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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f9f9f9;
    color: #333;
    line-height: 1.6;
}

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    font-size: 28px;
    font-weight: 700;
    margin: 0;
}

header nav {
    display: flex;
    gap: 30px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
}

header nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

header nav a:hover {
    opacity: 0.8;
}

header .btn-nav {
    background: white;
    color: #667eea;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 600;
}

header .btn-nav:hover {
    background: rgba(255, 255, 255, 0.9);
}

/* Main */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: #333;
    text-align: center;
}

/* Menu Items Section */
#menu-items {
    margin-bottom: 40px;
}

#items-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

/* Footer */
footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

footer p {
    font-size: 14px;
}

/* Responsivo */
@media (max-width: 768px) {
    header h1 {
        font-size: 24px;
    }

    header nav {
        flex-direction: column;
        gap: 10px;
    }

    header nav a {
        display: block;
        padding: 12px 20px;
    }

    main {
        padding: 20px 10px;
    }

    main h2 {
        font-size: 22px;
        margin-bottom: 20px;
    }

    #items-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}