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

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Inter', sans-serif;
    background: radial-gradient(ellipse at top, #0f0f23 0%, #0a0a0a 50%, #000000 100%);
    color: #ffffff;
    overflow-x: hidden;
    min-height: 100vh;
    font-weight: 300;
    letter-spacing: -0.01em;
}

/* Technical grid background */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    opacity: 0.03;
    background-image:
        linear-gradient(rgba(255,255,255,0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* Article Hero */
.article-hero {
    padding: 4rem 2rem 2rem;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    animation: fadeInUp 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.article-category {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    background: rgba(96, 165, 250, 0.1);
    border: 1px solid rgba(96, 165, 250, 0.2);
    border-radius: 50px;
    color: #60a5fa;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
}

.article-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #60a5fa 50%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.article-excerpt {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    padding: 2rem 0;
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #60a5fa, #a855f7);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* Article Layout */
.article-container {
    max-width: 1400px;
    margin: 4rem auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 4rem;
}

.article-content {
    background: rgba(15, 15, 25, 0.6);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 16px;
    padding: 4rem;
    backdrop-filter: blur(40px);
}

/* Featured Image */
.featured-image {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, rgba(96,165,250,0.1), rgba(168,85,247,0.1));
    border-radius: 12px;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(96,165,250,0.2);
}

.featured-image::before {
    content: '';
    position: absolute;
    left: -100%;
    top: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Content Typography */
.article-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin: 3rem 0 1.5rem;
}

.article-content h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
}

.article-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.7);
    margin-bottom: 1.5rem;
}

.article-content strong {
    color: #60a5fa;
}

/* Sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.sidebar-card {
    background: rgba(15, 15, 25, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 2rem;
    backdrop-filter: blur(40px);
    transition: all 0.3s ease;
}

.sidebar-card:hover {
    background: rgba(20, 20, 30, 0.8);
    border-color: rgba(96, 165, 250, 0.2);
    box-shadow: 0 10px 30px rgba(96, 165, 250, 0.1);
}

.sidebar-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #ffffff;
    letter-spacing: -0.01em;
}

.toc-list {
    list-style: none;
}

.toc-list li {
    margin-bottom: 1rem;
}

.toc-list a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    display: block;
    padding: 0.5rem 0;
}

.toc-list a:hover {
    color: #60a5fa;
    padding-left: 0.5rem;
}

.related-post {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.related-post:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.related-thumb {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1), rgba(168, 85, 247, 0.1));
    border-radius: 8px;
    flex-shrink: 0;
    border: 1px solid rgba(96, 165, 250, 0.2);
}

.related-info h4 {
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.related-info a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: color 0.3s ease;
}

.related-info a:hover {
    color: #60a5fa;
}

.related-date {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tag {
    padding: 0.5rem 1rem;
    background: rgba(96, 165, 250, 0.1);
    border: 1px solid rgba(96, 165, 250, 0.2);
    border-radius: 50px;
    color: #60a5fa;
    font-size: 0.8rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.tag:hover {
    background: rgba(96, 165, 250, 0.2);
    border-color: rgba(96, 165, 250, 0.4);
}

.share-buttons {
    display: flex;
    gap: 0.75rem;
}

.share-btn {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.share-btn:hover {
    background: rgba(96, 165, 250, 0.1);
    border-color: rgba(96, 165, 250, 0.3);
    transform: translateY(-2px);
}

.share-btn svg {
    width: 20px;
    height: 20px;
    color: rgba(255, 255, 255, 0.7);
}

/* CTA Section */
.article-cta {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1), rgba(168, 85, 247, 0.1));
    border: 1px solid rgba(96, 165, 250, 0.2);
    border-radius: 16px;
    padding: 3rem;
    text-align: center;
    margin: 4rem 0;
}

.article-cta h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #ffffff;
}

.article-cta p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 2rem;
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, #60a5fa 0%, #a855f7 100%);
    color: #ffffff;
    padding: 1.2rem 2.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.3);
}

/* Responsive */
@media (max-width: 1024px) {
    .article-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .article-hero {
        padding: 3rem 1rem 2rem;
    }

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

    .article-container {
        padding: 0 1rem;
        margin: 2rem auto;
    }

    .article-meta {
        gap: 1rem;
    }

    .featured-image {
        height: 250px;
    }
}
/* Animated circuit lines */
.circuit-lines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.circuit-line {
    position: absolute;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.4), rgba(147, 51, 234, 0.4), transparent);
    height: 1px;
    animation: circuitFlow 8s linear infinite;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.circuit-line.vertical {
    width: 1px;
    height: 100px;
    background: linear-gradient(180deg, transparent, rgba(59, 130, 246, 0.4), rgba(147, 51, 234, 0.4), transparent);
    animation: circuitFlowVertical 10s linear infinite;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

