/* --- CSS Variables & Global Styles --- */
        :root {
            --wakai-blue: #0072BC;
            --wakai-accent: #FF8C00;
            --bg-color: #000000;
            --text-color: #FFFFFF;
            --text-secondary: #B0B0B0;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html { scroll-behavior: smooth; }
        body { 
            font-family: 'Inter', sans-serif; 
            line-height: 1.6; 
            color: var(--text-color); 
            background-color: var(--bg-color); 
            overflow-x: hidden;
            transition: background 0.3s ease, color 0.3s ease;
        }

        

        /* Progress Bar */
        .progress-bar {
            position: fixed;
            top: 0;
            left: 0;
            height: 2px;
            background: var(--wakai-blue);
            z-index: 1002;
            transition: width 0.3s ease;
        }

        /* Navigation */
        nav {
            position: fixed;
            width: 100%;
            top: 0;
            background: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(10px);
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
            transition: all 0.3s ease;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-color);
            cursor: pointer;
            transition: transform 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .logo:hover {
            transform: scale(1.05);
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
            margin-right: 60px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-secondary);
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            padding: 0.5rem 0;
        }

        .nav-links a:hover {
            color: var(--wakai-blue);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--wakai-blue);
            transition: width 0.3s ease;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .cta {
            display: inline-block;
            padding: 0.7rem 1.5rem;
            background: var(--wakai-accent);
            color: var(--bg-color) !important;
            border: none;
            border-radius: 5px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .cta:hover {
            transform: translateY(-2px);
            background-color: #ffaa33;
        }

        /* Mobile Navigation */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
            z-index: 1001;
        }

        .mobile-menu-btn span {
            display: block;
            width: 25px;
            height: 3px;
            background: var(--wakai-blue);
            margin: 5px 0;
            transition: all 0.3s ease;
            border-radius: 2px;
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -6px);
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
                position: relative;
                z-index: 1001;
            }

            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 80%;
                max-width: 300px;
                height: 100vh;
                background: rgba(0, 0, 0, 0.9);
                flex-direction: column;
                padding: 5rem 2rem 2rem;
                gap: 1.5rem;
                margin: 0;
                transition: right 0.3s ease;
                box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
            }

            .nav-links.active {
                right: 0;
            }

            .nav-links a {
                font-size: 1.2rem;
            }

        }

        /* Blog Hero Section */
        .blog-hero {
            min-height: 0vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            background: linear-gradient(135deg, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.7) 100%);
            overflow: hidden;
            margin-top: 70px;
        }

        .blog-hero-content {
            position: relative;
            z-index: 6;
            text-align: center;
            padding: 2rem;
        }

        .blog-hero h1 {
            font-size: clamp(2.5rem, 6vw, 4rem);
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-color);
            opacity: 0;
            animation: fadeInUp 1s ease forwards;
        }

        .blog-hero p {
            font-size: clamp(1.1rem, 2.5vw, 1.3rem);
            color: var(--text-secondary);
            opacity: 0;
            animation: fadeInUp 1s ease 0.2s forwards;
        }

        /* Blog Grid */
        .blog-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 4rem 2rem;
            position: relative;
            z-index: 6;
        }

        .blog-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2rem;
            margin-bottom: 4rem;
        }

        @media (max-width: 768px) {
            .blog-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Blog Card */
        .blog-card {
            background: rgba(0, 0, 0, 0.7);
            border: 1px solid rgba(0, 114, 188, 0.3);
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
            opacity: 1;
            transform: translateY(0);
            animation: none;
            backdrop-filter: blur(5px);
            pointer-events: auto;
        }

        .blog-card.initial-load {
            opacity: 0;
            transform: translateY(30px);
            animation: fadeInUp 0.6s ease forwards;
        }

        .blog-card:hover {
            transform: translateY(-5px);
            border-color: var(--wakai-blue);
            box-shadow: 0 15px 40px rgba(0, 114, 188, 0.2);
        }

        .blog-card-image {
            height: 60px;
            background: linear-gradient(135deg, rgba(0, 114, 188, 0.2) 0%, rgba(255, 140, 0, 0.2) 100%);
            position: relative;
            overflow: hidden;
        }

        .blog-card-image::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, transparent 0%, rgba(0, 0, 0, 0.4) 100%);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .blog-card:hover .blog-card-image::before {
            opacity: 1;
        }

        .blog-card-image .blog-category-tag {
            position: absolute;
            top: 1rem;
            left: 1rem;
            padding: 0.3rem 1rem;
            background: rgba(0, 0, 0, 0.5) !important;
            border: 1px solid var(--wakai-accent) !important;
            color: var(--wakai-accent) !important;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            z-index: 10;
        }

