/* ============================================
   scroll-animations.css - 統一スクロールアニメーション
   ============================================
   
   全ページで使用するスクロールインタラクション効果
   features.html互換性を保ちつつ、新しいクラスを追加
   
   目次 (Table of Contents)
   --------------------------------------------
   01. features.html互換性維持 - 既存クラス
   02. 新しい統一クラス - 奥から浮かぶエフェクト
   03. 段階的表示（Stagger）アニメーション
   04. タイプライターエフェクト
   05. ヒーローセクション専用エフェクト
   06. 強化されたホバーエフェクト
   07. 特色カード強化スタイル
   08. 特殊効果・プレミアムエフェクト
   09. features.html既存要素の強化
   10. レスポンシブ対応
   11-19. アクセシビリティ・パフォーマンス・その他
   
   ============================================ */


/* ====================================================
   04. タイプライターエフェクト（修正版）
==================================================== */

.typewriter {
    /* 初期状態では空にして、JavaScriptで制御 */
    overflow: hidden;
    border-right: 3px solid transparent;
    /* 初期は透明 */
    white-space: wrap;
    display: inline-block;
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    color: inherit;
    line-height: inherit;
    min-width: 1px;
    /* 最小幅を確保 */
    /* GPU加速を有効化 */
    transform: translateZ(0);
    backface-visibility: hidden;
}


/* タイピング中の状態 */

.typewriter.typing {
    border-right: 3px solid #0066cc;
    animation: blink-caret 0.75s step-end infinite;
}


/* タイピング完了状態 */

.typewriter.completed {
    border-right: 3px solid #0066cc;
    animation: blink-caret 0.75s step-end infinite;
    white-space: wrap;
}


/* カーソル点滅アニメーション */

@keyframes blink-caret {
    from,
    to {
        border-right-color: transparent;
    }
    50% {
        border-right-color: #0066cc;
    }
}


/* タイプライター用の追加スタイル */

.typewriter-container {
    min-height: 1.2em;
    /* テキストの高さを確保 */
    display: flex;
    align-items: center;
    justify-content: center;
}


/* features.html専用のタイプライタースタイル */

.inner-hero .typewriter {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: bold;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    border-right-color: transparent;
    /* 初期は透明 */
}

.inner-hero .typewriter.typing,
.inner-hero .typewriter.completed {
    border-right-color: #ffffff;
}


/* features.html専用のカーソル点滅 */

.inner-hero .typewriter.typing {
    animation: blink-caret-white 0.75s step-end infinite;
}

.inner-hero .typewriter.completed {
    animation: blink-caret-white 0.75s step-end infinite;
}

@keyframes blink-caret-white {
    from,
    to {
        border-right-color: transparent;
    }
    50% {
        border-right-color: #ffffff;
    }
}


/* レスポンシブ対応 */

@media (max-width: 768px) {
    .inner-hero .typewriter {
        font-size: clamp(1.2rem, 3.5vw, 1.8rem);
        border-right-width: 2px;
    }
}

@media (max-width: 480px) {
    .inner-hero .typewriter {
        font-size: clamp(1rem, 3vw, 1.4rem);
        border-right-width: 2px;
    }
}


/* ====================================================
   01. features.html互換性維持 - 既存クラス
==================================================== */


/* 下からフェードイン - 画面高さに応じて移動距離を調整 */

.scroll-reveal {
    opacity: 0;
    transform: translateY(min(60px, 8vh));
    transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}


/* 左からスライドイン */

.scroll-reveal-left {
    opacity: 0;
    transform: translateX(min(-80px, -10vw));
    transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}


/* 右からスライドイン */

.scroll-reveal-right {
    opacity: 0;
    transform: translateX(min(80px, 10vw));
    transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}


/* スケールアニメーション */

.scroll-reveal-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-reveal-scale.revealed {
    opacity: 1;
    transform: scale(1);
}


/* 可視性制御アニメーション */

.scroll-fade {
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.scroll-fade.visible,
.scroll-fade.revealed {
    opacity: 1;
}


