/* =========================================================
   Module ページ — Header
   マーキュリー国際高等学校 AI SNS マニュアル
   ※ tokens.css の変数を参照
   ========================================================= */

:root {
  --color-faint: #86868b;
  --color-line: #ebebef;
}

* { box-sizing: border-box; }

/* 保険: SVGアイコンが未サイズ指定でも肥大化しない上限 */
svg { max-width: 100%; }
.back-link svg,
.lesson-time svg,
.goal-check svg,
.copy-button svg,
.success-box__icon svg,
.next-lesson__chevron svg,
.tip-box__icon svg,
.meta-card__icon svg { width: 1em; height: 1em; }

body {
  margin: 0;
  font-family: var(--font-base, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Noto Sans JP', sans-serif);
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.module {
  max-width: var(--container-width, 1080px);
  margin: 0 auto;
  padding: var(--space-xxl) var(--space-md);
}

/* ---------- Module Header ---------- */
.mod-header {
  display: flex;
  flex-direction: column;
}

/* Label行 */
.mod-header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}
.mod-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.mod-status {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 5px 12px;
  white-space: nowrap;
}

/* Title */
.mod-title {
  margin: var(--space-md) 0 0;
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.01em;
}

/* Lead */
.mod-lead {
  margin: var(--space-md) 0 0;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 640px;
}

/* Meta Cards */
.mod-meta {
  margin-top: var(--space-xl);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}
.meta-card {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 76px;
  padding: 0 22px;
  background: var(--bg-primary);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  /* 情報カード — ホバーなし */
}
.meta-card__icon {
  display: inline-flex;
  flex-shrink: 0;
  color: var(--primary);
}
.meta-card__icon svg {
  width: 28px;
  height: 28px;
  stroke-width: 1.75;
}
.meta-card__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.meta-card__value {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.2;
}
.meta-card__label {
  font-size: 12px;
  color: var(--color-faint);
}

/* Tagline */
.mod-tagline {
  margin: var(--space-xs) 0 0;
  font-size: 13px;
  color: var(--color-faint);
  letter-spacing: 0.02em;
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 700px) {
  .mod-meta { grid-template-columns: 1fr; }
}

/* =========================================================
   Lesson 01
   ========================================================= */
.lesson {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-top: var(--space-xxl);
  padding-top: var(--space-xxl);
  border-top: 1px solid var(--color-line);
}

/* ---- Lesson Header ---- */
.lesson-label {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.lesson-title {
  margin: 12px 0 0;
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.lesson-time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 14px 0 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}
.lesson-time svg { width: 17px; height: 17px; }

/* ---- 共通: ブロック見出し ---- */
.block-title {
  margin: 0 0 var(--space-md);
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 600;
}

/* ---- このLessonでできること ---- */
.goal-box {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-lg);
}
.goal-box .block-title { margin-bottom: var(--space-md); }
.goal-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.goal-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 17px;
  font-weight: 500;
}
.goal-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  flex-shrink: 0;
}
.goal-check svg { width: 15px; height: 15px; }

/* ---- なぜこの作業をするの？ ---- */
.why-box { padding: 0 4px; }
.why-lead {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 500;
  line-height: 1.7;
  letter-spacing: -0.005em;
  max-width: 680px;
}
.why-sub {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ---- AI Assist ---- */
.ai-assist {
  background: var(--bg-primary);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
}
.component-label {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.ai-assist__title {
  margin: 0 0 var(--space-md);
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 600;
}
.ai-request {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.ai-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ai-field__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}
.ai-field__slot {
  display: block;
  background: var(--bg-primary);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 15px;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}
.ai-request__sentence {
  margin: 4px 0 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
}
.copy-button {
  margin-top: var(--space-md);
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-pill);
  padding: 15px 24px;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}
.copy-button:hover { background: #0063c6; transform: translateY(-1px); }
.copy-button svg { width: 18px; height: 18px; }
.copy-button.is-copied { background: var(--accent-green, #34c759); }

/* ---- Success ---- */
.success-box {
  text-align: center;
  background: #f5f9ff;
  border: 1px solid #dbe9fb;
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.success-box__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  margin-bottom: var(--space-sm);
}
.success-box__icon svg { width: 28px; height: 28px; }
.success-box__title {
  margin: 0 0 12px;
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 700;
}
.success-box__text {
  margin: 0 0 var(--space-lg);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.next-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-pill);
  padding: 15px var(--space-xl);
  transition: background .2s ease, transform .2s ease;
}
.next-button:hover { background: #0063c6; transform: translateY(-1px); }

