/* ========================================
   Locomotive Scroll 淡入淡出動畫
   ======================================== */

/* 基礎動畫元素 - 淡入向上 */
[data-scroll] {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

[data-scroll].is-inview {
    opacity: 1;
    transform: translateY(0);
}

/* 淡入效果（無位移） */
[data-scroll-fade] {
    opacity: 0;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity;
}

[data-scroll-fade].is-inview {
    opacity: 1;
}

/* 從左邊滑入 */
[data-scroll-left] {
    opacity: 0;
    transform: translateX(-60px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

[data-scroll-left].is-inview {
    opacity: 1;
    transform: translateX(0);
}

/* 從右邊滑入 */
[data-scroll-right] {
    opacity: 0;
    transform: translateX(60px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

[data-scroll-right].is-inview {
    opacity: 1;
    transform: translateX(0);
}

/* 縮放淡入 */
[data-scroll-scale] {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

[data-scroll-scale].is-inview {
    opacity: 1;
    transform: scale(1);
}

/* 延遲動畫類別 */
[data-scroll-delay="0.1"] { transition-delay: 0.1s; }
[data-scroll-delay="0.2"] { transition-delay: 0.2s; }
[data-scroll-delay="0.3"] { transition-delay: 0.3s; }
[data-scroll-delay="0.4"] { transition-delay: 0.4s; }
[data-scroll-delay="0.5"] { transition-delay: 0.5s; }
[data-scroll-delay="0.6"] { transition-delay: 0.6s; }
[data-scroll-delay="0.7"] { transition-delay: 0.7s; }
[data-scroll-delay="0.8"] { transition-delay: 0.8s; }
[data-scroll-delay="0.9"] { transition-delay: 0.9s; }
[data-scroll-delay="1"] { transition-delay: 1s; }

/* 動畫速度控制 */
[data-scroll-speed="fast"] {
    transition-duration: 0.5s;
}

[data-scroll-speed="slow"] {
    transition-duration: 1.2s;
}

/* ========================================
   Keyframe 動畫備用
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}