/* Custom Colors */
:root {
    --page-bg-color: #F4F7FB;
    --card-bg-color: #FFFFFF;
    --text-main-color: #1F2D3D;
    --text-black-color: #000000;
    --primary-color: #2F6BFF;
    --secondary-color: #6FA3FF;
    --border-color: #D6E2FF;
    --glow-color: #A5C4FF;
    --button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
}

.page-tin-tuc {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-main-color); /* Default text color for the page content */
    background-color: var(--page-bg-color);
}

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

.page-tin-tuc__section-title {
    font-size: clamp(28px, 4vw, 38px);
    font-weight: 700;
    color: var(--text-black-color);
    text-align: center;
    margin-bottom: 40px;
    margin-top: 60px;
}

.page-tin-tuc__sub-title {
    font-size: clamp(22px, 3vw, 28px);
    font-weight: 600;
    color: var(--primary-color);
    margin-top: 30px;
    margin-bottom: 15px;
}

/* Buttons */
.page-tin-tuc__btn-primary,
.page-tin-tuc__btn-secondary,
.page-tin-tuc__read-more-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    max-width: 100%; /* Button responsive base */
    box-sizing: border-box; /* Button responsive base */
    white-space: normal; /* Button text wrap base */
    word-wrap: break-word; /* Button text wrap base */
    text-align: center;
}

.page-tin-tuc__btn-primary {
    background: var(--button-gradient);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(47, 107, 255, 0.3);
}

.page-tin-tuc__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(47, 107, 255, 0.4);
}

.page-tin-tuc__btn-secondary {
    background: var(--card-bg-color);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.page-tin-tuc__btn-secondary:hover {
    background: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(47, 107, 255, 0.3);
}

.page-tin-tuc__read-more-btn {
    background: none;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 8px 15px;
    font-size: 14px;
    border-radius: 5px;
}

.page-tin-tuc__read-more-btn:hover {
    background: var(--primary-color);
    color: #ffffff;
}

/* Image styles */
.page-tin-tuc img {
    max-width: 100%;
    height: auto;
    display: block;
    object-fit: cover; /* Default for most images */
}

/* Hero Section */
.page-tin-tuc__hero-section {
    position: relative;
    padding-top: 10px; /* Small top margin, as body padding handles header offset */
    margin-bottom: 50px;
    overflow: hidden;
}

.page-tin-tuc__hero-image-wrapper {
    width: 100%;
    height: 500px; /* Fixed height for hero image on desktop */
    overflow: hidden;
    position: relative;
}

.page-tin-tuc__hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.page-tin-tuc__hero-content-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: rgba(0, 0, 0, 0.5); /* Overlay for readability */
    z-index: 1;
}

.page-tin-tuc__hero-content-wrapper .page-tin-tuc__container {
    padding: 40px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 10px;
    max-width: 800px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    color: #ffffff; /* Ensure text is white on dark overlay */
}

.page-tin-tuc__main-title {
    font-size: clamp(36px, 5vw, 52px);
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.page-tin-tuc__lead-text {
    font-size: clamp(18px, 2vw, 22px);
    color: #f0f0f0;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Latest News Section */
.page-tin-tuc__latest-news-section {
    padding: 50px 0;
    background-color: var(--card-bg-color);
}

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

.page-tin-tuc__article-card {
    background: var(--card-bg-color);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.page-tin-tuc__article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-tin-tuc__article-image-wrapper {
    height: 220px; /* Fixed height for article images */
    overflow: hidden;
}

.page-tin-tuc__article-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.page-tin-tuc__article-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.page-tin-tuc__article-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
}

.page-tin-tuc__article-title a {
    color: var(--text-black-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.page-tin-tuc__article-title a:hover {
    color: var(--primary-color);
}

.page-tin-tuc__article-meta {
    font-size: 13px;
    color: #666;
    margin-bottom: 15px;
}

.page-tin-tuc__article-excerpt {
    font-size: 15px;
    color: #555;
    margin-bottom: 20px;
    flex-grow: 1;
}

/* Pagination */
.page-tin-tuc__pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 30px;
}

.page-tin-tuc__pagination-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--card-bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main-color);
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s ease;
}