/* ---- Next Lesson ---- */
.next-lesson {
  display: flex;
  align-items: center;
  gap: 18px;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 22px 26px;
  transition: background .15s ease, border-color .15s ease;
}
.next-lesson:hover { background: #f7f7f9; border-color: #dfe0e6; }
.next-lesson__body { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.next-lesson__label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.next-lesson__title { font-size: 18px; font-weight: 600; }
.next-lesson__chevron { display: inline-flex; color: #c2c2c8; flex-shrink: 0; }
.next-lesson__chevron svg { width: 20px; height: 20px; }

@media (max-width: 700px) {
  .lesson { gap: var(--space-lg); }
  .copy-button { font-size: 15px; }
}

/* =========================================================
   Mercury Choice（カード選択UI）
   ========================================================= */
.mercury-choice-section .component-label { margin: 0 0 6px; }
.mercury-choice-section .ai-assist__title { margin: 0 0 var(--space-md); }

.mercury-choice {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}
.choice-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  text-align: left;
  background: var(--bg-primary);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: var(--space-md);
  font-family: inherit;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.choice-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}
.choice-card.is-selected {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary) inset, var(--shadow-card);
}
.choice-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--primary);
}
.choice-card__icon svg { width: 22px; height: 22px; }
.choice-card__title { font-size: 17px; font-weight: 600; color: var(--text-primary); }
.choice-card__desc { font-size: 13px; color: var(--text-secondary); }

@media (max-width: 640px) {
  .mercury-choice { grid-template-columns: 1fr; }
}

/* =========================================================
   Mercury Navigation（パンくず）
   ========================================================= */
.mercury-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 24px 0;
  margin: 0 0 32px;
  font-size: 13px;
  color: var(--text-secondary);
}
.mercury-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color .15s ease;
}
.mercury-nav a:hover { color: var(--primary); }
.mercury-nav__current { color: var(--text-primary); font-weight: 500; }
.mercury-nav__sep { color: var(--border); font-size: 12px; }

/* =========================================================
   Module Navigation（前後Module移動・Moduleページ下部専用）
   ========================================================= */
.module-nav {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: 64px;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-line);
}
.module-nav__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 46%;
  text-decoration: none;
  color: inherit;
}
.module-nav__link--next { align-items: flex-end; text-align: right; margin-left: auto; }
.module-nav__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.module-nav__eyebrow svg { width: 14px; height: 14px; }
.module-nav__title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  transition: color .15s ease;
}
.module-nav__link:hover .module-nav__title { color: var(--primary); }

@media (max-width: 600px) {
  .module-nav { flex-direction: column; }
  .module-nav__link,
  .module-nav__link--next { max-width: 100%; align-items: flex-start; text-align: left; margin-left: 0; }
}

/* =========================================================
   Message Box（Mercury Message）
   ========================================================= */
.message-box {
  text-align: center;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
}
.message-box .component-label { margin: 0 0 6px; }
.message-box .block-title { margin: 0 0 var(--space-sm); }
.message-box p:not(.component-label) {
  margin: 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* =========================================================
   Principle Grid（Mercury OSで大切にすること）
   ========================================================= */
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}
.principle-card {
  background: var(--bg-primary);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.principle-card h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}
.principle-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
}

@media (max-width: 700px) {
  .principle-grid { grid-template-columns: 1fr; }
}

/* =========================================================
   Material Checklist
   ========================================================= */
.material-checklist {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.material-checklist .block-title { margin: 0 0 var(--space-md); }
.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.checklist-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
}
.checklist-item__box {
  width: 24px;
  height: 24px;
  border-radius: 7px;
  border: 2px solid var(--border);
  background: var(--bg-primary);
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .15s ease, border-color .15s ease;
}
.checklist-item__box svg {
  width: 14px;
  height: 14px;
  color: #fff;
  opacity: 0;
  transition: opacity .15s ease;
}
.checklist-item.is-checked .checklist-item__box {
  background: var(--primary);
  border-color: var(--primary);
}
.checklist-item.is-checked .checklist-item__box svg { opacity: 1; }
.checklist-item.is-checked .checklist-item__label {
  color: var(--text-secondary);
  text-decoration: line-through;
}

/* =========================================================
   Lesson02 追加要素
   ========================================================= */

/* 文脈ナビ（戻る） */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color .15s ease;
}
.back-link:hover { color: var(--primary); }
.back-link svg { width: 16px; height: 16px; }

