/*
 * Contact Form Kit — 埋め込み用 scoped CSS。
 * すべて .cfk 配下へスコープ。全画面背景・ページ全体padding・専用ヘッダ前提は持たない。
 * 同一ページに複数配置してもレイアウトが崩れないようにする（global な #button 等は不使用）。
 */

.cfk {
  --cfk-accent: #e6452e;
  --cfk-ink: #12161d;
  --cfk-muted: rgba(18, 22, 29, .64);
  --cfk-line: rgba(18, 22, 29, .18);
  --cfk-field-bg: #fff;
  --cfk-field-ink: #12161d; /* 入力欄内テキスト。白フィールドを保つためテーマで反転しない */
  --cfk-radius: 10px;
  box-sizing: border-box;
  color: var(--cfk-ink);
  max-width: 760px;
  margin-inline: auto;
}
.cfk *,
.cfk *::before,
.cfk *::after { box-sizing: border-box; }

.cfk .cfk-title {
  margin: 0 0 1rem;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--cfk-ink);
}

/* ステップ表示 */
.cfk-steps {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  counter-reset: cfk-step;
  font-size: .85rem;
}
.cfk-steps__item {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--cfk-muted);
  font-weight: 700;
}
.cfk-steps__item::before {
  counter-increment: cfk-step;
  content: counter(cfk-step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: rgba(18, 22, 29, .08);
  color: var(--cfk-muted);
  font-size: .8rem;
}
.cfk-steps__item:not(:last-child)::after {
  content: "";
  width: 1.5rem;
  height: 1px;
  background: var(--cfk-line);
  margin-left: .25rem;
}
.cfk-steps__item.is-current { color: var(--cfk-ink); }
.cfk-steps__item.is-current::before {
  background: var(--cfk-accent);
  color: #fff;
}

/* 通知・エラー */
.cfk-alert {
  border: 1px solid rgba(230, 69, 46, .4);
  background: rgba(230, 69, 46, .08);
  color: #a12414;
  border-radius: var(--cfk-radius);
  padding: .85rem 1rem;
  margin: 0 0 1rem;
  font-weight: 700;
}
.cfk-error-summary {
  border: 1px solid rgba(230, 69, 46, .4);
  background: rgba(230, 69, 46, .06);
  border-radius: var(--cfk-radius);
  padding: .85rem 1rem;
  margin: 0 0 1.25rem;
}
.cfk-error-summary__title { margin: 0 0 .5rem; font-weight: 800; color: #a12414; }
.cfk-error-summary ul { margin: 0; padding-left: 1.2rem; }
.cfk-error-summary a { color: #a12414; }

/* LP文脈 */
.cfk-context {
  border: 1px solid var(--cfk-line);
  border-left: 3px solid var(--cfk-accent);
  background: rgba(18, 22, 29, .03);
  border-radius: var(--cfk-radius);
  padding: .9rem 1.1rem;
  margin: 0 0 1.25rem;
}
.cfk-context p { margin: 0 0 .25rem; }
.cfk-context p:last-child { margin-bottom: 0; }
.cfk-context__kicker { color: var(--cfk-accent); font-weight: 800; font-size: .8rem; letter-spacing: .04em; }

/* ガイダンス・必須注記 */
.cfk-guidance {
  display: grid;
  gap: .35rem;
  border: 1px solid var(--cfk-line);
  border-radius: var(--cfk-radius);
  padding: 1rem 1.1rem;
  margin: 0 0 1rem;
  background: rgba(18, 22, 29, .02);
}
.cfk-guidance p { margin: 0; color: var(--cfk-muted); font-weight: 600; line-height: 1.7; }
.cfk-required-note { margin: 0 0 1.25rem; color: var(--cfk-muted); font-size: .9rem; font-weight: 700; }

/* フォーム本体 */
.cfk-form {
  display: grid;
  gap: 1.1rem;
}
.cfk-field { min-width: 0; display: grid; gap: .4rem; }
.cfk-label { display: block; font-weight: 700; color: var(--cfk-ink); }
.cfk-req {
  display: inline-block;
  margin-left: .4rem;
  padding: .05rem .4rem;
  font-size: .7rem;
  font-weight: 800;
  color: #fff;
  background: var(--cfk-accent);
  border-radius: 4px;
  vertical-align: middle;
}

.cfk input[type="text"],
.cfk input[type="email"],
.cfk input[type="tel"],
.cfk input[type="url"],
.cfk select,
.cfk textarea {
  width: 100%;
  min-height: 3rem;
  font-size: 16px;
  border-radius: var(--cfk-radius);
  border: 1px solid var(--cfk-line);
  background: var(--cfk-field-bg);
  color: var(--cfk-field-ink);
  padding: .75rem .9rem;
  -webkit-appearance: none;
  appearance: none;
}
.cfk input::placeholder,
.cfk textarea::placeholder { color: rgba(18, 22, 29, .45); }
.cfk textarea { min-height: 10rem; resize: vertical; line-height: 1.7; }
.cfk input:focus,
.cfk select:focus,
.cfk textarea:focus {
  outline: 2px solid rgba(230, 69, 46, .35);
  outline-offset: 1px;
  border-color: var(--cfk-accent);
}
.cfk-field--error input,
.cfk-field--error select,
.cfk-field--error textarea { border-color: var(--cfk-accent); }
.cfk-field-error { margin: 0; color: #a12414; font-weight: 700; font-size: .9rem; }

