:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --border: #dfe7f1;
  --text: #1f2937;
  --muted: #65758a;
  --primary: #2f67ff;
  --primary-dark: #224fdd;
  --primary-soft: rgba(47, 103, 255, 0.08);
  --success: #1fa76a;
  --success-soft: rgba(31, 167, 106, 0.1);
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", "Noto Sans JP", sans-serif;
  background: linear-gradient(180deg, #eef4ff 0%, var(--bg) 100%);
  color: var(--text);
}

.page-shell {
  width: min(100%, 960px);
  margin: 0 auto;
  padding: 56px 20px;
}

.survey-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 36px 32px;
}

.survey-header {
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 2.4vw, 2.8rem);
  letter-spacing: -0.05em;
}

.subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

form {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.section-block {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
}

.section-block h2 {
  margin: 0 0 18px;
  font-size: 1.2rem;
}

.field-grid {
  display: grid;
  gap: 18px;
}

.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field,
.rating-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.field span,
.rating-field legend {
  font-weight: 600;
  line-height: 1.5;
}

.field em {
  color: #d64545;
  font-style: normal;
}

input,
select,
textarea,
button {
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  padding: 12px 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(47, 103, 255, 0.8);
  box-shadow: 0 0 0 4px rgba(47, 103, 255, 0.08);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.rating-field {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.7);
  padding: 18px 16px;
}

.rating-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.rating-group label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.rating-group input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.rating-group label:has(input:checked) {
  background: var(--primary-soft);
  border-color: rgba(47, 103, 255, 0.4);
  color: var(--primary-dark);
}

.submit-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.submit-btn {
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #4d7dff);
  color: #fff;
  padding: 14px 28px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 14px 26px rgba(47, 103, 255, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.submit-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 28px rgba(47, 103, 255, 0.3);
}

.submit-btn:disabled {
  cursor: wait;
  opacity: 0.8;
}

.submit-status {
  min-height: 24px;
  margin: 0;
  font-weight: 600;
}

.submit-status.pending {
  color: var(--primary-dark);
}

.submit-status.success {
  color: var(--success);
}

.submit-status.error {
  color: #d64545;
}

.result-panel {
  display: block;
  margin-top: 12px;
  border: 1px solid var(--border);
  background: var(--surface-alt);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.04);
}

.preview-box {
  overflow: hidden;
}

@media (max-width: 720px) {
  .survey-card {
    padding: 24px 18px;
  }

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

  .section-block {
    padding: 18px 16px;
  }
}