        .blog-card-content {
            padding: 1.25rem;
        }

        .blog-date {
            color: var(--text-secondary);
            font-size: 0.85rem;
            margin-bottom: 0.4rem;
        }

        .blog-card h3 {
            font-size: 1.1rem;
            margin-bottom: 0.75rem;
            color: var(--text-color);
            line-height: 1.4;
        }

        .blog-card p {
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 0.75rem;
            font-size: 0.95rem;
        }

        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--wakai-blue);
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .read-more:hover {
            gap: 1rem;
            color: var(--wakai-accent);
        }

        .read-more::after {
            content: '→';
            transition: transform 0.3s ease;
        }

        .read-more:hover::after {
            transform: translateX(5px);
        }

        /* Featured Post */
        .featured-post {
            background: linear-gradient(135deg, rgba(0, 114, 188, 0.2) 0%, rgba(255, 140, 0, 0.2) 100%);
            border: 1px solid var(--wakai-blue);
            color: var(--text-color);
            border-radius: 8px;
            padding: 3rem;
            margin-bottom: 3rem;
            position: relative;
            overflow: hidden;
            cursor: pointer;
            transition: all 0.3s ease;
            backdrop-filter: blur(5px);
            pointer-events: auto;
        }

        .featured-post::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 114, 188, 0.1) 0%, transparent 70%);
            animation: float 20s ease-in-out infinite;
        }

        .featured-post:hover {
            transform: scale(1.02);
            box-shadow: 0 20px 50px rgba(0, 114, 188, 0.3);
            border-color: var(--wakai-accent);
        }

        .featured-content {
            position: relative;
            z-index: 2;
        }

        .featured-label {
            display: inline-block;
            padding: 0.3rem 1rem;
            background: transparent;
            border: 1px solid var(--wakai-accent);
            color: var(--wakai-accent);
            border-radius: 5px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1rem;
            backdrop-filter: blur(10px);
        }

        .featured-post h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            margin-bottom: 1rem;
            line-height: 1.2;
        }

        .featured-post p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        /* Category Filter */
        .category-filter {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            padding: 2rem;
            background: rgba(0, 0, 0, 0.3);
            position: relative;
            top: auto;
            z-index: 100;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-top: 1px solid rgba(0, 114, 188, 0.2);
            margin-top: 2rem;
        }

        .category-btn {
            padding: 0.5rem 1.5rem;
            background: transparent;
            border: 1px solid var(--wakai-blue);
            color: var(--wakai-blue);
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .category-btn:hover,
        .category-btn.active {
            background: var(--wakai-blue);
            border-color: var(--wakai-blue);
            color: var(--text-color);
            transform: translateY(-2px);
        }

        /* Newsletter Section */
        .newsletter {
            background: rgba(0, 0, 0, 0.7);
            border-top: 1px solid rgba(0, 114, 188, 0.2);
            padding: 4rem 2rem;
            text-align: center;
            position: relative;
            z-index: 6;
            backdrop-filter: blur(5px);
        }

        .newsletter h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            margin-bottom: 1rem;
            color: var(--text-color);
        }

        .newsletter-form {
            max-width: 500px;
            margin: 2rem auto 0;
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            justify-content: center;
        }

        .newsletter-input {
            flex: 1;
            min-width: 250px;
            padding: 1rem 1.5rem;
            background: rgba(0, 0, 0, 0.5);
            border: 1px solid var(--wakai-blue);
            border-radius: 5px;
            color: var(--text-color);
            font-size: 1rem;
            transition: all 0.3s ease;
        }

        .newsletter-input:focus {
            outline: none;
            border-color: var(--wakai-accent);
            box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.1);
        }

        .newsletter-btn {
            padding: 1rem 2rem;
            background: var(--wakai-accent);
            color: var(--bg-color);
            border: none;
            border-radius: 5px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .newsletter-btn:hover {
            transform: translateY(-2px);
            background-color: #ffaa33;
        }

        /* Footer */
        footer {
            background: rgba(0, 0, 0, 0.9);
            color: var(--text-secondary);
            padding: 2rem;
            text-align: center;
            font-size: 0.9rem;
            border-top: 1px solid rgba(0, 114, 188, 0.2);
            position: relative;
            z-index: 6;
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes float {
            0%, 100% {
                transform: translate(0, 0) scale(1);
            }
            50% {
                transform: translate(30px, -30px) scale(1.05);
            }
        }