.page-tin-tuc__pagination-link:hover:not(.page-tin-tuc__pagination-link--disabled):not(.page-tin-tuc__pagination-link--active) {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
}

.page-tin-tuc__pagination-link--active {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
    font-weight: bold;
}

.page-tin-tuc__pagination-link--disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* About rg8369 Section */
.page-tin-tuc__about-rg8369-section {
    padding: 60px 0;
    background: var(--primary-color);
    color: #ffffff;
    text-align: center;
}

.page-tin-tuc__about-rg8369-section .page-tin-tuc__section-title {
    color: #ffffff;
    margin-bottom: 30px;
}

.page-tin-tuc__about-rg8369-section p {
    font-size: 17px;
    max-width: 900px;
    margin: 0 auto 20px auto;
    line-height: 1.7;
}

/* Why Choose Us Section */
.page-tin-tuc__why-choose-us-section {
    padding: 60px 0;
    background-color: var(--page-bg-color);
}

.page-tin-tuc__why-choose-us-section .page-tin-tuc__text-block {
    text-align: left;
}

.page-tin-tuc__why-choose-us-section p {
    margin-bottom: 15px;
    color: var(--text-main-color);
}

/* CTA Section */
.page-tin-tuc__cta-section {
    padding: 60px 0;
    background: var(--secondary-color);
    color: #ffffff;
    text-align: center;
}

.page-tin-tuc__cta-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
}

.page-tin-tuc__cta-content {
    flex: 1;
    min-width: 300px;
    text-align: left;
}

.page-tin-tuc__cta-content .page-tin-tuc__section-title {
    color: #ffffff;
    text-align: left;
    margin-top: 0;
    margin-bottom: 20px;
}

.page-tin-tuc__cta-content p {
    font-size: 18px;
    margin-bottom: 30px;
}

.page-tin-tuc__cta-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    width: 100%; /* Button container responsive base */
    max-width: 100%; /* Button container responsive base */
    overflow: hidden; /* Button container responsive base */
    box-sizing: border-box; /* Button container responsive base */
}

.page-tin-tuc__cta-image-wrapper {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-tin-tuc__cta-image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

/* FAQ Section */
.page-tin-tuc__faq-section {
    padding: 60px 0;
    background-color: var(--card-bg-color);
}

.page-tin-tuc__faq-list {
    max-width: 900px;
    margin: 0 auto;
}

details.page-tin-tuc__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: var(--card-bg-color);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
details.page-tin-tuc__faq-item summary.page-tin-tuc__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}
details.page-tin-tuc__faq-item summary.page-tin-tuc__faq-question::-webkit-details-marker {
  display: none;
}
details.page-tin-tuc__faq-item summary.page-tin-tuc__faq-question:hover {
  background: #f5f5f5;
}
.page-tin-tuc__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--text-black-color);
}
.page-tin-tuc__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color);
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
}
details.page-tin-tuc__faq-item .page-tin-tuc__faq-answer {
  padding: 0 20px 20px;
  background: #f9f9f9;
  border-radius: 0 0 8px 8px;
  color: var(--text-main-color);
}
details.page-tin-tuc__faq-item .page-tin-tuc__faq-answer p {
    margin-bottom: 10px;
}
details.page-tin-tuc__faq-item .page-tin-tuc__faq-answer p:last-child {
    margin-bottom: 0;
}


/* Responsive Styles */
@media (max-width: 1024px) {
    .page-tin-tuc__hero-image-wrapper {
        height: 400px;
    }
    .page-tin-tuc__hero-content-wrapper .page-tin-tuc__container {
        padding: 30px;
        max-width: 700px;
    }
    .page-tin-tuc__main-title {
        font-size: clamp(32px, 4.5vw, 48px);
    }
    .page-tin-tuc__lead-text {
        font-size: clamp(16px, 1.8vw, 20px);
    }
    .page-tin-tuc__articles-grid {
        gap: 20px;
    }
    .page-tin-tuc__article-image-wrapper {
        height: 200px;
    }
    .page-tin-tuc__article-title {
        font-size: 18px;
    }
    .page-tin-tuc__article-excerpt {
        font-size: 14px;
    }
    .page-tin-tuc__about-rg8369-section p,
    .page-tin-tuc__why-choose-us-section p {
        font-size: 16px;
    }
    .page-tin-tuc__cta-content p {
        font-size: 16px;
    }
    .page-tin-tuc__faq-qtext {
        font-size: 17px;
    }
}

