/* === RESET & BASE === */
* { box-sizing: border-box; margin:0; padding:0; }
body { font-family: 'Segoe UI', Roboto, Arial, sans-serif; background:#f4f6f9; color:#333; }
a { text-decoration: underline;
    color: gray;}

/* === NAVBAR === */
header {
    background: #1f1f1f; /* dark menu */
    color: #fff;
    padding: 15px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,.5);
}
header .logo {
    font-weight: bold;
    font-size: 22px;
    letter-spacing: 1px;
    color: #fff;
}
nav {
    flex: 1;
    margin-left: 40px;
}
nav ul {
    list-style: none;
    display: flex;
    gap: 15px;
    flex-wrap: wrap; /* evita scroll lateral */
    justify-content: flex-end;
}
nav a {
    color: #fff;
    padding: 8px 14px;
    border-radius: 6px;
    transition: background .2s;
}
nav a:hover {
    background: rgba(255,255,255,0.1);
}
.menu-toggle {
    display: none;
    font-size: 26px;
    cursor: pointer;
    color: #fff;
}

/* Responsive navbar */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        position: absolute;
        top: 65px;
        right: 0;
        background: #1f1f1f;
        width: 220px;
        display: none;
        padding: 15px 0;
        border-radius: 0 0 8px 8px;
        box-shadow: 0 4px 10px rgba(0,0,0,.5);
        animation: fadeIn .3s ease;
    }
    nav ul.show { display: block; }
    .menu-toggle { display: block; }
}
@keyframes fadeIn {
    from { opacity:0; transform:translateY(-10px); }
    to { opacity:1; transform:translateY(0); }
}

/* === GRID CARDS (contenido) === */
main.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px,1fr));
    gap: 25px;
    padding: 25px;
    max-width: 1200px;
    margin: auto;
}
.card {
    background: #fff; /* contenido blanco */
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,.1);
    transition: transform .2s, box-shadow .2s;
    display: flex;
    flex-direction: column;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 6px 20px rgba(0,0,0,.15);
}
.card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}
.card-body {
    padding: 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.card h2 {
    font-size: 19px;
    margin-bottom: 10px;
    color: black;
}
.card p {
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 12px;
    color:#333;
}
.card small {
    color: #777;
    display: block;
    margin-bottom: 8px;
}
.card a.read-more {
    margin-top: auto;
    display: inline-block;
    background: black;
    color: #fff;
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 14px;
    text-align: center;
    transition: background .2s;
}
.card a.read-more:hover {
    background: #0b5ed7;
}
/* === BREADCRUMB === */
.breadcrumb {
    background: #e9ecef;
    padding: 12px 25px;
    font-size: 14px;
    border-bottom: 1px solid #dee2e6;
}
.breadcrumb a {
    color: #6c757d;
    text-decoration: none;
}
.breadcrumb a:hover {
    text-decoration: underline;
    color: black;
}
.breadcrumb span {
    margin: 0 8px;
    color: #6c757d;
}
/* === PAGINATION === */
.pagination {
    text-align: center;
    margin: 30px auto;
}
.pagination a, .pagination strong {
    margin: 0 4px;
    padding: 8px 14px;
    border: 1px solid black;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
}
.pagination a {
    color: black;
    background: #fff;
    transition: all .2s;
}
.pagination a:hover {
    background: black;
    color: #fff;
}
.pagination strong {
    background: black;
    color: #fff;
}

/* === PAGE HEADER === */
.page-header {
    background: linear-gradient(135deg, #0d6efd 0%, #0b5ed7 100%);
    color: white;
    padding: 40px 25px;
    text-align: center;
}
.page-header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 300;
}
.page-header p {
    font-size: 1.1em;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}
/* === ARTICLE === */
article {
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    background: #fff; /* contenido blanco */
    border-radius: 8px;
    box-shadow:0 2px 5px rgba(0,0,0,.1);
}
article h1 { color: black; margin-bottom:10px; }
article img { max-width:100%; border-radius:8px; margin:15px 0; }
article p, article small { color:#333; }