        /* Article Page Styles */
        .article-page {
            display: none;
            min-height: 100vh;
            padding-top: 70px;
            position: relative;
            z-index: 6;
        }

        .article-page.active {
            display: block;
        }

        .article-container {
            max-width: 1200px; /* Changed from 900px to match blog container */
            margin: 0 auto;
            padding: 2rem;
        }

        .article-header {
            padding: 3rem;
            background: linear-gradient(135deg, rgba(0, 114, 188, 0.2) 0%, rgba(255, 140, 0, 0.2) 100%);
            border: 1px solid var(--wakai-blue);
            color: var(--text-color);
            border-radius: 8px;
            position: relative;
            overflow: hidden;
            margin-bottom: 2rem;
            backdrop-filter: blur(5px);
        }

        .article-header::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 114, 188, 0.1) 0%, transparent 70%);
            animation: float 20s ease-in-out infinite;
        }

        .article-back {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-color);
            text-decoration: none;
            margin-bottom: 1rem;
            font-weight: 600;
            position: relative;
            z-index: 2;
        }

        .article-back:hover {
            gap: 1rem;
        }

        .article-back::before {
            content: '←';
            transition: transform 0.3s ease;
        }

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

        .article-meta {
            position: relative;
            z-index: 1;
        }

        .article-category-badge {
            display: inline-block;
            padding: 0.3rem 1rem;
            background: transparent;
            border: 1px solid var(--wakai-accent);
            color: var(--wakai-accent);
            border-radius: 5px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .article-title {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 1rem;
            line-height: 1.2;
        }

        .article-info {
            display: flex;
            gap: 2rem;
            opacity: 0.9;
            font-size: 0.95rem;
        }

        .article-body {
            background: rgba(0, 0, 0, 0.7);
            border: 1px solid rgba(0, 114, 188, 0.3);
            border-radius: 0 0 8px 8px;
            padding: 3rem;
            color: var(--text-color);
            backdrop-filter: blur(5px);
        }

        .article-body p {
            font-size: 1.15rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .article-body h2 {
            font-size: 1.8rem;
            margin: 2.5rem 0 1.5rem;
            color: var(--text-color);
            position: relative;
            padding-left: 1rem;
        }

        .article-body h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 100%;
            background: var(--wakai-blue);
            border-radius: 2px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--wakai-accent);
            padding: 1.5rem 2rem;
            margin: 2rem 0;
            font-style: italic;
            color: var(--text-secondary);
            background: rgba(255, 140, 0, 0.1);
            border-radius: 0 8px 8px 0;
        }

        .article-body .highlight {
            color: var(--wakai-accent);
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .article-container {
                padding: 1rem;
            }

            .article-header {
                padding: 2rem 1.5rem 1.5rem;
                border-radius: 0;
            }

            .article-body {
                padding: 2rem 1.5rem;
            }

            .article-info {
                flex-direction: column;
                gap: 0.5rem;
            }
        }

        /* Loading screen */
        
            50% { opacity: 0.5; }
        }

/* Remove underlines from all links in blog cards */
.blog-card a,
.featured-post a {
    text-decoration: none;
}

.blog-card a:hover,
.featured-post a:hover {
    text-decoration: none;
}

/* Article card link styles */
.blog-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    height: 100%;
}

.featured-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.blog-card-link:hover,
.featured-link:hover {
    color: inherit;
    text-decoration: none;
}

/* CSS-only category filtering */
.blog-card {
    display: block;
}

/* Hide all cards by default when a specific category is selected */
#cat-ai:checked ~ .blog-container .blog-card:not([data-category="ai-innovation"]),
#cat-co:checked ~ .blog-container .blog-card:not([data-category="co-creation"]),
#cat-startup:checked ~ .blog-container .blog-card:not([data-category="startup-insights"]),
#cat-tech:checked ~ .blog-container .blog-card:not([data-category="tech-trends"]) {
    display: none;
}

/* Style active category button */
.category-filter input[type="radio"]:checked + label {
    background: var(--wakai-blue);
    border-color: var(--wakai-blue);
    color: var(--text-color);
    transform: translateY(-2px);
}

/* Icon styles for article metadata */
.icon {
    display: inline-block;
    vertical-align: middle;
    margin-right: 6px;
    color: var(--wakai-blue);
}

.info-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.article-info {
    display: flex;
    gap: 2rem;
    opacity: 0.9;
    font-size: 0.95rem;
    align-items: center;
}

@media (max-width: 768px) {
    .article-info {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
}

/* Ensure article page is visible by default on article pages */
.article-page.active {
    display: block;
}

/* Ensure blog home is visible on index */
#blogHomePage {
    display: block;
}