:root {
    --primary: #FF6B35;
    --secondary: #004E89;
    --accent: #F7931E;
    --light-bg: #F5F5F5;
    --dark-text: #2C3E50;
    --light-text: #666;
    --border-color: #E0E0E0;
    --success: #27AE60;
    --radius: 12px;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

body {
    font-family: Arial, sans-serif;
    background-color: var(--light-bg);
    color: var(--dark-text);
    margin: 0;
    padding: 0;
}

nav {
    background-color: var(--secondary);
    color: white;
    padding: 10px 20px;
}

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

nav .logo img {
    height: 40px;
    margin-right: 10px;
}

nav .nav-menu {
    list-style: none;
    display: flex;
    gap: 15px;
    margin: 0;
    padding: 0;
}

nav .nav-menu li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

nav .nav-menu li a.nav-link-active {
    border-bottom: 2px solid var(--primary);
    padding-bottom: 2px;
}

.intro-text {
    text-align: center;
    max-width: 800px;
    margin: 40px auto 20px auto;
}

.intro-text h1 {
    color: var(--secondary);
    font-size: 2em;
    margin-bottom: 10px;
}

.intro-text p {
    color: var(--dark-text);
    font-size: 1.2em;
}

.posts-container {
    max-width: 1200px;
    margin: 20px auto 50px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 992px) {
    .posts-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .posts-container {
        grid-template-columns: 1fr;
    }
}

.post-card {
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.post-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.post-card .post-content {
    padding: 15px;
    flex-grow: 1;
}

.post-card h2 {
    color: var(--primary);
    margin: 0 0 10px 0;
    font-size: 1.3em;
}

.post-card p {
    color: var(--dark-text);
    font-size: 1em;
    margin-bottom: 15px;
}

.btn-leer {
    padding: 10px 20px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 1em;
    text-decoration: none;
    transition: background-color 0.2s, transform 0.2s;
}

.btn-leer:hover {
    background-color: var(--accent);
    transform: translateY(-3px);
}