/* ====================================================
   02. 新しい統一クラス - 奥から浮かぶエフェクト
==================================================== */


/* 奥から浮かぶメインアニメーション - 画面高さ対応 */

.scroll-fade-up {
    opacity: 0;
    transform: translateY(min(40px, 6vh)) translateZ(-20px) scale(0.95);
    transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    perspective: 1000px;
    backface-visibility: hidden;
}

.scroll-fade-up.revealed {
    opacity: 1;
    transform: translateY(0) translateZ(0) scale(1);
}


/* セクション用の大きな浮上エフェクト */

.scroll-section-fade {
    opacity: 0;
    transform: translateY(min(60px, 8vh)) translateZ(-30px) scale(0.9);
    transition: all 1.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    perspective: 1500px;
    backface-visibility: hidden;
}

.scroll-section-fade.revealed {
    opacity: 1;
    transform: translateY(0) translateZ(0) scale(1);
}


/* カード要素用のエフェクト */

.scroll-card-fade {
    opacity: 0;
    transform: translateY(min(30px, 4vh)) translateZ(-15px) scale(0.98);
    transition: all 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    perspective: 800px;
    backface-visibility: hidden;
}

.scroll-card-fade.revealed {
    opacity: 1;
    transform: translateY(0) translateZ(0) scale(1);
}


/* ====================================================
   03. 段階的表示（Stagger）アニメーション
==================================================== */

.stagger-delay-1 {
    transition-delay: 0.1s;
}

.stagger-delay-2 {
    transition-delay: 0.3s;
}

.stagger-delay-3 {
    transition-delay: 0.5s;
}

.stagger-delay-4 {
    transition-delay: 0.7s;
}

.stagger-delay-5 {
    transition-delay: 0.9s;
}

.stagger-delay-6 {
    transition-delay: 1.1s;
}


/* ====================================================
   05. ヒーローセクション専用エフェクト
==================================================== */

.hero-title-fade {
    opacity: 0;
    transform: translateY(min(50px, 7vh)) scale(0.9);
    transition: all 1.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hero-title-fade.revealed {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.hero-subtitle-fade {
    opacity: 0;
    transform: translateY(min(30px, 4vh));
    transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transition-delay: 0.3s;
}

.hero-subtitle-fade.revealed {
    opacity: 1;
    transform: translateY(0);
}

.hero-button-fade {
    opacity: 0;
    transform: translateY(min(20px, 3vh)) scale(0.95);
    transition: all 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transition-delay: 0.6s;
}

.hero-button-fade.revealed {
    opacity: 1;
    transform: translateY(0) scale(1);
}


/* ====================================================
   06. 強化されたホバーエフェクト
==================================================== */

.enhanced-hover {
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.enhanced-hover::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.8s ease;
    z-index: 1;
}

.enhanced-hover:hover::before {
    left: 100%;
}

.enhanced-hover:hover {
    transform: translateY(min(-8px, -1vh)) scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 102, 204, 0.2);
}


/* ====================================================
   07. 特色カード強化スタイル
==================================================== */

.feature-card-enhanced {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border-radius: 25px;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.feature-card-enhanced:hover {
    backdrop-filter: blur(15px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border-color: rgba(0, 102, 204, 0.3);
}


/* ====================================================
   08. 特殊効果・プレミアムエフェクト
==================================================== */


/* 特別なセクション用の強化エフェクト */

.scroll-premium-fade {
    opacity: 0;
    transform: translateY(min(50px, 7vh)) translateZ(-25px) scale(0.92) rotateX(5deg);
    transition: all 1.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    perspective: 2000px;
    transform-style: preserve-3d;
}

.scroll-premium-fade.revealed {
    opacity: 1;
    transform: translateY(0) translateZ(0) scale(1) rotateX(0deg);
}


