.questionnaire-page {
  padding: 128px 0 88px;
  background:
    linear-gradient(rgba(245, 247, 250, 0.9), rgba(245, 247, 250, 0.96)),
    url("../assets/images/zju-campus.jpg") center / cover fixed no-repeat;
}

.questionnaire-shell {
  max-width: 880px;
  margin: 0 auto;
}

.questionnaire-hero {
  margin-bottom: 26px;
  text-align: center;
}

.questionnaire-hero .section-title {
  font-size: clamp(40px, 6vw, 76px);
}

.questionnaire-hero .body-copy {
  max-width: 660px;
  margin: 20px auto 0;
}

.form-shell,
.result-panel {
  padding: 34px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

.progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
  color: var(--color-secondary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.progress-track {
  height: 9px;
  overflow: hidden;
  background: #dce5ec;
  border-radius: 8px;
}

.progress-bar {
  width: 4%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: inherit;
  transition: width 260ms ease;
}

.question-card {
  min-height: 330px;
  margin: 28px 0 0;
  padding: 30px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.question-card legend,
.review-card h2 {
  margin: 0 0 24px;
  color: var(--color-primary);
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: 0;
}

.control {
  width: 100%;
  min-height: 54px;
  padding: 14px 16px;
  color: var(--color-text);
  background: #f7f9fb;
  border: 1px solid rgba(24, 53, 47, 0.18);
  border-radius: 8px;
  font-size: 16px;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.control:focus {
  background: #fff;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(197, 165, 106, 0.2);
}

textarea.control {
  min-height: 170px;
  resize: vertical;
}

.help-text {
  margin: 10px 0 0;
  color: var(--color-secondary);
  font-size: 13px;
}

.option-list {
  display: grid;
  gap: 12px;
}

.option-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 14px 16px;
  background: #f7f9fb;
  border: 1px solid rgba(24, 53, 47, 0.14);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.option-row:hover {
  background: #fff;
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.option-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
}

.consent-row {
  align-items: flex-start;
  line-height: 1.5;
}

.question-error {
  margin: 18px 0 0;
  padding: 12px 14px;
  color: var(--color-error);
  background: rgba(180, 35, 24, 0.08);
  border: 1px solid rgba(180, 35, 24, 0.18);
  border-radius: 8px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 14px;
  margin-top: 24px;
}

#prevBtn:not([hidden]) {
  margin-right: auto;
}

.review-card p {
  margin-top: -10px;
  color: var(--color-secondary);
}

.review-list {
  display: grid;
  gap: 0;
  margin: 24px 0 0;
}

.review-row {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 18px;
  padding: 16px 0;
  border-top: 1px solid var(--color-border);
}

.review-row dt {
  color: var(--color-primary);
  font-weight: 800;
}

.review-row dd {
  margin: 0;
  color: var(--color-secondary);
}

.honeypot {
  position: absolute;
  left: -100vw;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.result-panel {
  text-align: center;
}

.result-icon {
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  margin: 0 auto 22px;
  color: #fff;
  background: var(--color-success);
  border-radius: 8px;
  font-size: 26px;
  font-weight: 800;
}

.result-panel h2 {
  margin: 0;
  color: var(--color-primary);
  font-family: var(--serif);
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 400;
  line-height: 1;
}

.result-panel p {
  max-width: 560px;
  margin: 18px auto 26px;
  color: var(--color-secondary);
}

@media (max-width: 767px) {
  .questionnaire-page {
    padding: 106px 0 54px;
  }

  .form-shell,
  .result-panel {
    padding: 20px;
  border-radius: 8px;
    box-shadow: none;
  }

  .question-card {
    min-height: 250px;
    padding: 22px;
    border-radius: 8px;
  }

  .form-actions {
    flex-direction: column-reverse;
  }

  .review-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}