/* Variables globales */
:root {
    --primary-color: #4a90e2;
    --secondary-color: #f39c12;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --border-color: #ddd;
    --error-color: #e74c3c;
    --success-color: #2ecc71;
    --font-family: 'Inter', sans-serif;
    --container-width: 1200px;
    --spacing-unit: 1rem;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--light-gray);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

/* Navbar */
.navbar {
    background-color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 700;
    font-size: 1.5rem;
}

.logo-icon {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: #357abd;
}

/* Header de categoría */
.category-header {
    background-color: white;
    padding: 3rem 0;
    text-align: center;
    margin-bottom: 2rem;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.category-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.category-header p {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* Filtros */
.filters {
    background-color: white;
    padding: 1rem 0;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.filters-content {
    display: flex;
    justify-content: flex-end;
    gap: 2rem;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-label {
    font-weight: 500;
}

.filter-select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-family);
}

/* Grid de dibujos */
.drawings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.drawing-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.drawing-card:hover {
    transform: translateY(-5px);
}

.drawing-link {
    text-decoration: none;
    color: var(--text-color);
}

.drawing-image {
    position: relative;
    padding-top: 75%;
    overflow: hidden;
}

.drawing-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.drawing-info {
    padding: 1rem;
}

.drawing-info h3 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.drawing-info p {
    color: #666;
    font-size: 0.9rem;
}

/* Paginación */
.pagination {
    display: flex;
    justify-content: center;
    margin-bottom: 3rem;
}

.pagination-buttons {
    display: flex;
    gap: 0.5rem;
}

.pagination-button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background-color: white;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

.pagination-button:hover {
    background-color: var(--light-gray);
}

.pagination-button.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination-ellipsis {
    padding: 0.5rem;
}

/* Mensaje de error */
.error-message {
    background-color: #fde8e8;
    border: 1px solid var(--error-color);
    color: var(--error-color);
    padding: 1rem;
    border-radius: 4px;
    text-align: center;
    margin: 2rem 0;
}

/* Footer */
.footer {
    background-color: white;
    padding: 3rem 0;
    margin-top: 3rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: #666;
    text-decoration: none;
    font-size: 1.2rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--primary-color);
}

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

    .nav-links {
        flex-direction: column;
        gap: 1rem;
    }

    .filters-content {
        flex-direction: column;
        gap: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}