:root {
    --primary: #00213f;
    --secondary: #0090d4;
    --accent: #00b4f2;
    --light: #f8fcff;
    --lighter: #e8f0fc;
    --white: #ffffff;
    --gray: #6c757d;
    --shadow: rgba(0, 33, 63, 0.2);
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.rka-scope {
    font-family: "Inter", sans-serif;
    background: var(--light);
    color: var(--primary);
    line-height: 1.8;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

.rka-scope h1,
.rka-scope h2,
.rka-scope h3,
.rka-scope h4,
.rka-scope h5,
.rka-scope h6 {
    font-family: "Lora", serif;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.3px;
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Hero Section */
.hero-section {
    position: relative;
    height: 70vh;
    min-height: 600px;
    overflow: hidden;
    background: var(--primary);
    margin: 0;
    padding: 0;
    width: 100%;
}

.hero-slide {
    position: relative;
    width: 100%;
    height: 90vh;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-slide-1 {
    background: linear-gradient(
        135deg,
        rgba(0, 33, 63, 0.8),
        rgba(0, 144, 212, 0.7)
    );
}

.hero-content {
    text-align: center;
    max-width: 900px;
    width: 90%;
    margin: 4rem auto 0;
    padding: 2.5rem;
    color: var(--white);
    background: rgba(0, 33, 63, 0.15);
    backdrop-filter: blur(8px);
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0, 33, 63, 0.2);
    position: relative;
}

.hero-content h1 {
    font-size: clamp(2rem, 6vw, 3.5rem);
    margin-bottom: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--white), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: clamp(0.9rem, 3vw, 1.2rem);
    font-weight: 400;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.btn-primary-filled,
.btn-primary-outline {
    font-family: "Inter", sans-serif;
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    font-weight: 600;
    padding: 0.8rem 2.5rem;
    border-radius: 50px;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    margin: 0 0.8rem;
    position: relative;
    overflow: hidden;
}

.btn-primary-filled {
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    color: var(--white);
    border: none;
}

.btn-primary-filled:hover {
    background: linear-gradient(90deg, var(--accent), var(--secondary));
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 144, 212, 0.3);
}

.btn-primary-outline {
    background: transparent;
    border: 2px solid var(--white);
    color: var(--white);
}

.btn-primary-outline:hover {
    background: var(--white);
    color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 33, 63, 0.2);
}

.btn-primary-filled i,
.btn-primary-outline i {
    margin-left: 8px;
    transition: transform 0.3s;
}

.btn-primary-filled:hover i,
.btn-primary-outline:hover i {
    transform: translateX(4px);
}

/* Featured and Recent Articles Sections */
.articles-section,
.recent-articles-section {
    padding: 7rem 0;
    background: linear-gradient(180deg, var(--white), var(--lighter));
}

.articles-section h2,
.recent-articles-section h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    text-align: center;
    margin-bottom: 1.8rem;
}

.articles-section .lead,
.recent-articles-section .lead {
    font-size: clamp(0.95rem, 2.5vw, 1.15rem);
    color: var(--gray);
    max-width: 1000px;
    margin: 0 auto 3.5rem;
    text-align: center;
}

.article-card {
    background: linear-gradient(135deg, var(--white), var(--light));
    border: 1px solid var(--lighter);
    border-radius: 16px;
    box-shadow: 0 8px 25px var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.article-card .image-container {
    position: relative;
    width: 100%;
    height: 320px;
}

.article-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.article-card:hover img {
    transform: scale(1.1);
}

.article-card .gradient-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    opacity: 1;
    transition: opacity 0.3s ease;
}

.article-card:hover .gradient-overlay {
    opacity: 0;
}

.article-card .title-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    color: var(--white);
    opacity: 1;
    transition: opacity 0.3s ease;
}

.article-card:hover .title-overlay {
    opacity: 0;
}

.article-card .title-overlay h3 {
    font-size: clamp(1.4rem, 3vw, 1.6rem);
    margin: 0;
}

.article-card .content-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(0, 33, 63, 0.85),
        rgba(0, 33, 63, 0.45)
    );
    opacity: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    transform: translateY(100%);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.article-card:hover .content-overlay {
    opacity: 1;
    transform: translateY(0);
}

.article-card .category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent);
    color: var(--white);
    font-size: clamp(0.75rem, 2vw, 0.9rem);
    border-radius: 9999px;
    margin-bottom: 0.5rem;
    width: fit-content;
    transition: var(--transition);
}

.article-card .category:hover {
    box-shadow: 0 2px 8px rgba(0, 144, 212, 0.3);
}

.article-card h3 {
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    color: var(--white);
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.article-card h3:hover {
    color: var(--accent);
    transform: scale(1.05);
}

.article-card p {
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    color: var(--white);
    margin-bottom: 0;
}

/* Article Overlay */
.article-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 33, 63, 0.95);
    display: none;
    align-items: flex-start;
    justify-content: center;
    z-index: 1000;
    overflow-y: auto;
    padding: 2rem;
}

