.survey-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity .3s ease;
}
.survey-overlay--visible { opacity: 1; }

.sv-card {
  background: #ffffff;
  border: 1px solid rgba(0,0,0,.07);
  border-radius: 24px;
  width: 100%;
  max-width: 480px;
  padding: 32px 36px 36px;
  box-shadow: 0 24px 80px rgba(0,0,0,.18);
  position: relative;
  overflow: hidden;
}
.sv-card::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 220px; height: 220px;
  background: radial-gradient(circle, rgba(28,200,140,.10) 0%, transparent 70%);
  pointer-events: none;
}

/* top row */
.sv-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}
.sv-progress-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sv-progress-label {
  font-size: 12px;
  color: #9a9aaa;
  letter-spacing: .04em;
}
.sv-progress-track {
  height: 5px;
  background: rgba(0,0,0,.08);
  border-radius: 99px;
  overflow: hidden;
}
.sv-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #1cf1ab, #0fd490);
  border-radius: 99px;
  transition: width .5s cubic-bezier(.4,0,.2,1);
}
.sv-btn-skip {
  flex-shrink: 0;
  background: rgba(0,0,0,.04);
  border: 1px solid rgba(0,0,0,.1);
  color: #8a8a9a;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 9px;
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
  white-space: nowrap;
}
.sv-btn-skip:hover {
  background: rgba(0,0,0,.07);
  color: #606070;
  border-color: rgba(0,0,0,.18);
}

/* heading */
.sv-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #9ca3af;
  margin-bottom: 8px;
}
.sv-question {
  font-size: 22px;
  font-weight: 700;
  color: #111118;
  line-height: 1.3;
  margin-bottom: 28px;
}

.sv-options-list { display: flex; flex-direction: column; gap: 10px; }
.sv-option {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: 14px;
  border: 1.5px solid rgba(0,0,0,.09);
  background: #fafafa;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  user-select: none;
}
.sv-option:hover {
  border-color: rgba(15,180,120,.4);
  background: rgba(15,180,120,.05);
}
.sv-option--selected {
  border-color: #0fc98a;
  background: rgba(15,201,138,.08);
}
.sv-checkbox {
  width: 22px; height: 22px;
  border-radius: 7px;
  border: 2px solid rgba(0,0,0,.18);
  background: transparent;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color .2s, background .2s;
}
.sv-option--selected .sv-checkbox {
  border-color: #0fc98a;
  background: #0fc98a;
}
.sv-checkbox svg { opacity: 0; transform: scale(.5); transition: opacity .2s, transform .25s cubic-bezier(.34,1.56,.64,1); }
.sv-option--selected .sv-checkbox svg { opacity: 1; transform: scale(1); }
.sv-option-label {
  font-size: 15px;
  font-weight: 500;
  color: #444455;
  transition: color .2s;
}
.sv-option--selected .sv-option-label { color: #111118; }

/* continue button */
.sv-btn-continue {
  margin-top: 28px;
  width: 100%;
  padding: 15px;
  border-radius: 14px;
  border: none;
  background: linear-gradient(135deg, #1cf1ab 0%, #0fd490 100%);
  color: #0a1a14;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity .2s, transform .15s, box-shadow .2s;
  box-shadow: 0 8px 28px rgba(15,201,138,.28);
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
}
.sv-btn-continue--visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.sv-btn-continue:hover {
  box-shadow: 0 12px 36px rgba(15,201,138,.42);
  transform: translateY(-1px);
}

/* step transitions */
.sv-step { transition: opacity .35s ease, transform .35s cubic-bezier(.4,0,.2,1); }
.sv-step--exit { opacity: 0; transform: translateX(-30px); pointer-events: none; }
.sv-step--enter { opacity: 0; transform: translateX(30px); }
.sv-step--enter-active { opacity: 1; transform: translateX(0); }

/* done screen */
.sv-done { text-align: center; padding: 20px 0 8px; }
.sv-done-icon {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: rgba(15,201,138,.12);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  animation: svPopIn .5s cubic-bezier(.34,1.56,.64,1) forwards;
}
@keyframes svPopIn {
  from { transform: scale(.4); opacity: 0; }
  to   { transform: scale(1);  opacity: 1; }
}
.sv-done-title {
  font-size: 22px; font-weight: 700; color: #111118; margin-bottom: 10px;
}
.sv-done-sub {
  font-size: 14px; color: #7a7a8a; line-height: 1.6;
}