:root {
    --primary: #0e75b6;
    --dark: #121212;
    --darker: #0a0a0a;
    --light: #f4f4f4;
    --gray: #2d2d2d;
    --card-bg: #1e1e1e;
    --text-gray: #aaa;
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, var(--darker), var(--dark));
    color: var(--light);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: #5bc0eb;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background-color: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1.2rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    color: var(--primary);
}

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

.nav-links a {
    color: var(--light);
    font-weight: 500;
    position: relative;
    padding: 8px 0;
}

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

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

.back-btn {
    background: var(--card-bg);
    color: var(--light);
    padding: 10px 20px;
    border-radius: 30px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.back-btn:hover {
    background: var(--primary);
    transform: translateX(-5px);
}

/* Main Content */
main {
    flex: 1;
    padding: 3rem 0;
}

.blog-container {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin: 2rem auto;
    max-width: 900px;
}

.blog-header {
    padding: 3rem 3rem 2rem;
    position: relative;
    background: linear-gradient(rgba(14, 117, 182, 0.15), rgba(0, 0, 0, 0.7)),
                url('https://images.unsplash.com/photo-1555066931-4365d14bab8c?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
    background-size: cover;
    background-position: center;
    color: white;
}

.blog-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--primary);
}

.post-title {
    font-size: 2.8rem;
    margin-bottom: 1rem;
    line-height: 1.2;
    font-weight: 800;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    color: var(--text-gray);
}

.post-meta div {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.tag {
    background: rgba(14, 117, 182, 0.2);
    color: var(--primary);
    padding: 5px 15px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 500;
}

.blog-content {
    padding: 3rem;
    font-size: 1.1rem;
}

.blog-content p {
    margin-bottom: 1.5rem;
}

.blog-content h3 {
    font-size: 1.8rem;
    margin: 2.5rem 0 1.5rem;
    color: var(--primary);
    font-weight: 700;
    position: relative;
    padding-left: 20px;
}

.blog-content h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    height: 25px;
    width: 5px;
    background: var(--primary);
    border-radius: 3px;
}

.blog-content blockquote {
    border-left: 4px solid var(--primary);
    padding: 1rem 1.5rem;
    margin: 2rem 0;
    background: rgba(14, 117, 182, 0.1);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-style: italic;
}

.code-block {
    background: #1a1a1a;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin: 2rem 0;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.image-container {
    margin: 2.5rem 0;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    position: relative;
}

.image-container img {
    width: 100%;
    display: block;
}

.image-caption {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-gray);
    padding: 10px;
    background: rgba(0, 0, 0, 0.3);
}

.author-card {
    display: flex;
    gap: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin: 3rem 0;
    align-items: center;
    border-left: 3px solid var(--primary);
}

.author-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    flex-shrink: 0;
}

.author-info h4 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.author-info p {
    color: var(--text-gray);
    font-size: 0.95rem;
    margin-bottom: 10px;
}

/* Navigation */
.post-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
}

.nav-btn {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 48%;
}

.nav-btn:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
}

.nav-btn i {
    font-size: 1.5rem;
    color: var(--primary);
}

.nav-btn.prev {
    text-align: left;
}

.nav-btn.next {
    text-align: right;
    flex-direction: row-reverse;
}

.nav-btn .label {
    font-size: 0.9rem;
    color: var(--text-gray);
}

.copyright {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
}

/* Responsive Design */
@media (max-width: 900px) {
    .post-title {
        font-size: 2.3rem;
    }

    .blog-header,
    .blog-content {
        padding: 2rem;
    }

    .author-card {
        flex-direction: column;
        text-align: center;
    }
}

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

    .post-title {
        font-size: 2rem;
    }

    .post-navigation {
        flex-direction: column;
        gap: 15px;
    }

    .nav-btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .blog-header {
        padding: 1.5rem;
    }

    .post-title {
        font-size: 1.8rem;
    }

    .post-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.8rem;
    }

    .blog-content {
        padding: 1.5rem;
    }
}