.survey { background: var(--survey-bg); color: var(--ink); padding-block: var(--section-pad); }
.survey__wrap { display: grid; gap: clamp(2.5rem, 5vw, 4rem); }
.survey__intro { max-width: 900px; margin-inline: auto; }
.survey__intro h2 { margin-top: 1rem; }
.survey__intro h2.survey__title--flush { margin-top: 0; }
.survey__desc { margin-top: 1rem; color: var(--ink-soft); max-width: 62ch; }

.survey__panel {
  width: 100%;
  background: var(--paper-raised);
  border-radius: var(--r-lg, 26px);
  box-shadow: 0 24px 60px -28px rgba(23, 32, 28, 0.16), 0 6px 20px -8px rgba(23, 32, 28, 0.08);
  padding: clamp(2rem, 5vw, 3.5rem);
  max-width: 780px;
  margin-inline: auto;
}

@media (min-width: 1200px) {
  .survey__panel { max-width: 900px; }
  .survey__question h3 { max-width: 34ch; }
}

.survey__progress {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 2.4rem;
}
.survey__drop-anim { display: block; }
.survey__drop-anim svg { display: block; }
.survey__count {
  font-family: var(--font-display); font-size: var(--step-caption); letter-spacing: 0.08em;
  color: var(--moss); text-transform: uppercase;
}

/* ---- fixed water-level drop indicator ---- */
.drop-outline { stroke: #93aab3; stroke-width: 1.75; }

.drop-water-level {
  transform-box: fill-box;
  transform-origin: bottom;
  transform: scaleY(0);
  transition: transform 700ms cubic-bezier(0.4, 0, 0.2, 1);
}
.drop-water-shape { fill: url(#survey-water-grad); }

.drop-water-wave {
  animation: surveyWaveDrift 3.4s linear infinite;
}
@keyframes surveyWaveDrift {
  0%   { transform: translate(0, 0); }
  50%  { transform: translate(-30px, -1.2px); }
  100% { transform: translate(-60px, 0); }
}

.drop-bubble {
  fill: #eaf9fc;
  opacity: 0;
  animation: surveyBubbleRise 3.6s ease-in infinite;
}
.drop-bubble--2 { animation-delay: 1.1s; animation-duration: 4.1s; }
.drop-bubble--3 { animation-delay: 2.2s; animation-duration: 3.2s; }
@keyframes surveyBubbleRise {
  0%   { transform: translateY(0); opacity: 0; }
  15%  { opacity: 0.4; }
  85%  { opacity: 0.22; }
  100% { transform: translateY(-26px); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .drop-water-wave, .drop-bubble { animation: none !important; }
  .drop-water-level { transition: none !important; }
}

.survey__question { min-height: 280px; display: flex; flex-direction: column; gap: 1rem; }
.survey__question h3 { max-width: 26ch; }
.survey__help { margin-top: -0.4rem; }
.survey__optional-tag {
  font-family: var(--font-display); font-size: var(--step-caption); text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--moss);
}

.survey__options { display: flex; flex-direction: column; gap: 0.7rem; margin-top: 0.6rem; }
.survey__option {
  position: relative;
  display: flex; align-items: center; gap: 1rem;
  padding: 1rem 1.15rem;
  border-radius: var(--r-sm, 14px);
  border: 1px solid var(--line);
  background: var(--paper);
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.survey__option:hover {
  border-color: var(--turquoise);
  box-shadow: 0 6px 18px -10px rgba(47, 143, 196, 0.35);
}
.survey__option:has(input:checked) {
  border-color: var(--turquoise);
  background: var(--ice);
}
.survey__option input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.survey__option-mark {
  width: 19px; height: 19px; border: 1.5px solid var(--line); flex-shrink: 0;
  border-radius: 6px;
  position: relative; transition: border-color var(--dur-fast) var(--ease);
}
input[type="radio"] + .survey__option-mark { border-radius: 50%; }
.survey__option input:checked + .survey__option-mark { border-color: var(--turquoise); }
.survey__option input:checked + .survey__option-mark::after {
  content: ""; position: absolute; inset: 4px; background: var(--turquoise); border-radius: 3px;
}
input[type="radio"] + .survey__option-mark::after { border-radius: 50%; }
.survey__option:hover .survey__option-mark { border-color: var(--turquoise); }
.survey__option input:focus-visible + .survey__option-mark { outline: 2px solid var(--turquoise); outline-offset: 3px; }

.survey__input, .survey__textarea {
  width: 100%; background: var(--paper); border: 1px solid var(--line); color: inherit;
  border-radius: var(--r-sm, 14px);
  padding: 1rem 1.15rem; margin-top: 0.6rem; font-size: var(--step-body);
  transition: border-color var(--dur-fast) var(--ease);
}
.survey__input:focus-visible, .survey__textarea:focus-visible { outline: none; border-color: var(--turquoise); }
.survey__textarea { resize: vertical; }
.survey__input::placeholder, .survey__textarea::placeholder { color: var(--ink-soft); opacity: 0.6; }

.survey__select {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  padding-right: 2.6rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 4.5L6 8l3.5-3.5' fill='none' stroke='%234a534c' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1.1rem center;
  background-size: 11px;
}
.survey__select:invalid,
.survey__select option[value=""] { color: var(--ink-soft); }

.survey__error { color: var(--warn); font-size: var(--step-caption); margin-top: 1rem; }
.survey__nav { display: flex; justify-content: space-between; align-items: center; margin-top: 2.6rem; }
.survey__nav .btn { border-radius: var(--r-xs, 12px); }
.survey__back { color: var(--ink); border-color: var(--line); }
.survey__nav .btn--solid:hover { background: color-mix(in srgb, var(--moss), white 14%); }

.survey__success { max-width: 34ch; padding-block: 1.5rem; }
.survey__success h3 { font-size: var(--step-h2); margin-bottom: 0.8rem; }
.survey__success p + p { margin-top: 0.8rem; }
.survey__success-mark {
  display: block; width: 36px; height: 36px; border: 1.5px solid var(--moss);
  border-radius: 50%; margin-bottom: 1.8rem; position: relative;
}
.survey__success-mark::after {
  content: ""; position: absolute; inset: 9px; background: var(--moss); border-radius: 50%;
}