@keyframes circuitFlow {
    0% { left: -200px; width: 0; }
    50% { width: 200px; }
    100% { left: 100%; width: 0; }
}

@keyframes circuitFlowVertical {
    0% { top: -100px; height: 0; }
    50% { height: 100px; }
    100% { top: 100%; height: 0; }
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    width: 100%;
    padding: 1.5rem 2rem;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(40px);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    background-color: #ffffff;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    transition: all 0.3s ease;
    letter-spacing: -0.02em;
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, #60a5fa, #a855f7);
    transition: width 0.3s ease;
}

.logo:hover::after {
    width: 100%;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.95rem;
    position: relative;
    padding: 0.8rem 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.01em;
}

.nav-links a:hover {
    color: #ffffff;
}

.nav-links a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: #ffffff;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a:hover::before {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* Navbar Responsive */
@media (max-width: 768px) {
    .navbar {
        padding: 1rem 1.5rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(40px);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }
}

/* Footer Styles */
.footer {
    background: linear-gradient(135deg, rgba(5, 5, 15, 0.95) 0%, rgba(10, 10, 25, 0.98) 100%);
    border-top: 1px solid rgba(96, 165, 250, 0.1);
    position: relative;
    overflow: hidden;
    margin-top: 6rem;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(96, 165, 250, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(168, 85, 247, 0.05) 0%, transparent 50%);
    z-index: -1;
}

.footer-grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
    opacity: 0.3;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 6rem 2rem 2rem;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand {
    grid-column: span 1;
}

.footer-logo {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, #60a5fa 50%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.footer-description {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    font-weight: 300;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1), rgba(168, 85, 247, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.social-link:hover::before {
    opacity: 1;
}

.social-link:hover {
    color: #ffffff;
    border-color: rgba(96, 165, 250, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(96, 165, 250, 0.2);
}

.social-link svg {
    width: 20px;
    height: 20px;
    z-index: 1;
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 2rem;
    letter-spacing: -0.01em;
    position: relative;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 1px;
    background: linear-gradient(90deg, #60a5fa, #a855f7);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 400;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.footer-links a::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 1px;
    background: #60a5fa;
    transition: width 0.3s ease;
}

.footer-links a:hover {
    color: #ffffff;
    padding-left: 8px;
}

.footer-links a:hover::before {
    width: 20px;
}

.footer-newsletter {
    grid-column: span 1;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.newsletter-input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    color: #ffffff;
    font-size: 0.9rem;
    font-family: inherit;
    backdrop-filter: blur(20px);
    transition: all 0.3s ease;
}

.newsletter-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.newsletter-input:focus {
    outline: none;
    border-color: rgba(96, 165, 250, 0.5);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 20px rgba(96, 165, 250, 0.1);
}

.newsletter-btn {
    background: linear-gradient(135deg, #60a5fa 0%, #a855f7 100%);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    padding: 1rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(96, 165, 250, 0.2);
}

.newsletter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(96, 165, 250, 0.3);
    background: linear-gradient(135deg, #3b82f6 0%, #9333ea 100%);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
    font-weight: 400;
}

.footer-legal {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    transition: color 0.3s ease;
}

.footer-legal a:hover {
    color: #60a5fa;
}

.footer-glow {
    position: absolute;
    top: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(96, 165, 250, 0.4) 25%, 
        rgba(168, 85, 247, 0.4) 50%, 
        rgba(236, 72, 153, 0.4) 75%, 
        transparent 100%);
    animation: footerGlow 4s ease-in-out infinite;
}

@keyframes footerGlow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.8; }
}

/* Floating particles */
.footer-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.6), transparent 70%);
    border-radius: 50%;
    animation: floatUp 8s infinite ease-in-out;
}

.particle:nth-child(1) {
    left: 20%;
    animation-delay: 0s;
}

.particle:nth-child(2) {
    left: 50%;
    animation-delay: 2s;
}

.particle:nth-child(3) {
    left: 80%;
    animation-delay: 4s;
}

@keyframes floatUp {
    0% {
        transform: translateY(100px) scale(0);
        opacity: 0;
    }
    50% {
        transform: translateY(-50px) scale(1);
        opacity: 1;
    }
    100% {
        transform: translateY(-200px) scale(0);
        opacity: 0;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }

    .footer-brand {
        grid-column: span 2;
    }

    .footer-newsletter {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .footer-container {
        padding: 4rem 1.5rem 2rem;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .footer-brand,
    .footer-newsletter {
        grid-column: span 1;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }

    .footer-legal {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .footer-social {
        justify-content: center;
    }

    .footer-legal {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Demo styles to show the footer */
.demo-content {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #000000 0%, #0f0f23 100%);
}

.demo-text {
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.2rem;
}