@media (max-width: 768px) {
    /* General responsive */
    .page-tin-tuc__container {
        padding: 0 15px;
    }
    .page-tin-tuc__section-title {
        font-size: clamp(24px, 6vw, 32px);
        margin-top: 40px;
        margin-bottom: 30px;
    }
    .page-tin-tuc__sub-title {
        font-size: clamp(20px, 5vw, 24px);
    }

    /* HERO Section */
    .page-tin-tuc__hero-section {
        padding-top: 10px; /* Small top margin, as body padding handles header offset */
        margin-bottom: 30px;
    }
    .page-tin-tuc__hero-image-wrapper {
        height: 250px; /* Smaller height for mobile hero */
    }
    .page-tin-tuc__hero-image {
        object-fit: contain !important; /* HERO mobile: contain, not cover */
        aspect-ratio: unset !important;
    }
    .page-tin-tuc__hero-content-wrapper {
        position: relative; /* Remove absolute positioning on mobile to prevent text overlap */
        background: none; /* Remove overlay */
        height: auto;
        padding: 20px 0;
    }
    .page-tin-tuc__hero-content-wrapper .page-tin-tuc__container {
        padding: 20px;
        background: var(--card-bg-color);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        text-align: center;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-tin-tuc__main-title {
        font-size: clamp(28px, 7vw, 36px);
        color: var(--text-black-color);
        text-shadow: none;
        margin-bottom: 15px;
    }
    .page-tin-tuc__lead-text {
        font-size: 16px;
        color: var(--text-main-color);
        margin-bottom: 20px;
    }

    /* Latest News Section (Article grid) */
    .page-tin-tuc__latest-news-section {
        padding: 30px 0;
    }
    .page-tin-tuc__articles-grid {
        grid-template-columns: 1fr; /* Single column on mobile */
        gap: 20px;
        overflow-x: hidden; /* Prevent horizontal scroll */
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-tin-tuc__article-card {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-tin-tuc__article-image-wrapper {
        height: 180px;
    }
    .page-tin-tuc__article-title {
        font-size: 18px;
    }
    .page-tin-tuc__article-excerpt {
        font-size: 14px;
    }
    .page-tin-tuc__pagination {
        gap: 8px;
        margin-top: 20px;
    }
    .page-tin-tuc__pagination-link {
        min-width: 35px;
        height: 35px;
        font-size: 14px;
    }

    /* About rg8369 Section */
    .page-tin-tuc__about-rg8369-section {
        padding: 40px 0;
    }
    .page-tin-tuc__about-rg8369-section p {
        font-size: 15px;
        margin-bottom: 15px;
    }

    /* Why Choose Us Section */
    .page-tin-tuc__why-choose-us-section {
        padding: 40px 0;
    }
    .page-tin-tuc__why-choose-us-section p {
        font-size: 15px;
    }

    /* CTA Section */
    .page-tin-tuc__cta-section {
        padding: 40px 0;
    }
    .page-tin-tuc__cta-wrapper {
        flex-direction: column;
        gap: 30px;
    }
    .page-tin-tuc__cta-content {
        text-align: center;
        order: 2; /* Content after image on mobile */
    }
    .page-tin-tuc__cta-content .page-tin-tuc__section-title {
        text-align: center;
        margin-bottom: 15px;
    }
    .page-tin-tuc__cta-content p {
        font-size: 16px;
        margin-bottom: 25px;
    }
    .page-tin-tuc__cta-buttons {
        flex-direction: column; /* Buttons stack vertically */
        gap: 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 15px; /* Add padding to button container */
    }
    .page-tin-tuc__cta-image-wrapper {
        order: 1; /* Image before content on mobile */
    }
    .page-tin-tuc__cta-image {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
    }

    /* FAQ Section */
    .page-tin-tuc__faq-section {
        padding: 40px 0;
    }
    details.page-tin-tuc__faq-item summary.page-tin-tuc__faq-question { padding: 15px; }
}