/* ========================================
   垢抜け製作所 ヘアメイク講座 — 共通スタイル
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Noto+Serif+JP:wght@300;400;700&display=swap');

:root {
  --rose-gold: #C9956C;
  --rose-light: #E8C4A8;
  --rose-pale: #F5E6DA;
  --beige: #F0E6D9;
  --beige-dark: #D4B896;
  --warm-white: #FFF8F3;
  --text-dark: #3D2B1F;
  --text-mid: #6B4D38;
  --text-light: #9B7B66;
  --accent: #B87361;
  --gold: #C4A35A;
  --success: #7A9E7E;
  --warning: #E8A838;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--beige);
  color: var(--text-dark);
  line-height: 1.8;
  font-size: 15px;
}

/* ===== LAYOUT ===== */
.page-wrapper {
  max-width: 800px;
  margin: 0 auto;
  background: var(--warm-white);
  min-height: 100vh;
}

/* ===== HEADER ===== */
.lesson-header {
  background: linear-gradient(135deg, #2A1A14 0%, #4A2C20 60%, #6B3D2A 100%);
  padding: 48px 40px 36px;
  position: relative;
  overflow: hidden;
}
.lesson-header::after {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(201,149,108,0.25) 0%, transparent 70%);
  border-radius: 50%;
}
.chapter-label {
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--rose-light);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.lesson-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 26px;
  font-weight: 400;
  color: white;
  line-height: 1.5;
  position: relative; z-index: 1;
  margin-bottom: 12px;
}
.lesson-subtitle {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  letter-spacing: 1px;
}

/* ===== CONTENT ===== */
.lesson-body {
  padding: 40px;
}

/* ===== LEARNING GOALS ===== */
.goals-box {
  background: linear-gradient(135deg, var(--rose-pale), var(--beige));
  border-left: 4px solid var(--rose-gold);
  border-radius: 0 12px 12px 0;
  padding: 20px 24px;
  margin-bottom: 36px;
}
.goals-box .goals-title {
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--rose-gold);
  margin-bottom: 10px;
  text-transform: uppercase;
}
.goals-box ul {
  list-style: none;
  padding: 0;
}
.goals-box ul li {
  padding: 4px 0 4px 20px;
  position: relative;
  color: var(--text-mid);
  font-size: 14px;
}
.goals-box ul li::before {
  content: '✦';
  position: absolute; left: 0;
  color: var(--rose-gold);
  font-size: 10px;
  top: 7px;
}

/* ===== BODY TEXT ===== */
.lesson-body h2 {
  font-family: 'Noto Serif JP', serif;
  font-size: 20px;
  font-weight: 400;
  color: var(--text-dark);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--beige-dark);
}
.lesson-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  margin: 28px 0 12px;
}
.lesson-body p {
  margin-bottom: 18px;
  color: var(--text-mid);
}
.lesson-body strong {
  color: var(--text-dark);
  font-weight: 700;
}

/* ===== ACCENT QUOTE ===== */
.accent-quote {
  background: var(--warm-white);
  border: 1px solid var(--rose-light);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 28px 0;
  font-family: 'Noto Serif JP', serif;
  font-size: 16px;
  color: var(--text-dark);
  line-height: 1.8;
  text-align: center;
}
.accent-quote em {
  color: var(--accent);
  font-style: normal;
  font-weight: 700;
}

/* ===== POINT BOX ===== */
.point-box {
  background: var(--warm-white);
  border: 2px solid var(--rose-gold);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 28px 0;
}
.point-box .point-label {
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--rose-gold);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.point-box ul {
  list-style: none;
}
.point-box ul li {
  padding: 6px 0 6px 24px;
  position: relative;
  font-size: 14px;
  color: var(--text-dark);
  border-bottom: 1px solid var(--rose-pale);
}
.point-box ul li:last-child { border-bottom: none; }
.point-box ul li::before {
  content: '◆';
  position: absolute; left: 0;
  color: var(--rose-gold);
  font-size: 9px;
  top: 9px;
}

/* ===== WARNING BOX ===== */
.warning-box {
  background: #FFF9F0;
  border-left: 4px solid var(--warning);
  border-radius: 0 12px 12px 0;
  padding: 16px 20px;
  margin: 24px 0;
}
.warning-box .warning-label {
  font-size: 11px;
  color: var(--warning);
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: 1px;
}

