}

.field-question {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 14px;
}

.field-question .required {
  color: var(--red-600);
  margin-left: 2px;
  font-weight: 700;
}

/* ── Checkbox group (Q1) ── */
.checkbox-group {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  background: var(--surface);
  cursor: pointer;
  transition: background 0.1s;
  user-select: none;
  border-bottom: 1px solid var(--border-mid);
}

.checkbox-item:last-child { border-bottom: none; }
.checkbox-item:hover { background: #F3F8FA; }

.checkbox-item input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--border);
  border-radius: 5px;
  background: var(--surface);
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  transition: background 0.12s, border-color 0.12s;
}

.checkbox-item input[type="checkbox"]:checked {
  background: var(--blue);
  border-color: var(--blue);
}

.checkbox-item input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 2px;
  width: 5px;
  height: 9px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(43deg);
}

.checkbox-item input[type="checkbox"]:focus-visible {
  outline: 3px solid rgba(40,101,129,0.35);
  outline-offset: 1px;
}

.checkbox-label {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.3;
}

.checkbox-item.is-checked .checkbox-label { color: var(--text); }
.checkbox-group.is-invalid { outline: 1.5px solid var(--red-600); border-radius: 12px; }

/* ── Q2 & Q3: Choice-card grids ── */
.choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.choice-grid.single-col {
  grid-template-columns: 1fr;
}

.choice-card {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
  user-select: none;
  text-align: left;
  font-family: var(--font);
  width: 100%;
}

.choice-card:hover {
  border-color: var(--blue);
  background: var(--blue-light);
}

.choice-card.is-selected {
  border-color: var(--blue);
  background: var(--blue-light);
  box-shadow: 0 0 0 3px rgba(40,101,129,0.12);
}

.choice-card input[type="checkbox"],
.choice-card input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 1px;
  position: relative;
  transition: background 0.12s, border-color 0.12s;
}

.choice-card input[type="radio"] {
  border-radius: 50%;
}

.choice-card input[type="checkbox"]:checked,
.choice-card input[type="radio"]:checked {
  background: var(--blue);
  border-color: var(--blue);
}

.choice-card input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 8px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(43deg);
}

.choice-card input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  left: 3px;
  top: 3px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
}

.choice-card input[type="checkbox"]:focus-visible,
.choice-card input[type="radio"]:focus-visible {
  outline: 3px solid rgba(40,101,129,0.35);
  outline-offset: 1px;
}

.choice-card-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.choice-card-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.choice-card-desc {
  font-size: 12px;
  color: var(--text-soft);
  line-height: 1.4;
}

.choice-group-invalid .choice-card {
  border-color: rgba(215,0,21,0.3);
}

/* ─ textarea ── */
.field-textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.6;
  padding: 12px 14px;
  resize: vertical;
  min-height: 90px;
  transition: border-color 0.15s, box-shadow 0.15s;
  margin-top: 10px;
}

.field-textarea::placeholder { color: var(--text-xsoft); }
.field-textarea:focus {
  outline: none;
  border-color: rgba(40,101,129,0.5);
  box-shadow: 0 0 0 3px rgba(40,101,129,0.12);
}
.field-textarea.is-invalid { border-color: var(--red-600); }

/* ── Email section ── */
.field-input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  padding: 12px 14px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field-input::placeholder { color: var(--text-xsoft); }
.field-input:focus {
  outline: none;
  border-color: rgba(40,101,129,0.5);
  box-shadow: 0 0 0 3px rgba(40,101,129,0.12);
}

.email-section {
  background: var(--surface);
  border: 1px solid rgba(210,210,215,0.6);
  border-radius: 18px;
  padding: 30px;
  margin-bottom: 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05), 0 1px 3px rgba(0,0,0,0.04);
  opacity: 0; /* animated in by GSAP */
}

.email-section-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.email-section-desc {
  font-size: 13px;
  color: var(--text-soft);
  line-height: 1.55;
  margin-bottom: 16px;
}

.email-hint {
  font-size: 12px;
  color: var(--text-xsoft);
  margin-top: 8px;
  line-height: 1.5;
}

/* ── Errors ── */
.field-error {
  font-size: 12px;
  color: var(--red-600);
  margin-top: 8px;
  display: none;
  font-weight: 500;
}

.field-error.is-visible { display: block; }

/* ── Star rating ── */
.rating-question {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 16px;
}

.rating-question .required {
  color: var(--red-600);
  margin-left: 2px;
  font-weight: 700;
}

.stars {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
}

.star-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px;
  line-height: 0;
  border-radius: 4px;
  transition: transform 0.1s;
}

.star-btn:hover { transform: scale(1.08); }
.star-btn:active { transform: scale(0.95); }

.star-btn:focus-visible {
  outline: 3px solid rgba(40,101,129,0.35);
  outline-offset: 1px;
}

