/* ================================
   Premium Quality Enhancement
   圧倒的クオリティのための追加スタイル
   ================================ */

:root {
    --font-serif: "Shippori Mincho", "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", serif;
    --gold-gradient: linear-gradient(135deg, #bf953f, #fcf6ba, #b38728, #fbf5b7, #aa771c);
    --glass-premium: rgba(255, 255, 255, 0.85);
    --text-shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --section-padding: 4rem 0;
    --section-padding-mobile: 3rem 0;
}

/* Google Fonts for Mincho */
@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@400;500;600;700&display=swap');

/* ヒーローセクションの刷新 */
.hero {
    position: relative;
    overflow: hidden;
    min-height: 80vh; /* 簡素化のため高さを調整 */
    display: flex;
    align-items: center;
}

.hero-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    padding-top: 80px; /* ヘッダー分 */
}

/* 縦書きキャッチコピー */
.hero-copy-vertical {
    position: absolute;
    top: 15%;
    right: 8%;
    writing-mode: vertical-rl;
    font-family: var(--font-serif);
    color: #fff;
    text-shadow: 0 4px 12px rgba(0,0,0,0.4);
    z-index: 10;
    pointer-events: none;
}

.hero-copy-main {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    letter-spacing: 0.15em;
    margin-left: 1.5rem;
    line-height: 1.3;
    background: linear-gradient(to bottom, #fff 0%, #ffebee 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.hero-copy-sub {
    font-size: clamp(1rem, 1.5vw, 1.5rem);
    font-weight: 500;
    letter-spacing: 0.2em;
    color: rgba(255,255,255,0.9);
    margin-left: 1rem;
    border-right: 1px solid rgba(255,255,255,0.5);
    padding-right: 1rem;
}

/* 既存のコンテンツ調整 */
.hero-content {
    background: rgba(5, 5, 15, 0.5) !important; /* 動画をぼかすための半透明背景 */
    padding: 3rem;
    border-radius: 4px; /* 大学らしい角張ったデザインに */
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
    max-width: 650px;
    position: relative;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border: 2px solid rgba(233, 30, 99, 0.3);
    color: #fff; /* テキストの色を白に */
}

.hero-description {
    color: #fff !important; /* 暗い背景に対して白いテキスト */
    opacity: 1 !important;
    line-height: 1.8;
    font-weight: 500; /* 少し太めにして見やすく */
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5); /* 暗い背景に対して読みやすく */
}

.hero-badge {
    background: var(--primary-color);
    color: white;
    font-family: var(--font-serif);
    padding: 0.5rem 1.5rem;
    border-radius: 2px;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-family: var(--font-serif);
    color: #fff !important;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.hero-main {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, rgba(255, 200, 220, 0.9) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: #fff !important;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ================================
   セクション間の余白と背景色の統一
   ================================ */

/* セクション間の余白を統一 */
.home-trust {
    padding: var(--section-padding) !important;
}

.home-videos {
    padding: var(--section-padding) !important;
}

.home-actions {
    padding: var(--section-padding) !important;
}

.home-faculty {
    padding: var(--section-padding) !important;
}

.home-faq {
    padding: var(--section-padding) !important;
}

.cta {
    padding: var(--section-padding) !important;
}

/* セクションの背景色を交互に配置 */
.home-trust {
    background: var(--bg-light) !important;
}

.home-videos {
    background: #fff !important;
}

.home-actions {
    background: var(--bg-light) !important;
}

.home-faculty {
    background: #fff !important;
}

.home-faq {
    background: var(--bg-light) !important;
}

.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%) !important;
    color: #fff;
}

.cta h2,
.cta p {
    color: #fff;
}

/* ================================
   カード型レイアウトの統一
   ================================ */

/* 統一されたカードスタイル（summary-cardは下で個別に定義） */
.trust-card,
.home-video-card,
.home-action-card,
.home-faculty-card,
.home-faq-item {
    border-radius: 12px !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08) !important;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    border: 1px solid rgba(233, 30, 99, 0.1) !important;
}

.trust-card:hover,
.home-video-card:hover,
.home-action-card:hover,
.home-faculty-card:hover {
    transform: translateY(-4px) !important;
    box-shadow: 0 8px 24px rgba(233, 30, 99, 0.15) !important;
}

/* カード内の余白を統一（summary-cardは上で定義済み） */
.trust-card {
    padding: 2rem !important;
}

.home-action-card {
    padding: 2rem !important;
}

.home-faculty-card {
    padding: 1.75rem !important;
}

.home-faq-item {
    padding: 1.5rem !important;
}

/* ================================
   タイポグラフィの階層化
   ================================ */

/* セクション見出しの統一 */
.home-trust-header h2,
.home-videos-header h2,
.home-actions-header h2,
.home-faculty-header h2,
.home-faq-header h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: 0.02em;
}