/* ===== INFOGRAPHIC / DIAGRAM ===== */
.diagram-wrap {
  background: var(--warm-white);
  border: 1px solid var(--beige-dark);
  border-radius: 16px;
  padding: 28px;
  margin: 32px 0;
  text-align: center;
}
.diagram-wrap .diagram-title {
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--text-light);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.diagram-wrap svg {
  max-width: 100%;
}

/* ===== SCREENSHOT GALLERY ===== */
.screenshot-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 28px 0;
}
.screenshot-gallery.single { grid-template-columns: 1fr; max-width: 320px; margin-left: auto; margin-right: auto; }
.screenshot-item {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--rose-pale);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.screenshot-item img {
  width: 100%;
  display: block;
}
.screenshot-item .screenshot-caption {
  background: var(--warm-white);
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-light);
  text-align: center;
}

/* ===== BEFORE/AFTER ===== */
.ba-container {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 8px;
  align-items: center;
  margin: 32px 0;
}
.ba-label {
  font-size: 10px;
  letter-spacing: 3px;
  text-align: center;
  padding: 4px 0;
  border-radius: 20px;
}
.ba-label.before { background: #EEE; color: #888; }
.ba-label.after { background: var(--rose-gold); color: white; }
.ba-arrow { font-size: 24px; color: var(--rose-gold); text-align: center; }

/* ===== CHECKLIST ===== */
.checklist {
  background: var(--warm-white);
  border-radius: 16px;
  padding: 24px;
  margin: 32px 0;
  border: 1px solid var(--beige-dark);
}
.checklist .checklist-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 16px;
  color: var(--text-dark);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--beige-dark);
}
.checklist label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--rose-pale);
  cursor: pointer;
  font-size: 14px;
  color: var(--text-mid);
}
.checklist label:last-child { border-bottom: none; }
.checklist input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--rose-gold);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ===== CASE STUDY ===== */
.case-study {
  background: linear-gradient(135deg, var(--rose-pale), #FFF);
  border-radius: 16px;
  padding: 24px;
  margin: 32px 0;
  border: 1px solid var(--rose-light);
}
.case-study .case-label {
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--rose-gold);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.case-study .case-text {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.9;
}
.case-study .case-result {
  margin-top: 14px;
  padding: 12px 16px;
  background: white;
  border-radius: 8px;
  font-weight: 700;
  color: var(--accent);
  font-size: 15px;
}

/* ===== NAVIGATION ===== */
.lesson-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 40px;
  border-top: 1px solid var(--beige-dark);
  background: var(--warm-white);
}
.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 24px;
  font-size: 13px;
  text-decoration: none;
  transition: all 0.2s;
  font-family: 'Noto Sans JP', sans-serif;
}
.nav-btn.prev {
  background: var(--beige);
  color: var(--text-mid);
  border: 1px solid var(--beige-dark);
}
.nav-btn.next {
  background: var(--rose-gold);
  color: white;
  border: none;
}
.nav-btn:hover { opacity: 0.85; transform: translateY(-1px); }

/* ===== COMPLETE BUTTON ===== */
.complete-btn {
  display: block;
  width: calc(100% - 80px);
  margin: 20px 40px;
  padding: 16px;
  background: linear-gradient(135deg, var(--accent), var(--rose-gold));
  color: white;
  border: none;
  border-radius: 40px;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 2px;
  transition: all 0.2s;
}
.complete-btn:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(184,115,97,0.3); }

/* ===== FOOTER ===== */
.lesson-footer {
  text-align: center;
  padding: 20px;
  font-size: 11px;
  color: var(--text-light);
  letter-spacing: 2px;
}

/* ===== LESSON BA EXAMPLE ===== */
.ba-lesson-box {
  background: var(--warm-white);
  border-radius: 16px;
  padding: 20px 20px 16px;
  margin: 32px 0;
  border: 1px solid var(--beige-dark);
}
.ba-lesson-title {
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--rose-gold);
  font-weight: 700;
  text-align: center;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.ba-lesson-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  margin-bottom: 4px;
}
.ba-lesson-caption {
  font-size: 12px;
  color: var(--text-mid);
  line-height: 1.9;
  text-align: center;
  margin-top: 12px;
  font-style: italic;
  padding: 0 4px;
  border-top: 1px solid var(--beige-dark);
  padding-top: 12px;
}