/* ===== Root scope (only under .sd-inq) ===== */
.sd-inq {
  /* Color & surface */
  --card-bg: #fff;
  --card-radius: 16px;
  --card-shadow: 0 4px 20px rgba(0,0,0,0.06);
  --section-bg: #f7f7f8;
  --section-border: #ececec;

  --label: #222;
  --hint: #8a8fa1;
  --text: #111;
  --muted: #666;

  --primary: #1a73e8;
  --primary-hover: #155fc0;
  --danger: #d93025;
  --success: #1e8e3e;

  --badge-req-bg: #ffe5e5;
  --badge-req-tx: #b40000;
  --badge-opt-bg: #eef4ff;
  --badge-opt-tx: #3a5bdc;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;

  /* Layout */
  max-width: 960px;
  margin: 0 auto;
  padding: calc(var(--space-8) + 64px) var(--space-4) var(--space-6); /* 固定ヘッダ考慮 */
  box-sizing: border-box;

  /* Typography baseline */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Card */
.sd-inq__card {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: var(--space-7) var(--space-7) var(--space-8);
}

/* Header */
.sd-inq__header { margin-bottom: var(--space-2); }
.sd-inq__title {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  letter-spacing: .02em;
  margin: 0 0 var(--space-2);
  line-height: 1.3;
}
.sd-inq__note {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 var(--space-4);
  line-height: 1.6;
}

/* Section */
.sd-inq__fieldset {
  background: var(--section-bg);
  border: 1px solid var(--section-border);
  border-radius: 12px;
  padding: var(--space-6);
  margin: var(--space-5) 0;
}
.sd-inq__legend {
  font-weight: 700;
  color: var(--label);
  padding: 0 var(--space-2);
  font-size: 15px;
  margin-bottom: var(--space-3);
}

/* Grid */
.sd-inq__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4) var(--space-5); /* 行間をやや広めに */
}
@media (max-width: 768px) { .sd-inq__grid { grid-template-columns: 1fr; } }

/* Field */
.sd-inq__field { display: flex; flex-direction: column; gap: var(--space-2); }
.sd-inq__field--full { grid-column: 1 / -1; }

.sd-inq__label {
  font-size: 14px;
  color: var(--label);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  line-height: 1.5;
}
.sd-inq__hint { font-size: 12px; color: var(--hint); margin-top: 2px; }

/* Input controls */
.sd-inq input[type="text"],
.sd-inq input[type="email"],
.sd-inq input[type="tel"],
.sd-inq textarea,
.sd-inq select {
  width: 100%;
  font-size: 15px;
  line-height: 1.6;
  padding: 12px 14px;
  border: 1px solid #ddd;
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: box-shadow .15s ease, border-color .15s ease;
  box-sizing: border-box;
}
.sd-inq textarea { min-height: 120px; resize: vertical; }
.sd-inq input:focus,
.sd-inq textarea:focus,
.sd-inq select:focus {
  border-color: #c9dcff;
  box-shadow: 0 0 0 3px rgba(122,168,255,.25);
}

/* ===== Choice chips (checkbox / radio) ===== */
.sd-inq__choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3) var(--space-4);
  margin-top: var(--space-2);
}
@media (max-width: 640px) { .sd-inq__choices { grid-template-columns: 1fr; } }

.sd-inq__choice {
  position: relative;
  display: inline-flex;
  align-items: center;
  user-select: none;
}

.sd-inq__choice input {
  position: absolute;
  inset: 0;           /* ラベル全体=ヒットエリア */
  opacity: 0;
  cursor: pointer;
}

.sd-inq__choice span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  min-height: 44px;               /* タップ領域を拡大 */
  padding: 12px 14px;
  border-radius: 9999px;
  background: #fff;
  border: 1px solid #ddd;
  color: var(--text);
  font-size: 15px;
  line-height: 1.4;
  transition: background .15s ease, border-color .15s ease, box-shadow .15s ease, color .15s ease;
  box-sizing: border-box;
}

.sd-inq__choice:hover span { border-color: #cfd8ea; background: #fafbff; }

.sd-inq__choice input:focus-visible + span {
  box-shadow: 0 0 0 3px rgba(122,168,255,.25);
  border-color: #c9dcff;
}

/* 左側のインジケーター点 */
.sd-inq__choice span::before {
  content: "";
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 2px solid #b8c1d1;
  background: #fff;
  flex: 0 0 auto;
  transition: background .15s ease, border-color .15s ease;
}

.sd-inq__choice input:checked + span {
  background: var(--badge-opt-bg);
  border-color: #b8ccff;
  color: #2a47a4;
}
.sd-inq__choice input:checked + span::before {
  border-color: #2a47a4; background: #2a47a4;
}

/* 単一/複数で微妙にトーン差 */
.sd-inq__choices--single .sd-inq__choice input:checked + span { background: #eef4ff; }
.sd-inq__choices--multi  .sd-inq__choice input:checked + span {
  background: #eef7f0; border-color: #cde8d3; color: #1a6a3a;
}
.sd-inq__choices--multi  .sd-inq__choice input:checked + span::before {
  border-color: #1a6a3a; background: #1a6a3a;
}

/* Confirm */
.sd-inq__confirm {
  display: flex; align-items: center;
  gap: var(--space-3);
  font-size: 14px; color: var(--text);
  line-height: 1.5;
}

/* Badge */
.sd-inq__badge {
  display: inline-block;
  padding: 3px 6px;
  border-radius: 6px;
  font-size: 11px;
  line-height: 1;
  vertical-align: middle;
}
.sd-inq__badge--req { background: var(--badge-req-bg); color: var(--badge-req-tx); border: 1px solid #ffd0d0; }
.sd-inq__badge--opt { background: var(--badge-opt-bg); color: var(--badge-opt-tx); border: 1px solid #d9e4ff; }

/* Message */
.sd-inq__message {
  margin: var(--space-4) 0 0;
  padding: var(--space-3) var(--space-4);
  border-radius: 8px;
  font-size: 14px;
}
.sd-inq__message.info    { background: #eef6ff; color: #214a83; border: 1px solid #d9e9ff; }
.sd-inq__message.success { background: #ecf7ef; color: var(--success); border: 1px solid #d5f0dc; }
.sd-inq__message.error   { background: #ffecec; color: var(--danger);  border: 1px solid #ffd3d3; }

/* Actions & Button */
.sd-inq__actions { margin-top: var(--space-6); display: flex; gap: var(--space-3); }
.sd-inq__button {
  appearance: none;
  border: none;
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s ease, transform .02s ease;
}
.sd-inq__button--primary { color: #fff; background: var(--primary); }
.sd-inq__button--primary:hover { background: var(--primary-hover); }
.sd-inq__button:active { transform: translateY(1px); }
.sd-inq__button:disabled { opacity: .6; cursor: not-allowed; }

/* Invalid (HTML5) */
.sd-inq input:invalid, .sd-inq textarea:invalid, .sd-inq select:invalid {
  border-color: #f3b7b3; background: #fffafa;
}

/* Fine tunings */
.sd-inq__fieldset > .sd-inq__field + .sd-inq__field { margin-top: var(--space-3); }
.sd-inq__fieldset + .sd-inq__fieldset { margin-top: var(--space-6); }