/* スタンドアロンLesson（モジュールヘッダーなし）の上余白調整 */
.lesson--standalone {
  margin-top: var(--space-lg);
  padding-top: 0;
  border-top: none;
}

/* AI Assist: 記入済みスロット */
.ai-field__slot--filled {
  border-style: solid;
  color: var(--text-primary);
  letter-spacing: 0;
  font-weight: 500;
}

/* AI Assist: 補足リスト */
.ai-request__note {
  margin: 4px 0 0;
  font-size: 15px;
  color: var(--text-secondary);
}
.ai-request__list {
  margin: 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 15px;
  font-weight: 500;
}
.ai-request__list li { line-height: 1.5; }

/* AI Assist Tip */
.tip-box {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: #fffbeb;
  border: 1px solid #f5e6b8;
  border-radius: var(--radius-md);
  padding: var(--space-md);
}
.tip-box__icon {
  display: inline-flex;
  flex-shrink: 0;
  color: #b8860b;
  margin-top: 2px;
}
.tip-box__icon svg { width: 22px; height: 22px; }
.tip-box__body { display: flex; flex-direction: column; gap: 6px; }
.tip-box__label {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: #8a6d0b;
  letter-spacing: 0.02em;
}
.tip-box__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
}

/* =========================================================
   Mercury Workspace
   ========================================================= */
.workspace-card {
  margin-top: 24px;
  padding: 28px;
  border-radius: 24px;
  background: #f5f5f7;
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.workspace-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.workspace-card__step {
  font-size: 12px;
  font-weight: 600;
  color: #6e6e73;
  letter-spacing: 0.04em;
}

.workspace-card__title {
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 700;
  color: #1d1d1f;
}

.workspace-card__textarea {
  width: 100%;
  min-height: 140px;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: #fff;
  font-family: inherit;
  font-size: 15px;
  line-height: 1.8;
  color: #1d1d1f;
  resize: vertical;
  box-sizing: border-box;
}

.workspace-card__textarea:focus {
  outline: none;
  border-color: #0071e3;
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}

.workspace-card__tip {
  margin: 14px 0 20px;
  font-size: 13px;
  line-height: 1.8;
  color: #6e6e73;
}

.workspace-copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: none;
  background: #1d1d1f;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.workspace-copy-button:hover {
  opacity: 0.86;
  transform: translateY(-1px);
}

/* =========================================================
   RESULT Box（Module Header内）
   ========================================================= */
.result-box {
  margin: var(--space-lg) 0 0;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  max-width: 640px;
}
.result-box .component-label { margin: 0 0 8px; }
.result-box__text {
  margin: 0;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.7;
}

/* =========================================================
   Question Flow（Module03 診断）
   ========================================================= */
.question-flow {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}
.question-card {
  background: var(--bg-primary);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: var(--space-lg);
}
.question-card__num {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.question-card__title {
  margin: 0 0 var(--space-md);
  font-size: clamp(18px, 2.2vw, 21px);
  font-weight: 600;
}
.question-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.question-option {
  background: var(--bg-secondary);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  padding: 12px 22px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.question-option:hover { border-color: var(--primary); }
.question-option.is-selected {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* 診断ボタン */
.diagnose-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  background: var(--primary);
  color: #fff;
  font-family: inherit;
  font-size: 17px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-pill);
  padding: 17px 24px;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease, opacity .2s ease;
}
.diagnose-button:hover { background: #0063c6; transform: translateY(-1px); }
.diagnose-button:disabled {
  opacity: .4;
  cursor: not-allowed;
  transform: none;
}

/* =========================================================
   Recommend Card（診断結果）
   ========================================================= */
.recommend-card {
  background: #f5f9ff;
  border: 1px solid #dbe9fb;
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.recommend-card__eyebrow {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.recommend-card__title {
  margin: 0;
  font-size: clamp(26px, 3.2vw, 34px);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.recommend-card__reason {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}
.recommend-card__block {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}
.recommend-card__block h4 {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}
.recommend-card__block p {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
}
.recommend-card__list {
  margin: 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
}
.recommend-card__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-pill);
  padding: 16px var(--space-xl);
  margin-top: 6px;
  transition: background .2s ease, transform .2s ease;
}
.recommend-card__button:hover { background: #0063c6; transform: translateY(-1px); }

/* =========================================================
   Completed Box（汎用）
   ========================================================= */
.completed-box {
  text-align: center;
  background: #f5f9ff;
  border: 1px solid #dbe9fb;
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
}