/* =================================================================
   academy.css — Chem Atlas Academy 紹介ページ専用スタイル
   ベースは style.css の設計トークンを継承
   ================================================================= */

/* ================================================================
   ヒーロー
   ================================================================ */
.academy-hero {
  position: relative;
  overflow: hidden;
  padding: 7rem 1.5rem 6rem;
  background: linear-gradient(148deg, #0d2137 0%, #0e3460 55%, #0a2647 100%);
  color: #fff;
  text-align: center;
}

.academy-hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.academy-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: 60%;
  height: 120%;
  background: radial-gradient(ellipse at center, rgba(245, 158, 11, 0.14) 0%, transparent 65%);
  pointer-events: none;
}

.academy-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
}

.academy-hero-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--r-pill);
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fcd34d;
  letter-spacing: 0.06em;
  margin-bottom: 1.2rem;
}

.academy-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  margin: 0 0 0.7rem;
  line-height: 1.3;
  letter-spacing: 0.03em;
  color: #fff;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.academy-hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: #fcd34d;
  font-family: var(--font-display);
  margin: 0 0 1.4rem;
}

.academy-hero-lead {
  font-size: clamp(0.93rem, 1.5vw, 1.05rem);
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
  margin: 0 0 2.2rem;
}

.academy-hero .btn-primary {
  box-shadow: 0 8px 20px rgba(255, 107, 53, 0.4);
}

/* ================================================================
   共通セクション見出し
   ================================================================ */
.academy-section {
  padding: 5rem 1.5rem;
}

.academy-section-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.academy-section--alt {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

/* ================================================================
   コンセプト
   ================================================================ */
.academy-concept p {
  max-width: 720px;
  margin: 0 auto 1rem;
  text-align: center;
  color: var(--c-muted);
  font-size: 1rem;
}

.academy-concept p strong {
  color: var(--c-accent);
}

/* ================================================================
   特徴カード
   ================================================================ */
.academy-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.academy-feature-card {
  padding: 2rem 1.5rem;
  border-radius: var(--r-lg);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.academy-feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.academy-feature-icon {
  font-size: 2.2rem;
  margin-bottom: 0.8rem;
  line-height: 1;
}

.academy-feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--c-navy);
}

.academy-feature-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--c-muted);
  line-height: 1.65;
}

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

/* ================================================================
   学習の流れ（ステップ）
   ================================================================ */
.academy-flow-steps {
  display: flex;
  flex-direction: column;
  max-width: 640px;
  margin: 2.5rem auto 0;
}

.academy-flow-step {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
}

.academy-flow-badge {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-amber), #fb923c);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(245, 158, 11, 0.35);
}

.academy-flow-body {
  padding-bottom: 0.5rem;
}

.academy-flow-body strong {
  display: block;
  font-size: 1rem;
  color: var(--c-navy);
  margin-bottom: 0.3rem;
}

.academy-flow-body p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--c-muted);
  line-height: 1.7;
}

.academy-flow-connector {
  width: 2px;
  height: 30px;
  background: linear-gradient(to bottom, var(--c-amber), rgba(245, 158, 11, 0.15));
  margin: 0.3rem 0 0.3rem 19px;
}

/* ================================================================
   コース一覧
   ================================================================ */
.academy-course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.academy-course-card {
  padding: 1.4rem 1.5rem;
  border-radius: var(--r-md);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.academy-course-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-blue);
}

.academy-course-card--special {
  background: linear-gradient(145deg, #fef3c7, #fde68a);
  border-color: #fcd34d;
}

.academy-course-name {
  display: block;
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--c-navy);
  margin-bottom: 0.5rem;
}

.academy-course-price {
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-blue);
}

.academy-course-price span {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--c-muted);
}

.academy-course-note {
  text-align: center;
  color: var(--c-muted);
  font-size: 0.85rem;
  margin: 2rem 0 0;
}

/* ================================================================
   アコーディオン（評価の仕組み / FAQ）
   ================================================================ */
.academy-accordion {
  max-width: 760px;
  margin: 2.5rem auto 0;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.academy-accordion-item {
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background: var(--c-bg);
  overflow: hidden;
}

.academy-accordion-item summary {
  cursor: pointer;
  list-style: none;
  padding: 1.1rem 1.4rem;
  font-weight: 700;
  color: var(--c-navy);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.academy-accordion-item summary::-webkit-details-marker { display: none; }

