:root {
    --page-blog-bg: #08160F;
    --page-blog-card-bg: #11271B;
    --page-blog-text-main: #F2FFF6;
    --page-blog-text-secondary: #A7D9B8;
    --page-blog-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    --page-blog-button-text: #ffffff;
    --page-blog-border: #2E7A4E;
    --page-blog-glow: #57E38D;
    --page-blog-gold: #F2C14E;
    --page-blog-divider: #1E3A2A;
    --page-blog-deep-green: #0A4B2C;
}

.page-blog {
    background-color: var(--page-blog-bg);
    color: var(--page-blog-text-main);
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    overflow-x: hidden; /* Prevent horizontal scroll */
}

.page-blog__section {
    padding: 60px 0;
    text-align: center;
}

.page-blog__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.page-blog__section-title {
    font-size: clamp(2em, 4vw, 2.8em);
    color: var(--page-blog-text-main);
    margin-bottom: 20px;
    font-weight: bold;
}

.page-blog__section-title--light {
    color: var(--page-blog-text-main);
}

.page-blog__section-description {
    font-size: 1.1em;
    color: var(--page-blog-text-secondary);
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero Section */
.page-blog__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding-top: 10px; /* Small top padding */
    padding-bottom: 60px;
    min-height: 500px;
    overflow: hidden;
}

.page-blog__hero-image-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.page-blog__hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.5); /* Darken image for text readability, not color change */
}

.page-blog__hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    text-align: center;
    padding: 20px;
    box-sizing: border-box;
}

.page-blog__main-title {
    font-size: clamp(2.5em, 5vw, 3.5em);
    color: var(--page-blog-gold);
    margin-bottom: 20px;
    font-weight: 900;
    line-height: 1.2;
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.page-blog__intro-text {
    font-size: 1.2em;
    color: var(--page-blog-text-main);
    margin-bottom: 30px;
    text-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
}

/* Buttons */
.page-blog__btn-primary,
.page-blog__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-blog__btn-primary {
    background: var(--page-blog-button-gradient);
    color: var(--page-blog-button-text);
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-blog__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

.page-blog__btn-secondary {
    background: transparent;
    color: var(--page-blog-text-main);
    border: 2px solid var(--page-blog-border);
    margin-left: 20px;
}

.page-blog__btn-secondary:hover {
    background: var(--page-blog-border);
    color: var(--page-blog-text-main);
    transform: translateY(-3px);
}

/* Latest Posts Grid */
.page-blog__latest-posts {
    background-color: var(--page-blog-bg);
}

.page-blog__posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-blog__blog-card {
    background-color: var(--page-blog-card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    text-align: left;
    transition: transform 0.3s ease;
    border: 1px solid var(--page-blog-divider);
}

.page-blog__blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-blog__card-image {
    width: 100%;
    height: 225px; /* Fixed height for consistency */
    object-fit: cover;
    display: block;
}

.page-blog__card-content {
    padding: 25px;
}

.page-blog__card-title {
    font-size: 1.4em;
    margin-bottom: 10px;
    line-height: 1.3;
}

.page-blog__card-title a {
    color: var(--page-blog-text-main);
    text-decoration: none;
    transition: color 0.3s ease;
}

.page-blog__card-title a:hover {
    color: var(--page-blog-gold);
}

.page-blog__card-meta {
    font-size: 0.9em;
    color: var(--page-blog-text-secondary);
    margin-bottom: 15px;
}

.page-blog__card-excerpt {
    font-size: 1em;
    color: var(--page-blog-text-secondary);
    margin-bottom: 20px;
}

.page-blog__card-link {
    display: inline-block;
    color: var(--page-blog-gold);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

.page-blog__card-link:hover {
    color: var(--page-blog-glow);
}

.page-blog__view-all-button-wrapper {
    margin-top: 50px;
}

/* Categories Section */
.page-blog__categories {
    background-color: var(--page-blog-deep-green);
    border-top: 1px solid var(--page-blog-divider);
    border-bottom: 1px solid var(--page-blog-divider);
}

.page-blog__category-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-blog__category-item {
    background-color: var(--page-blog-card-bg);
    padding: 30px;
    border-radius: 10px;
    text-align: left;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--page-blog-divider);
}

.page-blog__category-title {
    font-size: 1.3em;
    color: var(--page-blog-text-main);
    margin-bottom: 10px;
}

.page-blog__category-description {
    font-size: 0.95em;
    color: var(--page-blog-text-secondary);
    margin-bottom: 20px;
}

