/* ============================================================
   style.css — 見た目の設定
   ============================================================
   色を変えたい場合は、下の :root { } の中の色（#から始まる文字）を
   書き換えてください。ページ全体の色が変わります。
   ============================================================ */

:root {
  /* 色（大人ピンク×アイボリー系。彩度は競合参考に引き上げ済み） */
  --color-bg: #fdfaf7;
  --color-bg-soft: #fbeeec;
  --color-primary: #d03f64;
  --color-primary-dark: #b02c52;
  --color-accent-light: #f7dfe0;
  --color-text: #3d322f;
  --color-text-muted: #8a7972;
  --color-border: #f0dfdc;
  --color-card-shadow: rgba(208, 63, 100, 0.22);

  /* 形 */
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;

  /* 余白の基準 */
  --gap: clamp(1rem, 3vw, 2rem);

  /* フォント（システムフォント。追加の読み込みなしで日本語が読みやすい） */
  --font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic UI", "Yu Gothic", "Noto Sans JP", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  word-break: break-word;
}

@media (min-width: 768px) {
  body {
    font-size: 17px;
  }
}

img, video {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

/* スクリーンリーダー用スキップリンク */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75em 1.25em;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 100;
}
.skip-link:focus {
  left: 0;
}

/* フォーカス時のアウトライン（アクセシビリティ確保） */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-primary-dark);
  outline-offset: 2px;
}

/* ============================================================
   共通レイアウト
============================================================ */

.section {
  padding: clamp(3rem, 8vw, 5.5rem) 1.25rem;
}

.section--soft {
  background: var(--color-bg-soft);
}

.section__inner {
  max-width: 720px;
  margin: 0 auto;
}

.section__heading {
  font-size: clamp(1.5rem, 4.5vw, 2rem);
  line-height: 1.5;
  text-align: center;
  margin: 0 0 1.5rem;
  font-weight: 700;
}

.section__desc {
  text-align: center;
  color: var(--color-text-muted);
  margin: -0.5rem 0 2rem;
}

.prose p {
  margin: 0 0 1.4em;
}

.prose p:last-child {
  margin-bottom: 0;
}

/* スクロールで軽くフェードインする演出（過度なアニメーションは使わない） */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ============================================================
   ボタン
============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  border: none;
  border-radius: 999px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  padding: 0.9em 1.6em;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: linear-gradient(160deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 14px 26px -8px var(--color-card-shadow);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
}

.btn--outline {
  background: #fff;
  color: var(--color-primary-dark);
  border: 2px solid var(--color-accent-light);
}
.btn--outline:hover {
  border-color: var(--color-primary);
}

.btn--large {
  width: 100%;
  max-width: 360px;
  padding: 1.1em 1.6em;
  font-size: 1.05rem;
}

/* ============================================================
   1. ファーストビュー（ヒーロー）
============================================================ */

.hero {
  padding: clamp(3.5rem, 12vw, 6rem) 1.25rem clamp(3rem, 8vw, 4.5rem);
  background: linear-gradient(180deg, var(--color-accent-light) 0%, #ffffff 100%);
  text-align: center;
}

.hero__inner {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__label {
  display: inline-block;
  background: #fff;
  color: var(--color-primary-dark);
  border: 1px solid var(--color-accent-light);
  border-radius: 999px;
  padding: 0.4em 1.1em;
  font-size: 0.85rem;
  font-weight: 700;
  margin: 0 0 1.5rem;
}

.hero__title {
  font-size: clamp(1.9rem, 7vw, 2.6rem);
  line-height: 1.45;
  margin: 0 0 1rem;
  font-weight: 800;
  color: var(--color-text);
}

.hero__subtitle {
  font-size: clamp(1.2rem, 4.5vw, 1.5rem);
  line-height: 1.6;
  margin: 0 0 1.5rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.hero__desc {
  color: var(--color-text-muted);
  margin: 0 0 2.25rem;
}