/* グラデーションフェード */

.scroll-gradient-fade {
    opacity: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.1) 50%, transparent 100%);
    transform: translateY(min(30px, 4vh));
    transition: all 1.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.scroll-gradient-fade.revealed {
    opacity: 1;
    transform: translateY(0);
}


/* ====================================================
   09. レスポンシブ対応
==================================================== */


/* タブレット */

@media (max-width: 1024px) {
    .scroll-fade-up,
    .scroll-card-fade {
        transform: translateY(min(30px, 5vh)) scale(0.97);
    }
    .scroll-section-fade {
        transform: translateY(min(40px, 6vh)) scale(0.95);
    }
    .enhanced-hover:hover {
        transform: translateY(min(-4px, -0.5vh)) scale(1.01);
    }
}


/* スマートフォン */

@media (max-width: 768px) {
    .scroll-fade-up,
    .scroll-card-fade {
        transform: translateY(min(20px, 4vh)) scale(0.98);
        transition-duration: 1s;
    }
    .scroll-section-fade {
        transform: translateY(min(30px, 5vh)) scale(0.97);
        transition-duration: 1.2s;
    }
    /* モバイルでは左右アニメーションを下からに変更 */
    .scroll-reveal-left,
    .scroll-reveal-right {
        transform: translateY(min(40px, 6vh));
        opacity: 0;
    }
    .scroll-reveal-left.revealed,
    .scroll-reveal-right.revealed {
        transform: translateY(0);
        opacity: 1;
    }
}


/* 小型スマートフォン */

@media (max-width: 480px) {
    .scroll-fade-up,
    .scroll-section-fade,
    .scroll-card-fade {
        transform: translateY(min(15px, 3vh)) scale(0.99);
        transition-duration: 0.8s;
    }
    .enhanced-hover:hover {
        transform: none;
        box-shadow: 0 4px 15px rgba(0, 102, 204, 0.1);
    }
}


/* ====================================================
   11. アクセシビリティ配慮
==================================================== */


/* モーション感受性への配慮 */

@media (prefers-reduced-motion: reduce) {
    .scroll-fade-up,
    .scroll-section-fade,
    .scroll-card-fade,
    .hero-title-fade,
    .hero-subtitle-fade,
    .hero-button-fade,
    .scroll-reveal,
    .scroll-reveal-left,
    .scroll-reveal-right,
    .scroll-reveal-scale,
    .scroll-premium-fade,
    .scroll-gradient-fade,
    .enhanced-hover {
        animation: none;
        transition: opacity 0.3s ease;
        transform: none;
    }
    .scroll-fade-up.revealed,
    .scroll-section-fade.revealed,
    .scroll-card-fade.revealed,
    .hero-title-fade.revealed,
    .hero-subtitle-fade.revealed,
    .hero-button-fade.revealed,
    .scroll-reveal.revealed,
    .scroll-reveal-left.revealed,
    .scroll-reveal-right.revealed,
    .scroll-reveal-scale.revealed,
    .scroll-premium-fade.revealed,
    .scroll-gradient-fade.revealed {
        opacity: 1;
        transform: none;
    }
    .typewriter {
        animation: none;
        border-right: none;
        white-space: normal;
        overflow: visible;
        width: auto;
    }
}


/* ハイコントラストモード対応 */

@media (prefers-contrast: high) {
    .typewriter {
        border-right-color: #000;
    }
    .inner-hero .typewriter {
        border-right-color: #fff;
    }
    .feature-card-enhanced {
        border-color: #000;
    }
}


/* ====================================================
   12. パフォーマンス最適化
==================================================== */


/* GPU加速の有効化 */

.scroll-fade-up,
.scroll-section-fade,
.scroll-card-fade,
.hero-title-fade,
.hero-subtitle-fade,
.hero-button-fade,
.scroll-reveal,
.scroll-reveal-left,
.scroll-reveal-right,
.scroll-reveal-scale,
.scroll-premium-fade,
.scroll-gradient-fade,
.enhanced-hover {
    will-change: transform, opacity;
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}