/* Why Read Section */
.page-blog__why-read {
    background-color: var(--page-blog-bg);
}

.page-blog__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-blog__feature-item {
    background-color: var(--page-blog-card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--page-blog-divider);
}

.page-blog__feature-icon {
    width: 100px;
    height: 100px;
    object-fit: contain;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 5px var(--page-blog-glow)); /* Allowed for decorative shadow, not color change */
}

.page-blog__feature-title {
    font-size: 1.3em;
    color: var(--page-blog-text-main);
    margin-bottom: 10px;
}

.page-blog__feature-description {
    font-size: 0.95em;
    color: var(--page-blog-text-secondary);
}

/* CTA Section */
.page-blog__cta-section {
    background-color: var(--page-blog-deep-green);
    border-top: 1px solid var(--page-blog-divider);
    border-bottom: 1px solid var(--page-blog-divider);
    padding: 80px 0;
}

.page-blog__cta-container {
    max-width: 900px;
}

.page-blog__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

/* FAQ Section */
.page-blog__faq-section {
    background-color: var(--page-blog-bg);
}

.page-blog__faq-list {
    max-width: 800px;
    margin: 40px auto 0 auto;
    text-align: left;
}

.page-blog__faq-item {
    background-color: var(--page-blog-card-bg);
    border: 1px solid var(--page-blog-divider);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-blog__faq-item summary {
    list-style: none; /* Hide default marker */
    cursor: pointer;
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    font-size: 1.1em;
    color: var(--page-blog-text-main);
    background-color: var(--page-blog-deep-green);
    border-bottom: 1px solid var(--page-blog-divider);
    transition: background-color 0.3s ease;
}

.page-blog__faq-item summary:hover {
    background-color: var(--page-blog-border);
}

.page-blog__faq-item summary::-webkit-details-marker {
    display: none; /* Hide default marker for Webkit */
}

.page-blog__faq-qtext {
    flex-grow: 1;
    color: var(--page-blog-text-main);
}

.page-blog__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    width: 20px;
    text-align: center;
    color: var(--page-blog-gold);
}

.page-blog__faq-item[open] .page-blog__faq-toggle {
    content: "−";
}

.page-blog__faq-answer {
    padding: 20px 25px;
    font-size: 1em;
    color: var(--page-blog-text-secondary);
    background-color: var(--page-blog-card-bg);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .page-blog__main-title {
        font-size: clamp(2em, 4.5vw, 3em);
    }
    .page-blog__intro-text {
        font-size: 1.1em;
    }
    .page-blog__section-title {
        font-size: clamp(1.8em, 3.5vw, 2.5em);
    }
}

@media (max-width: 768px) {
    .page-blog__section {
        padding: 40px 0;
    }
    .page-blog__container {
        padding: 0 15px;
    }

    .page-blog__hero-section {
        padding-bottom: 40px;
        min-height: 400px;
    }

    .page-blog__main-title {
        font-size: clamp(1.8em, 7vw, 2.5em);
    }

    .page-blog__intro-text {
        font-size: 1em;
    }

    /* Mobile forced responsive for images, videos, buttons */
    .page-blog img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    
    .page-blog video,
    .page-blog__video {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    
    .page-blog__video-section,
    .page-blog__video-container,
    .page-blog__video-wrapper {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden !important;
    }
    
    .page-blog__video-section {
        padding-top: 10px !important; /* body đã xử lý --header-offset */
    }

    .page-blog__cta-button,
    .page-blog__btn-primary,
    .page-blog__btn-secondary,
    .page-blog a[class*="button"],
    .page-blog a[class*="btn"] {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        margin-left: 0 !important; /* Reset margin for vertical stacking */
        margin-bottom: 15px; /* Add space between stacked buttons */
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .page-blog__cta-buttons {
        flex-direction: column !important;
        gap: 0 !important; /* Gap handled by margin-bottom on buttons */
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden !important;
    }

    .page-blog__posts-grid,
    .page-blog__category-list,
    .page-blog__features-grid {
        grid-template-columns: 1fr; /* Single column layout */
        gap: 20px;
    }

    .page-blog__blog-card,
    .page-blog__category-item,
    .page-blog__feature-item {
        margin: 0 auto;
        max-width: 400px; /* Constrain max width for single column */
        width: 100%;
        box-sizing: border-box;
    }

    .page-blog__faq-list {
        padding: 0 15px;
    }
    .page-blog__faq-item summary {
        padding: 15px 20px;
        font-size: 1em;
    }
    .page-blog__faq-answer {
        padding: 15px 20px;
    }
}