.academy-accordion-item summary::after {
  content: "+";
  flex-shrink: 0;
  font-size: 1.2rem;
  color: var(--c-amber);
  transition: transform 0.2s ease;
}

.academy-accordion-item[open] summary::after {
  transform: rotate(45deg);
}

.academy-accordion-body {
  padding: 0 1.4rem 1.3rem;
  color: var(--c-muted);
  font-size: 0.88rem;
  line-height: 1.8;
}

.academy-accordion-body ul {
  margin: 0.5rem 0 0;
  padding-left: 1.1rem;
}

.academy-accordion-body li { margin-bottom: 0.4rem; }

.academy-score-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.8rem 0 1rem;
  font-size: 0.85rem;
}

.academy-score-table th,
.academy-score-table td {
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--c-border);
  text-align: left;
  color: var(--c-muted);
}

.academy-score-table th {
  color: var(--c-navy);
  font-weight: 700;
}

/* ================================================================
   「なぜ授業をしないのか」
   ================================================================ */
.academy-why-list {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
}

.academy-why-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  position: relative;
  padding-left: 0;
}

.academy-why-dot {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-amber);
  margin-top: 0.5rem;
}

.academy-why-body {
  padding-bottom: 1.6rem;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 1.6rem;
  flex: 1;
}

.academy-why-list li:last-child .academy-why-body {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.academy-why-body h3 {
  margin: 0 0 0.4rem;
  font-size: 0.98rem;
  color: var(--c-navy);
}

.academy-why-body p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--c-muted);
  line-height: 1.75;
}

/* ================================================================
   運営の仕組み
   ================================================================ */
.academy-ops-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.academy-ops-card {
  padding: 1.6rem 1.4rem;
  border-radius: var(--r-md);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  text-align: center;
}

.academy-ops-icon {
  font-size: 1.7rem;
  margin-bottom: 0.6rem;
}

.academy-ops-card h3 {
  margin: 0 0 0.4rem;
  font-size: 0.92rem;
  color: var(--c-navy);
}

.academy-ops-card p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--c-muted);
  line-height: 1.6;
}

.academy-ops-note {
  text-align: center;
  color: var(--c-muted);
  font-size: 0.84rem;
  margin: 2rem 0 0;
}

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

/* ================================================================
   最終 CTA
   ================================================================ */
.academy-cta {
  padding: 5rem 1.5rem;
  background: linear-gradient(135deg, #fef3c7 0%, #fff8f0 100%);
  border-top: 1px solid #fde68a;
  text-align: center;
}

.academy-cta-inner { max-width: 640px; margin: 0 auto; }

.academy-cta-icon {
  font-size: 2.6rem;
  margin: 0 0 0.8rem;
  line-height: 1;
}

.academy-cta h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-navy);
  margin: 0 0 0.8rem;
}

.academy-cta p {
  color: var(--c-muted);
  font-size: 0.95rem;
  margin: 0 0 2rem;
}

.academy-cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.academy-cta-buttons .btn-disabled {
  position: relative;
  background: #e2e8f0;
  color: var(--c-muted);
  cursor: not-allowed;
}

.academy-cta-buttons .btn-disabled .academy-soon-badge {
  position: absolute;
  top: -10px;
  right: -8px;
  font-size: 0.62rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--r-pill);
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fcd34d;
}

/* ================================================================
   Academy 導線バナー（index.html に配置）
   ================================================================ */
.academy-promo {
  padding: 4.5rem 1.5rem;
  background: linear-gradient(135deg, #0d2137 0%, #0e3460 60%, #0a2647 100%);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.academy-promo::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(245, 158, 11, 0.12) 0%, transparent 65%);
  pointer-events: none;
}

.academy-promo-inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
}

.academy-promo-icon { font-size: 2.4rem; margin-bottom: 0.8rem; }

.academy-promo-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.85rem;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: var(--r-pill);
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #fcd34d;
  letter-spacing: 0.08em;
  margin-bottom: 0.9rem;
}

.academy-promo h2 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  color: #fff;
  margin: 0 0 0.7rem;
  letter-spacing: 0.03em;
}

.academy-promo p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.92rem;
  line-height: 1.8;
  margin: 0 0 1.8rem;
}