/* アニメーション完了後の最適化 */

.scroll-fade-up.revealed,
.scroll-section-fade.revealed,
.scroll-card-fade.revealed,
.hero-title-fade.revealed,
.hero-subtitle-fade.revealed,
.hero-button-fade.revealed,
.scroll-reveal.revealed,
.scroll-reveal-left.revealed,
.scroll-reveal-right.revealed,
.scroll-reveal-scale.revealed,
.scroll-premium-fade.revealed,
.scroll-gradient-fade.revealed {
    will-change: auto;
}


/* ====================================================
   13. エラー状態・フォールバック
==================================================== */


/* JavaScript無効時のフォールバック */

.no-js .scroll-fade-up,
.no-js .scroll-section-fade,
.no-js .scroll-card-fade,
.no-js .hero-title-fade,
.no-js .hero-subtitle-fade,
.no-js .hero-button-fade,
.no-js .scroll-reveal,
.no-js .scroll-reveal-left,
.no-js .scroll-reveal-right,
.no-js .scroll-reveal-scale,
.no-js .scroll-premium-fade,
.no-js .scroll-gradient-fade {
    opacity: 1;
    transform: none;
}

.no-js .typewriter {
    border-right: none;
    white-space: normal;
    overflow: visible;
    width: auto;
}


/* 低スペックデバイス用の軽量版 */

@media (max-width: 480px) and (max-resolution: 150dpi) {
    .enhanced-hover,
    .scroll-premium-fade {
        animation: none;
        transition: none;
    }
}


/* ====================================================
   14. 印刷対応
==================================================== */

@media print {
    .scroll-fade-up,
    .scroll-section-fade,
    .scroll-card-fade,
    .hero-title-fade,
    .hero-subtitle-fade,
    .hero-button-fade,
    .scroll-reveal,
    .scroll-reveal-left,
    .scroll-reveal-right,
    .scroll-reveal-scale,
    .scroll-premium-fade,
    .scroll-gradient-fade {
        opacity: 1 !important;
        transform: none !important;
    }
    .typewriter {
        border-right: none !important;
        animation: none !important;
        white-space: normal !important;
        width: auto !important;
    }
    .enhanced-hover::before {
        display: none;
    }
}


/* ====================================================
   15. カスタムプロパティ（CSS変数）
   注: カラー変数はbase.cssから継承。以下はアニメーション固有の設定
==================================================== */

:root {
    /* アニメーション固有変数 */
    --scroll-animation-duration: 1.2s;
    --scroll-animation-easing: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --scroll-translate-distance: min(40px, 6vh);
    --scroll-scale-start: 0.95;
    --typewriter-speed: 2s;
    
    /* base.cssから継承するカラー変数（フォールバック付き） */
    --typewriter-caret-color: var(--color-primary, #0056b3);
    --scroll-primary-color: var(--color-primary, #0056b3);
    --scroll-secondary-color: var(--color-primary-light, #069efc);
    --scroll-accent-color: #667eea;
    
    /* アニメーション用オーバーレイ・シャドウ */
    --scroll-background-overlay: rgba(255, 255, 255, 0.95);
    --scroll-shadow-light: var(--shadow-md, 0 8px 25px rgba(0, 0, 0, 0.1));
    --scroll-shadow-heavy: var(--shadow-xl, 0 20px 60px rgba(0, 0, 0, 0.15));
    --scroll-border-radius: 25px;
    --scroll-spacing-unit: 1rem;
}


/* カスタムプロパティの活用 */

.scroll-fade-up,
.scroll-section-fade,
.scroll-card-fade,
.scroll-reveal,
.scroll-reveal-left,
.scroll-reveal-right,
.scroll-reveal-scale {
    transition: all var(--scroll-animation-duration) var(--scroll-animation-easing);
}

.typewriter {
    border-right-color: var(--typewriter-caret-color);
}

.enhanced-hover:hover {
    box-shadow: var(--scroll-shadow-heavy);
}

.feature-card-enhanced {
    background: var(--scroll-background-overlay);
    border-radius: var(--scroll-border-radius);
    box-shadow: var(--scroll-shadow-light);
}