.article-overlay.active {
    display: flex;
}

.article-overlay-content {
    background: var(--white);
    max-width: 900px;
    width: 100%;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 33, 63, 0.3);
    position: relative;
    margin: 2rem auto;
}

.article-overlay-content .category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent);
    color: var(--white);
    font-size: clamp(0.75rem, 2vw, 0.9rem);
    border-radius: 9999px;
    margin-bottom: 1rem;
}

.article-overlay-content h3 {
    font-size: clamp(1.6rem, 4vw, 2rem);
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.article-overlay-content .lead {
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
    color: var(--gray);
    margin-bottom: 1rem;
}

.article-overlay-content .meta {
    font-size: clamp(0.85rem, 2.2vw, 0.95rem);
    color: var(--gray);
    margin-bottom: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.article-overlay-content .content {
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
    color: var(--primary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.article-overlay-content .tags {
    margin-bottom: 2rem;
}

.article-overlay-content .tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--lighter);
    color: var(--primary);
    font-size: clamp(0.75rem, 2vw, 0.9rem);
    border-radius: 9999px;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.article-overlay-content .tag:hover {
    background: var(--accent);
    color: var(--white);
}

.article-overlay-content .share {
    margin-bottom: 2rem;
}

.btn-share {
    font-family: "Inter", sans-serif;
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    font-weight: 600;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    background: var(--secondary);
    color: var(--white);
    border: none;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.btn-share:hover {
    background: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 144, 212, 0.3);
}

.btn-share i {
    margin-left: 8px;
}

.article-overlay-content .back-link {
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    color: var(--primary);
    text-decoration: none;
    margin-bottom: 2rem;
    display: inline-block;
    transition: var(--transition);
}

.article-overlay-content .back-link:hover {
    color: var(--accent);
    text-decoration: underline;
}

.article-overlay-content .toc {
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--light);
    border-radius: 8px;
}

.article-overlay-content .toc h4 {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    margin-bottom: 0.5rem;
}

.article-overlay-content .toc p {
    font-size: clamp(0.85rem, 2.2vw, 0.95rem);
    color: var(--gray);
}

.article-overlay-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--white);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.article-overlay-close i {
    font-size: 1.5rem;
    color: var(--primary);
}

.article-overlay-close:hover {
    background: var(--accent);
    transform: scale(1.1);
}

.article-overlay-close:hover i {
    color: var(--white);
}

.btn-all {
    font-family: "Inter", sans-serif;
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    font-weight: 600;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: var(--white);
    border: none;
    margin: 4rem auto 0;
    text-align: center;
    z-index: 10;
    position: relative;
}

.btn-all:hover {
    background: var(--secondary);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 144, 212, 0.3);
}

.btn-all i {
    margin-left: 8px;
    transition: transform 0.3s;
}

.btn-all:hover i {
    transform: translateX(4px);
}

.articles-section .btn-all-container,
.recent-articles-section .btn-all-container {
    display: flex;
    justify-content: center;
}

/* Responsive */
@media (min-width: 1400px) {
    .section-container {
        max-width: 1400px;
    }
    .articles-section,
    .recent-articles-section {
        padding: 5rem 0;
        margin-left: -5rem;
    }
}

@media (max-width: 991px) {
    .hero-section {
        height: 80vh;
        min-height: 500px;
    }
    .hero-slide {
        height: 80vh;
    }
    .hero-content {
        margin: 0 auto;
        padding: 1.5rem;
        width: 90%;
        position: relative;
        top: 0;
    }
    .hero-content h1 {
        font-size: clamp(1.8rem, 5vw, 3rem);
    }
    .hero-content p {
        font-size: clamp(0.85rem, 2.8vw, 1.1rem);
    }
    .btn-primary-filled,
    .btn-primary-outline,
    .btn-all,
    .btn-share {
        padding: 0.7rem 2rem;
        font-size: clamp(0.85rem, 2.2vw, 0.95rem);
    }
    .articles-section,
    .recent-articles-section {
        padding: 5rem 0;
        margin-right: 0;
    }
    .articles-section h2,
    .recent-articles-section h2 {
        font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    }
    .articles-section .lead,
    .recent-articles-section .lead {
        font-size: clamp(0.85rem, 2.2vw, 1.05rem);
    }
    .article-card .image-container {
        height: 300px;
    }
    .article-card .title-overlay h3 {
        font-size: clamp(1.2rem, 2.8vw, 1.4rem);
    }
    .article-card .content-overlay h3 {
        font-size: clamp(1.4rem, 3vw, 1.6rem);
    }
    .article-card .category,
    .article-card p {
        font-size: clamp(0.75rem, 2vw, 0.9rem);
    }
    .article-overlay-content {
        padding: 1.5rem;
        margin: 1.5rem auto;
    }
    .article-overlay-content h3 {
        font-size: clamp(1.4rem, 3.5vw, 1.8rem);
    }
    .article-overlay-content .lead,
    .article-overlay-content .content {
        font-size: clamp(0.85rem, 2.2vw, 1rem);
    }
    .article-overlay-content .meta,
    .article-overlay-content .toc p,
    .article-overlay-content .tag {
        font-size: clamp(0.75rem, 2vw, 0.9rem);
    }
}