/* ============================================================
   チェックリスト
============================================================ */

.check-list {
  list-style: none;
  margin: 0 0 1.4em;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6em;
}

.check-list li {
  position: relative;
  padding-left: 1.8em;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* ============================================================
   カード（グリッド）
============================================================ */

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  box-shadow: 0 12px 28px -18px var(--color-card-shadow);
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background: var(--color-accent-light);
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.card__title {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.card__desc {
  margin: 0;
  color: var(--color-text-muted);
}

/* ============================================================
   STEP セクション
============================================================ */

.step__number {
  text-align: center;
  color: var(--color-primary);
  font-weight: 800;
  letter-spacing: 0.08em;
  margin: 0 0 0.5rem;
}

.step__title {
  text-align: center;
  font-size: clamp(1.35rem, 4.5vw, 1.75rem);
  margin: 0 0 1.75rem;
  font-weight: 800;
}

.note-box {
  margin-top: 1.75rem;
  background: var(--color-accent-light);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.4rem;
}

.note-box__label {
  font-weight: 800;
  color: var(--color-primary-dark);
  margin: 0 0 0.5em;
}

.note-box p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   プロンプトボックス（コピー機能）
============================================================ */

.prompt-box,
.question-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 12px 28px -18px var(--color-card-shadow);
}

.prompt-box__text,
.question-card__text {
  font-family: inherit;
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--color-bg-soft);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.2rem;
  margin: 0 0 1.25rem;
  color: var(--color-text);
  font-size: 0.95rem;
  line-height: 1.8;
}

.copy-btn {
  width: 100%;
  position: relative;
}

.copy-btn__done {
  display: none;
}

.copy-btn.is-copied .copy-btn__label {
  display: none;
}
.copy-btn.is-copied .copy-btn__done {
  display: inline;
}
.copy-btn.is-copied {
  background: #2fae6a;
}
.btn--outline.copy-btn.is-copied {
  background: #eafaf1;
  color: #1f8a53;
  border-color: #bfe9d2;
}

/* ============================================================
   CTA カード
============================================================ */

.cta-card {
  background: var(--color-accent-light);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 6vw, 3rem) clamp(1.5rem, 6vw, 2.5rem);
  text-align: center;
}

.cta-card__heading {
  font-size: clamp(1.4rem, 4.5vw, 1.9rem);
  margin: 0 0 1.5rem;
  font-weight: 800;
}

.cta-card__highlight {
  color: var(--color-primary-dark);
  font-size: 1.1em;
}

.cta-card .btn {
  margin-top: 1rem;
}

/* ============================================================
   番号付きステップ
============================================================ */

.numbered-steps {
  margin: 0 0 1.75rem;
  padding-left: 1.4em;
  display: flex;
  flex-direction: column;
  gap: 0.7em;
}

.numbered-steps li {
  padding-left: 0.3em;
}

.numbered-steps code,
.prose code {
  background: var(--color-bg-soft);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-size: 0.9em;
}

/* ============================================================
   アコーディオン
============================================================ */

.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.accordion-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-item__question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font: inherit;
  font-weight: 700;
  color: var(--color-text);
  padding: 1.1rem 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.accordion-item__question::after {
  content: "+";
  flex: none;
  color: var(--color-primary);
  font-size: 1.3rem;
  font-weight: 400;
  transition: transform 0.2s ease;
}

.accordion-item__question[aria-expanded="true"]::after {
  transform: rotate(45deg);
}

.accordion-item__answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.25s ease;
}

.accordion-item__answer > p {
  overflow: hidden;
  margin: 0;
  padding: 0 1.3rem;
  color: var(--color-text-muted);
}

.accordion-item__question[aria-expanded="true"] + .accordion-item__answer {
  grid-template-rows: 1fr;
}

.accordion-item__question[aria-expanded="true"] + .accordion-item__answer > p {
  padding: 0 1.3rem 1.2rem;
}

/* ============================================================
   フッター
============================================================ */