/* ====================================================
   16. ダークモード対応（オプション）
==================================================== */

@media (prefers-color-scheme: dark) {
    .feature-card-enhanced {
        background: rgba(45, 55, 72, 0.95);
        border-color: rgba(255, 255, 255, 0.1);
    }
    .typewriter {
        border-right-color: #63b3ed;
    }
    :root {
        --typewriter-caret-color: #63b3ed;
        --scroll-primary-color: #63b3ed;
    }
}


/* ====================================================
   17. 低高さデバイス対応（横向きスマホなど）
==================================================== */

@media (max-height: 600px) {
    /* アニメーション距離を小さく */
    .scroll-fade-up {
        transform: translateY(min(20px, 3vh)) translateZ(-10px) scale(0.97);
    }
    .scroll-section-fade {
        transform: translateY(min(30px, 4vh)) translateZ(-15px) scale(0.95);
    }
    .scroll-card-fade {
        transform: translateY(min(15px, 2vh)) translateZ(-8px) scale(0.99);
    }
    .hero-title-fade {
        transform: translateY(min(25px, 3vh)) scale(0.95);
    }
    .hero-subtitle-fade {
        transform: translateY(min(15px, 2vh));
    }
    .hero-button-fade {
        transform: translateY(min(10px, 1.5vh)) scale(0.97);
    }
    /* アニメーション時間も短縮 */
    .scroll-fade-up,
    .scroll-section-fade,
    .scroll-card-fade {
        transition-duration: 0.8s;
    }
    /* 段階的表示の遅延も短縮 */
    .stagger-delay-1 {
        transition-delay: 0.05s;
    }
    .stagger-delay-2 {
        transition-delay: 0.15s;
    }
    .stagger-delay-3 {
        transition-delay: 0.25s;
    }
    .stagger-delay-4 {
        transition-delay: 0.35s;
    }
    .stagger-delay-5 {
        transition-delay: 0.45s;
    }
    .stagger-delay-6 {
        transition-delay: 0.55s;
    }
}

@media (max-height: 400px) {
    /* さらに小さく */
    .scroll-fade-up,
    .scroll-section-fade,
    .scroll-card-fade,
    .hero-title-fade,
    .hero-subtitle-fade,
    .hero-button-fade {
        transform: translateY(10px) scale(0.98);
        transition-duration: 0.5s;
    }
    /* 段階的表示を無効化 */
    .stagger-delay-1,
    .stagger-delay-2,
    .stagger-delay-3,
    .stagger-delay-4,
    .stagger-delay-5,
    .stagger-delay-6 {
        transition-delay: 0s;
    }
}


/* ====================================================
   18. 最終調整・微調整
==================================================== */


/* Z-indexの管理 */

.scroll-fade-up {
    z-index: 1;
}

.scroll-section-fade {
    z-index: 2;
}

.scroll-card-fade {
    z-index: 3;
}

.scroll-premium-fade {
    z-index: 4;
}

.enhanced-hover::before {
    z-index: 1;
}


/* フォーカス管理 */

.enhanced-hover:focus {
    outline: 2px solid var(--scroll-primary-color);
    outline-offset: 2px;
}


/* 選択禁止（必要に応じて） */

.no-select {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}


/* スムーズスクロール */

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}


/* ====================================================
   19. タブレット縦置き対応
==================================================== */

@media (min-width: 768px) and (max-width: 1024px) and (orientation: portrait) {
    /* iPadなどの縦置きタブレット用 */
    .scroll-fade-up {
        transform: translateY(min(35px, 5vh)) translateZ(-15px) scale(0.96);
    }
    .scroll-section-fade {
        transform: translateY(min(45px, 6vh)) translateZ(-20px) scale(0.93);
    }
    .enhanced-hover:hover {
        transform: translateY(min(-6px, -0.8vh)) scale(1.015);
    }
}