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

:root {
    --primary-color: #1a365d;
    --secondary-color: #2c5282;
    --accent-color: #ed8936;
    --text-color: #2d3748;
    --text-light: #718096;
    --bg-color: #f7fafc;
    --white: #ffffff;
    --border-color: #e2e8f0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-color);
}

a {
    text-decoration: none;
    color: inherit;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent-color);
}

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

nav a {
    color: var(--white);
    font-weight: 500;
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--accent-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 4rem 2rem;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Blog Posts Grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

/* Post Card */
.post-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.post-card-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.post-card-content {
    padding: 1.5rem;
}

.post-card-date {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.post-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
    line-height: 1.4;
}

.post-card-excerpt {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.read-more {
    display: inline-flex;
    align-items: center;
    color: var(--accent-color);
    font-weight: 600;
    transition: gap 0.3s ease;
    gap: 0.5rem;
}

.read-more:hover {
    gap: 0.75rem;
}

/* Single Post Page */
.post-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.post-header {
    margin-bottom: 2rem;
}

.post-header h1 {
    font-size: 2.25rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.post-meta {
    color: var(--text-light);
    font-size: 0.9rem;
}

.post-featured-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 2rem;
}

.post-content {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

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

.post-content h2 {
    color: var(--primary-color);
    margin: 2rem 0 1rem;
    font-size: 1.5rem;
}

.post-content h3 {
    color: var(--secondary-color);
    margin: 1.5rem 0 0.75rem;
    font-size: 1.25rem;
}

.post-content ul, .post-content ol {
    margin: 1rem 0 1.5rem 1.5rem;
}

.post-content li {
    margin-bottom: 0.5rem;
}

.post-content blockquote {
    border-left: 4px solid var(--accent-color);
    padding-left: 1.5rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: var(--text-light);
}

.call-to-action {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    margin-top: 2rem;
    text-align: center;
}

.call-to-action h3 {
    color: var(--white);
    margin-bottom: 1rem;
}

.call-to-action p {
    margin-bottom: 0;
    opacity: 0.95;
}

/* Back Link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--secondary-color);
    font-weight: 500;
    margin-bottom: 2rem;
    transition: gap 0.3s ease;
}

.back-link:hover {
    gap: 0.75rem;
}

/* Footer */
footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 3rem 2rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-container p {
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.footer-tagline {
    font-size: 0.9rem;
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        gap: 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .post-header h1 {
        font-size: 1.75rem;
    }

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