.footer {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  padding: 2.5rem 1.25rem 3rem;
  line-height: 1.8;
}

.footer p {
  margin: 0.25em 0;
}

/* ============================================================
   今回追加：STEPの流れ・バッジ・柄の例・アレンジ・完成メッセージ
============================================================ */

.flow {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

.flow__item {
  width: 100%;
  background: #fff;
  border: 1px solid var(--color-accent-light);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  box-shadow: 0 12px 28px -18px var(--color-card-shadow);
  font-weight: 700;
}

.flow__step {
  display: block;
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.flow__arrow {
  color: var(--color-primary);
  line-height: 1;
}

.pattern-list {
  list-style: none;
  margin: 0 0 1.4em;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6em;
}

.pattern-list li {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.7em 1.1em;
}

.pattern-list code {
  background: var(--color-bg-soft);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-size: 0.9em;
}

.card__title code {
  font-size: 0.95em;
}

.quote-box {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 0 0 1.5rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  text-align: center;
}

.accordion-item__answer > p strong {
  color: var(--color-text);
}

.done {
  background: linear-gradient(180deg, #ffffff 0%, var(--color-accent-light) 100%);
  text-align: center;
}

.done__emoji {
  font-size: 2.4rem;
  margin: 0 0 0.5rem;
}

.done__quote {
  font-size: clamp(1.1rem, 4vw, 1.3rem);
  font-weight: 800;
  color: var(--color-primary-dark);
}

.cta-card__note {
  margin: 0.9rem 0 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

[hidden] {
  display: none !important;
}

.cta-card__banner-link {
  display: block;
  margin-top: 1.25rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 12px 28px -14px var(--color-card-shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.cta-card__banner-link:hover {
  transform: scale(1.015);
  box-shadow: 0 16px 32px -14px var(--color-card-shadow);
}

.cta-card__banner-img {
  display: block;
  width: 100%;
  height: auto;
}

.cta-card__contents {
  display: block;
  width: 100%;
  aspect-ratio: 1855 / 848;
  object-fit: contain;
  height: auto;
  margin: 1.5rem 0;
  border-radius: var(--radius-md);
  box-shadow: 0 12px 28px -18px var(--color-card-shadow);
}

/* 画面下に常時表示するLINEボタン */
.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  padding: 0.6rem 1rem calc(0.6rem + env(safe-area-inset-bottom));
  background: rgba(253, 250, 247, 0.94);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: center;
  /* 初期は隠す。script.js が is-visible を付け外しする */
  opacity: 0;
  transform: translateY(100%);
  pointer-events: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.sticky-cta.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.sticky-cta__btn {
  width: 100%;
  max-width: 460px;
  padding: 0.85em 1.2em;
  font-size: 0.95rem;
  line-height: 1.5;
  text-align: center;
  /* LINEとひと目で分かる緑（このボタンだけ。ページ全体の配色は変えない） */
  background: #039c45;
  box-shadow: 0 10px 22px -8px rgba(3, 156, 69, 0.5);
}
.sticky-cta__btn:hover {
  background: #028a3d;
}

.sticky-cta__icon {
  flex: none;
  width: 1.5em;
  height: 1.5em;
}

/* 固定ボタンにフッターが隠れないようにする */
body {
  padding-bottom: 5rem;
}

/* 固定ボタンをゆっくり脈打たせて目に留まりやすくする（控えめな動き） */
@keyframes sticky-cta-pulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 10px 22px -8px rgba(3, 156, 69, 0.5);
  }
  50% {
    transform: scale(1.04);
    box-shadow: 0 14px 26px -6px rgba(3, 156, 69, 0.7);
  }
}
.sticky-cta__btn {
  animation: sticky-cta-pulse 2.4s ease-in-out infinite;
}
@media (prefers-reduced-motion: reduce) {
  .sticky-cta__btn {
    animation: none;
  }
  .sticky-cta {
    transition: none;
  }
}