/* 選択肢 */
.cfk-fieldset { border: 0; margin: 0; padding: 0; }
.cfk-fieldset .cfk-label { margin-bottom: .3rem; }
.cfk-choices { display: flex; flex-wrap: wrap; gap: .5rem; }
.cfk-choice {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  min-height: 2.6rem;
  padding: .3rem .8rem;
  border: 1px solid var(--cfk-line);
  border-radius: var(--cfk-radius);
  background: var(--cfk-field-bg);
  color: var(--cfk-field-ink);
  cursor: pointer;
}
.cfk-choice input { margin: 0; }

/* 確認画面 */
.cfk-confirm-note { margin: 0 0 1rem; font-weight: 700; }
.cfk-review {
  display: grid;
  grid-template-columns: minmax(8rem, 12rem) 1fr;
  gap: 0;
  border: 1px solid var(--cfk-line);
  border-radius: var(--cfk-radius);
  overflow: hidden;
  margin: 0 0 1.5rem;
}
.cfk-review dt,
.cfk-review dd { margin: 0; padding: .8rem 1rem; border-top: 1px solid var(--cfk-line); }
.cfk-review dt { font-weight: 700; background: rgba(18, 22, 29, .03); }
.cfk-review dd { word-break: break-word; }
.cfk-review dt:first-of-type,
.cfk-review dd:first-of-type { border-top: 0; }

/* 完了 */
.cfk-thanks-message { margin: 0 0 1.25rem; line-height: 1.8; }

/* アクション・ボタン */
.cfk-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1rem; }
.cfk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  padding: .8rem 1.8rem;
  font-size: 1rem;
  font-weight: 800;
  border-radius: var(--cfk-radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.2;
}
.cfk-btn--primary { background: var(--cfk-accent); color: #fff; }
.cfk-btn--primary:hover { background: #cf3a25; color: #fff; }
.cfk-btn--secondary { background: transparent; color: var(--cfk-ink); border-color: var(--cfk-line); }
.cfk-btn--secondary:hover { background: rgba(18, 22, 29, .05); }
.cfk-btn[disabled] { opacity: .6; cursor: default; }

/* ハニーポット（画面外） */
.cfk-honeypot {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

@media (max-width: 600px) {
  .cfk-review { grid-template-columns: 1fr; }
  .cfk-review dt { border-top: 1px solid var(--cfk-line); }
  .cfk-review dd { padding-top: 0; }
  .cfk-actions .cfk-btn { width: 100%; }
}

/* =========================================================================
 * テーマ：ダーク背景サイト向け。文字系の変数だけ反転し、入力欄は白を維持する
 * （--cfk-field-ink / --cfk-field-bg は据え置き）。
 * ========================================================================= */
.cfk.cfk--on-dark {
  --cfk-ink: #f3f5f7;
  --cfk-muted: rgba(243, 245, 247, .72);
  --cfk-line: rgba(243, 245, 247, .24);
}
.cfk.cfk--on-dark .cfk-steps__item::before { background: rgba(243, 245, 247, .16); }
.cfk.cfk--on-dark .cfk-guidance,
.cfk.cfk--on-dark .cfk-context { background: rgba(243, 245, 247, .06); }
.cfk.cfk--on-dark .cfk-review dt { background: rgba(243, 245, 247, .06); }
/* 暗背景で沈むエラー/注意色を明るい赤へ */
.cfk.cfk--on-dark .cfk-field-error,
.cfk.cfk--on-dark .cfk-error-summary__title,
.cfk.cfk--on-dark .cfk-error-summary a,
.cfk.cfk--on-dark .cfk-alert { color: #ff6b57; }

/* テーマ：auto（OS がダークのときだけ on-dark と同じ値を適用） */
@media (prefers-color-scheme: dark) {
  .cfk.cfk--auto {
    --cfk-ink: #f3f5f7;
    --cfk-muted: rgba(243, 245, 247, .72);
    --cfk-line: rgba(243, 245, 247, .24);
  }
  .cfk.cfk--auto .cfk-steps__item::before { background: rgba(243, 245, 247, .16); }
  .cfk.cfk--auto .cfk-guidance,
  .cfk.cfk--auto .cfk-context { background: rgba(243, 245, 247, .06); }
  .cfk.cfk--auto .cfk-review dt { background: rgba(243, 245, 247, .06); }
  .cfk.cfk--auto .cfk-field-error,
  .cfk.cfk--auto .cfk-error-summary__title,
  .cfk.cfk--auto .cfk-error-summary a,
  .cfk.cfk--auto .cfk-alert { color: #ff6b57; }
}