/* =========================================================
   09-effects · 深色模式与动效
   承载范围：原 style.css 第 2967-3150 行
   本节包含：
     - 深色模式
     - 点击粒子动画
     - 滚动渐显动画
     - 回到顶部按钮
   ========================================================= */

/* ============= 深色模式 ============= */







body.dark-mode .card {
    background: var(--bg-card);
    border-color: var(--border-light);
    color: var(--text-primary);
}




body.dark-mode .hero-title {
    color: var(--pink-200);
}

body.dark-mode .stat-num {
    color: var(--text-heading);
}




body.dark-mode .blog-item h3 {
    color: var(--pink-200);
}

body.dark-mode .blog-tag {
    background: var(--accent-soft);
    color: var(--pink-500);
    border-color: var(--accent-hover);
}















body.dark-mode hr {
    border-color: var(--glass-08);
}


body.dark-mode .post-content h2 {
    color: var(--text-heading);
    border-left-color: var(--pink-400);
}

body.dark-mode .post-content h3 {
    color: var(--pink-500);
}


body.dark-mode .post-content p {
    color: var(--text-secondary);
}

body.dark-mode .post-content strong {
    color: var(--text-heading);
}


body.dark-mode .blog-tag {
    background: var(--accent-soft);
    color: var(--pink-500);
    border-color: var(--accent-hover);
}





body.dark-mode .comment-form-row input[type="text"] {
    background: var(--surface-card);
    border-color: var(--glass-10);
    color: var(--text-secondary);
}


/* ============= 点击粒子动画 ============= */
.click-spark-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    overflow: hidden;
}

.click-spark-particle {
    position: absolute;
    pointer-events: none;
    will-change: transform, opacity;
    box-shadow: 0 0 8px var(--accent-glow);
    animation: sparkPulse 0.15s ease-out;
}

@keyframes sparkPulse {
    0% { transform: scale(0); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}



body.dark-mode #commentImgName {
    color: var(--text-muted) !important;
}





/* ============= 滚动渐显动画 ============= */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 交替方向 */
.reveal-left  { transform: translateX(-28px); }
.reveal-right { transform: translateX(28px); }
.reveal-left.visible,
.reveal-right.visible { transform: translateX(0); }

/* ============= 回到顶部按钮 ============= */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 28px;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--pink-500);
    color: var(--white);
    font-size: 18px;
    border: none;
    cursor: pointer;
    z-index: 99;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 16px var(--accent-shadow-strong);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px var(--accent-shadow-strong);
}