@media (max-width: 767px) {
    .hero-section {
        height: 70vh;
        min-height: 450px;
    }
    .hero-slide {
        height: 70vh;
    }
    .hero-content {
        margin: 0 auto;
        padding: 1.5rem;
        width: 90%;
        position: relative;
        top: 0;
    }
    .hero-content h1 {
        font-size: clamp(1.6rem, 4.5vw, 2.5rem);
    }
    .hero-content p {
        font-size: clamp(0.8rem, 2.5vw, 1rem);
    }
    .btn-primary-filled,
    .btn-primary-outline,
    .btn-all,
    .btn-share {
        padding: 0.6rem 1.8rem;
        font-size: clamp(0.75rem, 2vw, 0.9rem);
        min-width: 160px;
    }
    .articles-section,
    .recent-articles-section {
        padding: 4rem 0;
        margin-right: 0;
    }
    .articles-section h2,
    .recent-articles-section h2 {
        font-size: clamp(1.5rem, 3.2vw, 2rem);
    }
    .articles-section .lead,
    .recent-articles-section .lead {
        font-size: clamp(0.8rem, 2.2vw, 0.95rem);
    }
    .article-card .image-container {
        height: 280px;
    }
    .article-card .content-overlay {
        opacity: 1;
        transform: translateY(0);
        background: rgba(0, 33, 63, 0.55);
    }
    .article-card .gradient-overlay,
    .article-card .title-overlay {
        opacity: 0;
    }
    .article-card .title-overlay h3 {
        font-size: clamp(1rem, 2.5vw, 1.2rem);
    }
    .article-card .content-overlay h3 {
        font-size: clamp(1.2rem, 2.8vw, 1.4rem);
    }
    .article-card .category,
    .article-card p {
        font-size: clamp(0.7rem, 2vw, 0.85rem);
    }
    .article-overlay-content {
        padding: 1.5rem;
        margin: 1.5rem auto;
    }
    .article-overlay-content h3 {
        font-size: clamp(1.2rem, 3vw, 1.6rem);
    }
    .article-overlay-content .lead,
    .article-overlay-content .content {
        font-size: clamp(0.8rem, 2.2vw, 0.95rem);
    }
    .article-overlay-content .meta,
    .article-overlay-content .toc p,
    .article-overlay-content .tag {
        font-size: clamp(0.7rem, 1.8vw, 0.85rem);
    }
}

@media (max-width: 576px) {
    .hero-section {
        height: 50vh;
        min-height: 400px;
        position: relative;
    }
    .hero-slide {
        height: 100vh;
    }
    .hero-content {
        position: absolute;
        top: 25%;
        left: 50%;
        transform: translate(-50%, -50%);
        padding: 1rem;
        width: 80%;
        max-width: none;
    }
    .hero-content h1 {
        font-size: clamp(1.4rem, 4vw, 2rem);
    }
    .hero-content p {
        font-size: clamp(0.75rem, 2.2vw, 0.9rem);
    }
    .btn-primary-filled,
    .btn-primary-outline,
    .btn-all,
    .btn-share {
        padding: 0.6rem 1.8rem;
        font-size: clamp(0.7rem, 2vw, 0.85rem);
        width: 100%;
        max-width: 280px;
    }
    .articles-section,
    .recent-articles-section {
        padding: 3rem 0;
        margin-right: 0;
    }
    .articles-section h2,
    .recent-articles-section h2 {
        font-size: clamp(1.5rem, 3.2vw, 1.8rem);
    }
    .articles-section .lead,
    .recent-articles-section .lead {
        font-size: clamp(0.75rem, 2.2vw, 0.9rem);
    }
    .article-card .image-container {
        height: 260px;
    }
    .article-card .title-overlay h3 {
        font-size: clamp(0.9rem, 2.2vw, 1.1rem);
    }
    .article-card .content-overlay h3 {
        font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    }
    .article-card .category,
    .article-card p {
        font-size: clamp(0.65rem, 1.8vw, 0.8rem);
    }
    .article-overlay-content {
        padding: 1rem;
        margin: 1rem auto;
    }
    .article-overlay-content h3 {
        font-size: clamp(1.1rem, 2.8vw, 1.5rem);
    }
    .article-overlay-content .lead,
    .article-overlay-content .content {
        font-size: clamp(0.75rem, 2vw, 0.9rem);
    }
    .article-overlay-content .meta,
    .article-overlay-content .toc p,
    .article-overlay-content .tag {
        font-size: clamp(0.65rem, 1.8vw, 0.8rem);
    }
    .article-overlay-close {
        width: 32px;
        height: 32px;
    }
    .article-overlay-close i {
        font-size: 1.2rem;
    }
    .section-container {
        padding: 0 12px;
    }
}