.reading-progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: transparent;
    z-index: 9999;
}

.reading-progress-bar {
    height: 100%;
    background-color: #0080ff;
    width: 0%;
    transition: width 0.1s ease-out;
    box-shadow: 0 0 10px rgba(0, 210, 255, 0.7);
}

/* --- Article Content (Clean & Simple) --- */
.post-image {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 40px;
    border: 1px solid #dfdfdf;
}

.post-content,
.article-content {
    line-height: 1.8;
    font-size: 1.1rem;
    color: #222;
}

.article-content p {
    margin-bottom: 1.5rem;
}

/* Highlight First Paragraph */
.article-content p:first-of-type {
    font-size: 1.2rem;
    font-weight: bold;
    color: #000;
    border-left: 4px solid #1491ff;
    padding: 15px 20px;
    background: rgba(20, 145, 255, 0.05);
    border-radius: 0 8px 8px 0;
    margin-bottom: 2rem;
}

/* Headings */
.article-content h2 {
    color: #1491ff;
    font-size: 1.8rem;
    margin: 2.5rem 0 1.2rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.article-content h3 {
    color: #000;
    font-size: 1.4rem;
    margin: 2rem 0 1rem;
}

/* Clean Blockquote */
.article-content blockquote {
    background: #f8f9fa;
    border-left: 4px solid #1491ff;
    margin: 2rem 0;
    padding: 20px;
    font-style: italic;
    color: #555;
    border-radius: 0 8px 8px 0;
    font-size: 1.05rem;
}

/* --- Buttons & Share Links --- */
.back-btn,
.back-btn-bottom {
    display: inline-block;
    color: #1491ff;
    text-decoration: none;
    font-weight: bold;
    transition: 0.2s ease;
}

.back-btn {
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.back-btn:hover {
    transform: translateX(-5px);
}

.back-btn-bottom {
    font-size: 0.95rem;
    padding: 8px 16px;
    border: 1px solid rgba(20, 145, 255, 0.3);
    border-radius: 8px;
}

.back-btn-bottom:hover {
    background: rgba(20, 145, 255, 0.1);
    border-color: #1491ff;
}

/* --- Footer & Related --- */
.post-footer-share {
    margin: 50px 0 30px;
    padding: 30px 0;
    border-top: 1px solid #dfdfdf;
    border-bottom: 1px solid #dfdfdf;
}

.post-footer-share h3,
.related-header h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #000;
}

.related-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.share-container {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.share-link {
    padding: 6px 12px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: bold;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: 0.2s;
}

.share-link:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.wa {
    background: #25D366;
}

.tg {
    background: #0088cc;
}

.fb {
    background: #1877F2;
}

.x,
.copy {
    background: #000;
}

/* --- Toast Notification --- */
.custom-toast {
    visibility: hidden;
    min-width: 250px;
    background: #1491ff;
    color: #fff;
    text-align: center;
    border-radius: 8px;
    padding: 12px 20px;
    position: fixed;
    z-index: 10000;
    left: 50%;
    bottom: 20px;
    transform: translateX(-50%);
    font-size: 0.95rem;
    font-weight: bold;
    box-shadow: 0 10px 25px rgba(20, 145, 255, 0.4);
    opacity: 0;
    transition: opacity 0.3s, bottom 0.3s, visibility 0.3s;
}

.custom-toast.show {
    visibility: visible;
    opacity: 1;
    bottom: 40px;
}