.star-icon {
  width: 28px;
  height: 28px;
  transition: fill 0.1s, stroke 0.1s;
}

.star-icon.empty   { fill: none; stroke: var(--border); stroke-width: 1.5; }
.star-icon.filled  { fill: #286581; stroke: #286581; }
.star-icon.hovered { fill: #6E6E73; stroke: #6E6E73; }

.rating-label-text {
  font-size: 12px;
  color: var(--text-soft);
  height: 16px;
}

/* ── Submit row ── */
.submit-row { margin-top: 4px; opacity: 0; }

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 28px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 980px;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  transition: background 0.15s, opacity 0.15s, transform 0.15s;
  min-width: 160px;
}

.btn-submit:hover { background: var(--blue-hover); transform: translateY(-1px); }
.btn-submit:active { opacity: 0.85; transform: translateY(0); }

.btn-submit:focus-visible {
  outline: 3px solid rgba(40,101,129,0.4);
  outline-offset: 2px;
}

.btn-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-submit .btn-text { transition: opacity 0.15s; }
.btn-submit .btn-loader {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity 0.15s;
}

.btn-submit.is-loading .btn-text   { opacity: 0; }
.btn-submit.is-loading .btn-loader { opacity: 1; }
.btn-submit.is-loading             { cursor: wait; }

.spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}

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

/* ── Footer ── */
footer {
  width: 100%;
  background: transparent;
  padding: 24px 20px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.footer-credit {
  font-size: 13px;
  color: var(--text-soft);
  text-align: center;
  line-height: 1.5;
}

/* ── Modals / overlays ── */
.overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.overlay.is-open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.14);
  transform: translateY(10px) scale(0.98);
  transition: transform 0.25s ease, opacity 0.25s;
  opacity: 0;
  position: relative;
}

.overlay.is-open .modal { transform: translateY(0) scale(1); opacity: 1; }

.modal-close {
  position: absolute; top: 14px; right: 14px;
  background: #F5F5F7;
  border: none;
  border-radius: 50%;
  color: var(--text-soft);
  width: 26px; height: 26px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.12s, color 0.12s;
}

.modal-close:hover { background: var(--border-mid); color: var(--text); }

.modal-close:focus-visible {
  outline: 3px solid rgba(40,101,129,0.35);
  outline-offset: 1px;
}

.modal-body { padding: 32px 32px 28px; }

#error-overlay{
  & .modal{
    border: 1px solid var(--red-100);
    background: var(--red-100);
    border-radius: 8px;
  }

  & h2, & p{
    color: #000;
  }

  & button{
    background: var(--red-100);
    color: #000;

    &:hover{
      background: var(--red-50);
    }
  }
}

#success-overlay{
  & .modal{
    border: 1px solid var(--green-100);
    background: var(--green-100);
  }

  & h2, & p{
    color: #000;
  }

  & button{
    background: var(--green-100);
    color: #000;

    &:hover{
      background: var(--green-50);
    }
  }
}

.modal-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 10px;
  line-height: 1.25;
  padding-right: 24px;
  display: flex;
  align-items: center;

  & .bi{
    margin-right: 8px;
  }
}

.modal-desc {
  font-size: 16px;
  color: var(--text-soft);
  line-height: 1.6;
}

.benefit-list {
  list-style: none;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.benefit-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--text-soft);
  line-height: 1.5;
}

.benefit-list li::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
  margin-top: 7px;
}

/* ── Submitted page ── */
.submitted-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 80px);
  padding: 40px 20px;
  text-align: center;
  animation: fadeUp 0.4s ease both;
}

.submitted-icon-wrap {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #EEF5F8;
  border: 1px solid rgba(40,101,129,0.25);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
}

.submitted-check {
  stroke-dasharray: 22;
  stroke-dashoffset: 22;
  animation: drawCheck 0.3s ease 0.15s forwards;
}

@keyframes drawCheck { to { stroke-dashoffset: 0; } }

.submitted-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text);
  margin-bottom: 10px;
}

.submitted-body {
  font-size: 15px;
  color: var(--text-soft);
  line-height: 1.6;
  max-width: 420px;
}

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

/* ── Responsive ── */
@media (max-width: 640px) {
  .page { padding: 44px 16px 0; }
  .headline { font-size: 23px; }
  .section-card, .email-section { padding: 22px 18px; border-radius: 14px; }
  .modal-body { padding: 24px 20px 20px; }
  .btn-submit { width: 100%; }
  .submit-row { width: 100%; }
  .choice-grid { grid-template-columns: 1fr; }
}

@media (max-width: 380px) {
  .headline { font-size: 20px; }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .section-card, .email-section, .survey-logo, .submit-row { opacity: 1 !important; transform: none !important; }
}