/* section-kickerの統一 */
.section-kicker {
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--primary-color);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    display: inline-block;
    position: relative;
}

.section-kicker::after {
    content: '';
    position: absolute;
    right: -35px;
    top: 50%;
    width: 25px;
    height: 1px;
    background: var(--primary-color);
}

/* ================================
   サマリーセクションの強化
   ================================ */

.home-summary {
    background: #fff !important;
    padding: var(--section-padding) !important;
    position: relative;
}

.home-summary-grid {
    gap: 1.5rem !important;
}

.home-summary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.1), transparent);
}

.summary-card {
    border: 1px solid rgba(0,0,0,0.05) !important;
    background: #fff !important;
    padding: 1.5rem !important;
    border-radius: 12px !important;
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.4s ease !important;
    position: relative;
    overflow: hidden;
}

.summary-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.summary-card:hover {
    transform: translateY(-4px) !important;
    box-shadow: 0 8px 24px rgba(233, 30, 99, 0.15) !important;
}

.summary-card:hover::after {
    opacity: 1;
}

.summary-value {
    font-family: 'Inter', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem) !important;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    margin: 1rem 0;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.summary-label {
    font-family: var(--font-serif);
    font-weight: 600;
    color: var(--text-light);
    font-size: 1.1rem;
}

.summary-icon {
    margin-bottom: 1rem;
}

/* アカデミックな装飾 */
.academic-crest {
    position: absolute;
    bottom: -50px;
    right: -50px;
    width: 300px;
    height: 300px;
    opacity: 0.03;
    pointer-events: none;
    background-image: url('/images/skb-kosyo.png');
    background-size: contain;
    background-repeat: no-repeat;
    transform: rotate(-15deg);
}

/* ボタンの高級感アップ */
.btn {
    border-radius: 2px; /* 少し角張らせる */
    font-family: var(--font-serif);
    letter-spacing: 0.05em;
    text-transform: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.btn-primary {
    background: linear-gradient(135deg, #be164f 0%, #E91E63 100%);
    box-shadow: 0 4px 15px rgba(233, 30, 99, 0.3);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(233, 30, 99, 0.4);
}

/* 波形セパレーターの調整 */
.section-wave svg path {
    fill: #fff;
}

/* カルーセルのリファイン */
.hero-slide-thumb img {
    transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.hero-slide:hover .hero-slide-thumb img {
    transform: scale(1.05);
}

.hero-slide {
    border: none;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* フッターの重厚感 */
.footer {
    background: #1a1a1a;
    color: #fff;
    border-top: 4px solid var(--primary-color);
}

.footer h4 {
    font-family: var(--font-serif);
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.footer a {
    color: #ccc;
    transition: color 0.3s;
}

.footer a:hover {
    color: var(--primary-color);
}

/* ================================
   シェアボタンのコンパクト化（アイコンのみ）
   ================================ */

/* すべてのシェアボタンのテキストを非表示 */
.share-btn span {
    display: none !important;
}

/* アイコンのみのコンパクトなボタン */
.share-btn {
    padding: 0.5rem !important;
    width: 40px !important;
    height: 40px !important;
    justify-content: center !important;
    border-radius: 8px !important;
    gap: 0 !important;
}

.share-btn i {
    font-size: 1.1rem !important;
    margin: 0 !important;
}

/* 固定シェアバー用のスタイルは既存のものを維持 */
.fixed-share-bar .share-btn {
    width: 48px !important;
    height: 48px !important;
    border-radius: 50% !important;
}

/* ================================
   モバイル対応の改善
   ================================ */

@media (max-width: 768px) {
    .hero {
        min-height: 70vh;
    }
    
    .hero-content {
        padding: 2rem;
    }
    
    .hero-main {
        font-size: 2.5rem;
    }
    
    .hero-copy-vertical {
        display: none; /* モバイルでは縦書きを非表示 */
    }
    
    /* セクションのpaddingをモバイル用に調整 */
    .home-summary,
    .home-trust,
    .home-videos,
    .home-actions,
    .home-faculty,
    .home-faq,
    .cta {
        padding: var(--section-padding-mobile) !important;
    }
    
    /* カードのpaddingを調整 */
    .summary-card,
    .trust-card,
    .home-action-card,
    .home-faculty-card,
    .home-faq-item {
        padding: 1.25rem !important;
    }
    
    /* フォントサイズの調整 */
    .home-trust-header h2,
    .home-videos-header h2,
    .home-actions-header h2,
    .home-faculty-header h2,
    .home-faq-header h2 {
        font-size: 1.5rem;
    }
    
    .summary-value {
        font-size: 2.5rem;
    }
}