/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

/* Variables */
:root {
    --primary-blue: #2563eb;
    --secondary-blue: #3b82f6;
    --primary-green: #10b981;
    --secondary-green: #34d399;
    --primary-yellow: #fbbf24;
    --secondary-yellow: #fcd34d;
    --light-bg: #f8fafc;
    --dark-text: #1e293b;
    --medium-text: #475569;
    --light-text: #94a3b8;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background-color: var(--light-bg);
    overflow-x: hidden;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

nav.scrolled {
    padding: 1rem 5%;
    box-shadow: var(--shadow-md);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-blue);
    background: linear-gradient(45deg, var(--primary-blue), var(--primary-green));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    color: var(--dark-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
}

.nav-links a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-green));
    transition: var(--transition);
}

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

.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 3px;
    background-color: var(--dark-text);
    margin: 5px;
    transition: var(--transition);
}

/* Blog Header */
.blog-header {
    height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
    position: relative;
    overflow: hidden;
}

.blog-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 20"><path d="M0,20 Q25,0 50,10 T100,5 L100,20 Z" fill="rgba(255,255,255,0.1)"/></svg>') repeat-x;
    background-size: 200px 100%;
    animation: wave 10s linear infinite;
}

@keyframes wave {
    0% { background-position-x: 0; }
    100% { background-position-x: 200px; }
}

.blog-hero-content {
    text-align: center;
    z-index: 1;
    color: white;
    max-width: 600px;
    padding: 2rem;
}

.blog-hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.blog-hero-content p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Blog Filters */
.blog-filters {
    padding: 2rem 5%;
    background-color: var(--white);
    border-bottom: 1px solid #e2e8f0;
}

.filter-container {
    max-width: 1200px;
    margin: 0 auto;
}

.filter-container h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-text);
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    border: 2px solid var(--light-text);
    background-color: transparent;
    color: var(--medium-text);
    border-radius: 2rem;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    background-color: rgba(37, 99, 235, 0.1);
}

/* Blog Posts */
.blog-posts {
    padding: 3rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.posts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.blog-post {
    background-color: var(--white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    opacity: 1;
    transform: scale(1);
}

.blog-post:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.blog-post.hidden {
    opacity: 0;
    transform: scale(0.8);
    pointer-events: none;
}

/* Featured Post */
.blog-post.featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-height: none;
}

.blog-post.featured .post-content h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.blog-post.featured .post-excerpt {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.post-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.blog-post.featured .post-image {
    height: auto;
    min-height: 300px;
}

.post-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    display: flex; /* center content with flexbox */
    align-items: center;
    justify-content: center;
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* contain if you want no cropping */
}

.image-icon {
    font-size: 4rem;
    opacity: 0.8;
}

.post-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--primary-blue);
    padding: 0.3rem 0.8rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    backdrop-filter: blur(5px);
}

.post-content {
    padding: 1.5rem;
}

.post-content h3,
.post-content h2 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--dark-text);
    font-weight: 600;
    line-height: 1.3;
}

.post-excerpt {
    color: var(--medium-text);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--light-text);
    margin-bottom: 1rem;
}

.read-more {
    display: inline-block;
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    position: relative;
}

.read-more:after {
    content: '→';
    margin-left: 0.5rem;
    transition: var(--transition);
}

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

/* Load More Button */
.load-more-container {
    text-align: center;
    margin-top: 3rem;
}

.load-more-btn {
    padding: 0.75rem 2rem;
    background: linear-gradient(45deg, var(--primary-blue), var(--primary-green));
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.load-more-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Newsletter */
.newsletter {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    padding: 3rem 5%;
    color: white;
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.newsletter h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.newsletter p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    max-width: 400px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 0.8rem 1rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    outline: none;
}

.newsletter-form button {
    padding: 0.8rem 1.5rem;
    background-color: var(--primary-yellow);
    color: var(--dark-text);
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.newsletter-form button:hover {
    background-color: var(--secondary-yellow);
    transform: translateY(-2px);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--dark-text);
    color: var(--white);
}

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

.blog-post {
    animation: fadeInUp 0.6s ease-out;
}

/* Media Queries */
@media screen and (max-width: 768px) {
    .nav-links {
        position: absolute;
        right: 0;
        top: 70px;
        background-color: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 100%;
        transform: translateX(100%);
        transition: transform 0.5s ease-in;
        padding: 2rem 0;
        box-shadow: var(--shadow-md);
    }
    
    .nav-links li {
        margin: 1rem 0;
    }
    
    .nav-active {
        transform: translateX(0%);
    }
    
    .burger {
        display: block;
    }
    
    .toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .toggle .line2 {
        opacity: 0;
    }
    
    .toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .blog-hero-content h1 {
        font-size: 2.5rem;
    }

    .blog-hero-content p {
        font-size: 1rem;
    }

    .posts-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .blog-post.featured {
        grid-template-columns: 1fr;
    }

    .blog-post.featured .post-content h2 {
        font-size: 1.5rem;
    }

    .filter-buttons {
        justify-content: center;
    }

    .newsletter-form {
        flex-direction: column;
    }
}

@media screen and (max-width: 480px) {
    .blog-header {
        height: 50vh;
    }

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

    .filter-container {
        text-align: center;
    }

    .filter-btn {
        font-size: 0.8rem;
        padding: 0.4rem 1rem;
    }

    .blog-posts {
        padding: 2rem 3%;
    }

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

    .post-content {
        padding: 1rem;
    }
}